sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' gfs2: fsid=syz:syz: Now mounting FS... sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ ------------[ cut here ]------------ WARNING: CPU: 0 PID: 7984 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 WARNING: CPU: 1 PID: 7990 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: 7984 Comm: syz-executor341 Not tainted 4.14.302-syzkaller #0 CPU: 1 PID: 7990 Comm: syz-executor341 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: ffff8880b379e300 task.stack: ffff88808c848000 __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:ffff88808c84f728 EFLAGS: 00010282 RAX: 000000000000003a RBX: ffff888095651ad0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1011909edb RBP: ffff8880b12706c0 R08: 000000000000003a R09: 0000000000000000 __warn.cold+0x20/0x44 kernel/panic.c:547 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f8da80 R13: ffff8880b613a540 R14: ffff888095651ad8 R15: ffff888095001a98 FS: 0000555556427300(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: 00007ffc2cfdfc98 CR3: 00000000b4ccf000 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:ffff8880b34e7728 EFLAGS: 00010282 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RAX: 000000000000003a RBX: ffff8880957d1b10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed101669cedb RBP: ffff8880957089c0 R08: 000000000000003a R09: 0000000000000000 gfs2_sys_fs_add+0x184/0x3f0 fs/gfs2/sys.c:652 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b0f8da80 R13: ffff8880b0585240 R14: ffff8880957d1b18 R15: ffff888095651ad8 sysfs_create_dir_ns+0x16f/0x1d0 fs/sysfs/dir.c:59 fill_super+0x118b/0x2310 fs/gfs2/ops_fstype.c:1127 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 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f34777b96da RSP: 002b:00007ffde225df78 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34777b96da RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffde225df90 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 RBP: 00007ffde225df90 R08: 00007ffde225dfd0 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 R13: 00005555564272c0 R14: 0000000000000000 R15: 00007ffde225dfd0 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 Code: entry_SYSCALL_64_after_hwframe+0x5e/0xd3 bd RIP: 0033:0x7f34777b96da ea RSP: 002b:00007ffde225df78 EFLAGS: 00000282 ff ORIG_RAX: 00000000000000a5 ff RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f34777b96da ff RDX: 0000000020037f40 RSI: 0000000020037f80 RDI: 00007ffde225df90 e9 RBP: 00007ffde225df90 R08: 00007ffde225dfd0 R09: 0000000000000002 8f R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 c2 R13: 00005555564272c0 R14: 0000000000000000 R15: 00007ffde225dfd0 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 5bf1c81df28c2300 ]--- Kernel Offset: disabled Rebooting in 86400 seconds..