list_del corruption. prev->next should be ffff888112d3a6f0, but was ffff888112d3ae60 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 398 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59 Code: 48 89 de e8 a6 06 56 02 0f 0b 48 c7 c7 c0 84 63 85 48 89 de e8 95 06 56 02 0f 0b 48 c7 c7 20 85 63 85 48 89 de e8 84 06 56 02 <0f> 0b 48 c7 c7 80 85 63 85 48 89 de e8 73 06 56 02 0f 0b 00 55 48 RSP: 0018:ffffc900010d7ad8 EFLAGS: 00010246 RAX: 0000000000000054 RBX: ffff888112d3a6f0 RCX: 239fe8a9546bfc00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc900010d7af8 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7 R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff888112d3ae60 R15: ffff888112d35c50 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f642526f000 CR3: 00000001275b2000 CR4: 00000000003506a0 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:529 [inline] __dentry_kill+0x248/0x660 fs/dcache.c:582 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1 dput+0x47/0x90 fs/dcache.c:893 incfs_free_mount_info+0x60/0x200 fs/incfs/data_mgmt.c:166 incfs_kill_sb+0x1af/0x210 fs/incfs/vfs.c:1997 deactivate_locked_super+0xa0/0x100 fs/super.c:335 deactivate_super+0xaf/0xe0 fs/super.c:366 cleanup_mnt+0x44f/0x500 fs/namespace.c:1149 __cleanup_mnt+0x19/0x20 fs/namespace.c:1156 task_work_run+0x127/0x190 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xb70/0x29a0 kernel/exit.c:890 do_group_exit+0x149/0x310 kernel/exit.c:1004 __do_sys_exit_group kernel/exit.c:1015 [inline] __se_sys_exit_group kernel/exit.c:1013 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1013 x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f9a17085e59 Code: Unable to access opcode bytes at RIP 0x7f9a17085e2f. RSP: 002b:00007fff416d4ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f9a1711b32a RCX: 00007f9a17085e59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000009 R08: 0000000000000000 R09: 00007f9a1711b2ca R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff416d5fa0 R13: 00007f9a1711b2ca R14: 000055556a8cd4e8 R15: 00007fff416d7070 Modules linked in: ---[ end trace 490121bb1b211612 ]--- RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59 Code: 48 89 de e8 a6 06 56 02 0f 0b 48 c7 c7 c0 84 63 85 48 89 de e8 95 06 56 02 0f 0b 48 c7 c7 20 85 63 85 48 89 de e8 84 06 56 02 <0f> 0b 48 c7 c7 80 85 63 85 48 89 de e8 73 06 56 02 0f 0b 00 55 48 RSP: 0018:ffffc900010d7ad8 EFLAGS: 00010246 RAX: 0000000000000054 RBX: ffff888112d3a6f0 RCX: 239fe8a9546bfc00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc900010d7af8 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7 R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff888112d3ae60 R15: ffff888112d35c50 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f642526f000 CR3: 00000001275b2000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400