list_add double add: new=ffff88814bff7a70, prev=ffff88814bff7a70, next=ffff8880255d1960.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:37!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 5049 Comm: kworker/u8:10 Not tainted 6.14.0-rc2-next-20250213-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: loop4 loop_workfn
RIP: 0010:__list_add_valid_or_report+0xa4/0x130 lib/list_debug.c:35
Code: f7 74 11 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 c7 c7 60 42 81 8c 4c 89 fe 4c 89 e2 4c 89 f1 e8 dd 51 28 fc 90 <0f> 0b 48 c7 c7 60 40 81 8c e8 ce 51 28 fc 90 0f 0b 48 c7 c7 00 41
RSP: 0018:ffffc9000f397628 EFLAGS: 00010046
RAX: 0000000000000058 RBX: 1ffff110297fef4e RCX: 1af87acfbe06b900
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 1ffff11004aba32d R08: ffffffff81a1511c R09: 1ffff92001e72e60
R10: dffffc0000000000 R11: fffff52001e72e61 R12: ffff88814bff7a70
R13: dffffc0000000000 R14: ffff8880255d1960 R15: ffff88814bff7a70
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002a2f4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 loop_process_work+0x1f96/0x21c0 drivers/block/loop.c:1977
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0xa4/0x130 lib/list_debug.c:35
Code: f7 74 11 b0 01 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 c7 c7 60 42 81 8c 4c 89 fe 4c 89 e2 4c 89 f1 e8 dd 51 28 fc 90 <0f> 0b 48 c7 c7 60 40 81 8c e8 ce 51 28 fc 90 0f 0b 48 c7 c7 00 41
RSP: 0018:ffffc9000f397628 EFLAGS: 00010046
RAX: 0000000000000058 RBX: 1ffff110297fef4e RCX: 1af87acfbe06b900
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 1ffff11004aba32d R08: ffffffff81a1511c R09: 1ffff92001e72e60
R10: dffffc0000000000 R11: fffff52001e72e61 R12: ffff88814bff7a70
R13: dffffc0000000000 R14: ffff8880255d1960 R15: ffff88814bff7a70
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002a2f4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400