[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 26.579547] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.142220] random: sshd: uninitialized urandom read (32 bytes read) [ 30.543571] random: sshd: uninitialized urandom read (32 bytes read) [ 31.181001] random: sshd: uninitialized urandom read (32 bytes read) [ 31.401684] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts. [ 36.919023] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/12 11:54:48 parsed 1 programs [ 38.193027] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/12 11:54:49 executed programs: 0 [ 39.318793] kasan: CONFIG_KASAN_INLINE enabled [ 39.323686] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.331056] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.337284] CPU: 1 PID: 5603 Comm: syz-executor0 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 39.345678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.355041] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 39.359799] 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 [ 39.378715] RSP: 0018:ffff8801bb1f7928 EFLAGS: 00010202 [ 39.384072] RAX: dffffc0000000000 RBX: ffff8801cc928800 RCX: ffffffff8160aca1 [ 39.391336] RDX: 09913fffff68dd32 RSI: ffffffff833deb15 RDI: 4c89fffffb46e990 [ 39.398599] RBP: ffff8801bb1f7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 39.405861] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7a6d400 [ 39.413126] R13: 4c89fffffb46e928 R14: ffff8801cc928898 R15: ffff8801cc928898 [ 39.420390] FS: 000000000219f940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 39.428607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.434477] CR2: 0000000000482e00 CR3: 00000001bb976000 CR4: 00000000001406e0 [ 39.441734] Call Trace: [ 39.444317] vfs_get_tree+0x1cb/0x5c0 [ 39.448106] mq_create_mount+0xe3/0x190 [ 39.452073] mq_init_ns+0x15a/0x210 [ 39.455692] copy_ipcs+0x3d2/0x580 [ 39.459223] ? ipcns_get+0xe0/0xe0 [ 39.462748] ? do_mount+0x1db0/0x1db0 [ 39.466531] ? kmem_cache_alloc+0x33a/0x730 [ 39.470839] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.476359] ? perf_event_namespaces+0x136/0x400 [ 39.481098] create_new_namespaces+0x376/0x900 [ 39.485673] ? sys_ni_syscall+0x20/0x20 [ 39.489635] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.495169] ? ns_capable_common+0x13f/0x170 [ 39.499560] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 39.504475] ksys_unshare+0x79c/0x10b0 [ 39.508346] ? walk_process_tree+0x440/0x440 [ 39.512740] ? lock_downgrade+0x900/0x900 [ 39.516874] ? kasan_check_read+0x11/0x20 [ 39.521003] ? do_raw_spin_unlock+0xa7/0x2f0 [ 39.525395] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 39.529961] ? kasan_check_write+0x14/0x20 [ 39.534179] ? do_raw_read_unlock+0x3f/0x60 [ 39.538502] ? do_syscall_64+0x9a/0x820 [ 39.542475] ? do_syscall_64+0x9a/0x820 [ 39.546444] ? lockdep_hardirqs_on+0x421/0x5c0 [ 39.551009] ? trace_hardirqs_on+0xbd/0x310 [ 39.555317] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.560669] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 39.566105] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 39.570758] __x64_sys_unshare+0x31/0x40 [ 39.574807] do_syscall_64+0x1b9/0x820 [ 39.578679] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.584028] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.588942] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.593773] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.598772] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.603774] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.608775] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.613614] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.618786] RIP: 0033:0x459d87 [ 39.621964] 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 [ 39.641186] RSP: 002b:00007ffecd312988 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 39.648882] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459d87 [ 39.656137] RDX: 0000000000000000 RSI: 00007ffecd312990 RDI: 0000000008000000 [ 39.663390] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000018 [ 39.670657] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000412c30 [ 39.677920] R13: 0000000000412cc0 R14: 0000000000000000 R15: 0000000000000000 [ 39.685312] Modules linked in: [ 39.688616] ---[ end trace 1629e51de1b81d3e ]--- [ 39.693429] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 39.698181] 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 [ 39.717108] RSP: 0018:ffff8801bb1f7928 EFLAGS: 00010202 [ 39.722492] RAX: dffffc0000000000 RBX: ffff8801cc928800 RCX: ffffffff8160aca1 [ 39.729749] RDX: 09913fffff68dd32 RSI: ffffffff833deb15 RDI: 4c89fffffb46e990 [ 39.737035] RBP: ffff8801bb1f7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 39.744323] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7a6d400 [ 39.751582] R13: 4c89fffffb46e928 R14: ffff8801cc928898 R15: ffff8801cc928898 [ 39.758872] FS: 000000000219f940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 39.767115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.773015] CR2: 0000000000482e00 CR3: 00000001bb976000 CR4: 00000000001406e0 [ 39.780289] Kernel panic - not syncing: Fatal exception [ 39.786626] Kernel Offset: disabled [ 39.790261] Rebooting in 86400 seconds..