RSP: 002b:00007fff757d3e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f87b36bf057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff757d3ec0 RBP: 00007fff757d3ec0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff757d4f40 R13: 00007f87b37398f4 R14: 00007fff757d4f80 R15: 00000000000001d7 ---[ end trace faf365c67abba830 ]--- list_del corruption. prev->next should be ffff88811bd3c1a0, but was ffff88811bc60d50 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 492 Comm: syz-executor Tainted: G W 5.10.232-syzkaller-00746-g49e8ba0a684f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59 Code: 4c 89 f6 e8 5c 5e 56 02 0f 0b 48 c7 c7 40 32 60 85 4c 89 f6 e8 4b 5e 56 02 0f 0b 48 c7 c7 a0 32 60 85 4c 89 f6 e8 3a 5e 56 02 <0f> 0b 48 c7 c7 00 33 60 85 4c 89 f6 e8 29 5e 56 02 0f 0b cc 55 48 RSP: 0018:ffffc90000d77c50 EFLAGS: 00010246 RAX: 0000000000000054 RBX: ffff88811bc60d50 RCX: 1246efc688300a00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000d77c70 R08: ffffffff81523288 R09: ffffed103ee0a5f8 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88811bd3c168 R14: ffff88811bd3c1a0 R15: ffff8881106b8800 FS: 000055555e810500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001217de000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:132 [inline] dentry_unlist fs/dcache.c:526 [inline] __dentry_kill+0x250/0x650 fs/dcache.c:579 dentry_kill+0xc0/0x2a0 dput+0x40/0x80 fs/dcache.c:883 incfs_free_mount_info+0x60/0x210 fs/incfs/data_mgmt.c:166 incfs_kill_sb+0x1c2/0x220 fs/incfs/vfs.c:1979 deactivate_locked_super+0xad/0x110 fs/super.c:335 deactivate_super+0xbe/0xf0 fs/super.c:366 cleanup_mnt+0x45c/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x129/0x190 kernel/task_work.c:189 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0xa2/0x1a0 kernel/entry/common.c:274 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f87b36bf057 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff757d3e08 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f87b36bf057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff757d3ec0 RBP: 00007fff757d3ec0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fff757d4f40 R13: 00007f87b37398f4 R14: 00007fff757d4f80 R15: 00000000000001d7 Modules linked in: ---[ end trace faf365c67abba831 ]--- RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59 Code: 4c 89 f6 e8 5c 5e 56 02 0f 0b 48 c7 c7 40 32 60 85 4c 89 f6 e8 4b 5e 56 02 0f 0b 48 c7 c7 a0 32 60 85 4c 89 f6 e8 3a 5e 56 02 <0f> 0b 48 c7 c7 00 33 60 85 4c 89 f6 e8 29 5e 56 02 0f 0b cc 55 48 RSP: 0018:ffffc90000d77c50 EFLAGS: 00010246 RAX: 0000000000000054 RBX: ffff88811bc60d50 RCX: 1246efc688300a00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000d77c70 R08: ffffffff81523288 R09: ffffed103ee0a5f8 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88811bd3c168 R14: ffff88811bd3c1a0 R15: ffff8881106b8800 FS: 000055555e810500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001217de000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400