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: 1 PID: 7974 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: 0 PID: 7963 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 1 PID: 7974 Comm: syz-executor222 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: 0 PID: 7963 Comm: syz-executor222 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: ffff88809fa0c3c0 task.stack: ffff888095ec8000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff888095ecf728 EFLAGS: 00010282 __warn.cold+0x20/0x44 kernel/panic.c:547 RAX: 000000000000003a RBX: ffff888097159c10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012bd9edb RBP: ffff888095562700 R08: 000000000000003a R09: 0000000000000000 report_bug+0x208/0x250 lib/bug.c:183 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823880f540 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 R13: ffff88809bcadc80 R14: ffff888097159c18 R15: ffff88809d8c9bd8 FS: 0000555556094300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffa09fdc10 CR3: 00000000a61b0000 CR4: 00000000003406f0 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RSP: 0018:ffff888096a8f728 EFLAGS: 00010282 Call Trace: sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RAX: 000000000000003a RBX: ffff888097f0dc50 RCX: 0000000000000000 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012d51edb kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RBP: ffff8880955c2680 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88823880f540 R13: ffff8880a0156cc0 R14: ffff888097f0dc58 R15: ffff888097159c18 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 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 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 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: 0033:0x7fa8fddc36ba RSP: 002b:00007ffc77ab89e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8fddc36ba RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffc77ab8a00 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 RBP: 00007ffc77ab8a00 R08: 00007ffc77ab8a40 R09: 0000000000000002 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 RIP: 0033:0x7fa8fddc36ba R13: 00005555560942c0 R14: 0000000000000000 R15: 00007ffc77ab8a40 RSP: 002b:00007ffc77ab89e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 Code: RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fa8fddc36ba bd RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007ffc77ab8a00 ea RBP: 00007ffc77ab8a00 R08: 00007ffc77ab8a40 R09: 0000000000000002 ff R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 ff R13: 00005555560942c0 R14: 0000000000000000 R15: 00007ffc77ab8a40 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 9c3e6f3f251a947a ]--- Kernel Offset: disabled Rebooting in 86400 seconds..