sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11210 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Kernel panic - not syncing: kernel: panic_on_warn set ... WARNING: CPU: 0 PID: 11214 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 1 PID: 11210 Comm: syz-executor.3 Not tainted 4.14.306-syzkaller #0 Modules linked in: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: CPU: 0 PID: 11214 Comm: syz-executor.2 Not tainted 4.14.306-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 01/21/2023 panic+0x21d/0x451 kernel/panic.c:247 task: ffff8880b4c58300 task.stack: ffff888054bd0000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff888054bd7728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880643fce50 RCX: 0000000000000000 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 RDX: 0000000000012be6 RSI: ffffffff81444380 RDI: ffffed100a97aedb __warn+0xdf/0x1e0 kernel/panic.c:603 RBP: ffff88804ecda300 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b13977e0 R13: ffff8880b43d31c0 R14: ffff8880643fce58 R15: ffff8880b4dd4e18 report_bug+0x208/0x250 lib/bug.c:183 FS: 00007fbee0edc700(0000) GS:ffff8880ba400000(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: 000055db012fc2b8 CR3: 00000000ab389000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RSP: 0018:ffff888097007728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880b4dd4e10 RCX: 0000000000000000 RDX: 000000000000bdc3 RSI: ffffffff81444380 RDI: ffffed1012e00edb gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 RBP: ffff8880549ac4c0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b13977e0 R13: ffff8880a2c03e00 R14: ffff8880b4dd4e18 R15: ffff888054a98dd8 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 mount_fs+0x92/0x2a0 fs/super.c:1237 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 RIP: 0033:0x7fbee296b62a RSP: 002b:00007fbee0edbf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000124a6 RCX: 00007fbee296b62a RDX: 00000000200124c0 RSI: 0000000020012500 RDI: 00007fbee0edbfe0 RBP: 00007fbee0edc020 R08: 00007fbee0edc020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200124c0 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 R13: 0000000020012500 R14: 00007fbee0edbfe0 R15: 0000000020012540 Code: do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 bd entry_SYSCALL_64_after_hwframe+0x5e/0xd3 ea RIP: 0033:0x7fedd043562a ff RSP: 002b:00007fedce9a5f88 EFLAGS: 00000202 ff ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 0000000000037f00 RCX: 00007fedd043562a e9 RDX: 0000000020037f00 RSI: 0000000020037f40 RDI: 00007fedce9a5fe0 af RBP: 00007fedce9a6020 R08: 00007fedce9a6020 R09: 0000000000000000 95 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020037f00 9f R13: 0000000020037f40 R14: 00007fedce9a5fe0 R15: 0000000020037f80 fa 4c 89 ff e8 14 ae 7a fa eb da e8 9d ea 50 fa 4c 89 ea 48 89 ee 48 c7 c7 80 c8 95 87 e8 fd fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 ec 83 7a fa e8 77 ea 50 fa 4d ---[ end trace e564a4492ac3d7c9 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..