Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. syzkaller login: [ 31.174389] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.177177] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 31.194643] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.196527] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.206302] ------------[ cut here ]------------ [ 31.209740] sysfs: cannot create duplicate filename '/fs/gfs2/syz:syz' [ 31.212774] WARNING: CPU: 1 PID: 7976 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 31.212779] Kernel panic - not syncing: panic_on_warn set ... [ 31.212779] [ 31.212787] CPU: 1 PID: 7976 Comm: syz-executor365 Not tainted 4.14.282-syzkaller #0 [ 31.212790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.212793] Call Trace: [ 31.212804] dump_stack+0x1b2/0x281 [ 31.212814] panic+0x1f9/0x42d [ 31.212820] ? add_taint.cold+0x16/0x16 [ 31.212830] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.212840] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.220115] ------------[ cut here ]------------ [ 31.227717] __warn.cold+0x20/0x44 [ 31.235058] WARNING: CPU: 0 PID: 7979 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 31.242911] ? ist_end_non_atomic+0x10/0x10 [ 31.252232] Modules linked in: [ 31.254801] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.261568] report_bug+0x208/0x250 [ 31.265513] CPU: 0 PID: 7979 Comm: syz-executor365 Not tainted 4.14.282-syzkaller #0 [ 31.269897] do_error_trap+0x195/0x2d0 [ 31.274272] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.279003] ? math_error+0x2d0/0x2d0 [ 31.282516] task: ffff888097506680 task.stack: ffff888095e70000 [ 31.290724] ? ___preempt_schedule+0x16/0x18 [ 31.295020] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 31.298194] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.302571] RSP: 0018:ffff888095e77728 EFLAGS: 00010282 [ 31.306178] invalid_op+0x1b/0x40 [ 31.314045] RAX: 000000000000003a RBX: ffff8880b31b5b90 RCX: 0000000000000000 [ 31.317912] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 31.327237] RDX: 0000000000000000 RSI: ffffffff878bc600 RDI: ffffed1012bceedb [ 31.331012] RSP: 0018:ffff88808fec7728 EFLAGS: 00010282 [ 31.337062] RBP: ffff888095f406c0 R08: 000000000000003a R09: 0000000000000001 [ 31.341445] RAX: 000000000000003a RBX: ffff888095f55ad0 RCX: 0000000000000000 [ 31.346434] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b1327000 [ 31.351249] RDX: 0000000000000000 RSI: ffffffff878bc600 RDI: ffffed1011fd8edb [ 31.351254] RBP: ffff8880b3796dc0 R08: 000000000000003a R09: 0000000000000000 [ 31.356605] R13: ffff88809f55b340 R14: ffff8880b31b5b98 R15: ffff8880b4e49b58 [ 31.360029] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b1327000 [ 31.360036] R13: ffff8880b49ffa80 R14: ffff888095f55ad8 R15: ffff8880958cdb18 [ 31.367284] FS: 00005555573ce300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 31.372284] ? sysfs_warn_dup.cold+0x17/0x26 [ 31.379536] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.385002] sysfs_create_dir_ns+0x16f/0x1d0 [ 31.392257] CR2: 00007f58d9f12a30 CR3: 0000000096829000 CR4: 00000000003406f0 [ 31.392264] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.399515] kobject_add_internal+0x28b/0x930 [ 31.406763] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.414101] kobject_init_and_add+0xde/0x120 [ 31.421340] Call Trace: [ 31.428592] ? kobject_create_and_add+0x200/0x200 [ 31.435838] sysfs_create_dir_ns+0x16f/0x1d0 [ 31.443096] ? vsnprintf+0x260/0x1340 [ 31.451299] kobject_add_internal+0x28b/0x930 [ 31.455684] gfs2_sys_fs_add+0x184/0x3f0 [ 31.461540] kobject_init_and_add+0xde/0x120 [ 31.465930] ? recover_store+0x100/0x100 [ 31.473267] ? kobject_create_and_add+0x200/0x200 [ 31.480530] ? snprintf+0xa5/0xd0 [ 31.485000] ? vsnprintf+0x260/0x1340 [ 31.492250] ? memcpy+0x35/0x50 [ 31.496632] gfs2_sys_fs_add+0x184/0x3f0 [ 31.499200] fill_super+0x118b/0x2310 [ 31.504018] ? recover_store+0x100/0x100 [ 31.508402] ? vsnprintf+0x260/0x1340 [ 31.512174] ? snprintf+0xa5/0xd0 [ 31.516641] ? gfs2_online_uevent+0x1b0/0x1b0 [ 31.520677] ? memcpy+0x35/0x50 [ 31.525058] ? pointer+0x9e0/0x9e0 [ 31.529092] fill_super+0x118b/0x2310 [ 31.533910] ? snprintf+0xa5/0xd0 [ 31.537336] ? vsnprintf+0x260/0x1340 [ 31.541123] ? vsprintf+0x30/0x30 [ 31.544378] ? gfs2_online_uevent+0x1b0/0x1b0 [ 31.548411] ? gfs2_open+0x160/0x160 [ 31.552183] ? pointer+0x9e0/0x9e0 [ 31.556218] ? set_blocksize+0x125/0x380 [ 31.559994] ? snprintf+0xa5/0xd0 [ 31.563424] gfs2_mount+0x439/0x510 [ 31.567893] ? vsprintf+0x30/0x30 [ 31.571148] ? fill_super+0x2310/0x2310 [ 31.574660] ? gfs2_open+0x160/0x160 [ 31.578471] ? alloc_pages_current+0x15d/0x260 [ 31.581884] ? set_blocksize+0x125/0x380 [ 31.585658] ? __lockdep_init_map+0x100/0x560 [ 31.589085] gfs2_mount+0x439/0x510 [ 31.593552] mount_fs+0x92/0x2a0 [ 31.597242] ? fill_super+0x2310/0x2310 [ 31.600777] vfs_kern_mount.part.0+0x5b/0x470 [ 31.604838] ? alloc_pages_current+0x15d/0x260 [ 31.608257] do_mount+0xe65/0x2a30 [ 31.611858] ? __lockdep_init_map+0x100/0x560 [ 31.615285] ? do_raw_spin_unlock+0x164/0x220 [ 31.619231] mount_fs+0x92/0x2a0 [ 31.622924] ? copy_mount_string+0x40/0x40 [ 31.627482] vfs_kern_mount.part.0+0x5b/0x470 [ 31.631518] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 31.635985] do_mount+0xe65/0x2a30 [ 31.639588] ? copy_mnt_ns+0xa30/0xa30 [ 31.642929] ? retint_kernel+0x2d/0x2d [ 31.646875] ? copy_mount_options+0x1fa/0x2f0 [ 31.651344] ? copy_mount_string+0x40/0x40 [ 31.655901] ? copy_mnt_ns+0xa30/0xa30 [ 31.659432] ? copy_mount_options+0x15a/0x2f0 [ 31.663903] SyS_mount+0xa8/0x120 [ 31.668385] ? copy_mount_options+0x1fa/0x2f0 [ 31.671724] ? copy_mnt_ns+0xa30/0xa30 [ 31.675944] ? copy_mnt_ns+0xa30/0xa30 [ 31.680411] do_syscall_64+0x1d5/0x640 [ 31.685398] SyS_mount+0xa8/0x120 [ 31.688914] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.692773] ? copy_mnt_ns+0xa30/0xa30 [ 31.696670] RIP: 0033:0x7f58d9ee449a [ 31.701154] do_syscall_64+0x1d5/0x640 [ 31.705359] RSP: 002b:00007ffcbceeb7d8 EFLAGS: 00000282 [ 31.709234] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.713695] ORIG_RAX: 00000000000000a5 [ 31.717123] RIP: 0033:0x7f58d9ee449a [ 31.721592] RAX: ffffffffffffffda RBX: 00007ffcbceeb830 RCX: 00007f58d9ee449a [ 31.725453] RSP: 002b:00007ffcbceeb7d8 EFLAGS: 00000282 [ 31.729314] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcbceeb7f0 [ 31.733179] ORIG_RAX: 00000000000000a5 [ 31.733187] RAX: ffffffffffffffda RBX: 00007ffcbceeb830 RCX: 00007f58d9ee449a [ 31.736625] RBP: 00007ffcbceeb7f0 R08: 00007ffcbceeb830 R09: 0000000000000002 [ 31.741796] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcbceeb7f0 [ 31.745659] R10: 0000000000000000 R11: 0000000000000282 R12: 000000002000dca0 [ 31.749342] RBP: 00007ffcbceeb7f0 R08: 00007ffcbceeb830 R09: 0000000000000002 [ 31.749348] R10: 0000000000000000 R11: 0000000000000282 R12: 000000002000dca0 [ 31.753213] R13: 0000000000000003 R14: 0000000000000004 R15: 000000000000091c [ 31.845957] R13: 0000000000000003 R14: 0000000000000004 R15: 000000000000091c [ 31.853232] Code: bd ea ff ff ff e9 db e6 9f fa 4c 89 ff e8 10 09 7b fa eb da e8 69 50 51 fa 4c 89 ea 48 89 ee 48 c7 c7 c0 b8 95 87 e8 ff fb fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 b8 de 7a fa e8 43 50 51 fa 4d [ 31.872430] ---[ end trace 39a465c0477931ba ]--- [ 31.877356] Kernel Offset: disabled [ 31.881015] Rebooting in 86400 seconds..