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 ]------------ ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7966 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 WARNING: CPU: 1 PID: 7962 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 ... Modules linked in: CPU: 0 PID: 7966 Comm: syz-executor391 Not tainted 4.14.302-syzkaller #0 CPU: 1 PID: 7962 Comm: syz-executor391 Not tainted 4.14.302-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: task: ffff888095b1c400 task.stack: ffff888096338000 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 panic+0x1f9/0x42d kernel/panic.c:183 RSP: 0018:ffff88809633f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff88809dca9c90 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1012c67edb __warn.cold+0x20/0x44 kernel/panic.c:547 RBP: ffff8880b1824300 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f76460 R13: ffff8880b6124a00 R14: ffff88809dca9c98 R15: ffff8880900d1c18 FS: 0000555555e83300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 report_bug+0x208/0x250 lib/bug.c:183 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 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 CR2: 000055671389917f CR3: 0000000097d31000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RSP: 0018:ffff8880b4797728 EFLAGS: 00010282 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RAX: 000000000000003a RBX: ffff8880900d1c10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed10168f2edb RBP: ffff8880b3622840 R08: 000000000000003a R09: 0000000000000000 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f76460 R13: ffff8880b2900a80 R14: ffff8880900d1c18 R15: ffff8880900d9c58 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: 0033:0x7f34611626aa RSP: 002b:00007ffd07518b88 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34611626aa RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffd07518b90 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RBP: 00007ffd07518b90 R08: 00007ffd07518bd0 R09: 0000000000000002 R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R13: 0000555555e832c0 R14: 00007ffd07518bd0 R15: 0000000000000000 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 Code: RIP: 0033:0x7f34611626aa bd RSP: 002b:00007ffd07518b88 EFLAGS: 00000282 ea ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34611626aa ff RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007ffd07518b90 ff RBP: 00007ffd07518b90 R08: 00007ffd07518bd0 R09: 0000000000000002 e9 R10: 000000000020400f R11: 0000000000000282 R12: 0000000000000004 8f R13: 0000555555e832c0 R14: 00007ffd07518bd0 R15: 0000000000000000 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 d6b714d939d1b86b ]--- Kernel Offset: disabled Rebooting in 86400 seconds..