general protection fault, probably for non-canonical address 0xdffffc00000000ba: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000005d0-0x00000000000005d7]
CPU: 0 PID: 4172 Comm: syz-executor Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:blkg_tryget_closest block/blk-cgroup.c:1831 [inline]
RIP: 0010:bio_associate_blkg_from_css+0x293/0x960 block/blk-cgroup.c:1865
Code: c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 c6 4b d3 fd bd d0 05 00 00 49 03 2e 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 ef e8 9f 4b d3 fd bb 90 00 00 00 48 03 5d
RSP: 0018:ffffc90002ec7a60 EFLAGS: 00010202
RAX: 00000000000000ba RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8ad90520 RDI: ffffffff8ad904e0
RBP: 00000000000005d0 R08: ffffffff83f6fe4b R09: fffffbfff20ec821
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888147a36800
R13: ffff8880756b3780 R14: ffff8880756b3788 R15: ffff888026c1bbac
FS:  00005555711c5500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555711e05c8 CR3: 0000000064bde000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bio_associate_blkg+0x220/0x330 block/blk-cgroup.c:1893
 lbmStartIO+0x207/0x4b0 fs/jfs/jfs_logmgr.c:2130
 lbmWrite+0x379/0x4a0 fs/jfs/jfs_logmgr.c:2079
 jfs_flush_journal+0x533/0xec0 fs/jfs/jfs_logmgr.c:1556
 jfs_sync_fs+0x7c/0xa0 fs/jfs/super.c:689
 sync_filesystem+0xe8/0x220 fs/sync.c:56
 generic_shutdown_super+0x6b/0x310 fs/super.c:448
 kill_block_super+0x7a/0xe0 fs/super.c:1427
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd12c8e6b47
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:00007ffc433ff918 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fd12c9585fc RCX: 00007fd12c8e6b47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc433ff9d0
RBP: 00007ffc433ff9d0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc43400a50
R13: 00007fd12c9585fc R14: 000000000000fe44 R15: 00007ffc43400a90
 </TASK>
Modules linked in:
---[ end trace 490ed477bc6393db ]---
RIP: 0010:blkg_tryget_closest block/blk-cgroup.c:1831 [inline]
RIP: 0010:bio_associate_blkg_from_css+0x293/0x960 block/blk-cgroup.c:1865
Code: c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 c6 4b d3 fd bd d0 05 00 00 49 03 2e 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 ef e8 9f 4b d3 fd bb 90 00 00 00 48 03 5d
RSP: 0018:ffffc90002ec7a60 EFLAGS: 00010202
RAX: 00000000000000ba RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8ad90520 RDI: ffffffff8ad904e0
RBP: 00000000000005d0 R08: ffffffff83f6fe4b R09: fffffbfff20ec821
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888147a36800
R13: ffff8880756b3780 R14: ffff8880756b3788 R15: ffff888026c1bbac
FS:  00005555711c5500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30c16ff8 CR3: 0000000064bde000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c1 e8 03             	shr    $0x3,%eax
   3:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
   7:	74 08                	je     0x11
   9:	4c 89 f7             	mov    %r14,%rdi
   c:	e8 c6 4b d3 fd       	call   0xfdd34bd7
  11:	bd d0 05 00 00       	mov    $0x5d0,%ebp
  16:	49 03 2e             	add    (%r14),%rbp
  19:	48 89 e8             	mov    %rbp,%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:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	48 89 ef             	mov    %rbp,%rdi
  33:	e8 9f 4b d3 fd       	call   0xfdd34bd7
  38:	bb 90 00 00 00       	mov    $0x90,%ebx
  3d:	48                   	rex.W
  3e:	03                   	.byte 0x3
  3f:	5d                   	pop    %rbp