JFS: discard option not supported on device
JFS: discard option not supported on device
JFS: discard option not supported on device
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: writeback wb_workfn (flush-7:3)
task: ffff8880b5fec140 task.stack: ffff8880b5ff8000
BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 
RIP: 0010:lbmStartIO+0x14a/0x490 fs/jfs/jfs_logmgr.c:2143
RSP: 0018:ffff8880b5fff4f0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880a0597400 RCX: 0000000000000003
RDX: 000000000000001c RSI: 0000000000000000 RDI: 00000000000000e0
RBP: ffff88809e56d2c0 R08: 0000000000000001 R09: ffff88809e56d2c0
R10: ffff88809e56d347 R11: 0000000000000000 R12: ffff8880a2227200
devid 1 transid 8 /dev/loop5
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f764fc13168 CR3: 00000000b4194000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lbmWrite+0x254/0x380 fs/jfs/jfs_logmgr.c:2092
 lmGCwrite+0x3d4/0x4d0 fs/jfs/jfs_logmgr.c:806
 jfs_flush_journal.part.0+0x3e6/0x600 fs/jfs/jfs_logmgr.c:1570
 jfs_flush_journal+0x23/0x30 fs/jfs/jfs_logmgr.c:1537
 metapage_writepage+0x2f8/0xa80 fs/jfs/jfs_metapage.c:387
 __writepage+0x5a/0xc0 mm/page-writeback.c:2322
 write_cache_pages+0x505/0xd20 mm/page-writeback.c:2257
 generic_writepages mm/page-writeback.c:2346 [inline]
 generic_writepages mm/page-writeback.c:2335 [inline]
 do_writepages+0x1a2/0x240 mm/page-writeback.c:2363
 __writeback_single_inode+0xda/0x1010 fs/fs-writeback.c:1382
 writeback_sb_inodes+0x48b/0xd30 fs/fs-writeback.c:1645
 wb_writeback+0x243/0xb80 fs/fs-writeback.c:1820
 wb_do_writeback fs/fs-writeback.c:1952 [inline]
 wb_workfn+0x2bd/0xf50 fs/fs-writeback.c:1988
 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406
Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6c 24 20 49 8d bd e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 02 00 00 4d 8b ad e0 00 00 00 4d 39 ee 74 
RIP: lbmStartIO+0x14a/0x490 fs/jfs/jfs_logmgr.c:2143 RSP: ffff8880b5fff4f0
BTRFS info (device loop5): unrecognized mount option 'ref_verify'
---[ end trace 450a068594fbc607 ]---
----------------
Code disassembly (best guess):
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 06 03 00 00    	jne    0x314
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	4d 8b 6c 24 20       	mov    0x20(%r12),%r13
  1d:	49 8d bd e0 00 00 00 	lea    0xe0(%r13),%rdi
  24:	48 89 fa             	mov    %rdi,%rdx
  27:	48 c1 ea 03          	shr    $0x3,%rdx
* 2b:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2f:	0f 85 d5 02 00 00    	jne    0x30a
  35:	4d 8b ad e0 00 00 00 	mov    0xe0(%r13),%r13
  3c:	4d 39 ee             	cmp    %r13,%r14
  3f:	74                   	.byte 0x74