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: 0 UID: 0 PID: 16732 Comm: syz-executor Not tainted 6.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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 ad 2a 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:ffffc9000474f778 EFLAGS: 00010207
RAX: 0000000000000006 RBX: 0000000000000034 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: ffff88803453cea0 R08: ffffffff832184b0 R09: 1ffff1100fde5703
R10: dffffc0000000000 R11: ffffed100fde5704 R12: 0000000000000000
R13: 000000000000001c R14: 0000000000000000 R15: ffff88807ef2bb80
FS:  0000555563d19500(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff29a66ff8 CR3: 000000006a59a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_iget+0x8c/0x3b0 fs/jfs/inode.c:35
 jfs_lookup+0x226/0x410 fs/jfs/namei.c:1469
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1718
 lookup_slow+0x53/0x70 fs/namei.c:1735
 walk_component+0x2e1/0x410 fs/namei.c:2039
 lookup_last fs/namei.c:2542 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2566
 filename_lookup+0x256/0x610 fs/namei.c:2595
 user_path_at+0x3a/0x60 fs/namei.c:3002
 ksys_umount fs/namespace.c:2033 [inline]
 __do_sys_umount fs/namespace.c:2041 [inline]
 __se_sys_umount fs/namespace.c:2039 [inline]
 __x64_sys_umount+0xf1/0x170 fs/namespace.c:2039
 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: 0033:0x7f9e8db7f227
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff29a677d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f9e8dbf0a14 RCX: 00007f9e8db7f227
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff29a67890
RBP: 00007fff29a67890 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff29a68980
R13: 00007f9e8dbf0a14 R14: 00000000000df51d R15: 00007fff29a69a40
 </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 ad 2a 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:ffffc9000474f778 EFLAGS: 00010207
RAX: 0000000000000006 RBX: 0000000000000034 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: ffff88803453cea0 R08: ffffffff832184b0 R09: 1ffff1100fde5703
R10: dffffc0000000000 R11: ffffed100fde5704 R12: 0000000000000000
R13: 000000000000001c R14: 0000000000000000 R15: ffff88807ef2bb80
FS:  0000555563d19500(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9c7ff50f0 CR3: 000000006a59a000 CR4: 00000000003506f0
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 ad 2a d6 fe       	call   0xfed62abe
  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