[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 18.902890] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.912150] random: sshd: uninitialized urandom read (32 bytes read) [ 23.193281] random: sshd: uninitialized urandom read (32 bytes read) [ 24.062686] random: sshd: uninitialized urandom read (32 bytes read) [ 24.210403] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. [ 29.685458] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 29.776326] kasan: CONFIG_KASAN_INLINE enabled [ 29.781040] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.788438] general protection fault: 0000 [#1] SMP KASAN [ 29.793974] CPU: 1 PID: 4527 Comm: syz-executor611 Not tainted 4.18.0-rc4+ #42 [ 29.801309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.810657] RIP: 0010:strlen+0x1f/0xa0 [ 29.814522] Code: ff ff ff 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 c1 ea 03 48 89 e5 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 29.833649] RSP: 0018:ffff8801ad1d7398 EFLAGS: 00010292 [ 29.839083] RAX: dffffc0000000000 RBX: 1ffff10035a3ae7b RCX: ffffffff8766d02b [ 29.846330] RDX: 0000000000000000 RSI: ffffffff87679de2 RDI: 0000000000000000 [ 29.853583] RBP: ffff8801ad1d73b0 R08: ffff8801d9762200 R09: 0000000000000000 [ 29.860837] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: 0000000000000000 [ 29.868083] R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff10035a3aeb2 [ 29.875334] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:0000000009aa8840 [ 29.883536] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.889408] CR2: 00000000200003c0 CR3: 00000001d96e0000 CR4: 00000000001406e0 [ 29.896661] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.903910] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.911164] Call Trace: [ 29.913749] p9_fd_create_unix+0xbf/0x370 [ 29.917893] ? p9_socket_open+0x220/0x220 [ 29.922035] ? p9_idpool_create+0x42/0x190 [ 29.926262] ? rcu_read_lock_sched_held+0x108/0x120 [ 29.931259] ? kmem_cache_alloc_trace+0x616/0x780 [ 29.936087] ? __lockdep_init_map+0x105/0x590 [ 29.940565] ? lockdep_init_map+0x9/0x10 [ 29.944866] ? __raw_spin_lock_init+0x2d/0x100 [ 29.949437] p9_client_create+0x915/0x16c9 [ 29.953670] ? p9_client_read+0xc60/0xc60 [ 29.957798] ? find_held_lock+0x36/0x1c0 [ 29.961842] ? __lockdep_init_map+0x105/0x590 [ 29.966318] ? kasan_check_write+0x14/0x20 [ 29.970530] ? __init_rwsem+0x1cc/0x2a0 [ 29.974484] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 29.979482] ? rcu_read_lock_sched_held+0x108/0x120 [ 29.984654] ? __kmalloc_track_caller+0x5f5/0x760 [ 29.989476] ? save_stack+0xa9/0xd0 [ 29.993083] ? save_stack+0x43/0xd0 [ 29.996686] ? kasan_kmalloc+0xc4/0xe0 [ 30.000561] ? memcpy+0x45/0x50 [ 30.003823] v9fs_session_init+0x21a/0x1a80 [ 30.008126] ? find_held_lock+0x36/0x1c0 [ 30.012168] ? v9fs_show_options+0x7e0/0x7e0 [ 30.016564] ? kasan_check_read+0x11/0x20 [ 30.020689] ? rcu_is_watching+0x8c/0x150 [ 30.024813] ? rcu_pm_notify+0xc0/0xc0 [ 30.028676] ? rcu_pm_notify+0xc0/0xc0 [ 30.032551] ? v9fs_mount+0x61/0x900 [ 30.036242] ? rcu_read_lock_sched_held+0x108/0x120 [ 30.041237] ? kmem_cache_alloc_trace+0x616/0x780 [ 30.046061] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 30.051577] v9fs_mount+0x7c/0x900 [ 30.055102] mount_fs+0xae/0x328 [ 30.058449] vfs_kern_mount.part.34+0xdc/0x4e0 [ 30.063016] ? may_umount+0xb0/0xb0 [ 30.066633] ? _raw_read_unlock+0x22/0x30 [ 30.070762] ? __get_fs_type+0x97/0xc0 [ 30.074637] do_mount+0x581/0x30e0 [ 30.078160] ? copy_mount_string+0x40/0x40 [ 30.082387] ? retint_kernel+0x10/0x10 [ 30.086260] ? copy_mount_options+0x1e3/0x380 [ 30.090735] ? audit_kill_trees+0x450/0x450 [ 30.095047] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.100577] ? copy_mount_options+0x285/0x380 [ 30.105064] __ia32_compat_sys_mount+0x5d5/0x860 [ 30.109804] do_fast_syscall_32+0x34d/0xfb2 [ 30.114107] ? do_int80_syscall_32+0x890/0x890 [ 30.118668] ? do_syscall_64+0x497/0x820 [ 30.122710] ? syscall_slow_exit_work+0x500/0x500 [ 30.127533] ? syscall_return_slowpath+0x5e0/0x5e0 [ 30.132445] ? syscall_return_slowpath+0x31d/0x5e0 [ 30.137369] ? sysret32_from_system_call+0x5/0x46 [ 30.142198] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.147043] entry_SYSENTER_compat+0x70/0x7f [ 30.151441] RIP: 0023:0xf7f09cb9 [ 30.154778] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 30.173893] RSP: 002b:00000000ff943bac EFLAGS: 00000286 ORIG_RAX: 0000000000000015 [ 30.181581] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000200000c0 [ 30.188827] RDX: 0000000020000340 RSI: 0000000000000000 RDI: 00000000200006c0 [ 30.196080] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000 [ 30.203332] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 30.210591] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 30.217853] Modules linked in: [ 30.221031] Dumping ftrace buffer: [ 30.224551] (ftrace buffer empty) [ 30.228349] ---[ end trace fe903ba4024485fe ]--- [ 30.233133] RIP: 0010:strlen+0x1f/0xa0 [ 30.237030] Code: ff ff ff 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 c1 ea 03 48 89 e5 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 30.256291] RSP: 0018:ffff8801ad1d7398 EFLAGS: 00010292 [ 30.261668] RAX: dffffc0000000000 RBX: 1ffff10035a3ae7b RCX: ffffffff8766d02b [ 30.268936] RDX: 0000000000000000 RSI: ffffffff87679de2 RDI: 0000000000000000 [ 30.276211] RBP: ffff8801ad1d73b0 R08: ffff8801d9762200 R09: 0000000000000000 [ 30.283491] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: 0000000000000000 [ 30.290765] R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff10035a3aeb2 [ 30.298053] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:0000000009aa8840 [ 30.306277] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 30.312157] CR2: 00000000200003c0 CR3: 00000001d96e0000 CR4: 00000000001406e0 [ 30.319432] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.326709] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.333978] Kernel panic - not syncing: Fatal exception [ 30.340061] Dumping ftrace buffer: [ 30.343674] (ftrace buffer empty) [ 30.347363] Kernel Offset: disabled [ 30.350976] Rebooting in 86400 seconds..