[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 24.755690] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.581922] random: sshd: uninitialized urandom read (32 bytes read) [ 27.129238] random: sshd: uninitialized urandom read (32 bytes read) [ 27.729932] random: sshd: uninitialized urandom read (32 bytes read) [ 27.950352] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. [ 33.756152] random: sshd: uninitialized urandom read (32 bytes read) [ 33.889988] kasan: CONFIG_KASAN_INLINE enabled [ 33.894756] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.902170] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.908629] CPU: 0 PID: 5550 Comm: syz-executor249 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 33.917190] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.926548] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 33.931291] 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 [ 33.950176] RSP: 0018:ffff8801b707f928 EFLAGS: 00010206 [ 33.955523] RAX: dffffc0000000000 RBX: ffff8801cd7eab40 RCX: ffffffff8160aca1 [ 33.962775] RDX: 093a56c1f85241e2 RSI: ffffffff833deb15 RDI: 49d2b60fc2920f12 [ 33.970033] RBP: ffff8801b707f948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 33.977286] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7adab00 [ 33.984549] R13: 49d2b60fc2920f0a R14: ffff8801cd7eabd8 R15: ffff8801cd7eabd8 [ 33.991824] FS: 00000000013eb940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 34.000032] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.005926] CR2: 000000000046cb90 CR3: 00000001ce0cd000 CR4: 00000000001406f0 [ 34.013209] Call Trace: [ 34.015794] vfs_get_tree+0x1cb/0x5c0 [ 34.019585] mq_create_mount+0xe3/0x190 [ 34.023544] mq_init_ns+0x15a/0x210 [ 34.027156] copy_ipcs+0x3d2/0x580 [ 34.030679] ? ipcns_get+0xe0/0xe0 [ 34.034204] ? do_mount+0x1db0/0x1db0 [ 34.037988] ? kmem_cache_alloc+0x33a/0x730 [ 34.042295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.047815] ? perf_event_namespaces+0x136/0x400 [ 34.052555] create_new_namespaces+0x376/0x900 [ 34.057138] ? sys_ni_syscall+0x20/0x20 [ 34.061101] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 34.066627] ? ns_capable_common+0x13f/0x170 [ 34.071025] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 34.075956] ksys_unshare+0x79c/0x10b0 [ 34.079834] ? walk_process_tree+0x440/0x440 [ 34.084231] ? lock_downgrade+0x900/0x900 [ 34.088407] ? kasan_check_read+0x11/0x20 [ 34.092543] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.096938] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.101507] ? kasan_check_write+0x14/0x20 [ 34.105745] ? do_raw_read_unlock+0x3f/0x60 [ 34.110053] ? do_syscall_64+0x9a/0x820 [ 34.114013] ? do_syscall_64+0x9a/0x820 [ 34.117989] ? lockdep_hardirqs_on+0x421/0x5c0 [ 34.122563] ? trace_hardirqs_on+0xbd/0x310 [ 34.126889] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.132255] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 34.137696] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 34.142355] __x64_sys_unshare+0x31/0x40 [ 34.146421] do_syscall_64+0x1b9/0x820 [ 34.150298] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.155646] ? syscall_return_slowpath+0x5e0/0x5e0 [ 34.160558] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.165392] ? trace_hardirqs_on_caller+0x310/0x310 [ 34.170393] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 34.175402] ? prepare_exit_to_usermode+0x291/0x3b0 [ 34.180427] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.185268] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.190445] RIP: 0033:0x444027 [ 34.193625] Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ed 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 cd de fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 34.212515] RSP: 002b:00007ffca8ca0dc8 EFLAGS: 00000217 ORIG_RAX: 0000000000000110 [ 34.220211] RAX: ffffffffffffffda RBX: 00007ffca8ca0e80 RCX: 0000000000444027 [ 34.227467] RDX: 0000000000000000 RSI: 00007ffca8ca0dd0 RDI: 0000000008000000 [ 34.234727] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000013eb940 [ 34.241979] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000402380 [ 34.249233] R13: 0000000000402410 R14: 0000000000000000 R15: 0000000000000000 [ 34.256493] Modules linked in: [ 34.259897] ---[ end trace 90f3b48ddeecf13b ]--- [ 34.264427] kobject: 'regulatory.0' (00000000a4feba27): kobject_uevent_env [ 34.264716] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 34.271713] kobject: 'regulatory.0' (00000000a4feba27): fill_kobj_path: path = '/devices/platform/regulatory.0' [ 34.276489] 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 [ 34.276502] RSP: 0018:ffff8801b707f928 EFLAGS: 00010206 [ 34.311032] RAX: dffffc0000000000 RBX: ffff8801cd7eab40 RCX: ffffffff8160aca1 [ 34.318338] RDX: 093a56c1f85241e2 RSI: ffffffff833deb15 RDI: 49d2b60fc2920f12 [ 34.325638] RBP: ffff8801b707f948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 34.332963] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7adab00 [ 34.340266] R13: 49d2b60fc2920f0a R14: ffff8801cd7eabd8 R15: ffff8801cd7eabd8 [ 34.347599] FS: 00000000013eb940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 34.355847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.361732] CR2: 000000000046cb90 CR3: 00000001ce0cd000 CR4: 00000000001406f0 [ 34.369027] Kernel panic - not syncing: Fatal exception [ 34.375299] Kernel Offset: disabled [ 34.378921] Rebooting in 86400 seconds..