sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8006 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 WARNING: CPU: 1 PID: 8005 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 Kernel panic - not syncing: panic_on_warn set ... Modules linked in: CPU: 0 PID: 8006 Comm: syz-executor921 Not tainted 4.14.215-syzkaller #0 CPU: 1 PID: 8005 Comm: syz-executor921 Not tainted 4.14.215-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 task: ffff888095a42380 task.stack: ffff888095ae0000 panic+0x1f9/0x42d kernel/panic.c:183 RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 RSP: 0018:ffff888095ae7728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff8880b1984e10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bbb40 RDI: ffffed1012b5cedb __warn.cold+0x20/0x4b kernel/panic.c:547 RBP: ffff8880b101a800 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238e68d20 R13: ffff8880b2b154c0 R14: ffff8880b1984e18 R15: ffff8880b2a70dd8 FS: 0000000000e59880(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 report_bug+0x208/0x249 lib/bug.c:186 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: 000055d7244aa0d8 CR3: 0000000097825000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 RIP: 0010:sysfs_warn_dup.cold+0x17/0x2d fs/sysfs/dir.c:30 create_dir lib/kobject.c:71 [inline] kobject_add_internal+0x28b/0x930 lib/kobject.c:229 RSP: 0018:ffff8880b2c07728 EFLAGS: 00010282 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RAX: 000000000000003a RBX: ffff8880b2a70dd0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bbb40 RDI: ffffed1016580edb gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 RBP: ffff88809114c240 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238e68d20 R13: ffff8880b192c3c0 R14: ffff8880b2a70dd8 R15: ffff8880b2a58d98 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1122 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+0x439/0x502 fs/gfs2/ops_fstype.c:1335 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1122 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:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 gfs2_mount+0x439/0x502 fs/gfs2/ops_fstype.c:1335 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 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+0x46/0xbb vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 RIP: 0033:0x45c56a RSP: 002b:00007ffeb9240e28 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffeb9240e80 RCX: 000000000045c56a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffeb9240e40 RBP: 00007ffeb9240e40 R08: 00007ffeb9240e80 R09: 0000000000000000 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 Code: do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 29 entry_SYSCALL_64_after_hwframe+0x46/0xbb f2 RIP: 0033:0x45c56a 8b RSP: 002b:00007ffeb9240e28 EFLAGS: 00000293 e8 ORIG_RAX: 00000000000000a5 79 RAX: ffffffffffffffda RBX: 00007ffeb9240e80 RCX: 000000000045c56a 05 RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffeb9240e40 db RBP: 00007ffeb9240e40 R08: 00007ffeb9240e80 R09: 0000000000000000 ff R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000091c eb R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 d8 e8 72 05 db ff e9 6d ff ff ff e8 e8 18 b1 ff 4c 89 ea 48 89 ee 48 c7 c7 e0 a8 95 87 e8 a7 a5 9f ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 87 da da ff 90 90 90 90 90 90 ---[ end trace 2fd0c449f3182e55 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..