gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7991 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7991 Comm: syz-executor325 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
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
 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:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff8880b3287728 EFLAGS: 00010282
RAX: 000000000000003a RBX: ffff8880b1a31c90 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1016650edb
RBP: ffff8880b3dc2400 R08: 000000000000003a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238c25c40
R13: ffff8880af040000 R14: ffff8880b1a31c98 R15: ffff888095745c58
gfs2: fsid=syz:syz: Now mounting FS...
 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
sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz'
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7995 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
Modules linked in:
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
CPU: 1 PID: 7995 Comm: syz-executor325 Not tainted 4.14.302-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff888095ae06c0 task.stack: ffff8880b3b98000
RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30
RSP: 0018:ffff8880b3b9f728 EFLAGS: 00010282
RAX: 000000000000003a RBX: ffff88809be45d10 RCX: 0000000000000000
 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340
RDX: 0000000000000000 RSI: ffffffff87cd1200 RDI: ffffed1016773edb
RBP: ffff888095162980 R08: 000000000000003a R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238c25c40
R13: ffff8880af216cc0 R14: ffff88809be45d18 R15: ffff88809bf51cd8
 mount_fs+0x92/0x2a0 fs/super.c:1237
FS:  0000555556649300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
CR2: 00007ff478037098 CR3: 00000000ab359000 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
 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
 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7ff1b60f69ba
RSP: 002b:00007ffc1ea23d78 EFLAGS: 00000282
 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff1b60f69ba
 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127
RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffc1ea23d90
RBP: 00007ffc1ea23d90 R08: 00007ffc1ea23dd0 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
R13: 00005555566492c0 R14: 0000000000000000 R15: 00007ffc1ea23dd0
 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: 0033:0x7ff1b60f69ba
RSP: 002b:00007ffc1ea23d78 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff1b60f69ba
RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffc1ea23d90
RBP: 00007ffc1ea23d90 R08: 00007ffc1ea23dd0 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
R13: 00005555566492c0 R14: 0000000000000000 R15: 00007ffc1ea23dd0
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 7010d43ab5600404 ]---
Kernel Offset: disabled
Rebooting in 86400 seconds..