id stringlengths 40 40 | instruction stringlengths 68 308 | input stringlengths 17 33.4k | output stringlengths 100 30k |
|---|---|---|---|
454bbe5913b2c56a3b4c5bf85138b5382ba8b8e6 | Analyze and fix the following issue in the Linux kernel code: net: stmmac: fix PTP error cleanup in __stmmac_open() | Problem Details:
The cleanup function for stmmac_setup_ptp() is stmmac_release_ptp()
which entirely undoes the effects of stmmac_setup_ptp() by
unregistering the PTP device and then stopping the PTP clock,
whereas stmmac_hw_teardown() will only stop the PTP clock while
leaving the PTP device registered.
This can lead ... | ```diff
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5d76cf7957ab..167405aac5b8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4032,7 +4032,7 @@ irq_error:
for (chan ... |
66048f8b3cc7e462953c04285183cdee43a1cb89 | Analyze and fix the following issue in the Linux kernel code: net/cls_cgroup: Fix task_get_classid() during qdisc run | Problem Details:
During recent testing with the netem qdisc to inject delays into TCP
traffic, we observed that our CLS BPF program failed to function correctly
due to incorrect classid retrieval from task_get_classid(). The issue
manifests in the following call stack:
bpf_get_cgroup_classid+5
cls_bpf_... | ```diff
diff --git a/include/net/cls_cgroup.h b/include/net/cls_cgroup.h
index 7e78e7d6f015..668aeee9b3f6 100644
--- a/include/net/cls_cgroup.h
+++ b/include/net/cls_cgroup.h
@@ -63,7 +63,7 @@ static inline u32 task_get_classid(const struct sk_buff *skb)
* calls by looking at the number of nested bh disable calls be... |
bd1ce7ef6aef4ee7349eb3124166e712693650ce | Analyze and fix the following issue in the Linux kernel code: arm64: dts: allwinner: t527: orangepi-4a: hook up external 32k crystal | Problem Details:
When the board was added, its external 32.768 KHz crystal was described
but not hooked up correctly. This meant the device had to fall back to
the SoC's internal oscillator or divide a 32 KHz clock from the main
oscillator, neither of which are accurate for the RTC. As a result the
RTC clock will drift... | ```diff
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
index d07bb9193b43..b5483bd7b8d5 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-orangepi-4a.dts
@@ -346,6 +34... |
3d5e1ba00af8dd34ae1e573c2c07e00b5ec65267 | Analyze and fix the following issue in the Linux kernel code: arm64: dts: allwinner: t527: avaota-a1: hook up external 32k crystal | Problem Details:
When the board was added, its external 32.768 KHz crystal was described
but not hooked up correctly. This meant the device had to fall back to
the SoC's internal oscillator or divide a 32 KHz clock from the main
oscillator, neither of which are accurate for the RTC. As a result the
RTC clock will drift... | ```diff
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
index e7713678208d..4e71055fbd15 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-t527-avaota-a1.dts
@@ -309,6 +309,14 @@
... |
9f01e1e14e71defefcb4d6823b8476a15f3cf04a | Analyze and fix the following issue in the Linux kernel code: arm64: dts: allwinner: a527: cubie-a5e: Drop external 32.768 KHz crystal | Problem Details:
The Radxa Cubie A5E has empty pads for a 32.768 KHz crystal, but it is
left unpopulated, as per the schematics and seen on board images. A dead
give away is the RTC's LOSC auto switch register showing the external
OSC to be abnormal.
Drop the external crystal from the device tree. It was not reference... | ```diff
diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts b/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts
index d4cee2222104..514c221a7a86 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a527-cubie-a5e.dts
@@ -21,13 +21,6 @@
... |
be5ae730ffa6fd774a00a4705c1e11e078b08ca1 | Analyze and fix the following issue in the Linux kernel code: usb: typec: tipd: Clear interrupts first | Problem Details:
Right now the interrupt handler first reads all updated status registers
and only then clears the interrupts. It's possible that a duplicate
interrupt for a changed register or plug state comes in after the
interrupts have been processed but before they have been cleared:
* plug is inserted, TPS_REG_I... | ```diff
diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index dcf141ada078..1c80296c3b27 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -545,24 +545,23 @@ static irqreturn_t cd321x_interrupt(int irq, void *data)
if (!event)
goto err_unlock;
+ tps6598x... |
ec8f26092e525ee3cb1a56d455109fd40bfff3ef | Analyze and fix the following issue in the Linux kernel code: ALSA: hda/realtek: Add ALC295 Dell TAS2781 I2C fixup | Problem Details:
This patch adds a new fixup for the ALC295 codec on some Dell
laptops that use the TAS2781 I2C amplifier.
The fixup correctly initializes the amplifier and pins, allowing
sound to work on all speakers of these devices.
The fixup chain is added to the relevant quirk entries for
Dell Polaris models.
[... | ```diff
diff --git a/sound/hda/codecs/realtek/alc269.c b/sound/hda/codecs/realtek/alc269.c
index 85bb8c4d3b17..59cc01079fee 100644
--- a/sound/hda/codecs/realtek/alc269.c
+++ b/sound/hda/codecs/realtek/alc269.c
@@ -3702,6 +3702,7 @@ enum {
ALC236_FIXUP_DELL_DUAL_CODECS,
ALC287_FIXUP_CS35L41_I2C_2_THINKPAD_ACPI,
A... |
48633acccf38d706d7b368400647bb9db9caf1ae | Analyze and fix the following issue in the Linux kernel code: Input: cros_ec_keyb - Defer probe until parent EC device is registered | Problem Details:
The `cros_ec_keyb` driver can be probed before the cros_ec_device has
completed the registration. This creates a race condition where
`cros_ec_keyb` might access uninitialized data.
Fix this by calling `cros_ec_device_registered()` to check the parent's
status. If the device is not yet ready, return... | ```diff
diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
index c1e53d87c8a7..f7209c8ebbcc 100644
--- a/drivers/input/keyboard/cros_ec_keyb.c
+++ b/drivers/input/keyboard/cros_ec_keyb.c
@@ -705,6 +705,12 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
ec = dev_g... |
56cb557279d70397cefb497e0f06bdd6fd685f8e | Analyze and fix the following issue in the Linux kernel code: platform/chrome: cros_ec: Add a flag to track registration state | Problem Details:
Introduce a `registered` flag to the `struct cros_ec_device` to allow
callers to determine if the device has been fully registered and is
ready for use.
This is a preparatory step to prevent race conditions where other drivers
might try to access the device before it is fully registered or after
it ha... | ```diff
diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
index 61bcef8741db..1da79e3d215b 100644
--- a/drivers/platform/chrome/cros_ec.c
+++ b/drivers/platform/chrome/cros_ec.c
@@ -9,6 +9,7 @@
* battery charging and regulator control, firmware update.
*/
+#include <linux/cleanup.... |
d6d5116391857fc78fad9aa42317b36e4ce17b58 | Analyze and fix the following issue in the Linux kernel code: kexec: introduce is_kho_boot() | Problem Details:
Patch series "efi: Fix EFI boot with kexec handover (KHO)", v3.
This patch series fixes a kernel panic that occurs when booting with both
EFI and KHO (Kexec HandOver) enabled.
The issue arises because EFI's `reserve_regions()` clears all memory
regions with `memblock_remove(0, PHYS_ADDR_MAX)` before ... | ```diff
diff --git a/include/linux/kexec_handover.h b/include/linux/kexec_handover.h
index 348844cffb13..559d13a3bc44 100644
--- a/include/linux/kexec_handover.h
+++ b/include/linux/kexec_handover.h
@@ -40,6 +40,7 @@ struct kho_serialization;
#ifdef CONFIG_KEXEC_HANDOVER
bool kho_is_enabled(void);
+bool is_kho_boot... |
913e65a2fe1a16fa253c4a016e2306b2cf9ffef8 | Analyze and fix the following issue in the Linux kernel code: crash: add KUnit tests for crash_exclude_mem_range | Problem Details:
crash_exclude_mem_range seems to be a simple function but there have been
multiple attempts to fix it,
- commit a2e9a95d2190 ("kexec: Improve & fix crash_exclude_mem_range()
to handle overlapping ranges")
- commit 6dff31597264 ("crash_core: fix and simplify the logic of
crash_exclude_mem_range(... | ```diff
diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec
index 1224dd937df0..422270d64820 100644
--- a/kernel/Kconfig.kexec
+++ b/kernel/Kconfig.kexec
@@ -148,6 +148,17 @@ config CRASH_DM_CRYPT_CONFIGS
CRASH_DM_CRYPT cannot directly select CONFIGFS_FS, because that
is required to be built-in.
+config ... |
d337f4524861f4e74c31ee575d60f2eaa1e82388 | Analyze and fix the following issue in the Linux kernel code: x86/kexec: fix potential cmem->ranges out of memory | Problem Details:
In memmap_exclude_ranges(), elfheader will be excluded from crashk_res.
In the current x86 architecture code, the elfheader is always allocated at
crashk_res.start. It seems that there won't be a new split range. But it
depends on the allocation position of elfheader in crashk_res. To avoid
potenti... | ```diff
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 60bb24ddd36f..335fd2ee9766 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -165,8 +165,18 @@ static struct crash_mem *fill_up_crash_elf_data(void)
/*
* Exclusion of crash region, crashk_low_res and/or crashk_cma_rang... |
13f23538ef49a96a1b8ba9d61bd778de65f00613 | Analyze and fix the following issue in the Linux kernel code: fs/proc/base.c: fix the wrong format specifier | Problem Details:
Use '%d' instead of '%u' for int.
Link: https://lkml.kernel.org/r/20250903083948.2536-1-zhangjiao2@cmss.chinamobile.com
Signed-off-by: zhang jiao <zhangjiao2@cmss.chinamobile.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.... | ```diff
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 62d35631ba8c..569c93c9f927 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -3945,7 +3945,7 @@ static int proc_task_readdir(struct file *file, struct dir_context *ctx)
tid = task_pid_nr_ns(task, ns);
if (!tid)
continue; /* The task has just exited.... |
fe7a283b39160153b6d1bd7f61b0a9d5d44987a8 | Analyze and fix the following issue in the Linux kernel code: ocfs2: add suballoc slot check in ocfs2_validate_inode_block() | Problem Details:
In 'ocfs2_validate_inode_block()', add suballoc slot check similar to one
in 'ocfs2_get_suballoc_slot_bit()', thus preventing an out-of-bounds
accesses for 'local_system_inodes' in 'get_local_system_inode()'.
Most likely this fixes
https://syzkaller.appspot.com/bug?extid=a77d690840e60bc2ddd8 as well.
... | ```diff
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 6c4f78f473fb..fcc89856ab95 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -1495,6 +1495,14 @@ int ocfs2_validate_inode_block(struct super_block *sb,
goto bail;
}
+ if (le16_to_cpu(di->i_suballoc_slot) != (u16)OCFS2_INVALID_SLOT &&
+ (u32... |
17bdc64c0d419b78bb400c221d36eaa391d16b3a | Analyze and fix the following issue in the Linux kernel code: selftests: proc: mark vsyscall strings maybe-unused | Problem Details:
The str_vsyscall_* constants in proc-pid-vm.c triggers
-Wunused-const-variable warnings with gcc-13.32 and clang 18.1.
Define and apply __maybe_unused locally to suppress the warnings. No
functional change
Fixes compiler warning:
warning: `str_vsyscall_*' defined but not used[-Wunused-const-variable... | ```diff
diff --git a/tools/testing/selftests/proc/proc-pid-vm.c b/tools/testing/selftests/proc/proc-pid-vm.c
index d04685771952..978cbcb3eb11 100644
--- a/tools/testing/selftests/proc/proc-pid-vm.c
+++ b/tools/testing/selftests/proc/proc-pid-vm.c
@@ -47,6 +47,10 @@
#include <sys/resource.h>
#include <linux/fs.h>
+#... |
3d5f4f15b778d6da9760d54455cc256ecf924c0a | Analyze and fix the following issue in the Linux kernel code: watchdog: skip checks when panic is in progress | Problem Details:
This issue was found when an EFI pstore was configured for kdump logging
with the NMI hard lockup detector enabled. The efi-pstore write operation
was slow, and with a large number of logs, the pstore dump callback within
kmsg_dump() took a long time.
This delay triggered the NMI watchdog, leading to... | ```diff
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 5413aa85e8a4..5b62d1002783 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -752,6 +752,12 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer)
if (!watchdog_enabled)
return HRTIMER_NORESTART;
+ /*
+ * pass the buddy ... |
d0d9c7235548f1d772f1e48c9d5742c65d81c705 | Analyze and fix the following issue in the Linux kernel code: panic: introduce helper functions for panic state | Problem Details:
Patch series "panic: introduce panic status function family", v2.
This series introduces a family of helper functions to manage panic state
and updates existing code to use them.
Before this series, panic state helpers were scattered and inconsistent.
For example, panic_in_progress() was defined in ... | ```diff
diff --git a/include/linux/panic.h b/include/linux/panic.h
index 7be742628c25..6f972a66c13e 100644
--- a/include/linux/panic.h
+++ b/include/linux/panic.h
@@ -43,6 +43,12 @@ void abort(void);
extern atomic_t panic_cpu;
#define PANIC_CPU_INVALID -1
+bool panic_try_start(void);
+void panic_reset(void);
+bool ... |
493977de1469b9898e178c9aab5fd498c4083da7 | Analyze and fix the following issue in the Linux kernel code: ocfs2: fix super block reserved field offset comment | Problem Details:
The offset annotation for s_reserved2 in struct ocfs2_super_block
was incorrect. After the preceding fields:
- s_xattr_inline_size (2 bytes at 0xB8)
- s_reserved0 (2 bytes at 0xBA)
- s_dx_seed[3] (12 bytes at 0xBC)
The actual offset of s_reserved2 is at 0xC8, when calculating from the
start of the str... | ```diff
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index e8e94599e907..ae0e44e5f2ad 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -614,7 +614,7 @@ struct ocfs2_super_block {
__le16 s_reserved0;
__le32 s_dx_seed[3]; /* seed[0-2] for dx dir hash.
* s_uuid_hash serves as seed[3]. */... |
95f091274f3db39493e8b5c44671b9f1e02c0c25 | Analyze and fix the following issue in the Linux kernel code: watchdog/softlockup: fix incorrect CPU utilization output during softlockup | Problem Details:
Since we use 16-bit precision, the raw data will undergo integer division,
which may sometimes result in data loss. This can lead to slightly
inaccurate CPU utilization calculations. Under normal circumstances, this
isn't an issue. However, when CPU utilization reaches 100%, the
calculated result mi... | ```diff
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 9c7134f7d2c4..5413aa85e8a4 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -425,7 +425,11 @@ static DEFINE_PER_CPU(u8, cpustat_tail);
*/
static u16 get_16bit_precision(u64 data_ns)
{
- return data_ns >> 24LL; /* 2^24ns ~= 16.8ms */
+ /*
+ *... |
41f88ddfd453fe894678e1f6909b9fb9e08e8c3d | Analyze and fix the following issue in the Linux kernel code: watchdog/softlockup: fix wrong output when watchdog_thresh < 3 | Problem Details:
When watchdog_thresh is below 3, sample_period will be less than 1 second.
So the following output will print when softlockup:
CPU#3 Utilization every 0s during lockup
Fix this by changing time unit from seconds to milliseconds.
Link: https://lkml.kernel.org/r/20250812074132.27810-1-yaozhenguo@jd.co... | ```diff
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 80b56c002c7f..9c7134f7d2c4 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -455,17 +455,17 @@ static void print_cpustat(void)
{
int i, group;
u8 tail = __this_cpu_read(cpustat_tail);
- u64 sample_period_second = sample_period;
+ u64 sample_... |
bc107a619f029415e0a87e6df16f995553da4568 | Analyze and fix the following issue in the Linux kernel code: squashfs: verify inode mode when loading from disk | Problem Details:
The inode mode loaded from corrupted disk might by error contain the file
type bits. Since the file type bits are set by squashfs_read_inode()
using bitwise OR, the file type bits must not be set by
squashfs_new_inode() from squashfs_read_inode(); otherwise, an invalid
file type bits later confuses ma... | ```diff
diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c
index d5918eba27e3..dee8fa016930 100644
--- a/fs/squashfs/inode.c
+++ b/fs/squashfs/inode.c
@@ -68,6 +68,10 @@ static int squashfs_new_inode(struct super_block *sb, struct inode *inode,
inode->i_mode = le16_to_cpu(sqsh_ino->mode);
inode->i_size = 0;
+... |
a6cf527e66b8ea7b3119a354a873ebfa57ea225e | Analyze and fix the following issue in the Linux kernel code: checkpatch: allow http links of any length in commit logs | Problem Details:
Dave Gilbert noticed that checkpatch warns about URL links over 75 chars
in length in commit logs.
Fix that.
Link: https://lkml.kernel.org/r/3529faaf84a5a9a96c5c0ec4183ae0ba6e97673c.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Dave Gilbert <linux@treblig.org>
Signed-off-by: Andr... | ```diff
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e722dd6fa8ef..319cc5f85885 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3294,7 +3294,7 @@ sub process {
# file delta changes
$line =~ /^\s*(?:[\w\.\-\+]*\/)++[\w\.\-\+]+:/ ||
# filename then :
- $l... |
103e90626d3a4032d22e8b09ff14600e71cda59c | Analyze and fix the following issue in the Linux kernel code: maple_tree: testing fix for spanning store on 32b | Problem Details:
32 bit nodes have a larger branching factor. This affects the required
value to cause a height change. Update the spanning store height test to
work for both 64 and 32 bit nodes.
Link: https://lkml.kernel.org/r/20250828003023.418966-3-Liam.Howlett@oracle.com
Fixes: f9d3a963fef4 ("maple_tree: use hei... | ```diff
diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
index 90a0db45a33c..05714c22994e 100644
--- a/tools/testing/radix-tree/maple.c
+++ b/tools/testing/radix-tree/maple.c
@@ -36327,13 +36327,18 @@ extern void test_kmem_cache_bulk(void);
static inline void check_spanning_store_height... |
82b5fe3059a52e1419521ac32703208d03bb15e9 | Analyze and fix the following issue in the Linux kernel code: maple_tree: fix testing for 32 bit builds | Problem Details:
Patch series "maple_tree: Fix testing for 32bit compiles".
The maple tree test suite supports 32bit builds which causes 32bit nodes
and index/last values. Some tests have too large values and must be
skipped while others depend on certain actions causing the tree to be
altered in another measurable w... | ```diff
diff --git a/tools/testing/radix-tree/maple.c b/tools/testing/radix-tree/maple.c
index 172700fb7784..90a0db45a33c 100644
--- a/tools/testing/radix-tree/maple.c
+++ b/tools/testing/radix-tree/maple.c
@@ -36428,6 +36428,7 @@ static void check_nomem_writer_race(struct maple_tree *mt)
*/
static inline int check... |
b55102826d7d3d41a5777931689c746207308c95 | Analyze and fix the following issue in the Linux kernel code: btrfs: set AS_KERNEL_FILE on the btree_inode | Problem Details:
extent_buffers are global and shared so their pages should not belong to
any particular cgroup (currently whichever cgroups happens to allocate the
extent_buffer).
Btrfs tree operations should not arbitrarily block on cgroup reclaim or
have the shared extent_buffer pages on a cgroup's reclaim lists.
... | ```diff
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 70fc4e7cc5a0..7fab5057cf8e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1930,6 +1930,7 @@ static int btrfs_init_btree_inode(struct super_block *sb)
BTRFS_I(inode)->root = btrfs_grab_root(fs_info->tree_root);
set_bit(BTRFS_INODE_DUMMY... |
e3a9ac4e866ea746475b4026819a8c08ec1142e6 | Analyze and fix the following issue in the Linux kernel code: mm: add vmstat for kernel_file pages | Problem Details:
Kernel file pages are tricky to track because they are indistinguishable
from files whose usage is accounted to the root cgroup.
To maintain good accounting, introduce a vmstat counter tracking kernel
file pages.
Confirmed that these work as expected at a high level by mounting a btrfs
using AS_KERNE... | ```diff
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index fe13ad175fed..f3272ef5131b 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -259,6 +259,7 @@ enum node_stat_item {
NR_HUGETLB,
#endif
NR_BALLOON_PAGES,
+ NR_KERNEL_FILE_PAGES,
NR_VM_NODE_STAT_ITEMS
};
diff --git a/mm... |
cf1dec76ba8a00b20e51d205f3c9f5c45bc96df2 | Analyze and fix the following issue in the Linux kernel code: mm/filemap: add AS_KERNEL_FILE | Problem Details:
Patch series "introduce kernel file mapped folios", v4.
Btrfs currently tracks its metadata pages in the page cache, using a fake
inode (fs_info->btree_inode) with offsets corresponding to where the
metadata is stored in the filesystem's full logical address space.
A consequence of this is that when ... | ```diff
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 9fa3afc90dd5..e693978b2022 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1059,6 +1059,8 @@ extern int mem_cgroup_init(void);
#define MEM_CGROUP_ID_SHIFT 0
+#define root_mem_cgroup (NULL)
+
static inl... |
1580cd50b6d40af81fe48611ef7a60545eb8d40b | Analyze and fix the following issue in the Linux kernel code: selftests/mm/uffd-stress: stricten constraint on free hugepages needed before the test | Problem Details:
The test requires at least 2 * (bytes/page_size) hugetlb memory, since we
require identical number of hugepages for src and dst location. Fix this.
Along with the above, as explained in patch "selftests/mm/uffd-stress:
Make test operate on less hugetlb memory", the racy nature of the test
requires th... | ```diff
diff --git a/tools/testing/selftests/mm/uffd-stress.c b/tools/testing/selftests/mm/uffd-stress.c
index c0f64df5085c..ecd016329935 100644
--- a/tools/testing/selftests/mm/uffd-stress.c
+++ b/tools/testing/selftests/mm/uffd-stress.c
@@ -448,12 +448,6 @@ int main(int argc, char **argv)
parse_test_type_arg(argv[1... |
060b6c72ce94ebd1190842e81eb9675d7400c5f6 | Analyze and fix the following issue in the Linux kernel code: selftests/mm/uffd-stress: make test operate on less hugetlb memory | Problem Details:
Patch series "selftests/mm: uffd-stress fixes", v2.
This patchset ensures that the number of hugepages is correctly set in the
system so that the uffd-stress test does not fail due to the racy nature
of the test. Patch 1 changes the hugepage constraint in the
run_vmtests.sh script, whereas patch 2 ch... | ```diff
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 514fab5a20ef..2c06557ee95d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -6932,6 +6932,11 @@ int hugetlb_mfill_atomic_pte(pte_t *dst_pte,
folio = alloc_hugetlb_folio(dst_vma, dst_addr, false);
if (IS_ERR(folio)) {
+ pte_t *actual_pte = hugetlb_walk(dst_... |
ef49b7b39d50b9e4f9d63e64f5d8acafe3c71158 | Analyze and fix the following issue in the Linux kernel code: maple_tree: fix MAPLE_PARENT_RANGE32 and parent pointer docs | Problem Details:
MAPLE_PARENT_RANGE32 should be 0x02 as a 32 bit node is indicated by the
bit pattern 0b010 which is the hex value 0x02. There are no users
currently, so there is no associated bug with this wrong value.
Fix typo Note -> Node and replace x with b to indicate binary values.
Link: https://lkml.kernel.o... | ```diff
diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index bafe143b1f78..41e633264e51 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -57,17 +57,17 @@
* MT_FLAGS_ALLOC_RANGE flag.
*
* Node types:
- * 0x??1 = Root
- * 0x?00 = 16 bit nodes
- * 0x010 = 32 bi... |
79dfed097680084f3d4716fa2c5bc945233bd2c0 | Analyze and fix the following issue in the Linux kernel code: selftests/mm: use calloc instead of malloc in pagemap_ioctl.c | Problem Details:
As per Documentation/process/deprecated.rst, dynamic size calculations
should not be performed in memory allocator arguments due to possible
overflows.
Replace malloc with calloc to avoid open-ended arithmetic and prevent
possible overflows.
Link: https://lkml.kernel.org/r/20250825170643.63174-1-visw... | ```diff
diff --git a/tools/testing/selftests/mm/pagemap_ioctl.c b/tools/testing/selftests/mm/pagemap_ioctl.c
index e6face7c0166..4fc8e578ec7c 100644
--- a/tools/testing/selftests/mm/pagemap_ioctl.c
+++ b/tools/testing/selftests/mm/pagemap_ioctl.c
@@ -209,7 +209,7 @@ int userfaultfd_tests(void)
wp_addr_range(mem, mem_... |
786eb990cfb78aab94eb74fb32a030e14723a620 | Analyze and fix the following issue in the Linux kernel code: drivers/base/node: handle error properly in register_one_node() | Problem Details:
If register_node() returns an error, it is not handled correctly.
The function will proceed further and try to register CPUs under the
node, which is not correct.
So, in this patch, if register_node() returns an error, we return
immediately from the function.
Link: https://lkml.kernel.org/r/202508220... | ```diff
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 3399594136b2..45d512939c40 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -885,6 +885,11 @@ int register_one_node(int nid)
node_devices[nid] = node;
error = register_node(node_devices[nid], nid);
+ if (error) {
+ node_devices[nid... |
a7498388b099f08219bad5f19d00e436da27fbf9 | Analyze and fix the following issue in the Linux kernel code: selftests: centralise maybe-unused definition in kselftest.h | Problem Details:
Several selftests subdirectories duplicated the define __maybe_unused,
leading to redundant code. Move to kselftest.h header and remove other
definitions.
This addresses the duplication noted in the proc-pid-vm warning fix
Link: https://lkml.kernel.org/r/20250821101159.2238-1-reddybalavignesh9979@gm... | ```diff
diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
index c3b6d2604b1e..661d31c4b558 100644
--- a/tools/testing/selftests/kselftest.h
+++ b/tools/testing/selftests/kselftest.h
@@ -92,6 +92,10 @@
#endif
#define __printf(a, b) __attribute__((format(printf, a, b)))
+#ifndef... |
940b1be22578dc67a0aa78338177b97b9a13eb8b | Analyze and fix the following issue in the Linux kernel code: kselftest: mm: fix typos in test_vmalloc.sh | Problem Details:
Fix simple typos in function name and console message.
Link: https://lkml.kernel.org/r/20250823170208.184149-1-allyheev@gmail.com
Signed-off-by: ally heev <allyheev@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation... | ```diff
diff --git a/tools/testing/selftests/mm/test_vmalloc.sh b/tools/testing/selftests/mm/test_vmalloc.sh
index d73b846736f1..d39096723fca 100755
--- a/tools/testing/selftests/mm/test_vmalloc.sh
+++ b/tools/testing/selftests/mm/test_vmalloc.sh
@@ -47,14 +47,14 @@ check_test_requirements()
fi
}
-run_perfformance... |
658fa653b4d17715c6b4c3686dabbfee6eb15e51 | Analyze and fix the following issue in the Linux kernel code: mm, x86/mm: move creating the tlb_flush event back to x86 code | Problem Details:
Commit e73ad5ff2f76 ("mm, x86/mm: Make the batched unmap TLB flush API
more generic") moved the trace_tlb_flush out of mm/rmap.c and back into
x86 specific architecture, but it kept the include to the events/tlb.h
file, even though it didn't use that event.
Then another commit came in and added more e... | ```diff
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index bb57e93b4caf..8bf6ad4b9400 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -34,6 +34,7 @@
* We need to define the tracepoints somewhere, and tlb.c
* is only compiled when SMP=y.
*/
+#define CREATE_TRACE_POINTS
#include <trace/events/t... |
63ec0c26b682ca235953490dfa82b8fa4d4ab4a0 | Analyze and fix the following issue in the Linux kernel code: tmpfs: preserve SB_I_VERSION on remount | Problem Details:
Now tmpfs enables i_version by default and tmpfs does not modify it. But
SB_I_VERSION can also be modified via sb_flags, and reconfigure_super()
always overwrites the existing flags with the latest ones. This means
that if tmpfs is remounted without specifying iversion, the default
i_version will be ... | ```diff
diff --git a/mm/shmem.c b/mm/shmem.c
index d945de3a7f0e..13cc51df3893 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -5081,7 +5081,7 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
sb->s_flags |= SB_NOUSER;
}
sb->s_export_op = &shmem_export_ops;
- sb->s_flags |= SB_NOSEC | SB_I... |
9eff16bd3a4b97b3e13337eddaa12abe6e0b2a78 | Analyze and fix the following issue in the Linux kernel code: mm/huge_memory: add new_order and offset to split_huge_pages*() pr_debug | Problem Details:
Patch series "Better split_huge_page_test result check", v5.
This patchset uses kpageflags to get after-split folio orders for a better
split_huge_page_test result check[1]. The added
gather_after_split_folio_orders() scans through a VPN range and collects
the numbers of folios at different orders.
... | ```diff
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index aac5f0a2cb54..2a47cd3bb649 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -4320,8 +4320,8 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start,
goto out;
}
- pr_debug("Split huge pages in pid: %d, vaddr: [0x%lx - 0x%lx]\n",
... |
4bd22a7ae5742df90abfdc0931a0f1bded65c1de | Analyze and fix the following issue in the Linux kernel code: mm: fix duplicate accounting of free pages in should_reclaim_retry() | Problem Details:
In the zone_reclaimable_pages() function, if the page counts for
NR_ZONE_INACTIVE_FILE, NR_ZONE_ACTIVE_FILE, NR_ZONE_INACTIVE_ANON, and
NR_ZONE_ACTIVE_ANON are all zero, the function returns the number of free
pages as the result.
In this case, when should_reclaim_retry() calculates reclaimable pages,... | ```diff
diff --git a/mm/vmscan.c b/mm/vmscan.c
index e336577c4454..c88eb223ade2 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -398,14 +398,7 @@ unsigned long zone_reclaimable_pages(struct zone *zone)
if (can_reclaim_anon_pages(NULL, zone_to_nid(zone), NULL))
nr += zone_page_state_snapshot(zone, NR_ZONE_INACTIVE_AN... |
4e915656a38afe8aeebb283493f49c22d675a9fc | Analyze and fix the following issue in the Linux kernel code: mm/damon/Kconfig: make DAMON_STAT_ENABLED_DEFAULT depend on DAMON_STAT | Problem Details:
The DAMON_STAT_ENABLED_DEFAULT option is strongly tied to DAMON_STAT
option -- enabling it alone is meaningless. This patch makes
DAMON_STAT_ENABLED_DEFAULT depend on DAMON_STAT, ensuring functional
consistency.
Link: https://lkml.kernel.org/r/20250815092110.811757-1-lienze@kylinos.cn
Fixes: 369c415e... | ```diff
diff --git a/mm/damon/Kconfig b/mm/damon/Kconfig
index b3171f9406c1..8c868f7035fc 100644
--- a/mm/damon/Kconfig
+++ b/mm/damon/Kconfig
@@ -104,7 +104,7 @@ config DAMON_STAT
config DAMON_STAT_ENABLED_DEFAULT
bool "Enable DAMON_STAT by default"
- depends on DAMON_PADDR
+ depends on DAMON_STAT
default DAMON... |
e338d83531540c6cda4bdc8de52aaae186d8a97c | Analyze and fix the following issue in the Linux kernel code: mm: readahead: improve mmap_miss heuristic for concurrent faults | Problem Details:
If two or more threads of an application faulting on the same folio, the
mmap_miss counter can be decreased multiple times. It breaks the
mmap_miss heuristic and keeps the readahead enabled even under extreme
levels of memory pressure.
It happens often if file folios backing a multi-threaded applicat... | ```diff
diff --git a/mm/filemap.c b/mm/filemap.c
index d1fb0b12bff2..1a388b11cfa9 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3323,9 +3323,17 @@ static struct file *do_async_mmap_readahead(struct vm_fault *vmf,
if (vmf->vma->vm_flags & VM_RAND_READ || !ra->ra_pages)
return fpin;
- mmap_miss = READ_ONCE(ra->... |
2d941088f4570f50df8a079b3ca25c392226fb38 | Analyze and fix the following issue in the Linux kernel code: selftests/mm: fix child process exit codes in ksm_functional_tests | Problem Details:
In ksm_functional_tests, test_child_ksm() returned negative values to
indicate errors. However, when passed to exit(), these were interpreted
as large unsigned values (e.g, -2 became 254), leading to incorrect
handling in the parent process. As a result, some tests appeared to be
skipped or silently ... | ```diff
diff --git a/tools/testing/selftests/mm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c
index 996dc6645570..534aa405cac7 100644
--- a/tools/testing/selftests/mm/ksm_functional_tests.c
+++ b/tools/testing/selftests/mm/ksm_functional_tests.c
@@ -512,14 +512,14 @@ static int test_child_k... |
7bc857ddeeaa35a059f6e645365526e10e1f3511 | Analyze and fix the following issue in the Linux kernel code: mm/selftests: fix split_huge_page_test failure on systems with 64KB page size | Problem Details:
The split_huge_page_test fails on systems with a 64KB base page size.
This is because the order of a 2MB huge page is different:
On 64KB systems, the order is 5.
On 4KB systems, it's 9.
The test currently assumes a maximum huge page order of 9, which is only
valid for 4KB base page systems. On sys... | ```diff
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index c744c603d688..b51fbeb93751 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -41,11 +41,6 @@ static size_t hugetlbsizes[10];
static int gup_fd;
static bool has_huge_zeropage;
-static ... |
08c907c5bc0ae8c9f0741c9622366ed30a1f6232 | Analyze and fix the following issue in the Linux kernel code: selftest/mm: fix ksm_funtional_test failures | Problem Details:
This patch fixes 2 issues.
1) After fork() in test_prctl_fork, the child process uses the file
descriptors from the parent process to read ksm_stat and
ksm_merging_pages. This results in incorrect values being read (parent
process ksm_stat and ksm_merging_pages will be read in child), causin... | ```diff
diff --git a/tools/testing/selftests/mm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c
index d8bd1911dfc0..996dc6645570 100644
--- a/tools/testing/selftests/mm/ksm_functional_tests.c
+++ b/tools/testing/selftests/mm/ksm_functional_tests.c
@@ -46,6 +46,8 @@ static int ksm_use_zero_pag... |
eda0bf339b41a948af745e0b17db56037813c04f | Analyze and fix the following issue in the Linux kernel code: mm/selftests: fix incorrect pointer being passed to mark_range() | Problem Details:
Patch series "selftests/mm: Fix false positives and skip unsupported
tests", v4.
This patch series addresses false positives in the generic mm selftests
and skips tests that cannot run correctly due to missing features or
system limitations.
This patch (of 7):
In main(), the high address is stored ... | ```diff
diff --git a/tools/testing/selftests/mm/virtual_address_range.c b/tools/testing/selftests/mm/virtual_address_range.c
index 169dbd692bf5..e24c36a39f22 100644
--- a/tools/testing/selftests/mm/virtual_address_range.c
+++ b/tools/testing/selftests/mm/virtual_address_range.c
@@ -227,7 +227,7 @@ int main(int argc, ch... |
e4fe1388dfbdd9641331071cd9b4a9efa16da34d | Analyze and fix the following issue in the Linux kernel code: mm: fix typos in VMA comments | Problem Details:
Fix the following typos in VMA-related files:
1. "operationr" -> "operation" in mm/vma.h
2. "initialisaing" -> "initializing" in mm/vma_init.c
Link: https://lkml.kernel.org/r/20250814073800.13617-1-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@... | ```diff
diff --git a/mm/vma.h b/mm/vma.h
index b123a9cdedb0..bcdc261c5b15 100644
--- a/mm/vma.h
+++ b/mm/vma.h
@@ -145,7 +145,7 @@ struct vma_merge_struct {
*/
bool __remove_middle :1;
/*
- * Internal flag used during the merge operationr to indicate we will
+ * Internal flag used during the merge operation to... |
0c04015d45e6f102e14bde69b05a0a0591923248 | Analyze and fix the following issue in the Linux kernel code: mm/page_alloc: simplify lowmem_reserve max calculation | Problem Details:
Use max() to find the maximum lowmem_reserve value and min_t() to cap it
to managed_pages in calculate_totalreserve_pages(), instead of open-coding
the comparisons. No functional change.
[liuye@kylinos.cn: fix layout, use min_t]
Link: https://lkml.kernel.org/r/20250815024509.37900-1-ye.liu@linux.de... | ```diff
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 09241bb7663e..fd55ca824c47 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6236,16 +6236,13 @@ static void calculate_totalreserve_pages(void)
unsigned long managed_pages = zone_managed_pages(zone);
/* Find valid and maximum lowmem_reserve in ... |
6a204d4b14c99232e05d35305c27ebce1c009840 | Analyze and fix the following issue in the Linux kernel code: mm/page_alloc: only set ALLOC_HIGHATOMIC for __GPF_HIGH allocations | Problem Details:
Commit 524c48072e56 ("mm/page_alloc: rename ALLOC_HIGH to
ALLOC_MIN_RESERVE") is the start of a series that explains how __GFP_HIGH,
which implies ALLOC_MIN_RESERVE, is going to be used instead of
__GFP_ATOMIC for high atomic reserves.
Commit eb2e2b425c69 ("mm/page_alloc: explicitly record high-order ... | ```diff
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d1d037f97c5f..09241bb7663e 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4408,7 +4408,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask, unsigned int order)
if (!(gfp_mask & __GFP_NOMEMALLOC)) {
alloc_flags |= ALLOC_NON_BLOCK;
- if (order > 0)
+ if... |
668208b161a0b679427e7d0f34c0a65fd7d23979 | Analyze and fix the following issue in the Linux kernel code: riscv: use an atomic xchg in pudp_huge_get_and_clear() | Problem Details:
Make sure we return the right pud value and not a value that could have
been overwritten in between by a different core.
Link: https://lkml.kernel.org/r/20250814-dev-alex-thp_pud_xchg-v1-1-b4704dfae206@rivosinc.com
Fixes: c3cc2a4a3a23 ("riscv: Add support for PUD THP")
Signed-off-by: Alexandre Ghiti <... | ```diff
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 91697fbf1f90..e69346307e78 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -942,6 +942,17 @@ static inline int pudp_test_and_clear_young(struct vm_area_struct *vma,
return ptep_test_a... |
9d246d7410c9c4187e37cc3bfd1284d06b697566 | Analyze and fix the following issue in the Linux kernel code: selftests/damon: fix damon selftests by installing _common.sh | Problem Details:
_common.sh was recently introduced but is not installed and then triggers
an error when trying to run the damon selftests:
selftests: damon: sysfs.sh
./sysfs.sh: line 4: _common.sh: No such file or directory
Install this file to avoid this error.
Link: https://lkml.kernel.org/r/20250812-alex-fixes_m... | ```diff
diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile
index 029de547f31c..2180c328a825 100644
--- a/tools/testing/selftests/damon/Makefile
+++ b/tools/testing/selftests/damon/Makefile
@@ -5,6 +5,7 @@ TEST_GEN_FILES += access_memory access_memory_even
TEST_FILES = _damon... |
0f9ab62a6e44ef51ea3e7f1c552b447cf4eb20ae | Analyze and fix the following issue in the Linux kernel code: mempool: rename struct mempool_s to struct mempool | Problem Details:
Drop the pointless _s prefix and align to the usual struct naming to
prepare for actually using the struct instead of the typedef so that
random headers don't need to include mempool.h for just having a pointer
to the mempool.
Link: https://lkml.kernel.org/r/20250812083105.371295-1-hch@lst.de
Signed-o... | ```diff
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index fe1797bbec42..28ceaeffc0c9 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -199,7 +199,7 @@ struct gendisk {
unsigned int zone_wplugs_hash_bits;
atomic_t nr_zone_wplugs;
spinlock_t zone_wplugs_lock;
- struct mempool_... |
53c225ffa72a63bbca8537a3357c8baec122b9a6 | Analyze and fix the following issue in the Linux kernel code: selftests/mm: fix spelling mistake "mrmeap" -> "mremap" | Problem Details:
There are spelling mistakes in perror messages. Fix these.
Link: https://lkml.kernel.org/r/20250813081333.1978096-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundati... | ```diff
diff --git a/tools/testing/selftests/mm/mremap_test.c b/tools/testing/selftests/mm/mremap_test.c
index 5bd52a951cbd..bf2863b102e3 100644
--- a/tools/testing/selftests/mm/mremap_test.c
+++ b/tools/testing/selftests/mm/mremap_test.c
@@ -846,7 +846,7 @@ static void mremap_move_multi_invalid_vmas(FILE *maps_fp,
}... |
01f86753a05a3b971d69147d6d074c1a8d29b57d | Analyze and fix the following issue in the Linux kernel code: mm: correct sign-extension issue in MMF_* flag masks | Problem Details:
There is an issue with the mask declarations in linux/mm_types.h, which
naively do (1 << bit) operations. Unfortunately this results in the 1
being defaulted as a signed (32-bit) integer.
When the compiler expands the MMF_INIT_MASK bitmask it comes up with:
(((1 << 2) - 1) | (((1 << 9) - 1) << 2) | ... | ```diff
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 9d224075d895..de09ae2a0de6 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -1767,7 +1767,7 @@ enum {
* the modes are SUID_DUMP_* defined in linux/sched/coredump.h
*/
#define MMF_DUMPABLE_BITS 2
-#define MMF_DUMPA... |
4141c2dc88f21881e34e0a3678fa48f0303adc5e | Analyze and fix the following issue in the Linux kernel code: mm: convert arch-specific code to mm_flags_*() accessors | Problem Details:
As part of the effort to move to mm->flags becoming a bitmap field,
convert existing users to making use of the mm_flags_*() accessors which
will, when the conversion is complete, be the only means of accessing
mm_struct flags.
No functional change intended.
[lorenzo.stoakes@oracle.com: fix typo]
L... | ```diff
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 40a526d28184..547104ccc22a 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -182,10 +182,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack)
*/
if (mmap_is_legacy(rlim_stack)) {
mm->mmap_base = mmap_b... |
12e423ba4eaed7b1561b677d32e6599f932d03db | Analyze and fix the following issue in the Linux kernel code: mm: convert core mm to mm_flags_*() accessors | Problem Details:
As part of the effort to move to mm->flags becoming a bitmap field,
convert existing users to making use of the mm_flags_*() accessors which
will, when the conversion is complete, be the only means of accessing
mm_struct flags.
This will result in the debug output being that of a bitmap output, which
... | ```diff
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 14d424830fa8..84b7eebe0d68 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -327,7 +327,7 @@ static inline bool vma_thp_disabled(struct vm_area_struct *vma,
* example, s390 kvm.
*/
return (vm_flags & VM_NOHUGEPAGE)... |
bb6525f2f8c41e89ba3fc506bc1705c68cf845ae | Analyze and fix the following issue in the Linux kernel code: mm: add bitmap mm->flags field | Problem Details:
Patch series "mm: make mm->flags a bitmap and 64-bit on all arches".
We are currently in the bizarre situation where we are constrained on the
number of flags we can set in an mm_struct based on whether this is a
32-bit or 64-bit kernel.
This is because mm->flags is an unsigned long field, which is 3... | ```diff
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3868ca1a25f9..4ed4a0b9dad6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -34,6 +34,8 @@
#include <linux/slab.h>
#include <linux/cacheinfo.h>
#include <linux/rcuwait.h>
+#include <linux/bitmap.h>
+#include <linux/bitops.h>
struct memp... |
801295be015fc53557a6ef221ab74df6950d1b80 | Analyze and fix the following issue in the Linux kernel code: selftest/kho: update generation of initrd | Problem Details:
Use nolibc include directory rather than include a cumulative nolibc.h on
the compiler command line and replace use of 'sudo cpio' with
usr/gen_init_cpio.
While on it fix spelling of KHO_FINALIZE
Link: https://lkml.kernel.org/r/20250811082510.4154080-4-rppt@kernel.org
Signed-off-by: Mike Rapoport (Mi... | ```diff
diff --git a/tools/testing/selftests/kho/init.c b/tools/testing/selftests/kho/init.c
index 8034e24c6bf6..6d9e91d55d68 100644
--- a/tools/testing/selftests/kho/init.c
+++ b/tools/testing/selftests/kho/init.c
@@ -1,22 +1,17 @@
// SPDX-License-Identifier: GPL-2.0
-#ifndef NOLIBC
-#include <errno.h>
#include <s... |
950c31e8f1280c45697e9353e2d4973ff79312bf | Analyze and fix the following issue in the Linux kernel code: lib/test_kho: fixes for error handling | Problem Details:
* Update kho_test_save() so that folios array won't be freed when
returning from the function and the fdt will be freed on error
* Reset state->nr_folios to 0 in kho_test_generate_data() on error
* Simplify allocation of folios info in fdt.
Link: https://lkml.kernel.org/r/20250811082510.4154080-3-r... | ```diff
diff --git a/lib/test_kho.c b/lib/test_kho.c
index c2eb899c3b45..fe8504e3407b 100644
--- a/lib/test_kho.c
+++ b/lib/test_kho.c
@@ -67,13 +67,20 @@ static struct notifier_block kho_test_nb = {
static int kho_test_save_data(struct kho_test_state *state, void *fdt)
{
- phys_addr_t *folios_info __free(kvfree) =... |
be564840bbc2bdd803794a7c1a3b5195a901b0d4 | Analyze and fix the following issue in the Linux kernel code: kho: allow scratch areas with zero size | Problem Details:
Patch series "kho: fixes and cleanups", v3.
These are small KHO and KHO test fixes and cleanups.
This patch (of 3):
Parsing of kho_scratch parameter treats zero size as an invalid value,
although it should be fine for user to request zero sized scratch area for
some types if scratch memory, when fo... | ```diff
diff --git a/kernel/kexec_handover.c b/kernel/kexec_handover.c
index ecd1ac210dbd..1a65419e3756 100644
--- a/kernel/kexec_handover.c
+++ b/kernel/kexec_handover.c
@@ -405,6 +405,7 @@ static int __init kho_parse_scratch_size(char *p)
{
size_t len;
unsigned long sizes[3];
+ size_t total_size = 0;
int i;
... |
ec63a44011dccebca24e7ef7e8a9521306de1bc9 | Analyze and fix the following issue in the Linux kernel code: mm/memory: convert print_bad_pte() to print_bad_page_map() | Problem Details:
print_bad_pte() looks like something that should actually be a WARN or
similar, but historically it apparently has proven to be useful to detect
corruption of page tables even on production systems -- report the issue
and keep the system running to make it easier to actually detect what is
going wrong ... | ```diff
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 4f88e460eb9c..94249e671a7e 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1983,6 +1983,24 @@ enum pgtable_level {
PGTABLE_LEVEL_PGD,
};
+static inline const char *pgtable_level_to_str(enum pgtable_level level)
+{
+... |
b22cc9a9c7ff0ad8998d58fdd7122de6038c46a7 | Analyze and fix the following issue in the Linux kernel code: mm/rmap: convert "enum rmap_level" to "enum pgtable_level" | Problem Details:
Let's factor it out, and convert all checks for unsupported levels to
BUILD_BUG(). The code is written in a way such that force-inlining will
optimize out the levels.
[nathan@kernel.org: always inline __folio_rmap_sanity_checks()]
Link: https://lkml.kernel.org/r/20250814-rmap-fix-build_bug-conversi... | ```diff
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 2b80fd456c8b..4f88e460eb9c 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1975,6 +1975,14 @@ static inline bool arch_has_pfn_modify_check(void)
/* Page-Table Modification Mask */
typedef unsigned int pgtbl_mod_mask;
... |
b0f86aaebed1fc2bdc7475b14675ebc9d542e5d3 | Analyze and fix the following issue in the Linux kernel code: fs/dax: use vmf_insert_folio_pmd() to insert the huge zero folio | Problem Details:
Let's convert to vmf_insert_folio_pmd().
There is a theoretical change in behavior: in the unlikely case there is
already something mapped, we'll now still call trace_dax_pmd_load_hole()
and return VM_FAULT_NOPAGE.
Previously, we would have returned VM_FAULT_FALLBACK, and the caller would
have zapped... | ```diff
diff --git a/fs/dax.c b/fs/dax.c
index 20ecf652c129..89f071ba7b10 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1375,51 +1375,24 @@ static vm_fault_t dax_pmd_load_hole(struct xa_state *xas, struct vm_fault *vmf,
const struct iomap_iter *iter, void **entry)
{
struct address_space *mapping = vmf->vma->vm_file->f... |
1f2052755c152940c336918bd73d13d5468f548b | Analyze and fix the following issue in the Linux kernel code: mm/mincore: use a helper for checking the swap cache | Problem Details:
Introduce a mincore_swap helper for checking swap entries. Move all swap
related logic and sanity debug check into it, and separate them from page
cache checking.
The performance is better after this commit. mincore_page is never called
on a swap cache space now, so the logic can be simpler. The sa... | ```diff
diff --git a/mm/mincore.c b/mm/mincore.c
index 20fd0967d3cb..2f3e1816a30d 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -47,6 +47,48 @@ static int mincore_hugetlb(pte_t *pte, unsigned long hmask, unsigned long addr,
return 0;
}
+static unsigned char mincore_swap(swp_entry_t entry, bool shmem)
+{
+ struct... |
7bca1760cd86b9ef62d4c2baf168b68a708011bd | Analyze and fix the following issue in the Linux kernel code: docs/mm/damon/design: fix typo: s/sz_trtied/sz_tried/ | Problem Details:
There are some typo in statistics section of DAMON design docs
- sz_trtied -> sz_tried
Link: https://lkml.kernel.org/r/20250729144414.31958-1-ekffu200098@gmail.com
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.o... | ```diff
diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index 03f8137256f5..2f6ba5c7f4c7 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -689,7 +689,7 @@ DAMOS accounts below statistics for each scheme, from the beginning of the
scheme's exec... |
e6d7d3502e00ed6f86e03dcdb282cb7785e55448 | Analyze and fix the following issue in the Linux kernel code: mm/damon: update expired description of damos_action | Problem Details:
Nowadays, damos operation actions support a greater operation set. But
comments (also, generated documentation) weren't updated. So fix the
comments with current support status.
Link: https://lkml.kernel.org/r/20250805123940.13691-1-ekffu200098@gmail.com
Signed-off-by: Sang-Heon Jeon <ekffu200098@gm... | ```diff
diff --git a/include/linux/damon.h b/include/linux/damon.h
index f13664c62ddd..d01bfee80bd6 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -110,7 +110,7 @@ struct damon_target {
*
* @DAMOS_WILLNEED: Call ``madvise()`` for the region with MADV_WILLNEED.
* @DAMOS_COLD: Call ``madvise()``... |
d9d1c2d81797250270babcf108d990e3a4799a9d | Analyze and fix the following issue in the Linux kernel code: fs/proc/task_mmu: execute PROCMAP_QUERY ioctl under per-vma locks | Problem Details:
Utilize per-vma locks to stabilize vma after lookup without taking
mmap_lock during PROCMAP_QUERY ioctl execution. If vma lock is
contended, we fall back to mmap_lock but take it only momentarily
to lock the vma and release the mmap_lock. In a very unlikely case
of vm_refcnt overflow, this fall back pa... | ```diff
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index c0968d293b61..e64cf40ce9c4 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -132,6 +132,12 @@ static void release_task_mempolicy(struct proc_maps_private *priv)
#ifdef CONFIG_PER_VMA_LOCK
+static void reset_lock_ctx(struct proc_maps_lock... |
7760b6421b6c1b49550885ecdfa9cf720ead6eed | Analyze and fix the following issue in the Linux kernel code: rust: add support for NUMA ids in allocations | Problem Details:
Add a new type to support specifying NUMA identifiers in Rust allocators
and extend the allocators to have NUMA id as a parameter. Thus, modify
ReallocFunc to use the new extended realloc primitives from the C side of
the kernel (i.e. k[v]realloc_node_align/vrealloc_node_align) and add the
new functi... | ```diff
diff --git a/rust/helpers/slab.c b/rust/helpers/slab.c
index a842bfbddcba..8472370a4338 100644
--- a/rust/helpers/slab.c
+++ b/rust/helpers/slab.c
@@ -3,13 +3,13 @@
#include <linux/slab.h>
void * __must_check __realloc_size(2)
-rust_helper_krealloc(const void *objp, size_t new_size, gfp_t flags)
+rust_helpe... |
7cbce1eaeb783af9e88fc5cebe9b18d46d9030bd | Analyze and fix the following issue in the Linux kernel code: zram: protect recomp_algorithm_show() with ->init_lock | Problem Details:
sysfs handlers should be called under ->init_lock and are not supposed to
unlock it until return, otherwise e.g. a concurrent reset() can occur.
There is one handler that breaks that rule: recomp_algorithm_show().
Move ->init_lock handling outside of __comp_algorithm_show() (also drop it
and call zc... | ```diff
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 8acad3cc6e6e..9ac271b82780 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1225,18 +1225,6 @@ static void comp_algorithm_set(struct zram *zram, u32 prio, const char *alg)
zram->comp_algs[prio] =... |
337135e6124b6d37d7ef1cd5a6c0b9681938c5ee | Analyze and fix the following issue in the Linux kernel code: mm: memory-tiering: fix PGPROMOTE_CANDIDATE counting | Problem Details:
Goto-san reported confusing pgpromote statistics where the
pgpromote_success count significantly exceeded pgpromote_candidate.
On a system with three nodes (nodes 0-1: DRAM 4GB, node 2: NVDIMM 4GB):
# Enable demotion only
echo 1 > /sys/kernel/mm/numa/demotion_enabled
numactl -m 0-1 memhog -r200 350... | ```diff
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 0c5da9141983..9d3ea9085556 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -234,7 +234,21 @@ enum node_stat_item {
#endif
#ifdef CONFIG_NUMA_BALANCING
PGPROMOTE_SUCCESS, /* promote successfully */
- PGPROMOTE_CANDIDATE, /... |
915a4022b591d5476f72a4d2ca688212a0f983a4 | Analyze and fix the following issue in the Linux kernel code: mm/mglru: update MG-LRU proactive reclaim statistics only to memcg | Problem Details:
Users can use /sys/kernel/debug/lru_gen to trigger proactive memory
reclaim of a specified memcg. Currently, statistics such as pgrefill,
pgscan and pgsteal will be updated to the /proc/vmstat system memory
statistics.
This will confuse some system memory pressure monitoring tools, making it
difficul... | ```diff
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a48aec8bfd92..b9a1cfeb2ddf 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -5561,6 +5561,7 @@ static int run_cmd(char cmd, int memcg_id, int nid, unsigned long seq,
if (memcg_id != mem_cgroup_id(memcg))
goto done;
+ sc->target_mem_cgroup = memcg;
lruvec = get_... |
e5eb32468859145806bd72d4d3ce3cb617528f37 | Analyze and fix the following issue in the Linux kernel code: kasan: add test for SLAB_TYPESAFE_BY_RCU quarantine skipping | Problem Details:
Verify that KASAN does not quarantine objects in SLAB_TYPESAFE_BY_RCU
slabs if CONFIG_SLUB_RCU_DEBUG is off.
[jannh@google.com: v2]
Link: https://lkml.kernel.org/r/20250729-kasan-tsbrcu-noquarantine-test-v2-1-d16bd99309c9@google.com
[jannh@google.com: make comment more verbose]
Link: https://lkml... | ```diff
diff --git a/mm/kasan/kasan_test_c.c b/mm/kasan/kasan_test_c.c
index f4b17984b627..4cf2b5f8d6c1 100644
--- a/mm/kasan/kasan_test_c.c
+++ b/mm/kasan/kasan_test_c.c
@@ -1073,6 +1073,45 @@ static void kmem_cache_rcu_uaf(struct kunit *test)
kmem_cache_destroy(cache);
}
+/*
+ * Check that SLAB_TYPESAFE_BY_RCU o... |
025e87f8ea2ae3a28bf1fe2b052bfa412c27ed4a | Analyze and fix the following issue in the Linux kernel code: nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* | Problem Details:
When accessing one of the files under /sys/fs/nilfs2/features when
CONFIG_CFI_CLANG is enabled, there is a CFI violation:
CFI failure at kobj_attr_show+0x59/0x80 (target: nilfs_feature_revision_show+0x0/0x30; expected type: 0xfc392c4d)
...
Call Trace:
<TASK>
sysfs_kf_seq_show+0x2a6/0x390
... | ```diff
diff --git a/fs/nilfs2/sysfs.c b/fs/nilfs2/sysfs.c
index 14868a3dd592..bc52afbfc5c7 100644
--- a/fs/nilfs2/sysfs.c
+++ b/fs/nilfs2/sysfs.c
@@ -1075,7 +1075,7 @@ void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs)
************************************************************************/
static ssi... |
c62cff40481c037307a13becbda795f7afdcfebd | Analyze and fix the following issue in the Linux kernel code: samples/damon/mtier: avoid starting DAMON before initialization | Problem Details:
Commit 964314344eab ("samples/damon/mtier: support boot time enable
setup") is somehow incompletely applying the origin patch [1]. It is
missing the part that avoids starting DAMON before module initialization.
Probably a mistake during a merge has happened. Fix it by applying the
missed part again.... | ```diff
diff --git a/samples/damon/mtier.c b/samples/damon/mtier.c
index 7ebd352138e4..beaf36657dea 100644
--- a/samples/damon/mtier.c
+++ b/samples/damon/mtier.c
@@ -208,6 +208,9 @@ static int damon_sample_mtier_enable_store(
if (enabled == is_enabled)
return 0;
+ if (!init_called)
+ return 0;
+
if (enabled)... |
e6b733ca2f99e968d696c2e812c8eb8e090bf37b | Analyze and fix the following issue in the Linux kernel code: samples/damon/prcl: avoid starting DAMON before initialization | Problem Details:
Commit 2780505ec2b4 ("samples/damon/prcl: fix boot time enable crash") is
somehow incompletely applying the origin patch [1]. It is missing the
part that avoids starting DAMON before module initialization. Probably a
mistake during a merge has happened. Fix it by applying the missed part
again.
Lin... | ```diff
diff --git a/samples/damon/prcl.c b/samples/damon/prcl.c
index 1b839c06a612..0226652f94d5 100644
--- a/samples/damon/prcl.c
+++ b/samples/damon/prcl.c
@@ -137,6 +137,9 @@ static int damon_sample_prcl_enable_store(
if (enabled == is_enabled)
return 0;
+ if (!init_called)
+ return 0;
+
if (enabled) {
... |
f826edeb888c5a8bd1b6e95ae6a50b0db2b21902 | Analyze and fix the following issue in the Linux kernel code: samples/damon/wsse: avoid starting DAMON before initialization | Problem Details:
Patch series "samples/damon: fix boot time enable handling fixup merge
mistakes".
First three patches of the patch series "mm/damon: fix misc bugs in DAMON
modules" [1] were trying to fix boot time DAMON sample modules enabling
issues. The issues are the modules can crash if those are enabled before
... | ```diff
diff --git a/samples/damon/wsse.c b/samples/damon/wsse.c
index da052023b099..21eaf15f987d 100644
--- a/samples/damon/wsse.c
+++ b/samples/damon/wsse.c
@@ -118,6 +118,9 @@ static int damon_sample_wsse_enable_store(
return 0;
if (enabled) {
+ if (!init_called)
+ return 0;
+
err = damon_sample_wsse_st... |
04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d | Analyze and fix the following issue in the Linux kernel code: mm/damon/sysfs: use dynamically allocated repeat mode damon_call_control | Problem Details:
DAMON sysfs interface is using a single global repeat mode
damon_call_control variable for refresh_ms handling, for all DAMON
contexts. As a result, when there are more than one context, the single
global damon_call_control is unexpectedly over-written (corrupted).
Particularly the ->link field is ov... | ```diff
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 7b9254cadd5f..c96c2154128f 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -1534,14 +1534,10 @@ static int damon_sysfs_repeat_call_fn(void *data)
return 0;
}
-static struct damon_call_control damon_sysfs_repeat_call_control = {
- .fn = damon_sy... |
e6a0deb6fa5b0fc134ee2aa127d1cfc9456d8445 | Analyze and fix the following issue in the Linux kernel code: mm/damon/core: introduce damon_call_control->dealloc_on_cancel | Problem Details:
Patch series "mm/damon/sysfs: fix refresh_ms control overwriting on
multi-kdamonds usages".
Automatic esssential DAMON/DAMOS status update feature of DAMON sysfs
interface (refresh_ms) is broken [1] for multiple DAMON contexts
(kdamonds) use case, since it uses a global single damon_call_control
objec... | ```diff
diff --git a/include/linux/damon.h b/include/linux/damon.h
index f13664c62ddd..9e62b2a85538 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -636,6 +636,7 @@ struct damon_operations {
* @data: Data that will be passed to @fn.
* @repeat: Repeat invocations.
* @return_code: Return code fr... |
2da6de30e60dd9bb14600eff1cc99df2fa2ddae3 | Analyze and fix the following issue in the Linux kernel code: mm: folio_may_be_lru_cached() unless folio_test_large() | Problem Details:
mm/swap.c and mm/mlock.c agree to drain any per-CPU batch as soon as a
large folio is added: so collect_longterm_unpinnable_folios() just wastes
effort when calling lru_add_drain[_all]() on a large folio.
But although there is good reason not to batch up PMD-sized folios, we
might well benefit from ba... | ```diff
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 2fe6ed2cc3fd..7012a0f758d8 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -385,6 +385,16 @@ void folio_add_lru_vma(struct folio *, struct vm_area_struct *);
void mark_page_accessed(struct page *);
void folio_mark_accessed(struct f... |
8d79ed36bfc83d0583ab72216b7980340478cdfb | Analyze and fix the following issue in the Linux kernel code: mm: revert "mm: vmscan.c: fix OOM on swap stress test" | Problem Details:
This reverts commit 0885ef470560: that was a fix to the reverted
33dfe9204f29b415bbc0abb1a50642d1ba94f5e9.
Link: https://lkml.kernel.org/r/aa0e9d67-fbcd-9d79-88a1-641dfbe1d9d1@google.com
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: "Aneesh Kumar K.V... | ```diff
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a48aec8bfd92..674999999cd0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -4507,7 +4507,7 @@ static bool sort_folio(struct lruvec *lruvec, struct folio *folio, struct scan_c
}
/* ineligible */
- if (!folio_test_lru(folio) || zone > sc->reclaim_idx) {
+ if (zone ... |
98c6d259319ecf6e8d027abd3f14b81324b8c0ad | Analyze and fix the following issue in the Linux kernel code: mm/gup: check ref_count instead of lru before migration | Problem Details:
Patch series "mm: better GUP pin lru_add_drain_all()", v2.
Series of lru_add_drain_all()-related patches, arising from recent mm/gup
migration report from Will Deacon.
This patch (of 5):
Will Deacon reports:-
When taking a longterm GUP pin via pin_user_pages(),
__gup_longterm_locked() tries to mig... | ```diff
diff --git a/mm/gup.c b/mm/gup.c
index adffe663594d..82aec6443c0a 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -2307,7 +2307,8 @@ static unsigned long collect_longterm_unpinnable_folios(
continue;
}
- if (!folio_test_lru(folio) && drain_allow) {
+ if (drain_allow && folio_ref_count(folio) !=
+ folio... |
a001cd248ab244633c5fabe4f7c707e13fc1d1cc | Analyze and fix the following issue in the Linux kernel code: rseq/selftests: Use weak symbol reference, not definition, to link with glibc | Problem Details:
Add "extern" to the glibc-defined weak rseq symbols to convert the rseq
selftest's usage from weak symbol definitions to weak symbol _references_.
Effectively re-defining the glibc symbols wreaks havoc when building with
-fno-common, e.g. generates segfaults when running multi-threaded programs,
as dyn... | ```diff
diff --git a/tools/testing/selftests/rseq/rseq.c b/tools/testing/selftests/rseq/rseq.c
index 663a9cef1952..dcac5cbe7933 100644
--- a/tools/testing/selftests/rseq/rseq.c
+++ b/tools/testing/selftests/rseq/rseq.c
@@ -40,9 +40,9 @@
* Define weak versions to play nice with binaries that are statically linked
* ... |
6eb350a2233100a283f882c023e5ad426d0ed63b | Analyze and fix the following issue in the Linux kernel code: rseq: Protect event mask against membarrier IPI | Problem Details:
rseq_need_restart() reads and clears task::rseq_event_mask with preemption
disabled to guard against the scheduler.
But membarrier() uses an IPI and sets the PREEMPT bit in the event mask
from the IPI, which leaves that RMW operation unprotected.
Use guard(irq) if CONFIG_MEMBARRIER is enabled to fix ... | ```diff
diff --git a/include/linux/rseq.h b/include/linux/rseq.h
index bc8af3eb5598..1fbeb61babeb 100644
--- a/include/linux/rseq.h
+++ b/include/linux/rseq.h
@@ -7,6 +7,12 @@
#include <linux/preempt.h>
#include <linux/sched.h>
+#ifdef CONFIG_MEMBARRIER
+# define RSEQ_EVENT_GUARD irq
+#else
+# define RSEQ_EVENT_GUA... |
f1880f9cc1476171bec3dae8fd56fff5665e22a4 | Analyze and fix the following issue in the Linux kernel code: can: peak: Modification of references to email accounts being deleted | Problem Details:
With the upcoming deletion of @peak-system.com accounts and following
the acquisition of PEAK-System and its brand by HMS-Networks, this fix
aims to migrate all address references to @hms-networks.com, as well
as to map my personal committer addresses to author addresses, while
taking the opportunity t... | ```diff
diff --git a/.mailmap b/.mailmap
index 4a5f2c8deeff..c393045d9361 100644
--- a/.mailmap
+++ b/.mailmap
@@ -740,6 +740,8 @@ Sriram Yagnaraman <sriram.yagnaraman@ericsson.com> <sriram.yagnaraman@est.tech>
Stanislav Fomichev <sdf@fomichev.me> <sdf@google.com>
Stanislav Fomichev <sdf@fomichev.me> <stfomichev@gmai... |
0e2ee70291e64a30fe36960c85294726d34a103e | Analyze and fix the following issue in the Linux kernel code: media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID | Problem Details:
Per UVC 1.1+ specification 3.7.2, units and terminals must have a non-zero
unique ID.
```
Each Unit and Terminal within the video function is assigned a unique
identification number, the Unit ID (UID) or Terminal ID (TID), contained in
the bUnitID or bTerminalID field of the descriptor. The value 0x00... | ```diff
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 10df845fb17e..fa61f1d0ea2c 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -137,6 +137,9 @@ struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id)
{
struct uvc_e... |
97b6ff8603f2bdd8863a4d9b8b5432e8f3272b64 | Analyze and fix the following issue in the Linux kernel code: media: uvcvideo: Drop stream->mutex | Problem Details:
Since commit c93d73c9c2cf ("media: uvcvideo: Use vb2 ioctl and fop
helpers"), the IOCTLs are serialized. Due to this there is no more need
to protect ctrl, cur_format or cur_frame from concurrent access.
Drop stream->mutex after thanking it for years of good service.
Use this opportunity to do fix so... | ```diff
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 775bede0d93d..3039e6a533b8 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -183,8 +183,6 @@ static void uvc_stream_delete(struct uvc_streaming *stream)
if (stream->async_wq)
... |
1ab40529ad52f339975886a6a9e815dfdcb8d011 | Analyze and fix the following issue in the Linux kernel code: media: uvcvideo: Move MSXU_CONTROL_METADATA definition to header | Problem Details:
Move the MSXU_CONTROL_METADATA control definitino to the
include/linux/usb/uvc.h header, alongside the corresponding XU GUID. Add
a UVC_ prefix to avoid namespace clashes.
While at it, add the definition for the other controls for that
extension unit, as defined in
https://learn.microsoft.com/en-us/wi... | ```diff
diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c
index 7368400734a3..b35111d08759 100644
--- a/drivers/media/usb/uvc/uvc_metadata.c
+++ b/drivers/media/usb/uvc/uvc_metadata.c
@@ -171,7 +171,6 @@ static struct uvc_entity *uvc_meta_find_msxu(struct uvc_device *dev)
return... |
e8e65d9237e590a953e17beb15bfd13dcfbe3ebf | Analyze and fix the following issue in the Linux kernel code: media: uvcvideo: Fix comments in uvc_meta_detect_msxu | Problem Details:
The comments can be more precise. Let's fix them.
Fixes: 6cb786f040ad ("media: uvcvideo: Auto-set UVC_QUIRK_MSXU_META")
Cc: stable+noautosel@kernel.org # Coment change only, no need to backport
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ribalda@ch... | ```diff
diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c
index 3b0b39289511..b0960f0553cf 100644
--- a/drivers/media/usb/uvc/uvc_metadata.c
+++ b/drivers/media/usb/uvc/uvc_metadata.c
@@ -196,7 +196,10 @@ static int uvc_meta_detect_msxu(struct uvc_device *dev)
if (!data)
retu... |
f4da0de6b4b470a60c5c0cc4c09b0c987f9df35f | Analyze and fix the following issue in the Linux kernel code: media: uvcvideo: Avoid variable shadowing in uvc_ctrl_cleanup_fh | Problem Details:
This avoids a variable loop shadowing occurring between the local loop
iterating through the uvc_entity's controls and the global one going
through the pending async controls of the file handle.
Fixes: 10acb9101355 ("media: uvcvideo: Increase/decrease the PM counter per IOCTL")
Cc: stable@vger.kernel.... | ```diff
diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c
index efe609d70877..55bbbef399d4 100644
--- a/drivers/media/usb/uvc/uvc_ctrl.c
+++ b/drivers/media/usb/uvc/uvc_ctrl.c
@@ -3307,7 +3307,6 @@ int uvc_ctrl_init_device(struct uvc_device *dev)
void uvc_ctrl_cleanup_fh(struct uvc_fh *h... |
e67b5f8313229d058bddc88e29a73b9b6cdab7a9 | Analyze and fix the following issue in the Linux kernel code: media: uvcvideo: Fix assignment in if condition | Problem Details:
The function uvc_input_init() uses an assignment of the return value
of input_register_device() within the condition of an if statement.
This coding style is discouraged by the Linux kernel coding style guide
as it can be confused with a comparison and hide potential bugs.
The checkpatch.pl script fla... | ```diff
diff --git a/drivers/media/usb/uvc/uvc_status.c b/drivers/media/usb/uvc/uvc_status.c
index ee01dce4b783..3c29c0bb3f7c 100644
--- a/drivers/media/usb/uvc/uvc_status.c
+++ b/drivers/media/usb/uvc/uvc_status.c
@@ -62,7 +62,8 @@ static int uvc_input_init(struct uvc_device *dev)
__set_bit(EV_KEY, input->evbit);
... |
08a9e5f8bb1e2233d19fb0c12f454e2d625532f5 | Analyze and fix the following issue in the Linux kernel code: iio: adc: ad7124: fix sample rate for multi-channel use | Problem Details:
Change how the FS[10:0] field of the FILTER register is calculated to
get consistent sample rates when only one channel is enabled vs when
multiple channels are enabled in a buffered read.
By default, the AD7124 allows larger sampling frequencies when only one
channel is enabled. It assumes that you w... | ```diff
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index d5bb0faf9111..6f4629c4a2f0 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -93,10 +93,11 @@
#define AD7124_CONFIG_PGA GENMASK(2, 0)
/* AD7124_FILTER_X */
-#define AD7124_FILTER_FS GENMASK(10, 0)
#define AD7124_... |
44a375e8aaff360944606b3bb2df89f1376cbaf3 | Analyze and fix the following issue in the Linux kernel code: ARM: 9458/1: module: Ensure the override of module_arch_freeing_init() | Problem Details:
The function module_arch_freeing_init() defined in arch/arm/kernel/module.c
is supposed to override a weak function of the same name defined in
kernel/module/main.c. However, the ARM override is also marked as weak,
which means that selecting the correct function unnecessarily depends on
the order in w... | ```diff
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index da488d92e7a0..55ca3fcd37e8 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -484,7 +484,7 @@ module_arch_cleanup(struct module *mod)
#endif
}
-void __weak module_arch_freeing_init(struct module *mod)
+void module_a... |
caffed0800ef4dd29cc29ee17a89d015e867e03a | Analyze and fix the following issue in the Linux kernel code: ARM: dts: sunxi: add support for NetCube Systems Nagami Keypad Carrier | Problem Details:
The NetCube Systems Nagami Keypad Carrier uses the Nagami SoM and contains
a TCA8418 connected to a 4x4 matrix keypad. The I2C2 interface is connected
to said TCA8418 and also a header for an PN532 NFC-Module. It also provides
a pin-header for a bi-color status led. Ethernet with PoE support is
availab... | ```diff
diff --git a/arch/arm/boot/dts/allwinner/Makefile b/arch/arm/boot/dts/allwinner/Makefile
index 865fd8c9d137..f71392a55df8 100644
--- a/arch/arm/boot/dts/allwinner/Makefile
+++ b/arch/arm/boot/dts/allwinner/Makefile
@@ -262,6 +262,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
sun8i-s3-pinecube.dtb \
sun8i-t113s-mangopi... |
e36d4d54eefb60144666b27754007e1c0dd0a581 | Analyze and fix the following issue in the Linux kernel code: ARM: dts: sunxi: add support for NetCube Systems Nagami Basic Carrier | Problem Details:
The NetCube Systems Nagami Basic Carrier is a Carrier for the Nagami SoM
It provides an ethernet port for the phy on the SoM and some USB-Ports.
All other interfaces and gpios are available on pinheader, except for the
SD-Interface which is available on a micro-sd slot.
Signed-off-by: Lukas Schmid <lu... | ```diff
diff --git a/arch/arm/boot/dts/allwinner/Makefile b/arch/arm/boot/dts/allwinner/Makefile
index 97d0a205493f..865fd8c9d137 100644
--- a/arch/arm/boot/dts/allwinner/Makefile
+++ b/arch/arm/boot/dts/allwinner/Makefile
@@ -200,6 +200,7 @@ DTC_FLAGS_sun8i-h3-nanopi-r1 := -@
DTC_FLAGS_sun8i-h3-orangepi-pc := -@
DTC... |
cba2febbd6465aabdff157fb95b1c07d090af1f0 | Analyze and fix the following issue in the Linux kernel code: ARM: dts: sunxi: add support for NetCube Systems Nagami SoM | Problem Details:
NetCube Systems Nagami SoM is a module based around the Allwinner T113s
SoC. It includes the following features and interfaces:
- 128MB DDR3 included in SoC
- 10/100 Mbps Ethernet using LAN8720A phy
- One USB-OTG interface
- One USB-Host interface
- One I2S interface with in and output support
- Two C... | ```diff
diff --git a/arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi b/arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi
new file mode 100644
index 000000000000..544d60cfc32e
--- /dev/null
+++ b/arch/arm/boot/dts/allwinner/sun8i-t113s-netcube-nagami.dtsi
@@ -0,0 +1,250 @@
+// SPDX-License-Identifi... |
cbce6d5326b116f55dc29f7fc0a7d56a9a03d9e5 | Analyze and fix the following issue in the Linux kernel code: riscv: dts: allwinner: d1s-t113: Add pinctrl's required by NetCube Systems Nagami SoM | Problem Details:
Added the following pinctrl's used by the NetCube Systems Nagami SoM
* i2c2_pins
* i2c3_pins
* i2s1_pins, i2s1_din_pins, i2s1_dout_pins
* spi1_pins, spi1_hold_pin, spi1_wp_pin
Signed-off-by: Lukas Schmid <lukas.schmid@netcube.li>
Link: https://patch.msgid.link/20250831162536.2380589-3-lukas.sc... | ```diff
diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
index e4175adb028d..63e252b44973 100644
--- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
+++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
@@ -78,6 +78,36 @@
function = "dsi";
... |
07c24945cafc810bcce3ea6c336a6495e813b47f | Analyze and fix the following issue in the Linux kernel code: Revert "drm: Add directive to format code in comment" | Problem Details:
Commit 6cc44e9618f03f ("drm: Add directive to format code in comment")
fixes original Sphinx indentation warning as introduced in
471920ce25d50b ("drm/gpuvm: Add locking helpers"), by means of using
code-block:: directive. It semantically conflicts with earlier
bb324f85f72284 ("drm/gpuvm: Wrap drm_gpuv... | ```diff
diff --git a/drivers/gpu/drm/drm_gpuvm.c b/drivers/gpu/drm/drm_gpuvm.c
index 60b672d3fd83..8b8a3ca8d7fc 100644
--- a/drivers/gpu/drm/drm_gpuvm.c
+++ b/drivers/gpu/drm/drm_gpuvm.c
@@ -2432,8 +2432,6 @@ static const struct drm_gpuvm_ops lock_ops = {
*
* The expected usage is:
*
- * .. code-block:: c
- *
*... |
a0c17ed907ac3326cf3c9d6007ea222a746f5cc2 | Analyze and fix the following issue in the Linux kernel code: iommu/amd: Fix alias device DTE setting | Problem Details:
Commit 7bea695ada0 restructured DTE flag handling but inadvertently changed
the alias device configuration logic. This may cause incorrect DTE settings
for certain devices.
Add alias flag check before calling set_dev_entry_from_acpi(). Also move the
device iteration loop inside the alias check to rest... | ```diff
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 6795326a6524..ba9e582a8bbe 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -1455,12 +1455,12 @@ static int __init init_iommu_from_acpi(struct amd_iommu *iommu,
PCI_FUNC(e->devid));
devid = e->devid;
- ... |
a2d2e6ea1865d316e4f0c0bbd8275ffdc4ec62f5 | Analyze and fix the following issue in the Linux kernel code: iommu/io-pgtable-dart: Fix off by one error in table index check | Problem Details:
The check for the dart table index allowed values of
(1 << data->tbl_bits) while only as many entries are initialized in
apple_dart_alloc_pgtable. This results in an array out of bounds access
when data->tbl_bits is at its maximal value of 2. When data->tbl_bits is
0 or 1 an unset (initialized to zero)... | ```diff
diff --git a/drivers/iommu/io-pgtable-dart.c b/drivers/iommu/io-pgtable-dart.c
index 9a63c80a2786..54d287cc0dd1 100644
--- a/drivers/iommu/io-pgtable-dart.c
+++ b/drivers/iommu/io-pgtable-dart.c
@@ -177,7 +177,7 @@ static dart_iopte *dart_get_last(struct dart_io_pgtable *data, unsigned long iov
int level = da... |
2b0dc40ac6ca16ee0c489927f4856cf9cd3874c7 | Analyze and fix the following issue in the Linux kernel code: crypto: ccp - Fix incorrect payload size calculation in psp_poulate_hsti() | Problem Details:
payload_size field of the request header is incorrectly calculated using
sizeof(req). Since 'req' is a pointer (struct hsti_request *), sizeof(req)
returns the size of the pointer itself (e.g., 8 bytes on a 64-bit system),
rather than the size of the structure it points to. This leads to an
incorrect p... | ```diff
diff --git a/drivers/crypto/ccp/hsti.c b/drivers/crypto/ccp/hsti.c
index 36f6534fbe08..c29c6a9c0f3f 100644
--- a/drivers/crypto/ccp/hsti.c
+++ b/drivers/crypto/ccp/hsti.c
@@ -88,7 +88,7 @@ static int psp_populate_hsti(struct psp_device *psp)
if (!req)
return -ENOMEM;
- req->header.payload_size = sizeof(r... |
f5d643156ef62216955c119216d2f3815bd51cb1 | Analyze and fix the following issue in the Linux kernel code: crypto: atmel - Fix dma_unmap_sg() direction | Problem Details:
It seems like everywhere in this file, dd->in_sg is mapped with
DMA_TO_DEVICE and dd->out_sg is mapped with DMA_FROM_DEVICE.
Fixes: 13802005d8f2 ("crypto: atmel - add Atmel DES/TDES driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Signed-off-by: Herbert Xu... | ```diff
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c
index 098f5532f389..3b2a92029b16 100644
--- a/drivers/crypto/atmel-tdes.c
+++ b/drivers/crypto/atmel-tdes.c
@@ -512,7 +512,7 @@ static int atmel_tdes_crypt_start(struct atmel_tdes_dev *dd)
if (err && (dd->flags & TDES_FLAGS_FAST)) {
d... |
21140e5caf019e4a24e1ceabcaaa16bd693b393f | Analyze and fix the following issue in the Linux kernel code: crypto: rockchip - Fix dma_unmap_sg() nents value | Problem Details:
The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.
Fixes: 57d67c6e8219 ("crypto: rockchip - rework by using crypto_engine")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Signed-off-by: ... | ```diff
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
index d6928ebe9526..b9f5a8b42e66 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
@@ -254,7 +254,7 @@ static void rk_hash_unprepare(struct cryp... |
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