[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 25.901377] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.893520] random: sshd: uninitialized urandom read (32 bytes read) [ 31.252265] random: sshd: uninitialized urandom read (32 bytes read) [ 31.865287] random: sshd: uninitialized urandom read (32 bytes read) [ 32.086504] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.219' (ECDSA) to the list of known hosts. [ 37.780068] random: sshd: uninitialized urandom read (32 bytes read) 2018/09/12 12:57:47 parsed 1 programs [ 38.809858] random: cc1: uninitialized urandom read (8 bytes read) 2018/09/12 12:57:48 executed programs: 0 [ 39.949020] IPVS: ftp: loaded support on port[0] = 21 [ 39.974129] IPVS: ftp: loaded support on port[0] = 21 [ 39.987603] IPVS: ftp: loaded support on port[0] = 21 [ 39.993972] kasan: CONFIG_KASAN_INLINE enabled [ 39.998696] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.998714] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.012295] CPU: 1 PID: 5602 Comm: syz-executor2 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 40.020689] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.030051] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 40.034817] 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 [ 40.053733] RSP: 0018:ffff8801bc9e7928 EFLAGS: 00010202 [ 40.059097] RAX: dffffc0000000000 RBX: ffff8801cba60540 RCX: ffffffff8160aca1 [ 40.066371] RDX: 07b06904cea0000d RSI: ffffffff833deb15 RDI: 3d8348267500006a [ 40.073661] RBP: ffff8801bc9e7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 40.080940] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7ab8b00 [ 40.088208] R13: 3d83482675000002 R14: ffff8801cba605d8 R15: ffff8801cba605d8 [ 40.095494] FS: 000000000144f940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 40.103748] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.109651] CR2: 0000000000482e00 CR3: 00000001d826d000 CR4: 00000000001406e0 [ 40.116913] Call Trace: [ 40.119486] vfs_get_tree+0x1cb/0x5c0 [ 40.123276] mq_create_mount+0xe3/0x190 [ 40.127260] mq_init_ns+0x15a/0x210 [ 40.130901] copy_ipcs+0x3d2/0x580 [ 40.134482] ? ipcns_get+0xe0/0xe0 [ 40.138017] ? do_mount+0x1db0/0x1db0 [ 40.141813] ? kmem_cache_alloc+0x33a/0x730 [ 40.146146] create_new_namespaces+0x376/0x900 [ 40.151003] ? sys_ni_syscall+0x20/0x20 [ 40.154961] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.160487] ? ns_capable_common+0x13f/0x170 [ 40.164933] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 40.169883] ksys_unshare+0x79c/0x10b0 [ 40.173771] ? walk_process_tree+0x440/0x440 [ 40.178182] ? lock_downgrade+0x900/0x900 [ 40.182431] ? kasan_check_read+0x11/0x20 [ 40.186571] ? do_raw_spin_unlock+0xa7/0x2f0 [ 40.190982] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 40.195577] ? kasan_check_write+0x14/0x20 [ 40.199812] ? do_raw_read_unlock+0x3f/0x60 [ 40.204146] ? do_syscall_64+0x9a/0x820 [ 40.208132] ? do_syscall_64+0x9a/0x820 [ 40.212119] ? lockdep_hardirqs_on+0x421/0x5c0 [ 40.216715] ? trace_hardirqs_on+0xbd/0x310 [ 40.221049] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.226445] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 40.231898] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 40.236574] __x64_sys_unshare+0x31/0x40 [ 40.240639] do_syscall_64+0x1b9/0x820 [ 40.244533] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.249902] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.254841] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.259690] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.264710] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.269731] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.274748] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.279597] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.284787] RIP: 0033:0x459d87 [ 40.287981] 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 [ 40.306877] RSP: 002b:00007fff3abbb498 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 [ 40.314594] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459d87 [ 40.321860] RDX: 0000000000000000 RSI: 00007fff3abbb4a0 RDI: 0000000008000000 [ 40.329125] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000018 [ 40.336402] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000412c30 [ 40.343672] R13: 0000000000412cc0 R14: 0000000000000000 R15: 0000000000000000 [ 40.350945] Modules linked in: [ 40.354266] ---[ end trace 688bc69a85b11cd6 ]--- [ 40.359077] RIP: 0010:mqueue_get_tree+0xdd/0x2e0 [ 40.363846] 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 [ 40.382784] RSP: 0018:ffff8801bc9e7928 EFLAGS: 00010202 [ 40.388175] RAX: dffffc0000000000 RBX: ffff8801cba60540 RCX: ffffffff8160aca1 [ 40.395449] RDX: 07b06904cea0000d RSI: ffffffff833deb15 RDI: 3d8348267500006a [ 40.402745] RBP: ffff8801bc9e7948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 40.410041] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7ab8b00 [ 40.417336] R13: 3d83482675000002 R14: ffff8801cba605d8 R15: ffff8801cba605d8 [ 40.424608] FS: 000000000144f940(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 [ 40.432863] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.438768] CR2: 0000000000482e00 CR3: 00000001d826d000 CR4: 00000000001406e0 [ 40.446059] Kernel panic - not syncing: Fatal exception [ 40.452272] Kernel Offset: disabled [ 40.455903] Rebooting in 86400 seconds..