Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 UID: 0 PID: 11646 Comm: syz-executor Not tainted 6.14.0-rc6-syzkaller-00145-g695caca9345a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:diWrite+0x1b8/0x1bd0 fs/jfs/jfs_imap.c:609
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 3e 14 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 43 80 48 8d 78 10 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e ce 13 00 00 8b 40 10 44 89
RSP: 0018:ffffc90004bdfa68 EFLAGS: 00010212
RAX: 0000000000000000 RBX: ffff888039f51fd8 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff833b9e39 RDI: 0000000000000010
RBP: 000000000000001c R08: 0000000000000007 R09: 0000000000000000
R10: 000000000000001c R11: 0000000000000006 R12: ffff888039f5409c
R13: ffff888039f54098 R14: 0000000000000004 R15: ffff88804d224000
FS:  0000555567f6d500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007facefdd3000 CR3: 0000000039348000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 txCommit+0x6b8/0x4e50 fs/jfs/jfs_txnmgr.c:1255
 jfs_unlink+0x815/0xac0 fs/jfs/namei.c:556
 vfs_unlink+0x2fe/0x9b0 fs/namei.c:4525
 do_unlinkat+0x570/0x760 fs/namei.c:4589
 __do_sys_unlink fs/namei.c:4637 [inline]
 __se_sys_unlink fs/namei.c:4635 [inline]
 __x64_sys_unlink+0xc5/0x110 fs/namei.c:4635
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5b8cd8c717
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff29a2a8f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b8cd8c717
RDX: 00007fff29a2a920 RSI: 00007fff29a2a9b0 RDI: 00007fff29a2a9b0
RBP: 00007fff29a2a9b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007fff29a2baa0
R13: 00007f5b8ce0e08c R14: 00000000000d5cb2 R15: 00007fff29a2cb70
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diWrite+0x1b8/0x1bd0 fs/jfs/jfs_imap.c:609
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 3e 14 00 00 48 ba 00 00 00 00 00 fc ff df 48 8b 43 80 48 8d 78 10 48 89 f9 48 c1 e9 03 <0f> b6 14 11 84 d2 74 09 80 fa 03 0f 8e ce 13 00 00 8b 40 10 44 89
RSP: 0018:ffffc90004bdfa68 EFLAGS: 00010212
RAX: 0000000000000000 RBX: ffff888039f51fd8 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffffffff833b9e39 RDI: 0000000000000010
RBP: 000000000000001c R08: 0000000000000007 R09: 0000000000000000
R10: 000000000000001c R11: 0000000000000006 R12: ffff888039f5409c
R13: ffff888039f54098 R14: 0000000000000004 R15: ffff88804d224000
FS:  0000555567f6d500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1af3e1f000 CR3: 0000000039348000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 3e 14 00 00    	jne    0x144f
  11:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  18:	fc ff df
  1b:	48 8b 43 80          	mov    -0x80(%rbx),%rax
  1f:	48 8d 78 10          	lea    0x10(%rax),%rdi
  23:	48 89 f9             	mov    %rdi,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	0f b6 14 11          	movzbl (%rcx,%rdx,1),%edx <-- trapping instruction
  2e:	84 d2                	test   %dl,%dl
  30:	74 09                	je     0x3b
  32:	80 fa 03             	cmp    $0x3,%dl
  35:	0f 8e ce 13 00 00    	jle    0x1409
  3b:	8b 40 10             	mov    0x10(%rax),%eax
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89