[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 25.332339] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c[ 25.517281] random: sshd: uninitialized urandom read (32 bytes read) . [ 25.998194] random: sshd: uninitialized urandom read (32 bytes read) [ 26.587989] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.811365] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts. [ 33.802160] random: sshd: uninitialized urandom read (32 bytes read) [ 33.960760] IPVS: ftp: loaded support on port[0] = 21 [ 33.960995] IPVS: ftp: loaded support on port[0] = 21 [ 33.981301] IPVS: ftp: loaded support on port[0] = 21 [ 33.984627] kasan: CONFIG_KASAN_INLINE enabled [ 33.991283] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.998823] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 34.005075] CPU: 0 PID: 5559 Comm: syz-executor249 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 34.005516] kobject: 'queues' (000000004685621f): kobject_add_internal: parent: 'lo', set: '' [ 34.013658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.013682] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 34.013696] Code: 4c 8d b3 98 00 00 00 4d 85 ed 0f 84 d1 00 00 00 e8 6b 44 3f fe 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 34.013703] RSP: 0018:ffff8801bb79f928 EFLAGS: 00010206 [ 34.027684] kobject: 'queues' (000000004685621f): kobject_uevent_env [ 34.033126] RAX: dffffc0000000000 RBX: ffff8801cc32ae00 RCX: ffffffff8160aca1 [ 34.033135] RDX: 00000000001aa08d RSI: ffffffff833deb15 RDI: 0000000000d50468 [ 34.033144] RBP: ffff8801bb79f948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 34.033152] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7ab12c0 [ 34.033160] R13: 0000000000d50460 R14: ffff8801cc32ae98 R15: ffff8801cc32ae98 [ 34.033176] FS: 0000000001e26940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 34.039337] kobject: 'queues' (000000004685621f): kobject_uevent_env: filter function caused the event to drop! [ 34.057007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.057016] CR2: 000000000046d850 CR3: 00000001d8cdf000 CR4: 00000000001406f0 [ 34.057027] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.057034] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.057039] Call Trace: [ 34.057062] vfs_get_tree+0x1cb/0x5c0 [ 34.057084] mq_create_mount+0xe3/0x190 [ 34.062921] kobject: 'rx-0' (00000000db25edc2): kobject_add_internal: parent: 'queues', set: 'queues' [ 34.068944] mq_init_ns+0x15a/0x210 [ 34.076900] kobject: 'rx-0' (00000000db25edc2): kobject_uevent_env [ 34.083828] copy_ipcs+0x3d2/0x580 [ 34.083841] ? ipcns_get+0xe0/0xe0 [ 34.083857] ? do_mount+0x1db0/0x1db0 [ 34.083869] ? kmem_cache_alloc+0x33a/0x730 [ 34.083886] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.083900] ? perf_event_namespaces+0x136/0x400 [ 34.083918] create_new_namespaces+0x376/0x900 [ 34.083936] ? sys_ni_syscall+0x20/0x20 [ 34.083952] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.083971] ? ns_capable_common+0x13f/0x170 [ 34.094911] IPVS: ftp: loaded support on port[0] = 21 [ 34.098545] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 34.108202] kobject: 'rx-0' (00000000db25edc2): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' [ 34.114049] ksys_unshare+0x79c/0x10b0 [ 34.114066] ? walk_process_tree+0x440/0x440 [ 34.114083] ? lock_downgrade+0x900/0x900 [ 34.114102] ? kasan_check_read+0x11/0x20 [ 34.128392] kobject: 'tx-0' (00000000adadaf79): kobject_add_internal: parent: 'queues', set: 'queues' [ 34.130246] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.138083] kobject: 'tx-0' (00000000adadaf79): kobject_uevent_env [ 34.145033] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.145051] ? kasan_check_write+0x14/0x20 [ 34.145064] ? do_raw_read_unlock+0x3f/0x60 [ 34.145078] ? do_syscall_64+0x9a/0x820 [ 34.145089] ? do_syscall_64+0x9a/0x820 [ 34.145104] ? lockdep_hardirqs_on+0x421/0x5c0 [ 34.145124] ? trace_hardirqs_on+0xbd/0x310 [ 34.154166] IPVS: ftp: loaded support on port[0] = 21 [ 34.154997] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.161708] kobject: 'tx-0' (00000000adadaf79): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' [ 34.162767] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 34.162784] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 34.162809] __x64_sys_unshare+0x31/0x40 [ 34.174009] kobject: 'lo' (0000000037dda8c8): kobject_add_internal: parent: 'net', set: 'devices' [ 34.175798] do_syscall_64+0x1b9/0x820 [ 34.183412] kobject: 'lo' (0000000037dda8c8): kobject_uevent_env [ 34.185658] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.189232] kobject: 'lo' (0000000037dda8c8): fill_kobj_path: path = '/devices/virtual/net/lo' [ 34.193017] ? syscall_return_slowpath+0x5e0/0x5e0 [ 34.193032] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.193048] ? trace_hardirqs_on_caller+0x310/0x310 [ 34.193067] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 34.198849] kobject: 'queues' (0000000079e716de): kobject_add_internal: parent: 'lo', set: '' [ 34.203016] ? prepare_exit_to_usermode+0x291/0x3b0 [ 34.203033] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.203051] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.203067] RIP: 0033:0x445117 [ 34.208857] kobject: 'queues' (0000000079e716de): kobject_uevent_env [ 34.212412] Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 3d de fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 1d de fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 34.212420] RSP: 002b:00007fff255a2848 EFLAGS: 00000217 ORIG_RAX: 0000000000000110 [ 34.212434] RAX: ffffffffffffffda RBX: 00007fff255a2940 RCX: 0000000000445117 [ 34.212442] RDX: 0000000000000000 RSI: 00007fff255a2850 RDI: 0000000008000000 [ 34.212449] RBP: 585858582e72656c R08: 0000000000000000 R09: 0000000000000018 [ 34.212457] R10: 0000000000000000 R11: 0000000000000217 R12: 6c616b7a79732f2e [ 34.212469] R13: 0000000000403450 R14: 0000000000000000 R15: 0000000000000000 [ 34.218038] kobject: 'queues' (0000000079e716de): kobject_uevent_env: filter function caused the event to drop! [ 34.222017] Modules linked in: [ 34.222196] ---[ end trace 8b3f7ae3271e7353 ]--- [ 34.226560] kobject: 'rx-0' (000000006e048365): kobject_add_internal: parent: 'queues', set: 'queues' [ 34.231759] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 34.237958] kobject: 'rx-0' (000000006e048365): kobject_uevent_env [ 34.246773] Code: 4c 8d b3 98 00 00 00 4d 85 ed 0f 84 d1 00 00 00 e8 6b 44 3f fe 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 01 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 34.246786] RSP: 0018:ffff8801bb79f928 EFLAGS: 00010206 [ 34.251277] kobject: 'rx-0' (000000006e048365): fill_kobj_path: path = '/devices/virtual/net/lo/queues/rx-0' [ 34.255121] RAX: dffffc0000000000 RBX: ffff8801cc32ae00 RCX: ffffffff8160aca1 [ 34.255130] RDX: 00000000001aa08d RSI: ffffffff833deb15 RDI: 0000000000d50468 [ 34.255144] RBP: ffff8801bb79f948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 34.260400] kobject: 'tx-0' (00000000cac8d8fc): kobject_add_internal: parent: 'queues', set: 'queues' [ 34.263463] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7ab12c0 [ 34.263477] R13: 0000000000d50460 R14: ffff8801cc32ae98 R15: ffff8801cc32ae98 [ 34.273472] kobject: 'tx-0' (00000000cac8d8fc): kobject_uevent_env [ 34.277274] FS: 0000000001e26940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 34.283983] kobject: 'tx-0' (00000000cac8d8fc): fill_kobj_path: path = '/devices/virtual/net/lo/queues/tx-0' [ 34.288234] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.293762] kobject: 'lo' (000000006d0494b1): kobject_add_internal: parent: 'net', set: 'devices' [ 34.296822] CR2: 000000000046d850 CR3: 00000001d8cdf000 CR4: 00000000001406f0 [ 34.301628] kobject: 'lo' (000000006d0494b1): kobject_uevent_env [ 34.304806] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.304820] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.310527] kobject: 'lo' (000000006d0494b1): fill_kobj_path: path = '/devices/virtual/net/lo' [ 34.313750] Kernel panic - not syncing: Fatal exception [ 34.315049] Kernel Offset: disabled [ 34.705872] Rebooting in 86400 seconds..