[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.865255] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.914491] random: sshd: uninitialized urandom read (32 bytes read) [ 23.304927] random: sshd: uninitialized urandom read (32 bytes read) [ 24.020559] random: sshd: uninitialized urandom read (32 bytes read) [ 46.396334] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. [ 51.810694] 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 [ 102.439445] list_del corruption. prev->next should be ffff8801a3ee09a8, but was ffff8801cd58f3b0 [ 102.448658] ------------[ cut here ]------------ [ 102.453400] kernel BUG at lib/list_debug.c:53! [ 102.458029] invalid opcode: 0000 [#1] SMP KASAN [ 102.462694] CPU: 1 PID: 7466 Comm: syz-executor804 Not tainted 4.18.0-rc4-next-20180710+ #3 [ 102.471248] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 102.480620] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 [ 102.486498] Code: 86 1a 88 e8 e6 1e ff fd 0f 0b 48 89 de 48 c7 c7 60 87 1a 88 e8 d5 1e ff fd 0f 0b 48 89 de 48 c7 c7 00 87 1a 88 e8 c4 1e ff fd <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 102.506868] RSP: 0018:ffff8801cb22f270 EFLAGS: 00010286 [ 102.512233] RAX: 0000000000000054 RBX: ffff8801a3ee09a8 RCX: 0000000000000000 [ 102.519500] RDX: 0000000000000000 RSI: ffffffff81634451 RDI: 0000000000000001 [ 102.526754] RBP: ffff8801cb22f288 R08: ffff8801cad042c0 R09: ffffed003b5e4fc0 [ 102.534018] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801cd58f3b0 [ 102.541359] R13: ffff8801cd58f3b0 R14: ffff8801a3ee09a8 R15: ffff8801a3ee09b0 [ 102.548615] FS: 00007fda4520e700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 102.557373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.563239] CR2: 000000000046a450 CR3: 00000001cb36e000 CR4: 00000000001406e0 [ 102.570597] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.577867] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.585132] Call Trace: [ 102.587709] p9_fd_cancel+0x104/0x360 [ 102.591492] ? p9_fd_close+0x5b0/0x5b0 [ 102.595447] ? p9_pollwait+0x83/0x230 [ 102.599239] p9_client_rpc+0xf1f/0x1400 [ 102.603480] ? p9_client_prepare_req.part.9+0xcd0/0xcd0 [ 102.608832] ? ksys_dup3+0x690/0x690 [ 102.612541] ? check_same_owner+0x340/0x340 [ 102.616857] ? p9_fd_poll+0x2b0/0x2b0 [ 102.620742] ? finish_wait+0x430/0x430 [ 102.624775] ? kasan_unpoison_shadow+0x35/0x50 [ 102.629347] ? p9_fd_show_options+0x1c0/0x1c0 [ 102.633823] ? __raw_spin_lock_init+0x2d/0x100 [ 102.638401] p9_client_create+0xd09/0x16c9 [ 102.642626] ? p9_client_read+0xc60/0xc60 [ 102.646931] ? kasan_check_read+0x11/0x20 [ 102.651090] ? lock_acquire+0x1e4/0x540 [ 102.655165] ? fs_reclaim_acquire+0x20/0x20 [ 102.659478] ? lock_release+0xa30/0xa30 [ 102.663434] ? __lockdep_init_map+0x105/0x590 [ 102.668055] ? kasan_check_write+0x14/0x20 [ 102.672380] ? __init_rwsem+0x1cc/0x2a0 [ 102.676336] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 102.681361] ? __kmalloc_track_caller+0x311/0x760 [ 102.686186] ? save_stack+0xa9/0xd0 [ 102.689930] ? save_stack+0x43/0xd0 [ 102.693576] ? kasan_kmalloc+0xc4/0xe0 [ 102.697661] ? kmem_cache_alloc_trace+0x152/0x780 [ 102.702512] ? memcpy+0x45/0x50 [ 102.705801] v9fs_session_init+0x21a/0x1a80 [ 102.710131] ? rcu_note_context_switch+0x730/0x730 [ 102.715090] ? do_mount+0x69e/0x1fb0 [ 102.718825] ? lock_acquire+0x1e4/0x540 [ 102.722887] ? v9fs_show_options+0x7e0/0x7e0 [ 102.727314] ? lock_release+0xa30/0xa30 [ 102.731484] ? check_same_owner+0x340/0x340 [ 102.735794] ? kasan_unpoison_shadow+0x35/0x50 [ 102.740539] ? kasan_kmalloc+0xc4/0xe0 [ 102.744424] ? kmem_cache_alloc_trace+0x318/0x780 [ 102.749256] ? kasan_unpoison_shadow+0x35/0x50 [ 102.753837] ? kasan_kmalloc+0xc4/0xe0 [ 102.757719] v9fs_mount+0x7c/0x900 [ 102.761244] ? v9fs_drop_inode+0x150/0x150 [ 102.765550] legacy_get_tree+0x118/0x440 [ 102.769793] vfs_get_tree+0x1cb/0x5c0 [ 102.773584] do_mount+0x6c1/0x1fb0 [ 102.777114] ? kasan_check_write+0x14/0x20 [ 102.781439] ? copy_mount_string+0x40/0x40 [ 102.785663] ? kasan_kmalloc+0xc4/0xe0 [ 102.789567] ? kmem_cache_alloc_trace+0x318/0x780 [ 102.794505] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 102.800442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.806163] ? copy_mount_options+0x285/0x380 [ 102.810756] ksys_mount+0x12d/0x140 [ 102.816107] __x64_sys_mount+0xbe/0x150 [ 102.820097] do_syscall_64+0x1b9/0x820 [ 102.824104] ? finish_task_switch+0x1d3/0x870 [ 102.828621] ? syscall_return_slowpath+0x5e0/0x5e0 [ 102.833560] ? syscall_return_slowpath+0x31d/0x5e0 [ 102.838509] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 102.843545] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.849096] ? prepare_exit_to_usermode+0x291/0x3b0 [ 102.854144] ? perf_trace_sys_enter+0xb10/0xb10 [ 102.858932] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 102.863778] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 102.868958] RIP: 0033:0x445e69 [ 102.872214] Code: e8 ec ba 02 00 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 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 102.891713] RSP: 002b:00007fda4520dda8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 102.899439] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445e69 [ 102.906803] RDX: 0000000020002d40 RSI: 0000000020002d00 RDI: 0000000000000000 [ 102.914329] RBP: 00000000006dbc20 R08: 0000000020002d80 R09: 0000000000000000 [ 102.921590] R10: 0000000000200000 R11: 0000000000000202 R12: 0030656c69662f2e [ 102.928884] R13: 633d737365636361 R14: 64663d736e617274 R15: 0000000000000001 [ 102.936196] Modules linked in: [ 102.939469] Dumping ftrace buffer: [ 102.943220] (ftrace buffer empty) [ 102.947087] ---[ end trace e1149ac3cf24e085 ]--- [ 102.951869] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 [ 102.957764] Code: 86 1a 88 e8 e6 1e ff fd 0f 0b 48 89 de 48 c7 c7 60 87 1a 88 e8 d5 1e ff fd 0f 0b 48 89 de 48 c7 c7 00 87 1a 88 e8 c4 1e ff fd <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 102.976942] RSP: 0018:ffff8801cb22f270 EFLAGS: 00010286 [ 102.982327] RAX: 0000000000000054 RBX: ffff8801a3ee09a8 RCX: 0000000000000000 [ 102.989609] RDX: 0000000000000000 RSI: ffffffff81634451 RDI: 0000000000000001 [ 102.996896] RBP: ffff8801cb22f288 R08: ffff8801cad042c0 R09: ffffed003b5e4fc0 [ 103.004196] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801cd58f3b0 [ 103.011473] R13: ffff8801cd58f3b0 R14: ffff8801a3ee09a8 R15: ffff8801a3ee09b0 [ 103.018877] FS: 00007fda4520e700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 103.027352] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 103.033434] CR2: 000000000046a450 CR3: 00000001cb36e000 CR4: 00000000001406e0 [ 103.040867] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 103.048180] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 103.055548] Kernel panic - not syncing: Fatal exception [ 103.061349] Dumping ftrace buffer: [ 103.064956] (ftrace buffer empty) [ 103.068666] Kernel Offset: disabled [ 103.072283] Rebooting in 86400 seconds..