------------[ cut here ]------------
WARNING: CPU: 0 PID: 7998 at include/linux/backing-dev.h:335 inode_to_wb include/linux/backing-dev.h:335 [inline]
WARNING: CPU: 0 PID: 7998 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7998 Comm: syz-executor.1 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:inode_to_wb include/linux/backing-dev.h:335 [inline]
RIP: 0010:account_page_dirtied+0x8df/0xbb0 mm/page-writeback.c:2437
RSP: 0018:ffff8880a013fb08 EFLAGS: 00010097
RAX: ffff88809f0ce180 RBX: ffff8880aec89440 RCX: 1ffffffff127a6e8
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000082
RBP: ffff8880b1fcc528 R08: ffffffff8ba85afc R09: 0000000000002730
R10: 0000000000000001 R11: ffff88809f0ce180 R12: ffffea0002469180
R13: ffff8880b1fcc398 R14: ffff8880b1fcc398 R15: ffffea00024691a0
 __set_page_dirty+0x77/0x2a0 fs/buffer.c:634
 mark_buffer_dirty+0x307/0x480 fs/buffer.c:1173
 gfs2_unpin+0xc7/0xeb0 fs/gfs2/lops.c:107
 buf_lo_after_commit+0x12d/0x1f0 fs/gfs2/lops.c:510
 lops_after_commit fs/gfs2/lops.h:64 [inline]
 gfs2_log_flush+0x7fc/0x1ad0 fs/gfs2/log.c:759
 gfs2_kill_sb+0x54/0x1a0 fs/gfs2/ops_fstype.c:1407
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 deactivate_super+0x7f/0xa0 fs/super.c:350
 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183
 task_work_run+0x11f/0x190 kernel/task_work.c:113
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
------------[ cut here ]------------
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
WARNING: CPU: 1 PID: 10998 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
Modules linked in:
RIP: 0033:0x7f59e799e517
CPU: 1 PID: 10998 Comm: syz-executor.5 Not tainted 4.14.302-syzkaller #0
RSP: 002b:00007ffe64c60448 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f59e799e517
task: ffff88809e9da000 task.stack: ffff88808cd88000
RDX: 00007ffe64c6051a RSI: 000000000000000a RDI: 00007ffe64c60510
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RBP: 00007ffe64c60510 R08: 00000000ffffffff R09: 00007ffe64c602e0
RSP: 0018:ffff88808cd8f728 EFLAGS: 00010282
R10: 00005555568d6903 R11: 0000000000000246 R12: 00007f59e79f7b24
R13: 00007ffe64c615d0 R14: 00005555568d6810 R15: 00007ffe64c61610
RAX: 000000000000003a RBX: ffff888046ac82d0 RCX: 0000000000000000
RDX: 000000000002da47 RSI: ffffffff814443b0 RDI: ffffed10119b1edb
RBP: ffff88808d754000 R08: 000000000000003a R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f59e00
R13: ffff8880aa770e00 R14: ffff888046ac82d8 R15: ffff888046cc8458
FS:  00007f4adf938700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555f2ef83848 CR3: 00000000b4aa7000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal+0x28b/0x930 lib/kobject.c:229
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_init_and_add+0xde/0x120 lib/kobject.c:436
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f4ae13c75da
RSP: 002b:00007f4adf937f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000003b281 RCX: 00007f4ae13c75da
RDX: 000000002003b2c0 RSI: 000000002003b300 RDI: 00007f4adf937fe0
RBP: 00007f4adf938020 R08: 00007f4adf938020 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000002003b2c0
R13: 000000002003b300 R14: 00007f4adf937fe0 R15: 0000000020000140
Code: bd ea ff ff ff e9 8f c2 9f fa 4c 89 ff e8 74 de 7a fa eb da e8 6d 1d 51 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c4 95 87 e8 e5 fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 4c b4 7a fa e8 47 1d 51 fa 4d 
---[ end trace 23125d5c9091d13b ]---
Kernel Offset: disabled
Rebooting in 86400 seconds..