syzbot

general protection fault, probably for non-canonical address 0xfbd59c0000000021: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0xdead000000000108-0xdead00000000010f]
CPU: 0 PID: 113 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_or_report+0x3d/0xf0 lib/list_debug.c:29
Code: 00 00 00 48 89 d3 48 85 d2 0f 84 8c 00 00 00 49 89 f6 49 89 ff 49 bd 00 00 00 00 00 fc ff df 4c 8d 63 08 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 d4 e3 b6 fd 49 8b 14 24 4c 39 f2
RSP: 0018:ffffc90002617c70 EFLAGS: 00010806
RAX: 1bd5a00000000021 RBX: dead000000000100 RCX: 0000000000000000
RDX: dead000000000100 RSI: ffffc90002619230 RDI: ffff8880745715e0
RBP: ffff8880745715d0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520004c2f70 R12: dead000000000108
R13: dffffc0000000000 R14: ffffc90002619230 R15: ffff8880745715e0
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555591bdc5c8 CR3: 0000000060f56000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add include/linux/list.h:169 [inline]
 diUpdatePMap+0x62d/0xe50 fs/jfs/jfs_imap.c:2831
 txUpdateMap+0x6c2/0x890 fs/jfs/jfs_txnmgr.c:2356
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x3d/0xf0 lib/list_debug.c:29
Code: 00 00 00 48 89 d3 48 85 d2 0f 84 8c 00 00 00 49 89 f6 49 89 ff 49 bd 00 00 00 00 00 fc ff df 4c 8d 63 08 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 d4 e3 b6 fd 49 8b 14 24 4c 39 f2
RSP: 0018:ffffc90002617c70 EFLAGS: 00010806
RAX: 1bd5a00000000021 RBX: dead000000000100 RCX: 0000000000000000
RDX: dead000000000100 RSI: ffffc90002619230 RDI: ffff8880745715e0
RBP: ffff8880745715d0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520004c2f70 R12: dead000000000108
R13: dffffc0000000000 R14: ffffc90002619230 R15: ffff8880745715e0
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555591bdc5c8 CR3: 0000000060f56000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 48 89             	add    %cl,-0x77(%rax)
   5:	d3 48 85             	rorl   %cl,-0x7b(%rax)
   8:	d2 0f                	rorb   %cl,(%rdi)
   a:	84 8c 00 00 00 49 89 	test   %cl,-0x76b70000(%rax,%rax,1)
  11:	f6 49 89 ff          	testb  $0xff,-0x77(%rcx)
  15:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  1c:	fc ff df
  1f:	4c 8d 63 08          	lea    0x8(%rbx),%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 d4 e3 b6 fd       	call   0xfdb6e40d
  39:	49 8b 14 24          	mov    (%r12),%rdx
  3d:	4c 39 f2             	cmp    %r14,%rdx