KASAN: use-after-free Read in incfs_free_mount_info

Status: premoderation: reported on 2026/01/18 22:40
Reported-by: syzbot+5184cd9aebccb43b2981@syzkaller.appspotmail.com
First crash: 200d, last: 13h25m
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 KASAN: use-after-free Read in incfs_free_mount_info 19 714 6h07m 200d 0/2 premoderation: reported on 2026/01/19 00:38
android-5-15 KASAN: use-after-free Read in incfs_free_mount_info 19 205 16h58m 194d 0/2 premoderation: reported on 2026/01/25 07:55

Sample crash report:
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73ece26038 R14: 00007f73ece25fa0 R15: 00007ffe87a89fd8
 </TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: use-after-free in fast_dput+0x1e0/0x290 fs/dcache.c:778
Read of size 4 at addr ffff88811466c110 by task syz.4.561/2213

CPU: 1 PID: 2213 Comm: syz.4.561 Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 fast_dput+0x1e0/0x290 fs/dcache.c:778
 dput+0x21/0x80 fs/dcache.c:905
 incfs_free_mount_info+0x60/0x200 fs/incfs/data_mgmt.c:166
 incfs_kill_sb+0x1af/0x210 fs/incfs/vfs.c:2003
 deactivate_locked_super+0xb5/0x120 fs/super.c:336
 deactivate_super+0xaf/0xe0 fs/super.c:367
 cleanup_mnt+0x45e/0x4e0 fs/namespace.c:1192
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1199
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x167c/0x1700 kernel/signal.c:2895
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:288
RIP: 0033:0x7f73ecb9e0d9
Code: Unable to access opcode bytes at 0x7f73ecb9e0af.
RSP: 002b:00007f73edb46fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f73ece25fa0 RCX: 00007f73ecb9e0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f73ecc35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73ece26038 R14: 00007f73ece25fa0 R15: 00007ffe87a89fd8
 </TASK>

Allocated by task 4058:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x72/0x80 mm/kasan/common.c:334
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3382 [inline]
 slab_alloc mm/slub.c:3392 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3399 [inline]
 kmem_cache_alloc_lru+0x104/0x280 mm/slub.c:3415
 __d_alloc+0x34/0x6d0 fs/dcache.c:1774
 d_alloc fs/dcache.c:1854 [inline]
 d_alloc_parallel+0xe2/0x1280 fs/dcache.c:2647
 __lookup_slow+0x14f/0x410 fs/namei.c:1682
 lookup_one_len+0x19d/0x2e0 fs/namei.c:2747
 incfs_lookup_dentry+0x60/0xb0 fs/incfs/data_mgmt.c:210
 open_or_create_special_dir+0x4c/0x1f0 fs/incfs/vfs.c:475
 incfs_mount_fs+0x42f/0x890 fs/incfs/vfs.c:1890
 legacy_get_tree+0xfe/0x1a0 fs/fs_context.c:632
 vfs_get_tree+0x9a/0x270 fs/super.c:1578
 do_new_mount+0x251/0xb40 fs/namespace.c:3081
 path_mount+0x640/0xfd0 fs/namespace.c:3411
 do_mount fs/namespace.c:3424 [inline]
 __do_sys_mount fs/namespace.c:3632 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3609
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3609
 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 13:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 kmem_cache_free+0x12d/0x300 mm/slub.c:3737
 __d_free+0x23/0x30 fs/dcache.c:298
 rcu_do_batch+0x52b/0xc30 kernel/rcu/tree.c:2297
 rcu_core+0x486/0xf00 kernel/rcu/tree.c:2557
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2574
 handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
 run_ksoftirqd+0x28/0x30 kernel/softirq.c:1019
 smpboot_thread_fn+0x48c/0x8e0 kernel/smpboot.c:164
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 __call_rcu_common kernel/rcu/tree.c:2807 [inline]
 call_rcu+0xcf/0xf50 kernel/rcu/tree.c:2926
 dentry_free+0xbd/0x150 fs/dcache.c:-1
 __dentry_kill+0x535/0x680 fs/dcache.c:625
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:918
 incfs_free_mount_info+0x60/0x200 fs/incfs/data_mgmt.c:166
 incfs_kill_sb+0x1af/0x210 fs/incfs/vfs.c:2003
 deactivate_locked_super+0xb5/0x120 fs/super.c:336
 deactivate_super+0xaf/0xe0 fs/super.c:367
 cleanup_mnt+0x45e/0x4e0 fs/namespace.c:1192
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1199
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x167c/0x1700 kernel/signal.c:2895
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:288

Second to last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 __call_rcu_common kernel/rcu/tree.c:2807 [inline]
 call_rcu+0xcf/0xf50 kernel/rcu/tree.c:2926
 dentry_free+0xbd/0x150 fs/dcache.c:-1
 __dentry_kill+0x535/0x680 fs/dcache.c:625
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:918
 do_unlinkat+0x34a/0x6c0 fs/namei.c:4400
 __do_sys_unlink fs/namei.c:4445 [inline]
 __se_sys_unlink fs/namei.c:4443 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4443
 x64_sys_call+0x958/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88811466c110
 which belongs to the cache dentry of size 208
The buggy address is located 0 bytes inside of
 208-byte region [ffff88811466c110, ffff88811466c1e0)

The buggy address belongs to the physical page:
page:ffffea0004519b00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88811466cee0 pfn:0x11466c
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 ffffea000451f0c8 ffffea0004cbcbc8 ffff8881001ed080
raw: ffff88811466cee0 00000000000f000e 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112cd0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_RECLAIMABLE), pid 308, tgid 308 (udevd), ts 25782622111, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4586
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5930
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 slab_alloc mm/slub.c:3392 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3399 [inline]
 kmem_cache_alloc_lru+0x144/0x280 mm/slub.c:3415
 __d_alloc+0x34/0x6d0 fs/dcache.c:1774
 d_alloc fs/dcache.c:1854 [inline]
 d_alloc_parallel+0xe2/0x1280 fs/dcache.c:2647
 lookup_open fs/namei.c:3414 [inline]
 open_last_lookups fs/namei.c:3557 [inline]
 path_openat+0x95c/0x2f30 fs/namei.c:3787
 do_filp_open+0x1ee/0x420 fs/namei.c:3817
 do_sys_openat2+0x15e/0x820 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_openat fs/open.c:1375 [inline]
 __se_sys_openat fs/open.c:1370 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1370
 x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88811466c000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811466c080: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc
>ffff88811466c100: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff88811466c180: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff88811466c200: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
WARNING: CPU: 1 PID: 2213 at fs/dcache.c:794 fast_dput+0x207/0x290 fs/dcache.c:794
Modules linked in:
CPU: 1 PID: 2213 Comm: syz.4.561 Tainted: G    B   W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:fast_dput+0x207/0x290 fs/dcache.c:794
Code: a4 f1 ff e9 4e fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a1 fe ff ff 48 89 df e8 53 a4 f1 ff e9 94 fe ff ff e8 c9 19 ac ff <0f> 0b e9 13 ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ec fe ff
RSP: 0018:ffffc90006017770 EFLAGS: 00010293
RAX: ffffffff81c54c77 RBX: ffff88811466c110 RCX: ffff888114952880
RDX: 0000000000000000 RSI: 00000000ffffff80 RDI: 0000000000000001
RBP: ffffc90006017798 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000c02ee0 R12: 00000000ffffff80
R13: dffffc0000000000 R14: ffff88811466c168 R15: 1ffff110228cd82d
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbece234ae5 CR3: 000000010fa7f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dput+0x21/0x80 fs/dcache.c:905
 incfs_free_mount_info+0x60/0x200 fs/incfs/data_mgmt.c:166
 incfs_kill_sb+0x1af/0x210 fs/incfs/vfs.c:2003
 deactivate_locked_super+0xb5/0x120 fs/super.c:336
 deactivate_super+0xaf/0xe0 fs/super.c:367
 cleanup_mnt+0x45e/0x4e0 fs/namespace.c:1192
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1199
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x167c/0x1700 kernel/signal.c:2895
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:288
RIP: 0033:0x7f73ecb9e0d9
Code: Unable to access opcode bytes at 0x7f73ecb9e0af.
RSP: 002b:00007f73edb46fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f73ece25fa0 RCX: 00007f73ecb9e0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f73ecc35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73ece26038 R14: 00007f73ece25fa0 R15: 00007ffe87a89fd8
 </TASK>
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 2213 at fs/dcache.c:669 retain_dentry+0x158/0x2c0 fs/dcache.c:669
Modules linked in:
CPU: 0 PID: 2213 Comm: syz.4.561 Tainted: G    B   W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:retain_dentry+0x158/0x2c0 fs/dcache.c:669
Code: 31 ff e8 2b 1c ac ff 44 89 e8 83 e0 40 0f 84 b9 00 00 00 e8 fa 17 ac ff b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e8 17 ac ff <0f> 0b e9 f9 fe ff ff e8 dc 17 ac ff 31 c0 eb e0 e8 d3 17 ac ff 31
RSP: 0018:ffffc90006017770 EFLAGS: 00010293
RAX: ffffffff81c54e58 RBX: ffff88811466cdd0 RCX: ffff888114952880
RDX: 0000000000000000 RSI: 0000000010000000 RDI: 0000000000000000
RBP: ffffc90006017798 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000c02ec4 R12: 1ffff110228cd9ba
R13: ffff88810fb2c3c8 R14: 0000000010000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555806f5908 CR3: 000000010fa7f000 CR4: 00000000003506b0
Call Trace:
 <TASK>
 dput+0x36/0x80 fs/dcache.c:913
 incfs_free_mount_info+0x80/0x200 fs/incfs/data_mgmt.c:167
 incfs_kill_sb+0x1af/0x210 fs/incfs/vfs.c:2003
 deactivate_locked_super+0xb5/0x120 fs/super.c:336
 deactivate_super+0xaf/0xe0 fs/super.c:367
 cleanup_mnt+0x45e/0x4e0 fs/namespace.c:1192
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1199
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x167c/0x1700 kernel/signal.c:2895
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:288
RIP: 0033:0x7f73ecb9e0d9
Code: Unable to access opcode bytes at 0x7f73ecb9e0af.
RSP: 002b:00007f73edb46fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f73ece25fa0 RCX: 00007f73ecb9e0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f73ecc35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73ece26038 R14: 00007f73ece25fa0 R15: 00007ffe87a89fd8
 </TASK>
---[ end trace 0000000000000000 ]---
BUG: unable to handle page fault for address: fffffffffffffffc
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 7012067 P4D 7012067 PUD 7014067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2213 Comm: syz.4.561 Tainted: G    B   W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__dentry_kill+0xd0/0x680 fs/dcache.c:599
Code: ff 4d 8b 36 49 83 c6 38 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 bc 8e f1 ff 48 89 df 4d 8b 1e 41 ba ee 71 7a d4 <45> 03 53 fc 74 02 0f 0b 41 ff d3 43 0f b6 04 2c 84 c0 0f 85 bf 04
RSP: 0018:ffffc90006017718 EFLAGS: 00010246
RAX: 1ffffffff0b630d7 RBX: ffff88811466cdd0 RCX: ffffffff81c56217
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811466cdd0
RBP: ffffc90006017758 R08: 0000000000000003 R09: 00000000fffffffb
R10: 00000000d47a71ee R11: 0000000000000000 R12: 1ffff110228cd9ba
R13: dffffc0000000000 R14: ffffffff85b186b8 R15: ffff88811466ce28
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffc CR3: 000000010fa7f000 CR4: 00000000003506b0
Call Trace:
 <TASK>
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:918
 incfs_free_mount_info+0x80/0x200 fs/incfs/data_mgmt.c:167
 incfs_kill_sb+0x1af/0x210 fs/incfs/vfs.c:2003
 deactivate_locked_super+0xb5/0x120 fs/super.c:336
 deactivate_super+0xaf/0xe0 fs/super.c:367
 cleanup_mnt+0x45e/0x4e0 fs/namespace.c:1192
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1199
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x167c/0x1700 kernel/signal.c:2895
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:288
RIP: 0033:0x7f73ecb9e0d9
Code: Unable to access opcode bytes at 0x7f73ecb9e0af.
RSP: 002b:00007f73edb46fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007f73ece25fa0 RCX: 00007f73ecb9e0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f73ecc35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73ece26038 R14: 00007f73ece25fa0 R15: 00007ffe87a89fd8
 </TASK>
Modules linked in:
CR2: fffffffffffffffc
---[ end trace 0000000000000000 ]---
RIP: 0010:__dentry_kill+0xd0/0x680 fs/dcache.c:599
Code: ff 4d 8b 36 49 83 c6 38 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 bc 8e f1 ff 48 89 df 4d 8b 1e 41 ba ee 71 7a d4 <45> 03 53 fc 74 02 0f 0b 41 ff d3 43 0f b6 04 2c 84 c0 0f 85 bf 04
RSP: 0018:ffffc90006017718 EFLAGS: 00010246
RAX: 1ffffffff0b630d7 RBX: ffff88811466cdd0 RCX: ffffffff81c56217
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88811466cdd0
RBP: ffffc90006017758 R08: 0000000000000003 R09: 00000000fffffffb
R10: 00000000d47a71ee R11: 0000000000000000 R12: 1ffff110228cd9ba
R13: dffffc0000000000 R14: ffffffff85b186b8 R15: ffff88811466ce28
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffffc CR3: 000000010fa7f000 CR4: 00000000003506b0
----------------
Code disassembly (best guess):
   0:	ff 4d 8b             	decl   -0x75(%rbp)
   3:	36 49 83 c6 38       	ss add $0x38,%r14
   8:	4c 89 f0             	mov    %r14,%rax
   b:	48 c1 e8 03          	shr    $0x3,%rax
   f:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  14:	74 08                	je     0x1e
  16:	4c 89 f7             	mov    %r14,%rdi
  19:	e8 bc 8e f1 ff       	call   0xfff18eda
  1e:	48 89 df             	mov    %rbx,%rdi
  21:	4d 8b 1e             	mov    (%r14),%r11
  24:	41 ba ee 71 7a d4    	mov    $0xd47a71ee,%r10d
* 2a:	45 03 53 fc          	add    -0x4(%r11),%r10d <-- trapping instruction
  2e:	74 02                	je     0x32
  30:	0f 0b                	ud2
  32:	41 ff d3             	call   *%r11
  35:	43 0f b6 04 2c       	movzbl (%r12,%r13,1),%eax
  3a:	84 c0                	test   %al,%al
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	bf                   	.byte 0xbf
  3f:	04                   	.byte 0x4

Crashes (145):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/07 08:20 android14-6.1 92668decd5e0 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/08/07 04:45 android14-6.1 92668decd5e0 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/08/03 20:49 android14-6.1 92668decd5e0 6b7c9f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/08/01 20:01 android14-6.1 92668decd5e0 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/31 07:55 android14-6.1 92668decd5e0 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/26 08:52 android14-6.1 92668decd5e0 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/21 21:58 android14-6.1 72b456bf57ad 7c5de9c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/20 08:38 android14-6.1 c7e15f0bdc49 72524a66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/19 17:12 android14-6.1 c7e15f0bdc49 72524a66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/19 08:17 android14-6.1 c7e15f0bdc49 72524a66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/18 15:09 android14-6.1 c7e15f0bdc49 72524a66 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/17 09:47 android14-6.1 c7e15f0bdc49 7f27c57a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/15 06:44 android14-6.1 e69716042404 2130f682 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/15 03:07 android14-6.1 e69716042404 2130f682 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/14 23:05 android14-6.1 e69716042404 2130f682 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/13 21:52 android14-6.1 47455f9704a1 cc4833d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/13 09:12 android14-6.1 21b931853e8d d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/12 11:47 android14-6.1 21b931853e8d d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/11 19:06 android14-6.1 21b931853e8d d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/10 22:16 android14-6.1 52939c41021c 99e64375 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/09 10:31 android14-6.1 52939c41021c b9f1ceaa .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/08 21:07 android14-6.1 52939c41021c 88a4b44c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/08 20:06 android14-6.1 52939c41021c 88a4b44c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/07 20:54 android14-6.1 88b53eb10b7d 76cdc0c0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/06 23:05 android14-6.1 2c70030ce6de 88b240e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/07/06 06:56 android14-6.1 cf4093a4ac64 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/29 09:34 android14-6.1 83f1262811ad fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/28 23:23 android14-6.1 83f1262811ad fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/28 16:19 android14-6.1 83f1262811ad fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/27 08:39 android14-6.1 83f1262811ad fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/27 07:36 android14-6.1 83f1262811ad fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/26 18:23 android14-6.1 83f1262811ad fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/24 23:36 android14-6.1 83f1262811ad 302586aa .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/23 21:05 android14-6.1 de145cc20dc6 4b1d8f01 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/23 06:04 android14-6.1 de145cc20dc6 5a630be6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/22 08:16 android14-6.1 72813af230c7 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/15 22:04 android14-6.1 f17c14b8ada7 50bb0618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/15 12:32 android14-6.1 f17c14b8ada7 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/15 03:37 android14-6.1 f17c14b8ada7 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/10 06:28 android14-6.1 01e5078af295 34dab4be .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/09 03:41 android14-6.1 9b65e1b52152 656e94c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/07 21:59 android14-6.1 d73749230104 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/07 16:55 android14-6.1 d73749230104 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/07 04:49 android14-6.1 d73749230104 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/07 02:42 android14-6.1 d73749230104 cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/03 09:10 android14-6.1 80aded6fbb9d 3c0d2131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
2026/06/02 16:08 android14-6.1 7d008958ef16 62fe1528 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Read in incfs_free_mount_info
* Struck through repros no longer work on HEAD.