[....] Starting OpenBSD Secure Shell server: sshd[ 26.749788] 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: [ 30.242078] random: sshd: uninitialized urandom read (32 bytes read) [ 30.692013] random: sshd: uninitialized urandom read (32 bytes read) [ 31.273356] sshd (5578) used greatest stack depth: 16600 bytes left [ 31.296747] random: sshd: uninitialized urandom read (32 bytes read) [ 31.516807] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. [ 37.264576] random: sshd: uninitialized urandom read (32 bytes read) [ 37.412179] IPVS: ftp: loaded support on port[0] = 21 [ 37.412186] IPVS: ftp: loaded support on port[0] = 21 [ 37.424122] kasan: CONFIG_KASAN_INLINE enabled [ 37.425271] IPVS: ftp: loaded support on port[0] = 21 [ 37.429104] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.437114] IPVS: ftp: loaded support on port[0] = 21 [ 37.441413] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.448924] kobject: 'lo' (00000000e22a2880): kobject_add_internal: parent: 'net', set: 'devices' [ 37.452791] CPU: 0 PID: 5602 Comm: syz-executor469 Not tainted 4.19.0-rc3-next-20180912+ #72 [ 37.470109] kobject: 'lo' (00000000e22a2880): kobject_uevent_env [ 37.470357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.476620] kobject: 'lo' (00000000e22a2880): fill_kobj_path: path = '/devices/virtual/net/lo' [ 37.485850] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 37.485867] 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 [ 37.485880] RSP: 0018:ffff8801c6f67928 EFLAGS: 00010207 [ 37.494741] kobject: 'queues' (000000009f7fdf75): kobject_add_internal: parent: 'lo', set: '<NULL>' [ 37.518559] kobject: 'queues' (000000009f7fdf75): kobject_uevent_env [ 37.523716] RAX: dffffc0000000000 RBX: ffff8801cc801c00 RCX: ffffffff8160aca1 [ 37.546632] RDX: 000000000bd055c5 RSI: ffffffff833deb15 RDI: 000000005e82ae2d [ 37.553900] RBP: ffff8801c6f67948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 37.561174] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7a6d140 [ 37.568441] R13: 000000005e82ae25 R14: ffff8801cc801c98 R15: ffff8801cc801c98 [ 37.575716] FS: 00000000011a7880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 37.583943] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.589827] CR2: 00000000004730d0 CR3: 00000001d952b000 CR4: 00000000001406f0 [ 37.597090] Call Trace: [ 37.599669] vfs_get_tree+0x1cb/0x5c0 [ 37.603466] mq_create_mount+0xe3/0x190 [ 37.607428] mq_init_ns+0x15a/0x210 [ 37.611037] copy_ipcs+0x3d2/0x580 [ 37.614560] ? ipcns_get+0xe0/0xe0 [ 37.618105] ? do_mount+0x1db0/0x1db0 [ 37.621898] ? kmem_cache_alloc+0x33a/0x730 [ 37.626205] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.631743] ? perf_event_namespaces+0x136/0x400 [ 37.636509] create_new_namespaces+0x376/0x900 [ 37.641098] ? sys_ni_syscall+0x20/0x20 [ 37.645080] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.650655] ? ns_capable_common+0x13f/0x170 [ 37.655081] unshare_nsproxy_namespaces+0xc3/0x1f0 [ 37.660023] ksys_unshare+0x79c/0x10b0 [ 37.663922] ? walk_process_tree+0x440/0x440 [ 37.668337] ? lock_downgrade+0x900/0x900 [ 37.672488] ? kasan_check_read+0x11/0x20 [ 37.676642] ? do_raw_spin_unlock+0xa7/0x2f0 [ 37.681062] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 37.685649] ? kasan_check_write+0x14/0x20 [ 37.689895] ? do_raw_read_unlock+0x3f/0x60 [ 37.694222] ? do_syscall_64+0x9a/0x820 [ 37.698197] ? do_syscall_64+0x9a/0x820 [ 37.702178] ? lockdep_hardirqs_on+0x421/0x5c0 [ 37.706769] ? trace_hardirqs_on+0xbd/0x310 [ 37.711094] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.716465] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 37.721920] ? __ia32_sys_prlimit64+0x8c0/0x8c0 [ 37.726599] __x64_sys_unshare+0x31/0x40 [ 37.730682] do_syscall_64+0x1b9/0x820 [ 37.734572] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.739944] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.744876] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.749729] ? trace_hardirqs_on_caller+0x310/0x310 [ 37.754759] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.759786] ? prepare_exit_to_usermode+0x291/0x3b0 [ 37.764817] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.769700] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.774897] RIP: 0033:0x44a127 [ 37.778097] Code: 00 00 00 b8 63 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 6d d5 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 4d d5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 37.797001] RSP: 002b:00007fff6bb85208 EFLAGS: 00000217 ORIG_RAX: 0000000000000110 [ 37.804717] RAX: ffffffffffffffda RBX: 00007fff6bb85290 RCX: 000000000044a127 [ 37.811990] RDX: 0000000000000000 RSI: 00007fff6bb85220 RDI: 0000000008000000 [ 37.819262] RBP: 585858582e72656c R08: 0000000000000000 R09: 00000000011a7880 [ 37.826533] R10: 0000000000000000 R11: 0000000000000217 R12: 6c616b7a79732f2e [ 37.833803] R13: 0000000000407b90 R14: 0000000000000000 R15: 0000000000000000 [ 37.841079] Modules linked in: [ 37.844360] ---[ end trace 5e81385f417ab453 ]--- [ 37.849137] RIP: 0010:mqueue_get_tree+0xba/0x2e0 [ 37.853899] 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 [ 37.872843] RSP: 0018:ffff8801c6f67928 EFLAGS: 00010207 [ 37.878240] RAX: dffffc0000000000 RBX: ffff8801cc801c00 RCX: ffffffff8160aca1 [ 37.885535] RDX: 000000000bd055c5 RSI: ffffffff833deb15 RDI: 000000005e82ae2d [ 37.892810] RBP: ffff8801c6f67948 R08: fffffbfff13555fd R09: fffffbfff13555fc [ 37.900130] R10: fffffbfff13555fc R11: ffffffff89aaafe3 R12: ffff8801d7a6d140 [ 37.907430] R13: 000000005e82ae25 R14: ffff8801cc801c98 R15: ffff8801cc801c98 [ 37.914743] FS: 00000000011a7880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 37.922987] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.928900] CR2: 00000000004730d0 CR3: 00000001d952b000 CR4: 00000000001406f0 [ 37.936197] Kernel panic - not syncing: Fatal exception [ 37.942498] Kernel Offset: disabled [ 37.946128] Rebooting in 86400 seconds..