general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 108 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x14b/0x9e0 fs/jfs/jfs_logmgr.c:935
Code: 8d b8 fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 03 6d e0 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 e7 6c e0 fe 49 8b 3f e8 cf 8c b8 fe
RSP: 0018:ffffc90002ce7c60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 32e90ea8c443e600
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002ce7d68 R08: ffffc90002ce7bc7 R09: ffffc90002ce7b84
R10: dffffc0000000000 R11: fffff5200059cf79 R12: ffff888027d56000
R13: ffffc90002ce7cc0 R14: ffff888077d57038 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05517456b8 CR3: 000000005faff000 CR4: 00000000003506f0
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+0x5a0/0xa70 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+0x14b/0x9e0 fs/jfs/jfs_logmgr.c:935
Code: 8d b8 fe 4d 8d 7e f0 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 03 6d e0 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 e7 6c e0 fe 49 8b 3f e8 cf 8c b8 fe
RSP: 0018:ffffc90002ce7c60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 32e90ea8c443e600
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002ce7d68 R08: ffffc90002ce7bc7 R09: ffffc90002ce7b84
R10: dffffc0000000000 R11: fffff5200059cf79 R12: ffff888027d56000
R13: ffffc90002ce7cc0 R14: ffff888077d57038 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05517456b8 CR3: 000000007e158000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8d b8 fe 4d 8d 7e    	lea    0x7e8d4dfe(%rax),%edi
   6:	f0 4c 89 f8          	lock mov %r15,%rax
   a:	48 c1 e8 03          	shr    $0x3,%rax
   e:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  12:	74 08                	je     0x1c
  14:	4c 89 ff             	mov    %r15,%rdi
  17:	e8 03 6d e0 fe       	call   0xfee06d1f
  1c:	4d 8b 3f             	mov    (%r15),%r15
  1f:	49 83 c7 30          	add    $0x30,%r15
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 ff             	mov    %r15,%rdi
  33:	e8 e7 6c e0 fe       	call   0xfee06d1f
  38:	49 8b 3f             	mov    (%r15),%rdi
  3b:	e8 cf 8c b8 fe       	call   0xfeb88d0f