Warning: Permanently added '10.128.1.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.096063] FAULT_INJECTION: forcing a failure. [ 31.096063] name failslab, interval 1, probability 0, space 0, times 1 [ 31.107688] CPU: 1 PID: 7986 Comm: syz-executor279 Not tainted 4.14.281-syzkaller #0 [ 31.115550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.124883] Call Trace: [ 31.127447] dump_stack+0x1b2/0x281 [ 31.131051] should_fail.cold+0x10a/0x149 [ 31.135178] should_failslab+0xd6/0x130 [ 31.139124] __kmalloc+0x2c1/0x400 [ 31.142636] ? register_shrinker+0x1ab/0x220 [ 31.147016] register_shrinker+0x1ab/0x220 [ 31.151228] sget_userns+0x9aa/0xc10 [ 31.154911] ? set_bdev_super+0x110/0x110 [ 31.159031] ? ns_test_super+0x50/0x50 [ 31.162894] ? set_bdev_super+0x110/0x110 [ 31.167012] ? ns_test_super+0x50/0x50 [ 31.170871] sget+0xd1/0x110 [ 31.173870] mount_bdev+0xcd/0x360 [ 31.177383] ? fuse_get_root_inode+0xc0/0xc0 [ 31.181765] mount_fs+0x92/0x2a0 [ 31.185106] vfs_kern_mount.part.0+0x5b/0x470 [ 31.189582] do_mount+0xe65/0x2a30 [ 31.193094] ? lock_acquire+0x170/0x3f0 [ 31.197044] ? lock_downgrade+0x740/0x740 [ 31.201163] ? copy_mount_string+0x40/0x40 [ 31.205367] ? __might_fault+0x177/0x1b0 [ 31.209400] ? _copy_from_user+0x96/0x100 [ 31.213522] ? copy_mount_options+0x1fa/0x2f0 [ 31.218000] ? copy_mnt_ns+0xa30/0xa30 [ 31.221882] SyS_mount+0xa8/0x120 [ 31.225325] ? copy_mnt_ns+0xa30/0xa30 [ 31.229189] do_syscall_64+0x1d5/0x640 [ 31.233061] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.238226] RIP: 0033:0x7fdaddc9c1a9 [ 31.241911] RSP: 002b:00007ffc3e68fbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 31.249594] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdaddc9c1a9 [ 31.256836] RDX: 00000000200002c0 RSI: 0000000020000200 RDI: 00000000200001c0 [ 31.264081] RBP: 00007ffc3e68fbc0 R08: 0000000000000000 R09: 00007fdadd003231 [ 31.271323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 31.278569] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.286758] ------------[ cut here ]------------ [ 31.291585] WARNING: CPU: 1 PID: 7986 at fs/super.c:1163 kill_block_super+0xbe/0xe0 [ 31.299370] Kernel panic - not syncing: panic_on_warn set ... [ 31.299370] [ 31.306795] CPU: 1 PID: 7986 Comm: syz-executor279 Not tainted 4.14.281-syzkaller #0 [ 31.314646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.323973] Call Trace: [ 31.326534] dump_stack+0x1b2/0x281 [ 31.330135] panic+0x1f9/0x42d [ 31.333300] ? add_taint.cold+0x16/0x16 [ 31.337246] ? kill_block_super+0xbe/0xe0 [ 31.341368] ? kill_block_super+0xbe/0xe0 [ 31.345486] __warn.cold+0x20/0x44 [ 31.348998] ? ist_end_non_atomic+0x10/0x10 [ 31.353291] ? kill_block_super+0xbe/0xe0 [ 31.357412] report_bug+0x208/0x250 [ 31.361013] do_error_trap+0x195/0x2d0 [ 31.364871] ? math_error+0x2d0/0x2d0 [ 31.368641] ? retint_kernel+0x2d/0x2d [ 31.372503] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.377318] invalid_op+0x1b/0x40 [ 31.380748] RIP: 0010:kill_block_super+0xbe/0xe0 [ 31.385472] RSP: 0018:ffff8880b3037bc8 EFLAGS: 00010297 [ 31.390810] RAX: ffff8880969f4180 RBX: 0000000000000000 RCX: 1ffff11012d3e946 [ 31.398053] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880a4c17c30 [ 31.405295] RBP: ffff8880b37b27c0 R08: ffffffff8b9cc160 R09: 0000000000000001 [ 31.412536] R10: 0000000000000000 R11: ffff8880969f4180 R12: ffff8880a4c17780 [ 31.419779] R13: ffffffff891e9e70 R14: ffffffff88f45500 R15: dffffc0000000000 [ 31.427032] ? kill_block_super+0xbe/0xe0 [ 31.431153] deactivate_locked_super+0x6c/0xd0 [ 31.435722] sget_userns+0x9c4/0xc10 [ 31.439411] ? set_bdev_super+0x110/0x110 [ 31.443536] ? ns_test_super+0x50/0x50 [ 31.447423] ? set_bdev_super+0x110/0x110 [ 31.451547] ? ns_test_super+0x50/0x50 [ 31.455406] sget+0xd1/0x110 [ 31.458399] mount_bdev+0xcd/0x360 [ 31.461925] ? fuse_get_root_inode+0xc0/0xc0 [ 31.466310] mount_fs+0x92/0x2a0 [ 31.469654] vfs_kern_mount.part.0+0x5b/0x470 [ 31.474122] do_mount+0xe65/0x2a30 [ 31.477635] ? lock_acquire+0x170/0x3f0 [ 31.481579] ? lock_downgrade+0x740/0x740 [ 31.485709] ? copy_mount_string+0x40/0x40 [ 31.489914] ? __might_fault+0x177/0x1b0 [ 31.493952] ? _copy_from_user+0x96/0x100 [ 31.498071] ? copy_mount_options+0x1fa/0x2f0 [ 31.502555] ? copy_mnt_ns+0xa30/0xa30 [ 31.506424] SyS_mount+0xa8/0x120 [ 31.509869] ? copy_mnt_ns+0xa30/0xa30 [ 31.513740] do_syscall_64+0x1d5/0x640 [ 31.517604] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.522777] RIP: 0033:0x7fdaddc9c1a9 [ 31.526470] RSP: 002b:00007ffc3e68fbb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 31.534157] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdaddc9c1a9 [ 31.541398] RDX: 00000000200002c0 RSI: 0000000020000200 RDI: 00000000200001c0 [ 31.548728] RBP: 00007ffc3e68fbc0 R08: 0000000000000000 R09: 00007fdadd003231 [ 31.555970] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 31.563222] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.570757] Kernel Offset: disabled [ 31.574408] Rebooting in 86400 seconds..