general protection fault, probably for non-canonical address 0xdffffc00000000bb: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000005d8-0x00000000000005df]
CPU: 1 PID: 7607 Comm: syz.6.742 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:blkg_tryget_closest block/blk-cgroup.c:1846 [inline]
RIP: 0010:bio_associate_blkg_from_css+0x2ab/0x9c0 block/blk-cgroup.c:1880
Code: ff df 80 3c 08 00 74 08 48 89 df e8 8f 09 ec fd 41 be d8 05 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 67 09 ec fd bb 90 00 00 00 49 03 1e
RSP: 0018:ffffc9000444f3b0 EFLAGS: 00010206
RAX: 00000000000000bb RBX: ffff88801fc6ab48 RCX: dffffc0000000000
RDX: ffffc90014b3a000 RSI: 000000000000eb77 RDI: 000000000000eb78
RBP: 1ffff11003f8d571 R08: dffffc0000000000 R09: 1ffffffff203b018
R10: dffffc0000000000 R11: fffffbfff203b019 R12: ffff888021b2a910
R13: ffff88801fc6ab88 R14: 00000000000005d8 R15: ffff88802181002c
FS:  00007fe2ecaf46c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d6a661000 CR3: 0000000077b19000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bio_associate_blkg+0x23a/0x340 block/blk-cgroup.c:1908
 lbmStartIO+0x204/0x4c0 fs/jfs/jfs_logmgr.c:2130
 lbmWrite+0x361/0x480 fs/jfs/jfs_logmgr.c:2079
 lmGCwrite fs/jfs/jfs_logmgr.c:-1 [inline]
 lmNextPage+0x6ae/0xa00 fs/jfs/jfs_logmgr.c:614
 lmWriteRecord+0x512/0x1aa0 fs/jfs/jfs_logmgr.c:441
 lmLog+0x6f6/0xa30 fs/jfs/jfs_logmgr.c:314
 diLog fs/jfs/jfs_txnmgr.c:1453 [inline]
 txLog fs/jfs/jfs_txnmgr.c:1405 [inline]
 txCommit+0x16e5/0x5200 fs/jfs/jfs_txnmgr.c:1265
 jfs_rename+0x11b4/0x1910 fs/jfs/namei.c:1302
 vfs_rename+0xbe1/0x1100 fs/namei.c:4840
 do_renameat2+0x8b7/0xf60 fs/namei.c:4993
 __do_sys_rename fs/namei.c:5039 [inline]
 __se_sys_rename fs/namei.c:5037 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5037
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe2ee89ae59
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:00007fe2ecaf4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fe2eeb13fa0 RCX: 00007fe2ee89ae59
RDX: 0000000000000000 RSI: 00002000000006c0 RDI: 00002000000003c0
RBP: 00007fe2ee930d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe2eeb14038 R14: 00007fe2eeb13fa0 R15: 00007ffc133601e8
 </TASK>
Modules linked in:
---[ end trace 5e62c90ec427b4ad ]---
RIP: 0010:blkg_tryget_closest block/blk-cgroup.c:1846 [inline]
RIP: 0010:bio_associate_blkg_from_css+0x2ab/0x9c0 block/blk-cgroup.c:1880
Code: ff df 80 3c 08 00 74 08 48 89 df e8 8f 09 ec fd 41 be d8 05 00 00 4c 03 33 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 67 09 ec fd bb 90 00 00 00 49 03 1e
RSP: 0018:ffffc9000444f3b0 EFLAGS: 00010206
RAX: 00000000000000bb RBX: ffff88801fc6ab48 RCX: dffffc0000000000
RDX: ffffc90014b3a000 RSI: 000000000000eb77 RDI: 000000000000eb78
RBP: 1ffff11003f8d571 R08: dffffc0000000000 R09: 1ffffffff203b018
R10: dffffc0000000000 R11: fffffbfff203b019 R12: ffff888021b2a910
R13: ffff88801fc6ab88 R14: 00000000000005d8 R15: ffff88802181002c
FS:  00007fe2ecaf46c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d6a66f000 CR3: 0000000077b19000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
   4:	74 08                	je     0xe
   6:	48 89 df             	mov    %rbx,%rdi
   9:	e8 8f 09 ec fd       	call   0xfdec099d
   e:	41 be d8 05 00 00    	mov    $0x5d8,%r14d
  14:	4c 03 33             	add    (%rbx),%r14
  17:	4c 89 f0             	mov    %r14,%rax
  1a:	48 c1 e8 03          	shr    $0x3,%rax
  1e:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  25:	fc ff df
* 28:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2c:	74 08                	je     0x36
  2e:	4c 89 f7             	mov    %r14,%rdi
  31:	e8 67 09 ec fd       	call   0xfdec099d
  36:	bb 90 00 00 00       	mov    $0x90,%ebx
  3b:	49 03 1e             	add    (%r14),%rbx