[ 14.253192] 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: [ 37.562992] random: sshd: uninitialized urandom read (32 bytes read, 44 bits of entropy available) [ 37.835931] random: sshd: uninitialized urandom read (32 bytes read, 44 bits of entropy available) [ 38.418994] random: sshd: uninitialized urandom read (32 bytes read, 105 bits of entropy available) [ 38.567790] random: sshd: uninitialized urandom read (32 bytes read, 111 bits of entropy available) Warning: Permanently added 'ci-android-44-kasan-gce-2,10.128.15.223' (ECDSA) to the list of known hosts. [ 43.938368] random: sshd: uninitialized urandom read (32 bytes read, 119 bits of entropy available) executing program [ 44.025846] kasan: CONFIG_KASAN_INLINE enabled [ 44.030296] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 44.043113] Dumping ftrace buffer: [ 44.046616] (ftrace buffer empty) [ 44.050290] Modules linked in: [ 44.053559] CPU: 1 PID: 3323 Comm: syzkaller462936 Not tainted 4.4.104-ged884eb #2 [ 44.061229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.070557] task: ffff8800b9330000 task.stack: ffff8800b7c88000 [ 44.076576] RIP: 0010:[<ffffffff81d28fd6>] [<ffffffff81d28fd6>] __list_del_entry+0x86/0x1d0 [ 44.085235] RSP: 0018:ffff8800b7c8f5d0 EFLAGS: 00010246 [ 44.090645] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8800b699f350 [ 44.097880] RDX: 0000000000000000 RSI: ffffffff85193810 RDI: ffff8800b699f358 [ 44.105128] RBP: ffff8800b7c8f5e8 R08: 0000000000000001 R09: 0000000000000000 [ 44.112362] R10: 0000000000000001 R11: 1ffff10016f91e8a R12: 0000000000000000 [ 44.119595] R13: ffff8800b699f378 R14: 00000000ffffffde R15: ffff8800b699f2f9 [ 44.126830] FS: 00000000007d4880(0063) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 44.135018] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.140862] CR2: 000000002000ef86 CR3: 00000000b687a000 CR4: 00000000001406e0 [ 44.148099] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.155333] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.162574] Stack: [ 44.164682] 00000000ffffffde ffff8800b699f350 ffffffff846e9d40 ffff8800b7c8f600 [ 44.172627] ffffffff81d2912d ffff8800b699f350 ffff8800b7c8f620 ffffffff83270964 [ 44.180562] ffff8800b96a4980 ffff8800b699f350 ffff8800b7c8f640 ffffffff83291cce [ 44.188507] Call Trace: [ 44.191061] [<ffffffff81d2912d>] list_del+0xd/0x70 [ 44.196040] [<ffffffff83270964>] xfrm_state_walk_done+0x64/0x90 [ 44.202145] [<ffffffff83291cce>] xfrm_dump_sa_done+0x6e/0x90 [ 44.208000] [<ffffffff82f29154>] netlink_dump+0x7e4/0xb60 [ 44.213583] [<ffffffff82f2d8c6>] __netlink_dump_start+0x4e6/0x770 [ 44.219863] [<ffffffff82f25477>] ? __netlink_ns_capable+0xc7/0xf0 [ 44.226141] [<ffffffff832921e2>] xfrm_user_rcv_msg+0x4f2/0x730 [ 44.232160] [<ffffffff83291cf0>] ? xfrm_dump_sa_done+0x90/0x90 [ 44.238177] [<ffffffff8122b69f>] ? __lock_acquire+0xb5f/0x4b50 [ 44.244202] [<ffffffff83292420>] ? xfrm_user_rcv_msg+0x730/0x730 [ 44.250396] [<ffffffff83291c60>] ? xfrm_dump_policy_start+0x20/0x20 [ 44.256849] [<ffffffff81b14bb0>] ? avc_has_perm_noaudit+0x420/0x420 [ 44.263300] [<ffffffff81229f2f>] ? mark_held_locks+0xaf/0x100 [ 44.269234] [<ffffffff83741b14>] ? mutex_lock_nested+0x5d4/0x850 [ 44.275433] [<ffffffff8122a30b>] ? trace_hardirqs_on_caller+0x38b/0x590 [ 44.282232] [<ffffffff83741aa0>] ? mutex_lock_nested+0x560/0x850 [ 44.288425] [<ffffffff8328e46a>] ? xfrm_netlink_rcv+0x5a/0x90 [ 44.294354] [<ffffffff82f2ce4c>] ? netlink_lookup+0xdc/0x670 [ 44.300199] [<ffffffff83741540>] ? __ww_mutex_lock+0x14f0/0x14f0 [ 44.306390] [<ffffffff82f32f1f>] netlink_rcv_skb+0x11f/0x330 [ 44.312242] [<ffffffff82f31a4d>] ? netlink_unicast+0x3ed/0x760 [ 44.318260] [<ffffffff83291cf0>] ? xfrm_dump_sa_done+0x90/0x90 [ 44.324287] [<ffffffff8328e479>] xfrm_netlink_rcv+0x69/0x90 [ 44.330047] [<ffffffff82f31b25>] netlink_unicast+0x4c5/0x760 [ 44.335892] [<ffffffff82f31a4d>] ? netlink_unicast+0x3ed/0x760 [ 44.341909] [<ffffffff82f31660>] ? netlink_attachskb+0x810/0x810 [ 44.348195] [<ffffffff82f325f2>] netlink_sendmsg+0x832/0xbc0 [ 44.354038] [<ffffffff82f31dc0>] ? netlink_unicast+0x760/0x760 [ 44.360058] [<ffffffff8374a7ac>] ? _raw_spin_unlock+0x2c/0x50 [ 44.365991] [<ffffffff81b307fa>] ? selinux_socket_sendmsg+0x3a/0x50 [ 44.372451] [<ffffffff82f31dc0>] ? netlink_unicast+0x760/0x760 [ 44.378472] [<ffffffff82d946f5>] sock_sendmsg+0xb5/0xf0 [ 44.383881] [<ffffffff82d961cd>] ___sys_sendmsg+0x66d/0x7d0 [ 44.389639] [<ffffffff82d95b60>] ? copy_msghdr_from_user+0x590/0x590 [ 44.396178] [<ffffffff814e95a7>] ? do_huge_pmd_anonymous_page+0x487/0x980 [ 44.403151] [<ffffffff8374a7ac>] ? _raw_spin_unlock+0x2c/0x50 [ 44.409084] [<ffffffff814e95a7>] ? do_huge_pmd_anonymous_page+0x487/0x980 [ 44.416059] [<ffffffff812752e7>] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 44.422773] [<ffffffff8154fa6f>] ? __fget_light+0x12f/0x1b0 [ 44.428532] [<ffffffff8154fafe>] ? __fdget+0xe/0x10 [ 44.433596] [<ffffffff82d97f53>] __sys_sendmsg+0xc3/0x160 [ 44.439190] [<ffffffff82d97e90>] ? SyS_shutdown+0x190/0x190 [ 44.444948] [<ffffffff810d7bb0>] ? __do_page_fault+0x2f0/0x910 [ 44.450968] [<ffffffff81003017>] ? trace_hardirqs_on_thunk+0x17/0x19 [ 44.457507] [<ffffffff82d97ffd>] SyS_sendmsg+0xd/0x20 [ 44.462742] [<ffffffff8374b236>] entry_SYSCALL_64_fastpath+0x16/0x76 [ 44.469281] 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 [ 44.476854] RIP [<ffffffff81d28fd6>] __list_del_entry+0x86/0x1d0 [ 44.476860] RSP <ffff8800b7c8f5d0> [ 44.476888] ---[ end trace 14e87c899b6d7645 ]--- [ 44.476889] Kernel panic - not syncing: Fatal exception in interrupt [ 44.487721] Dumping ftrace buffer: [ 44.487724] (ftrace buffer empty) [ 44.487725] Kernel Offset: disabled [ 44.522470] Rebooting in 86400 seconds..