general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 PID: 110 Comm: jfsCommit Not tainted 6.6.100-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
RIP: 0010:lmLogSync+0xfc/0x9c0 fs/jfs/jfs_logmgr.c:935
Code: 1e 86 fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 82 64 dd fe 4d 8b 3f 49 83 c7 40 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 66 64 dd fe 49 8b 3f e8 ae 85 b3 fe
RSP: 0018:ffffc9000262fc40 EFLAGS: 00010202
RAX: 0000000000000008 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888018b1bc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000262fd48 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc9000262fca0 R11: fffff520004c5f98 R12: ffff888024071000
R13: dffffc0000000000 R14: ffff888024c00e38 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6582e56c0 CR3: 0000000061e6e000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 jfs_syncpt+0x7b/0x90 fs/jfs/jfs_logmgr.c:1041
 txEnd+0x2e5/0x520 fs/jfs/jfs_txnmgr.c:549
 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline]
 jfs_lazycommit+0x5a6/0xa60 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:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
RIP: 0010:lmLogSync+0xfc/0x9c0 fs/jfs/jfs_logmgr.c:935
Code: 1e 86 fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 82 64 dd fe 4d 8b 3f 49 83 c7 40 4c 89 f8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ff e8 66 64 dd fe 49 8b 3f e8 ae 85 b3 fe
RSP: 0018:ffffc9000262fc40 EFLAGS: 00010202
RAX: 0000000000000008 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888018b1bc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000262fd48 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc9000262fca0 R11: fffff520004c5f98 R12: ffff888024071000
R13: dffffc0000000000 R14: ffff888024c00e38 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa31a781d38 CR3: 000000007876a000 CR4: 00000000003506e0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	86 fe                	xchg   %bh,%dh
   2:	4d 8d 7e d8          	lea    -0x28(%r14),%r15
   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 82 64 dd fe       	call   0xfedd649d
  1b:	4d 8b 3f             	mov    (%r15),%r15
  1e:	49 83 c7 40          	add    $0x40,%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 66 64 dd fe       	call   0xfedd649d
  37:	49 8b 3f             	mov    (%r15),%rdi
  3a:	e8 ae 85 b3 fe       	call   0xfeb385ed