Oops: general protection fault, probably for non-canonical address 0xdffffc0000000104: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827]
CPU: 0 UID: 0 PID: 8159 Comm: syz.8.262 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x151/0xbc0 fs/jfs/jfs_imap.c:316
Code: 8d 5d 80 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 80 54 cf fe 4c 8b 3b 49 8d 9f 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 60 54 cf fe 4c 8b 2b 49 8d 5d 28
RSP: 0018:ffffc900067cf6d8 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000820 RCX: ffffffff81a1a45a
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900067cf660
RBP: ffff88806187db28 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000cf9ecc R12: dffffc0000000000
R13: ffff888027550e00 R14: 0000000000000004 R15: 0000000000000000
FS:  00007f8f08a756c0(0000) GS:ffff888125bc2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8efe2c9000 CR3: 0000000060116000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 jfs_iget+0x89/0x470 fs/jfs/inode.c:35
 jfs_lookup+0x220/0x420 fs/jfs/namei.c:1472
 lookup_open+0x9eb/0x1a60 fs/namei.c:4528
 open_last_lookups fs/namei.c:4767 [inline]
 path_openat+0x67c/0x1d60 fs/namei.c:4997
 do_file_open+0x23e/0x4a0 fs/namei.c:5029
 do_sys_openat2+0x115/0x200 fs/open.c:1417
 do_sys_open fs/open.c:1423 [inline]
 __do_sys_openat fs/open.c:1439 [inline]
 __se_sys_openat fs/open.c:1434 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1434
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f0a83e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8f08a75028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8f0aac6090 RCX: 00007f8f0a83e159
RDX: 0000000000000243 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f8f0a8d506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000080 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8f0aac6128 R14: 00007f8f0aac6090 R15: 00007ffd64d22f18
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
RIP: 0010:diRead+0x151/0xbc0 fs/jfs/jfs_imap.c:316
Code: 8d 5d 80 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 80 54 cf fe 4c 8b 3b 49 8d 9f 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 60 54 cf fe 4c 8b 2b 49 8d 5d 28
RSP: 0018:ffffc900067cf6d8 EFLAGS: 00010202
RAX: 0000000000000104 RBX: 0000000000000820 RCX: ffffffff81a1a45a
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900067cf660
RBP: ffff88806187db28 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000cf9ecc R12: dffffc0000000000
R13: ffff888027550e00 R14: 0000000000000004 R15: 0000000000000000
FS:  00007f8f08a756c0(0000) GS:ffff888125bc2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005605b6339950 CR3: 0000000060116000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	8d 5d 80             	lea    -0x80(%rbp),%ebx
   3:	48 89 d8             	mov    %rbx,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
   f:	74 08                	je     0x19
  11:	48 89 df             	mov    %rbx,%rdi
  14:	e8 80 54 cf fe       	call   0xfecf5499
  19:	4c 8b 3b             	mov    (%rbx),%r15
  1c:	49 8d 9f 20 08 00 00 	lea    0x820(%r15),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 60 54 cf fe       	call   0xfecf5499
  39:	4c 8b 2b             	mov    (%rbx),%r13
  3c:	49 8d 5d 28          	lea    0x28(%r13),%rbx