loop0: detected capacity change from 0 to 32768
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
gfs2: fsid=syz:syz.0: journal 0 mapped with 9 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: found 1 quota changes
syz.0.0: attempt to access beyond end of device
loop0: rw=8402945, sector=68719479080, nr_sectors = 8 limit=32768
Buffer I/O error on dev loop0, logical block 8589934885, lost async page write
syz.0.0: attempt to access beyond end of device
loop0: rw=8400896, sector=68719479080, nr_sectors = 8 limit=32768
gfs2: fsid=syz:syz.0: fatal: I/O error - block = 8589934885, function = gfs2_ail1_empty_one, file = fs/gfs2/log.c, line = 326
CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 gfs2_withdraw+0xc3/0x1b0 fs/gfs2/util.c:250
 gfs2_ail1_empty_one fs/gfs2/log.c:326 [inline]
 gfs2_ail1_empty+0x2ba/0x7c0 fs/gfs2/log.c:360
 gfs2_flush_revokes+0x5c/0x80 fs/gfs2/log.c:804
 revoke_lo_before_commit+0x2f/0xe60 fs/gfs2/lops.c:853
 lops_before_commit fs/gfs2/lops.h:42 [inline]
 gfs2_log_flush+0xa48/0x24c0 fs/gfs2/log.c:1095
 gfs2_trans_end+0x37c/0x570 fs/gfs2/trans.c:163
 setattr_chown+0x443/0x570 fs/gfs2/inode.c:2067
 gfs2_setattr+0x217/0x3f0 fs/gfs2/inode.c:2114
 notify_change+0xc1a/0xf40 fs/attr.c:546
 chown_common+0x40c/0x5b0 fs/open.c:788
 vfs_fchown fs/open.c:856 [inline]
 ksys_fchown+0xea/0x160 fs/open.c:868
 __do_sys_fchown fs/open.c:873 [inline]
 __se_sys_fchown fs/open.c:871 [inline]
 __x64_sys_fchown+0x7a/0x90 fs/open.c:871
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb26b18f7c9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb26c04a038 EFLAGS: 00000246 ORIG_RAX: 000000000000005d
RAX: ffffffffffffffda RBX: 00007fb26b3e5fa0 RCX: 00007fb26b18f7c9
RDX: 000000000000ee01 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 00007fb26b213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb26b3e6038 R14: 00007fb26b3e5fa0 R15: 00007ffd90d2db98
 </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: 5334 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:gfs2_jindex_free+0x43e/0x440 fs/gfs2/super.c:76
Code: cc cc cc cc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ea fd ff ff e8 62 98 20 fe e9 e0 fd ff ff e8 08 b0 54 07 e8 13 b1 b8 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:ffffc9000ef3fba0 EFLAGS: 00010283
RAX: ffffffff840910dd RBX: dead000000000122 RCX: 0000000000100000
RDX: ffffc90020802000 RSI: 00000000000232fa RDI: 00000000000232fb
RBP: ffffc9000ef3fc60 R08: ffff888033c7ce37 R09: 1ffff1100678f9c6
R10: dffffc0000000000 R11: ffffed100678f9c7 R12: ffff888033c7c908
R13: dffffc0000000000 R14: ffff8880332ba700 R15: ffff8880332ba778
FS:  00007fb26c04a6c0(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563089fcfa18 CR3: 0000000040424000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_put_super+0x7d9/0x860 fs/gfs2/super.c:636
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1722
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318
 task_work_run+0x1d4/0x260 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:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __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_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2d0/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb26b18f7c9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb26c04a038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fb26b3e5fa0 RCX: 00007fb26b18f7c9
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: 00007fb26b213f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb26b3e6038 R14: 00007fb26b3e5fa0 R15: 00007ffd90d2db98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_jindex_free+0x43e/0x440 fs/gfs2/super.c:76
Code: cc cc cc cc cc 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c ea fd ff ff e8 62 98 20 fe e9 e0 fd ff ff e8 08 b0 54 07 e8 13 b1 b8 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:ffffc9000ef3fba0 EFLAGS: 00010283
RAX: ffffffff840910dd RBX: dead000000000122 RCX: 0000000000100000
RDX: ffffc90020802000 RSI: 00000000000232fa RDI: 00000000000232fb
RBP: ffffc9000ef3fc60 R08: ffff888033c7ce37 R09: 1ffff1100678f9c6
R10: dffffc0000000000 R11: ffffed100678f9c7 R12: ffff888033c7c908
R13: dffffc0000000000 R14: ffff8880332ba700 R15: ffff8880332ba778
FS:  00007fb26c04a6c0(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563089fcfa18 CR3: 0000000040424000 CR4: 0000000000352ef0