[ 15.786999] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.632806] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 20.946890] random: sshd: uninitialized urandom read (32 bytes read, 37 bits of entropy available) [ 21.743644] random: sshd: uninitialized urandom read (32 bytes read, 96 bits of entropy available) [ 44.178658] random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-3,10.128.0.43' (ECDSA) to the list of known hosts. [ 49.550616] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) executing program [ 49.644915] kasan: CONFIG_KASAN_INLINE enabled [ 49.649329] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.662127] Dumping ftrace buffer: [ 49.665629] (ftrace buffer empty) [ 49.669305] Modules linked in: [ 49.672574] CPU: 0 PID: 3341 Comm: syzkaller877370 Not tainted 4.4.107-g610c835 #12 [ 49.680329] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.689646] task: ffff8801cfc52f80 task.stack: ffff8801d1140000 [ 49.695667] RIP: 0010:[] [] __list_del_entry+0x86/0x1d0 [ 49.704321] RSP: 0018:ffff8801d1147628 EFLAGS: 00010246 [ 49.709734] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8800b74f5a10 [ 49.716977] RDX: 0000000000000000 RSI: ffffffff851b2510 RDI: ffff8800b74f5a18 [ 49.724474] RBP: ffff8801d1147640 R08: 0000000000000001 R09: 0000000000000000 [ 49.731708] R10: 0000000000000001 R11: 1ffff1003a228e94 R12: 0000000000000000 [ 49.738941] R13: ffff8800b74f59b9 R14: ffff8800b74f5a38 R15: 00000000ffffffde [ 49.746173] FS: 00000000022e7880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 49.754361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.760214] CR2: 0000000020239000 CR3: 00000001d05c4000 CR4: 00000000001406f0 [ 49.767455] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.774689] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.781920] Stack: [ 49.784031] ffff8800b74f5a38 ffff8800b74f5a10 ffffffff846eb040 ffff8801d1147658 [ 49.791971] ffffffff81d6432d ffff8800b74f5a10 ffff8801d1147678 ffffffff832b081e [ 49.799912] ffff8800b7032a80 ffff8800b74f5a10 ffff8801d1147698 ffffffff832cfd73 [ 49.807852] Call Trace: [ 49.810406] [] list_del+0xd/0x70 [ 49.815386] [] xfrm_state_walk_done+0x6e/0xa0 [ 49.821492] [] xfrm_dump_sa_done+0x73/0xa0 [ 49.827338] [] ? xfrm_dump_policy_start+0x20/0x20 [ 49.833791] [] netlink_dump+0x871/0xb40 [ 49.839375] [] __netlink_dump_start+0x52e/0x7c0 [ 49.845656] [] ? __netlink_ns_capable+0xe1/0x120 [ 49.852028] [] xfrm_user_rcv_msg+0x5bd/0x6b0 [ 49.858048] [] ? xfrm_user_rcv_msg+0x6b0/0x6b0 [ 49.865109] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 49.871480] [] ? xfrm_user_rcv_msg+0x6b0/0x6b0 [ 49.877678] [] ? xfrm_dump_policy_start+0x20/0x20 [ 49.884135] [] ? avc_has_perm_noaudit+0x460/0x460 [ 49.890589] [] ? mark_held_locks+0xaf/0x100 [ 49.896527] [] ? mutex_lock_nested+0x5d4/0x850 [ 49.903761] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 49.910564] [] ? mutex_lock_nested+0x560/0x850 [ 49.916757] [] ? xfrm_netlink_rcv+0x60/0x90 [ 49.922692] [] ? netlink_lookup+0xee/0x740 [ 49.928537] [] netlink_rcv_skb+0x13e/0x370 [ 49.934380] [] ? xfrm_dump_sa_done+0xa0/0xa0 [ 49.940399] [] xfrm_netlink_rcv+0x6f/0x90 [ 49.946158] [] netlink_unicast+0x522/0x760 [ 49.952003] [] ? netlink_unicast+0x44f/0x760 [ 49.958024] [] ? netlink_attachskb+0x6c0/0x6c0 [ 49.964225] [] netlink_sendmsg+0x8e8/0xc50 [ 49.970070] [] ? netlink_unicast+0x760/0x760 [ 49.976096] [] ? selinux_socket_sendmsg+0x3f/0x50 [ 49.982554] [] ? security_socket_sendmsg+0x89/0xb0 [ 49.989096] [] ? netlink_unicast+0x760/0x760 [ 49.995118] [] sock_sendmsg+0xca/0x110 [ 50.000617] [] sock_write_iter+0x226/0x3b0 [ 50.006469] [] ? avc_has_perm_noaudit+0x460/0x460 [ 50.012926] [] ? sock_sendmsg+0x110/0x110 [ 50.018689] [] ? iov_iter_init+0xaf/0x1d0 [ 50.024458] [] __vfs_write+0x33c/0x450 [ 50.029958] [] ? __vfs_read+0x440/0x440 [ 50.035544] [] ? _raw_spin_unlock+0x2c/0x50 [ 50.041477] [] ? handle_mm_fault+0x3f2/0x3190 [ 50.047591] [] ? selinux_file_permission+0x348/0x460 [ 50.054308] [] ? rw_verify_area+0x100/0x2f0 [ 50.060241] [] vfs_write+0x18a/0x530 [ 50.065566] [] SyS_write+0xd9/0x1b0 [ 50.070807] [] ? SyS_read+0x1b0/0x1b0 [ 50.076219] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 50.082765] [] entry_SYSCALL_64_fastpath+0x16/0x76 [ 50.089302] Code: c4 0f 84 94 00 00 00 48 b8 00 02 00 00 00 00 ad de 48 39 c3 0f 84 a5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 00 00 00 4c 8b 03 49 39 c8 0f 85 9b 00 00 [ 50.115507] RIP [] __list_del_entry+0x86/0x1d0 [ 50.121816] RSP [ 50.125448] ---[ end trace 1a116fbea6ba355f ]--- [ 50.130177] Kernel panic - not syncing: Fatal exception in interrupt [ 50.137090] Dumping ftrace buffer: [ 50.140598] (ftrace buffer empty) [ 50.144274] Kernel Offset: disabled [ 50.147866] Rebooting in 86400 seconds..