R13: 00007f5723e31f90 R14: 0000000000042f12 R15: 00007ffdf0580730
 </TASK>
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/super.c:76!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5453 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:gfs2_jindex_free+0x44e/0x450 fs/gfs2/super.c:76
Code: c8 69 8d 07 cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c e2 fd ff ff e8 42 90 0c fe e9 d8 fd ff ff e8 e8 81 8a 07 e8 f3 db a0 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc900032c7bc0 EFLAGS: 00010293
RAX: ffffffff8424bf7d RBX: dead000000000122 RCX: ffff88803e310000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc900032c7c80 R08: ffff8880463a4e37 R09: 1ffff11008c749c6
R10: dffffc0000000000 R11: ffffed1008c749c7 R12: ffff8880463a4908
R13: dffffc0000000000 R14: ffff88804629ec00 R15: ffff88804629ec78
FS:  000055558118e500(0000) GS:ffff88808ca59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8de1eb3a37 CR3: 0000000040ad6000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_put_super+0x7d9/0x860 fs/gfs2/super.c:638
 generic_shutdown_super+0x13d/0x2d0 fs/super.c:646
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5723d9d9d7
Code: Unable to access opcode bytes at 0x7f5723d9d9ad.
RSP: 002b:00007ffdf057f5a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5723e31f90 RCX: 00007f5723d9d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdf057f660
RBP: 00007ffdf057f660 R08: 00007ffdf0580660 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdf05806f0
R13: 00007f5723e31f90 R14: 0000000000042f12 R15: 00007ffdf0580730
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_jindex_free+0x44e/0x450 fs/gfs2/super.c:76
Code: c8 69 8d 07 cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c e2 fd ff ff e8 42 90 0c fe e9 d8 fd ff ff e8 e8 81 8a 07 e8 f3 db a0 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6
RSP: 0018:ffffc900032c7bc0 EFLAGS: 00010293
RAX: ffffffff8424bf7d RBX: dead000000000122 RCX: ffff88803e310000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: ffffc900032c7c80 R08: ffff8880463a4e37 R09: 1ffff11008c749c6
R10: dffffc0000000000 R11: ffffed1008c749c7 R12: ffff8880463a4908
R13: dffffc0000000000 R14: ffff88804629ec00 R15: ffff88804629ec78
FS:  000055558118e500(0000) GS:ffff88808ca59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c007054000 CR3: 0000000040ad6000 CR4: 0000000000352ef0