general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
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:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x135/0x9c0 fs/jfs/jfs_logmgr.c:935
Code: 62 bc fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 19 cb e3 fe 4d 8b 3f 49 83 c7 30 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 fd ca e3 fe 49 8b 3f e8 b5 62 bc fe
RSP: 0018:ffffc900026a7c60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 004e59f9168e9600
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900026a7d68 R08: dffffc0000000000 R09: ffffc900026a7b84
R10: fffff520004d4f79 R11: 1ffff920004d4f70 R12: ffff88807cfa6800
R13: dffffc0000000000 R14: ffff888023fe8e38 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6068028000 CR3: 000000005897d000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_syncpt+0x77/0x90 fs/jfs/jfs_logmgr.c:1041
 txEnd+0x2e1/0x520 fs/jfs/jfs_txnmgr.c:550
 txLazyCommit fs/jfs/jfs_txnmgr.c:2685 [inline]
 jfs_lazycommit+0x5a2/0xa50 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:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x135/0x9c0 fs/jfs/jfs_logmgr.c:935
Code: 62 bc fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 19 cb e3 fe 4d 8b 3f 49 83 c7 30 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 fd ca e3 fe 49 8b 3f e8 b5 62 bc fe
RSP: 0018:ffffc900026a7c60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 004e59f9168e9600
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900026a7d68 R08: dffffc0000000000 R09: ffffc900026a7b84
R10: fffff520004d4f79 R11: 1ffff920004d4f70 R12: ffff88807cfa6800
R13: dffffc0000000000 R14: ffff888023fe8e38 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5238db7198 CR3: 000000002034f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	bc fe 4d 8d 7e       	mov    $0x7e8d4dfe,%esp
   5:	f0 4c 89 f8          	lock mov %r15,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  11:	74 08                	je     0x1b
  13:	4c 89 ff             	mov    %r15,%rdi
  16:	e8 19 cb e3 fe       	call   0xfee3cb34
  1b:	4d 8b 3f             	mov    (%r15),%r15
  1e:	49 83 c7 30          	add    $0x30,%r15
  22:	4c 89 f8             	mov    %r15,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 ff             	mov    %r15,%rdi
  32:	e8 fd ca e3 fe       	call   0xfee3cb34
  37:	49 8b 3f             	mov    (%r15),%rdi
  3a:	e8 b5 62 bc fe       	call   0xfebc62f4