Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 109 Comm: jfsCommit Not tainted 6.12.0-rc7-syzkaller-00125-gcfaaa7d010d1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
RIP: 0010:lmLogSync+0xf1/0xae0 fs/jfs/jfs_logmgr.c:935
Code: 00 00 49 8d 5f d8 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 8d 39 cf fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 70 39 cf fe 48 8b 3b e8 48 bc 9c
RSP: 0018:ffffc90002cafc00 EFLAGS: 00010216
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 0000000000000000
RDX: ffff88801e300000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002cafd18 R08: ffffffff832f8c9d R09: ffffc90002cafc6c
R10: dffffc0000000000 R11: fffff52000595f90 R12: ffff88807c9b7800
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888029ce8838
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056156920a598 CR3: 0000000060b26000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 jfs_syncpt+0x7d/0xa0 fs/jfs/jfs_logmgr.c:1041
 txEnd+0x30f/0x560 fs/jfs/jfs_txnmgr.c:549
 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline]
 jfs_lazycommit+0x634/0xb80 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
RIP: 0010:lmLogSync+0xf1/0xae0 fs/jfs/jfs_logmgr.c:935
Code: 00 00 49 8d 5f d8 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 8d 39 cf fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 70 39 cf fe 48 8b 3b e8 48 bc 9c
RSP: 0018:ffffc90002cafc00 EFLAGS: 00010216
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 0000000000000000
RDX: ffff88801e300000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002cafd18 R08: ffffffff832f8c9d R09: ffffc90002cafc6c
R10: dffffc0000000000 R11: fffff52000595f90 R12: ffff88807c9b7800
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888029ce8838
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056156920a598 CR3: 0000000060b2a000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	49 8d 5f d8          	lea    -0x28(%r15),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 8d 39 cf fe       	call   0xfecf39a9
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 30          	add    $0x30,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 70 39 cf fe       	call   0xfecf39a9
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	e8                   	.byte 0xe8
  3d:	48                   	rex.W
  3e:	bc                   	.byte 0xbc
  3f:	9c                   	pushf