[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 27.397402] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.412931] random: sshd: uninitialized urandom read (32 bytes read) [ 32.813116] random: sshd: uninitialized urandom read (32 bytes read) [ 33.396076] random: sshd: uninitialized urandom read (32 bytes read) [ 33.611803] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. [ 39.361701] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/12 19:52:05 parsed 1 programs [ 40.864315] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/12 19:52:09 executed programs: 0 [ 43.289849] kasan: CONFIG_KASAN_INLINE enabled [ 43.294783] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.302228] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.308476] CPU: 1 PID: 5605 Comm: syz-executor3 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 43.316894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.326276] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 43.331041] Code: 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 6d 08 49 8d 7d 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b6 01 00 00 4d 8b 6d 68 4d 85 ed 74 11 e8 1b 44 [ 43.349961] RSP: 0018:ffff8801d860f928 EFLAGS: 00010a02 [ 43.355331] RAX: dffffc0000000000 RBX: ffff8801cc8943c0 RCX: ffffffff8160aca1 [ 43.362606] RDX: 1bd5a9d5a000000d RSI: ffffffff833deb15 RDI: dead4ead00000068 [ 43.369889] RBP: ffff8801d860f948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 43.377168] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d74f1ac0 [ 43.384449] R13: dead4ead00000000 R14: ffff8801cc894458 R15: ffff8801cc894458 [ 43.391743] FS: 0000000002437940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 43.399973] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.405854] CR2: 00007fff30638179 CR3: 00000001d8474000 CR4: 00000000001406e0 [ 43.413143] Call Trace: [ 43.415740] vfs_get_tree+0x1cb/0x5c0 [ 43.419555] mq_create_mount+0xe3/0x190 [ 43.423543] mq_init_ns+0x15a/0x210 [ 43.427175] copy_ipcs+0x3d2/0x580 [ 43.430717] ? ipcns_get+0xe0/0xe0 [ 43.434268] ? do_mount+0x1db0/0x1db0 [ 43.438070] ? kmem_cache_alloc+0x33a/0x730 [ 43.442407] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.447968] ? perf_event_namespaces+0x136/0x400 [ 43.452734] create_new_namespaces+0x376/0x900 [ 43.457330] ? sys_ni_syscall+0x20/0x20 [ 43.461309] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.466846] ? ns_capable_common+0x13f/0x170 [ 43.471265] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 43.476202] ksys_unshare+0x79c/0x10b0 [ 43.480091] ? walk_process_tree+0x440/0x440 [ 43.484502] ? lock_downgrade+0x900/0x900 [ 43.488652] ? kasan_check_read+0x11/0x20 [ 43.492800] ? do_raw_spin_unlock+0xa7/0x2f0 [ 43.497210] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 43.501801] ? kasan_check_write+0x14/0x20 [ 43.506036] ? do_raw_read_unlock+0x3f/0x60 [ 43.510358] ? do_syscall_64+0x9a/0x820 [ 43.514330] ? do_syscall_64+0x9a/0x820 [ 43.518307] ? lockdep_hardirqs_on+0x421/0x5c0 [ 43.522908] ? trace_hardirqs_on+0xbd/0x310 [ 43.527234] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.532623] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 43.538081] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 43.542854] __x64_sys_unshare+0x31/0x40 [ 43.546929] do_syscall_64+0x1b9/0x820 [ 43.550822] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 43.556192] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.561121] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.565972] ? trace_hardirqs_on_caller+0x310/0x310 [ 43.570989] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 43.576034] ? prepare_exit_to_usermode+0x291/0x3b0 [ 43.581057] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.585920] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.591111] RIP: 0033:0x459d87 [ 43.594312] Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 3d 8a 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 8a fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 43.613221] RSP: 002b:00007ffd50dcd338 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 43.620939] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459d87 [ 43.628209] RDX: 0000000000000000 RSI: 00007ffd50dcd340 RDI: 0000000008000000 [ 43.635577] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000018 [ 43.642841] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000412c30 [ 43.650119] R13: 0000000000412cc0 R14: 0000000000000000 R15: 0000000000000000 [ 43.657395] Modules linked in: [ 43.660751] ---[ end trace 1adbfa836bec01e8 ]--- [ 43.665546] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 43.670308] Code: 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 6d 08 49 8d 7d 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b6 01 00 00 4d 8b 6d 68 4d 85 ed 74 11 e8 1b 44 [ 43.689271] RSP: 0018:ffff8801d860f928 EFLAGS: 00010a02 [ 43.694676] RAX: dffffc0000000000 RBX: ffff8801cc8943c0 RCX: ffffffff8160aca1 [ 43.701967] RDX: 1bd5a9d5a000000d RSI: ffffffff833deb15 RDI: dead4ead00000068 [ 43.709288] RBP: ffff8801d860f948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 43.716602] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d74f1ac0 [ 43.723973] R13: dead4ead00000000 R14: ffff8801cc894458 R15: ffff8801cc894458 [ 43.731265] FS: 0000000002437940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 43.739540] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.745462] CR2: 00007fff30638179 CR3: 00000001d8474000 CR4: 00000000001406e0 [ 43.752766] Kernel panic - not syncing: Fatal exception [ 43.759098] Kernel Offset: disabled [ 43.762726] Rebooting in 86400 seconds..