R13: 0000000000000000 R14: 00007fb915e8dfa0 R15: 00007fff49408b78 ---[ end trace f0e465d73d680f19 ]--- list_del corruption. prev->next should be ffff88810fcf7f70, but was ffff88810fcf7700 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3684 Comm: syz.1.800 Tainted: G W 5.10.234-syzkaller-00157-ge0b88ee5f09c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59 Code: 4c 89 f6 e8 fc 7e 56 02 0f 0b 48 c7 c7 80 36 60 85 4c 89 f6 e8 eb 7e 56 02 0f 0b 48 c7 c7 e0 36 60 85 4c 89 f6 e8 da 7e 56 02 <0f> 0b 48 c7 c7 40 37 60 85 4c 89 f6 e8 c9 7e 56 02 0f 0b cc 55 48 RSP: 0018:ffffc90001727778 EFLAGS: 00010246 RAX: 0000000000000054 RBX: ffff88810fcf7700 RCX: 6628c06da62f7600 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffc90001727798 R08: ffffffff815232c8 R09: ffffed103ee04e8b R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88810fcf7f38 R14: ffff88810fcf7f70 R15: ffff88810fcf75e0 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f55f1858f98 CR3: 000000012008e000 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 fs/dcache.c:-1 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 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xc83/0x2a50 kernel/exit.c:863 do_group_exit+0x141/0x310 kernel/exit.c:985 get_signal+0x10a0/0x1410 kernel/signal.c:2793 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169 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: 0033:0x7fb915ca7a25 Code: Unable to access opcode bytes at RIP 0x7fb915ca79fb. RSP: 002b:00007fb9142def80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007fb915e8dfa0 RCX: 00007fb915ca7a25 RDX: 00007fb9142defc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fb915cf6990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb915e8dfa0 R15: 00007fff49408b78 Modules linked in: ---[ end trace f0e465d73d680f1a ]--- RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59 Code: 4c 89 f6 e8 fc 7e 56 02 0f 0b 48 c7 c7 80 36 60 85 4c 89 f6 e8 eb 7e 56 02 0f 0b 48 c7 c7 e0 36 60 85 4c 89 f6 e8 da 7e 56 02 <0f> 0b 48 c7 c7 40 37 60 85 4c 89 f6 e8 c9 7e 56 02 0f 0b cc 55 48 RSP: 0018:ffffc90001727778 EFLAGS: 00010246 RAX: 0000000000000054 RBX: ffff88810fcf7700 RCX: 6628c06da62f7600 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffc90001727798 R08: ffffffff815232c8 R09: ffffed103ee04e8b R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88810fcf7f38 R14: ffff88810fcf7f70 R15: ffff88810fcf75e0 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f55f1858f98 CR3: 000000000660f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400