gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS... sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7985 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 ------------[ cut here ]------------ Kernel panic - not syncing: panic_on_warn set ... WARNING: CPU: 1 PID: 7984 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 0 PID: 7985 Comm: syz-executor258 Not tainted 4.14.302-syzkaller #0 Modules linked in: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: CPU: 1 PID: 7984 Comm: syz-executor258 Not tainted 4.14.302-syzkaller #0 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 panic+0x1f9/0x42d kernel/panic.c:183 task: ffff888095cb4340 task.stack: ffff8880966b8000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880966bf728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888095f51d10 RCX: 0000000000000000 __warn.cold+0x20/0x44 kernel/panic.c:547 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012cd7edb RBP: ffff8880957f0400 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238fa1e00 R13: ffff8880b191ed00 R14: ffff888095f51d18 R15: ffff888095475c98 report_bug+0x208/0x250 lib/bug.c:183 FS: 0000555556eb7300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 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 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560723de6540 CR3: 00000000b04a9000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 Call Trace: RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RSP: 0018:ffff888095e5f728 EFLAGS: 00010282 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RAX: 000000000000003a RBX: ffff8880b18e5cd0 RCX: 0000000000000000 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012bcbedb RBP: ffff8880b2f8a940 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238fa1e00 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R13: ffff8880b6119100 R14: ffff8880b18e5cd8 R15: ffff888095f51d18 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 mount_fs+0x92/0x2a0 fs/super.c:1237 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 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 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fc82e85779a RSP: 002b:00007ffe5cd13888 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc82e85779a SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffe5cd138a0 RBP: 00007ffe5cd138a0 R08: 00007ffe5cd138e0 R09: 0000000000000002 R10: 0000000000000002 R11: 0000000000000282 R12: 0000000000000004 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R13: 0000555556eb72c0 R14: 0000000000000002 R15: 00007ffe5cd138e0 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 Code: RIP: 0033:0x7fc82e85779a bd RSP: 002b:00007ffe5cd13888 EFLAGS: 00000282 ea ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc82e85779a ff RDX: 00000000200124c0 RSI: 0000000020000000 RDI: 00007ffe5cd138a0 ff RBP: 00007ffe5cd138a0 R08: 00007ffe5cd138e0 R09: 0000000000000002 e9 R10: 0000000000000002 R11: 0000000000000282 R12: 0000000000000004 8f R13: 0000555556eb72c0 R14: 0000000000000002 R15: 00007ffe5cd138e0 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 7dfd2c3ad9012004 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..