[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.946025] audit: type=1800 audit(1547102684.705:25): pid=7780 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.986124] audit: type=1800 audit(1547102684.715:26): pid=7780 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.006089] audit: type=1800 audit(1547102684.715:27): pid=7780 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.126' (ECDSA) to the list of known hosts. syzkaller login: [ 48.014880] IPVS: ftp: loaded support on port[0] = 21 [ 48.015548] IPVS: ftp: loaded support on port[0] = 21 [ 48.033190] IPVS: ftp: loaded support on port[0] = 21 [ 48.036294] IPVS: ftp: loaded support on port[0] = 21 [ 48.042530] IPVS: ftp: loaded support on port[0] = 21 [ 48.045078] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.109280] ================================================================== [ 56.116803] BUG: KASAN: use-after-free in __xfrm_policy_unlink+0x9ec/0xa00 [ 56.123834] Write of size 8 at addr ffff888088e96dd0 by task syz-executor611/10179 [ 56.131555] [ 56.133189] CPU: 0 PID: 10179 Comm: syz-executor611 Not tainted 5.0.0-rc1+ #17 [ 56.140550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.149900] Call Trace: [ 56.152496] dump_stack+0x1db/0x2d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.156172] ? dump_stack_print_info.cold+0x20/0x20 [ 56.161202] ? find_held_lock+0x35/0x120 [ 56.165275] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.169956] print_address_description.cold+0x7c/0x20d [ 56.175238] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.179911] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.184588] kasan_report.cold+0x1b/0x40 [ 56.188657] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.193337] __asan_report_store8_noabort+0x17/0x20 [ 56.198362] __xfrm_policy_unlink+0x9ec/0xa00 [ 56.202869] ? xfrm_policy_walk_done+0x360/0x360 executing program executing program executing program executing program executing program executing program executing program executing program [ 56.207634] ? __fib6_clean_all+0x300/0x430 [ 56.211966] ? xfrm_policy_byid+0x4a0/0x4a0 [ 56.216325] ? fib6_clean_tree+0x340/0x340 [ 56.220583] ? ipv6_route_yield+0x220/0x220 [ 56.224911] ? xfrm_pol_inexact_addr_use_any_list+0x1f0/0x1f0 [ 56.230823] xfrm_policy_insert+0x223/0x910 [ 56.235170] ? __fib6_clean_all+0x430/0x430 [ 56.239533] ? xfrm_policy_inexact_insert+0xda0/0xda0 [ 56.244740] ? copy_from_user_policy+0x110/0x2b0 [ 56.249530] ? xfrm_policy_construct+0x471/0x660 [ 56.254302] xfrm_add_policy+0x2a1/0x6c0 executing program executing program executing program executing program executing program executing program [ 56.258374] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.263923] ? xfrm_policy_construct+0x660/0x660 [ 56.268692] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.274278] ? __nla_parse+0x12a/0x340 [ 56.278183] ? nla_parse+0x45/0x60 [ 56.281748] ? xfrm_policy_construct+0x660/0x660 [ 56.286537] xfrm_user_rcv_msg+0x458/0x8d0 [ 56.290803] ? xfrm_dump_sa_done+0xf0/0xf0 [ 56.295044] ? xfrm_netlink_rcv+0x61/0x90 [ 56.299211] ? __mutex_lock+0x622/0x1670 [ 56.303319] netlink_rcv_skb+0x17d/0x410 executing program executing program executing program executing program executing program executing program executing program executing program [ 56.307389] ? xfrm_dump_sa_done+0xf0/0xf0 [ 56.311636] ? netlink_ack+0xba0/0xba0 [ 56.315560] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 56.320875] xfrm_netlink_rcv+0x70/0x90 [ 56.324866] netlink_unicast+0x574/0x770 [ 56.328945] ? netlink_attachskb+0x980/0x980 [ 56.333365] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.338911] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 56.343943] netlink_sendmsg+0xa05/0xf90 [ 56.348014] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.353604] ? netlink_unicast+0x770/0x770 executing program executing program executing program executing program executing program executing program executing program executing program [ 56.357862] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 56.362720] ? apparmor_socket_sendmsg+0x2a/0x30 [ 56.367498] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.373064] ? security_socket_sendmsg+0x93/0xc0 [ 56.377832] ? netlink_unicast+0x770/0x770 [ 56.382096] sock_sendmsg+0xdd/0x130 [ 56.385821] ___sys_sendmsg+0x7ec/0x910 [ 56.389814] ? copy_msghdr_from_user+0x570/0x570 [ 56.394714] ? find_held_lock+0x35/0x120 [ 56.398804] ? __fd_install+0x2a0/0x8c0 [ 56.402788] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 executing program executing program executing program executing program executing program executing program executing program [ 56.408337] ? lock_downgrade+0x910/0x910 [ 56.412538] ? kasan_check_read+0x11/0x20 [ 56.416700] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.422246] ? __fget_light+0x2db/0x420 [ 56.426235] ? fget_raw+0x20/0x20 [ 56.429706] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.435259] ? __fdget+0x1b/0x20 [ 56.438653] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.444210] ? sockfd_lookup_light+0xc2/0x160 [ 56.448733] __sys_sendmsg+0x112/0x270 [ 56.452629] ? __ia32_sys_shutdown+0x80/0x80 executing program executing program executing program executing program executing program executing program executing program [ 56.457076] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.462449] ? trace_hardirqs_off_caller+0x300/0x300 [ 56.467570] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.472348] __x64_sys_sendmsg+0x78/0xb0 [ 56.476421] do_syscall_64+0x1a3/0x800 [ 56.480320] ? syscall_return_slowpath+0x5f0/0x5f0 [ 56.485277] ? prepare_exit_to_usermode+0x232/0x3b0 [ 56.490796] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 56.495654] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.500849] RIP: 0033:0x443149 executing program executing program executing program executing program executing program executing program executing program executing program [ 56.504053] 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 [ 56.522956] RSP: 002b:00007ffc242d84d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.530684] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443149 [ 56.537969] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000004 [ 56.545242] RBP: 000000000000dae2 R08: 000000000000dae2 R09: 000000000000dae2 [ 56.552559] R10: 000000000000dae2 R11: 0000000000000246 R12: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program [ 56.559865] R13: 0000000000404030 R14: 00000000006cf440 R15: 0000000000000000 [ 56.567240] [ 56.568873] Allocated by task 10162: [ 56.572593] save_stack+0x45/0xd0 [ 56.576052] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 56.581006] kasan_kmalloc+0x9/0x10 [ 56.585370] kmem_cache_alloc_trace+0x151/0x760 [ 56.590051] xfrm_policy_alloc+0xfb/0x530 [ 56.594202] xfrm_policy_construct+0x30/0x660 [ 56.598702] xfrm_add_policy+0x20a/0x6c0 [ 56.602785] xfrm_user_rcv_msg+0x458/0x8d0 [ 56.607027] netlink_rcv_skb+0x17d/0x410 executing program executing program executing program executing program executing program executing program executing program executing program [ 56.611104] xfrm_netlink_rcv+0x70/0x90 [ 56.615083] netlink_unicast+0x574/0x770 [ 56.619242] netlink_sendmsg+0xa05/0xf90 [ 56.623481] sock_sendmsg+0xdd/0x130 [ 56.627218] ___sys_sendmsg+0x7ec/0x910 [ 56.631240] __sys_sendmsg+0x112/0x270 [ 56.635140] __x64_sys_sendmsg+0x78/0xb0 [ 56.639207] do_syscall_64+0x1a3/0x800 [ 56.643102] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.648289] [ 56.649928] Freed by task 9: [ 56.652949] save_stack+0x45/0xd0 [ 56.656408] __kasan_slab_free+0x102/0x150 executing program executing program executing program executing program executing program executing program executing program [ 56.660657] kasan_slab_free+0xe/0x10 [ 56.664461] kfree+0xcf/0x230 [ 56.667618] xfrm_policy_destroy_rcu+0x48/0x60 [ 56.672208] rcu_process_callbacks+0xc4a/0x1680 [ 56.676887] __do_softirq+0x30b/0xb11 [ 56.680686] [ 56.682324] The buggy address belongs to the object at ffff888088e96dc0 [ 56.682324] which belongs to the cache kmalloc-1k of size 1024 [ 56.694989] The buggy address is located 16 bytes inside of [ 56.694989] 1024-byte region [ffff888088e96dc0, ffff888088e971c0) [ 56.706857] The buggy address belongs to the page: executing program executing program executing program executing program executing program executing program executing program [ 56.711793] page:ffffea000223a580 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0x0 compound_mapcount: 0 [ 56.721773] flags: 0x1fffc0000010200(slab|head) [ 56.726450] raw: 01fffc0000010200 ffffea000268d208 ffffea0002624588 ffff88812c3f0ac0 [ 56.734339] raw: 0000000000000000 ffff888088e96040 0000000100000007 0000000000000000 [ 56.742231] page dumped because: kasan: bad access detected [ 56.747954] [ 56.749596] Memory state around the buggy address: [ 56.754546] ffff888088e96c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb executing program executing program executing program executing program executing program executing program executing program executing program [ 56.761912] ffff888088e96d00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 56.769315] >ffff888088e96d80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 56.776675] ^ [ 56.782656] ffff888088e96e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 56.790018] ffff888088e96e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 56.797372] ================================================================== [ 56.804729] Disabling lock debugging due to kernel taint executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.810224] Kernel panic - not syncing: panic_on_warn set ... [ 56.816129] CPU: 0 PID: 10179 Comm: syz-executor611 Tainted: G B 5.0.0-rc1+ #17 [ 56.824874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.834219] Call Trace: [ 56.836814] dump_stack+0x1db/0x2d0 [ 56.840448] ? dump_stack_print_info.cold+0x20/0x20 [ 56.845472] panic+0x2cb/0x65c [ 56.848691] ? add_taint.cold+0x16/0x16 [ 56.852674] ? trace_hardirqs_on+0xb4/0x310 [ 56.856997] ? trace_hardirqs_on+0xb4/0x310 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.861329] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.866003] end_report+0x47/0x4f [ 56.869464] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.874157] kasan_report.cold+0xe/0x40 [ 56.878199] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 56.882919] __asan_report_store8_noabort+0x17/0x20 [ 56.887938] __xfrm_policy_unlink+0x9ec/0xa00 [ 56.892438] ? xfrm_policy_walk_done+0x360/0x360 [ 56.897197] ? __fib6_clean_all+0x300/0x430 [ 56.901549] ? xfrm_policy_byid+0x4a0/0x4a0 [ 56.905886] ? fib6_clean_tree+0x340/0x340 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.910123] ? ipv6_route_yield+0x220/0x220 [ 56.914449] ? xfrm_pol_inexact_addr_use_any_list+0x1f0/0x1f0 [ 56.920360] xfrm_policy_insert+0x223/0x910 [ 56.924695] ? __fib6_clean_all+0x430/0x430 [ 56.929038] ? xfrm_policy_inexact_insert+0xda0/0xda0 [ 56.934241] ? copy_from_user_policy+0x110/0x2b0 [ 56.939003] ? xfrm_policy_construct+0x471/0x660 [ 56.943770] xfrm_add_policy+0x2a1/0x6c0 [ 56.947849] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.953392] ? xfrm_policy_construct+0x660/0x660 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.958157] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.963728] ? __nla_parse+0x12a/0x340 [ 56.967673] ? nla_parse+0x45/0x60 [ 56.971246] ? xfrm_policy_construct+0x660/0x660 [ 56.976010] xfrm_user_rcv_msg+0x458/0x8d0 [ 56.980252] ? xfrm_dump_sa_done+0xf0/0xf0 [ 56.984492] ? xfrm_netlink_rcv+0x61/0x90 [ 56.988678] ? __mutex_lock+0x622/0x1670 [ 56.992767] netlink_rcv_skb+0x17d/0x410 [ 56.996857] ? xfrm_dump_sa_done+0xf0/0xf0 [ 57.001126] ? netlink_ack+0xba0/0xba0 [ 57.005022] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.010325] xfrm_netlink_rcv+0x70/0x90 [ 57.014303] netlink_unicast+0x574/0x770 [ 57.018385] ? netlink_attachskb+0x980/0x980 [ 57.022826] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.028385] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 57.033409] netlink_sendmsg+0xa05/0xf90 [ 57.037469] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.043022] ? netlink_unicast+0x770/0x770 [ 57.047274] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 57.052120] ? apparmor_socket_sendmsg+0x2a/0x30 [ 57.056883] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.062437] ? security_socket_sendmsg+0x93/0xc0 [ 57.067195] ? netlink_unicast+0x770/0x770 [ 57.071438] sock_sendmsg+0xdd/0x130 [ 57.075171] ___sys_sendmsg+0x7ec/0x910 [ 57.079165] ? copy_msghdr_from_user+0x570/0x570 [ 57.083926] ? find_held_lock+0x35/0x120 [ 57.087990] ? __fd_install+0x2a0/0x8c0 [ 57.091971] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.097564] ? lock_downgrade+0x910/0x910 [ 57.101721] ? kasan_check_read+0x11/0x20 [ 57.105875] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.111417] ? __fget_light+0x2db/0x420 [ 57.115394] ? fget_raw+0x20/0x20 [ 57.118854] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.124412] ? __fdget+0x1b/0x20 [ 57.127782] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.133328] ? sockfd_lookup_light+0xc2/0x160 [ 57.137834] __sys_sendmsg+0x112/0x270 [ 57.141731] ? __ia32_sys_shutdown+0x80/0x80 [ 57.146162] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.151555] ? trace_hardirqs_off_caller+0x300/0x300 [ 57.156671] ? trace_hardirqs_on_thunk+0x1a/0x1c executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 57.161443] __x64_sys_sendmsg+0x78/0xb0 [ 57.165557] do_syscall_64+0x1a3/0x800 [ 57.169455] ? syscall_return_slowpath+0x5f0/0x5f0 [ 57.174396] ? prepare_exit_to_usermode+0x232/0x3b0 [ 57.179426] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.184301] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.189493] RIP: 0033:0x443149 [ 57.192721] 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 executing program executing program executing program executing program executing program executing program executing program executing program [ 57.211626] RSP: 002b:00007ffc242d84d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.219344] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443149 [ 57.226618] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000004 [ 57.233908] RBP: 000000000000dae2 R08: 000000000000dae2 R09: 000000000000dae2 [ 57.241197] R10: 000000000000dae2 R11: 0000000000000246 R12: 0000000000000000 [ 57.248468] R13: 0000000000404030 R14: 00000000006cf440 R15: 0000000000000000 [ 57.256727] Kernel Offset: disabled [ 57.260350] Rebooting in 86400 seconds..