[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.668331] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.804923] random: sshd: uninitialized urandom read (32 bytes read) [ 24.126469] random: sshd: uninitialized urandom read (32 bytes read) [ 24.998326] random: sshd: uninitialized urandom read (32 bytes read) [ 25.154246] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.15.199' (ECDSA) to the list of known hosts. [ 30.644307] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.472502] list_del corruption. prev->next should be ffff88019a96b2a8, but was ffff8801d94473b0 [ 42.481951] ------------[ cut here ]------------ [ 42.486709] kernel BUG at lib/list_debug.c:53! [ 42.491379] invalid opcode: 0000 [#1] SMP KASAN [ 42.496048] CPU: 1 PID: 10044 Comm: syz-executor110 Not tainted 4.18.0-rc4+ #139 [ 42.503576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.512928] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 executing program executing program executing program executing program executing program executing program [ 42.518793] Code: 65 1a 88 e8 36 6e 02 fe 0f 0b 48 89 de 48 c7 c7 e0 66 1a 88 e8 25 6e 02 fe 0f 0b 48 89 de 48 c7 c7 80 66 1a 88 e8 14 6e 02 fe <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 42.537929] RSP: 0018:ffff88019af2f1c0 EFLAGS: 00010286 [ 42.543288] RAX: 0000000000000054 RBX: ffff88019a96b2a8 RCX: 0000000000000000 [ 42.550560] RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 [ 42.557831] RBP: ffff88019af2f1d8 R08: ffff8801b9894040 R09: ffffed003b5e4fc0 [ 42.565096] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801d94473b0 executing program executing program executing program executing program executing program executing program [ 42.572366] R13: ffff8801d94473b0 R14: ffff88019a96b2a8 R15: ffff88019a96b2b0 [ 42.579634] FS: 00007fda66b34700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 42.587873] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.593750] CR2: 00007fda66b33e78 CR3: 00000001bee3c000 CR4: 00000000001406e0 [ 42.601024] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.608306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.615578] Call Trace: [ 42.618165] p9_fd_cancel+0x104/0x360 executing program executing program executing program executing program executing program executing program [ 42.621964] ? p9_fd_close+0x5b0/0x5b0 [ 42.625851] ? p9_pollwait+0x83/0x230 [ 42.629664] p9_client_rpc+0xf1f/0x1400 [ 42.633636] ? p9_client_prepare_req.part.8+0xcd0/0xcd0 [ 42.638994] ? __fget+0x414/0x670 [ 42.642440] ? rcu_is_watching+0x61/0x150 [ 42.646580] ? expand_files.part.8+0x9c0/0x9c0 [ 42.651158] ? finish_wait+0x430/0x430 [ 42.655042] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.660086] ? p9_fd_show_options+0x1c0/0x1c0 [ 42.664583] ? lockdep_init_map+0x9/0x10 [ 42.668634] p9_client_create+0xd09/0x16c9 executing program executing program executing program executing program executing program executing program [ 42.672870] ? p9_client_read+0xc60/0xc60 [ 42.677004] ? find_held_lock+0x36/0x1c0 [ 42.681080] ? __lockdep_init_map+0x105/0x590 [ 42.685581] ? kasan_check_write+0x14/0x20 [ 42.689817] ? __init_rwsem+0x1cc/0x2a0 [ 42.693794] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 42.698805] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.703814] ? __kmalloc_track_caller+0x5f5/0x760 [ 42.708650] ? save_stack+0xa9/0xd0 [ 42.712270] ? save_stack+0x43/0xd0 [ 42.715892] ? kasan_kmalloc+0xc4/0xe0 executing program executing program executing program executing program executing program executing program [ 42.719765] ? kmem_cache_alloc_trace+0x152/0x780 [ 42.724592] ? memcpy+0x45/0x50 [ 42.727870] v9fs_session_init+0x21a/0x1a80 [ 42.732195] ? find_held_lock+0x36/0x1c0 [ 42.736265] ? v9fs_show_options+0x7e0/0x7e0 [ 42.740680] ? kasan_check_read+0x11/0x20 [ 42.744819] ? rcu_is_watching+0x8c/0x150 [ 42.748957] ? rcu_pm_notify+0xc0/0xc0 [ 42.752849] ? v9fs_mount+0x61/0x900 [ 42.756558] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.761563] ? kmem_cache_alloc_trace+0x616/0x780 [ 42.766395] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 executing program executing program executing program executing program executing program executing program [ 42.771919] v9fs_mount+0x7c/0x900 [ 42.775453] mount_fs+0xae/0x328 [ 42.778820] vfs_kern_mount.part.34+0xdc/0x4e0 [ 42.783402] ? may_umount+0xb0/0xb0 [ 42.787028] ? _raw_read_unlock+0x22/0x30 [ 42.791176] ? __get_fs_type+0x97/0xc0 [ 42.795067] do_mount+0x581/0x30e0 [ 42.798618] ? copy_mount_string+0x40/0x40 [ 42.802871] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.807621] ? retint_kernel+0x10/0x10 [ 42.811510] ? copy_mount_options+0x1a1/0x380 [ 42.816004] ? copy_mount_options+0x1d6/0x380 executing program executing program executing program executing program executing program executing program executing program [ 42.820500] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.826033] ? copy_mount_options+0x285/0x380 [ 42.830529] ksys_mount+0x12d/0x140 [ 42.834155] __x64_sys_mount+0xbe/0x150 [ 42.838132] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.843149] do_syscall_64+0x1b9/0x820 [ 42.847033] ? finish_task_switch+0x1d3/0x870 [ 42.851521] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.856433] ? syscall_return_slowpath+0x31d/0x5e0 [ 42.861357] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 42.866715] ? trace_hardirqs_off_thunk+0x1a/0x1c executing program executing program executing program executing program executing program executing program [ 42.871558] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.876734] RIP: 0033:0x445e59 [ 42.879898] 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 [ 42.899063] RSP: 002b:00007fda66b33da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 42.906786] RAX: ffffffffffffffda RBX: 00000000006dbc3c RCX: 0000000000445e59 [ 42.914859] RDX: 0000000020000480 RSI: 00000000200002c0 RDI: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program [ 42.922125] RBP: 0000000000000000 R08: 0000000020000040 R09: 0000000000000000 [ 42.929385] R10: 0000000000000003 R11: 0000000000000202 R12: 00000000006dbc38 [ 42.936655] R13: 0030656c69662f2e R14: 64663d736e617274 R15: 0000000000000004 [ 42.943930] Modules linked in: [ 42.947121] Dumping ftrace buffer: [ 42.950652] (ftrace buffer empty) [ 42.954410] ---[ end trace 75222d6c5dc9499d ]--- [ 42.959196] RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 executing program executing program executing program executing program executing program executing program [ 42.965102] Code: 65 1a 88 e8 36 6e 02 fe 0f 0b 48 89 de 48 c7 c7 e0 66 1a 88 e8 25 6e 02 fe 0f 0b 48 89 de 48 c7 c7 80 66 1a 88 e8 14 6e 02 fe <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 [ 42.984376] RSP: 0018:ffff88019af2f1c0 EFLAGS: 00010286 [ 42.989761] RAX: 0000000000000054 RBX: ffff88019a96b2a8 RCX: 0000000000000000 [ 42.997062] RDX: 0000000000000000 RSI: ffffffff81631821 RDI: 0000000000000001 [ 43.004353] RBP: ffff88019af2f1d8 R08: ffff8801b9894040 R09: ffffed003b5e4fc0 [ 43.011651] R10: ffffed003b5e4fc0 R11: ffff8801daf27e07 R12: ffff8801d94473b0 executing program executing program executing program executing program executing program executing program [ 43.018939] R13: ffff8801d94473b0 R14: ffff88019a96b2a8 R15: ffff88019a96b2b0 [ 43.026230] FS: 00007fda66b34700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 43.034479] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.040400] CR2: 00007fda66b33e78 CR3: 00000001bee3c000 CR4: 00000000001406e0 [ 43.047685] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.054982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.062273] Kernel panic - not syncing: Fatal exception [ 43.068199] Dumping ftrace buffer: [ 43.071730] (ftrace buffer empty) [ 43.075414] Kernel Offset: disabled [ 43.079028] Rebooting in 86400 seconds..