[....] Starting OpenBSD Secure Shell server: sshd[ 26.198482] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 29.807395] random: sshd: uninitialized urandom read (32 bytes read) [ 30.222700] random: sshd: uninitialized urandom read (32 bytes read) [ 30.803909] sshd (5556) used greatest stack depth: 16872 bytes left [ 30.826790] random: sshd: uninitialized urandom read (32 bytes read) [ 31.045096] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts. [ 36.578272] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/12 21:52:34 parsed 1 programs [ 38.011526] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/12 21:52:36 executed programs: 0 [ 39.456113] IPVS: ftp: loaded support on port[0] = 21 [ 39.465091] IPVS: ftp: loaded support on port[0] = 21 [ 39.475564] kasan: CONFIG_KASAN_INLINE enabled [ 39.477780] IPVS: ftp: loaded support on port[0] = 21 [ 39.480439] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.492924] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.499171] CPU: 1 PID: 5591 Comm: syz-executor0 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 39.507564] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.516935] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 39.521691] 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 [ 39.540598] RSP: 0018:ffff8801d86ff928 EFLAGS: 00010206 [ 39.545961] RAX: dffffc0000000000 RBX: ffff8801cc2fd040 RCX: ffffffff8160aca1 [ 39.553227] RDX: 00000017491f7136 RSI: ffffffff833deb15 RDI: 000000ba48fb89b1 [ 39.560494] RBP: ffff8801d86ff948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 39.567761] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7aa8840 [ 39.575026] R13: 000000ba48fb8949 R14: ffff8801cc2fd0d8 R15: ffff8801cc2fd0d8 [ 39.582294] FS: 0000000001509940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 39.590513] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.596388] CR2: 00007ffeb0b97f88 CR3: 00000001d8553000 CR4: 00000000001406e0 [ 39.603659] Call Trace: [ 39.606255] vfs_get_tree+0x1cb/0x5c0 [ 39.610093] mq_create_mount+0xe3/0x190 [ 39.614095] mq_init_ns+0x15a/0x210 [ 39.617721] copy_ipcs+0x3d2/0x580 [ 39.621259] ? ipcns_get+0xe0/0xe0 [ 39.624799] ? do_mount+0x1db0/0x1db0 [ 39.628594] ? kmem_cache_alloc+0x33a/0x730 [ 39.632925] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.638462] ? perf_event_namespaces+0x136/0x400 [ 39.643217] create_new_namespaces+0x376/0x900 [ 39.647803] ? sys_ni_syscall+0x20/0x20 [ 39.651780] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.657314] ? ns_capable_common+0x13f/0x170 [ 39.661722] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 39.666682] ksys_unshare+0x79c/0x10b0 [ 39.670583] ? walk_process_tree+0x440/0x440 [ 39.674991] ? lock_downgrade+0x900/0x900 [ 39.679139] ? kasan_check_read+0x11/0x20 [ 39.683284] ? do_raw_spin_unlock+0xa7/0x2f0 [ 39.687692] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 39.692276] ? kasan_check_write+0x14/0x20 [ 39.696511] ? do_raw_read_unlock+0x3f/0x60 [ 39.700831] ? do_syscall_64+0x9a/0x820 [ 39.704803] ? do_syscall_64+0x9a/0x820 [ 39.708780] ? lockdep_hardirqs_on+0x421/0x5c0 [ 39.713365] ? trace_hardirqs_on+0xbd/0x310 [ 39.717690] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.723057] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 39.728508] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 39.733178] __x64_sys_unshare+0x31/0x40 [ 39.737253] do_syscall_64+0x1b9/0x820 [ 39.741145] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.746510] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.751440] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.756281] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.761297] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.766315] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.771338] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.776183] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.781369] RIP: 0033:0x459d87 [ 39.784559] 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 [ 39.803460] RSP: 002b:00007ffd124ed8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 39.811170] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459d87 [ 39.818434] RDX: 0000000000000000 RSI: 00007ffd124ed900 RDI: 0000000008000000 [ 39.825703] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000018 [ 39.832966] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000412c30 [ 39.840233] R13: 0000000000412cc0 R14: 0000000000000000 R15: 0000000000000000 [ 39.847507] Modules linked in: [ 39.850825] ---[ end trace c85203325448d8ea ]--- [ 39.855596] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 39.860377] 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 [ 39.879305] RSP: 0018:ffff8801d86ff928 EFLAGS: 00010206 [ 39.884669] RAX: dffffc0000000000 RBX: ffff8801cc2fd040 RCX: ffffffff8160aca1 [ 39.891961] RDX: 00000017491f7136 RSI: ffffffff833deb15 RDI: 000000ba48fb89b1 [ 39.899257] RBP: ffff8801d86ff948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 39.906523] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7aa8840 [ 39.913812] R13: 000000ba48fb8949 R14: ffff8801cc2fd0d8 R15: ffff8801cc2fd0d8 [ 39.921167] FS: 0000000001509940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 39.929443] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.935318] CR2: 00007ffeb0b97f88 CR3: 00000001d8553000 CR4: 00000000001406e0 [ 39.942627] Kernel panic - not syncing: Fatal exception [ 39.948934] Kernel Offset: disabled [ 39.952576] Rebooting in 86400 seconds..