Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 117 Comm: jfsCommit Not tainted 6.15.0-rc2-syzkaller-00048-gc62f4b82d571 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
RIP: 0010:lmLogSync+0xf6/0xaf0 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 a8 f7 cb 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 8b f7 cb fe 48 8b 3b e8 33 19 9e
RSP: 0018:ffffc90002df7b60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 0000000000000000
RDX: ffff88801f3c3c00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002df7c78 R08: ffffffff835ef512 R09: 0000000000000000
R10: ffffc90002df7bc0 R11: fffff520005bef7c R12: ffff888026642000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88802783c038
FS:  0000000000000000(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd2f280908 CR3: 00000000327b0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_syncpt+0x7d/0xa0 fs/jfs/jfs_logmgr.c:1041
 txEnd+0x31a/0x570 fs/jfs/jfs_txnmgr.c:549
 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline]
 jfs_lazycommit+0x636/0xba0 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline]
RIP: 0010:lmLogSync+0xf6/0xaf0 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 a8 f7 cb 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 8b f7 cb fe 48 8b 3b e8 33 19 9e
RSP: 0018:ffffc90002df7b60 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 0000000000000000
RDX: ffff88801f3c3c00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002df7c78 R08: ffffffff835ef512 R09: 0000000000000000
R10: ffffc90002df7bc0 R11: fffff520005bef7c R12: ffff888026642000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff88802783c038
FS:  0000000000000000(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd2f280908 CR3: 00000000327b0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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 a8 f7 cb fe       	call   0xfecbf7c4
  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 8b f7 cb fe       	call   0xfecbf7c4
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	e8                   	.byte 0xe8
  3d:	33 19                	xor    (%rcx),%ebx
  3f:	9e                   	sahf