list_add corruption. next is NULL.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:26!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 108 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__list_add_valid+0xb6/0xe0 lib/list_debug.c:25
Code: 4c 89 fe 4c 89 f2 48 89 d9 e8 c6 09 0d 06 0f 0b 48 c7 c7 60 14 df 8a e8 b8 09 0d 06 0f 0b 48 c7 c7 00 15 df 8a e8 aa 09 0d 06 <0f> 0b 48 c7 c7 60 15 df 8a 4c 89 f6 48 89 d9 e8 96 09 0d 06 0f 0b
RSP: 0018:ffffc90002d47c90 EFLAGS: 00010046
RAX: 0000000000000022 RBX: 0000000000000000 RCX: 097e63595605a300
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff88807acc10f8 R08: ffffc90002d47987 R09: 1ffff920005a8f30
R10: dffffc0000000000 R11: fffff520005a8f31 R12: ffffc90002699340
R13: 0000000000000000 R14: ffff88807acc11a8 R15: ffff88807acc1108
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6c45456b8 CR3: 000000005b44f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add include/linux/list.h:69 [inline]
 list_add include/linux/list.h:88 [inline]
 diUpdatePMap+0x629/0xe50 fs/jfs/jfs_imap.c:2831
 txUpdateMap+0x6c2/0x890 fs/jfs/jfs_txnmgr.c:2357
 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
 jfs_lazycommit+0x425/0xa70 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid+0xb6/0xe0 lib/list_debug.c:25
Code: 4c 89 fe 4c 89 f2 48 89 d9 e8 c6 09 0d 06 0f 0b 48 c7 c7 60 14 df 8a e8 b8 09 0d 06 0f 0b 48 c7 c7 00 15 df 8a e8 aa 09 0d 06 <0f> 0b 48 c7 c7 60 15 df 8a 4c 89 f6 48 89 d9 e8 96 09 0d 06 0f 0b
RSP: 0018:ffffc90002d47c90 EFLAGS: 00010046
RAX: 0000000000000022 RBX: 0000000000000000 RCX: 097e63595605a300
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff88807acc10f8 R08: ffffc90002d47987 R09: 1ffff920005a8f30
R10: dffffc0000000000 R11: fffff520005a8f31 R12: ffffc90002699340
R13: 0000000000000000 R14: ffff88807acc11a8 R15: ffff88807acc1108
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6c45456b8 CR3: 000000005b44f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400