Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 UID: 0 PID: 18674 Comm: syz.0.560 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:diRead+0x43c/0xbc0 fs/jfs/jfs_imap.c:342
Code: 08 00 4c 8b 64 24 18 74 08 48 89 ef e8 fd f8 d6 fe 48 8b 5d 00 48 83 c3 34 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 84 05 00 00 8b 1b bf 40 00 00 00 89 de e8
RSP: 0018:ffffc90003e27718 EFLAGS: 00010207
RAX: 0000000000000006 RBX: 0000000000000034 RCX: dffffc0000000000
RDX: ffffc9000d343000 RSI: 000000000000024d RDI: 000000000000024e
RBP: ffff88802f272aa0 R08: ffffffff834c7540 R09: 1ffff1100f770140
R10: dffffc0000000000 R11: ffffed100f770141 R12: 0000000000000000
R13: 0000000000000024 R14: 0000000000000000 R15: ffff88807bb80d68
FS:  00007f9f558566c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff7fb72ea8 CR3: 0000000041ed4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_iget+0x86/0x3e0 fs/jfs/inode.c:35
 jfs_lookup+0x226/0x410 fs/jfs/namei.c:1469
 __lookup_slow+0x296/0x400 fs/namei.c:1793
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 do_mount fs/namespace.c:3897 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x297/0x3c0 fs/namespace.c:4088
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f5498cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f9f55856038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9f54ba6160 RCX: 00007f9f5498cde9
RDX: 0000200000000180 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f9f54a0e2a0 R08: 0000200000000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9f54ba6160 R15: 00007ffe38419598
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diRead+0x43c/0xbc0 fs/jfs/jfs_imap.c:342
Code: 08 00 4c 8b 64 24 18 74 08 48 89 ef e8 fd f8 d6 fe 48 8b 5d 00 48 83 c3 34 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 84 05 00 00 8b 1b bf 40 00 00 00 89 de e8
RSP: 0018:ffffc90003e27718 EFLAGS: 00010207
RAX: 0000000000000006 RBX: 0000000000000034 RCX: dffffc0000000000
RDX: ffffc9000d343000 RSI: 000000000000024d RDI: 000000000000024e
RBP: ffff88802f272aa0 R08: ffffffff834c7540 R09: 1ffff1100f770140
R10: dffffc0000000000 R11: ffffed100f770141 R12: 0000000000000000
R13: 0000000000000024 R14: 0000000000000000 R15: ffff88807bb80d68
FS:  00007f9f558566c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f4a599000 CR3: 0000000041ed4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	08 00                	or     %al,(%rax)
   2:	4c 8b 64 24 18       	mov    0x18(%rsp),%r12
   7:	74 08                	je     0x11
   9:	48 89 ef             	mov    %rbp,%rdi
   c:	e8 fd f8 d6 fe       	call   0xfed6f90e
  11:	48 8b 5d 00          	mov    0x0(%rbp),%rbx
  15:	48 83 c3 34          	add    $0x34,%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 84 05 00 00    	jne    0x5ba
  36:	8b 1b                	mov    (%rbx),%ebx
  38:	bf 40 00 00 00       	mov    $0x40,%edi
  3d:	89 de                	mov    %ebx,%esi
  3f:	e8                   	.byte 0xe8