[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 24.002313] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.610877] random: sshd: uninitialized urandom read (32 bytes read) [ 26.972549] random: sshd: uninitialized urandom read (32 bytes read) [ 27.522307] random: sshd: uninitialized urandom read (32 bytes read) [ 27.699955] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts. [ 33.342827] random: sshd: uninitialized urandom read (32 bytes read) [ 33.464667] IPVS: ftp: loaded support on port[0] = 21 [ 33.465619] IPVS: ftp: loaded support on port[0] = 21 [ 33.471814] IPVS: ftp: loaded support on port[0] = 21 [ 33.476660] IPVS: ftp: loaded support on port[0] = 21 [ 33.483799] IPVS: ftp: loaded support on port[0] = 21 [ 33.488405] IPVS: ftp: loaded support on port[0] = 21 [ 33.491444] IPVS: ftp: loaded support on port[0] = 21 [ 33.496747] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.816952] kasan: CONFIG_KASAN_INLINE enabled [ 35.821701] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.829075] general protection fault: 0000 [#1] SMP KASAN [ 35.834622] CPU: 0 PID: 5458 Comm: syz-executor877 Not tainted 4.18.0+ #203 [ 35.842184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.851572] RIP: 0010:get_work_pool+0x19f/0x260 [ 35.856262] Code: 48 83 c4 60 5b 41 5c 41 5d 41 5e 5d c3 e8 a9 7a 2d 00 48 81 e3 00 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 9e 00 00 00 48 8b 1b eb 99 e8 7d 7a 2d 00 e8 08 [ 35.875171] RSP: 0018:ffff8801ae266f40 EFLAGS: 00010006 [ 35.880558] RAX: dffffc0000000000 RBX: 00000000fffffe00 RCX: ffffffff814f49aa [ 35.887823] RDX: 000000001fffffc0 RSI: ffffffff814f4a27 RDI: 0000000000000007 [ 35.895085] RBP: ffff8801ae266fc0 R08: ffff8801d7bfe080 R09: ffffed003b6046d6 [ 35.902358] R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 0000000000000004 [ 35.909629] R13: 1ffff10035c4cde8 R14: ffff8801ae266fa0 R15: 0000000000000000 [ 35.916898] FS: 00000000019e7880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 35.925127] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.931013] CR2: 0000000020000300 CR3: 00000001add0a000 CR4: 00000000001406f0 [ 35.938286] Call Trace: [ 35.940886] ? destroy_delayed_work_on_stack+0x30/0x30 [ 35.946175] ? mod_timer+0x5f4/0x1340 [ 35.949987] __queue_work+0x319/0x12f0 [ 35.953871] ? print_usage_bug+0xc0/0xc0 [ 35.957925] ? graph_lock+0x170/0x170 [ 35.961739] ? flush_rcu_work+0x90/0x90 [ 35.965721] ? kasan_check_read+0x11/0x20 [ 35.969881] ? rcu_is_watching+0x8c/0x150 [ 35.974031] ? mark_held_locks+0xc9/0x160 [ 35.978187] ? __local_bh_enable_ip+0x161/0x230 [ 35.982884] ? __local_bh_enable_ip+0x161/0x230 [ 35.987562] ? trace_hardirqs_off+0xb8/0x2b0 [ 35.991985] ? xfrm_policy_insert+0xe66/0x16d0 [ 35.996574] ? trace_hardirqs_on+0x2c0/0x2c0 [ 36.000995] ? do_raw_spin_unlock+0xa7/0x2f0 [ 36.005413] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.010014] ? xfrm_policy_hash_rebuild+0x60/0x60 [ 36.014902] queue_work_on+0x19a/0x1e0 [ 36.018803] xfrm_policy_insert+0xe66/0x16d0 [ 36.023229] ? policy_hash_bysel+0xe70/0xe70 [ 36.027651] ? lock_acquire+0x1e4/0x4f0 [ 36.031625] ? xfrm_netlink_rcv+0x60/0x90 [ 36.035772] ? memcpy+0x45/0x50 [ 36.039062] ? copy_from_user_policy+0x110/0x2b0 [ 36.043852] ? xfrm_policy_construct+0x470/0x650 [ 36.048744] xfrm_add_policy+0x2c8/0x750 [ 36.052849] ? xfrm_policy_construct+0x650/0x650 [ 36.057617] ? validate_nla+0x7b0/0x7b0 [ 36.061611] ? ns_capable+0x22/0x30 [ 36.065250] ? __netlink_ns_capable+0x100/0x130 [ 36.069950] ? xfrm_policy_construct+0x650/0x650 [ 36.074724] xfrm_user_rcv_msg+0x455/0x8b0 [ 36.078970] ? xfrm_dump_sa_done+0xf0/0xf0 [ 36.083224] ? lock_downgrade+0x8f0/0x8f0 [ 36.087382] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 36.092410] netlink_rcv_skb+0x172/0x440 [ 36.096467] ? xfrm_dump_sa_done+0xf0/0xf0 [ 36.100714] ? netlink_ack+0xbe0/0xbe0 [ 36.104630] xfrm_netlink_rcv+0x6f/0x90 [ 36.108606] netlink_unicast+0x5a0/0x760 [ 36.112667] ? netlink_attachskb+0x9a0/0x9a0 [ 36.117092] netlink_sendmsg+0xa18/0xfc0 [ 36.121152] ? netlink_unicast+0x760/0x760 [ 36.125388] ? move_addr_to_kernel.part.18+0x100/0x100 [ 36.130677] ? security_socket_sendmsg+0x94/0xc0 [ 36.135425] ? netlink_unicast+0x760/0x760 [ 36.139668] sock_sendmsg+0xd5/0x120 [ 36.143655] ___sys_sendmsg+0x7fd/0x930 [ 36.147653] ? copy_msghdr_from_user+0x580/0x580 [ 36.152417] ? lock_downgrade+0x8f0/0x8f0 [ 36.156579] ? lock_release+0x9f0/0x9f0 [ 36.160566] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.166102] ? __fget_light+0x2f7/0x440 [ 36.170074] ? fget_raw+0x20/0x20 [ 36.173573] ? kasan_check_read+0x11/0x20 [ 36.177721] ? _copy_to_user+0xc8/0x110 [ 36.181695] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.187238] ? move_addr_to_user+0xc9/0x200 [ 36.191582] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.197131] ? sockfd_lookup_light+0xc5/0x160 [ 36.201640] __sys_sendmsg+0x11d/0x290 [ 36.205561] ? __ia32_sys_shutdown+0x80/0x80 [ 36.209993] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.215562] ? __do_page_fault+0x449/0xe50 [ 36.219822] ? do_syscall_64+0x9a/0x820 [ 36.223833] ? do_syscall_64+0x9a/0x820 [ 36.227817] ? trace_hardirqs_off_caller+0x2b0/0x2b0 [ 36.232944] __x64_sys_sendmsg+0x78/0xb0 [ 36.237013] do_syscall_64+0x1b9/0x820 [ 36.240908] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.246282] ? syscall_return_slowpath+0x5e0/0x5e0 [ 36.251218] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.256103] ? trace_hardirqs_on_caller+0x2b0/0x2b0 [ 36.261144] ? prepare_exit_to_usermode+0x291/0x3b0 [ 36.266171] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.271033] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.276231] RIP: 0033:0x441409 [ 36.279439] Code: e8 6c e8 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 cb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 36.298345] RSP: 002b:00007ffdb319a658 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 36.306061] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441409 [ 36.313343] RDX: 000000000000c800 RSI: 0000000020000500 RDI: 0000000000000003 [ 36.320651] RBP: 0000000000008bbe R08: 0000000000000000 R09: 0000000000000000 [ 36.327922] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000000000 [ 36.335196] R13: 00000000004022f0 R14: 0000000000000000 R15: 0000000000000000 [ 36.342471] Modules linked in: [ 36.345670] Dumping ftrace buffer: [ 36.349217] (ftrace buffer empty) [ 36.352950] ---[ end trace 7d56894d5132b2c0 ]--- [ 36.357716] RIP: 0010:get_work_pool+0x19f/0x260 [ 36.362394] Code: 48 83 c4 60 5b 41 5c 41 5d 41 5e 5d c3 e8 a9 7a 2d 00 48 81 e3 00 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 9e 00 00 00 48 8b 1b eb 99 e8 7d 7a 2d 00 e8 08 [ 36.381298] RSP: 0018:ffff8801ae266f40 EFLAGS: 00010006 [ 36.386666] RAX: dffffc0000000000 RBX: 00000000fffffe00 RCX: ffffffff814f49aa [ 36.393978] RDX: 000000001fffffc0 RSI: ffffffff814f4a27 RDI: 0000000000000007 [ 36.401251] RBP: ffff8801ae266fc0 R08: ffff8801d7bfe080 R09: ffffed003b6046d6 [ 36.408540] R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 0000000000000004 [ 36.415813] R13: 1ffff10035c4cde8 R14: ffff8801ae266fa0 R15: 0000000000000000 [ 36.423111] FS: 00000000019e7880(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 [ 36.431338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.437222] CR2: 0000000020000300 CR3: 00000001add0a000 CR4: 00000000001406f0 [ 36.444535] Kernel panic - not syncing: Fatal exception [ 36.450229] Dumping ftrace buffer: [ 36.453758] (ftrace buffer empty) [ 36.457450] Kernel Offset: disabled [ 36.461065] Rebooting in 86400 seconds..