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5afca7e996c42aed1b4a42d4712817601ba42aff
Analyze and fix the following issue in the Linux kernel code: selftests: mptcp: join: test for prohibited MPC to port-based endp
Problem Details: Explicitly verify that MPC connection attempts towards a port-based signal endpoint fail with a reset. Note that this new test is a bit different from the other ones, not using 'run_tests'. It is then needed to add the capture capability, and the picking the right port which have been extracted into t...
```diff diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh index e8d0a01b4144..c07e2bd3a315 100755 --- a/tools/testing/selftests/net/mptcp/mptcp_join.sh +++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh @@ -23,6 +23,7 @@ tmpfile="" cout="" err="" capout...
3d041393ea8c815f773020fb4a995331a69c0139
Analyze and fix the following issue in the Linux kernel code: mptcp: prevent MPC handshake on port-based signal endpoints
Problem Details: Syzkaller reported a lockdep splat: ============================================ WARNING: possible recursive locking detected 6.11.0-rc6-syzkaller-00019-g67784a74e258 #0 Not tainted -------------------------------------------- syz-executor364/5113 is trying to acquire lock: ffff8880449f195...
```diff diff --git a/net/mptcp/mib.c b/net/mptcp/mib.c index ad88bd3c58df..19eb9292bd60 100644 --- a/net/mptcp/mib.c +++ b/net/mptcp/mib.c @@ -17,6 +17,7 @@ static const struct snmp_mib mptcp_snmp_list[] = { SNMP_MIB_ITEM("MPCapableFallbackSYNACK", MPTCP_MIB_MPCAPABLEACTIVEFALLBACK), SNMP_MIB_ITEM("MPCapableSYNTXDr...
82ac39ebd6db0c9f7a97a934bda1e3e101a9d201
Analyze and fix the following issue in the Linux kernel code: net/smc: Fix searching in list of known pnetids in smc_pnet_add_pnetid
Problem Details: pnetid of pi (not newly allocated pe) should be compared Fixes: e888a2e8337c ("net/smc: introduce list of pnetids for Ethernet devices") Reviewed-by: D. Wythe <alibuda@linux.alibaba.com> Reviewed-by: Wen Gu <guwen@linux.alibaba.com> Signed-off-by: Li RongQing <lirongqing@baidu.com> Reviewed-by: Simon ...
```diff diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c index 1dd362326c0a..a04aa0e882f8 100644 --- a/net/smc/smc_pnet.c +++ b/net/smc/smc_pnet.c @@ -753,7 +753,7 @@ static int smc_pnet_add_pnetid(struct net *net, u8 *pnetid) write_lock(&sn->pnetids_ndev.lock); list_for_each_entry(pi, &sn->pnetids_ndev.list,...
d0c3601f2c4e12e7689b0f46ebc17525250ea8c3
Analyze and fix the following issue in the Linux kernel code: net: macb: Avoid 20s boot delay by skipping MDIO bus registration for fixed-link PHY
Problem Details: A boot delay was introduced by commit 79540d133ed6 ("net: macb: Fix handling of fixed-link node"). This delay was caused by the call to `mdiobus_register()` in cases where a fixed-link PHY was present. The MDIO bus registration triggered unnecessary PHY address scans, leading to a 20-second delay due t...
```diff diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index f06babec04a0..56901280ba04 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -930,9 +930,6 @@ static int macb_mdiobus_register(struct macb *bp) return r...
1037d186edfc551fa7ba2d4336e74e7575a07a65
Analyze and fix the following issue in the Linux kernel code: openrisc: Implement fixmap to fix earlycon
Problem Details: With commit 53c98e35dcbc ("openrisc: mm: remove unneeded early ioremap code") it was commented that early ioremap was not used in OpenRISC. I acked this but was wrong, earlycon was using it. Earlycon setup now fails with the below trace: Kernel command line: earlycon ------------[ cut here ]...
```diff diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 69c0258700b2..3279ef457c57 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -65,6 +65,9 @@ config STACKTRACE_SUPPORT config LOCKDEP_SUPPORT def_bool y +config FIX_EARLYCON_MEM + def_bool y + menu "Processor type and feature...
ccb22ca2805226bbcacdff0fc4b047d947f7948e
Analyze and fix the following issue in the Linux kernel code: rust: miscdevice: fix warning on c_uint to u32 cast
Problem Details: When building miscdevice with clippy warnings, the following warning is emitted: warning: casting to the same type is unnecessary (`u32` -> `u32`) --> /home/aliceryhl/rust-for-linux/rust/kernel/miscdevice.rs:220:28 | 220 | match T::ioctl(device, cmd as u32, arg as usize) { | ...
```diff diff --git a/rust/kernel/miscdevice.rs b/rust/kernel/miscdevice.rs index cbd5249b5b45..50885fb511bf 100644 --- a/rust/kernel/miscdevice.rs +++ b/rust/kernel/miscdevice.rs @@ -217,7 +217,7 @@ unsafe extern "C" fn fops_ioctl<T: MiscDevice>( // SAFETY: Ioctl calls can borrow the private data of the file. ...
d7252a0731ac6dd515e04e1f72e9247d6ded3492
Analyze and fix the following issue in the Linux kernel code: riscv: dts: thead: Add TH1520 pinctrl settings for UART0
Problem Details: Add pinctrl settings for UART0 used as the default debug console on both the Lichee Pi 4A and BeagleV Ahead boards. Acked-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com> Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com> S...
```diff diff --git a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts index 1a4154a6ff3b..0484fb390be4 100644 --- a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts +++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts @@ -61,6 +61,30 @@ status = "okay"; };...
cf57b5d7a2aad456719152ecd12007fe031628a3
Analyze and fix the following issue in the Linux kernel code: net: ethernet: aeroflex: fix potential memory leak in greth_start_xmit_gbit()
Problem Details: The greth_start_xmit_gbit() returns NETDEV_TX_OK without freeing skb in case of skb->len being too long, add dev_kfree_skb() to fix it. Fixes: d4c41139df6e ("net: Add Aeroflex Gaisler 10/100/1G Ethernet MAC driver") Signed-off-by: Wang Hai <wanghai38@huawei.com> Reviewed-by: Gerhard Engleder <gerhard@...
```diff diff --git a/drivers/net/ethernet/aeroflex/greth.c b/drivers/net/ethernet/aeroflex/greth.c index 27af7746d645..adf6f67c5fcb 100644 --- a/drivers/net/ethernet/aeroflex/greth.c +++ b/drivers/net/ethernet/aeroflex/greth.c @@ -484,7 +484,7 @@ greth_start_xmit_gbit(struct sk_buff *skb, struct net_device *dev) if...
a1494d532e28598bde7a5544892ef9c7dbfafa93
Analyze and fix the following issue in the Linux kernel code: netdevsim: use cond_resched() in nsim_dev_trap_report_work()
Problem Details: I am still seeing many syzbot reports hinting that syzbot might fool nsim_dev_trap_report_work() with hundreds of ports [1] Lets use cond_resched(), and system_unbound_wq instead of implicit system_wq. [1] INFO: task syz-executor:20633 blocked for more than 143 seconds. Not tainted 6.12.0-rc2-s...
```diff diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 92a7a36b93ac..3e0b61202f0c 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -836,7 +836,8 @@ static void nsim_dev_trap_report_work(struct work_struct *work) nsim_dev = nsim_trap_data->nsim_dev; if (!d...
cf58aefb1332db322060cad4a330d5f9292b0f41
Analyze and fix the following issue in the Linux kernel code: macsec: don't increment counters for an unrelated SA
Problem Details: On RX, we shouldn't be incrementing the stats for an arbitrary SA in case the actual SA hasn't been set up. Those counters are intended to track packets for their respective AN when the SA isn't currently configured. Due to the way MACsec is implemented, we don't keep counters unless the SA is configur...
```diff diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 12d1b205f6d1..26034f80d4a4 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -154,19 +154,6 @@ static struct macsec_rx_sa *macsec_rxsa_get(struct macsec_rx_sa __rcu *ptr) return sa; } -static struct macsec_rx_sa *macsec_active_rxs...
57c28e93694de1d95dfdc70ea5c0e3008b3376f7
Analyze and fix the following issue in the Linux kernel code: net: phy: aquantia: fix return value check in aqr107_config_mdi()
Problem Details: of_property_read_u32() returns -EINVAL in case the property cannot be found rather than -ENOENT. Fix the check to not abort probing in case of the property being missing, and also in case CONFIG_OF is not set which will result in -ENOSYS. Fixes: a2e1ba275eae ("net: phy: aquantia: allow forcing order o...
```diff diff --git a/drivers/net/phy/aquantia/aquantia_main.c b/drivers/net/phy/aquantia/aquantia_main.c index 4feb3b98c9da..38d0dd5c80a4 100644 --- a/drivers/net/phy/aquantia/aquantia_main.c +++ b/drivers/net/phy/aquantia/aquantia_main.c @@ -513,7 +513,7 @@ static int aqr107_config_mdi(struct phy_device *phydev) ret...
7cf3e9bfc63db5a9b3e83cd5d26d11061e31afc5
Analyze and fix the following issue in the Linux kernel code: dt-bindings: vendor-prefixes: add spacemit
Problem Details: Add new vendor strings to dt bindings for SpacemiT K1 SoC. Link: https://www.spacemit.com/en/spacemit-key-stone-2/ Signed-off-by: Yangyu Chen <cyy@cyyself.name> Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Yixun Lan <dlan@gentoo.org> Acked-by: Palmer Dabbelt <palmer@rivosinc.com>...
```diff diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index b320a39de7fe..848a7c67df1c 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -1386,6 +1386,8 @@ pat...
cb07c8338fc2b9d5f949a19d4a07ee4d5ecf8793
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/swsmu: Only force workload setup on init
Problem Details: Needed to set the workload type at init time so that we can apply the navi3x margin optimization. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3618 Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3131 Fixes: c50fe289ed72 ("drm/amdgpu/swsmu: always force a state reprogram on init") Rev...
```diff diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index bb3bc68dfc39..0cf598983552 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -2226,7 +2226,7 @@ static int smu_bump_power_profile_mode(struct smu_conte...
28127dba64d8ae1a0b737b973d6d029908599611
Analyze and fix the following issue in the Linux kernel code: drm/radeon: Fix encoder->possible_clones
Problem Details: Include the encoder itself in its possible_clones bitmask. In the past nothing validated that drivers were populating possible_clones correctly, but that changed in commit 74d2aacbe840 ("drm: Validate encoder->possible_clones"). Looks like radeon never got the memo and is still not following the rules ...
```diff diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 0f723292409e..fafed331e0a0 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -43,7 +43,7 @@ static uint32_t radeon_encoder_clones(struct drm_encoder *encod...
7a1613e47e65ba6967085ad99dee95420346a0ce
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/smu13: always apply the powersave optimization
Problem Details: It can avoid margin issues in some very demanding applications. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3618 Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3131 Fixes: c50fe289ed72 ("drm/amdgpu/swsmu: always force a state reprogram on init") Reviewed-by: Kenneth Feng <kenneth.fe...
```diff diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c index 1d024b122b0c..cb923e33fd6f 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c @@ -2555,18 +2555,16 @@ static in...
e7457532cb7167516263150ceae86f36d6ef9683
Analyze and fix the following issue in the Linux kernel code: drm/amd/amdgpu: Fix double unlock in amdgpu_mes_add_ring
Problem Details: This patch addresses a double unlock issue in the amdgpu_mes_add_ring function. The mutex was being unlocked twice under certain error conditions, which could lead to undefined behavior. The fix ensures that the mutex is unlocked only once before jumping to the clean_up_memory label. The unlock operat...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index 10b61ff63802..7d4b540340e0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -1203,8 +1203,10 @@ int amdgpu_mes_add_ring(struct amdgpu_device *adev, int gang_i...
7760d7f93c764625fedca176891238675fd06d62
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/mes: fix issue of writing to the same log buffer from 2 MES pipes
Problem Details: With Unified MES enabled in gfx12, need separate event log buffer for the 2 MES pipes to avoid data overwrite. Signed-off-by: Michael Chen <michael.chen@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 144df260f3daab...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c index 8d27421689c9..a37a6801c9ea 100644 --- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c @@ -621,7 +621,7 @@ static int mes_v12_0_set_hw_resources(struct amdgpu_mes *mes, int pip...
c0ec082f10b7a1fd25e8c1e2a686440da913b7a3
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu: prevent BO_HANDLES error from being overwritten
Problem Details: Before this patch, if multiple BO_HANDLES chunks were submitted, the error -EINVAL would be correctly set but could be overwritten by the return value from amdgpu_cs_p1_bo_handles(). This patch ensures that if there are multiple BO_HANDLES, we stop. Fixes: fec5f8e8c6bc ("drm/amdgpu: disallow multiple ...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 1e475eb01417..d891ab779ca7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -265,7 +265,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p, /* Only ...
d2c72d96dff5ba408bb107193b53e3134a516c4b
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu: enable enforce_isolation sysfs node on VFs
Problem Details: It should be enabled on both bare metal and VFs. Fixes: e189be9b2e38 ("drm/amdgpu: Add enforce_isolation sysfs attribute") Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Cc: Amber Lin <Amber.Lin@amd.com> Reviewed-by: Srinivasan Shanmugam...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 83e54697f0ee..f1ffab5a1eae 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -1635,11 +1635,9 @@ int amdgpu_gfx_sysfs_isolation_shader_init(struct amdgpu_devic...
1f021341eef41e77a633186e9be5223de2ce5d48
Analyze and fix the following issue in the Linux kernel code: nvme-multipath: defer partition scanning
Problem Details: We need to suppress the partition scan from occuring within the controller's scan_work context. If a path error occurs here, the IO will wait until a path becomes available or all paths are torn down, but that action also occurs within scan_work, so it would deadlock. Defer the partion scan to a differ...
```diff diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index bad1620fbbfc..6a15873055b9 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -579,6 +579,20 @@ static int nvme_add_ns_head_cdev(struct nvme_ns_head *head) return ret; } +static void nvme_partiti...
241463f4fdcc845fa4a174e63a23940305cb6691
Analyze and fix the following issue in the Linux kernel code: debugobjects: Remove pointless debug printk
Problem Details: It has zero value. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.390511021@linutronix.de
```diff diff --git a/lib/debugobjects.c b/lib/debugobjects.c index 2c866d0bdd68..fc54115818a1 100644 --- a/lib/debugobjects.c +++ b/lib/debugobjects.c @@ -1303,7 +1303,7 @@ static bool __init debug_objects_replace_static_objects(struct kmem_cache *cache struct debug_obj *obj, *new; struct hlist_node *tmp; HLIST_H...
813fd07858cfb410bc9574c05b7922185f65989b
Analyze and fix the following issue in the Linux kernel code: debugobjects: Collect newly allocated objects in a list to reduce lock contention
Problem Details: Collect the newly allocated debug objects in a list outside the lock, so that the lock held time and the potential lock contention is reduced. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240911083521.2257-...
```diff diff --git a/lib/debugobjects.c b/lib/debugobjects.c index df48acc5d4b3..798ce5ac1ffe 100644 --- a/lib/debugobjects.c +++ b/lib/debugobjects.c @@ -161,23 +161,25 @@ static void fill_pool(void) return; while (READ_ONCE(obj_pool_free) < debug_objects_pool_min_level) { - struct debug_obj *new[ODEBUG_BATCH_...
544dded8cb6317c2d3ecf4bba8412e616e70bb86
Analyze and fix the following issue in the Linux kernel code: netfilter: nf_tables: replace deprecated strncpy with strscpy_pad
Problem Details: strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. In this particular instance, the usage of strncpy() is fine and works as expected. However, towards the goal of [2], we should consider replacing it ...
```diff diff --git a/net/bridge/netfilter/nft_meta_bridge.c b/net/bridge/netfilter/nft_meta_bridge.c index d12a221366d6..5adced1e7d0c 100644 --- a/net/bridge/netfilter/nft_meta_bridge.c +++ b/net/bridge/netfilter/nft_meta_bridge.c @@ -63,7 +63,7 @@ static void nft_meta_bridge_get_eval(const struct nft_expr *expr, re...
0741f55593547d7f25ec003b355a21d6d5fef01e
Analyze and fix the following issue in the Linux kernel code: netfilter: nf_tables: Fix percpu address space issues in nf_tables_api.c
Problem Details: Compiling nf_tables_api.c results in several sparse warnings: nf_tables_api.c:2077:31: warning: incorrect type in return expression (different address spaces) nf_tables_api.c:2080:31: warning: incorrect type in return expression (different address spaces) nf_tables_api.c:2084:31: warning: incorrect ty...
```diff diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index a24fe62650a7..6552ec616745 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -2082,14 +2082,14 @@ static struct nft_stats __percpu *nft_stats_alloc(const struct nlattr *attr) err = nla_parse_nested...
9f7e94af35996effead76ff2837b5ba322e38963
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu: Fix off by one in current_memory_partition_show()
Problem Details: The >= ARRAY_SIZE() should be > ARRAY_SIZE() to prevent an out of bounds read. Fixes: 012be6f22c01 ("drm/amdgpu: Add sysfs interfaces for NPS mode") Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.c...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index 4e0a2d86a726..1c19a65e6553 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -1199,7 +1199,7 @@ static ssize_t current_memory_partition_show( enum amdgpu_mem...
336568de918e08c825b3b1cbe2ec809f2fc26d94
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/swsmu: default to fullscreen 3D profile for dGPUs
Problem Details: This uses more aggressive hueristics than the the bootup default profile. On windows the OS has a special fullscreen 3D mode where this is used. Since we don't have the equivalent on Linux default to this profile for dGPUs. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3618 Closes: https:/...
```diff diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index 89012029e8d7..0bd88212ff25 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -1265,7 +1265,11 @@ static int smu_sw_init(struct amdgpu_ip_block *ip_bloc...
580ad7cbd4b7be8d2cb5ab5c1fca6bb76045eb0e
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/swsmu: Only force workload setup on init
Problem Details: Needed to set the workload type at init time so that we can apply the navi3x margin optimization. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3618 Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3131 Fixes: c50fe289ed72 ("drm/amdgpu/swsmu: always force a state reprogram on init") Rev...
```diff diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index ec92e24b7bda..89012029e8d7 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -2232,7 +2232,7 @@ static int smu_bump_power_profile_mode(struct smu_conte...
3b6e7d40649c0d75572039aff9d0911864c689db
Analyze and fix the following issue in the Linux kernel code: drm/radeon: Fix encoder->possible_clones
Problem Details: Include the encoder itself in its possible_clones bitmask. In the past nothing validated that drivers were populating possible_clones correctly, but that changed in commit 74d2aacbe840 ("drm: Validate encoder->possible_clones"). Looks like radeon never got the memo and is still not following the rules ...
```diff diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 0f723292409e..fafed331e0a0 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -43,7 +43,7 @@ static uint32_t radeon_encoder_clones(struct drm_encoder *encod...
62f38b4ccaa6aa063ca781d80b10aacd39dc5c76
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/smu13: always apply the powersave optimization
Problem Details: It can avoid margin issues in some very demanding applications. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3618 Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3131 Fixes: c50fe289ed72 ("drm/amdgpu/swsmu: always force a state reprogram on init") Reviewed-by: Kenneth Feng <kenneth.fe...
```diff diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c index 866dc77d1005..4e658abe3a20 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c @@ -2542,18 +2542,16 @@ static in...
f9f3e8236e9e8fb1926297e23389905b63400a87
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: 3.2.305
Problem Details: - Add sharpening policy to plane state - Clear pipe pointers on pipe reset - Resolve correct MALL size for dcn401 - Read Sink emission rate capability - IPX fixes - Coverity fixes Reviewed-by: Roman Li <roman.li@amd.com> Signed-off-by: Aric Cyr <aric.cyr@amd.com> Signed-off-by: Roman Li <roman.li@amd....
```diff diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index ad8e2a91c306..6ba167d4c785 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -55,7 +55,7 @@ struct aux_payload; struct set_config_cmd_payload; struct dmub_notification; -#...
3ff3b48ac8eb303ffc8fd7952199adb302f179f8
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Check returned status from core_link_read_dpcd
Problem Details: [WHAT] The function core_link_read_dpcd returns status which is not used at all, making them useless assignments. [HOW] Print error messages if core_link_read_dpcd does not return DC_OK. This fixes 2 UNUSED_VALUE issues reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> S...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c index 952e787493c4..518e5d1f3d90 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocol...
ad6b76cd9145cd798655c18781736a2534f378c6
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: print messages when programming shaper/3dlut fails
Problem Details: [WHAT & HOW] Print error messages when programming shaper lut or 3dlut fails. This fixes 5 UNUSED_VALUE issues reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Daniel Wheel...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c index 9e1777f727c4..e89ebfda4873 100644 --- a/drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn30/dcn30_hwseq.c @@ -245,6 +245,7 @@ s...
0fe33e115fec305c35c66b78ad26e3755ab54b9c
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Full exit out of IPS2 when all allow signals have been cleared
Problem Details: [Why] A race condition occurs between cursor movement and vertical interrupt control thread from OS, with both threads trying to exit IPS2. Vertical interrupt control thread clears the prev driver allow signal while not fully finishing the IPS2 exit process. [How] We want to detect all the allow signa...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index 8486c144d81c..f0417ee6fcf8 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -1295,6 +1295,8 @@ static void dc_dmub_srv_notify_idle(const s...
74a55071dd9c1f75abc942bda964cab3684c780c
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Fix Coverity change for visual confirm
Problem Details: [Why && How] Previous change for Coverity has caused regression on visual confirm so fix it by reverting the part that affects visual confirm. Reviewed-by: Chris Park <chris.park@amd.com> Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Danie...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index 9291f078ffde..8486c144d81c 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -519,7 +519,8 @@ void dc_dmub_srv_get_visual_confirm_color_cmd...
df60dcf5b58a642e531609d0d673bb63a11ed06e
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Add 3DLUT FL HW bug workaround
Problem Details: [Why] There is a known HW bug that causes the internal 3DLUT fetch signal to be lost at VREADY, regardless of whether the OTG lock is being held or not. A workaround is necessary to make sure that this internal signal stays up after OTG unlock. [How] Set the 3DLUT_ENABLE bit immediately before and aft...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index d1e397d5f84e..743f3292d98e 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2650,7 +2650,8 @@ static enum surface_update_type det_surface_update(const st...
e421808cbe6d0ed124d255b684eebb21437df14a
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Remove useless assignments
Problem Details: [WHAT & HOW] "split_pipe" are assigned to test_pipe and then immediately are updated to other values. The same also applies to "status" as well. Similarly, "id", "dwb" and "unused_dpps" are assigned but the functions immediately return, and thus they have no effects. As a results, the assignments rem...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c index 866b0abcff1b..9190c1328d5b 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml2_wrapper.c @@ -209,8 +209,6 @@ static bool optimize_...
9237c9504b0e4f738365f023539c6f3dc5a8bb49
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Check status from dpcd_get_tunneling_device_data
Problem Details: [WHAT & HOW] dpcd_get_tunneling_device_data calls core_link_read_dpcd which can fail. The status from core_link_read_dpcd should be checked and error messages is printed in case of failures. This fixes 1 UNUSED_VALUE issue reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c index 286841456157..2ec968f239f7 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocol...
204f55736eb36b530cbcd6959477b44ed87a2213
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Check returns from drm_dp_dpcd_write
Problem Details: [WHAT & HOW] drm_dp_dpcd_write() returns negative error on failure and thus returned values need to be checked. This fixes 3 UNUSED_VALUE issues reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Roman Li <roman.l...
```diff diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index 6923184a6536..8eaf292bc4eb 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -643,6 +64...
bfaf1883605fd0c0dbabacd67ed49708470d5ea4
Analyze and fix the following issue in the Linux kernel code: drm/amd/amdgpu: Fix double unlock in amdgpu_mes_add_ring
Problem Details: This patch addresses a double unlock issue in the amdgpu_mes_add_ring function. The mutex was being unlocked twice under certain error conditions, which could lead to undefined behavior. The fix ensures that the mutex is unlocked only once before jumping to the clean_up_memory label. The unlock operat...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index aab9632a06ce..6909af56fcad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -1203,8 +1203,10 @@ int amdgpu_mes_add_ring(struct amdgpu_device *adev, int gang_i...
1791bd09af633aa40e8dbcb8e09bd62a0a2f35da
Analyze and fix the following issue in the Linux kernel code: drm/amd/display: Add hpd_source index out-of-bounds check for dcn3x link encoder creation
Problem Details: This patch adds a boundary check for the hpd_source index during the link encoder creation process for dcn3x IP's. The check ensures that the index is within the valid range of the link_enc_hpd_regs array to prevent out-of-bounds access. Cc: Tom Chung <chiahsuan.chung@amd.com> Cc: Rodrigo Siqueira <Ro...
```diff diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c index 5040a4c6ed18..baa4e2647dad 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn30/dcn30_reso...
144df260f3daab42c4611021f929b3342de516e5
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu/mes: fix issue of writing to the same log buffer from 2 MES pipes
Problem Details: With Unified MES enabled in gfx12, need separate event log buffer for the 2 MES pipes to avoid data overwrite. Signed-off-by: Michael Chen <michael.chen@amd.com> Reviewed-by: Jack Xiao <Jack.Xiao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c index f50071cf95b9..3daa8862e622 100644 --- a/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mes_v12_0.c @@ -621,7 +621,7 @@ static int mes_v12_0_set_hw_resources(struct amdgpu_mes *mes, int pip...
09661f75e75cb6c1d2d8326a70c311d46729235f
Analyze and fix the following issue in the Linux kernel code: ring-buffer: Fix reader locking when changing the sub buffer order
Problem Details: The function ring_buffer_subbuf_order_set() updates each ring_buffer_per_cpu and installs new sub buffers that match the requested page order. This operation may be invoked concurrently with readers that rely on some of the modified data, such as the head bit (RB_PAGE_HEAD), or the ring_buffer_per_cpu....
```diff diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index fb04445f92c3..3ea4f7bb1837 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -6728,39 +6728,38 @@ int ring_buffer_subbuf_order_set(struct trace_buffer *buffer, int order) } for_each_buffer_cpu(buffer, cpu)...
40f2cd98828f454bdc5006ad3d94330a5ea164b7
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu: prevent BO_HANDLES error from being overwritten
Problem Details: Before this patch, if multiple BO_HANDLES chunks were submitted, the error -EINVAL would be correctly set but could be overwritten by the return value from amdgpu_cs_p1_bo_handles(). This patch ensures that if there are multiple BO_HANDLES, we stop. Fixes: fec5f8e8c6bc ("drm/amdgpu: disallow multiple ...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 1e475eb01417..d891ab779ca7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -265,7 +265,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p, /* Only ...
dc8847b054fd6679866ed4ee861e069e54c10799
Analyze and fix the following issue in the Linux kernel code: drm/amdgpu: enable enforce_isolation sysfs node on VFs
Problem Details: It should be enabled on both bare metal and VFs. Fixes: e189be9b2e38 ("drm/amdgpu: Add enforce_isolation sysfs attribute") Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Cc: Amber Lin <Amber.Lin@amd.com> Reviewed-by: Srinivasan Shanmugam...
```diff diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 2fe75c920a73..ae692d0591ba 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -1625,11 +1625,9 @@ int amdgpu_gfx_sysfs_isolation_shader_init(struct amdgpu_devic...
28aabffae6be54284869a91cd8bccd3720041129
Analyze and fix the following issue in the Linux kernel code: io_uring/sqpoll: close race on waiting for sqring entries
Problem Details: When an application uses SQPOLL, it must wait for the SQPOLL thread to consume SQE entries, if it fails to get an sqe when calling io_uring_get_sqe(). It can do so by calling io_uring_enter(2) with the flag value of IORING_ENTER_SQ_WAIT. In liburing, this is generally done with io_uring_sqring_wait(). ...
```diff diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index 9d70b2cf7b1e..913dbcebe5c9 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -284,7 +284,14 @@ static inline bool io_sqring_full(struct io_ring_ctx *ctx) { struct io_rings *r = ctx->rings; - return READ_ONCE(r->sq.tail) - ctx->cached_...
e217f22041fe2478e8ab6e4cfa1774089db9a918
Analyze and fix the following issue in the Linux kernel code: drm/i915/pmu: Add support for gen2
Problem Details: Implement pmu support for gen2 so that one can use intel_gpu_top on it once again. Gen2 lacks MI_MODE/MODE_IDLE so we'll have to do a bit more work to determine the state of the engine: - to determine if the ring contains unconsumed data we can simply compare RING_TAIL vs. RING_HEAD - also check RIN...
```diff diff --git a/drivers/gpu/drm/i915/gt/intel_engine_regs.h b/drivers/gpu/drm/i915/gt/intel_engine_regs.h index a8eac59e3779..1c4784cb296c 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_regs.h @@ -15,6 +15,7 @@ #define HEAD_WRAP_COUNT 0xFFE00000 #define ...
51ceeb1a8142537b9f65aeaac6c301560a948197
Analyze and fix the following issue in the Linux kernel code: efs: fix the efs new mount api implementation
Problem Details: Commit 39a6c668e4 (efs: convert efs to use the new mount api) did not include anything from v2 and v3 that were also submitted. Fix this by bringing in those changes that were proposed in v2 and v3. Fixes: 39a6c668e4 efs: convert efs to use the new mount api. Signed-off-by: Bill O'Donnell <bodonnel@r...
```diff diff --git a/fs/efs/super.c b/fs/efs/super.c index e4421c10caeb..c59086b7eabf 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -15,7 +15,6 @@ #include <linux/vfs.h> #include <linux/blkdev.h> #include <linux/fs_context.h> -#include <linux/fs_parser.h> #include "efs.h" #include <linux/efs_vh.h> #include ...
c8347f915e6779f6c861e7a041adf3559d51b363
Analyze and fix the following issue in the Linux kernel code: gpu: host1x: Fix boot regression for Tegra
Problem Details: Commit 4c27ac45e622 ("gpu: host1x: Request syncpoint IRQs only during probe") caused a boot regression for the Tegra186 device. Following this update the function host1x_intr_init() now calls host1x_hw_intr_disable_all_syncpt_intrs() during probe. However, host1x_intr_init() is called before runtime po...
```diff diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index b62e4f0e8130..e98528777faa 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -625,12 +625,6 @@ static int host1x_probe(struct platform_device *pdev) goto free_contexts; } - err = host1x_intr_init(host); - if (err...
b0798838418abe996d9b618d341d865462264cbe
Analyze and fix the following issue in the Linux kernel code: firmware: arm_ffa: Avoid string-fortify warning caused by memcpy()
Problem Details: Copying from a 144 byte structure arm_smccc_1_2_regs at an offset of 32 into an 112 byte struct ffa_send_direct_data2 causes a compile-time warning: | In file included from drivers/firmware/arm_ffa/driver.c:25: | In function 'fortify_memcpy_chk', | inlined from 'ffa_msg_send_direct_req2' at driv...
```diff diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index 8dd81db9b071..b14cbdae94e8 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -501,7 +501,7 @@ static int ffa_msg_send_direct_req2(u16 src_id, u16 dst_id, const uuid_t *uuid, return...
ffd95846c6ec6cf1f93da411ea10d504036cab42
Analyze and fix the following issue in the Linux kernel code: x86/apic: Always explicitly disarm TSC-deadline timer
Problem Details: New processors have become pickier about the local APIC timer state before entering low power modes. These low power modes are used (for example) when you close your laptop lid and suspend. If you put your laptop in a bag and it is not in this low power mode, it is likely to get quite toasty while it q...
```diff diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 6513c53c9459..c5fb28e6451a 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -440,7 +440,19 @@ static int lapic_timer_shutdown(struct clock_event_device *evt) v = apic_read(APIC_LVTT); v |= (APIC_LVT_MAS...
bb9df28e6fcda6a96860e7b77f3912ef50e06793
Analyze and fix the following issue in the Linux kernel code: rtnl_net_debug: Remove rtnl_net_debug_exit().
Problem Details: kernel test robot reported section mismatch in rtnl_net_debug_exit(). WARNING: modpost: vmlinux: section mismatch in reference: rtnl_net_debug_exit+0x20 (section: .exit.text) -> rtnl_net_debug_net_ops (section: .init.data) rtnl_net_debug_exit() uses rtnl_net_debug_net_ops() that is annotated as __n...
```diff diff --git a/net/core/rtnl_net_debug.c b/net/core/rtnl_net_debug.c index e90a32242e22..f406045cbd0e 100644 --- a/net/core/rtnl_net_debug.c +++ b/net/core/rtnl_net_debug.c @@ -122,10 +122,4 @@ static int __init rtnl_net_debug_init(void) return ret; } -static void __exit rtnl_net_debug_exit(void) -{ - unregi...
fed13a5478680614ba97fc87e71f16e2e197912e
Analyze and fix the following issue in the Linux kernel code: dm: fix a crash if blk_alloc_disk fails
Problem Details: If blk_alloc_disk fails, the variable md->disk is set to an error value. cleanup_mapped_device will see that md->disk is non-NULL and it will attempt to access it, causing a crash on this statement "md->disk->private_data = NULL;". Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reported-by: Chen...
```diff diff --git a/drivers/md/dm.c b/drivers/md/dm.c index ff4a6b570b76..19230404d8c2 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2290,8 +2290,10 @@ static struct mapped_device *alloc_dev(int minor) * override accordingly. */ md->disk = blk_alloc_disk(NULL, md->numa_node_id); - if (IS_ERR(md->disk)...
637c4f6fe40befa04f19c38b5d15429cbb9191d9
Analyze and fix the following issue in the Linux kernel code: octeontx2-af: Fix potential integer overflows on integer shifts
Problem Details: The left shift int 32 bit integer constants 1 is evaluated using 32 bit arithmetic and then assigned to a 64 bit unsigned integer. In the case where the shift is 32 or more this can lead to an overflow. Avoid this by shifting using the BIT_ULL macro instead. Fixes: 019aba04f08c ("octeontx2-af: Modify ...
```diff diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c index 82832a24fbd8..da69350c6f76 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c @@ -2411,7 +2411,7 @@ static int nix_...
7aed6a2c51ffc97a126e0ea0c270fab7af97ae18
Analyze and fix the following issue in the Linux kernel code: kasan: Disable Software Tag-Based KASAN with GCC
Problem Details: Syzbot reports a KASAN failure early during boot on arm64 when building with GCC 12.2.0 and using the Software Tag-Based KASAN mode: | BUG: KASAN: invalid-access in smp_build_mpidr_hash arch/arm64/kernel/setup.c:133 [inline] | BUG: KASAN: invalid-access in setup_arch+0x984/0xd60 arch/arm64/kernel/...
```diff diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 98016e137b7f..233ab2096924 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -22,8 +22,11 @@ config ARCH_DISABLE_KASAN_INLINE config CC_HAS_KASAN_GENERIC def_bool $(cc-option, -fsanitize=kernel-address) +# GCC appears to ignore no_sanitize_ad...
1cff6ff302f5703a627f9ee1d99131161ea2683e
Analyze and fix the following issue in the Linux kernel code: net: stmmac: dwmac-tegra: Fix link bring-up sequence
Problem Details: The Tegra MGBE driver sometimes fails to initialize, reporting the following error, and as a result, it is unable to acquire an IP address with DHCP: tegra-mgbe 6800000.ethernet: timeout waiting for link to become ready As per the recommendation from the Tegra hardware design team, fix this issue by...
```diff diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c index 362f85136c3e..6fdd94c8919e 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c @@ -127,10 +127,12 @@ static int mgbe_uphy_la...
acfbac776496f2093e9facf7876b4015ef8c3d1d
Analyze and fix the following issue in the Linux kernel code: xfs: take XFS_MMAPLOCK_EXCL xfs_file_write_zero_eof
Problem Details: xfs_file_write_zero_eof is the only caller of xfs_zero_range that does not take XFS_MMAPLOCK_EXCL (aka the invalidate lock). Currently that is actually the right thing, as an error in the iomap zeroing code will also take the invalidate_lock to clean up, but to fix that deadlock we need a consistent l...
```diff diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 3efb0da2a910..b19916b11fd5 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -364,6 +364,7 @@ xfs_file_write_zero_eof( { struct xfs_inode *ip = XFS_I(iocb->ki_filp->f_mapping->host); loff_t isize; + int error; /* * We need to seria...
b78495166264fee1ed7ac44627e1dd080bbdf283
Analyze and fix the following issue in the Linux kernel code: iomap: move locking out of iomap_write_delalloc_release
Problem Details: XFS (which currently is the only user of iomap_write_delalloc_release) already holds invalidate_lock for most zeroing operations. To be able to avoid a deadlock it needs to stop taking the lock, but doing so in iomap would leak XFS locking details into iomap. To avoid this require the caller to hold ...
```diff diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index b4f742f31041..aa587b2142e2 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1211,12 +1211,13 @@ void iomap_write_delalloc_release(struct inode *inode, loff_t start_byte, loff_t scan_end_byte = min(i_size_read(inode), end_by...
caf0ea451d97c33c5bbaa0074dad33b0b2a4e649
Analyze and fix the following issue in the Linux kernel code: iomap: remove iomap_file_buffered_write_punch_delalloc
Problem Details: Currently iomap_file_buffered_write_punch_delalloc can be called from XFS either with the invalidate lock held or not. To fix this while keeping the locking in the file system and not the iomap library code we'll need to life the locking up into the file system. To prepare for that, open code iomap_f...
```diff diff --git a/Documentation/filesystems/iomap/operations.rst b/Documentation/filesystems/iomap/operations.rst index 8e6c721d2330..b93115ab8748 100644 --- a/Documentation/filesystems/iomap/operations.rst +++ b/Documentation/filesystems/iomap/operations.rst @@ -208,7 +208,7 @@ The filesystem must arrange to `cance...
b62f4c186c70aa235fef2da68d07325d85ca3ade
Analyze and fix the following issue in the Linux kernel code: net: usb: usbnet: fix race in probe failure
Problem Details: The same bug as in the disconnect code path also exists in the case of a failure late during the probe process. The flag must also be set. Signed-off-by: Oliver Neukum <oneukum@suse.com> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Link: https://patch.msgid.link/20241010131934.1499695-1-oneukum@suse.com S...
```diff diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index 2506aa8c603e..ee1b5fd7b491 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -1870,6 +1870,7 @@ out1: * may trigger an error resubmitting itself and, worse, * schedule a timer. So we kill it all just in case. *...
ecda483339a5151e3ca30d6b82691ef6f1d17912
Analyze and fix the following issue in the Linux kernel code: iommu/s390: Implement blocking domain
Problem Details: This fixes a crash when surprise hot-unplugging a PCI device. This crash happens because during hot-unplug __iommu_group_set_domain_nofail() attaching the default domain fails when the platform no longer recognizes the device as it has already been removed and we end up with a NULL domain pointer and U...
```diff diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index 9d920ced6047..30b20ce9a700 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -96,7 +96,6 @@ struct zpci_bar_struct { u8 size; /* order 2 exponent */ }; -struct s390_domain; struct kvm_zdev; #defin...
6e02a277f1db24fa039e23783c8921c7b0e5b1b3
Analyze and fix the following issue in the Linux kernel code: iommu/vt-d: Fix incorrect pci_for_each_dma_alias() for non-PCI devices
Problem Details: Previously, the domain_context_clear() function incorrectly called pci_for_each_dma_alias() to set up context entries for non-PCI devices. This could lead to kernel hangs or other unexpected behavior. Add a check to only call pci_for_each_dma_alias() for PCI devices. For non-PCI devices, domain_contex...
```diff diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 9f6b0780f2ef..e860bc9439a2 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -3340,8 +3340,10 @@ static int domain_context_clear_one_cb(struct pci_dev *pdev, u16 alias, void *op */ static void domain_cont...
57e755d333d1465c1cbf31d28245d429e1015beb
Analyze and fix the following issue in the Linux kernel code: fbdev: nvidiafb: fix inconsistent indentation warning
Problem Details: Fix the indentation to ensure consistent code style and improve readability, and to fix this warning: drivers/video/fbdev/nvidia/nv_hw.c:1512 NVLoadStateExt() warn: inconsistent indenting Signed-off-by: SurajSonawane2415 <surajsonawane0215@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de>
```diff diff --git a/drivers/video/fbdev/nvidia/nv_hw.c b/drivers/video/fbdev/nvidia/nv_hw.c index 9b0a324bb1b4..75afaa07e7eb 100644 --- a/drivers/video/fbdev/nvidia/nv_hw.c +++ b/drivers/video/fbdev/nvidia/nv_hw.c @@ -1509,10 +1509,10 @@ void NVLoadStateExt(struct nvidia_par *par, RIVA_HW_STATE * state) NV_WR32(par-...
447794e44744aff3c0f11942b83b878b8bb6f72b
Analyze and fix the following issue in the Linux kernel code: fbdev: sstfb: Make CONFIG_FB_DEVICE optional
Problem Details: The sstfb driver currently depends on CONFIG_FB_DEVICE to create sysfs entries and access info->dev. This patch wraps the relevant code blocks with #ifdef CONFIG_FB_DEVICE, allowing the driver to be built and used even if CONFIG_FB_DEVICE is not selected. The sysfs setting only controls the VGA pass-t...
```diff diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index ea36c6956bf3..44a8fdbab6df 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -1236,7 +1236,6 @@ config FB_3DFX_I2C config FB_VOODOO1 tristate "3Dfx Voodoo Graphics (sst1) support" depends on FB && PCI -...
90380119ef273c9f333067b9881b4fe0fc138df1
Analyze and fix the following issue in the Linux kernel code: drm/i915/display: Fix Panel Replay vblank enable workaround
Problem Details: Currently workaround is not applied when vblank is enabled on crtc that needs the workaround if vblank is already enabled for another crtc that doesn't need the workaround. Fix this by increasing counter only if crtc needs the workaround. Fixes: aa451abcffb5 ("drm/i915/display: Prevent DC6 while vblan...
```diff diff --git a/drivers/gpu/drm/i915/display/intel_display_irq.c b/drivers/gpu/drm/i915/display/intel_display_irq.c index 8226ea218d77..263fe3be891c 100644 --- a/drivers/gpu/drm/i915/display/intel_display_irq.c +++ b/drivers/gpu/drm/i915/display/intel_display_irq.c @@ -1447,7 +1447,7 @@ int bdw_enable_vblank(struc...
54ab6d160de35c84bd17604c227d9c3b2d2f2274
Analyze and fix the following issue in the Linux kernel code: drm/i915/display: Add own counter for Panel Replay vblank workaround
Problem Details: We are about to change meaning of vblank_enabled to fix Panel Replay vblank workaround. For sake of clarity we need to rename it. Vblank_enabled is used for i915gm/i945gm vblank irq workaround as well -> instead of rename add new counter named as vblank_wa_pipes. v2: - s/vblank_wa_pipes/vblank_wa_nu...
```diff diff --git a/drivers/gpu/drm/i915/display/intel_display_core.h b/drivers/gpu/drm/i915/display/intel_display_core.h index 982dd9469195..45697af25fa9 100644 --- a/drivers/gpu/drm/i915/display/intel_display_core.h +++ b/drivers/gpu/drm/i915/display/intel_display_core.h @@ -455,6 +455,8 @@ struct intel_display { ...
fa88dc7db176c79b50adb132a56120a1d4d9d18b
Analyze and fix the following issue in the Linux kernel code: media: dvb-core: add missing buffer index check
Problem Details: dvb_vb2_expbuf() didn't check if the given buffer index was for a valid buffer. Add this check. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reported-by: Chenyuan Yang <chenyuan0y@gmail.com> Closes: https://lore.kernel.org/linux-media/?q=WARNING+in+vb2_core_reqbufs Fixes: 7dc866df4012 ("medi...
```diff diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c index 192a8230c4aa..29edaaff7a5c 100644 --- a/drivers/media/dvb-core/dvb_vb2.c +++ b/drivers/media/dvb-core/dvb_vb2.c @@ -366,9 +366,15 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b) int dvb_vb2_expbuf(stru...
eabb03810194b75417b09cff8a526d26939736ac
Analyze and fix the following issue in the Linux kernel code: [PATCH} hwmon: (jc42) Properly detect TSE2004-compliant devices again
Problem Details: Commit b3e992f69c23 ("hwmon: (jc42) Strengthen detect function") attempted to make the detect function more robust for TSE2004-compliant devices by checking capability bits which, according to the JEDEC 21-C specification, should always be set. Unfortunately, not all real-world implementations fully a...
```diff diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c index a260cff750a5..c459dce496a6 100644 --- a/drivers/hwmon/jc42.c +++ b/drivers/hwmon/jc42.c @@ -417,7 +417,7 @@ static int jc42_detect(struct i2c_client *client, struct i2c_board_info *info) return -ENODEV; if ((devid & TSE2004_DEVID_MASK) == TSE...
11312c86f9d7d1bffe0587185934a7070ce9ec33
Analyze and fix the following issue in the Linux kernel code: selftests/cgroup: Fix compile error in test_cpu.c
Problem Details: When compiling the cgroup selftests with the following command: make -C tools/testing/selftests/cgroup/ the compiler complains as below: test_cpu.c: In function ‘test_cpucg_nice’: test_cpu.c:284:39: error: incompatible type for argument 2 of ‘hog_cpus_timed’ 284 | hog_cpus_timed(cp...
```diff diff --git a/tools/testing/selftests/cgroup/test_cpu.c b/tools/testing/selftests/cgroup/test_cpu.c index 201ce14cb422..a2b50af8e9ee 100644 --- a/tools/testing/selftests/cgroup/test_cpu.c +++ b/tools/testing/selftests/cgroup/test_cpu.c @@ -281,7 +281,7 @@ static int test_cpucg_nice(const char *root) /* Try ...
25c12b459db8365fee84b63f3dd7910f70627f29
Analyze and fix the following issue in the Linux kernel code: net/smc: Fix memory leak when using percpu refs
Problem Details: This patch adds missing percpu_ref_exit when releasing percpu refs. When releasing percpu refs, percpu_ref_exit should be called. Otherwise, memory leak happens. Fixes: 79a22238b4f2 ("net/smc: Use percpu ref for wr tx reference") Signed-off-by: Kai Shen <KaiShen@linux.alibaba.com> Reviewed-by: Dust Li...
```diff diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c index 0021065a600a..994c0cd4fddb 100644 --- a/net/smc/smc_wr.c +++ b/net/smc/smc_wr.c @@ -648,8 +648,10 @@ void smc_wr_free_link(struct smc_link *lnk) smc_wr_tx_wait_no_pending_sends(lnk); percpu_ref_kill(&lnk->wr_reg_refs); wait_for_completion(&lnk->reg_re...
d8794ac20a299b647ba9958f6d657051fc51a540
Analyze and fix the following issue in the Linux kernel code: posix-clock: Fix missing timespec64 check in pc_clock_settime()
Problem Details: As Andrew pointed out, it will make sense that the PTP core checked timespec64 struct's tv_sec and tv_nsec range before calling ptp->info->settime64(). As the man manual of clock_settime() said, if tp.tv_sec is negative or tp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL, whic...
```diff diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c index c2f3d0c490d5..316a4e8c97d3 100644 --- a/kernel/time/posix-clock.c +++ b/kernel/time/posix-clock.c @@ -318,6 +318,9 @@ static int pc_clock_settime(clockid_t id, const struct timespec64 *ts) goto out; } + if (!timespec64_valid_strict(...
e02bfea4d7ef587bb285ad5825da4e1973ac8263
Analyze and fix the following issue in the Linux kernel code: clk: qcom: clk-alpha-pll: Fix pll post div mask when width is not set
Problem Details: Many qcom clock drivers do not have .width set. In that case value of (p)->width - 1 will be negative which breaks clock tree. Fix this by checking if width is zero, and pass 3 to GENMASK if that's the case. Fixes: 1c3541145cbf ("clk: qcom: support for 2 bit PLL post divider") Signed-off-by: Barnabás ...
```diff diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index f9105443d7db..be9bee6ab65f 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -40,7 +40,7 @@ #define PLL_USER_CTL(p) ((p)->offset + (p)->regs[PLL_OFF_USER_CTL]) # define PLL_POST_DIV_...
5d3d966400d0a094359009147d742b3926a2ea53
Analyze and fix the following issue in the Linux kernel code: arm64: dts: qcom: sm8450 fix PIPE clock specification for pcie1
Problem Details: For historical reasons on SM8450 the second PCIe host (pcie1) also keeps a reference to the PIPE clock coming from the PHY. Commit e76862840660 ("arm64: dts: qcom: sm8450: correct pcie1 phy clocks inputs to gcc") has updated the PHY to use #clock-cells = <1>, making just <&pcie1_phy> clock specificatio...
```diff diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi index 9bafb3b350ff..38cb524cc568 100644 --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi @@ -1973,7 +1973,7 @@ clocks = <&gcc GCC_PCIE_1_PIPE_CLK>, <&gcc GCC_PCIE_1_PIPE_CLK_...
aab8d53711346d5569261aec9702b7579eecf1ab
Analyze and fix the following issue in the Linux kernel code: clk: qcom: videocc-sm8550: depend on either gcc-sm8550 or gcc-sm8650
Problem Details: This driver is compatible with both sm8550 and sm8650, fix the Kconfig entry to reflect that. Fixes: da1f361c887c ("clk: qcom: videocc-sm8550: Add SM8650 video clock controller") Signed-off-by: Jonathan Marek <jonathan@marek.ca> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: ...
```diff diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index 30eb8236c9d8..e5d7c89b0dab 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -1232,11 +1232,11 @@ config SM_VIDEOCC_8350 config SM_VIDEOCC_8550 tristate "SM8550 Video Clock Controller" depends on ARM64 || COMPILE_T...
3cc4e13bb1617f6a13e5e6882465984148743cf4
Analyze and fix the following issue in the Linux kernel code: cgroup: Fix potential overflow issue when checking max_depth
Problem Details: cgroup.max.depth is the maximum allowed descent depth below the current cgroup. If the actual descent depth is equal or larger, an attempt to create a new child cgroup will fail. However due to the cgroup->max_depth is of int type and having the default value INT_MAX, the condition 'level > cgroup->max...
```diff diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 5886b95c6eae..044c7ba1cc48 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5789,7 +5789,7 @@ static bool cgroup_check_hierarchy_limits(struct cgroup *parent) { struct cgroup *cgroup; int ret = false; - int level = 1; + ...
80fe25fcc605209b707583e3337e3cd40b7ed0bf
Analyze and fix the following issue in the Linux kernel code: arm64: dts: qcom: x1e80100: Add Broadcast_AND region in LLCC block
Problem Details: Add missing Broadcast_AND region to the LLCC block for x1e80100, as the LLCC version on this platform is 4.1 and it provides the region. This also fixes the following error caused by the missing region: [ 3.797768] qcom-llcc 25000000.system-cache-controller: error -EINVAL: invalid resource (null) ...
```diff diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi index 88a2e2f92599..27796ba1216f 100644 --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi @@ -6090,7 +6090,8 @@ <0 0x25a00000 0 0x200000>, <0 0x25c00000 0 0x20...
27344eb70c8fd60fe7c570e2e12f169ff89d2c47
Analyze and fix the following issue in the Linux kernel code: arm64: dts: qcom: x1e80100-vivobook-s15: Drop orientation-switch from USB SS[0-1] QMP PHYs
Problem Details: The orientation-switch is already set in the x1e80100 SoC dtsi, so drop from Vivobook S15 dts. Fixes: d0e2f8f62dff ("arm64: dts: qcom: Add device tree for ASUS Vivobook S 15") Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Link: https://lore.kernel.org/r/20241014-x1e80100-dts-drop-orientation-switch-...
```diff diff --git a/arch/arm64/boot/dts/qcom/x1e80100-asus-vivobook-s15.dts b/arch/arm64/boot/dts/qcom/x1e80100-asus-vivobook-s15.dts index 20616bd4aa6c..b54fe6100203 100644 --- a/arch/arm64/boot/dts/qcom/x1e80100-asus-vivobook-s15.dts +++ b/arch/arm64/boot/dts/qcom/x1e80100-asus-vivobook-s15.dts @@ -592,8 +592,6 @@ ...
eb2dd93d03b16ed0e8b09311f8d35cc5a691a9b7
Analyze and fix the following issue in the Linux kernel code: arm64: dts: qcom: x1e80100-slim7x: Drop orientation-switch from USB SS[0-1] QMP PHYs
Problem Details: The orientation-switch is already set in the x1e80100 SoC dtsi, so drop from Slim 7X dts. Fixes: 45247fe17db2 ("arm64: dts: qcom: x1e80100: add Lenovo Thinkpad Yoga slim 7x devicetree") Signed-off-by: Abel Vesa <abel.vesa@linaro.org> Link: https://lore.kernel.org/r/20241014-x1e80100-dts-drop-orientati...
```diff diff --git a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts index 1f292cd4a713..257907df5a64 100644 --- a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts +++ b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts @@ -909,8 +909,6 ...
da1642bc97c4ef67f347edcd493bd0a52f88777b
Analyze and fix the following issue in the Linux kernel code: firmware: arm_scmi: Queue in scmi layer for mailbox implementation
Problem Details: send_message() does not block in the MBOX implementation. This is because the mailbox layer has its own queue. However, this confuses the per xfer timeouts as they all start their timeout ticks in parallel. Consider a case where the xfer timeout is 30ms and a SCMI transaction takes 25ms: | 0ms: Mes...
```diff diff --git a/drivers/firmware/arm_scmi/transports/mailbox.c b/drivers/firmware/arm_scmi/transports/mailbox.c index 1a754dee24f7..e3d5f7560990 100644 --- a/drivers/firmware/arm_scmi/transports/mailbox.c +++ b/drivers/firmware/arm_scmi/transports/mailbox.c @@ -25,6 +25,7 @@ * @chan_platform_receiver: Optional P...
e4a45582db1b792c57bdb52c45958264f7fcfbdc
Analyze and fix the following issue in the Linux kernel code: drm/msm: Allocate memory for disp snapshot with kvzalloc()
Problem Details: With the "drm/msm: add a display mmu fault handler" series [1] we saw issues in the field where memory allocation was failing when allocating space for registers in msm_disp_state_dump_regs(). Specifically we were seeing an order 5 allocation fail. It's not surprising that order 5 allocations will some...
```diff diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c index bb149281d31f..4d55e3cf570f 100644 --- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c +++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c @@ -26,7 +26,7 @@ static void msm_disp_state_...
293f53263266bc4340d777268ab4328a97f041fa
Analyze and fix the following issue in the Linux kernel code: drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()
Problem Details: If the allocation in msm_disp_state_dump_regs() failed then `block->state` can be NULL. The msm_disp_state_print_regs() function _does_ have code to try to handle it with: if (*reg) dump_addr = *reg; ...but since "dump_addr" is initialized to NULL the above is actually a noop. The code then goe...
```diff diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c index add72bbc28b1..bb149281d31f 100644 --- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c +++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c @@ -48,20 +48,21 @@ static void msm_disp_stat...
358b762400bd94db2a14a72dfcef74c7da6bd845
Analyze and fix the following issue in the Linux kernel code: drm/msm/dsi: fix 32-bit signed integer extension in pclk_rate calculation
Problem Details: When (mode->clock * 1000) is larger than (1<<31), int to unsigned long conversion will sign extend the int to 64 bits and the pclk_rate value will be incorrect. Fix this by making the result of the multiplication unsigned. Note that above (1<<32) would still be broken and require more changes, but it...
```diff diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 1205aa398e44..a98d24b7cb00 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -550,7 +550,7 @@ static unsigned long dsi_get_pclk_rate(const struct drm_display_mode *mode, { unsi...
24436a540d16ca6a523b8e5441180001c31b6b35
Analyze and fix the following issue in the Linux kernel code: drm/msm/dsi: improve/fix dsc pclk calculation
Problem Details: drm_mode_vrefresh() can introduce a large rounding error, avoid it. Fixes: 7c9e4a554d4a ("drm/msm/dsi: Reduce pclk rate for compression") Signed-off-by: Jonathan Marek <jonathan@marek.ca> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>...
```diff diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 185d7de0bf37..1205aa398e44 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -542,7 +542,7 @@ static unsigned long dsi_adjust_pclk_for_compression(const struct drm_display_mo ...
f260ed880c1fbe6bd7fab47708a659e9df2bdbde
Analyze and fix the following issue in the Linux kernel code: drm/msm/hdmi: drop pll_cmp_to_fdata from hdmi_phy_8998
Problem Details: The pll_cmp_to_fdata() was never used by the working code. Drop it to prevent warnings with W=1 and clang. Reported-by: Jani Nikula <jani.nikula@intel.com> Closes: https://lore.kernel.org/dri-devel/3553b1db35665e6ff08592e35eb438a574d1ad65.1725962479.git.jani.nikula@intel.com Signed-off-by: Dmitry Bary...
```diff diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8998.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8998.c index 0e3a2b16a2ce..e6ffaf92d26d 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_phy_8998.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy_8998.c @@ -153,15 +153,6 @@ static inline u32 pll_get_pll_cmp(u64 fdata, unsigned long r...
3a0851b442d1f63ba42ecfa2506d3176cfabf9d4
Analyze and fix the following issue in the Linux kernel code: drm/msm/dpu: check for overflow in _dpu_crtc_setup_lm_bounds()
Problem Details: Make _dpu_crtc_setup_lm_bounds() check that CRTC width is not overflowing LM requirements. Rename the function accordingly. Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support") Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Tested-by: Abhinav Kumar <quic_abhinavk@quicinc.com> # sc7280 Signe...
```diff diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index e81feb0d67f3..db6c57900781 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -711,12 +711,13 @@ void dpu_crtc_complete_commit(struct drm_crtc *crtc) _dpu...
3ae133b0192b9b0c9f560bbc096887053150195f
Analyze and fix the following issue in the Linux kernel code: drm/msm/dpu: move CRTC resource assignment to dpu_encoder_virt_atomic_check
Problem Details: Historically CRTC resources (LMs and CTLs) were assigned in dpu_crtc_atomic_begin(). The commit 9222cdd27e82 ("drm/msm/dpu: move hw resource tracking to crtc state") simply moved resources to struct dpu_crtc_state, without changing the code sequence. Later on the commit b107603b4ad0 ("drm/msm/dpu: map ...
```diff diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index 4c1be2f0555f..e81feb0d67f3 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -1091,9 +1091,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc, dpu...
bfecbc2cfba9b06d67d9d249c33d92e570e2fa70
Analyze and fix the following issue in the Linux kernel code: drm/msm/dpu: make sure phys resources are properly initialized
Problem Details: The commit b954fa6baaca ("drm/msm/dpu: Refactor rm iterator") removed zero-init of the hw_ctl array, but didn't change the error condition, that checked for hw_ctl[i] being NULL. At the same time because of the early returns in case of an error dpu_encoder_phys might be left with the resources assigned...
```diff diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 3b171bf227d1..949ebda2fa82 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -1174,21 +1174,20 @@ static void dpu_encoder_virt_atomic_mode_set(...
629253b2f6d74e7bf9e7e3134ed6c8355a3c8619
Analyze and fix the following issue in the Linux kernel code: firmware: arm_ffa: Avoid string-fortify warning in export_uuid()
Problem Details: Copying to a 16 byte structure into an 8-byte struct member causes a compile-time warning: | In file included from drivers/firmware/arm_ffa/driver.c:25: | In function 'fortify_memcpy_chk', | inlined from 'export_uuid' at include/linux/uuid.h:88:2, | inlined from 'ffa_msg_send_direct_req2' at...
```diff diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c index 4d231bc375e0..8dd81db9b071 100644 --- a/drivers/firmware/arm_ffa/driver.c +++ b/drivers/firmware/arm_ffa/driver.c @@ -481,11 +481,16 @@ static int ffa_msg_send_direct_req2(u16 src_id, u16 dst_id, const uuid_t *uuid, ...
b7d0a97b28083084ebdd8e5c6bccd12e6ec18faa
Analyze and fix the following issue in the Linux kernel code: f2fs: fix null-ptr-deref in f2fs_submit_page_bio()
Problem Details: There's issue as follows when concurrently installing the f2fs.ko module and mounting the f2fs file system: KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] RIP: 0010:__bio_alloc+0x2fb/0x6c0 [f2fs] Call Trace: <TASK> f2fs_submit_page_bio+0x126/0x8b0 [f2fs] __get_meta_page+0x1d4...
```diff diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 87ab5696bd48..8d4ecb2e855e 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4991,9 +4991,6 @@ static int __init init_f2fs_fs(void) err = f2fs_init_shrinker(); if (err) goto free_sysfs; - err = register_filesystem(&f2fs_fs_type); - if (err) - got...
d5c367ef8287fb4d235c46a2f8c8d68715f3a0ca
Analyze and fix the following issue in the Linux kernel code: f2fs: fix f2fs_bug_on when uninstalling filesystem call f2fs_evict_inode.
Problem Details: creating a large files during checkpoint disable until it runs out of space and then delete it, then remount to enable checkpoint again, and then unmount the filesystem triggers the f2fs_bug_on as below: ------------[ cut here ]------------ kernel BUG at fs/f2fs/inode.c:896! CPU: 2 UID: 0 PID: 1286 Co...
```diff diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 1ed86df343a5..10780e37fc7b 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -775,8 +775,10 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) !is_inode_flag_set(inode, FI_DIRTY_INODE)) return 0; - if (!f2fs_is_checkpoint_...
26413ce18e85de3dda2cd3d72c3c3e8ab8f4f996
Analyze and fix the following issue in the Linux kernel code: f2fs: compress: fix inconsistent update of i_blocks in release_compress_blocks and reserve_compress_blocks
Problem Details: After release a file and subsequently reserve it, the FSCK flag is set when the file is deleted, as shown in the following backtrace: F2FS-fs (dm-48): Inconsistent i_blocks, ino:401231, iblocks:1448, sectors:1472 fs_rec_info_write_type+0x58/0x274 f2fs_rec_info_write+0x1c/0x2c set_sbi_flag+0x74/0x98 de...
```diff diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 321d8ffbab6e..adc7d64a6f47 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3792,7 +3792,7 @@ static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count, to_reserved = cluster_size - compr_blocks - reserved; /* for the case all block...
878b56e011af224386464c79e3b1b1a73342d847
Analyze and fix the following issue in the Linux kernel code: fix grammar on false-sharing.rst
Problem Details: Fix slight grammar mistake on kernel-hacking/false-sharing.rst Signed-off-by: Vishnu Sanal T <t.v.s10123@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241007191253.112697-2-t.v.s10123@gmail.com
```diff diff --git a/Documentation/kernel-hacking/false-sharing.rst b/Documentation/kernel-hacking/false-sharing.rst index 122b0e124656..eb0596734e55 100644 --- a/Documentation/kernel-hacking/false-sharing.rst +++ b/Documentation/kernel-hacking/false-sharing.rst @@ -196,9 +196,9 @@ the hotspot switches to a new place. ...
41047d53bcff9bf3f34b41889dd18648c1b7d678
Analyze and fix the following issue in the Linux kernel code: docs:process:changes: fix version command for btrfs-progs
Problem Details: The command given in the changes.rst document to check the version of btrfs-progs is: -> btrfsck which does not output the version, and according to manual page of the btrfs-progs the command to check the version of btrfs-progs is: -> btrfs --version Add a fix changing the command to check the version...
```diff diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst index 00f1ed7c59c3..82b5e378eebf 100644 --- a/Documentation/process/changes.rst +++ b/Documentation/process/changes.rst @@ -46,7 +46,7 @@ jfsutils 1.1.3 fsck.jfs -V reiserfsprogs 3.6.3 ...
1afe05b0cf183035a77fdda1bc633aa5fb9daa43
Analyze and fix the following issue in the Linux kernel code: perf evsel: Fix missing inherit + sample read check
Problem Details: It should not clear the inherit bit simply because the kernel doesn't support the sample read with it. IOW the inherit bit should be kept when the sample read is not requested for the event. Fixes: 90035d3cd876cb71 ("tools/perf: Allow inherit + PERF_SAMPLE_READ when opening events") Acked-by: Ben Gai...
```diff diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index ed0d4d20e357..e9e1f576d34d 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1915,7 +1915,8 @@ static int __evsel__prepare_open(struct evsel *evsel, struct perf_cpu_map *cpus, static void evsel__disable_missing_features...
04042674b21a8dfa143abacf7b1ef5b25a58d86e
Analyze and fix the following issue in the Linux kernel code: perf tools: Fix possible compiler warnings in hashmap
Problem Details: The hashmap__for_each_entry[_safe] is accessing 'map' as if it's a pointer. But it does without parentheses so passing a static hash map with an ampersand (like &slab_hash below) caused compiler warnings due to unmatched types. In file included from util/bpf_lock_contention.c:5: util/bpf_lock_con...
```diff diff --git a/tools/perf/util/hashmap.h b/tools/perf/util/hashmap.h index c12f8320e668..0c4f155e8eb7 100644 --- a/tools/perf/util/hashmap.h +++ b/tools/perf/util/hashmap.h @@ -166,8 +166,8 @@ bool hashmap_find(const struct hashmap *map, long key, long *value); * @bkt: integer used as a bucket loop cursor */ ...
2cf9733891a460a16a209fcc20fbd138605b13b8
Analyze and fix the following issue in the Linux kernel code: ring-buffer: Fix refcount setting of boot mapped buffers
Problem Details: A ring buffer which has its buffered mapped at boot up to fixed memory should not be freed. Other buffers can be. The ref counting setup was wrong for both. It made the not mapped buffers ref count have zero, and the boot mapped buffer a ref count of 1. But an normally allocated buffer should be 1, whe...
```diff diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1c69ca1f1088..a8f52b6527ca 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -10621,10 +10621,10 @@ __init static void enable_instances(void) * cannot be deleted by user space, so keep the reference * to it. */ - if (start...
0aa4523cdb9683e35af91ebdfae8d2fb4e6c3b8b
Analyze and fix the following issue in the Linux kernel code: dmaengine: ep93xx: Fix unsigned compared against 0
Problem Details: An unsigned value can never be negative, so this test will always evaluate the same way. In ep93xx_dma_alloc_chan_resources: An unsigned dma_cfg.port's value is checked against EP93XX_DMA_I2S1 which is 0. Signed-off-by: Advait Dhamorikar <advaitdhamorikar@gmail.com> Link: https://lore.kernel.org/r/202...
```diff diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c index 995427afe077..6d7f6bd12d76 100644 --- a/drivers/dma/ep93xx_dma.c +++ b/drivers/dma/ep93xx_dma.c @@ -929,8 +929,7 @@ static int ep93xx_dma_alloc_chan_resources(struct dma_chan *chan) /* Sanity check the channel parameters */ if (!edmac-...
d35f40642904b017d1301340734b91aef69d1c0c
Analyze and fix the following issue in the Linux kernel code: dmaengine: ti: k3-udma: Set EOP for all TRs in cyclic BCDMA transfer
Problem Details: When receiving data in cyclic mode from PDMA peripherals, where reload count is set to infinite, any TR in the set can potentially be the last one of the overall transfer. In such cases, the EOP flag needs to be set in each TR and PDMA's Static TR "Z" parameter should be set, matching the size of the T...
```diff diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index 406ee199c2ac..b3f27b3f9209 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -3185,27 +3185,40 @@ static int udma_configure_statictr(struct udma_chan *uc, struct udma_desc *d, d->static_tr.elcnt = elcnt; - /* - *...
6e9c5c8ef2820d18492d07172ac52f23ea8a54d9
Analyze and fix the following issue in the Linux kernel code: dmaengine: sh: rz-dmac: handle configs where one address is zero
Problem Details: Configs like the ones coming from the MMC subsystem will have either 'src' or 'dst' zeroed, resulting in an unknown bus width. This will bail out on the RZ DMA driver because of the sanity check for a valid bus width. Reorder the code, so that the check will only be applied when the corresponding addre...
```diff diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c index 65a27c5a7bce..811389fc9cb8 100644 --- a/drivers/dma/sh/rz-dmac.c +++ b/drivers/dma/sh/rz-dmac.c @@ -601,22 +601,25 @@ static int rz_dmac_config(struct dma_chan *chan, struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); u32 val; - cha...
1a3d6a9723d4dbdad41dad67b66a64d4a84c5f5c
Analyze and fix the following issue in the Linux kernel code: perf tools: Fix compiler error in util/tool_pmu.c
Problem Details: util/tool_pmu.c: In function 'evsel__tool_pmu_read': util/tool_pmu.c:419:55: error: passing argument 2 of 'tool_pmu__read_event' from incompatible pointer type [-Werror=incompatible-pointer-types] 419 | if (!tool_pmu__read_event(ev, &val)) { | ...
```diff diff --git a/tools/perf/util/tool_pmu.c b/tools/perf/util/tool_pmu.c index ea9d50f02520..bd1cee643eb5 100644 --- a/tools/perf/util/tool_pmu.c +++ b/tools/perf/util/tool_pmu.c @@ -394,7 +394,7 @@ bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result) int evsel__tool_pmu_read(struct evsel *evsel, int cpu...
d94d86cee1032bbf429d5bd0914b064e03b56f0e
Analyze and fix the following issue in the Linux kernel code: tools/perf/tests: Fix compilation error with strncpy in tests/tool_pmu
Problem Details: perf fails to compile on systems with GCC version11 as below: In file included from /usr/include/string.h:519, from /home/athir/perf-tools-next/tools/include/linux/bitmap.h:5, from /home/athir/perf-tools-next/tools/perf/util/pmu.h:5, from /home/athir/...
```diff diff --git a/tools/perf/tests/tool_pmu.c b/tools/perf/tests/tool_pmu.c index 94d0dd8fd3cb..297cc8c55579 100644 --- a/tools/perf/tests/tool_pmu.c +++ b/tools/perf/tests/tool_pmu.c @@ -22,7 +22,7 @@ static int do_test(enum tool_pmu_event ev, bool with_pmu) if (with_pmu) snprintf(str, sizeof(str), "tool/%s/",...