gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS... sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7984 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: 7982 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 CPU: 1 PID: 7984 Comm: syz-executor250 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: 7982 Comm: syz-executor250 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: ffff88809cace680 task.stack: ffff8880b3028000 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 RSP: 0018:ffff8880b302f728 EFLAGS: 00010282 __warn.cold+0x20/0x44 kernel/panic.c:547 RAX: 000000000000003a RBX: ffff8880955bdd50 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1016605edb RBP: ffff888095714180 R08: 000000000000003a R09: 0000000000000000 report_bug+0x208/0x250 lib/bug.c:183 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238ffa000 R13: ffff8880a9d91980 R14: ffff8880955bdd58 R15: ffff8880b2b01d18 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 FS: 0000555556c99300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc865804290 CR3: 000000009a550000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 fs/sysfs/dir.c:30 Call Trace: RSP: 0018:ffff8880b3127728 EFLAGS: 00010282 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 RAX: 000000000000003a RBX: ffff8880b2b01d10 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff878bd020 RDI: ffffed1016624edb kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xde/0x120 lib/kobject.c:436 RBP: ffff8880b198a8c0 R08: 000000000000003a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238ffa000 R13: ffff8880b3f83600 R14: ffff8880b2b01d18 R15: ffff8880b1ac9cd8 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 gfs2_mount+0x439/0x510 fs/gfs2/ops_fstype.c:1340 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 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: 0033:0x7f6c13a7a6ea RSP: 002b:00007fffda057c38 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: 00007f6c13a7a6ea RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007fffda057c50 RBP: 00007fffda057c50 R08: 00007fffda057c90 R09: 0000000000000002 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 R13: 0000555556c992c0 R14: 0000000000000000 R15: 00007fffda057c90 RIP: 0033:0x7f6c13a7a6ea Code: RSP: 002b:00007fffda057c38 EFLAGS: 00000282 bd ORIG_RAX: 00000000000000a5 ea RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6c13a7a6ea ff RDX: 00000000200124c0 RSI: 0000000020000040 RDI: 00007fffda057c50 ff RBP: 00007fffda057c50 R08: 00007fffda057c90 R09: 0000000000000002 ff R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 R13: 0000555556c992c0 R14: 0000000000000000 R15: 00007fffda057c90 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 4161fe9eaa3ecb9a ]--- Kernel Offset: disabled Rebooting in 86400 seconds..