sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' 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: 1 PID: 8001 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8001 Comm: syz-executor353 Not tainted 4.14.301-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: ------------[ cut here ]------------ __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 WARNING: CPU: 0 PID: 7997 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 panic+0x1f9/0x42d kernel/panic.c:183 Modules linked in: CPU: 0 PID: 7997 Comm: syz-executor353 Not tainted 4.14.301-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 __warn.cold+0x20/0x44 kernel/panic.c:547 task: ffff888096a88680 task.stack: ffff888095858000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff88809585f728 EFLAGS: 00010282 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 RAX: 000000000000003a RBX: ffff8880b2c3db10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012b0bedb RBP: ffff8880a0beee40 R08: 000000000000003a R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b08299a0 R13: ffff8880a9e88cc0 R14: ffff8880b2c3db18 R15: ffff8880b3379ad8 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 FS: 0000555556441300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RSP: 0018:ffff88809587f728 EFLAGS: 00010282 CR2: 00007f2910486de0 CR3: 00000000abe7e000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RAX: 000000000000003a RBX: ffff888095ae1a90 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012b0fedb DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RBP: ffff8880a3832100 R08: 000000000000003a R09: 0000000000000000 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b08299a0 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 R13: ffff8880a19adc40 R14: ffff888095ae1a98 R15: ffff888095ae9a58 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 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 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 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 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 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RIP: 0033:0x7f88877fd6aa RSP: 002b:00007ffcf04bc678 EFLAGS: 00000282 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 ORIG_RAX: 00000000000000a5 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f88877fd6aa RIP: 0033:0x7f88877fd6aa RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffcf04bc680 RSP: 002b:00007ffcf04bc678 EFLAGS: 00000282 RBP: 00007ffcf04bc680 R08: 00007ffcf04bc6c0 R09: 0000000000000002 ORIG_RAX: 00000000000000a5 R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 R13: 00005555564412c0 R14: 00007ffcf04bc6c0 R15: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f88877fd6aa Code: RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffcf04bc680 bd RBP: 00007ffcf04bc680 R08: 00007ffcf04bc6c0 R09: 0000000000000002 ea R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 ff R13: 00005555564412c0 R14: 00007ffcf04bc6c0 R15: 0000000000000000 ff ff e9 9f c3 9f fa 4c 89 ff e8 d4 e0 7a fa eb da e8 cd 1f 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 ac b6 7a fa e8 a7 1f 51 fa 4d ---[ end trace 709b8d094737b573 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..