[Bug 198985] BUG: KASAN: use-after-free in amdgpu_job_free_cb+0x26/0xb0 [amdgpu]

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=198985

--- Comment #4 from Fredrik (fredrik@planet-express.se) ---
I've applied the patch you mentioned above. Is this related or should I open a
new bug?: 

[56091.713961]
==================================================================
[56091.714058] BUG: KASAN: use-after-free in
dc_create_stream_for_sink+0x73/0x440 [amdgpu]
[56091.714062] Read of size 8 at addr ffff88092d66fc68 by task X/490

[56091.714066] CPU: 11 PID: 490 Comm: X Not tainted 4.15.9 #21
[56091.714068] Hardware name: System manufacturer System Product Name/PRIME
X370-PRO, BIOS 3803 01/22/2018
[56091.714069] Call Trace:
[56091.714075]  dump_stack+0x46/0x5a
[56091.714080]  print_address_description+0x82/0x2c0
[56091.714084]  kasan_report+0x289/0x380
[56091.714175]  ? dc_create_stream_for_sink+0x73/0x440 [amdgpu]
[56091.714265]  dc_create_stream_for_sink+0x73/0x440 [amdgpu]
[56091.714357]  create_stream_for_sink+0xe5/0x7c0 [amdgpu]
[56091.714451]  ? fill_stream_properties_from_drm_display_mode+0x400/0x400
[amdgpu]
[56091.714454]  ? kasan_kmalloc+0xb0/0xf0
[56091.714458]  ? drm_legacy_ioremapfree+0xd0/0xd0
[56091.714461]  ? drm_atomic_commit+0x2d/0xb0
[56091.714465]  ? drm_atomic_helper_legacy_gamma_set+0x190/0x1e0
[56091.714469]  ? drm_mode_gamma_set_ioctl+0x28a/0x320
[56091.714473]  ? drm_atomic_get_connector_state+0xaa/0x2a0
[56091.714565]  dm_update_crtcs_state+0x1d2/0x5e0 [amdgpu]
[56091.714569]  ? drm_atomic_get_crtc_state+0x76/0x1d0
[56091.714660]  ? dc_resource_state_copy_construct+0x199/0x1d0 [amdgpu]
[56091.714759]  amdgpu_dm_atomic_check+0x24b/0x6d0 [amdgpu]
[56091.714764]  ? __radix_tree_replace+0x95/0x150
[56091.714766]  ? node_tag_clear+0x66/0xb0
[56091.714859]  ? dm_update_planes_state.part.28+0x1150/0x1150 [amdgpu]
[56091.714862]  ? __mutex_lock_interruptible_slowpath+0x1/0x10
[56091.714865]  ? __fprop_inc_percpu_max+0x180/0x180
[56091.714869]  drm_atomic_check_only+0x6b8/0x940
[56091.714872]  ? drm_legacy_ioremapfree+0xd0/0xd0
[56091.714876]  ? drm_atomic_set_crtc_for_connector+0x1d0/0x1d0
[56091.714878]  ? drm_mode_object_get+0x51/0x70
[56091.714882]  drm_atomic_commit+0x2d/0xb0
[56091.714886]  drm_atomic_helper_legacy_gamma_set+0x190/0x1e0
[56091.714889]  ? drm_atomic_helper_update_plane+0x1a0/0x1a0
[56091.714892]  drm_mode_gamma_set_ioctl+0x28a/0x320
[56091.714896]  ? drm_crtc_enable_color_mgmt+0x140/0x140
[56091.714899]  ? drm_legacy_ioremapfree+0xd0/0xd0
[56091.714902]  ? drm_lease_owner+0x15/0x30
[56091.714905]  ? drm_crtc_enable_color_mgmt+0x140/0x140
[56091.714908]  drm_ioctl_kernel+0xaf/0x120
[56091.714911]  drm_ioctl+0x4bf/0x570
[56091.714915]  ? drm_crtc_enable_color_mgmt+0x140/0x140
[56091.714917]  ? drm_ioctl_kernel+0x120/0x120
[56091.714922]  ? set_current_blocked+0x20/0x20
[56091.714924]  ? get_signal+0x5c8/0x760
[56091.714927]  ? memset+0x2d/0x50
[56091.714930]  ? fpstate_init+0x6c/0x80
[56091.714933]  ? fpu__initialize+0x1c/0x50
[56091.714936]  ? __fpu__restore_sig+0x327/0x510
[56091.714940]  do_vfs_ioctl+0x155/0x920
[56091.714943]  ? ioctl_preallocate+0x140/0x140
[56091.714945]  ? recalc_sigpending_tsk+0x95/0xa0
[56091.714948]  ? recalc_sigpending+0x12/0x20
[56091.714950]  ? do_sigaltstack+0x1d0/0x270
[56091.714955]  ? SyS_futex+0x1be/0x250
[56091.714959]  ? __rcu_read_unlock+0x76/0xa0
[56091.714961]  ? __fget+0xc2/0x100
[56091.714964]  SyS_ioctl+0x47/0x90
[56091.714967]  ? do_vfs_ioctl+0x920/0x920
[56091.714970]  do_syscall_64+0xf3/0x2b0
[56091.714974]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[56091.714976] RIP: 0033:0x7f3385a95397
[56091.714978] RSP: 002b:00007ffe5b715608 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[56091.714982] RAX: ffffffffffffffda RBX: 000055cc1d92d2a0 RCX:
00007f3385a95397
[56091.714984] RDX: 00007ffe5b715640 RSI: 00000000c02064a5 RDI:
000000000000000c
[56091.714985] RBP: 00007ffe5b715640 R08: 000055cc1d92d960 R09:
000055cc1d92db60
[56091.714987] R10: 0000000000000001 R11: 0000000000000246 R12:
00000000c02064a5
[56091.714989] R13: 000000000000000c R14: 000055cc1d92b130 R15:
000055cc1d92d760

[56091.714992] Allocated by task 490:
[56091.714996]  kasan_kmalloc+0xb0/0xf0
[56091.715086]  dc_sink_create+0x41/0x140 [amdgpu]
[56091.715178]  create_stream_for_sink+0x6a7/0x7c0 [amdgpu]
[56091.715270]  dm_update_crtcs_state+0x1d2/0x5e0 [amdgpu]
[56091.715362]  amdgpu_dm_atomic_check+0x24b/0x6d0 [amdgpu]
[56091.715365]  drm_atomic_check_only+0x6b8/0x940
[56091.715367]  drm_atomic_commit+0x2d/0xb0
[56091.715370]  drm_atomic_connector_commit_dpms+0x1ea/0x210
[56091.715373]  drm_mode_obj_set_property_ioctl+0x2fb/0x410
[56091.715376]  drm_mode_connector_property_set_ioctl+0xb5/0xf0
[56091.715378]  drm_ioctl_kernel+0xaf/0x120
[56091.715381]  drm_ioctl+0x4bf/0x570
[56091.715383]  do_vfs_ioctl+0x155/0x920
[56091.715385]  SyS_ioctl+0x47/0x90
[56091.715387]  do_syscall_64+0xf3/0x2b0
[56091.715390]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2

[56091.715392] Freed by task 112:
[56091.715395]  kasan_slab_free+0x7c/0xe0
[56091.715397]  kfree+0x91/0x1a0
[56091.715487]  dc_link_detect+0x21a/0x1030 [amdgpu]
[56091.715579]  handle_hpd_irq+0x65/0xd0 [amdgpu]
[56091.715671]  dm_irq_work_func+0x86/0xa0 [amdgpu]
[56091.715674]  process_one_work+0x3cd/0x660
[56091.715676]  worker_thread+0x81/0x7b0
[56091.715678]  kthread+0x1ae/0x1d0
[56091.715680]  ret_from_fork+0x22/0x40

[56091.715683] The buggy address belongs to the object at ffff88092d66f980
                which belongs to the cache kmalloc-1024 of size 1024
[56091.715687] The buggy address is located 744 bytes inside of
                1024-byte region [ffff88092d66f980, ffff88092d66fd80)
[56091.715688] The buggy address belongs to the page:
[56091.715691] page:ffffea0024b59a00 count:1 mapcount:0
mapping:0000000000000000 index:0x0 compound_mapcount: 0
[56091.715696] flags: 0x8000000000008100(slab|head)
[56091.715701] raw: 8000000000008100 0000000000000000 0000000000000000
00000001001c001c
[56091.715704] raw: dead000000000100 dead000000000200 ffff880f98c03180
0000000000000000
[56091.715707] page dumped because: kasan: bad access detected

[56091.715709] Memory state around the buggy address:
[56091.715714]  ffff88092d66fb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.715717]  ffff88092d66fb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.715720] >ffff88092d66fc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.715721]                                                           ^
[56091.715724]  ffff88092d66fc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.715727]  ffff88092d66fd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.715729]
==================================================================
[56091.715730] Disabling lock debugging due to kernel taint
[56091.715777]
==================================================================
[56091.715780] BUG: KASAN: double-free or invalid-free in           (null)

[56091.715792] CPU: 11 PID: 490 Comm: X Tainted: G    B            4.15.9 #21
[56091.715795] Hardware name: System manufacturer System Product Name/PRIME
X370-PRO, BIOS 3803 01/22/2018
[56091.715800] Call Trace:
[56091.715806]  dump_stack+0x46/0x5a
[56091.715812]  print_address_description+0x82/0x2c0
[56091.715818]  kasan_report_double_free+0x60/0xa0
[56091.715824]  kasan_slab_free+0xb5/0xe0
[56091.715919]  ? dc_stream_release+0x3c/0x90 [amdgpu]
[56091.715925]  kfree+0x91/0x1a0
[56091.716021]  dc_stream_release+0x3c/0x90 [amdgpu]
[56091.716119]  dm_update_crtcs_state+0x23d/0x5e0 [amdgpu]
[56091.716126]  ? drm_atomic_get_crtc_state+0x76/0x1d0
[56091.716221]  ? dc_resource_state_copy_construct+0x199/0x1d0 [amdgpu]
[56091.716318]  amdgpu_dm_atomic_check+0x24b/0x6d0 [amdgpu]
[56091.716325]  ? __radix_tree_replace+0x95/0x150
[56091.716330]  ? node_tag_clear+0x66/0xb0
[56091.716427]  ? dm_update_planes_state.part.28+0x1150/0x1150 [amdgpu]
[56091.716433]  ? __mutex_lock_interruptible_slowpath+0x1/0x10
[56091.716438]  ? __fprop_inc_percpu_max+0x180/0x180
[56091.716444]  drm_atomic_check_only+0x6b8/0x940
[56091.716450]  ? drm_legacy_ioremapfree+0xd0/0xd0
[56091.716457]  ? drm_atomic_set_crtc_for_connector+0x1d0/0x1d0
[56091.716463]  ? drm_mode_object_get+0x51/0x70
[56091.716469]  drm_atomic_commit+0x2d/0xb0
[56091.716476]  drm_atomic_helper_legacy_gamma_set+0x190/0x1e0
[56091.716482]  ? drm_atomic_helper_update_plane+0x1a0/0x1a0
[56091.716488]  drm_mode_gamma_set_ioctl+0x28a/0x320
[56091.716495]  ? drm_crtc_enable_color_mgmt+0x140/0x140
[56091.716501]  ? drm_legacy_ioremapfree+0xd0/0xd0
[56091.716507]  ? drm_lease_owner+0x15/0x30
[56091.716513]  ? drm_crtc_enable_color_mgmt+0x140/0x140
[56091.716518]  drm_ioctl_kernel+0xaf/0x120
[56091.716525]  drm_ioctl+0x4bf/0x570
[56091.716529]  ? drm_crtc_enable_color_mgmt+0x140/0x140
[56091.716532]  ? drm_ioctl_kernel+0x120/0x120
[56091.716535]  ? set_current_blocked+0x20/0x20
[56091.716538]  ? get_signal+0x5c8/0x760
[56091.716541]  ? memset+0x2d/0x50
[56091.716544]  ? fpstate_init+0x6c/0x80
[56091.716547]  ? fpu__initialize+0x1c/0x50
[56091.716550]  ? __fpu__restore_sig+0x327/0x510
[56091.716553]  do_vfs_ioctl+0x155/0x920
[56091.716556]  ? ioctl_preallocate+0x140/0x140
[56091.716559]  ? recalc_sigpending_tsk+0x95/0xa0
[56091.716561]  ? recalc_sigpending+0x12/0x20
[56091.716564]  ? do_sigaltstack+0x1d0/0x270
[56091.716568]  ? SyS_futex+0x1be/0x250
[56091.716571]  ? __rcu_read_unlock+0x76/0xa0
[56091.716573]  ? __fget+0xc2/0x100
[56091.716576]  SyS_ioctl+0x47/0x90
[56091.716579]  ? do_vfs_ioctl+0x920/0x920
[56091.716581]  do_syscall_64+0xf3/0x2b0
[56091.716585]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[56091.716587] RIP: 0033:0x7f3385a95397
[56091.716589] RSP: 002b:00007ffe5b715608 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[56091.716592] RAX: ffffffffffffffda RBX: 000055cc1d92d2a0 RCX:
00007f3385a95397
[56091.716594] RDX: 00007ffe5b715640 RSI: 00000000c02064a5 RDI:
000000000000000c
[56091.716596] RBP: 00007ffe5b715640 R08: 000055cc1d92d960 R09:
000055cc1d92db60
[56091.716598] R10: 0000000000000001 R11: 0000000000000246 R12:
00000000c02064a5
[56091.716599] R13: 000000000000000c R14: 000055cc1d92b130 R15:
000055cc1d92d760

[56091.716602] Allocated by task 490:
[56091.716606]  kasan_kmalloc+0xb0/0xf0
[56091.716698]  dc_sink_create+0x41/0x140 [amdgpu]
[56091.716794]  create_stream_for_sink+0x6a7/0x7c0 [amdgpu]
[56091.716891]  dm_update_crtcs_state+0x1d2/0x5e0 [amdgpu]
[56091.716986]  amdgpu_dm_atomic_check+0x24b/0x6d0 [amdgpu]
[56091.716990]  drm_atomic_check_only+0x6b8/0x940
[56091.716993]  drm_atomic_commit+0x2d/0xb0
[56091.716996]  drm_atomic_connector_commit_dpms+0x1ea/0x210
[56091.716999]  drm_mode_obj_set_property_ioctl+0x2fb/0x410
[56091.717001]  drm_mode_connector_property_set_ioctl+0xb5/0xf0
[56091.717004]  drm_ioctl_kernel+0xaf/0x120
[56091.717007]  drm_ioctl+0x4bf/0x570
[56091.717009]  do_vfs_ioctl+0x155/0x920
[56091.717011]  SyS_ioctl+0x47/0x90
[56091.717013]  do_syscall_64+0xf3/0x2b0
[56091.717016]  entry_SYSCALL_64_after_hwframe+0x3d/0xa2

[56091.717018] Freed by task 112:
[56091.717021]  kasan_slab_free+0x7c/0xe0
[56091.717023]  kfree+0x91/0x1a0
[56091.717118]  dc_link_detect+0x21a/0x1030 [amdgpu]
[56091.717209]  handle_hpd_irq+0x65/0xd0 [amdgpu]
[56091.717297]  dm_irq_work_func+0x86/0xa0 [amdgpu]
[56091.717299]  process_one_work+0x3cd/0x660
[56091.717302]  worker_thread+0x81/0x7b0
[56091.717303]  kthread+0x1ae/0x1d0
[56091.717306]  ret_from_fork+0x22/0x40

[56091.717308] The buggy address belongs to the object at ffff88092d66f980
                which belongs to the cache kmalloc-1024 of size 1024
[56091.717312] The buggy address is located 0 bytes inside of
                1024-byte region [ffff88092d66f980, ffff88092d66fd80)
[56091.717313] The buggy address belongs to the page:
[56091.717315] page:ffffea0024b59a00 count:1 mapcount:0
mapping:0000000000000000 index:0x0 compound_mapcount: 0
[56091.717319] flags: 0x8000000000008100(slab|head)
[56091.717323] raw: 8000000000008100 0000000000000000 0000000000000000
00000001001c001c
[56091.717327] raw: dead000000000100 dead000000000200 ffff880f98c03180
0000000000000000
[56091.717328] page dumped because: kasan: bad access detected

[56091.717330] Memory state around the buggy address:
[56091.717332]  ffff88092d66f880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.717335]  ffff88092d66f900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
fc
[56091.717337] >ffff88092d66f980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.717338]                    ^
[56091.717341]  ffff88092d66fa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.717343]  ffff88092d66fa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fb
[56091.717344]
==================================================================

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