[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.006880] random: sshd: uninitialized urandom read (32 bytes read, 33 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.510625] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 21.804145] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 22.681476] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) [ 22.874830] random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-4,10.128.0.43' (ECDSA) to the list of known hosts. [ 28.274383] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 [ 28.516825] IPVS: Creating netns size=2552 id=1 executing program [ 28.572471] kasan: CONFIG_KASAN_INLINE enabled [ 28.576891] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.589701] Dumping ftrace buffer: [ 28.593206] (ftrace buffer empty) [ 28.596883] Modules linked in: [ 28.600156] CPU: 1 PID: 3353 Comm: syzkaller335555 Not tainted 4.4.107-g610c835 #12 [ 28.607923] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.617246] task: ffff8800b43f97c0 task.stack: ffff8801d0400000 [ 28.623280] RIP: 0010:[] [] sg_read+0xd1d/0x1490 [ 28.631334] RSP: 0018:ffff8801d0407b00 EFLAGS: 00010246 [ 28.636754] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194 [ 28.643989] RDX: 0000000000000000 RSI: 0000000020c4afe5 RDI: ffff8801cf81a270 [ 28.651225] RBP: ffff8801d0407c08 R08: 8551c99c2a45b4bd R09: 0000000000000001 [ 28.658459] R10: 0000000000000000 R11: 1ffff1003a080f26 R12: 0000000000000093 [ 28.665695] R13: 0000000000000000 R14: ffff8800b6bbacc0 R15: ffff8801cf81a240 [ 28.672933] FS: 00007fa9d04a2700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 28.681125] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.686972] CR2: 0000000020c4afc1 CR3: 00000000b502e000 CR4: 00000000001406e0 [ 28.694230] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.701478] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.708716] Stack: [ 28.710830] 0000000000000000 000077ff80000000 ffff8801d0407b60 ffff8801cf81a258 [ 28.718792] 0000000000000008 ffff8801cf81a268 00000000000000b7 0000000000000007 [ 28.726739] ffff8800b7ef7680 0000000000001000 1ffff1003a080f6c 0000000020c4afe5 [ 28.734686] Call Trace: [ 28.737262] [] ? sg_proc_seq_show_debug+0xd30/0xd30 [ 28.743897] [] ? fsnotify+0xee0/0xee0 [ 28.749313] [] ? avc_policy_seqno+0x9/0x20 [ 28.755173] [] do_loop_readv_writev+0x141/0x1e0 [ 28.761464] [] ? security_file_permission+0x89/0x1e0 [ 28.768183] [] ? sg_proc_seq_show_debug+0xd30/0xd30 [ 28.774822] [] ? sg_proc_seq_show_debug+0xd30/0xd30 [ 28.781463] [] do_readv_writev+0x5dd/0x6e0 [ 28.787322] [] ? vfs_write+0x530/0x530 [ 28.792824] [] ? __fget+0x232/0x3b0 [ 28.798071] [] ? __fget+0x47/0x3b0 [ 28.803402] [] vfs_readv+0x78/0xb0 [ 28.808557] [] SyS_readv+0xd9/0x240 [ 28.813799] [] ? rw_copy_check_uvector+0x2d0/0x2d0 [ 28.820345] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 28.826902] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 28.833444] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 97 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6b 06 00 00 48 8b 1b 48 85 db 0f 84 3b 03 00 [ 28.859762] RIP [] sg_read+0xd1d/0x1490 [ 28.865475] RSP [ 28.870676] ---[ end trace ab0654869a388cb5 ]--- [ 28.875426] Kernel panic - not syncing: Fatal exception [ 28.881207] Dumping ftrace buffer: [ 28.884718] (ftrace buffer empty) [ 28.888396] Kernel Offset: disabled [ 28.891986] Rebooting in 86400 seconds..