list_add corruption. next is NULL.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:26!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 107 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__list_add_valid+0xb6/0xe0 lib/list_debug.c:25
Code: 4c 89 fe 4c 89 f2 48 89 d9 e8 76 f0 f9 05 0f 0b 48 c7 c7 e0 f9 be 8a e8 68 f0 f9 05 0f 0b 48 c7 c7 80 fa be 8a e8 5a f0 f9 05 <0f> 0b 48 c7 c7 e0 fa be 8a 4c 89 f6 48 89 d9 e8 46 f0 f9 05 0f 0b
RSP: 0018:ffffc90002677c90 EFLAGS: 00010046
RAX: 0000000000000022 RBX: 0000000000000000 RCX: 83fd7c556f321400
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff8880242800f8 R08: dffffc0000000000 R09: fffff520004cef31
R10: fffff520004cef31 R11: 1ffff920004cef30 R12: ffffc90002689340
R13: 0000000000000000 R14: ffff8880242801a8 R15: ffff888024280108
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8f2e68000 CR3: 00000000571e0000 CR4: 00000000003506e0
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+0x427/0xa50 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 76 f0 f9 05 0f 0b 48 c7 c7 e0 f9 be 8a e8 68 f0 f9 05 0f 0b 48 c7 c7 80 fa be 8a e8 5a f0 f9 05 <0f> 0b 48 c7 c7 e0 fa be 8a 4c 89 f6 48 89 d9 e8 46 f0 f9 05 0f 0b
RSP: 0018:ffffc90002677c90 EFLAGS: 00010046
RAX: 0000000000000022 RBX: 0000000000000000 RCX: 83fd7c556f321400
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff8880242800f8 R08: dffffc0000000000 R09: fffff520004cef31
R10: fffff520004cef31 R11: 1ffff920004cef30 R12: ffffc90002689340
R13: 0000000000000000 R14: ffff8880242801a8 R15: ffff888024280108
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8f2e68000 CR3: 00000000571e0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400