[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.13' (ECDSA) to the list of known hosts. syzkaller login: [ 28.433407] gfs2: fsid=ip_vti0: Trying to join cluster "lock_nolock", "ip_vti0" [ 28.442997] gfs2: fsid=ip_vti0: Now mounting FS... [ 28.454053] sysfs: cannot create duplicate filename '/fs/gfs2/ip_vti0' [ 28.454445] sysfs: cannot create duplicate filename '/fs/gfs2/ip_vti0' [ 28.467046] sysfs: cannot create duplicate filename '/fs/gfs2/ip_vti0' [ 28.472113] sysfs: cannot create duplicate filename '/fs/gfs2/ip_vti0' [ 28.484069] gfs2: not a GFS2 filesystem [ 28.487959] ------------[ cut here ]------------ [ 28.488779] sysfs: cannot create duplicate filename '/fs/gfs2/ip_vti0' [ 28.492790] WARNING: CPU: 1 PID: 7974 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 28.492795] Kernel panic - not syncing: panic_on_warn set ... [ 28.492795] [ 28.492803] CPU: 1 PID: 7974 Comm: syz-executor289 Not tainted 4.14.260-syzkaller #0 [ 28.492813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.492816] Call Trace: [ 28.492827] dump_stack+0x1b2/0x281 [ 28.492836] panic+0x1f9/0x42d [ 28.492844] ? add_taint.cold+0x16/0x16 [ 28.503183] ------------[ cut here ]------------ [ 28.507699] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.515035] WARNING: CPU: 0 PID: 7975 at fs/sysfs/dir.c:30 sysfs_warn_dup.cold+0x17/0x26 [ 28.522975] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.532298] Modules linked in: [ 28.534862] __warn.cold+0x20/0x44 [ 28.541624] ? ist_end_non_atomic+0x10/0x10 [ 28.545565] CPU: 0 PID: 7975 Comm: syz-executor289 Not tainted 4.14.260-syzkaller #0 [ 28.550292] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.554676] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.562881] report_bug+0x208/0x250 [ 28.567261] task: ffff8880b3a920c0 task.stack: ffff888095838000 [ 28.570428] do_error_trap+0x195/0x2d0 [ 28.573940] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 28.578235] ? math_error+0x2d0/0x2d0 [ 28.586083] RSP: 0018:ffff88809583f728 EFLAGS: 00010282 [ 28.590479] ? ___preempt_schedule+0x16/0x18 [ 28.599806] RAX: 000000000000003a RBX: ffff88809d715d50 RCX: 0000000000000000 [ 28.603409] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.609429] RDX: 0000000000000000 RSI: ffffffff878bbcc0 RDI: ffffed1012b07edb [ 28.609435] RBP: ffff8880b3732140 R08: 000000000000003a R09: 0000000000000000 [ 28.613301] invalid_op+0x1b/0x40 [ 28.618288] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238c53e00 [ 28.622063] RIP: 0010:sysfs_warn_dup.cold+0x17/0x26 [ 28.627393] R13: ffff8880b3593780 R14: ffff88809d715d58 R15: ffff8880ab99dd18 [ 28.631771] RSP: 0018:ffff8880b374f728 EFLAGS: 00010282 [ 28.639030] FS: 00005555564c8300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 28.651110] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.658356] RAX: 000000000000003a RBX: ffff88809d2b1d90 RCX: 0000000000000000 [ 28.661779] CR2: 00007f48e6637000 CR3: 00000000a184a000 CR4: 00000000003406f0 [ 28.669022] RDX: 0000000000000000 RSI: ffffffff878bbcc0 RDI: ffffed10166e9edb [ 28.674011] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.681254] RBP: ffff8880b365a300 R08: 000000000000003a R09: 0000000000000000 [ 28.681260] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888238c53e00 [ 28.686595] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.694796] R13: ffff8880b3f96700 R14: ffff88809d2b1d98 R15: ffff88809d715d58 [ 28.700648] Call Trace: [ 28.707915] ? sysfs_warn_dup.cold+0x17/0x26 [ 28.715148] sysfs_create_dir_ns+0x16f/0x1d0 [ 28.722391] sysfs_create_dir_ns+0x16f/0x1d0 [ 28.729639] kobject_add_internal+0x28b/0x930 [ 28.736884] kobject_add_internal+0x28b/0x930 [ 28.744132] kobject_init_and_add+0xde/0x120 [ 28.751379] kobject_init_and_add+0xde/0x120 [ 28.758626] ? kobject_create_and_add+0x200/0x200 [ 28.761184] ? kobject_create_and_add+0x200/0x200 [ 28.765564] ? vsnprintf+0x260/0x1340 [ 28.769953] ? vsnprintf+0x260/0x1340 [ 28.774340] gfs2_sys_fs_add+0x184/0x3f0 [ 28.778809] gfs2_sys_fs_add+0x184/0x3f0 [ 28.783278] ? recover_store+0x100/0x100 [ 28.787660] ? recover_store+0x100/0x100 [ 28.792039] ? snprintf+0xa5/0xd0 [ 28.796853] ? snprintf+0xa5/0xd0 [ 28.801669] ? filemap_write_and_wait+0x86/0xa0 [ 28.805444] ? filemap_write_and_wait+0x86/0xa0 [ 28.809216] ? memcpy+0x35/0x50 [ 28.813252] ? memcpy+0x35/0x50 [ 28.817287] fill_super+0x118b/0x2310 [ 28.821320] fill_super+0x118b/0x2310 [ 28.825358] ? vsnprintf+0x260/0x1340 [ 28.828782] ? vsnprintf+0x260/0x1340 [ 28.832222] ? gfs2_online_uevent+0x1b0/0x1b0 [ 28.836876] ? gfs2_online_uevent+0x1b0/0x1b0 [ 28.841524] ? memcpy+0x35/0x50 [ 28.844770] ? memcpy+0x35/0x50 [ 28.848024] ? pointer+0x9e0/0x9e0 [ 28.851796] ? pointer+0x9e0/0x9e0 [ 28.855571] ? snprintf+0xa5/0xd0 [ 28.859344] ? snprintf+0xa5/0xd0 [ 28.863116] ? vsprintf+0x30/0x30 [ 28.867584] ? vsprintf+0x30/0x30 [ 28.872054] ? set_blocksize+0x125/0x380 [ 28.875307] ? set_blocksize+0x125/0x380 [ 28.878561] gfs2_mount+0x439/0x510 [ 28.882073] gfs2_mount+0x439/0x510 [ 28.885589] ? fill_super+0x2310/0x2310 [ 28.889013] ? fill_super+0x2310/0x2310 [ 28.892454] ? alloc_pages_current+0x15d/0x260 [ 28.895878] ? alloc_pages_current+0x15d/0x260 [ 28.899293] ? __lockdep_init_map+0x100/0x560 [ 28.903330] ? __lockdep_init_map+0x100/0x560 [ 28.907365] mount_fs+0x92/0x2a0 [ 28.910962] mount_fs+0x92/0x2a0 [ 28.914577] vfs_kern_mount.part.0+0x5b/0x470 [ 28.918519] vfs_kern_mount.part.0+0x5b/0x470 [ 28.922467] do_mount+0xe65/0x2a10 [ 28.927283] do_mount+0xe65/0x2a10 [ 28.931841] ? retint_kernel+0x2d/0x2d [ 28.936309] ? retint_kernel+0x2d/0x2d [ 28.940776] ? copy_mount_string+0x40/0x40 [ 28.944112] ? copy_mount_string+0x40/0x40 [ 28.947451] ? memset+0x20/0x40 [ 28.951915] ? memset+0x20/0x40 [ 28.956382] ? copy_mount_options+0x1fa/0x2f0 [ 28.959893] ? copy_mount_options+0x1fa/0x2f0 [ 28.963404] ? copy_mnt_ns+0xa30/0xa30 [ 28.967263] ? copy_mnt_ns+0xa30/0xa30 [ 28.971122] SyS_mount+0xa8/0x120 [ 28.975331] SyS_mount+0xa8/0x120 [ 28.979539] ? copy_mnt_ns+0xa30/0xa30 [ 28.982788] ? copy_mnt_ns+0xa30/0xa30 [ 28.986041] do_syscall_64+0x1d5/0x640 [ 28.990508] do_syscall_64+0x1d5/0x640 [ 28.994980] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.998841] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.002699] RIP: 0033:0x7ff88ad3fb3a [ 29.006122] RIP: 0033:0x7ff88ad3fb3a [ 29.009545] RSP: 002b:00007ffc1afdc538 EFLAGS: 00000282 [ 29.013404] RSP: 002b:00007ffc1afdc538 EFLAGS: 00000282 [ 29.017264] ORIG_RAX: 00000000000000a5 [ 29.021121] ORIG_RAX: 00000000000000a5 [ 29.024980] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff88ad3fb3a [ 29.030148] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff88ad3fb3a [ 29.030154] RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc1afdc540 [ 29.035317] RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc1afdc540 [ 29.039000] RBP: 00007ffc1afdc540 R08: 00007ffc1afdc580 R09: 0000000000000002 [ 29.039006] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 29.042690] RBP: 00007ffc1afdc540 R08: 00007ffc1afdc580 R09: 0000000000000002 [ 29.048024] R13: 0000000000000000 R14: 00007ffc1afdc580 R15: 00007ffc1afdc6d0 [ 29.053359] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004 [ 29.126565] R13: 0000000000000000 R14: 00007ffc1afdc580 R15: 00007ffc1afdc6d0 [ 29.133826] Code: bd ea ff ff ff e9 d3 4b a0 fa 4c 89 ff e8 48 75 7b fa eb da e8 11 c6 51 fa 4c 89 ea 48 89 ee 48 c7 c7 40 ae 95 87 e8 ce fd fe ff <0f> 0b 48 89 ef 5d 41 5c 41 5d e9 f0 4a 7b fa e8 eb c5 51 fa 4d [ 29.153012] ---[ end trace 591655744e92577e ]--- [ 29.158018] Kernel Offset: disabled [ 29.161667] Rebooting in 86400 seconds..