[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 27.189512] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.269444] random: sshd: uninitialized urandom read (32 bytes read) [ 30.650887] random: sshd: uninitialized urandom read (32 bytes read) [ 31.244228] random: sshd: uninitialized urandom read (32 bytes read) [ 34.336628] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. [ 39.989718] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/12 23:49:23 parsed 1 programs [ 41.156082] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/12 23:49:25 executed programs: 0 [ 42.526864] IPVS: ftp: loaded support on port[0] = 21 [ 42.526870] IPVS: ftp: loaded support on port[0] = 21 [ 42.536469] kasan: CONFIG_KASAN_INLINE enabled [ 42.542211] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.549597] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.555837] CPU: 0 PID: 5588 Comm: syz-executor3 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 42.564236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.573603] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 42.578359] 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 [ 42.597264] RSP: 0018:ffff8801bacf7928 EFLAGS: 00010207 [ 42.602647] RAX: dffffc0000000000 RBX: ffff8801ccb8e540 RCX: ffffffff8160aca1 [ 42.610187] RDX: 0000000000000078 RSI: ffffffff833deb15 RDI: 00000000000003c6 [ 42.617461] RBP: ffff8801bacf7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 42.624729] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7abe100 [ 42.631999] R13: 00000000000003be R14: ffff8801ccb8e5d8 R15: ffff8801ccb8e5d8 [ 42.639273] FS: 000000000190d940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 42.647680] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.653558] CR2: 0000000000482e00 CR3: 00000001bae40000 CR4: 00000000001406f0 [ 42.660827] Call Trace: [ 42.663421] vfs_get_tree+0x1cb/0x5c0 [ 42.667240] mq_create_mount+0xe3/0x190 [ 42.671229] mq_init_ns+0x15a/0x210 [ 42.674856] copy_ipcs+0x3d2/0x580 [ 42.678395] ? ipcns_get+0xe0/0xe0 [ 42.681938] ? do_mount+0x1db0/0x1db0 [ 42.685736] ? kmem_cache_alloc+0x33a/0x730 [ 42.690063] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.695600] ? perf_event_namespaces+0x136/0x400 [ 42.700359] create_new_namespaces+0x376/0x900 [ 42.704943] ? sys_ni_syscall+0x20/0x20 [ 42.708918] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.714449] ? ns_capable_common+0x13f/0x170 [ 42.718859] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 42.723799] ksys_unshare+0x79c/0x10b0 [ 42.727697] ? walk_process_tree+0x440/0x440 [ 42.732111] ? lock_downgrade+0x900/0x900 [ 42.736263] ? kasan_check_read+0x11/0x20 [ 42.740412] ? do_raw_spin_unlock+0xa7/0x2f0 [ 42.744819] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 42.749412] ? kasan_check_write+0x14/0x20 [ 42.753647] ? do_raw_read_unlock+0x3f/0x60 [ 42.757968] ? do_syscall_64+0x9a/0x820 [ 42.761945] ? do_syscall_64+0x9a/0x820 [ 42.765923] ? lockdep_hardirqs_on+0x421/0x5c0 [ 42.770510] ? trace_hardirqs_on+0xbd/0x310 [ 42.774843] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.780209] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 42.785659] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 42.790341] __x64_sys_unshare+0x31/0x40 [ 42.794411] do_syscall_64+0x1b9/0x820 [ 42.798303] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.803669] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.808611] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.813462] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.818576] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.823613] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.828638] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.833488] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.838673] RIP: 0033:0x459d87 [ 42.841879] 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 [ 42.860779] RSP: 002b:00007ffd56731ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 42.868492] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459d87 [ 42.875760] RDX: 0000000000000000 RSI: 00007ffd56731eb0 RDI: 0000000008000000 [ 42.883028] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000018 [ 42.890291] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000412c30 [ 42.897555] R13: 0000000000412cc0 R14: 0000000000000000 R15: 0000000000000000 [ 42.904826] Modules linked in: [ 42.908169] ---[ end trace a4316615658b13f5 ]--- [ 42.912985] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 42.917747] 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 [ 42.936689] RSP: 0018:ffff8801bacf7928 EFLAGS: 00010207 [ 42.942085] RAX: dffffc0000000000 RBX: ffff8801ccb8e540 RCX: ffffffff8160aca1 [ 42.949359] RDX: 0000000000000078 RSI: ffffffff833deb15 RDI: 00000000000003c6 [ 42.956658] RBP: ffff8801bacf7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 42.963961] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7abe100 [ 42.971297] R13: 00000000000003be R14: ffff8801ccb8e5d8 R15: ffff8801ccb8e5d8 [ 42.978572] FS: 000000000190d940(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 42.986828] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.992739] CR2: 0000000000482e00 CR3: 00000001bae40000 CR4: 00000000001406f0 [ 43.000037] Kernel panic - not syncing: Fatal exception [ 43.006362] Kernel Offset: disabled [ 43.010000] Rebooting in 86400 seconds..