kernel/linux.git/drivers/gpu/drm/amd, branch v7.0.12

drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO

2026-06-09T10:32:48+00:00

commit a1ba4594232c87c3b8defd6f89a2e40f8b08395d upstream. kvcalloc(args->num_entries, sizeof(*vm_entries), GFP_KERNEL) at amdgpu_gem.c:1050 uses the user-supplied num_entries directly without any upper bounds check. Since num_entries is a __u32 and sizeof(drm_amdgpu_gem_vm_entry) is 32 bytes, a large num_entries produces an allocation exceeding INT_MAX, triggering WARNING in __kvmalloc_node_noprof(), causing a kernel WARNING, TAINT_WARN, and panic on CONFIG_PANIC_ON_WARN=y systems. Add a size bounds check before we invoke the kvzalloc() to reject oversized num_entries early with -EINVAL. Fixes: 4d82724f7f2b ("drm/amdgpu: Add mapping info option for GEM_OP ioctl") Signed-off-by: Ziyi Guo Signed-off-by: Alex Deucher (cherry picked from commit 1fe7bf5457f6efd7be60b17e23163ba54341d73d) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: fix amdgpu_hmm_range_get_pages

2026-06-09T10:32:47+00:00

commit 962d684b5dc0741dcd93485d41b450de402d5592 upstream. The notifier sequence must only be read once or otherwise we could work with invalid pages. While at it also fix the coding style, e.g. drop the pre-initialized return value and use the common define for 2G range. Signed-off-by: Christian König Reviewed-by: Vitaly Prosyak Tested-by: Vitaly Prosyak Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit c08972f555945cda57b0adb72272a37910153390) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: fix calling VM invalidation in amdgpu_hmm_invalidate_gfx

2026-06-09T10:32:47+00:00

commit 1c824497d8acd3187d585d6187cedc1897dcc871 upstream. Otherwise we don't invalidate page tables on next CS. Signed-off-by: Christian König Reviewed-by: Vitaly Prosyak Tested-by: Vitaly Prosyak Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit b6444d1bcbc34f6f2a31a3aab3059be082f3683e) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: fix lock leak on ENOMEM in AMDGPU_GEM_OP_GET_MAPPING_INFO

2026-06-09T10:32:47+00:00

commit 2e7f55eb408c3f72ee1957a0d0ad11d8648a6379 upstream. The AMDGPU_GEM_OP_GET_MAPPING_INFO branch of amdgpu_gem_op_ioctl() holds three cleanup-tracked resources before calling kvcalloc(): the drm_gem_object reference from drm_gem_object_lookup(), the drm_exec lock on the looked-up GEM via drm_exec_lock_obj(), and the drm_exec lock on the per-process VM root page directory via amdgpu_vm_lock_pd(). All three are released by the out_exec label that every other error path in this function jumps to. The kvcalloc() failure path returns -ENOMEM directly, skipping out_exec and leaking all three. The leaked per-process VM root PD dma_resv lock is the load-bearing leak: any subsequent operation on the same VM (further GEM ops, command-submission, eviction, TTM shrinker callbacks) blocks on the held lock. DRM_IOCTL_AMDGPU_GEM_OP is DRM_AUTH | DRM_RENDER_ALLOW, so this is an unprivileged-local denial of service against the caller's GPU context, reachable by any process with /dev/dri/renderD* access. Route the failure through out_exec so drm_exec_fini() and drm_gem_object_put() run. Reproduced on stock 7.0.0-10, Ryzen 7 5700U / Radeon Vega (Lucienne): the failing ioctl returns -ENOMEM and a second GET_MAPPING_INFO on the same fd then blocks in drm_exec_lock_obj() on the leaked dma_resv. SIGKILL on the caller does not reap the task; the fd-release path during process exit goes through amdgpu_gem_object_close() -> drm_exec_prepare_obj() on the same lock, leaving the task in D state until the box is rebooted. The patched kernel was not rebuilt and re-tested on this hardware; the fix is mechanical. Tested on a single Lucienne / Vega box only. Ziyi Guo posted an independent INT_MAX-bound check for args->num_entries in the same branch [1]; the two patches are complementary and can land in either order. Fixes: 4d82724f7f2b ("drm/amdgpu: Add mapping info option for GEM_OP ioctl") Link: https://lore.kernel.org/all/20260208000255.4073363-1-n7l8m4@u.northwestern.edu/ # [1] Signed-off-by: Michael Bommarito Assisted-by: Claude:claude-opus-4-7 Signed-off-by: Alex Deucher (cherry picked from commit b69d3256d79de15f54c322986ff4da68f1d65b0a) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdkfd: Check for pdd drm file first in CRIU restore path

2026-06-09T10:32:47+00:00

commit 6842b6a4b72da9b2906ffc5ca9d846ace2c54c14 upstream. CRIU restore ioctls are meant to be called by CRIU with no existing drm file. There's an error path for if the drm file unexpectedly exists. It was positioned so it was missing a fput(drm_file). Do that check earlier, as soon as we have the pdd. Signed-off-by: David Francis Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit 2bab781dac78916c5cc8de76345a4102449267d7) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdkfd: fix a vulnerability of integer overflow in kfd debugger

2026-06-09T10:32:47+00:00

commit 93f5534b35a05ef8a0109c1eefa800062fee810a upstream. get_queue_ids() computes array_size = num_queues * sizeof(uint32_t), which could overflow on 32-bit size_t build. using array_size() instead, it saturates to SIZE_MAX on overflow. Signed-off-by: Eric Huang Acked-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit 2d57a0475f085c08b49312dfd8edcb461845f285) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdkfd: fix NULL pointer bug in svm_range_set_attr

2026-06-09T10:32:47+00:00

commit e984d61d92e702096058f0f828f4b2b8563b88ce upstream. The process_info could be NULL if user doesn't call kfd_ioctl_acquire_vm before calling kfd_ioctl_svm. Signed-off-by: Eric Huang Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher (cherry picked from commit 83a26c812e0529eb040d31a76f73e33e637243d4) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amd/pm/si: Disregard vblank time when no displays are connected

2026-06-09T10:32:46+00:00

commit dd4f3ee535b3b0ac027f75dbf9dc5fc88733c765 upstream. When no displays are connected, there is no vblank happening so the power management code shouldn't worry about it. This fixes a regression that caused the memory clock to be stuck at maximum when there were no displays connected to a SI GPU. Fixes: 9003a0746864 ("drm/amd/pm: Treat zero vblank time as too short in si_dpm (v3)") Fixes: 9d73b107a61b ("drm/amd/pm: Use pm_display_cfg in legacy DPM (v2)") Reviewed-by: Alex Deucher Tested-by: Jeremy Klarenbeek Signed-off-by: Timur Kristóf Signed-off-by: Alex Deucher (cherry picked from commit 6d87e0199f7b83735b56e422d59f170a201897a8) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman

drm/amdgpu/vce1: Fix VCE 1 firmware size and offsets

2026-06-01T15:54:50+00:00

[ Upstream commit 3e5a1d5bb2ff061e64c7992f8e5404dfd4c2d0f3 ] The VCPU BO contains the actual FW at an offset, but it was not calculated into the VCPU BO size. Subtract this from the FW size to make sure there is no out of bounds access. Make sure the stack and data offsets are aligned to the 32K TLB size. Check that the FW microcode actually fits in the space that is reserved for it. Fixes: d4a640d4b9f3 ("drm/amdgpu/vce1: Implement VCE1 IP block (v2)") Signed-off-by: Timur Kristóf Reviewed-by: Christian König Signed-off-by: Alex Deucher (cherry picked from commit c16fe59f622a080fc457a57b3e8f14c780699449) Signed-off-by: Sasha Levin

drm/amdgpu/vce1: Check that the GPU address is < 128 MiB

2026-06-01T15:54:50+00:00

[ Upstream commit 9f907adb66d8369dd45412794a04845011503fa8 ] When ensuring the low 32-bit address, make sure it is less than 128 MiB, otherwise the VCE seems to fail to initialize. This seems to be an undocumented limitation of the firmware validation mechanism. Note that in case of VCE1 the BAR address is zero and we can't change it also due to the firmware validator. When programming the mmVCE_VCPU_CACHE_OFFSETn registers, don't AND them with a mask. This is incorrect because the register mask is actually 0x0fffffff and useless because we already ensure the addresses are below the limit. Signed-off-by: Timur Kristóf Reviewed-by: Christian König Signed-off-by: Alex Deucher (cherry picked from commit e729ae5f3ac73c861c062080ac8c3d666c972404) Stable-dep-of: 3e5a1d5bb2ff ("drm/amdgpu/vce1: Fix VCE 1 firmware size and offsets") Signed-off-by: Sasha Levin