id stringlengths 40 40 | instruction stringlengths 68 308 | input stringlengths 17 33.4k | output stringlengths 100 30k |
|---|---|---|---|
8ef7f3132e4005a103b382e71abea7ad01fbeb86 | Analyze and fix the following issue in the Linux kernel code: LoongArch: Add cpuhotplug hooks to fix high cpu usage of vCPU threads | Problem Details:
When the CPU is offline, the timer of LoongArch is not correctly closed.
This is harmless for real machines, but resulting in an excessively high
cpu usage rate of the offline vCPU thread in the virtual machines.
To correctly close the timer, we have made the following modifications:
Register the cpu... | ```diff
diff --git a/arch/loongarch/kernel/time.c b/arch/loongarch/kernel/time.c
index 367906b10f81..f3092f2de8b5 100644
--- a/arch/loongarch/kernel/time.c
+++ b/arch/loongarch/kernel/time.c
@@ -5,6 +5,7 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/clockchips.h>
+#include... |
5dfea6644d201bfeffaa7e0d79d62309856613b7 | Analyze and fix the following issue in the Linux kernel code: LoongArch: Pass annotate-tablejump option if LTO is enabled | Problem Details:
When compiling with LLVM and CONFIG_LTO_CLANG is set, there exist many
objtool warnings "sibling call from callable instruction with modified
stack frame".
For this special case, the related object file shows that there is no
generated relocation section '.rela.discard.tablejump_annotate' for the
tabl... | ```diff
diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index b0703a4e02a2..a3a9759414f4 100644
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -102,7 +102,13 @@ KBUILD_CFLAGS += $(call cc-option,-mthin-add-sub) $(call cc-option,-Wa$(comma)
ifdef CONFIG_OBJTOOL
ifdef CONFIG_CC_HAS_AN... |
a47bc954cf0eb51f2828e1607d169d487df7f11f | Analyze and fix the following issue in the Linux kernel code: objtool/LoongArch: Get table size correctly if LTO is enabled | Problem Details:
When compiling with LLVM and CONFIG_LTO_CLANG is set, there exist many
objtool warnings "sibling call from callable instruction with modified
stack frame".
For this special case, the related object file shows that there is no
generated relocation section '.rela.discard.tablejump_annotate' for the
tabl... | ```diff
diff --git a/tools/objtool/arch/loongarch/special.c b/tools/objtool/arch/loongarch/special.c
index e39f86d97002..a80b75f7b061 100644
--- a/tools/objtool/arch/loongarch/special.c
+++ b/tools/objtool/arch/loongarch/special.c
@@ -27,6 +27,7 @@ static void get_rodata_table_size_by_table_annotate(struct objtool_file... |
96bcb34df55f7fee99795127c796315950c94fed | Analyze and fix the following issue in the Linux kernel code: ASoC: test-component: Use kcalloc() instead of kzalloc() | Problem Details:
Use devm_kcalloc() in test_driver_probe() to gain built-in overflow
protection, making memory allocation safer when calculating allocation
size compared to explicit multiplication.
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://patch.msgid.link/20250820123423.470486-4-rongqianfeng@... | ```diff
diff --git a/sound/soc/generic/test-component.c b/sound/soc/generic/test-component.c
index 89b995987e2d..2e49066dedd4 100644
--- a/sound/soc/generic/test-component.c
+++ b/sound/soc/generic/test-component.c
@@ -547,8 +547,8 @@ static int test_driver_probe(struct platform_device *pdev)
priv = devm_kzalloc(de... |
3b6f4bd6cda2797b0d999a129376c112d41604f4 | Analyze and fix the following issue in the Linux kernel code: ASoC: fsl: Use kcalloc() instead of kzalloc() | Problem Details:
Use devm_kcalloc() in fsl_sai_read_dlcfg() and imx_audmux_probe() to gain
built-in overflow protection, making memory allocation safer when
calculating allocation size compared to explicit multiplication.
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://patch.msgid.link/2025082012342... | ```diff
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index cac064a60349..757e7868e322 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1345,7 +1345,7 @@ static int fsl_sai_read_dlcfg(struct fsl_sai *sai)
num_cfg = elems / 3;
/* Add one more for default value */
- cfg = dev... |
45441b933cdfb7a018674049f269d7a1bc1688df | Analyze and fix the following issue in the Linux kernel code: ASoC: codecs: Use kcalloc() instead of kzalloc() | Problem Details:
Use devm_kcalloc() in fs_parse_scene_tables() and pcmdev_gain_ctrl_add()
to gain built-in overflow protection, making memory allocation safer when
calculating allocation size compared to explicit multiplication.
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://patch.msgid.link/202508... | ```diff
diff --git a/sound/soc/codecs/fs-amp-lib.c b/sound/soc/codecs/fs-amp-lib.c
index 75d8d5082e30..c8f56617e370 100644
--- a/sound/soc/codecs/fs-amp-lib.c
+++ b/sound/soc/codecs/fs-amp-lib.c
@@ -111,7 +111,7 @@ static int fs_parse_scene_tables(struct fs_amp_lib *amp_lib)
if (count <= 0)
return -EFAULT;
- sce... |
8151320c747efb22d30b035af989fed0d502176e | Analyze and fix the following issue in the Linux kernel code: ACPI: pfr_update: Fix the driver update version check | Problem Details:
The security-version-number check should be used rather
than the runtime version check for driver updates.
Otherwise, the firmware update would fail when the update binary had
a lower runtime version number than the current one.
Fixes: 0db89fa243e5 ("ACPI: Introduce Platform Firmware Runtime Update d... | ```diff
diff --git a/drivers/acpi/pfr_update.c b/drivers/acpi/pfr_update.c
index 318683744ed1..11b1c2828005 100644
--- a/drivers/acpi/pfr_update.c
+++ b/drivers/acpi/pfr_update.c
@@ -329,7 +329,7 @@ static bool applicable_image(const void *data, struct pfru_update_cap_info *cap,
if (type == PFRU_CODE_INJECT_TYPE)
... |
edede7a6dcd7435395cf757d053974aaab6ab1c2 | Analyze and fix the following issue in the Linux kernel code: trace/fgraph: Fix the warning caused by missing unregister notifier | Problem Details:
This warning was triggered during testing on v6.16:
notifier callback ftrace_suspend_notifier_call already registered
WARNING: CPU: 2 PID: 86 at kernel/notifier.c:23 notifier_chain_register+0x44/0xb0
...
Call Trace:
<TASK>
blocking_notifier_chain_register+0x34/0x60
register_ftrace_graph+0x330/0x410... | ```diff
diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c
index f4d200f0c610..2a42c1036ea8 100644
--- a/kernel/trace/fgraph.c
+++ b/kernel/trace/fgraph.c
@@ -1397,6 +1397,7 @@ error:
ftrace_graph_active--;
gops->saved_func = NULL;
fgraph_lru_release_index(i);
+ unregister_pm_notifier(&ftrace_suspend_... |
6a909ea83f226803ea0e718f6e88613df9234d58 | Analyze and fix the following issue in the Linux kernel code: tracing: Limit access to parser->buffer when trace_get_user failed | Problem Details:
When the length of the string written to set_ftrace_filter exceeds
FTRACE_BUFF_MAX, the following KASAN alarm will be triggered:
BUG: KASAN: slab-out-of-bounds in strsep+0x18c/0x1b0
Read of size 1 at addr ffff0000d00bd5ba by task ash/165
CPU: 1 UID: 0 PID: 165 Comm: ash Not tainted 6.16.0-g6bcdbd62bd... | ```diff
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4283ed4e8f59..8d8935ed416d 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1816,7 +1816,7 @@ int trace_get_user(struct trace_parser *parser, const char __user *ubuf,
ret = get_user(ch, ubuf++);
if (ret)
- return ret;
+ goto ... |
2693227c1150d58bf82ef45a394a554373be5286 | Analyze and fix the following issue in the Linux kernel code: libbpf: Export bpf_object__prepare symbol | Problem Details:
Add missing LIBBPF_API macro for bpf_object__prepare function to enable
its export. libbpf.map had bpf_object__prepare already listed.
Fixes: 1315c28ed809 ("libbpf: Split bpf object load into prepare/load")
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Daniel Borkmann <daniel@iogea... | ```diff
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 455a957cb702..2b86e21190d3 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -252,7 +252,7 @@ bpf_object__open_mem(const void *obj_buf, size_t obj_buf_sz,
* @return 0, on success; negative error code, otherwise, error code is... |
2f44bb65f28f5f058fe4ab9bc81e5fde5575c473 | Analyze and fix the following issue in the Linux kernel code: drm/panel: panel-samsung-s6e88a0-ams427ap24: Fix includes | Problem Details:
Include <linux/property.h> to declare device_property_read_bool() and
<linux/mod_devicetable.h> to declare struct of_device_id. Avoids the
dependency on the backlight header to include both.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
... | ```diff
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c
index e91f50662997..7e2f4e043d62 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e88a0-ams427ap24.c
@@ -7,7 +7,9 @@
... |
38580d1e7f18230b10e8ba6d9a44a9fcc532f47f | Analyze and fix the following issue in the Linux kernel code: drm/virtio: clean up minor codestyle issues | Problem Details:
Fix codestyle warnings and errors generated by CHECKPATCH in virtio
source files.
Signed-off-by: Athul Raj Kollareth <krathul3152@gmail.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://lore.kernel.org/r/20250813062109.5326-1-krathul3152@gmail.com | ```diff
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index e5805ca646c7..c3315935d8bc 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -131,9 +131,8 @@ static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crt... |
2729a60bbfb9215997f25372ebe9b7964f038296 | Analyze and fix the following issue in the Linux kernel code: block: don't silently ignore metadata for sync read/write | Problem Details:
The block fops don't try to handle metadata for synchronous requests,
probably because the completion handler looks at dio->iocb which is not
valid for synchronous requests.
But silently ignoring metadata (or warning in case of
__blkdev_direct_IO_simple) is a really bad idea as that can cause
silent d... | ```diff
diff --git a/block/fops.c b/block/fops.c
index 08e7c21bd9f1..ddbc69c0922b 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -55,7 +55,6 @@ static ssize_t __blkdev_direct_IO_simple(struct kiocb *iocb,
struct bio bio;
ssize_t ret;
- WARN_ON_ONCE(iocb->ki_flags & IOCB_HAS_METADATA);
if (nr_pages <= DIO_INLIN... |
d072148a8631f102de60ed5a3a827e85d09d24f0 | Analyze and fix the following issue in the Linux kernel code: fs: add a FMODE_ flag to indicate IOCB_HAS_METADATA availability | Problem Details:
Currently the kernel will happily route io_uring requests with metadata
to file operations that don't support it. Add a FMODE_ flag to guard
that.
Fixes: 4de2ce04c862 ("fs: introduce IOCB_HAS_METADATA for metadata")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/202508190... | ```diff
diff --git a/block/fops.c b/block/fops.c
index 82451ac8ff25..08e7c21bd9f1 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -7,6 +7,7 @@
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/blkdev.h>
+#include <linux/blk-integrity.h>
#include <linux/buffer_head.h>
#include <linux/mpage.h>
#include ... |
8763d2257f5231cfdfd8a53594647927dbf8bb06 | Analyze and fix the following issue in the Linux kernel code: powerpc/boot/install.sh: Fix shellcheck warnings | Problem Details:
Fix shellcheck warning such as
"Double quote to prevent globbing and word splitting." and
Use $(...) notation instead of legacy backticks `...`.
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/202505180441... | ```diff
diff --git a/arch/powerpc/boot/install.sh b/arch/powerpc/boot/install.sh
index 101fcb397a0f..c3df6c27ce75 100755
--- a/arch/powerpc/boot/install.sh
+++ b/arch/powerpc/boot/install.sh
@@ -19,19 +19,19 @@
set -e
# this should work for both the pSeries zImage and the iSeries vmlinux.sm
-image_name=`basename $2... |
d40ae9033418095642f65f4fd54dc5a7d292ee39 | Analyze and fix the following issue in the Linux kernel code: powerpc/prom_init: Fix shellcheck warnings | Problem Details:
Fix "Double quote to prevent globbing and word splitting."
warning from shellcheck
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Reviewed-by: Stephen Rothwell <sfr@cab.auug.org.au>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250518044107.39928-3... | ```diff
diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh
index 69623b9045d5..3090b97258ae 100644
--- a/arch/powerpc/kernel/prom_init_check.sh
+++ b/arch/powerpc/kernel/prom_init_check.sh
@@ -15,8 +15,8 @@
has_renamed_memintrinsics()
{
- grep -q "^CONFIG_KASAN=y$" ${KCONFI... |
88688a2c8ac6c8036d983ad8b34ce191c46a10aa | Analyze and fix the following issue in the Linux kernel code: powerpc/kvm: Fix ifdef to remove build warning | Problem Details:
When compiling for pseries or powernv defconfig with "make C=1",
these warning were reported bu sparse tool in powerpc/kernel/kvm.c
arch/powerpc/kernel/kvm.c:635:9: warning: switch with no cases
arch/powerpc/kernel/kvm.c:646:9: warning: switch with no cases
Currently #ifdef were added after the switc... | ```diff
diff --git a/arch/powerpc/kernel/kvm.c b/arch/powerpc/kernel/kvm.c
index 5b3c093611ba..7209d00a9c25 100644
--- a/arch/powerpc/kernel/kvm.c
+++ b/arch/powerpc/kernel/kvm.c
@@ -632,19 +632,19 @@ static void __init kvm_check_ins(u32 *inst, u32 features)
#endif
}
- switch (inst_no_rt & ~KVM_MASK_RB) {
#ifdef ... |
6a859f1a19d1f8756ffb097f5973dfebbca4811a | Analyze and fix the following issue in the Linux kernel code: powerpc: unify two CONFIG_POWERPC64_CPU entries in the same choice block | Problem Details:
There are two CONFIG_POWERPC64_CPU entries in the "CPU selection"
choice block.
I guess the intent is to display a different prompt depending on
CPU_LITTLE_ENDIAN: "Generic (POWER5 and PowerPC 970 and above)" for big
endian, and "Generic (POWER8 and above)" for little endian.
I stumbled on this trick... | ```diff
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 613b383ed8b3..7b527d18aa5e 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -122,16 +122,11 @@ choice
If unsure, select Generic.
config POWERPC64_CPU
- boo... |
02c1b0824eb1873b15676257cf1dc80070927e1e | Analyze and fix the following issue in the Linux kernel code: KVM: PPC: Fix misleading interrupts comment in kvmppc_prepare_to_enter() | Problem Details:
Until commit 6c85f52b10fd ("kvm/ppc: IRQ disabling cleanup"),
kvmppc_prepare_to_enter() was called with interrupts already disabled by
the caller, which was documented in the comment above the function.
Post-cleanup, the function is now called with interrupts enabled, and
disables interrupts itself.
... | ```diff
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 153587741864..2ba057171ebe 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -69,7 +69,7 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
/*
* Common checks before entering the guest world. Call wit... |
f0cb3463d0244765ab66792a88dc5e2152c130e1 | Analyze and fix the following issue in the Linux kernel code: clk: renesas: r9a08g045: Add MSTOP for GPIO | Problem Details:
The GPIO module also supports MSTOP. Add it in the description of the gpio
clock.
Fixes: c49695952746 ("clk: renesas: r9a08g045: Drop power domain instantiation")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lo... | ```diff
diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
index c4639ad22b8b..79e7b19c7882 100644
--- a/drivers/clk/renesas/r9a08g045-cpg.c
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -285,7 +285,8 @@ static const struct rzg2l_mod_clk r9a08g045_mod_clks[] = {
MSTOP(BUS_MCPU2,... |
7d1e3aa2826a22f68f1850c31ac96348272fa356 | Analyze and fix the following issue in the Linux kernel code: arm64: dts: renesas: sparrow-hawk: Set VDDQ18_25_AVB voltage on EVTB1 | Problem Details:
The Retronix R-Car V4H Sparrow Hawk EVTB1 uses 1V8 IO voltage supply
for VDDQ18_25_AVB power rail. Update the AVB0 pinmux to reflect the
change in IO voltage. Since the VDDQ18_25_AVB power rail is shared,
all four AVB0, AVB1, AVB2, TSN0 PFC/GPIO POC[7..4] registers have to
be configured the same way. A... | ```diff
diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
index 33c6c2a5c2c5..1da8e476b219 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
@@ -592,6 +592,10 @@
driv... |
ae95807b00e1639b3f6ab94eb2cd887266e4f766 | Analyze and fix the following issue in the Linux kernel code: arm64: dts: renesas: sparrow-hawk: Invert microSD voltage selector on EVTB1 | Problem Details:
Invert the polarity of microSD voltage selector on Retronix R-Car V4H
Sparrow Hawk board. The voltage selector was not populated on prototype
EVTA1 boards, and is implemented slightly different on EVTB1 boards. As
the EVTA1 boards are from a limited run and generally not available,
update the DT to mak... | ```diff
diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
index 75b1b789ae1d..33c6c2a5c2c5 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
@@ -186,7 +186,7 @@
regula... |
3f4422e7c9436abf81a00270be7e4d6d3760ec0e | Analyze and fix the following issue in the Linux kernel code: ALSA: hda: tas2781: Fix wrong reference of tasdevice_priv | Problem Details:
During the conversion to unify the calibration data management, the
reference to tasdevice_priv was wrongly set to h->hda_priv instead of
h->priv. This resulted in memory corruption and crashes eventually.
Unfortunately it's a void pointer, hence the compiler couldn't know
that it's wrong.
Fixes: 4fe... | ```diff
diff --git a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c
index b91fff3fde97..e34b17f0c9b9 100644
--- a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c
+++ b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c
@@ -305,7 +305,7 @@ static int tas2563_save_calibration(s... |
0c5e2ae204eca74e4ccbaffc8125c3b41de9c9b8 | Analyze and fix the following issue in the Linux kernel code: ALSA: usb-audio: us144mkii: Fix null-deref in tascam_midi_in_urb_complete() | Problem Details:
The smatch tool reported a potential null pointer dereference in
tascam_midi_in_urb_complete(). The 'tascam' variable, derived from
'urb->context', was checked for nullity in one place, but dereferenced
without a check in several other places.
This patch fixes the issue by adding a null check at the b... | ```diff
diff --git a/sound/usb/usx2y/us144mkii_midi.c b/sound/usb/usx2y/us144mkii_midi.c
index 5759f601007f..08b04aa39278 100644
--- a/sound/usb/usx2y/us144mkii_midi.c
+++ b/sound/usb/usx2y/us144mkii_midi.c
@@ -41,6 +41,9 @@ void tascam_midi_in_urb_complete(struct urb *urb)
struct tascam_card *tascam = urb->context;
... |
9b1795e9b0ae6d8b2c50987048170f77d0dc0300 | Analyze and fix the following issue in the Linux kernel code: drm/i915/psr: Underrun on idle PSR wa only when pkgc latency > delayed vblank | Problem Details:
Underrun on idle PSR workaround (Wa_16025596647) is supposed to be
applied only when pkg c latency > delayed vblank. Currently we are
applying it always when other criterias are met.
Fix this by adding new boolean flag which is supposed to be set when
calculating watermark levels and pkgc latency > de... | ```diff
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 0d945d1fedd6..fd9d2527889b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1121,6 +1121,7 @@ struct intel_crtc_s... |
72907ea795e0bf261def10595d19ded441b90d9f | Analyze and fix the following issue in the Linux kernel code: cpufreq: mediatek-hw: don't use error path on NULL fdvfs | Problem Details:
The IS_ERR_OR_NULL check for priv->fdvfs is inappropriate, and should be
an IS_ERR check instead, as a NULL value here would propagate it to
PTR_ERR.
In practice, there is no problem here, as devm_of_iomap cannot return
NULL in any circumstance. However, it causes a Smatch static checker
warning.
Fix... | ```diff
diff --git a/drivers/cpufreq/mediatek-cpufreq-hw.c b/drivers/cpufreq/mediatek-cpufreq-hw.c
index e4eadce6f937..fce5aa5ceea0 100644
--- a/drivers/cpufreq/mediatek-cpufreq-hw.c
+++ b/drivers/cpufreq/mediatek-cpufreq-hw.c
@@ -72,7 +72,7 @@ static const struct mtk_cpufreq_variant cpufreq_mtk_base_variant = {
stati... |
d1c1400bd3b8b436df3bc49d6b420b3184f7dda4 | Analyze and fix the following issue in the Linux kernel code: arm64: dts: imx8mp: Add initial support for Ultratronik imx8mp-ultra-mach-sbc board | Problem Details:
Add initial device tree support for the Ultratronik Ultra-MACH SBC
based on the NXP i.MX8M Plus SoC with 2GB LPDDR4.
The board features:
- 1 x USB 2.0 Host
- 1 x USB 2.0 via USB-C
- Debug UART + 1 x UART + 1 x USART
- SD card and eMMC support
- 2 x Ethernet (RJ45)
- HDMI
This initial DTS enables basi... | ```diff
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 23535ed47631..6ee4bd67802c 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -237,6 +237,7 @@ imx8mp-tx8p-ml81-moduline-display-106-av123z7m-n17-dtbs += imx8mp-tx8... |
2cd58fec912acec273cb155911ab8f06ddbb131a | Analyze and fix the following issue in the Linux kernel code: microchip: lan865x: fix missing Timer Increment config for Rev.B0/B1 | Problem Details:
Fix missing configuration for LAN865x silicon revisions B0 and B1 as per
Microchip Application Note AN1760 (Rev F, June 2024).
The Timer Increment register was not being set, which is required for
accurate timestamping. As per the application note, configure the MAC to
set timestamping at the end of t... | ```diff
diff --git a/drivers/net/ethernet/microchip/lan865x/lan865x.c b/drivers/net/ethernet/microchip/lan865x/lan865x.c
index d03f5a8de58d..84c41f193561 100644
--- a/drivers/net/ethernet/microchip/lan865x/lan865x.c
+++ b/drivers/net/ethernet/microchip/lan865x/lan865x.c
@@ -32,6 +32,10 @@
/* MAC Specific Addr 1 Top Re... |
1683fd1b2fa79864d3c7a951d9cea0a9ba1a1923 | Analyze and fix the following issue in the Linux kernel code: microchip: lan865x: fix missing netif_start_queue() call on device open | Problem Details:
This fixes an issue where the transmit queue is started implicitly only
the very first time the device is registered. When the device is taken
down and brought back up again (using `ip` or `ifconfig`), the transmit
queue is not restarted, causing packet transmission to hang.
Adding an explicit call to... | ```diff
diff --git a/drivers/net/ethernet/microchip/lan865x/lan865x.c b/drivers/net/ethernet/microchip/lan865x/lan865x.c
index dd436bdff0f8..d03f5a8de58d 100644
--- a/drivers/net/ethernet/microchip/lan865x/lan865x.c
+++ b/drivers/net/ethernet/microchip/lan865x/lan865x.c
@@ -311,6 +311,8 @@ static int lan865x_net_open(s... |
dd91c79e4f58fbe2898dac84858033700e0e99fb | Analyze and fix the following issue in the Linux kernel code: sctp: Fix MAC comparison to be constant-time | Problem Details:
To prevent timing attacks, MACs need to be compared in constant time.
Use the appropriate helper function for this.
Fixes: bbd0d59809f9 ("[SCTP]: Implement the receive and verification of AUTH chunk")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebig... | ```diff
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 3ead591c72fd..d099b605e44a 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -31,6 +31,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <crypto/hash.h>
+#include <crypto/utils.h>
#include <linux/types.h>
... |
d2d6f950cb43be6845a41cac5956cb2a10e657e5 | Analyze and fix the following issue in the Linux kernel code: net/mlx5: CT: Use the correct counter offset | Problem Details:
Specifying the counter action is not enough, as it is used by multiple
counters that were allocated in a bulk. By omitting the offset, rules
will be associated with a different counter from the same bulk.
Subsequently, the CT subsystem checks the correct counter, assumes that
no traffic has triggered t... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/ct_fs_hmfs.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/ct_fs_hmfs.c
index a4263137fef5..01d522b02947 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/ct_fs_hmfs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/ct_fs_hmfs.c
@@ -173,6... |
8a51507320ebddaab32610199774f69cd7d53e78 | Analyze and fix the following issue in the Linux kernel code: net/mlx5: HWS, Fix table creation UID | Problem Details:
During table creation, caller passes a UID using ft_attr. The UID
value was ignored, which leads to problems when the caller sets the
UID to a non-zero value, such as SHARED_RESOURCE_UID (0xffff) - the
internal FT objects will be created with UID=0.
Fixes: 0869701cba3d ("net/mlx5: HWS, added FW comman... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/cmd.c
index 9c83753e4592..0bdcab2e5cf3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/cmd.c
@@ -55,6 ... |
7c60952f83584bc4950057cfed2cc3c87343b5db | Analyze and fix the following issue in the Linux kernel code: net/mlx5: HWS, don't rehash on every kind of insertion failure | Problem Details:
If rule creation failed due to a full queue, due to timeout
in polling for completion, or due to matcher being in resize,
don't try to initiate rehash sequence - rehash would have
failed anyway.
Fixes: 2111bb970c78 ("net/mlx5: HWS, added backward-compatible API handling")
Signed-off-by: Yevgeny Klitey... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
index 2a59be11fe55..adeccc588e5d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
@@ -1063,... |
1a72298d27ce4d41b3fd405f6921e8711815767a | Analyze and fix the following issue in the Linux kernel code: net/mlx5: HWS, prevent rehash from filling up the queues | Problem Details:
While moving the rules during rehash, CQ is not drained. The flush
and drain happens only when all the rules of a certain queue have been
moved. This behaviour can lead to accumulating large quantity of rules
that haven't got their completion yet, and eventually will fill up
the queue and will cause th... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
index 0219a49b2326..2a59be11fe55 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
@@ -84,6 ... |
4a842b1bf18a32ee0c25dd6dd98728b786a76fe4 | Analyze and fix the following issue in the Linux kernel code: net/mlx5: HWS, fix complex rules rehash error flow | Problem Details:
Moving rules from matcher to matcher should not fail.
However, if it does fail due to various reasons, the error flow
should allow the kernel to continue functioning (albeit with broken
steering rules) instead of going into series of soft lock-ups or
some other problematic behaviour.
Similar to the si... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc_complex.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc_complex.c
index ca7501c57468..14e79579c719 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc_complex.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/stee... |
615b690612b7785ab8632f6a5a941550622e4e36 | Analyze and fix the following issue in the Linux kernel code: net/mlx5: HWS, fix simple rules rehash error flow | Problem Details:
Moving rules from matcher to matcher should not fail.
However, if it does fail due to various reasons, the error flow
should allow the kernel to continue functioning (albeit with broken
steering rules) instead of going into series of soft lock-ups or
some other problematic behaviour.
This patch fixes ... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
index 92de4b761a83..0219a49b2326 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c
@@ -74,9 ... |
36def5f2b958113b9009144fb54b0cee2c11afb5 | Analyze and fix the following issue in the Linux kernel code: arm64: dts: freescale: imx93-phycore-som: Delay the phy reset by a gpio | Problem Details:
According to the datasheet the phy needs to be held in reset until the
reference clock got stable. Even though no issue was observed, fix this
as the software should always comply with the specification.
Use gpio4 23, which is connected to the phy reset pin. On the same pin
RX_ER was used before, but ... | ```diff
diff --git a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
index c6f5aa38ebf9..89552ae70660 100644
--- a/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi
@@ -85,6 +85,8 @@
ethphy1: eth... |
2462c1b9217246a889ec318b3894d84e4dd709c6 | Analyze and fix the following issue in the Linux kernel code: net/mlx5: HWS, fix bad parameter in CQ creation | Problem Details:
'cqe_sz' valid value should be 0 for 64-byte CQE.
Fixes: 2ca62599aa0b ("net/mlx5: HWS, added send engine and context handling")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Vlad Dogaru <vdogaru@nvidia.com>
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Link: https://patch.msgid.li... | ```diff
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/send.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/send.c
index c4b22be19a9b..b0595c9b09e4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/send.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/send.c
@@ -9... |
edb35b1ffc686fd9b5a91902f034eb9f4d2c9f6b | Analyze and fix the following issue in the Linux kernel code: scsi: myrs: Fix dma_alloc_coherent() error check | Problem Details:
Check for NULL return value with dma_alloc_coherent(), because DMA
address is not always set by dma_alloc_coherent() on failure.
Fixes: 77266186397c ("scsi: myrs: Add Mylex RAID controller (SCSI interface)")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Link: https://lore.kernel.org/r/20250... | ```diff
diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c
index 95af3bb03834..a58abd796603 100644
--- a/drivers/scsi/myrs.c
+++ b/drivers/scsi/myrs.c
@@ -498,14 +498,14 @@ static bool myrs_enable_mmio_mbox(struct myrs_hba *cs,
/* Temporary dma mapping, used only in the scope of this function */
mbox = dma_allo... |
68889dfd547bd8eabc5a98b58475d7b901cf5129 | Analyze and fix the following issue in the Linux kernel code: mptcp: Fix up subflow's memcg when CONFIG_SOCK_CGROUP_DATA=n. | Problem Details:
When sk_alloc() allocates a socket, mem_cgroup_sk_alloc() sets
sk->sk_memcg based on the current task.
MPTCP subflow socket creation is triggered from userspace or
an in-kernel worker.
In the latter case, sk->sk_memcg is not what we want. So, we fix
it up from the parent socket's sk->sk_memcg in mpt... | ```diff
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 785173aa0739..25921fbec685 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1604,6 +1604,7 @@ extern struct static_key_false memcg_sockets_enabled_key;
#define mem_cgroup_sockets_enabled static_branch_unlikel... |
6f4b10226b6b1e7d1ff3cdb006cf0f6da6eed71e | Analyze and fix the following issue in the Linux kernel code: scsi: qla2xxx: Fix memcpy() field-spanning write issue | Problem Details:
purex_item.iocb is defined as a 64-element u8 array, but 64 is the
minimum size and it can be allocated larger. This makes it a standard
empty flex array.
This was motivated by field-spanning write warnings during FPIN testing:
https://lore.kernel.org/linux-nvme/20250709211919.49100-1-bgurney@redhat.... | ```diff
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index cb95b7b12051..604e66bead1e 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -4890,9 +4890,7 @@ struct purex_item {
struct purex_item *pkt);
atomic_t in_use;
uint16_t size;
- struct ... |
6b5da52a1825d600cdee1dd8bf90e95fa12620f0 | Analyze and fix the following issue in the Linux kernel code: scsi: scsi_debug: Use vcalloc() to simplify code | Problem Details:
Use vcalloc() instead of vmalloc() followed by bitmap_zero() to simplify
the function sdebug_add_store().
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://lore.kernel.org/r/20250806124633.383426-3-rongqianfeng@vivo.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: ... | ```diff
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 0847767d4d43..90943857243c 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -8782,8 +8782,8 @@ static int sdebug_add_store(void)
/* Logical Block Provisioning */
if (scsi_debug_lbp()) {
map_size = lba_to_map... |
e115d3d70ecc674df2e716e7030893424fa110fb | Analyze and fix the following issue in the Linux kernel code: scsi: hpsa: Fix incorrect comment format | Problem Details:
Comments should not have a leading plus sign.
Signed-off-by: Cryolitia PukNgae <cryolitia@uniontech.com>
Link: https://lore.kernel.org/r/20250806-scsi_typo-v1-1-ec353a303b31@uniontech.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> | ```diff
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index c73a71ac3c29..3bb7a1d9af53 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -7632,8 +7632,8 @@ static void hpsa_free_cfgtables(struct ctlr_info *h)
}
/* Find and map CISS config table and transfer table
-+ * several items must be unma... |
d9cef55ed49117bd63695446fb84b4b91815c0b4 | Analyze and fix the following issue in the Linux kernel code: net/smc: fix UAF on smcsk after smc_listen_out() | Problem Details:
BPF CI testing report a UAF issue:
[ 16.446633] BUG: kernel NULL pointer dereference, address: 000000000000003 0
[ 16.447134] #PF: supervisor read access in kernel mod e
[ 16.447516] #PF: error_code(0x0000) - not-present pag e
[ 16.447878] PGD 0 P4D 0
[ 16.448063] Oops: Oops: ... | ```diff
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 9311c38f7abe..e0e48f24cd61 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -2568,8 +2568,9 @@ static void smc_listen_work(struct work_struct *work)
goto out_decl;
}
- smc_listen_out_connected(new_smc);
SMC_STAT_SERV_SUCC_INC(sock_net(newcl... |
6d6714bf0c4e8eb2274081b4b023dfa01581c123 | Analyze and fix the following issue in the Linux kernel code: net: stmmac: thead: Enable TX clock before MAC initialization | Problem Details:
The clk_tx_i clock must be supplied to the MAC for successful
initialization. On TH1520 SoC, the clock is provided by an internal
divider configured through GMAC_PLLCLK_DIV register when using RGMII
interface. However, currently we don't setup the divider before
initialization of the MAC, resulting in ... | ```diff
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c
index f2946bea0bc2..6c6c49e4b66f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c
@@ -152,7 +152,7 @@ static int thead_set_clk_... |
09bde6fdcd752b4512e7b554a3259e4f6b77c6d1 | Analyze and fix the following issue in the Linux kernel code: ipv6: ip6_gre: replace strcpy with strscpy for tunnel name | Problem Details:
Replace the strcpy() call that copies the device name into
tunnel->parms.name with strscpy(), to avoid potential overflow
and guarantee NULL termination. This uses the two-argument
form of strscpy(), where the destination size is inferred
from the array type.
Destination is tunnel->parms.name (size IF... | ```diff
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 74d49dd6124d..c82a75510c0e 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -329,9 +329,9 @@ static struct ip6_tnl *ip6gre_tunnel_locate(struct net *net,
if (parms->name[0]) {
if (!dev_valid_name(parms->name))
return NULL;
- strscpy... |
75a9a46d67f46d608205888f9b34e315c1786345 | Analyze and fix the following issue in the Linux kernel code: gve: prevent ethtool ops after shutdown | Problem Details:
A crash can occur if an ethtool operation is invoked
after shutdown() is called.
shutdown() is invoked during system shutdown to stop DMA operations
without performing expensive deallocations. It is discouraged to
unregister the netdev in this path, so the device may still be visible
to userspace and ... | ```diff
diff --git a/drivers/net/ethernet/google/gve/gve_main.c b/drivers/net/ethernet/google/gve/gve_main.c
index 1f411d7c4373..1be1b1ef31ee 100644
--- a/drivers/net/ethernet/google/gve/gve_main.c
+++ b/drivers/net/ethernet/google/gve/gve_main.c
@@ -2870,6 +2870,8 @@ static void gve_shutdown(struct pci_dev *pdev)
st... |
24ef2f53c07f273bad99173e27ee88d44d135b1c | Analyze and fix the following issue in the Linux kernel code: net: usb: asix_devices: Fix PHY address mask in MDIO bus initialization | Problem Details:
Syzbot reported shift-out-of-bounds exception on MDIO bus initialization.
The PHY address should be masked to 5 bits (0-31). Without this
mask, invalid PHY addresses could be used, potentially causing issues
with MDIO bus operations.
Fix this by masking the PHY address with 0x1f (31 decimal) to ensur... | ```diff
diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index d9f5942ccc44..792ddda1ad49 100644
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -676,7 +676,7 @@ static int ax88772_init_mdio(struct usbnet *dev)
priv->mdio->read = &asix_mdio_bus_read;
priv->md... |
bc1a59cff9f797bfbf8f3104507584d89e9ecf2e | Analyze and fix the following issue in the Linux kernel code: phy: mscc: Fix timestamping for vsc8584 | Problem Details:
There was a problem when we received frames and the frames were
timestamped. The driver is configured to store the nanosecond part of
the timestmap in the ptp reserved bits and it would take the second part
by reading the LTC. The problem is that when reading the LTC we are in
atomic context and to rea... | ```diff
diff --git a/drivers/net/phy/mscc/mscc.h b/drivers/net/phy/mscc/mscc.h
index 6a3d8a754eb8..58c6d47fbe04 100644
--- a/drivers/net/phy/mscc/mscc.h
+++ b/drivers/net/phy/mscc/mscc.h
@@ -362,6 +362,13 @@ struct vsc85xx_hw_stat {
u16 mask;
};
+struct vsc8531_skb_cb {
+ u32 ns;
+};
+
+#define VSC8531_SKB_CB(skb)... |
f179f5bc158f07693b74c264f8933c8b0f07503f | Analyze and fix the following issue in the Linux kernel code: net/sched: sch_dualpi2: Run prob update timer in softirq to avoid deadlock | Problem Details:
When a user creates a dualpi2 qdisc it automatically sets a timer. This
timer will run constantly and update the qdisc's probability field.
The issue is that the timer acquires the qdisc root lock and runs in
hardirq. The qdisc root lock is also acquired in dev.c whenever a packet
arrives for this qdis... | ```diff
diff --git a/net/sched/sch_dualpi2.c b/net/sched/sch_dualpi2.c
index 845375ebd4ea..4b975feb52b1 100644
--- a/net/sched/sch_dualpi2.c
+++ b/net/sched/sch_dualpi2.c
@@ -927,7 +927,8 @@ static int dualpi2_init(struct Qdisc *sch, struct nlattr *opt,
q->sch = sch;
dualpi2_reset_default(sch);
- hrtimer_setup(&q... |
7b128f1d53dcaa324d4aa05d821a6bf4a7b203e7 | Analyze and fix the following issue in the Linux kernel code: rtla: Check pkg-config install | Problem Details:
The tool pkg-config used to check libtraceevent and libtracefs, if not
installed, it will report the libs not found, even though they have
already been installed.
Before:
libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel
libtracefs is missing. Please install libtracefs-dev... | ```diff
diff --git a/tools/tracing/rtla/Makefile.config b/tools/tracing/rtla/Makefile.config
index 5f2231d8d626..07ff5e8f3006 100644
--- a/tools/tracing/rtla/Makefile.config
+++ b/tools/tracing/rtla/Makefile.config
@@ -1,10 +1,18 @@
# SPDX-License-Identifier: GPL-2.0-only
+include $(srctree)/tools/scripts/utilities.... |
26ebba25e210116053609f4c7ee701bffa7ebd7d | Analyze and fix the following issue in the Linux kernel code: tools/latency-collector: Check pkg-config install | Problem Details:
The tool pkg-config used to check libtraceevent and libtracefs, if not
installed, it will report the libs not found, even though they have
already been installed.
Before:
libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel
libtracefs is missing. Please install libtracefs-dev... | ```diff
diff --git a/tools/tracing/latency/Makefile.config b/tools/tracing/latency/Makefile.config
index 0fe6b50f029b..6efa13e3ca93 100644
--- a/tools/tracing/latency/Makefile.config
+++ b/tools/tracing/latency/Makefile.config
@@ -1,7 +1,15 @@
# SPDX-License-Identifier: GPL-2.0-only
+include $(srctree)/tools/scripts... |
772e5b4a5e8360743645b9a466842d16092c4f94 | Analyze and fix the following issue in the Linux kernel code: mm/mremap: fix WARN with uffd that has remap events disabled | Problem Details:
Registering userfaultd on a VMA that spans at least one PMD and then
mremap()'ing that VMA can trigger a WARN when recovering from a failed
page table move due to a page table allocation error.
The code ends up doing the right thing (recurse, avoiding moving actual
page tables), but triggering that WA... | ```diff
diff --git a/mm/mremap.c b/mm/mremap.c
index 33b642076205..e618a706aff5 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -323,6 +323,25 @@ static inline bool arch_supports_page_table_move(void)
}
#endif
+static inline bool uffd_supports_page_table_move(struct pagetable_move_control *pmc)
+{
+ /*
+ * If we are... |
ba1dd7ac735d604249f1e614d997dc66b30844ab | Analyze and fix the following issue in the Linux kernel code: mm/damon/sysfs-schemes: put damos dests dir after removing its files | Problem Details:
damon_sysfs_scheme_rm_dirs() puts dests directory kobject before removing
its internal files. Sincee putting the kobject frees its container
struct, and the internal files removal accesses the container,
use-after-free happens. Fix it by putting the reference _after_ removing
the files.
Link: https:... | ```diff
diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index 74056bcd6a2c..6536f16006c9 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -2158,8 +2158,8 @@ static void damon_sysfs_scheme_rm_dirs(struct damon_sysfs_scheme *scheme)
{
damon_sysfs_access_pattern_rm_dirs(scheme->a... |
053c8ebe74f7e1f4c072e59428da80b9d78bc4b7 | Analyze and fix the following issue in the Linux kernel code: mm/migrate: fix NULL movable_ops if CONFIG_ZSMALLOC=m | Problem Details:
After commit 84caf98838a3e5f4bdb34 ("mm: stop storing migration_ops in
page->mapping") we get such an error message if CONFIG_ZSMALLOC=m:
WARNING: CPU: 3 PID: 42 at mm/migrate.c:142 isolate_movable_ops_page+0xa8/0x1c0
CPU: 3 UID: 0 PID: 42 Comm: kcompactd0 Not tainted 6.16.0-rc5+ #2133 PREEMPT
pc 9... | ```diff
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index acadd41e0b5c..9009e27b5f44 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -79,6 +79,7 @@ void migration_entry_wait_on_locked(swp_entry_t entry, spinlock_t *ptl)
void folio_migrate_flags(struct folio *newfolio, struct fo... |
b3dee902b6c26b7d8031a4df19753e27dcfcba01 | Analyze and fix the following issue in the Linux kernel code: mm/damon/core: fix damos_commit_filter not changing allow | Problem Details:
Current damos_commit_filter() does not persist the `allow' value of the
filter. As a result, changing the `allow' value of a filter and
committing doesn't change the `allow' value.
Add the missing `allow' value update, so committing the filter
persistently changes the `allow' value well.
Link: https... | ```diff
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 467c2d78126f..70eff5cbe6ee 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -883,6 +883,7 @@ static void damos_commit_filter(
{
dst->type = src->type;
dst->matching = src->matching;
+ dst->allow = src->allow;
damos_commit_filter_arg(dst, src);
}
... |
2e6053fea379806269c4f7f5e36b523c9c0fb35c | Analyze and fix the following issue in the Linux kernel code: mm/memory-failure: fix infinite UCE for VM_PFNMAP pfn | Problem Details:
When memory_failure() is called for a already hwpoisoned pfn,
kill_accessing_process() will be called to kill current task. However, if
the vma of the accessing vaddr is VM_PFNMAP, walk_page_range() will skip
the vma in walk_page_test() and return 0.
Before commit aaf99ac2ceb7 ("mm/hwpoison: do not s... | ```diff
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index e2e685b971bb..fc30ca4804bf 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -853,9 +853,17 @@ static int hwpoison_hugetlb_range(pte_t *ptep, unsigned long hmask,
#define hwpoison_hugetlb_range NULL
#endif
+static int hwpoison_test_wal... |
808471ddb0fa785559c3e7aee59be20a13b46ef5 | Analyze and fix the following issue in the Linux kernel code: iov_iter: iterate_folioq: fix handling of offset >= folio size | Problem Details:
It's apparently possible to get an iov advanced all the way up to the end
of the current page we're looking at, e.g.
(gdb) p *iter
$24 = {iter_type = 4 '\004', nofault = false, data_source = false, iov_offset = 4096, {__ubuf_iovec = {
iov_base = 0xffff88800f5bc000, iov_len = 655}, {{__iov = 0xff... | ```diff
diff --git a/include/linux/iov_iter.h b/include/linux/iov_iter.h
index c4aa58032faf..f9a17fbbd398 100644
--- a/include/linux/iov_iter.h
+++ b/include/linux/iov_iter.h
@@ -160,7 +160,7 @@ size_t iterate_folioq(struct iov_iter *iter, size_t len, void *priv, void *priv2
do {
struct folio *folio = folioq_fol... |
0cc2a4880ced1486acc34898cd85edc6ee109c4c | Analyze and fix the following issue in the Linux kernel code: selftests/damon: fix selftests by installing drgn related script | Problem Details:
drgn_dump_damon_status is not installed during kselftest setup. It can
break other tests which depend on drgn_dump_damon_status. Install
drgn_dump_damon_status files to fix broken test.
Link: https://lkml.kernel.org/r/20250812140046.660486-1-ekffu200098@gmail.com
Fixes: f3e8e1e51362 ("selftests/damo... | ```diff
diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile
index 5b230deb19e8..9a3499827d4b 100644
--- a/tools/testing/selftests/damon/Makefile
+++ b/tools/testing/selftests/damon/Makefile
@@ -4,6 +4,7 @@
TEST_GEN_FILES += access_memory access_memory_even
TEST_FILES = _damo... |
742d3663a5775cb7b957f4ca2ddb4ccd26badb94 | Analyze and fix the following issue in the Linux kernel code: selftests/mm: add test for invalid multi VMA operations | Problem Details:
We can use UFFD to easily assert invalid multi VMA moves, so do so,
asserting expected behaviour when VMAs invalid for a multi VMA operation
are encountered.
We assert both that such operations are not permitted, and that we do not
even attempt to move the first VMA under these circumstances.
We also... | ```diff
diff --git a/tools/testing/selftests/mm/mremap_test.c b/tools/testing/selftests/mm/mremap_test.c
index fccf9e797a0c..5bd52a951cbd 100644
--- a/tools/testing/selftests/mm/mremap_test.c
+++ b/tools/testing/selftests/mm/mremap_test.c
@@ -5,10 +5,14 @@
#define _GNU_SOURCE
#include <errno.h>
+#include <fcntl.h>
... |
63f5dec16760f2cd7d3f9034d18fc1fa0d83652f | Analyze and fix the following issue in the Linux kernel code: mm/damon/core: fix commit_ops_filters by using correct nth function | Problem Details:
damos_commit_ops_filters() incorrectly uses damos_nth_filter() which
iterates core_filters. As a result, performing a commit unintentionally
corrupts ops_filters.
Add damos_nth_ops_filter() which iterates ops_filters. Use this function
to fix issues caused by wrong iteration.
Link: https://lkml.ker... | ```diff
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 52a48c9316bc..467c2d78126f 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -845,6 +845,18 @@ static struct damos_filter *damos_nth_filter(int n, struct damos *s)
return NULL;
}
+static struct damos_filter *damos_nth_ops_filter(int n, struct damos *... |
9a6a6a3191574a01dcf7a7d9385246d7bc8736bc | Analyze and fix the following issue in the Linux kernel code: tools/testing: add linux/args.h header and fix radix, VMA tests | Problem Details:
Commit 857d18f23ab1 ("cleanup: Introduce ACQUIRE() and ACQUIRE_ERR() for
conditional locks") accidentally broke the radix tree, VMA userland tests
by including linux/args.h which is not present in the tools/include
directory.
This patch copies this over and adds an #ifdef block to avoid duplicate
__CO... | ```diff
diff --git a/tools/include/linux/args.h b/tools/include/linux/args.h
new file mode 100644
index 000000000000..2e8e65d975c7
--- /dev/null
+++ b/tools/include/linux/args.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _LINUX_ARGS_H
+#define _LINUX_ARGS_H
+
+/*
+ * How do these macros work?
+... |
dde30854bddfb5d69f30022b53c5955a41088b33 | Analyze and fix the following issue in the Linux kernel code: mm/debug_vm_pgtable: clear page table entries at destroy_args() | Problem Details:
The mm/debug_vm_pagetable test allocates manually page table entries for
the tests it runs, using also its manually allocated mm_struct. That in
itself is ok, but when it exits, at destroy_args() it fails to clear those
entries with the *_clear functions.
The problem is that leaves stale entries. If... | ```diff
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c
index d19031f275a3..830107b6dd08 100644
--- a/mm/debug_vm_pgtable.c
+++ b/mm/debug_vm_pgtable.c
@@ -990,29 +990,34 @@ static void __init destroy_args(struct pgtable_debug_args *args)
/* Free page table entries */
if (args->start_ptep) {
+ pmd_cle... |
b64700d41bdc4e9f82f1346c15a3678ebb91a89c | Analyze and fix the following issue in the Linux kernel code: squashfs: fix memory leak in squashfs_fill_super | Problem Details:
If sb_min_blocksize returns 0, squashfs_fill_super exits without freeing
allocated memory (sb->s_fs_info).
Fix this by moving the call to sb_min_blocksize to before memory is
allocated.
Link: https://lkml.kernel.org/r/20250811223740.110392-1-phillip@squashfs.org.uk
Fixes: 734aa85390ea ("Squashfs: che... | ```diff
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 992ea0e37257..4465cf05603a 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -187,10 +187,15 @@ static int squashfs_fill_super(struct super_block *sb, struct fs_context *fc)
unsigned short flags;
unsigned int fragments;
u64 lookup_ta... |
8b66ed2c3f42cc462e05704af6b94e6a7bad2f5e | Analyze and fix the following issue in the Linux kernel code: kho: mm: don't allow deferred struct page with KHO | Problem Details:
KHO uses struct pages for the preserved memory early in boot, however,
with deferred struct page initialization, only a small portion of memory
has properly initialized struct pages.
This problem was detected where vmemmap is poisoned, and illegal flag
combinations are detected.
Don't allow them to b... | ```diff
diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec
index 2ee603a98813..1224dd937df0 100644
--- a/kernel/Kconfig.kexec
+++ b/kernel/Kconfig.kexec
@@ -97,6 +97,7 @@ config KEXEC_JUMP
config KEXEC_HANDOVER
bool "kexec handover"
depends on ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE
+ depend... |
63b17b653df30e90f95338083cb44c35d64bcae4 | Analyze and fix the following issue in the Linux kernel code: kho: init new_physxa->phys_bits to fix lockdep | Problem Details:
Patch series "Several KHO Hotfixes".
Three unrelated fixes for Kexec Handover.
This patch (of 3):
Lockdep shows the following warning:
INFO: trying to register non-static key. The code is fine but needs
lockdep annotation, or maybe you didn't initialize this object before use?
turning off the loc... | ```diff
diff --git a/kernel/kexec_handover.c b/kernel/kexec_handover.c
index e49743ae52c5..65145972d6d6 100644
--- a/kernel/kexec_handover.c
+++ b/kernel/kexec_handover.c
@@ -144,14 +144,34 @@ static int __kho_preserve_order(struct kho_mem_track *track, unsigned long pfn,
unsigned int order)
{
struct kho_mem_ph... |
2e6fe1bbefd9c059c3787d1c620fe67343a94dff | Analyze and fix the following issue in the Linux kernel code: EDAC/i10nm: Skip DIMM enumeration on a disabled memory controller | Problem Details:
When loading the i10nm_edac driver on some Intel Granite Rapids servers,
a call trace may appear as follows:
UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c:453:16
shift exponent -66 is negative
...
__ubsan_handle_shift_out_of_bounds+0x1e3/0x390
skx_get_dimm_info.cold+0x47/0xd40 [skx... | ```diff
diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index bf4171ac191d..9d00f247f4e0 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -1057,6 +1057,15 @@ static bool i10nm_check_ecc(struct skx_imc *imc, int chan)
return !!GET_BITFIELD(mcmtr, 2, 2);
}
+static bool i10... |
82b350dd8185ce790e61555c436f90b6501af23c | Analyze and fix the following issue in the Linux kernel code: i2c: rtl9300: Add missing count byte for SMBus Block Ops | Problem Details:
The expected on-wire format of an SMBus Block Write is
S Addr Wr [A] Comm [A] Count [A] Data [A] Data [A] ... [A] Data [A] P
Everything starting from the Count byte is provided by the I2C subsystem in
the array data->block. But the driver was skipping the Count byte
(data->block[0]) when sending it... | ```diff
diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c
index 4a282d57e2c1..cfafe089102a 100644
--- a/drivers/i2c/busses/i2c-rtl9300.c
+++ b/drivers/i2c/busses/i2c-rtl9300.c
@@ -285,15 +285,15 @@ static int rtl9300_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned s
ret = ... |
ceee7776c010c5f09d30985c9e5223b363a6172a | Analyze and fix the following issue in the Linux kernel code: i2c: rtl9300: Increase timeout for transfer polling | Problem Details:
The timeout for transfers was only set to 2ms. Because of this relatively
low limit, 12-byte read operations to the frontend MCU of a RTL8239 POE PSE
chip cluster was consistently resulting in a timeout.
The original OpenWrt downstream driver [1] was not using any timeout limit
at all. This is also po... | ```diff
diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c
index 4a538b266080..4a282d57e2c1 100644
--- a/drivers/i2c/busses/i2c-rtl9300.c
+++ b/drivers/i2c/busses/i2c-rtl9300.c
@@ -175,7 +175,7 @@ static int rtl9300_i2c_execute_xfer(struct rtl9300_i2c *i2c, char read_write,
return ret;
... |
d67b740b9edfa46310355e2b68050f79ebf05a4c | Analyze and fix the following issue in the Linux kernel code: i2c: rtl9300: Fix multi-byte I2C write | Problem Details:
The RTL93xx I2C controller has 4 32 bit registers to store the bytes for
the upcoming I2C transmission. The first byte is stored in the
least-significant byte of the first register. And the last byte in the most
significant byte of the last register. A map of the transferred bytes to
their order in the... | ```diff
diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c
index 568495720810..4a538b266080 100644
--- a/drivers/i2c/busses/i2c-rtl9300.c
+++ b/drivers/i2c/busses/i2c-rtl9300.c
@@ -143,10 +143,10 @@ static int rtl9300_i2c_write(struct rtl9300_i2c *i2c, u8 *buf, int len)
return -EIO;
... |
57f312b955938fc4663f430cb57a71f2414f601b | Analyze and fix the following issue in the Linux kernel code: i2c: rtl9300: Fix out-of-bounds bug in rtl9300_i2c_smbus_xfer | Problem Details:
The data->block[0] variable comes from user. Without proper check,
the variable may be very large to cause an out-of-bounds bug.
Fix this bug by checking the value of data->block[0] first.
1. commit 39244cc75482 ("i2c: ismt: Fix an out-of-bounds bug in
ismt_access()")
2. commit 92fbb6d1296f ("i2c:... | ```diff
diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c
index e064e8a4a1f0..568495720810 100644
--- a/drivers/i2c/busses/i2c-rtl9300.c
+++ b/drivers/i2c/busses/i2c-rtl9300.c
@@ -281,6 +281,10 @@ static int rtl9300_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned s
ret = rt... |
885df2d2109a60f84d84639ce6d95a91045f6c45 | Analyze and fix the following issue in the Linux kernel code: KVM: x86: Add support for RDMSR/WRMSRNS w/ immediate on Intel | Problem Details:
Add support for the immediate forms of RDMSR and WRMSRNS (currently
Intel-only). The immediate variants are only valid in 64-bit mode, and
use a single general purpose register for the data (the register is also
encoded in the instruction, i.e. not implicit like regular RDMSR/WRMSR).
The immediate va... | ```diff
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index d7680612ba1e..dbdec6025fde 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -929,6 +929,7 @@ struct kvm_vcpu_arch {
bool emulate_regs_need_sync_from_vcpu;
int (*complete_userspace_io)(st... |
0910dd7c9ad45a2605c45fd2bf3d1bcac087687c | Analyze and fix the following issue in the Linux kernel code: KVM: SVM: Skip fastpath emulation on VM-Exit if next RIP isn't valid | Problem Details:
Skip the WRMSR and HLT fastpaths in SVM's VM-Exit handler if the next RIP
isn't valid, e.g. because KVM is running with nrips=false. SVM must
decode and emulate to skip the instruction if the CPU doesn't provide the
next RIP, and getting the instruction bytes to decode requires reading
guest memory. ... | ```diff
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index d9931c6c4bc6..829d9d46718d 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4181,13 +4181,21 @@ static int svm_vcpu_pre_run(struct kvm_vcpu *vcpu)
static fastpath_t svm_exit_handlers_fastpath(struct kvm_vcpu *vcpu)
{
stru... |
68e61f6fd65610e73b17882f86fedfd784d99229 | Analyze and fix the following issue in the Linux kernel code: KVM: SVM: Emulate PERF_CNTR_GLOBAL_STATUS_SET for PerfMonV2 | Problem Details:
Emulate PERF_CNTR_GLOBAL_STATUS_SET when PerfMonV2 is enumerated to the
guest, as the MSR is supposed to exist in all AMD v2 PMUs.
Fixes: 4a2771895ca6 ("KVM: x86/svm/pmu: Add AMD PerfMonV2 support")
Cc: stable@vger.kernel.org
Cc: Sandipan Das <sandipan.das@amd.com>
Link: https://lore.kernel.org/r/2025... | ```diff
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index b65c3ba5fa14..20fa4a79df13 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -733,6 +733,7 @@
#define MSR_AMD64_PERF_CNTR_GLOBAL_STATUS 0xc0000300
#define MSR_AMD64_PERF_CNTR_GLOBAL_CTL... |
76d2e3890fb169168c73f2e4f8375c7cc24a765e | Analyze and fix the following issue in the Linux kernel code: NFS: Fix a race when updating an existing write | Problem Details:
After nfs_lock_and_join_requests() tests for whether the request is
still attached to the mapping, nothing prevents a call to
nfs_inode_remove_request() from succeeding until we actually lock the
page group.
The reason is that whoever called nfs_inode_remove_request() doesn't
necessarily have a lock on... | ```diff
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 11968dcb7243..6e69ce43a13f 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -253,13 +253,14 @@ nfs_page_group_unlock(struct nfs_page *req)
nfs_page_clear_headlock(req);
}
-/*
- * nfs_page_group_sync_on_bit_locked
+/**
+ * nfs_page_group_sync... |
8efe8816a7ddc98a733ca3326ae8794750bbbd34 | Analyze and fix the following issue in the Linux kernel code: rust: alloc: add ARCH_KMALLOC_MINALIGN to bindgen blocklist | Problem Details:
For some architectures, such as X86_64, ARCH_KMALLOC_MINALIGN is not
resolvable for bindgen. E.g. due to being defined as
__alignof__(unsigned long long).
Hence, we have to create a rust helper, i.e. let the C compiler evaluate
the expression and store it in a const.
However, if for other architectur... | ```diff
diff --git a/rust/bindgen_parameters b/rust/bindgen_parameters
index 0f96af8b9a7f..02b371b98b39 100644
--- a/rust/bindgen_parameters
+++ b/rust/bindgen_parameters
@@ -34,3 +34,4 @@
# We use const helpers to aid bindgen, to avoid conflicts when constants are
# recognized, block generation of the non-helper con... |
a1f2418c3eea05a2a11ec76a1913e9e8e77039ff | Analyze and fix the following issue in the Linux kernel code: KVM: VMX: Fix an indentation | Problem Details:
Fix an indentation by replacing 8 spaces with a tab.
While at it, add empty lines before and after for better readability.
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Link: https://lore.kernel.org/r/20250715012517.694429-1-xin@zytor.com
Signed-off-by: Sean Christopherson <seanjc@google.com> | ```diff
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index aa157fe5b7b3..92fe8d200335 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -8525,7 +8525,9 @@ __init int vmx_hardware_setup(void)
*/
if (!static_cpu_has(X86_FEATURE_SELFSNOOP))
kvm_caps.supported_quirks &= ~KVM_X86_QU... |
e750f85391286a4c8100275516973324b621a269 | Analyze and fix the following issue in the Linux kernel code: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O | Problem Details:
When completing emulation of instruction that generated a userspace exit
for I/O, don't recheck L1 intercepts as KVM has already finished that
phase of instruction execution, i.e. has already committed to allowing L2
to perform I/O. If L1 (or host userspace) modifies the I/O permission
bitmaps during ... | ```diff
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 1349e278cd2a..542d3664afa3 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -5107,12 +5107,11 @@ void init_decode_cache(struct x86_emulate_ctxt *ctxt)
ctxt->mem_read.end = 0;
}
-int x86_emulate_insn(struct x86_emulate_ctx... |
05f297c3e39f62f579458a59ab1b1c8bf3fc1c51 | Analyze and fix the following issue in the Linux kernel code: KVM: selftests: fix minor typo in cpumodel_subfuncs | Problem Details:
Specifically, fix spelling of "available" in main function.
Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Link: https://lore.kernel.org/r/20250813154751.5725-1-krishnagopi487@gmail.com
Signed-off-by: Sean Christopherson <seanjc@google.com> | ```diff
diff --git a/tools/testing/selftests/kvm/s390/cpumodel_subfuncs_test.c b/tools/testing/selftests/kvm/s390/cpumodel_subfuncs_test.c
index 27255880dabd..aded795d42be 100644
--- a/tools/testing/selftests/kvm/s390/cpumodel_subfuncs_test.c
+++ b/tools/testing/selftests/kvm/s390/cpumodel_subfuncs_test.c
@@ -291,7 +29... |
453a6d2a68e54a483d67233c6e1e24c4095ee4be | Analyze and fix the following issue in the Linux kernel code: cifs: Fix oops due to uninitialised variable | Problem Details:
Fix smb3_init_transform_rq() to initialise buffer to NULL before calling
netfs_alloc_folioq_buffer() as netfs assumes it can append to the buffer it
is given. Setting it to NULL means it should start a fresh buffer, but the
value is currently undefined.
Fixes: a2906d3316fc ("cifs: Switch crypto buffe... | ```diff
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index 3b251de874ec..94b1d7a395d5 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -4496,7 +4496,7 @@ smb3_init_transform_rq(struct TCP_Server_Info *server, int num_rqst,
for (int i = 1; i < num_rqst; i++) {
struct smb_rqst ... |
fb924b7b8669503582e003dd7b7340ee49029801 | Analyze and fix the following issue in the Linux kernel code: change_mnt_propagation(): calculate propagation source only if we'll need it | Problem Details:
We only need it when mount in question was sending events downstream (then
recepients need to switch to new master) or the mount is being turned into
slave (then we need a new master for it).
That wouldn't be a big deal, except that it causes quite a bit of work
when umount_tree() is taking a large pe... | ```diff
diff --git a/fs/pnode.c b/fs/pnode.c
index 1c789f88b3d2..6f7d02f3fa98 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -111,7 +111,8 @@ void change_mnt_propagation(struct mount *mnt, int type)
return;
}
if (IS_MNT_SHARED(mnt)) {
- m = propagation_source(mnt);
+ if (type == MS_SLAVE || !hlist_empty(&mnt->mnt... |
cffd0441872e7f6b1fce5e78fb1c99187a291330 | Analyze and fix the following issue in the Linux kernel code: use uniform permission checks for all mount propagation changes | Problem Details:
do_change_type() and do_set_group() are operating on different
aspects of the same thing - propagation graph. The latter
asks for mounts involved to be mounted in namespace(s) the caller
has CAP_SYS_ADMIN for. The former is a mess - originally it
didn't even check that mount *is* mounted. That got f... | ```diff
diff --git a/fs/namespace.c b/fs/namespace.c
index 1c97f93d1865..88db58061919 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2859,6 +2859,19 @@ static int graft_tree(struct mount *mnt, struct mount *p, struct mountpoint *mp)
return attach_recursive_mnt(mnt, p, mp);
}
+static int may_change_propagatio... |
da025cdb97a23c1916d8491925b878f3e1de0bca | Analyze and fix the following issue in the Linux kernel code: propagate_umount(): only surviving overmounts should be reparented | Problem Details:
... as the comments in reparent() clearly say. As it is, we reparent
*all* overmounts of the mounts being taken out, including those that
are taken out themselves. It's not only a potentially massive slowdown
(on a pathological setup we might end up with O(N^2) time for N mounts
being kicked out), it... | ```diff
diff --git a/fs/pnode.c b/fs/pnode.c
index 81f7599bdac4..1c789f88b3d2 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -637,10 +637,11 @@ void propagate_umount(struct list_head *set)
}
// now to_umount consists of all acceptable candidates
- // deal with reparenting of remaining overmounts on those
+ // deal w... |
0ddfb62f5d018edcb571a3d8ea30ad5332cf2a69 | Analyze and fix the following issue in the Linux kernel code: fix the softlockups in attach_recursive_mnt() | Problem Details:
In case when we mounting something on top of a large stack of overmounts,
all of them being peers of each other, we get quadratic time by the
depth of overmount stack. Easily fixed by doing commit_tree() before
reparenting the overmount; simplifies commit_tree() as well - it doesn't
need to skip the a... | ```diff
diff --git a/fs/namespace.c b/fs/namespace.c
index ddfd4457d338..1c97f93d1865 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1197,10 +1197,7 @@ static void commit_tree(struct mount *mnt)
if (!mnt_ns_attached(mnt)) {
for (struct mount *m = mnt; m; m = next_mnt(m, mnt))
- if (unlikely(mnt_ns_attach... |
f7f804633c91f0fbf03eefbae39eec2205191a82 | Analyze and fix the following issue in the Linux kernel code: regulator: rt5133: Fix IS_ERR() vs NULL bug in rt5133_validate_vendor_info() | Problem Details:
The "priv->cdata" pointer isn't an error pointer; this should be a NULL
check instead. Otherwise it leads to a NULL pointer dereference in the
caller, rt5133_probe().
Fixes: 714165e1c4b0 ("regulator: rt5133: Add RT5133 PMIC regulator Support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
L... | ```diff
diff --git a/drivers/regulator/rt5133-regulator.c b/drivers/regulator/rt5133-regulator.c
index 39532618e73d..129b1f13c880 100644
--- a/drivers/regulator/rt5133-regulator.c
+++ b/drivers/regulator/rt5133-regulator.c
@@ -510,7 +510,7 @@ static int rt5133_validate_vendor_info(struct rt5133_priv *priv)
break;
... |
11cd7a5c21db020b8001aedcae27bd3fa9e1e901 | Analyze and fix the following issue in the Linux kernel code: regulator: tps65219: regulator: tps65219: Fix error codes in probe() | Problem Details:
There is a copy and paste error and we accidentally use "PTR_ERR(rdev)"
instead of "error". The "rdev" pointer is valid at this point.
Also there is no need to print the error code in the error message
because dev_err_probe() already prints that. So clean up the error
message a bit.
Fixes: 38c9f98d... | ```diff
diff --git a/drivers/regulator/tps65219-regulator.c b/drivers/regulator/tps65219-regulator.c
index 5e67fdc88f49..d77ca486879f 100644
--- a/drivers/regulator/tps65219-regulator.c
+++ b/drivers/regulator/tps65219-regulator.c
@@ -454,9 +454,9 @@ static int tps65219_regulator_probe(struct platform_device *pdev)
... |
a585b87614511e4272305bb5acf406f19f7dcade | Analyze and fix the following issue in the Linux kernel code: KVM: selftests: Fix signedness issue with vCPU mmap size check | Problem Details:
Check that the return value of KVM_GET_VCPU_MMAP_SIZE is non-negative
before comparing with sizeof(kvm_run). If KVM_GET_VCPU_MMAP_SIZE fails,
it will return -1, and `-1 > sizeof(kvm_run)` is true, so the ASSERT
passes.
There are no other locations in tools/testing/selftests/kvm that make
the same mist... | ```diff
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index c3f5142b0a54..40e18034ac23 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -24,7 +24,7 @@ uint32_t guest_random_seed;
struct guest_random_state ... |
a57750909580a4e3f7278ea6c13336677ea46af6 | Analyze and fix the following issue in the Linux kernel code: KVM: x86/mmu: Recover TDP MMU NX huge pages using MMU read lock | Problem Details:
Use MMU read lock to recover TDP MMU NX huge pages. To prevent
concurrent modification of the list of potential huge pages, iterate over
the list under tdp_mmu_pages_lock protection and unaccount the page
before dropping the lock.
Zapping under MMU read lock unblocks vCPUs which are waiting for MMU
r... | ```diff
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index a9aafa88de2b..92ff15969a36 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -7596,17 +7596,43 @@ static unsigned long nx_huge_pages_to_zap(struct kvm *kvm,
return ratio ? DIV_ROUND_UP(pages, ratio) : 0;
}
+static bool kvm... |
658a1c8e0a66d0777e0e37a11ba19f27a81e77f4 | Analyze and fix the following issue in the Linux kernel code: drm/xe: Assign ioctl xe file handler to vm in xe_vm_create | Problem Details:
In several code paths, such as xe_pt_create(), the vm->xef field is used
to determine whether a VM originates from userspace or the kernel.
Previously, this handler was only assigned in xe_vm_create_ioctl(),
after the VM was created by xe_vm_create(). However, xe_vm_create()
triggers page table creati... | ```diff
diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c
index 7d20ac4bb633..84f412fd3c5d 100644
--- a/drivers/gpu/drm/xe/xe_migrate.c
+++ b/drivers/gpu/drm/xe/xe_migrate.c
@@ -408,7 +408,7 @@ struct xe_migrate *xe_migrate_init(struct xe_tile *tile)
/* Special layout, prepared below.. ... |
ff9a09b3e09c7b794b56f2f5858f5ce42ba46cb3 | Analyze and fix the following issue in the Linux kernel code: usb: xhci: fix host not responding after suspend and resume | Problem Details:
Partially revert commit e1db856bd288 ("usb: xhci: remove '0' write to
write-1-to-clear register") because the patch cleared the Interrupt Pending
bit during interrupt enabling and disabling. The Interrupt Pending bit
should only be cleared when the driver has handled the interrupt.
Ideally, all interr... | ```diff
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 0e03691f03bf..742c23826e17 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -309,6 +309,7 @@ int xhci_enable_interrupter(struct xhci_interrupter *ir)
return -EINVAL;
iman = readl(&ir->ir_set->iman);
+ iman &= ~IMAN_... |
2eb03376151bb8585caa23ed2673583107bb5193 | Analyze and fix the following issue in the Linux kernel code: usb: xhci: Fix slot_id resource race conflict | Problem Details:
xHC controller may immediately reuse a slot_id after it's disabled,
giving it to a new enumerating device before the xhci driver freed
all resources related to the disabled device.
In such a scenario, device-A with slot_id equal to 1 is disconnecting
while device-B is enumerating, device-B will fail t... | ```diff
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 92bb84f8132a..b3a59ce1b3f4 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -704,8 +704,7 @@ static int xhci_enter_test_mode(struct xhci_hcd *xhci,
if (!xhci->devs[i])
continue;
- retval = xhci_di... |
730ff06d3f5cc2ce0348414b78c10528b767d4a3 | Analyze and fix the following issue in the Linux kernel code: net: mana: Use page pool fragments for RX buffers instead of full pages to improve memory efficiency. | Problem Details:
This patch enhances RX buffer handling in the mana driver by allocating
pages from a page pool and slicing them into MTU-sized fragments, rather
than dedicating a full page per packet. This approach is especially
beneficial on systems with large base page sizes like 64KB.
Key improvements:
- Proper i... | ```diff
diff --git a/drivers/net/ethernet/microsoft/mana/mana_bpf.c b/drivers/net/ethernet/microsoft/mana/mana_bpf.c
index d30721d4516f..7697c9b52ed3 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_bpf.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_bpf.c
@@ -174,6 +174,7 @@ static int mana_xdp_set(struct net_de... |
7d523255f524c95208cefef4edaed149615ff96c | Analyze and fix the following issue in the Linux kernel code: xfs: kick off inodegc when failing to reserve zoned blocks | Problem Details:
XFS processes truncating unlinked inodes asynchronously and thus the free
space pool only sees them with a delay. The non-zoned write path thus
calls into inodegc to accelerate this processing before failing an
allocation due the lack of free blocks. Do the same for the zoned space
reservation.
Fixe... | ```diff
diff --git a/fs/xfs/xfs_zone_space_resv.c b/fs/xfs/xfs_zone_space_resv.c
index 1313c55b8cbe..9cd38716fd25 100644
--- a/fs/xfs/xfs_zone_space_resv.c
+++ b/fs/xfs/xfs_zone_space_resv.c
@@ -10,6 +10,7 @@
#include "xfs_mount.h"
#include "xfs_inode.h"
#include "xfs_rtbitmap.h"
+#include "xfs_icache.h"
#include "... |
d004d70d6cdf03928da0d05c8c15c2ccc15657cd | Analyze and fix the following issue in the Linux kernel code: xfs: remove xfs_last_used_zone | Problem Details:
This was my first attempt at caching the last used zone. But it turns out
for O_DIRECT or RWF_DONTCACHE that operate concurrently or in very short
sequence, the bmap btree does not record a written extent yet, so it fails.
Because it then still finds the last written zone it can lead to a weird
ping-p... | ```diff
diff --git a/fs/xfs/xfs_zone_alloc.c b/fs/xfs/xfs_zone_alloc.c
index f8bd6d741755..f28214c28ab5 100644
--- a/fs/xfs/xfs_zone_alloc.c
+++ b/fs/xfs/xfs_zone_alloc.c
@@ -374,44 +374,6 @@ xfs_zone_free_blocks(
return 0;
}
-/*
- * Check if the zone containing the data just before the offset we are
- * writing t... |
9c174e4dacee9fb2014a4ffc953d79a5707b77e4 | Analyze and fix the following issue in the Linux kernel code: mmc: host: renesas_sdhi: Fix the actual clock | Problem Details:
Wrong actual clock reported, if the SD clock division ratio is other
than 1:1(bits DIV[7:0] in SD_CLK_CTRL are set to 11111111).
On high speed mode, cat /sys/kernel/debug/mmc1/ios
Without the patch:
clock: 50000000 Hz
actual clock: 200000000 Hz
After the fix:
clock: 50000000 Hz
ac... | ```diff
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index fb8ca03f661d..a41291a28e9b 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -222,7 +222,11 @@ static void renesas_sdhi_set_clock(struct tmio_mmc_host *host,
clk &= ~0... |
c1dd310f1d76b4b13f1854618087af2513140897 | Analyze and fix the following issue in the Linux kernel code: spi: SPISG: Use devm_kcalloc() in aml_spisg_clk_init() | Problem Details:
Replace calls of devm_kzalloc() with devm_kcalloc() in aml_spisg_clk_init()
for safer memory allocation with built-in overflow protection, and replace
sizeof(struct clk_div_table) with sizeof(*tbl) to shorten the line.
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Link: https://patch.msgid.link... | ```diff
diff --git a/drivers/spi/spi-amlogic-spisg.c b/drivers/spi/spi-amlogic-spisg.c
index 2ab8bdf2a676..64244a0bd408 100644
--- a/drivers/spi/spi-amlogic-spisg.c
+++ b/drivers/spi/spi-amlogic-spisg.c
@@ -662,7 +662,7 @@ static int aml_spisg_clk_init(struct spisg_device *spisg, void __iomem *base)
clk_disable_unp... |
0f5787df78799c7c8a7dbd2de5ff15250d8d3a4e | Analyze and fix the following issue in the Linux kernel code: ASoC: qcom: audioreach: fix typos in I2S_INTF_TYPE | Problem Details:
Fix spelling mistakes in I2S_INTF_TYPE defines.
Reported-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250819100151.12... | ```diff
diff --git a/sound/soc/qcom/qdsp6/audioreach.h b/sound/soc/qcom/qdsp6/audioreach.h
index 617bda051cf8..efc918452e2a 100644
--- a/sound/soc/qcom/qdsp6/audioreach.h
+++ b/sound/soc/qcom/qdsp6/audioreach.h
@@ -462,8 +462,8 @@ struct param_id_i2s_intf_cfg {
} __packed;
#define I2S_INTF_TYPE_PRIMARY 0
-#define ... |
a2c1f82618b0b65f1ef615aa9cfdac8122537d69 | Analyze and fix the following issue in the Linux kernel code: signal: Fix memory leak for PIDFD_SELF* sentinels | Problem Details:
Commit f08d0c3a7111 ("pidfd: add PIDFD_SELF* sentinels to refer to own
thread/process") introduced a leak by acquiring a pid reference through
get_task_pid(), which increments pid->count but never drops it with
put_pid().
As a result, kmemleak reports unreferenced pid objects after running
tools/testi... | ```diff
diff --git a/kernel/signal.c b/kernel/signal.c
index e2c928de7d2c..fe9190d84f28 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -4067,6 +4067,7 @@ SYSCALL_DEFINE4(pidfd_send_signal, int, pidfd, int, sig,
{
struct pid *pid;
enum pid_type type;
+ int ret;
/* Enforce flags be set to 0 until we add a... |
c237aa9884f238e1480897463ca034877ca7530b | Analyze and fix the following issue in the Linux kernel code: kernfs: don't fail listing extended attributes | Problem Details:
Userspace doesn't expect a failure to list extended attributes:
$ ls -lA /sys/
ls: /sys/: No data available
ls: /sys/kernel: No data available
ls: /sys/power: No data available
ls: /sys/class: No data available
ls: /sys/devices: No data available
ls: /sys/dev: No data available
ls: /sy... | ```diff
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index 3c293a5a21b1..457f91c412d4 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -142,9 +142,9 @@ ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size)
struct kernfs_node *kn = kernfs_dentry_node(dentry);
struct kernfs_iattrs... |
589c12edcd8a7b3b24f407b58443bab3560125e4 | Analyze and fix the following issue in the Linux kernel code: coredump: Fix return value in coredump_parse() | Problem Details:
The coredump_parse() function is bool type. It should return true on
success and false on failure. The cn_printf() returns zero on success
or negative error codes. This mismatch means that when "return err;"
here, it is treated as success instead of failure. Change it to return
false instead.
Fixe... | ```diff
diff --git a/fs/coredump.c b/fs/coredump.c
index fedbead956ed..5dce257c67fc 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -345,7 +345,7 @@ static bool coredump_parse(struct core_name *cn, struct coredump_params *cprm,
was_space = false;
err = cn_printf(cn, "%c", '\0');
if (err)
- return e... |
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