==================================================================
BUG: KASAN: slab-use-after-free in memcmp+0x1b5/0x1c0 lib/string.c:681
Read of size 8 at addr ffff88801e8e2600 by task syz-executor.0/23812
CPU: 0 PID: 23812 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-03967-gbd6c11bc43c4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
memcmp+0x1b5/0x1c0 lib/string.c:681
memcmp include/linux/fortify-string.h:728 [inline]
compare_mount_options fs/ceph/super.c:622 [inline]
ceph_compare_super+0x11a/0x8d0 fs/ceph/super.c:1147
sget_fc+0x582/0x9b0 fs/super.c:778
ceph_get_tree+0x6ea/0x1910 fs/ceph/super.c:1232
vfs_get_tree+0x8c/0x370 fs/super.c:1711
vfs_cmd_create+0x11f/0x2f0 fs/fsopen.c:230
vfs_fsconfig_locked fs/fsopen.c:294 [inline]
__do_sys_fsconfig+0x832/0xb90 fs/fsopen.c:475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f67d187cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f67d25ae0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f67d199bf80 RCX: 00007f67d187cae9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00007f67d18c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f67d199bf80 R15: 00007ffe89244c08
Allocated by task 23795:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:582 [inline]
kzalloc include/linux/slab.h:703 [inline]
ceph_init_fs_context+0xc8/0x530 fs/ceph/super.c:1333
alloc_fs_context+0x56c/0x9f0 fs/fs_context.c:294
__do_sys_fsopen fs/fsopen.c:137 [inline]
__se_sys_fsopen fs/fsopen.c:115 [inline]
__x64_sys_fsopen+0xeb/0x230 fs/fsopen.c:115
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 23795:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15e/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1792 [inline]
slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1818
slab_free mm/slub.c:3801 [inline]
__kmem_cache_free+0xb8/0x2f0 mm/slub.c:3814
destroy_mount_options fs/ceph/super.c:599 [inline]
destroy_mount_options+0xe9/0x140 fs/ceph/super.c:588
destroy_fs_client+0x1b6/0x2b0 fs/ceph/super.c:860
deactivate_locked_super+0xa0/0x2d0 fs/super.c:454
ceph_get_tree+0x1270/0x1910 fs/ceph/super.c:1267
vfs_get_tree+0x8c/0x370 fs/super.c:1711
vfs_cmd_create+0x11f/0x2f0 fs/fsopen.c:230
vfs_fsconfig_locked fs/fsopen.c:294 [inline]
__do_sys_fsconfig+0x832/0xb90 fs/fsopen.c:475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372
cfg80211_update_known_bss+0x821/0xa80 net/wireless/scan.c:1744
__cfg80211_bss_update+0x1ba/0x2540 net/wireless/scan.c:1788
cfg80211_inform_single_bss_frame_data+0x7e7/0xf30 net/wireless/scan.c:2881
cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2912
ieee80211_bss_info_update+0x37b/0x9a0 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x195f/0x2ee0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0xa1f/0xd40 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Second to last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372
cfg80211_update_known_bss+0x821/0xa80 net/wireless/scan.c:1744
__cfg80211_bss_update+0x1ba/0x2540 net/wireless/scan.c:1788
cfg80211_inform_single_bss_frame_data+0x7e7/0xf30 net/wireless/scan.c:2881
cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2912
ieee80211_bss_info_update+0x37b/0x9a0 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x195f/0x2ee0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0xa1f/0xd40 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
The buggy address belongs to the object at ffff88801e8e2600
which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
freed 96-byte region [ffff88801e8e2600, ffff88801e8e2660)
The buggy address belongs to the physical page:
page:ffffea00007a3880 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e8e2
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000200 ffff888012841780 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 5056, tgid 5056 (syz-executor.1), ts 397287163892, free_ts 397276028737
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570
prep_new_page mm/page_alloc.c:1577 [inline]
get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477
alloc_pages+0x1a9/0x270 mm/mempolicy.c:2298
alloc_slab_page mm/slub.c:1862 [inline]
allocate_slab+0x24e/0x380 mm/slub.c:2009
new_slab mm/slub.c:2062 [inline]
___slab_alloc+0x8bc/0x1570 mm/slub.c:3215
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314
__slab_alloc_node mm/slub.c:3367 [inline]
slab_alloc_node mm/slub.c:3460 [inline]
__kmem_cache_alloc_node+0x137/0x350 mm/slub.c:3509
__do_kmalloc_node mm/slab_common.c:984 [inline]
__kmalloc+0x4c/0x100 mm/slab_common.c:998
kmalloc include/linux/slab.h:586 [inline]
kzalloc include/linux/slab.h:703 [inline]
tomoyo_encode2+0x100/0x3d0 security/tomoyo/realpath.c:45
tomoyo_encode+0x29/0x50 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x196/0x710 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x271/0x450 security/tomoyo/file.c:822
tomoyo_path_unlink+0x92/0xd0 security/tomoyo/tomoyo.c:161
security_path_unlink+0xf9/0x160 security/security.c:1742
do_unlinkat+0x375/0x6d0 fs/namei.c:4395
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1161 [inline]
free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443
tlb_batch_list_free mm/mmu_gather.c:113 [inline]
tlb_finish_mmu+0x1a7/0x7e0 mm/mmu_gather.c:394
exit_mmap+0x2db/0x960 mm/mmap.c:3215
__mmput+0x12a/0x4d0 kernel/fork.c:1356
mmput+0x62/0x70 kernel/fork.c:1378
exit_mm kernel/exit.c:567 [inline]
do_exit+0x9b4/0x2a20 kernel/exit.c:861
do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Memory state around the buggy address:
ffff88801e8e2500: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff88801e8e2580: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff88801e8e2600: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
^
ffff88801e8e2680: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff88801e8e2700: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in memcmp+0x192/0x1c0 lib/string.c:692
Read of size 1 at addr ffff88801e8e2600 by task syz-executor.0/23812
CPU: 0 PID: 23812 Comm: syz-executor.0 Tainted: G B 6.5.0-syzkaller-03967-gbd6c11bc43c4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
memcmp+0x192/0x1c0 lib/string.c:692
memcmp include/linux/fortify-string.h:728 [inline]
compare_mount_options fs/ceph/super.c:622 [inline]
ceph_compare_super+0x11a/0x8d0 fs/ceph/super.c:1147
sget_fc+0x582/0x9b0 fs/super.c:778
ceph_get_tree+0x6ea/0x1910 fs/ceph/super.c:1232
vfs_get_tree+0x8c/0x370 fs/super.c:1711
vfs_cmd_create+0x11f/0x2f0 fs/fsopen.c:230
vfs_fsconfig_locked fs/fsopen.c:294 [inline]
__do_sys_fsconfig+0x832/0xb90 fs/fsopen.c:475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f67d187cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f67d25ae0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f67d199bf80 RCX: 00007f67d187cae9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004
RBP: 00007f67d18c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f67d199bf80 R15: 00007ffe89244c08
Allocated by task 23795:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:582 [inline]
kzalloc include/linux/slab.h:703 [inline]
ceph_init_fs_context+0xc8/0x530 fs/ceph/super.c:1333
alloc_fs_context+0x56c/0x9f0 fs/fs_context.c:294
__do_sys_fsopen fs/fsopen.c:137 [inline]
__se_sys_fsopen fs/fsopen.c:115 [inline]
__x64_sys_fsopen+0xeb/0x230 fs/fsopen.c:115
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 23795:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x15e/0x1b0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1792 [inline]
slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1818
slab_free mm/slub.c:3801 [inline]
__kmem_cache_free+0xb8/0x2f0 mm/slub.c:3814
destroy_mount_options fs/ceph/super.c:599 [inline]
destroy_mount_options+0xe9/0x140 fs/ceph/super.c:588
destroy_fs_client+0x1b6/0x2b0 fs/ceph/super.c:860
deactivate_locked_super+0xa0/0x2d0 fs/super.c:454
ceph_get_tree+0x1270/0x1910 fs/ceph/super.c:1267
vfs_get_tree+0x8c/0x370 fs/super.c:1711
vfs_cmd_create+0x11f/0x2f0 fs/fsopen.c:230
vfs_fsconfig_locked fs/fsopen.c:294 [inline]
__do_sys_fsconfig+0x832/0xb90 fs/fsopen.c:475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372
cfg80211_update_known_bss+0x821/0xa80 net/wireless/scan.c:1744
__cfg80211_bss_update+0x1ba/0x2540 net/wireless/scan.c:1788
cfg80211_inform_single_bss_frame_data+0x7e7/0xf30 net/wireless/scan.c:2881
cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2912
ieee80211_bss_info_update+0x37b/0x9a0 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x195f/0x2ee0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0xa1f/0xd40 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Second to last potentially related work creation:
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492
kvfree_call_rcu+0x70/0xbe0 kernel/rcu/tree.c:3372
cfg80211_update_known_bss+0x821/0xa80 net/wireless/scan.c:1744
__cfg80211_bss_update+0x1ba/0x2540 net/wireless/scan.c:1788
cfg80211_inform_single_bss_frame_data+0x7e7/0xf30 net/wireless/scan.c:2881
cfg80211_inform_bss_frame_data+0xbf/0x290 net/wireless/scan.c:2912
ieee80211_bss_info_update+0x37b/0x9a0 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x195f/0x2ee0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0xa1f/0xd40 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
The buggy address belongs to the object at ffff88801e8e2600
which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
freed 96-byte region [ffff88801e8e2600, ffff88801e8e2660)
The buggy address belongs to the physical page:
page:ffffea00007a3880 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e8e2
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000200 ffff888012841780 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 5056, tgid 5056 (syz-executor.1), ts 397287163892, free_ts 397276028737
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570
prep_new_page mm/page_alloc.c:1577 [inline]
get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477
alloc_pages+0x1a9/0x270 mm/mempolicy.c:2298
alloc_slab_page mm/slub.c:1862 [inline]
allocate_slab+0x24e/0x380 mm/slub.c:2009
new_slab mm/slub.c:2062 [inline]
___slab_alloc+0x8bc/0x1570 mm/slub.c:3215
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314
__slab_alloc_node mm/slub.c:3367 [inline]
slab_alloc_node mm/slub.c:3460 [inline]
__kmem_cache_alloc_node+0x137/0x350 mm/slub.c:3509
__do_kmalloc_node mm/slab_common.c:984 [inline]
__kmalloc+0x4c/0x100 mm/slab_common.c:998
kmalloc include/linux/slab.h:586 [inline]
kzalloc include/linux/slab.h:703 [inline]
tomoyo_encode2+0x100/0x3d0 security/tomoyo/realpath.c:45
tomoyo_encode+0x29/0x50 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x196/0x710 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x271/0x450 security/tomoyo/file.c:822
tomoyo_path_unlink+0x92/0xd0 security/tomoyo/tomoyo.c:161
security_path_unlink+0xf9/0x160 security/security.c:1742
do_unlinkat+0x375/0x6d0 fs/namei.c:4395
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1161 [inline]
free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443
tlb_batch_list_free mm/mmu_gather.c:113 [inline]
tlb_finish_mmu+0x1a7/0x7e0 mm/mmu_gather.c:394
exit_mmap+0x2db/0x960 mm/mmap.c:3215
__mmput+0x12a/0x4d0 kernel/fork.c:1356
mmput+0x62/0x70 kernel/fork.c:1378
exit_mm kernel/exit.c:567 [inline]
do_exit+0x9b4/0x2a20 kernel/exit.c:861
do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Memory state around the buggy address:
ffff88801e8e2500: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff88801e8e2580: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff88801e8e2600: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
^
ffff88801e8e2680: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
ffff88801e8e2700: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
==================================================================
ceph: No mds server is up or the cluster is laggy