Applied. Thanks! Alex On Wed, Dec 18, 2024 at 3:03 AM Lazar, Lijo <lijo.lazar@xxxxxxx> wrote: > > > > On 12/18/2024 4:28 AM, Mirsad Todorovac wrote: > > The static analyser tool gave the following advice: > > > > ./drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c:1266:7-14: WARNING opportunity for kmemdup > > > > → 1266 tmp = kmalloc(used_size, GFP_KERNEL); > > 1267 if (!tmp) > > 1268 return -ENOMEM; > > 1269 > > → 1270 memcpy(tmp, &host_telemetry->body.error_count, used_size); > > > > Replacing kmalloc() + memcpy() with kmemdump() doesn't change semantics. > > Original code works without fault, so this is not a bug fix but proposed improvement. > > > > Link: https://lwn.net/Articles/198928/ > > Fixes: 84a2947ecc85c ("drm/amdgpu: Implement virt req_ras_err_count") > > Cc: Alex Deucher <alexander.deucher@xxxxxxx> > > Cc: "Christian König" <christian.koenig@xxxxxxx> > > Cc: Xinhui Pan <Xinhui.Pan@xxxxxxx> > > Cc: David Airlie <airlied@xxxxxxxxx> > > Cc: Simona Vetter <simona@xxxxxxxx> > > Cc: Zhigang Luo <Zhigang.Luo@xxxxxxx> > > Cc: Victor Skvortsov <victor.skvortsov@xxxxxxx> > > Cc: Hawking Zhang <Hawking.Zhang@xxxxxxx> > > Cc: Lijo Lazar <lijo.lazar@xxxxxxx> > > Cc: Yunxiang Li <Yunxiang.Li@xxxxxxx> > > Cc: Jack Xiao <Jack.Xiao@xxxxxxx> > > Cc: Vignesh Chander <Vignesh.Chander@xxxxxxx> > > Cc: Danijel Slivka <danijel.slivka@xxxxxxx> > > Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > > Cc: linux-kernel@xxxxxxxxxxxxxxx > > Signed-off-by: Mirsad Todorovac <mtodorovac69@xxxxxxxxx> > > Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx> > > Thanks, > Lijo > > > --- > > v1: > > initial version. > > > > drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 4 +--- > > 1 file changed, 1 insertion(+), 3 deletions(-) > > > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c > > index c704e9803e11..0af469ec6fcc 100644 > > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c > > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c > > @@ -1263,12 +1263,10 @@ static int amdgpu_virt_cache_host_error_counts(struct amdgpu_device *adev, > > if (used_size > (AMD_SRIOV_RAS_TELEMETRY_SIZE_KB << 10)) > > return 0; > > > > - tmp = kmalloc(used_size, GFP_KERNEL); > > + tmp = kmemdup(&host_telemetry->body.error_count, used_size, GFP_KERNEL); > > if (!tmp) > > return -ENOMEM; > > > > - memcpy(tmp, &host_telemetry->body.error_count, used_size); > > - > > if (checksum != amd_sriov_msg_checksum(tmp, used_size, 0, 0)) > > goto out; > > >
