list_del corruption. prev->next should be ffff888120d5eb30, but was ffff888120d0ec50
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1721 Comm: syz.6.348 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 b6 ba 56 02 0f 0b 48 c7 c7 c0 a1 63 85 48 89 de e8 a5 ba 56 02 0f 0b 48 c7 c7 20 a2 63 85 48 89 de e8 94 ba 56 02 <0f> 0b 48 c7 c7 80 a2 63 85 48 89 de e8 83 ba 56 02 0f 0b 00 55 48
RSP: 0018:ffffc900041ef9c0 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff888120d5eb30 RCX: 767c3a36ef1e0300
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc900041ef9e0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200083de98 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888120d0ec50 R15: ffff888111ed3c40
FS:  00007fd0b29846c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5f0efdeff8 CR3: 0000000115ac1000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:529 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:582
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x47/0x90 fs/dcache.c:893
 __fput+0x580/0x8b0 fs/file_table.c:319
 ____fput+0x15/0x20 fs/file_table.c:339
 task_work_run+0x127/0x190 kernel/task_work.c:188
 get_signal+0x13fb/0x1480 kernel/signal.c:2679
 arch_do_signal_or_restart+0xdf/0x11c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd0b2b42819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd0b2984028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: 0000000000000000 RBX: 00007fd0b2dbc090 RCX: 00007fd0b2b42819
RDX: 0000200000000b80 RSI: 0000200000000600 RDI: 0000000000000000
RBP: 00007fd0b2bd8c91 R08: 0000200000000180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd0b2dbc128 R14: 00007fd0b2dbc090 R15: 00007fffdb755cb8
 </TASK>
Modules linked in:
---[ end trace 12fcbbf025aa4056 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 b6 ba 56 02 0f 0b 48 c7 c7 c0 a1 63 85 48 89 de e8 a5 ba 56 02 0f 0b 48 c7 c7 20 a2 63 85 48 89 de e8 94 ba 56 02 <0f> 0b 48 c7 c7 80 a2 63 85 48 89 de e8 83 ba 56 02 0f 0b 00 55 48
RSP: 0018:ffffc900041ef9c0 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff888120d5eb30 RCX: 767c3a36ef1e0300
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc900041ef9e0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200083de98 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888120d0ec50 R15: ffff888111ed3c40
FS:  00007fd0b29846c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5f0efdeff8 CR3: 0000000115ac1000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400