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: 107 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__list_add_valid+0xb6/0xe0 lib/list_debug.c:25
Code: 4c 89 fe 4c 89 f2 48 89 d9 e8 d6 51 01 06 0f 0b 48 c7 c7 20 f8 de 8a e8 c8 51 01 06 0f 0b 48 c7 c7 c0 f8 de 8a e8 ba 51 01 06 <0f> 0b 48 c7 c7 20 f9 de 8a 4c 89 f6 48 89 d9 e8 a6 51 01 06 0f 0b
RSP: 0018:ffffc90002d47bd0 EFLAGS: 00010046
RAX: 0000000000000022 RBX: 0000000000000000 RCX: cb2b1c460f95e400
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff88807873421c R08: dffffc0000000000 R09: fffff520005a8f19
R10: fffff520005a8f19 R11: 1ffff920005a8f18 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888027241da0 R15: 1ffff920004d3246
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3da20b CR3: 000000005bfb6000 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]
 dbUpdatePMap+0x6da/0xdb0 fs/jfs/jfs_dmap.c:577
 txAllocPMap+0x57d/0x6b0 fs/jfs/jfs_txnmgr.c:2425
 txUpdateMap+0x706/0x890 fs/jfs/jfs_txnmgr.c:2363
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x427/0xa50 fs/jfs/jfs_txnmgr.c:2732
 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 d6 51 01 06 0f 0b 48 c7 c7 20 f8 de 8a e8 c8 51 01 06 0f 0b 48 c7 c7 c0 f8 de 8a e8 ba 51 01 06 <0f> 0b 48 c7 c7 20 f9 de 8a 4c 89 f6 48 89 d9 e8 a6 51 01 06 0f 0b
RSP: 0018:ffffc90002d47bd0 EFLAGS: 00010046
RAX: 0000000000000022 RBX: 0000000000000000 RCX: cb2b1c460f95e400
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff88807873421c R08: dffffc0000000000 R09: fffff520005a8f19
R10: fffff520005a8f19 R11: 1ffff920005a8f18 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888027241da0 R15: 1ffff920004d3246
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3da20b CR3: 000000005bfb6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400