gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' gfs2: fsid=syz:syz: Now mounting FS... ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7970 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: 7977 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 0 PID: 7970 Comm: syz-executor251 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: 7977 Comm: syz-executor251 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: ffff8880b4fdc2c0 task.stack: ffff8880b3fb0000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880b3fb7728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888095791bd0 RCX: 0000000000000000 __warn.cold+0x20/0x44 kernel/panic.c:547 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10167f6edb RBP: ffff8880b296c300 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0e7b620 R13: ffff8880a42bd940 R14: ffff888095791bd8 R15: ffff8880b2c7db98 report_bug+0x208/0x250 lib/bug.c:183 FS: 000055555589e300(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: 00007fffaef9af90 CR3: 00000000b3ed9000 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:ffff8880b34a7728 EFLAGS: 00010282 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RAX: 000000000000003a RBX: ffff888095799c10 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: ffffed1016694edb RBP: ffff888095cb45c0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0e7b620 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R13: ffff88809fbae700 R14: ffff888095799c18 R15: ffff888095791bd8 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 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 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: 0033:0x7fe6a55d36ca RSP: 002b:00007ffe7e1bd238 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe6a55d36ca SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffe7e1bd250 RBP: 00007ffe7e1bd250 R08: 00007ffe7e1bd290 R09: 0000000000000002 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 R13: 000055555589e2c0 R14: 0000000000000000 R15: 00007ffe7e1bd290 RIP: 0033:0x7fe6a55d36ca Code: bd RSP: 002b:00007ffe7e1bd238 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 ea RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe6a55d36ca ff RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffe7e1bd250 ff RBP: 00007ffe7e1bd250 R08: 00007ffe7e1bd290 R09: 0000000000000002 ff R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 e9 R13: 000055555589e2c0 R14: 0000000000000000 R15: 00007ffe7e1bd290 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 835b65ad28a27b7d ]--- Kernel Offset: disabled Rebooting in 86400 seconds..