BUG: unable to handle kernel paging request at ffff887fc1275b10
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 24891 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline]
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:31 [inline]
RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:22 [inline]
RIP: 0010:dbNextAG+0x179/0x530 fs/jfs/jfs_dmap.c:622
Code: 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19 03 00 00 <45> 8b 6d 00 31 ff 44 89 ee e8 d9 c9 ec fe 45 85 ed 0f 85 60 02 00
RSP: 0018:ffff8880478c7238 EFLAGS: 00010246
RAX: 0000000000000003 RBX: ffffffffc473ec00 RCX: ffffffff8275bccf
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff887fc1275b10
RBP: ffffffffc473ec00 R08: 0000000000000000 R09: ffffed0ff824eb62
R10: ffff887fc1275b13 R11: 00000000b8078c0a R12: ffff8880af57a640
R13: ffff887fc1275b10 R14: 00000000017b5daf R15: ffff88808a7ba440
FS:  00007f04f5293700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887fc1275b10 CR3: 000000009e94a000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dbAlloc+0x44b/0xb00 fs/jfs/jfs_dmap.c:857
 dtSplitUp+0x365/0x4e70 fs/jfs/jfs_dtree.c:987
 dtInsert+0x7fd/0xa00 fs/jfs/jfs_dtree.c:876
 jfs_create.part.0+0x3c6/0x880 fs/jfs/namei.c:150
 jfs_create+0x3f/0x60 fs/jfs/namei.c:90
 lookup_open+0x893/0x1a20 fs/namei.c:3235
 do_last fs/namei.c:3327 [inline]
 path_openat+0x1094/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f04f6d205a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f04f5293168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f04f6e40f80 RCX: 00007f04f6d205a9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f04f6d7b7b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1c79b8df R14: 00007f04f5293300 R15: 0000000000022000
Modules linked in:
CR2: ffff887fc1275b10
---[ end trace 65cb2b95f4c34084 ]---
RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline]
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:31 [inline]
RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:22 [inline]
RIP: 0010:dbNextAG+0x179/0x530 fs/jfs/jfs_dmap.c:622
Code: 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19 03 00 00 <45> 8b 6d 00 31 ff 44 89 ee e8 d9 c9 ec fe 45 85 ed 0f 85 60 02 00
RSP: 0018:ffff8880478c7238 EFLAGS: 00010246
RAX: 0000000000000003 RBX: ffffffffc473ec00 RCX: ffffffff8275bccf
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff887fc1275b10
RBP: ffffffffc473ec00 R08: 0000000000000000 R09: ffffed0ff824eb62
R10: ffff887fc1275b13 R11: 00000000b8078c0a R12: ffff8880af57a640
R13: ffff887fc1275b10 R14: 00000000017b5daf R15: ffff88808a7ba440
FS:  00007f04f5293700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887fc1275b10 CR3: 000000009e94a000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 89 ea             	mov    %r13,%rdx
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df
   d:	48 c1 ea 03          	shr    $0x3,%rdx
  11:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  15:	4c 89 e8             	mov    %r13,%rax
  18:	83 e0 07             	and    $0x7,%eax
  1b:	83 c0 03             	add    $0x3,%eax
  1e:	38 d0                	cmp    %dl,%al
  20:	7c 08                	jl     0x2a
  22:	84 d2                	test   %dl,%dl
  24:	0f 85 19 03 00 00    	jne    0x343
* 2a:	45 8b 6d 00          	mov    0x0(%r13),%r13d <-- trapping instruction
  2e:	31 ff                	xor    %edi,%edi
  30:	44 89 ee             	mov    %r13d,%esi
  33:	e8 d9 c9 ec fe       	callq  0xfeecca11
  38:	45 85 ed             	test   %r13d,%r13d
  3b:	0f                   	.byte 0xf
  3c:	85 60 02             	test   %esp,0x2(%rax)