<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c, branch linux-5.15.y</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>drm/amdgpu: fix usage slab after free</title>
<updated>2025-05-02T05:44:19+00:00</updated>
<author>
<name>Vitaly Prosyak</name>
<email>vitaly.prosyak@amd.com</email>
</author>
<published>2024-11-11T22:24:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3cc1116de10953f0265a05d9f351b02a9ec3b497'/>
<id>3cc1116de10953f0265a05d9f351b02a9ec3b497</id>
<content type='text'>
commit b61badd20b443eabe132314669bb51a263982e5c upstream.

[  +0.000021] BUG: KASAN: slab-use-after-free in drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000027] Read of size 8 at addr ffff8881b8605f88 by task amd_pci_unplug/2147

[  +0.000023] CPU: 6 PID: 2147 Comm: amd_pci_unplug Not tainted 6.10.0+ #1
[  +0.000016] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020
[  +0.000016] Call Trace:
[  +0.000008]  &lt;TASK&gt;
[  +0.000009]  dump_stack_lvl+0x76/0xa0
[  +0.000017]  print_report+0xce/0x5f0
[  +0.000017]  ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000019]  ? srso_return_thunk+0x5/0x5f
[  +0.000015]  ? kasan_complete_mode_report_info+0x72/0x200
[  +0.000016]  ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000019]  kasan_report+0xbe/0x110
[  +0.000015]  ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000023]  __asan_report_load8_noabort+0x14/0x30
[  +0.000014]  drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000020]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? __kasan_check_write+0x14/0x30
[  +0.000016]  ? __pfx_drm_sched_entity_flush+0x10/0x10 [gpu_sched]
[  +0.000020]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? __kasan_check_write+0x14/0x30
[  +0.000013]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? enable_work+0x124/0x220
[  +0.000015]  ? __pfx_enable_work+0x10/0x10
[  +0.000013]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? free_large_kmalloc+0x85/0xf0
[  +0.000016]  drm_sched_entity_destroy+0x18/0x30 [gpu_sched]
[  +0.000020]  amdgpu_vce_sw_fini+0x55/0x170 [amdgpu]
[  +0.000735]  ? __kasan_check_read+0x11/0x20
[  +0.000016]  vce_v4_0_sw_fini+0x80/0x110 [amdgpu]
[  +0.000726]  amdgpu_device_fini_sw+0x331/0xfc0 [amdgpu]
[  +0.000679]  ? mutex_unlock+0x80/0xe0
[  +0.000017]  ? __pfx_amdgpu_device_fini_sw+0x10/0x10 [amdgpu]
[  +0.000662]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? __kasan_check_write+0x14/0x30
[  +0.000013]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? mutex_unlock+0x80/0xe0
[  +0.000016]  amdgpu_driver_release_kms+0x16/0x80 [amdgpu]
[  +0.000663]  drm_minor_release+0xc9/0x140 [drm]
[  +0.000081]  drm_release+0x1fd/0x390 [drm]
[  +0.000082]  __fput+0x36c/0xad0
[  +0.000018]  __fput_sync+0x3c/0x50
[  +0.000014]  __x64_sys_close+0x7d/0xe0
[  +0.000014]  x64_sys_call+0x1bc6/0x2680
[  +0.000014]  do_syscall_64+0x70/0x130
[  +0.000014]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? irqentry_exit_to_user_mode+0x60/0x190
[  +0.000015]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? irqentry_exit+0x43/0x50
[  +0.000012]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? exc_page_fault+0x7c/0x110
[  +0.000015]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[  +0.000014] RIP: 0033:0x7ffff7b14f67
[  +0.000013] Code: ff e8 0d 16 02 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 &lt;48&gt; 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 73 ba f7 ff
[  +0.000026] RSP: 002b:00007fffffffe378 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  +0.000019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffff7b14f67
[  +0.000014] RDX: 0000000000000000 RSI: 00007ffff7f6f47a RDI: 0000000000000003
[  +0.000014] RBP: 00007fffffffe3a0 R08: 0000555555569890 R09: 0000000000000000
[  +0.000014] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffffffe5c8
[  +0.000013] R13: 00005555555552a9 R14: 0000555555557d48 R15: 00007ffff7ffd040
[  +0.000020]  &lt;/TASK&gt;

[  +0.000016] Allocated by task 383 on cpu 7 at 26.880319s:
[  +0.000014]  kasan_save_stack+0x28/0x60
[  +0.000008]  kasan_save_track+0x18/0x70
[  +0.000007]  kasan_save_alloc_info+0x38/0x60
[  +0.000007]  __kasan_kmalloc+0xc1/0xd0
[  +0.000007]  kmalloc_trace_noprof+0x180/0x380
[  +0.000007]  drm_sched_init+0x411/0xec0 [gpu_sched]
[  +0.000012]  amdgpu_device_init+0x695f/0xa610 [amdgpu]
[  +0.000658]  amdgpu_driver_load_kms+0x1a/0x120 [amdgpu]
[  +0.000662]  amdgpu_pci_probe+0x361/0xf30 [amdgpu]
[  +0.000651]  local_pci_probe+0xe7/0x1b0
[  +0.000009]  pci_device_probe+0x248/0x890
[  +0.000008]  really_probe+0x1fd/0x950
[  +0.000008]  __driver_probe_device+0x307/0x410
[  +0.000007]  driver_probe_device+0x4e/0x150
[  +0.000007]  __driver_attach+0x223/0x510
[  +0.000006]  bus_for_each_dev+0x102/0x1a0
[  +0.000007]  driver_attach+0x3d/0x60
[  +0.000006]  bus_add_driver+0x2ac/0x5f0
[  +0.000006]  driver_register+0x13d/0x490
[  +0.000008]  __pci_register_driver+0x1ee/0x2b0
[  +0.000007]  llc_sap_close+0xb0/0x160 [llc]
[  +0.000009]  do_one_initcall+0x9c/0x3e0
[  +0.000008]  do_init_module+0x241/0x760
[  +0.000008]  load_module+0x51ac/0x6c30
[  +0.000006]  __do_sys_init_module+0x234/0x270
[  +0.000007]  __x64_sys_init_module+0x73/0xc0
[  +0.000006]  x64_sys_call+0xe3/0x2680
[  +0.000006]  do_syscall_64+0x70/0x130
[  +0.000007]  entry_SYSCALL_64_after_hwframe+0x76/0x7e

[  +0.000015] Freed by task 2147 on cpu 6 at 160.507651s:
[  +0.000013]  kasan_save_stack+0x28/0x60
[  +0.000007]  kasan_save_track+0x18/0x70
[  +0.000007]  kasan_save_free_info+0x3b/0x60
[  +0.000007]  poison_slab_object+0x115/0x1c0
[  +0.000007]  __kasan_slab_free+0x34/0x60
[  +0.000007]  kfree+0xfa/0x2f0
[  +0.000007]  drm_sched_fini+0x19d/0x410 [gpu_sched]
[  +0.000012]  amdgpu_fence_driver_sw_fini+0xc4/0x2f0 [amdgpu]
[  +0.000662]  amdgpu_device_fini_sw+0x77/0xfc0 [amdgpu]
[  +0.000653]  amdgpu_driver_release_kms+0x16/0x80 [amdgpu]
[  +0.000655]  drm_minor_release+0xc9/0x140 [drm]
[  +0.000071]  drm_release+0x1fd/0x390 [drm]
[  +0.000071]  __fput+0x36c/0xad0
[  +0.000008]  __fput_sync+0x3c/0x50
[  +0.000007]  __x64_sys_close+0x7d/0xe0
[  +0.000007]  x64_sys_call+0x1bc6/0x2680
[  +0.000007]  do_syscall_64+0x70/0x130
[  +0.000007]  entry_SYSCALL_64_after_hwframe+0x76/0x7e

[  +0.000014] The buggy address belongs to the object at ffff8881b8605f80
               which belongs to the cache kmalloc-64 of size 64
[  +0.000020] The buggy address is located 8 bytes inside of
               freed 64-byte region [ffff8881b8605f80, ffff8881b8605fc0)

[  +0.000028] The buggy address belongs to the physical page:
[  +0.000011] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b8605
[  +0.000008] anon flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)
[  +0.000007] page_type: 0xffffefff(slab)
[  +0.000009] raw: 0017ffffc0000000 ffff8881000428c0 0000000000000000 dead000000000001
[  +0.000006] raw: 0000000000000000 0000000000200020 00000001ffffefff 0000000000000000
[  +0.000006] page dumped because: kasan: bad access detected

[  +0.000012] Memory state around the buggy address:
[  +0.000011]  ffff8881b8605e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  +0.000015]  ffff8881b8605f00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[  +0.000015] &gt;ffff8881b8605f80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  +0.000013]                       ^
[  +0.000011]  ffff8881b8606000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
[  +0.000014]  ffff8881b8606080: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb
[  +0.000013] ==================================================================

The issue reproduced on VG20 during the IGT pci_unplug test.
The root cause of the issue is that the function drm_sched_fini is called before drm_sched_entity_kill.
In drm_sched_fini, the drm_sched_rq structure is freed, but this structure is later accessed by
each entity within the run queue, leading to invalid memory access.
To resolve this, the order of cleanup calls is updated:

    Before:
        amdgpu_fence_driver_sw_fini
        amdgpu_device_ip_fini

    After:
        amdgpu_device_ip_fini
        amdgpu_fence_driver_sw_fini

This updated order ensures that all entities in the IPs are cleaned up first, followed by proper
cleanup of the schedulers.

Additional Investigation:

During debugging, another issue was identified in the amdgpu_vce_sw_fini function. The vce.vcpu_bo
buffer must be freed only as the final step in the cleanup process to prevent any premature
access during earlier cleanup stages.

v2: Using Christian suggestion call drm_sched_entity_destroy before drm_sched_fini.

Cc: Christian König &lt;christian.koenig@amd.com&gt;
Cc: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Vitaly Prosyak &lt;vitaly.prosyak@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: stable@vger.kernel.org
[Minor context change fixed.]
Signed-off-by: Bin Lan &lt;bin.lan.cn@windriver.com&gt;
Signed-off-by: He Zhe &lt;zhe.he@windriver.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit b61badd20b443eabe132314669bb51a263982e5c upstream.

[  +0.000021] BUG: KASAN: slab-use-after-free in drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000027] Read of size 8 at addr ffff8881b8605f88 by task amd_pci_unplug/2147

[  +0.000023] CPU: 6 PID: 2147 Comm: amd_pci_unplug Not tainted 6.10.0+ #1
[  +0.000016] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020
[  +0.000016] Call Trace:
[  +0.000008]  &lt;TASK&gt;
[  +0.000009]  dump_stack_lvl+0x76/0xa0
[  +0.000017]  print_report+0xce/0x5f0
[  +0.000017]  ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000019]  ? srso_return_thunk+0x5/0x5f
[  +0.000015]  ? kasan_complete_mode_report_info+0x72/0x200
[  +0.000016]  ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000019]  kasan_report+0xbe/0x110
[  +0.000015]  ? drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000023]  __asan_report_load8_noabort+0x14/0x30
[  +0.000014]  drm_sched_entity_flush+0x6cb/0x7a0 [gpu_sched]
[  +0.000020]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? __kasan_check_write+0x14/0x30
[  +0.000016]  ? __pfx_drm_sched_entity_flush+0x10/0x10 [gpu_sched]
[  +0.000020]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? __kasan_check_write+0x14/0x30
[  +0.000013]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? enable_work+0x124/0x220
[  +0.000015]  ? __pfx_enable_work+0x10/0x10
[  +0.000013]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? free_large_kmalloc+0x85/0xf0
[  +0.000016]  drm_sched_entity_destroy+0x18/0x30 [gpu_sched]
[  +0.000020]  amdgpu_vce_sw_fini+0x55/0x170 [amdgpu]
[  +0.000735]  ? __kasan_check_read+0x11/0x20
[  +0.000016]  vce_v4_0_sw_fini+0x80/0x110 [amdgpu]
[  +0.000726]  amdgpu_device_fini_sw+0x331/0xfc0 [amdgpu]
[  +0.000679]  ? mutex_unlock+0x80/0xe0
[  +0.000017]  ? __pfx_amdgpu_device_fini_sw+0x10/0x10 [amdgpu]
[  +0.000662]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? __kasan_check_write+0x14/0x30
[  +0.000013]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? mutex_unlock+0x80/0xe0
[  +0.000016]  amdgpu_driver_release_kms+0x16/0x80 [amdgpu]
[  +0.000663]  drm_minor_release+0xc9/0x140 [drm]
[  +0.000081]  drm_release+0x1fd/0x390 [drm]
[  +0.000082]  __fput+0x36c/0xad0
[  +0.000018]  __fput_sync+0x3c/0x50
[  +0.000014]  __x64_sys_close+0x7d/0xe0
[  +0.000014]  x64_sys_call+0x1bc6/0x2680
[  +0.000014]  do_syscall_64+0x70/0x130
[  +0.000014]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? irqentry_exit_to_user_mode+0x60/0x190
[  +0.000015]  ? srso_return_thunk+0x5/0x5f
[  +0.000014]  ? irqentry_exit+0x43/0x50
[  +0.000012]  ? srso_return_thunk+0x5/0x5f
[  +0.000013]  ? exc_page_fault+0x7c/0x110
[  +0.000015]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
[  +0.000014] RIP: 0033:0x7ffff7b14f67
[  +0.000013] Code: ff e8 0d 16 02 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 &lt;48&gt; 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 73 ba f7 ff
[  +0.000026] RSP: 002b:00007fffffffe378 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  +0.000019] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ffff7b14f67
[  +0.000014] RDX: 0000000000000000 RSI: 00007ffff7f6f47a RDI: 0000000000000003
[  +0.000014] RBP: 00007fffffffe3a0 R08: 0000555555569890 R09: 0000000000000000
[  +0.000014] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffffffe5c8
[  +0.000013] R13: 00005555555552a9 R14: 0000555555557d48 R15: 00007ffff7ffd040
[  +0.000020]  &lt;/TASK&gt;

[  +0.000016] Allocated by task 383 on cpu 7 at 26.880319s:
[  +0.000014]  kasan_save_stack+0x28/0x60
[  +0.000008]  kasan_save_track+0x18/0x70
[  +0.000007]  kasan_save_alloc_info+0x38/0x60
[  +0.000007]  __kasan_kmalloc+0xc1/0xd0
[  +0.000007]  kmalloc_trace_noprof+0x180/0x380
[  +0.000007]  drm_sched_init+0x411/0xec0 [gpu_sched]
[  +0.000012]  amdgpu_device_init+0x695f/0xa610 [amdgpu]
[  +0.000658]  amdgpu_driver_load_kms+0x1a/0x120 [amdgpu]
[  +0.000662]  amdgpu_pci_probe+0x361/0xf30 [amdgpu]
[  +0.000651]  local_pci_probe+0xe7/0x1b0
[  +0.000009]  pci_device_probe+0x248/0x890
[  +0.000008]  really_probe+0x1fd/0x950
[  +0.000008]  __driver_probe_device+0x307/0x410
[  +0.000007]  driver_probe_device+0x4e/0x150
[  +0.000007]  __driver_attach+0x223/0x510
[  +0.000006]  bus_for_each_dev+0x102/0x1a0
[  +0.000007]  driver_attach+0x3d/0x60
[  +0.000006]  bus_add_driver+0x2ac/0x5f0
[  +0.000006]  driver_register+0x13d/0x490
[  +0.000008]  __pci_register_driver+0x1ee/0x2b0
[  +0.000007]  llc_sap_close+0xb0/0x160 [llc]
[  +0.000009]  do_one_initcall+0x9c/0x3e0
[  +0.000008]  do_init_module+0x241/0x760
[  +0.000008]  load_module+0x51ac/0x6c30
[  +0.000006]  __do_sys_init_module+0x234/0x270
[  +0.000007]  __x64_sys_init_module+0x73/0xc0
[  +0.000006]  x64_sys_call+0xe3/0x2680
[  +0.000006]  do_syscall_64+0x70/0x130
[  +0.000007]  entry_SYSCALL_64_after_hwframe+0x76/0x7e

[  +0.000015] Freed by task 2147 on cpu 6 at 160.507651s:
[  +0.000013]  kasan_save_stack+0x28/0x60
[  +0.000007]  kasan_save_track+0x18/0x70
[  +0.000007]  kasan_save_free_info+0x3b/0x60
[  +0.000007]  poison_slab_object+0x115/0x1c0
[  +0.000007]  __kasan_slab_free+0x34/0x60
[  +0.000007]  kfree+0xfa/0x2f0
[  +0.000007]  drm_sched_fini+0x19d/0x410 [gpu_sched]
[  +0.000012]  amdgpu_fence_driver_sw_fini+0xc4/0x2f0 [amdgpu]
[  +0.000662]  amdgpu_device_fini_sw+0x77/0xfc0 [amdgpu]
[  +0.000653]  amdgpu_driver_release_kms+0x16/0x80 [amdgpu]
[  +0.000655]  drm_minor_release+0xc9/0x140 [drm]
[  +0.000071]  drm_release+0x1fd/0x390 [drm]
[  +0.000071]  __fput+0x36c/0xad0
[  +0.000008]  __fput_sync+0x3c/0x50
[  +0.000007]  __x64_sys_close+0x7d/0xe0
[  +0.000007]  x64_sys_call+0x1bc6/0x2680
[  +0.000007]  do_syscall_64+0x70/0x130
[  +0.000007]  entry_SYSCALL_64_after_hwframe+0x76/0x7e

[  +0.000014] The buggy address belongs to the object at ffff8881b8605f80
               which belongs to the cache kmalloc-64 of size 64
[  +0.000020] The buggy address is located 8 bytes inside of
               freed 64-byte region [ffff8881b8605f80, ffff8881b8605fc0)

[  +0.000028] The buggy address belongs to the physical page:
[  +0.000011] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b8605
[  +0.000008] anon flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)
[  +0.000007] page_type: 0xffffefff(slab)
[  +0.000009] raw: 0017ffffc0000000 ffff8881000428c0 0000000000000000 dead000000000001
[  +0.000006] raw: 0000000000000000 0000000000200020 00000001ffffefff 0000000000000000
[  +0.000006] page dumped because: kasan: bad access detected

[  +0.000012] Memory state around the buggy address:
[  +0.000011]  ffff8881b8605e80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  +0.000015]  ffff8881b8605f00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[  +0.000015] &gt;ffff8881b8605f80: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  +0.000013]                       ^
[  +0.000011]  ffff8881b8606000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
[  +0.000014]  ffff8881b8606080: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb
[  +0.000013] ==================================================================

The issue reproduced on VG20 during the IGT pci_unplug test.
The root cause of the issue is that the function drm_sched_fini is called before drm_sched_entity_kill.
In drm_sched_fini, the drm_sched_rq structure is freed, but this structure is later accessed by
each entity within the run queue, leading to invalid memory access.
To resolve this, the order of cleanup calls is updated:

    Before:
        amdgpu_fence_driver_sw_fini
        amdgpu_device_ip_fini

    After:
        amdgpu_device_ip_fini
        amdgpu_fence_driver_sw_fini

This updated order ensures that all entities in the IPs are cleaned up first, followed by proper
cleanup of the schedulers.

Additional Investigation:

During debugging, another issue was identified in the amdgpu_vce_sw_fini function. The vce.vcpu_bo
buffer must be freed only as the final step in the cleanup process to prevent any premature
access during earlier cleanup stages.

v2: Using Christian suggestion call drm_sched_entity_destroy before drm_sched_fini.

Cc: Christian König &lt;christian.koenig@amd.com&gt;
Cc: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Vitaly Prosyak &lt;vitaly.prosyak@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: stable@vger.kernel.org
[Minor context change fixed.]
Signed-off-by: Bin Lan &lt;bin.lan.cn@windriver.com&gt;
Signed-off-by: He Zhe &lt;zhe.he@windriver.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: disable BAR resize on Dell G5 SE</title>
<updated>2025-03-13T11:51:01+00:00</updated>
<author>
<name>Alex Deucher</name>
<email>alexander.deucher@amd.com</email>
</author>
<published>2025-02-17T15:55:05+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=6486abfcf891a908351b8ab5e6c6cffe09caf8ae'/>
<id>6486abfcf891a908351b8ab5e6c6cffe09caf8ae</id>
<content type='text'>
[ Upstream commit 099bffc7cadff40bfab1517c3461c53a7a38a0d7 ]

There was a quirk added to add a workaround for a Sapphire
RX 5600 XT Pulse that didn't allow BAR resizing.  However,
the quirk caused a regression with runtime pm on Dell laptops
using those chips, rather than narrowing the scope of the
resizing quirk, add a quirk to prevent amdgpu from resizing
the BAR on those Dell platforms unless runtime pm is disabled.

v2: update commit message, add runpm check

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/1707
Fixes: 907830b0fc9e ("PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse")
Reviewed-by: Lijo Lazar &lt;lijo.lazar@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 5235053f443cef4210606e5fb71f99b915a9723d)
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 099bffc7cadff40bfab1517c3461c53a7a38a0d7 ]

There was a quirk added to add a workaround for a Sapphire
RX 5600 XT Pulse that didn't allow BAR resizing.  However,
the quirk caused a regression with runtime pm on Dell laptops
using those chips, rather than narrowing the scope of the
resizing quirk, add a quirk to prevent amdgpu from resizing
the BAR on those Dell platforms unless runtime pm is disabled.

v2: update commit message, add runpm check

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/1707
Fixes: 907830b0fc9e ("PCI: Add a REBAR size quirk for Sapphire RX 5600 XT Pulse")
Reviewed-by: Lijo Lazar &lt;lijo.lazar@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
(cherry picked from commit 5235053f443cef4210606e5fb71f99b915a9723d)
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: Check extended configuration space register when system uses large bar</title>
<updated>2025-03-13T11:51:01+00:00</updated>
<author>
<name>Ma Jun</name>
<email>Jun.Ma2@amd.com</email>
</author>
<published>2023-12-18T03:32:06+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=4be891399cdce39714445a92243fe42280239057'/>
<id>4be891399cdce39714445a92243fe42280239057</id>
<content type='text'>
[ Upstream commit e372baeb3d336b20fd9463784c577fd8824497cd ]

Some customer platforms do not enable mmconfig for various reasons,
such as bios bug, and therefore cannot access the GPU extend configuration
space through mmio.

When the system enters the d3cold state and resumes, the amdgpu driver
fails to resume because the extend configuration space registers of
GPU can't be restored. At this point, Usually we only see some failure
dmesg log printed by amdgpu driver, it is difficult to find the root
cause.

Therefor print a warnning message if the system can't access the
extended configuration space register when using large bar.

Signed-off-by: Ma Jun &lt;Jun.Ma2@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Stable-dep-of: 099bffc7cadf ("drm/amdgpu: disable BAR resize on Dell G5 SE")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit e372baeb3d336b20fd9463784c577fd8824497cd ]

Some customer platforms do not enable mmconfig for various reasons,
such as bios bug, and therefore cannot access the GPU extend configuration
space through mmio.

When the system enters the d3cold state and resumes, the amdgpu driver
fails to resume because the extend configuration space registers of
GPU can't be restored. At this point, Usually we only see some failure
dmesg log printed by amdgpu driver, it is difficult to find the root
cause.

Therefor print a warnning message if the system can't access the
extended configuration space register when using large bar.

Signed-off-by: Ma Jun &lt;Jun.Ma2@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Stable-dep-of: 099bffc7cadf ("drm/amdgpu: disable BAR resize on Dell G5 SE")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Revert "drm/amdgpu: rework resume handling for display (v2)"</title>
<updated>2025-01-23T16:16:03+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@linuxfoundation.org</email>
</author>
<published>2025-01-21T13:15:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d8ebb991790f008687d0d6af5fc20c7a68905792'/>
<id>d8ebb991790f008687d0d6af5fc20c7a68905792</id>
<content type='text'>
This reverts commit d897650c5897b3d858ca97ab77d10041e8e34231 which is
commit 73dae652dcac776296890da215ee7dec357a1032 upstream.

The original patch 73dae652dcac (drm/amdgpu: rework resume handling for
display (v2)), was only targeted at kernels 6.11 and newer.  It did not
apply cleanly to 6.12 so I backported it and it backport landed as
99a02eab8251 ("drm/amdgpu: rework resume handling for display (v2)"),
however there was a bug in the backport that was subsequently fixed in
063d380ca28e ("drm/amdgpu: fix backport of commit 73dae652dcac").  None
of this was intended for kernels older than 6.11, however the original
backport eventually landed in 6.6, 6.1, and 5.15.

Please revert the change from kernels 6.6, 6.1, and 5.15.

Link: https://lore.kernel.org/r/BL1PR12MB5144D5363FCE6F2FD3502534F7E72@BL1PR12MB5144.namprd12.prod.outlook.com
Link: https://lore.kernel.org/r/BL1PR12MB51449ADCFBF2314431F8BCFDF7132@BL1PR12MB5144.namprd12.prod.outlook.com
Reported-by: Salvatore Bonaccorso &lt;carnil@debian.org&gt;
Reported-by: Christian König &lt;christian.koenig@amd.com&gt;
Reported-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This reverts commit d897650c5897b3d858ca97ab77d10041e8e34231 which is
commit 73dae652dcac776296890da215ee7dec357a1032 upstream.

The original patch 73dae652dcac (drm/amdgpu: rework resume handling for
display (v2)), was only targeted at kernels 6.11 and newer.  It did not
apply cleanly to 6.12 so I backported it and it backport landed as
99a02eab8251 ("drm/amdgpu: rework resume handling for display (v2)"),
however there was a bug in the backport that was subsequently fixed in
063d380ca28e ("drm/amdgpu: fix backport of commit 73dae652dcac").  None
of this was intended for kernels older than 6.11, however the original
backport eventually landed in 6.6, 6.1, and 5.15.

Please revert the change from kernels 6.6, 6.1, and 5.15.

Link: https://lore.kernel.org/r/BL1PR12MB5144D5363FCE6F2FD3502534F7E72@BL1PR12MB5144.namprd12.prod.outlook.com
Link: https://lore.kernel.org/r/BL1PR12MB51449ADCFBF2314431F8BCFDF7132@BL1PR12MB5144.namprd12.prod.outlook.com
Reported-by: Salvatore Bonaccorso &lt;carnil@debian.org&gt;
Reported-by: Christian König &lt;christian.koenig@amd.com&gt;
Reported-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: rework resume handling for display (v2)</title>
<updated>2024-12-14T18:51:47+00:00</updated>
<author>
<name>Alex Deucher</name>
<email>alexander.deucher@amd.com</email>
</author>
<published>2024-11-25T18:59:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d897650c5897b3d858ca97ab77d10041e8e34231'/>
<id>d897650c5897b3d858ca97ab77d10041e8e34231</id>
<content type='text'>
commit 73dae652dcac776296890da215ee7dec357a1032 upstream.

Split resume into a 3rd step to handle displays when DCC is
enabled on DCN 4.0.1.  Move display after the buffer funcs
have been re-enabled so that the GPU will do the move and
properly set the DCC metadata for DCN.

v2: fix fence irq resume ordering

Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: stable@vger.kernel.org # 6.11.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 73dae652dcac776296890da215ee7dec357a1032 upstream.

Split resume into a 3rd step to handle displays when DCC is
enabled on DCN 4.0.1.  Move display after the buffer funcs
have been re-enabled so that the GPU will do the move and
properly set the DCC metadata for DCN.

v2: fix fence irq resume ordering

Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: stable@vger.kernel.org # 6.11.x
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: skip amdgpu_device_cache_pci_state under sriov</title>
<updated>2024-12-14T18:51:39+00:00</updated>
<author>
<name>Victor Zhao</name>
<email>Victor.Zhao@amd.com</email>
</author>
<published>2024-10-24T05:40:39+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=53b03a43a881b0ab2ec0f980c4462b43ea92e264'/>
<id>53b03a43a881b0ab2ec0f980c4462b43ea92e264</id>
<content type='text'>
[ Upstream commit afe260df55ac280cd56306248cb6d8a6b0db095c ]

Under sriov, host driver will save and restore vf pci cfg space during
reset. And during device init, under sriov, pci_restore_state happens after
fullaccess released, and it can have race condition with mmio protection
enable from host side leading to missing interrupts.

So skip amdgpu_device_cache_pci_state for sriov.

Signed-off-by: Victor Zhao &lt;Victor.Zhao@amd.com&gt;
Acked-by: Lijo Lazar &lt;lijo.lazar@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit afe260df55ac280cd56306248cb6d8a6b0db095c ]

Under sriov, host driver will save and restore vf pci cfg space during
reset. And during device init, under sriov, pci_restore_state happens after
fullaccess released, and it can have race condition with mmio protection
enable from host side leading to missing interrupts.

So skip amdgpu_device_cache_pci_state for sriov.

Signed-off-by: Victor Zhao &lt;Victor.Zhao@amd.com&gt;
Acked-by: Lijo Lazar &lt;lijo.lazar@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amd/amdgpu: Check tbo resource pointer</title>
<updated>2024-09-12T09:07:39+00:00</updated>
<author>
<name>Asad Kamal</name>
<email>asad.kamal@amd.com</email>
</author>
<published>2024-04-25T18:26:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e55e3904ffeaff81715256a711b1a61f4ad5258a'/>
<id>e55e3904ffeaff81715256a711b1a61f4ad5258a</id>
<content type='text'>
[ Upstream commit 6cd2b872643bb29bba01a8ac739138db7bd79007 ]

Validate tbo resource pointer, skip if NULL

Signed-off-by: Asad Kamal &lt;asad.kamal@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Reviewed-by: Lijo Lazar &lt;lijo.lazar@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 6cd2b872643bb29bba01a8ac739138db7bd79007 ]

Validate tbo resource pointer, skip if NULL

Signed-off-by: Asad Kamal &lt;asad.kamal@amd.com&gt;
Reviewed-by: Christian König &lt;christian.koenig@amd.com&gt;
Reviewed-by: Lijo Lazar &lt;lijo.lazar@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: Check if NBIO funcs are NULL in amdgpu_device_baco_exit</title>
<updated>2024-08-19T03:45:00+00:00</updated>
<author>
<name>Friedrich Vock</name>
<email>friedrich.vock@gmx.de</email>
</author>
<published>2024-05-14T07:06:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a8d90f00265dac3ff4b192c4e4eff85f3a06d95e'/>
<id>a8d90f00265dac3ff4b192c4e4eff85f3a06d95e</id>
<content type='text'>
[ Upstream commit 0cdb3f9740844b9d95ca413e3fcff11f81223ecf ]

The special case for VM passthrough doesn't check adev-&gt;nbio.funcs
before dereferencing it. If GPUs that don't have an NBIO block are
passed through, this leads to a NULL pointer dereference on startup.

Signed-off-by: Friedrich Vock &lt;friedrich.vock@gmx.de&gt;
Fixes: 1bece222eabe ("drm/amdgpu: Clear doorbell interrupt status for Sienna Cichlid")
Cc: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: Christian König &lt;christian.koenig@amd.com&gt;
Acked-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 0cdb3f9740844b9d95ca413e3fcff11f81223ecf ]

The special case for VM passthrough doesn't check adev-&gt;nbio.funcs
before dereferencing it. If GPUs that don't have an NBIO block are
passed through, this leads to a NULL pointer dereference on startup.

Signed-off-by: Friedrich Vock &lt;friedrich.vock@gmx.de&gt;
Fixes: 1bece222eabe ("drm/amdgpu: Clear doorbell interrupt status for Sienna Cichlid")
Cc: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Cc: Christian König &lt;christian.koenig@amd.com&gt;
Acked-by: Christian König &lt;christian.koenig@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Revert "drm/amdgpu: init iommu after amdkfd device init"</title>
<updated>2024-06-16T11:39:54+00:00</updated>
<author>
<name>Armin Wolf</name>
<email>W_Armin@gmx.de</email>
</author>
<published>2024-05-23T17:30:31+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=7f8c1cbb7819e32ff52fd8809026f9742e28bac3'/>
<id>7f8c1cbb7819e32ff52fd8809026f9742e28bac3</id>
<content type='text'>
This reverts commit 56b522f4668167096a50c39446d6263c96219f5f.

A user reported that this commit breaks the integrated gpu of his
notebook, causing a black screen. He was able to bisect the problematic
commit and verified that by reverting it the notebook works again.
He also confirmed that kernel 6.8.1 also works on his device, so the
upstream commit itself seems to be ok.

An amdgpu developer (Alex Deucher) confirmed that this patch should
have never been ported to 5.15 in the first place, so revert this
commit from the 5.15 stable series.

Reported-by: Barry Kauler &lt;bkauler@gmail.com&gt;
Signed-off-by: Armin Wolf &lt;W_Armin@gmx.de&gt;
Link: https://lore.kernel.org/r/20240523173031.4212-1-W_Armin@gmx.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This reverts commit 56b522f4668167096a50c39446d6263c96219f5f.

A user reported that this commit breaks the integrated gpu of his
notebook, causing a black screen. He was able to bisect the problematic
commit and verified that by reverting it the notebook works again.
He also confirmed that kernel 6.8.1 also works on his device, so the
upstream commit itself seems to be ok.

An amdgpu developer (Alex Deucher) confirmed that this patch should
have never been ported to 5.15 in the first place, so revert this
commit from the 5.15 stable series.

Reported-by: Barry Kauler &lt;bkauler@gmail.com&gt;
Signed-off-by: Armin Wolf &lt;W_Armin@gmx.de&gt;
Link: https://lore.kernel.org/r/20240523173031.4212-1-W_Armin@gmx.de
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>drm/amdgpu: init iommu after amdkfd device init</title>
<updated>2024-03-01T12:21:52+00:00</updated>
<author>
<name>Yifan Zhang</name>
<email>yifan1.zhang@amd.com</email>
</author>
<published>2021-09-28T07:42:35+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=56b522f4668167096a50c39446d6263c96219f5f'/>
<id>56b522f4668167096a50c39446d6263c96219f5f</id>
<content type='text'>
[ Upstream commit 286826d7d976e7646b09149d9bc2899d74ff962b ]

This patch is to fix clinfo failure in Raven/Picasso:

Number of platforms: 1
  Platform Profile: FULL_PROFILE
  Platform Version: OpenCL 2.2 AMD-APP (3364.0)
  Platform Name: AMD Accelerated Parallel Processing
  Platform Vendor: Advanced Micro Devices, Inc.
  Platform Extensions: cl_khr_icd cl_amd_event_callback

  Platform Name: AMD Accelerated Parallel Processing Number of devices: 0

Signed-off-by: Yifan Zhang &lt;yifan1.zhang@amd.com&gt;
Reviewed-by: James Zhu &lt;James.Zhu@amd.com&gt;
Tested-by: James Zhu &lt;James.Zhu@amd.com&gt;
Acked-by: Felix Kuehling &lt;Felix.Kuehling@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
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[ Upstream commit 286826d7d976e7646b09149d9bc2899d74ff962b ]

This patch is to fix clinfo failure in Raven/Picasso:

Number of platforms: 1
  Platform Profile: FULL_PROFILE
  Platform Version: OpenCL 2.2 AMD-APP (3364.0)
  Platform Name: AMD Accelerated Parallel Processing
  Platform Vendor: Advanced Micro Devices, Inc.
  Platform Extensions: cl_khr_icd cl_amd_event_callback

  Platform Name: AMD Accelerated Parallel Processing Number of devices: 0

Signed-off-by: Yifan Zhang &lt;yifan1.zhang@amd.com&gt;
Reviewed-by: James Zhu &lt;James.Zhu@amd.com&gt;
Tested-by: James Zhu &lt;James.Zhu@amd.com&gt;
Acked-by: Felix Kuehling &lt;Felix.Kuehling@amd.com&gt;
Signed-off-by: Alex Deucher &lt;alexander.deucher@amd.com&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
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