November 2024 - Kernel - mailweb.openeuler.org

[openeuler:openEuler-1.0-LTS 15256/23932] arch/arm64/kernel/mpam/mpam_device.c:1250: warning: Function parameter or member 'comp' not described in 'do_device_sync'
by kernel test robot 01 Nov '24

01 Nov '24

tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: c129df6fe938fddc83fddea6a1976cd18573b095 commit: b55756d8f2c3e005e73aa59652dae1e528956862 [15256/23932] arm64/mpam: Implement helpers for handling configuration and monitoring config: arm64-randconfig-001-20241029 (https://download.01.org/0day-ci/archive/20241101/202411011311.9dahsLh5-lkp@…) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241101/202411011311.9dahsLh5-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202411011311.9dahsLh5-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/arm64/kernel/mpam/mpam_device.c:520:24: warning: no previous prototype for 'mpam_component_get' [-Wmissing-prototypes] 520 | struct mpam_component *mpam_component_get(struct mpam_class *class, int id, | ^~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:612:1: warning: no previous prototype for '__mpam_device_create' [-Wmissing-prototypes] 612 | __mpam_device_create(u8 level_idx, enum mpam_class_types type, | ^~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:692:12: warning: no previous prototype for 'mpam_discovery_start' [-Wmissing-prototypes] 692 | int __init mpam_discovery_start(void) | ^~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:918:12: warning: no previous prototype for 'mpam_discovery_complete' [-Wmissing-prototypes] 918 | int __init mpam_discovery_complete(void) | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c:935:13: warning: no previous prototype for 'mpam_discovery_failed' [-Wmissing-prototypes] 935 | void __init mpam_discovery_failed(void) | ^~~~~~~~~~~~~~~~~~~~~ In file included from arch/arm64/include/asm/atomic.h:34, from include/linux/atomic.h:7, from include/asm-generic/bitops/atomic.h:5, from arch/arm64/include/asm/bitops.h:37, from include/linux/bitops.h:19, from include/linux/kernel.h:11, from include/asm-generic/bug.h:18, from arch/arm64/include/asm/bug.h:37, from include/linux/bug.h:5, from include/linux/io.h:23, from arch/arm64/kernel/mpam/mpam_device.c:29: In function '__cmpxchg_case_mb_4', inlined from '__cmpxchg_mb' at arch/arm64/include/asm/cmpxchg.h:143:1, inlined from 'mpam_cpu_online' at arch/arm64/kernel/mpam/mpam_device.c:891:8: arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'int[1]' [-Warray-bounds=] 492 | asm volatile( \ | ^~~ arch/arm64/include/asm/atomic_lse.h:523:1: note: in expansion of macro '__CMPXCHG_CASE' 523 | __CMPXCHG_CASE(w, , mb_4, al, "memory") | ^~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c: In function 'mpam_cpu_online': arch/arm64/kernel/mpam/mpam_device.c:73:12: note: object 'mpam_broken' of size 4 73 | static int mpam_broken; | ^~~~~~~~~~~ In function '__cmpxchg_case_mb_4', inlined from '__cmpxchg_mb' at arch/arm64/include/asm/cmpxchg.h:143:1, inlined from 'mpam_cpu_online' at arch/arm64/kernel/mpam/mpam_device.c:891:8: arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'int[1]' [-Warray-bounds=] 492 | asm volatile( \ | ^~~ arch/arm64/include/asm/atomic_lse.h:523:1: note: in expansion of macro '__CMPXCHG_CASE' 523 | __CMPXCHG_CASE(w, , mb_4, al, "memory") | ^~~~~~~~~~~~~~ arch/arm64/kernel/mpam/mpam_device.c: In function 'mpam_cpu_online': arch/arm64/kernel/mpam/mpam_device.c:73:12: note: object 'mpam_broken' of size 4 73 | static int mpam_broken; | ^~~~~~~~~~~ >> arch/arm64/kernel/mpam/mpam_device.c:1250: warning: Function parameter or member 'comp' not described in 'do_device_sync' >> arch/arm64/kernel/mpam/mpam_device.c:1250: warning: Function parameter or member 'sync_ctx' not described in 'do_device_sync' vim +1250 arch/arm64/kernel/mpam/mpam_device.c 1242 1243 /** 1244 * in some cases/platforms the MSC register access is only possible with 1245 * the associated CPUs. And need to check if those CPUS are online before 1246 * accessing it. So we use those CPUs dev->online_affinity to apply config. 1247 */ 1248 static int do_device_sync(struct mpam_component *comp, 1249 struct mpam_device_sync *sync_ctx) > 1250 { 1251 int cpu; 1252 struct mpam_device *dev; 1253 1254 lockdep_assert_cpus_held(); 1255 1256 cpu = get_cpu(); 1257 if (cpumask_test_cpu(cpu, &comp->fw_affinity)) 1258 mpam_component_device_sync(sync_ctx); 1259 put_cpu(); 1260 1261 /* 1262 * Find the set of other CPUs we need to run on to update 1263 * this component 1264 */ 1265 list_for_each_entry(dev, &comp->devices, comp_list) { 1266 if (sync_ctx->error) 1267 break; 1268 1269 if (cpumask_intersects(&dev->online_affinity, 1270 &sync_ctx->updated_on)) 1271 continue; 1272 1273 /* 1274 * This device needs the config applying, and hasn't been 1275 * reachable by any cpu so far. 1276 */ 1277 cpu = cpumask_any(&dev->online_affinity); 1278 smp_call_function_single(cpu, mpam_component_device_sync, 1279 sync_ctx, 1); 1280 } 1281 1282 return sync_ctx->error; 1283 } 1284 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[openeuler:OLK-5.10 19549/30000] arch/arm64/kernel/cpufeature.c:1729:13: warning: no previous prototype for 'early_pbha_init'
by kernel test robot 01 Nov '24

01 Nov '24

Hi Ma, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 8c742fc5ad4aebf865be0fa53ebdbf26f0991e2c commit: f43933b3f947a7f9314ec8d704c6ae01041dbbba [19549/30000] arm64: cpufeature: Enable PBHA for stage1 early via FDT config: arm64-randconfig-003-20241029 (https://download.01.org/0day-ci/archive/20241101/202411011254.Q328bGAB-lkp@…) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241101/202411011254.Q328bGAB-lkp@…) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp(a)intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202411011254.Q328bGAB-lkp@intel.com/ Note: functions only called from assembly code should be annotated with the asmlinkage attribute All warnings (new ones prefixed by >>): arch/arm64/kernel/cpufeature.c:1627:6: warning: no previous prototype for 'update_pbha_perf_only_bit' [-Wmissing-prototypes] 1627 | void update_pbha_perf_only_bit(const u8 *bits, int cnt) | ^~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/arm64/kernel/cpufeature.c:1729:13: warning: no previous prototype for 'early_pbha_init' [-Wmissing-prototypes] 1729 | void __init early_pbha_init(void) | ^~~~~~~~~~~~~~~ vim +/early_pbha_init +1729 arch/arm64/kernel/cpufeature.c 1728 > 1729 void __init early_pbha_init(void) 1730 { 1731 void *fdt; 1732 int node; 1733 const u8 *prop; 1734 int size; 1735 1736 spin_lock(&pbha_dt_lock); 1737 1738 fdt = get_early_fdt_ptr(); 1739 if (!fdt) 1740 goto unlock; 1741 1742 node = fdt_path_offset(fdt, "/cpus"); 1743 if (node < 0) 1744 goto unlock; 1745 1746 prop = fdt_getprop(fdt, node, "arm,pbha-performance-only", &size); 1747 if (!prop) 1748 goto unlock; 1749 1750 if (!cpu_has_pbha()) 1751 goto unlock; 1752 1753 update_pbha_perf_only_bit(prop, size); 1754 enable_pbha_inner(); 1755 1756 pbha_enabled = true; 1757 1758 unlock: 1759 spin_unlock(&pbha_dt_lock); 1760 } 1761 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki

1 0

[PATCH openEuler-22.03-LTS-SP1] lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
by Zhang Zekun 01 Nov '24

01 Nov '24

From: Kent Overstreet <kent.overstreet(a)linux.dev> stable inclusion from stable-v5.10.226 commit 99418ec776a39609f50934720419e0b464ca2283 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAVU82 CVE: CVE-2024-47668 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ----------------------------------------------------------- [ Upstream commit b2f11c6f3e1fc60742673b8675c95b78447f3dae ] If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path. Signed-off-by: Kent Overstreet <kent.overstreet(a)linux.dev> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- lib/generic-radix-tree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/generic-radix-tree.c b/lib/generic-radix-tree.c index 7dfa88282b00..78f081d695d0 100644 --- a/lib/generic-radix-tree.c +++ b/lib/generic-radix-tree.c @@ -131,6 +131,8 @@ void *__genradix_ptr_alloc(struct __genradix *radix, size_t offset, if ((v = cmpxchg_release(&radix->root, r, new_root)) == r) { v = new_root; new_node = NULL; + } else { + new_node->children[0] = NULL; } } -- 2.17.1

2 1

[PATCH OLK-5.10] lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
by Zhang Zekun 01 Nov '24

01 Nov '24

From: Kent Overstreet <kent.overstreet(a)linux.dev> stable inclusion from stable-v5.10.226 commit 99418ec776a39609f50934720419e0b464ca2283 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAVU82 CVE: CVE-2024-47668 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ----------------------------------------------------------- [ Upstream commit b2f11c6f3e1fc60742673b8675c95b78447f3dae ] If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path. Signed-off-by: Kent Overstreet <kent.overstreet(a)linux.dev> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- lib/generic-radix-tree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/generic-radix-tree.c b/lib/generic-radix-tree.c index 7dfa88282b00..78f081d695d0 100644 --- a/lib/generic-radix-tree.c +++ b/lib/generic-radix-tree.c @@ -131,6 +131,8 @@ void *__genradix_ptr_alloc(struct __genradix *radix, size_t offset, if ((v = cmpxchg_release(&radix->root, r, new_root)) == r) { v = new_root; new_node = NULL; + } else { + new_node->children[0] = NULL; } } -- 2.17.1

2 1

[PATCH OLK-5.10] lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
by Zhang Zekun 01 Nov '24

01 Nov '24

From: Kent Overstreet <kent.overstreet(a)linux.dev> stable inclusion from stable-v5.10.226 commit 99418ec776a39609f50934720419e0b464ca2283 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAVU82 CVE: CVE-2024-47668 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ----------------------------------------------------------- [ Upstream commit b2f11c6f3e1fc60742673b8675c95b78447f3dae ] If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path. Signed-off-by: Kent Overstreet <kent.overstreet(a)linux.dev> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zhang Zekun <zhangzekun11(a)huawei.com> --- lib/generic-radix-tree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/generic-radix-tree.c b/lib/generic-radix-tree.c index 7dfa88282b00..78f081d695d0 100644 --- a/lib/generic-radix-tree.c +++ b/lib/generic-radix-tree.c @@ -131,6 +131,8 @@ void *__genradix_ptr_alloc(struct __genradix *radix, size_t offset, if ((v = cmpxchg_release(&radix->root, r, new_root)) == r) { v = new_root; new_node = NULL; + } else { + new_node->children[0] = NULL; } } -- 2.17.1

2 1

[PATCH OLK-6.6 v3 0/3] CVE-2024-50063
by Pu Lehui 01 Nov '24

01 Nov '24

Pu Lehui (1): bpf: Fix kabi breakage in struct bpf_map Xu Kuohai (2): bpf: Prevent tail call between progs attached to different hooks selftests/bpf: Add test for lsm tail call include/linux/bpf.h | 2 +- kernel/bpf/core.c | 21 +++++++-- .../selftests/bpf/prog_tests/test_lsm.c | 46 ++++++++++++++++++- .../selftests/bpf/progs/lsm_tailcall.c | 34 ++++++++++++++ 4 files changed, 98 insertions(+), 5 deletions(-) create mode 100644 tools/testing/selftests/bpf/progs/lsm_tailcall.c -- 2.34.1

2 4

[PATCH OLK-6.6] drm/amd/display: Check null-initialized variables
by Zheng Zucheng 01 Nov '24

01 Nov '24

From: Alex Hung <alex.hung(a)amd.com> mainline inclusion from mainline-v6.12-rc1 commit 367cd9ceba1933b63bc1d87d967baf6d9fd241d2 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYR8V CVE: CVE-2024-49898 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [WHAT & HOW] drr_timing and subvp_pipe are initialized to null and they are not always assigned new values. It is necessary to check for null before dereferencing. This fixes 2 FORWARD_NULL issues reported by Coverity. Reviewed-by: Nevenko Stupar <nevenko.stupar(a)amd.com> Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira(a)amd.com> Signed-off-by: Jerry Zuo <jerry.zuo(a)amd.com> Signed-off-by: Alex Hung <alex.hung(a)amd.com> Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Conflicts: drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c [Some contexts subvp_vblank_schedulable different. No functional impact.] Signed-off-by: Zheng Zucheng <zhengzucheng(a)huawei.com> --- drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c index 3d82cbef1274..ac6357c089e7 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c @@ -932,8 +932,9 @@ static bool subvp_drr_schedulable(struct dc *dc, struct dc_state *context) * for VBLANK: (VACTIVE region of the SubVP pipe can fit the MALL prefetch, VBLANK frame time, * and the max of (VBLANK blanking time, MALL region)). */ - if (stretched_drr_us < (1 / (double)drr_timing->min_refresh_in_uhz) * 1000000 * 1000000 && - subvp_active_us - prefetch_us - stretched_drr_us - max_vblank_mallregion > 0) + if (drr_timing && + stretched_drr_us < (1 / (double)drr_timing->min_refresh_in_uhz) * 1000000 * 1000000 && + subvp_active_us - prefetch_us - stretched_drr_us - max_vblank_mallregion > 0) schedulable = true; return schedulable; @@ -995,7 +996,7 @@ static bool subvp_vblank_schedulable(struct dc *dc, struct dc_state *context) if (!subvp_pipe && pipe->stream->mall_stream_config.type == SUBVP_MAIN) subvp_pipe = pipe; } - if (found) { + if (found && subvp_pipe) { main_timing = &subvp_pipe->stream->timing; phantom_timing = &subvp_pipe->stream->mall_stream_config.paired_stream->timing; vblank_timing = &context->res_ctx.pipe_ctx[vblank_index].stream->timing; -- 2.34.1

2 1

[PATCH openEuler-22.03-LTS-SP1] drm/amd/display: Check null pointers before using them
by Zheng Zucheng 01 Nov '24

01 Nov '24

From: Alex Hung <alex.hung(a)amd.com> mainline inclusion from mainline-v6.12-rc1 commit 1ff12bcd7deaeed25efb5120433c6a45dd5504a8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRD7 CVE: CVE-2024-49922 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 1ff12bcd7deaeed25efb5120433c6a45dd5504a8 ] [WHAT & HOW] These pointers are null checked previously in the same function, indicating they might be null as reported by Coverity. As a result, they need to be checked when used again. This fixes 3 FORWARD_NULL issue reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira(a)amd.com> Signed-off-by: Jerry Zuo <jerry.zuo(a)amd.com> Signed-off-by: Alex Hung <alex.hung(a)amd.com> Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c [amdgpu_dm_commit_streams() without this processing logic, the null pointer judgment of this function does not need backport. Some contexts around amdgpu_dm_atomic_commit_tail(), No functional impact.] Signed-off-by: Zheng Zucheng <zhengzucheng(a)huawei.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 9c316dec0319..8da1fda96262 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5385,6 +5385,9 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, int requested_bpc = drm_state ? drm_state->max_requested_bpc : 8; enum dc_status dc_result = DC_OK; + if (!dm_state) + return NULL; + do { stream = create_stream_for_sink(aconnector, drm_mode, dm_state, old_stream, @@ -7801,11 +7804,12 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) } if (is_content_protection_different(new_con_state, old_con_state, connector, adev->dm.hdcp_workqueue)) - hdcp_update_display( - adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector, - new_con_state->hdcp_content_type, - new_con_state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED ? true - : false); + if (aconnector->dc_link) + hdcp_update_display( + adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector, + new_con_state->hdcp_content_type, + new_con_state->content_protection == DRM_MODE_CONTENT_PROTECTION_DESIRED ? true + : false); } #endif -- 2.34.1

2 1

[PATCH OLK-6.6] drm/amd/display: Check null pointers before using them
by Zheng Zucheng 01 Nov '24

01 Nov '24

From: Alex Hung <alex.hung(a)amd.com> mainline inclusion from mainline-v6.12-rc1 commit 1ff12bcd7deaeed25efb5120433c6a45dd5504a8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRD7 CVE: CVE-2024-49922 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 1ff12bcd7deaeed25efb5120433c6a45dd5504a8 ] [WHAT & HOW] These pointers are null checked previously in the same function, indicating they might be null as reported by Coverity. As a result, they need to be checked when used again. This fixes 3 FORWARD_NULL issue reported by Coverity. Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira(a)amd.com> Signed-off-by: Jerry Zuo <jerry.zuo(a)amd.com> Signed-off-by: Alex Hung <alex.hung(a)amd.com> Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c [amdgpu_dm_commit_streams() without this processing logic, the null pointer judgment of this function does not need backport] Signed-off-by: Zheng Zucheng <zhengzucheng(a)huawei.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 6b8f945cf8ad..14caefd47e33 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6606,6 +6606,9 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, int requested_bpc = drm_state ? drm_state->max_requested_bpc : 8; enum dc_status dc_result = DC_OK; + if (!dm_state) + return NULL; + do { stream = create_stream_for_sink(aconnector, drm_mode, dm_state, old_stream, @@ -8832,9 +8835,10 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) DRM_INFO("[HDCP_DM] hdcp_update_display enable_encryption = %x\n", enable_encryption); - hdcp_update_display( - adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector, - new_con_state->hdcp_content_type, enable_encryption); + if (aconnector->dc_link) + hdcp_update_display( + adev->dm.hdcp_workqueue, aconnector->dc_link->link_index, aconnector, + new_con_state->hdcp_content_type, enable_encryption); } } -- 2.34.1

2 1

[PATCH OLK-6.6] media: i2c: ar0521: Use cansleep version of gpiod_set_value()
by Zheng Zucheng 01 Nov '24

01 Nov '24

From: Alexander Shiyan <eagle.alexander923(a)gmail.com> stable inclusion from stable-v6.6.55 commit 625a77b68c96349c16fcc1faa42784313e0b1a85 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRC4 CVE: CVE-2024-49961 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit bee1aed819a8cda47927436685d216906ed17f62 upstream. If we use GPIO reset from I2C port expander, we must use *_cansleep() variant of GPIO functions. This was not done in ar0521_power_on()/ar0521_power_off() functions. Let's fix that. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11 at drivers/gpio/gpiolib.c:3496 gpiod_set_value+0x74/0x7c Modules linked in: CPU: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.10.0 #53 Hardware name: Diasom DS-RK3568-SOM-EVB (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : gpiod_set_value+0x74/0x7c lr : ar0521_power_on+0xcc/0x290 sp : ffffff8001d7ab70 x29: ffffff8001d7ab70 x28: ffffff80027dcc90 x27: ffffff8003c82000 x26: ffffff8003ca9250 x25: ffffffc080a39c60 x24: ffffff8003ca9088 x23: ffffff8002402720 x22: ffffff8003ca9080 x21: ffffff8003ca9088 x20: 0000000000000000 x19: ffffff8001eb2a00 x18: ffffff80efeeac80 x17: 756d2d6332692f30 x16: 0000000000000000 x15: 0000000000000000 x14: ffffff8001d91d40 x13: 0000000000000016 x12: ffffffc080e98930 x11: ffffff8001eb2880 x10: 0000000000000890 x9 : ffffff8001d7a9f0 x8 : ffffff8001d92570 x7 : ffffff80efeeac80 x6 : 000000003fc6e780 x5 : ffffff8001d91c80 x4 : 0000000000000002 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000001 Call trace: gpiod_set_value+0x74/0x7c ar0521_power_on+0xcc/0x290 ... Signed-off-by: Alexander Shiyan <eagle.alexander923(a)gmail.com> Fixes: 852b50aeed15 ("media: On Semi AR0521 sensor driver") Cc: stable(a)vger.kernel.org Acked-by: Krzysztof Hałasa <khalasa(a)piap.pl> Signed-off-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zheng Zucheng <zhengzucheng(a)huawei.com> --- drivers/media/i2c/ar0521.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/ar0521.c b/drivers/media/i2c/ar0521.c index a4e39871e8f7..375284a59fd1 100644 --- a/drivers/media/i2c/ar0521.c +++ b/drivers/media/i2c/ar0521.c @@ -847,7 +847,8 @@ static int ar0521_power_off(struct device *dev) clk_disable_unprepare(sensor->extclk); if (sensor->reset_gpio) - gpiod_set_value(sensor->reset_gpio, 1); /* assert RESET signal */ + /* assert RESET signal */ + gpiod_set_value_cansleep(sensor->reset_gpio, 1); for (i = ARRAY_SIZE(ar0521_supply_names) - 1; i >= 0; i--) { if (sensor->supplies[i]) @@ -881,7 +882,7 @@ static int ar0521_power_on(struct device *dev) if (sensor->reset_gpio) /* deassert RESET signal */ - gpiod_set_value(sensor->reset_gpio, 0); + gpiod_set_value_cansleep(sensor->reset_gpio, 0); usleep_range(4500, 5000); /* min 45000 clocks */ for (cnt = 0; cnt < ARRAY_SIZE(initial_regs); cnt++) { -- 2.34.1

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Kernel November 2024