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: 112 Comm: jfsCommit Not tainted 6.6.99-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: 22 86 fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 b2 67 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 96 67 dd fe 49 8b 3f e8 de 88 b3 fe
RSP: 0018:ffffc90002657c40 EFLAGS: 00010202
RAX: 0000000000000008 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888018f1bc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002657d48 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc90002657ca0 R11: fffff520004caf98 R12: ffff88807a916000
R13: dffffc0000000000 R14: ffff88802cc9ec38 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc83bc8ea8 CR3: 0000000060eab000 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: 22 86 fe 4d 8d 7e d8 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 b2 67 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 96 67 dd fe 49 8b 3f e8 de 88 b3 fe
RSP: 0018:ffffc90002657c40 EFLAGS: 00010202
RAX: 0000000000000008 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff888018f1bc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002657d48 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc90002657ca0 R11: fffff520004caf98 R12: ffff88807a916000
R13: dffffc0000000000 R14: ffff88802cc9ec38 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc83bc8ea8 CR3: 0000000052c9c000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
   0:	22 86 fe 4d 8d 7e    	and    0x7e8d4dfe(%rsi),%al
   6:	d8 4c 89 f8          	fmuls  -0x8(%rcx,%rcx,4)
   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 b2 67 dd fe       	call   0xfedd67ce
  1c:	4d 8b 3f             	mov    (%r15),%r15
  1f:	49 83 c7 40          	add    $0x40,%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 96 67 dd fe       	call   0xfedd67ce
  38:	49 8b 3f             	mov    (%r15),%rdi
  3b:	e8 de 88 b3 fe       	call   0xfeb3891e