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: 276 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x121/0x9c0 fs/jfs/jfs_logmgr.c:943
Code: d5 cf fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 bd 97 ef 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 a1 97 ef fe 49 8b 3f e8 39 d5 cf fe
RSP: 0018:ffffc90002d7fc60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: f7b6db6ccd125100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002d7fd68 R08: dffffc0000000000 R09: ffffc90002d7fba4
R10: fffff520005aff7c R11: 1ffff920005aff74 R12: 1ffff920004d828d
R13: ffff888077e9e000 R14: ffff888024bc6038 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc903814bf8 CR3: 000000002500d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_syncpt+0x77/0x90 fs/jfs/jfs_logmgr.c:1049
 txEnd+0x2e1/0x520 fs/jfs/jfs_txnmgr.c:549
 txLazyCommit fs/jfs/jfs_txnmgr.c:2718 [inline]
 jfs_lazycommit+0x5ba/0xb20 fs/jfs/jfs_txnmgr.c:2766
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace 43c0fbcc08ed1a52 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x121/0x9c0 fs/jfs/jfs_logmgr.c:943
Code: d5 cf fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 bd 97 ef 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 a1 97 ef fe 49 8b 3f e8 39 d5 cf fe
RSP: 0018:ffffc90002d7fc60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: f7b6db6ccd125100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002d7fd68 R08: dffffc0000000000 R09: ffffc90002d7fba4
R10: fffff520005aff7c R11: 1ffff920005aff74 R12: 1ffff920004d828d
R13: ffff888077e9e000 R14: ffff888024bc6038 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555876ef938 CR3: 0000000023900000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	cf                   	iret
   1:	fe 4d 8d             	decb   -0x73(%rbp)
   4:	7e f0                	jle    0xfffffff6
   6:	4c 89 f8             	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 bd 97 ef fe       	call   0xfeef97d8
  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 a1 97 ef fe       	call   0xfeef97d8
  37:	49 8b 3f             	mov    (%r15),%rdi
  3a:	e8 39 d5 cf fe       	call   0xfecfd578