kernel/linux.git/drivers/gpu/drm/amd/amdgpu, branch v5.4.61

drm/amdgpu: avoid dereferencing a NULL pointer

2020-08-19T06:16:00+00:00

[ Upstream commit 55611b507fd6453d26030c0c0619fdf0c262766d ] Check if irq_src is NULL to avoid dereferencing a NULL pointer, for MES ring is uneccessary to recieve an interrupt notification. Signed-off-by: Jack Xiao Acked-by: Alex Deucher Reviewed-by: Hawking Zhang Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl()

2020-08-05T07:59:43+00:00

commit 543e8669ed9bfb30545fd52bc0e047ca4df7fb31 upstream. Compiler leaves a 4-byte hole near the end of `dev_info`, causing amdgpu_info_ioctl() to copy uninitialized kernel stack memory to userspace when `size` is greater than 356. In 2015 we tried to fix this issue by doing `= {};` on `dev_info`, which unfortunately does not initialize that 4-byte hole. Fix it by using memset() instead. Cc: stable@vger.kernel.org Fixes: c193fa91b918 ("drm/amdgpu: information leak in amdgpu_info_ioctl()") Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)") Suggested-by: Dan Carpenter Reviewed-by: Christian König Signed-off-by: Peilin Ye Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers"

2020-08-05T07:59:43+00:00

commit 87004abfbc27261edd15716515d89ab42198b405 upstream. This regressed some working configurations so revert it. Will fix this properly for 5.9 and backport then. This reverts commit 38e0c89a19fd13f28d2b4721035160a3e66e270b. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: Fix NULL dereference in dpm sysfs handlers

2020-07-29T08:18:44+00:00

commit 38e0c89a19fd13f28d2b4721035160a3e66e270b upstream. NULL dereference occurs when string that is not ended with space or newline is written to some dpm sysfs interface (for example pp_dpm_sclk). This happens because strsep replaces the tmp with NULL if the delimiter is not present in string, which is then dereferenced by tmp[0]. Reproduction example: sudo sh -c 'echo -n 1 > /sys/class/drm/card0/device/pp_dpm_sclk' Signed-off-by: Paweł Gronowski Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: fix preemption unit test

2020-07-29T08:18:39+00:00

[ Upstream commit d845a2051b6b673fab4229b920ea04c7c4352b51 ] Remove signaled jobs from job list and ensure the job was indeed preempted. Signed-off-by: Jack Xiao Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu/gfx10: fix race condition for kiq

2020-07-29T08:18:39+00:00

[ Upstream commit 7d65a577bb58d4f27a3398a4c0cb0b00ab7d0511 ] During preemption test for gfx10, it uses kiq to trigger gfx preemption, which would result in race condition with flushing TLB for kiq. Signed-off-by: Jack Xiao Reviewed-by: Hawking Zhang Acked-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu/sdma5: fix wptr overwritten in ->get_wptr()

2020-07-22T07:33:17+00:00

commit 05051496b2622e4d12e2036b35165969aa502f89 upstream. "u64 *wptr" points to the the wptr value in write back buffer and "*wptr = (*wptr) >> 2;" results in the value being overwritten each time when ->get_wptr() is called. umr uses /sys/kernel/debug/dri/0/amdgpu_ring_sdma0 to get rptr/wptr and decode ring content and it is affected by this issue. fix and simplify the logic similar as sdma_v4_0_ring_get_wptr(). v2: fix for sdma5.2 as well v3: drop sdma 5.2 changes for 5.8 and stable Suggested-by: Le Ma Signed-off-by: Xiaojie Yuan Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: don't do soft recovery if gpu_recovery=0

2020-07-16T06:16:46+00:00

commit f4892c327a8e5df7ce16cab40897daf90baf6bec upstream. It's impossible to debug shader hangs with soft recovery. Signed-off-by: Marek Olšák Reviewed-by: Alex Deucher Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/atomfirmware: fix vram_info fetching for renoir

2020-07-09T07:37:56+00:00

commit d7a6634a4cfba073ff6a526cb4265d6e58ece234 upstream. Renoir uses integrated_system_info table v12. The table has the same layout as v11 with respect to this data. Just reuse the existing code for v12 for stable. Fixes incorrectly reported vram info in the driver output. Acked-by: Evan Quan Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: use %u rather than %d for sclk/mclk

2020-07-09T07:37:56+00:00

commit beaf10efca64ac824240838ab1f054dfbefab5e6 upstream. Large clock values may overflow and show up as negative. Reported by prOMiNd on IRC. Acked-by: Nirmoy Das Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman