[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.536170] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c[ 15.606994] random: sshd: uninitialized urandom read (32 bytes read) . [ 15.873910] random: sshd: uninitialized urandom read (32 bytes read) [ 16.579294] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 31.051366] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts. [ 36.754211] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.613452] list_del corruption, ffff8801a3ef91e8->next is LIST_POISON1 (dead000000000100) [ 43.622132] ------------[ cut here ]------------ [ 43.626869] kernel BUG at lib/list_debug.c:47! [ 43.631470] invalid opcode: 0000 [#1] SMP KASAN [ 43.636126] CPU: 1 PID: 7658 Comm: syz-executor814 Not tainted 4.18.0-rc4-next-20180713+ #7 [ 43.644602] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.653947] RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.659815] Code: ff fd 0f 0b 4c 89 e2 48 89 de 48 c7 c7 20 8e 1a 88 e8 9a 14 ff fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 c0 8d 1a 88 e8 86 14 ff fd <0f> 0b 48 89 de 48 c7 c7 e0 8e 1a 88 e8 75 14 ff fd 0f 0b 48 89 de [ 43.678933] RSP: 0018:ffff8801ca89f270 EFLAGS: 00010286 [ 43.684280] RAX: 000000000000004e RBX: ffff8801a3ef91e8 RCX: 0000000000000000 [ 43.691539] RDX: 0000000000000000 RSI: ffffffff81634151 RDI: 0000000000000001 [ 43.698797] RBP: ffff8801ca89f288 R08: ffff8801cb39e140 R09: ffffed003b5e4fc0 [ 43.706046] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: dead000000000200 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.713304] R13: dead000000000100 R14: ffff8801a3ef91e8 R15: ffff8801a3ef91f0 [ 43.720553] FS: 00007f73ca3f3700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 43.728767] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.734630] CR2: 000000000046a540 CR3: 00000001cac17000 CR4: 00000000001406e0 [ 43.741881] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.749130] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.756377] Call Trace: [ 43.758959] p9_fd_cancel+0x104/0x360 executing program executing program executing program executing program executing program [ 43.762737] ? p9_fd_close+0x5b0/0x5b0 [ 43.766602] ? p9_pollwait+0x83/0x230 [ 43.770382] p9_client_rpc+0xf1f/0x1400 [ 43.774336] ? p9_client_prepare_req.part.9+0xcd0/0xcd0 [ 43.779691] ? ksys_dup3+0x690/0x690 [ 43.783389] ? check_same_owner+0x340/0x340 [ 43.787692] ? p9_fd_poll+0x2b0/0x2b0 [ 43.791472] ? finish_wait+0x430/0x430 [ 43.795342] ? kasan_unpoison_shadow+0x35/0x50 [ 43.799913] ? p9_fd_show_options+0x1c0/0x1c0 [ 43.804390] ? __raw_spin_lock_init+0x2d/0x100 [ 43.808954] p9_client_create+0xdb0/0x1770 executing program executing program executing program executing program executing program [ 43.813173] ? p9_client_read+0xc60/0xc60 [ 43.817302] ? kasan_check_read+0x11/0x20 [ 43.821430] ? lock_acquire+0x1e4/0x540 [ 43.825386] ? fs_reclaim_acquire+0x20/0x20 [ 43.829687] ? lock_release+0xa30/0xa30 [ 43.833641] ? __lockdep_init_map+0x105/0x590 [ 43.838120] ? kasan_check_write+0x14/0x20 [ 43.842336] ? __init_rwsem+0x1cc/0x2a0 [ 43.846289] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 43.851289] ? __kmalloc_track_caller+0x311/0x760 [ 43.856111] ? save_stack+0xa9/0xd0 [ 43.859716] ? save_stack+0x43/0xd0 executing program executing program executing program executing program executing program executing program executing program [ 43.863325] ? kasan_kmalloc+0xc4/0xe0 [ 43.867206] ? kmem_cache_alloc_trace+0x152/0x780 [ 43.872029] ? memcpy+0x45/0x50 [ 43.875288] v9fs_session_init+0x21a/0x1a80 [ 43.879591] ? rcu_note_context_switch+0x730/0x730 [ 43.884509] ? do_mount+0x69e/0x1fb0 [ 43.888204] ? lock_acquire+0x1e4/0x540 [ 43.892157] ? v9fs_show_options+0x7e0/0x7e0 [ 43.896555] ? lock_release+0xa30/0xa30 [ 43.900511] ? check_same_owner+0x340/0x340 [ 43.904815] ? kasan_unpoison_shadow+0x35/0x50 [ 43.909377] ? kasan_kmalloc+0xc4/0xe0 executing program executing program executing program executing program executing program executing program executing program executing program [ 43.913248] ? kmem_cache_alloc_trace+0x318/0x780 [ 43.918073] ? kasan_unpoison_shadow+0x35/0x50 [ 43.922634] ? kasan_kmalloc+0xc4/0xe0 [ 43.926503] v9fs_mount+0x7c/0x900 [ 43.930026] ? v9fs_drop_inode+0x150/0x150 [ 43.934239] legacy_get_tree+0x118/0x440 [ 43.938283] vfs_get_tree+0x1cb/0x5c0 [ 43.942074] do_mount+0x6c1/0x1fb0 [ 43.945604] ? kasan_check_write+0x14/0x20 [ 43.949819] ? copy_mount_string+0x40/0x40 [ 43.954034] ? kasan_kmalloc+0xc4/0xe0 [ 43.957904] ? kmem_cache_alloc_trace+0x318/0x780 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.962740] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 43.968258] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.973778] ? copy_mount_options+0x285/0x380 [ 43.978253] ksys_mount+0x12d/0x140 [ 43.981858] __x64_sys_mount+0xbe/0x150 [ 43.985821] do_syscall_64+0x1b9/0x820 [ 43.989689] ? finish_task_switch+0x1d3/0x870 [ 43.994163] ? syscall_return_slowpath+0x5e0/0x5e0 [ 43.999075] ? syscall_return_slowpath+0x31d/0x5e0 [ 44.003986] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 44.008982] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 executing program executing program executing program executing program executing program executing program executing program executing program [ 44.014497] ? prepare_exit_to_usermode+0x291/0x3b0 [ 44.019502] ? perf_trace_sys_enter+0xb10/0xb10 [ 44.024150] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.028984] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.034162] RIP: 0033:0x445f59 [ 44.037333] Code: e8 ac e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 44.056464] RSP: 002b:00007f73ca3f2da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 executing program executing program executing program executing program executing program executing program executing program executing program [ 44.064153] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445f59 [ 44.071402] RDX: 0000000020000300 RSI: 00000000200002c0 RDI: 0000000000000000 [ 44.078652] RBP: 00000000006dbc20 R08: 0000000020000480 R09: 0000000000000000 [ 44.085905] R10: 0000000000000018 R11: 0000000000000202 R12: 3d6e6f6973726576 [ 44.093181] R13: 0030656c69662f2e R14: 64663d736e617274 R15: 0000000000002710 [ 44.100435] Modules linked in: [ 44.103621] Dumping ftrace buffer: [ 44.107137] (ftrace buffer empty) [ 44.110897] ---[ end trace 8174662198fabb7b ]--- executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.115664] RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 [ 44.121555] Code: ff fd 0f 0b 4c 89 e2 48 89 de 48 c7 c7 20 8e 1a 88 e8 9a 14 ff fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 c0 8d 1a 88 e8 86 14 ff fd <0f> 0b 48 89 de 48 c7 c7 e0 8e 1a 88 e8 75 14 ff fd 0f 0b 48 89 de [ 44.140714] RSP: 0018:ffff8801ca89f270 EFLAGS: 00010286 [ 44.146100] RAX: 000000000000004e RBX: ffff8801a3ef91e8 RCX: 0000000000000000 [ 44.153392] RDX: 0000000000000000 RSI: ffffffff81634151 RDI: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.160678] RBP: ffff8801ca89f288 R08: ffff8801cb39e140 R09: ffffed003b5e4fc0 [ 44.167951] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: dead000000000200 [ 44.175219] R13: dead000000000100 R14: ffff8801a3ef91e8 R15: ffff8801a3ef91f0 [ 44.182500] FS: 00007f73ca3f3700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 44.190723] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.196632] CR2: 000000000046a540 CR3: 00000001cac17000 CR4: 00000000001406e0 [ 44.203919] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 executing program [ 44.211201] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.218472] Kernel panic - not syncing: Fatal exception [ 44.224197] Dumping ftrace buffer: [ 44.227713] (ftrace buffer empty) [ 44.231401] Kernel Offset: disabled [ 44.235023] Rebooting in 86400 seconds..