[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 52.717821] kauditd_printk_skb: 4 callbacks suppressed [ 52.717835] audit: type=1400 audit(1547494362.252:35): avc: denied { map } for pid=8348 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts. [ 59.701757] audit: type=1400 audit(1547494369.232:36): avc: denied { map } for pid=8360 comm="syz-executor072" path="/root/syz-executor072287123" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 59.746841] IPVS: ftp: loaded support on port[0] = 21 [ 59.811840] chnl_net:caif_netlink_parms(): no params data found [ 59.846211] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.852807] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.860226] device bridge_slave_0 entered promiscuous mode [ 59.868305] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.874839] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.881785] device bridge_slave_1 entered promiscuous mode [ 59.898787] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 59.908060] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 59.924754] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 59.932282] team0: Port device team_slave_0 added [ 59.937913] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 59.944985] team0: Port device team_slave_1 added [ 59.950165] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 59.957584] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 60.025303] device hsr_slave_0 entered promiscuous mode [ 60.083787] device hsr_slave_1 entered promiscuous mode [ 60.144011] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 60.150892] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 60.165622] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.172023] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.178909] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.185279] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.216967] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 60.223015] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.232209] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.240779] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.260050] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.267681] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.275744] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 60.286798] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 60.292908] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.301949] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.310010] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.316394] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.326327] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.334062] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.340375] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.354583] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.362548] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.372106] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.385613] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 60.396231] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.406959] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 60.413914] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.421391] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.429566] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.441402] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 60.451607] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program [ 60.461484] audit: type=1400 audit(1547494369.992:37): avc: denied { associate } for pid=8361 comm="syz-executor072" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 70.993695] ================================================================== [ 71.001195] BUG: KASAN: use-after-free in __xfrm_policy_unlink+0x9ec/0xa00 [ 71.008211] Write of size 8 at addr ffff88808ddabb50 by task syz-executor072/9772 [ 71.015806] [ 71.017435] CPU: 1 PID: 9772 Comm: syz-executor072 Not tainted 5.0.0-rc2 #25 [ 71.024616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.033949] Call Trace: [ 71.036525] dump_stack+0x1db/0x2d0 [ 71.040138] ? dump_stack_print_info.cold+0x20/0x20 [ 71.045138] ? find_held_lock+0x35/0x120 [ 71.049186] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.053850] print_address_description.cold+0x7c/0x20d [ 71.059122] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.063771] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.068434] kasan_report.cold+0x1b/0x40 [ 71.072489] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.077145] __asan_report_store8_noabort+0x17/0x20 [ 71.082146] __xfrm_policy_unlink+0x9ec/0xa00 [ 71.086639] ? xfrm_policy_walk_done+0x360/0x360 [ 71.091383] ? __fib6_clean_all+0x300/0x430 [ 71.095691] ? xfrm_policy_byid+0x4a0/0x4a0 [ 71.099999] ? fib6_clean_tree+0x340/0x340 [ 71.104244] ? ipv6_route_yield+0x220/0x220 [ 71.108561] ? xfrm_pol_inexact_addr_use_any_list+0x1f0/0x1f0 [ 71.114534] xfrm_policy_insert+0x223/0x910 [ 71.118866] ? __fib6_clean_all+0x430/0x430 [ 71.123192] ? xfrm_policy_inexact_insert+0xda0/0xda0 [ 71.128376] ? copy_from_user_policy+0x110/0x2b0 [ 71.133120] ? xfrm_policy_construct+0x471/0x660 [ 71.137882] xfrm_add_policy+0x2a1/0x6c0 [ 71.141935] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.147457] ? xfrm_policy_construct+0x660/0x660 [ 71.152198] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.157735] ? __nla_parse+0x12a/0x340 [ 71.161651] ? nla_parse+0x45/0x60 [ 71.165177] ? xfrm_policy_construct+0x660/0x660 [ 71.169944] xfrm_user_rcv_msg+0x458/0x8d0 [ 71.174189] ? xfrm_dump_sa_done+0xf0/0xf0 [ 71.178411] ? xfrm_netlink_rcv+0x61/0x90 [ 71.182557] ? __mutex_lock+0x622/0x1670 [ 71.186637] netlink_rcv_skb+0x17d/0x410 [ 71.190682] ? xfrm_dump_sa_done+0xf0/0xf0 [ 71.194906] ? netlink_ack+0xba0/0xba0 [ 71.198792] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 71.204060] xfrm_netlink_rcv+0x70/0x90 [ 71.208023] netlink_unicast+0x574/0x770 [ 71.212070] ? netlink_attachskb+0x980/0x980 [ 71.216482] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.222031] netlink_sendmsg+0xa05/0xf90 [ 71.226104] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.231671] ? netlink_unicast+0x770/0x770 [ 71.235906] ? selinux_socket_sendmsg+0x36/0x40 [ 71.240566] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.246112] ? security_socket_sendmsg+0x93/0xc0 [ 71.250881] ? netlink_unicast+0x770/0x770 [ 71.255142] sock_sendmsg+0xdd/0x130 [ 71.258850] ___sys_sendmsg+0x7ec/0x910 [ 71.262817] ? copy_msghdr_from_user+0x570/0x570 [ 71.267555] ? find_held_lock+0x35/0x120 [ 71.271604] ? __fd_install+0x2a0/0x8c0 [ 71.275566] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.281087] ? lock_downgrade+0x910/0x910 [ 71.285234] ? kasan_check_read+0x11/0x20 [ 71.289402] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.294935] ? __fget_light+0x2db/0x420 [ 71.298906] ? fget_raw+0x20/0x20 [ 71.302344] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.307881] ? __fdget+0x1b/0x20 [ 71.311229] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.316748] ? sockfd_lookup_light+0xc2/0x160 [ 71.321248] __sys_sendmsg+0x112/0x270 [ 71.325137] ? __ia32_sys_shutdown+0x80/0x80 [ 71.329558] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.334904] ? trace_hardirqs_off_caller+0x300/0x300 [ 71.340005] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 71.344758] __x64_sys_sendmsg+0x78/0xb0 [ 71.348807] do_syscall_64+0x1a3/0x800 [ 71.352699] ? syscall_return_slowpath+0x5f0/0x5f0 [ 71.357616] ? prepare_exit_to_usermode+0x232/0x3b0 [ 71.362617] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 71.367446] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.372638] RIP: 0033:0x444d99 [ 71.375822] Code: e8 bc 0a 03 00 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 71.394727] RSP: 002b:00007ffcd525a868 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 71.402424] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444d99 [ 71.409687] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000004 [ 71.416952] RBP: 0000000000000000 R08: 000000000000057f R09: 000000000000057f [ 71.424202] R10: 000000000000057f R11: 0000000000000246 R12: 000000000000057f [ 71.431456] R13: 0000000000011523 R14: 00007ffcd525ab70 R15: 000000aaaaaaaaaa [ 71.438713] [ 71.440325] Allocated by task 9770: [ 71.443946] save_stack+0x45/0xd0 [ 71.447418] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 71.452485] kasan_kmalloc+0x9/0x10 [ 71.456096] kmem_cache_alloc_trace+0x151/0x760 [ 71.460746] xfrm_policy_alloc+0xfb/0x530 [ 71.464897] xfrm_policy_construct+0x30/0x660 [ 71.469381] xfrm_add_policy+0x20a/0x6c0 [ 71.473425] xfrm_user_rcv_msg+0x458/0x8d0 [ 71.477649] netlink_rcv_skb+0x17d/0x410 [ 71.481694] xfrm_netlink_rcv+0x70/0x90 [ 71.485681] netlink_unicast+0x574/0x770 [ 71.489726] netlink_sendmsg+0xa05/0xf90 [ 71.493785] sock_sendmsg+0xdd/0x130 [ 71.497488] ___sys_sendmsg+0x7ec/0x910 [ 71.501454] __sys_sendmsg+0x112/0x270 [ 71.505321] __x64_sys_sendmsg+0x78/0xb0 [ 71.509375] do_syscall_64+0x1a3/0x800 [ 71.513293] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.518499] [ 71.520108] Freed by task 9: [ 71.523112] save_stack+0x45/0xd0 [ 71.526549] __kasan_slab_free+0x102/0x150 [ 71.530811] kasan_slab_free+0xe/0x10 [ 71.534783] kfree+0xcf/0x230 [ 71.537876] xfrm_policy_destroy_rcu+0x48/0x60 [ 71.542462] rcu_process_callbacks+0xc4a/0x1680 [ 71.547112] __do_softirq+0x30b/0xb11 [ 71.550910] [ 71.552693] The buggy address belongs to the object at ffff88808ddabb40 [ 71.552693] which belongs to the cache kmalloc-1k of size 1024 [ 71.565357] The buggy address is located 16 bytes inside of [ 71.565357] 1024-byte region [ffff88808ddabb40, ffff88808ddabf40) [ 71.577209] The buggy address belongs to the page: [ 71.582139] page:ffffea0002376a80 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0x0 compound_mapcount: 0 [ 71.592212] flags: 0x1fffc0000010200(slab|head) [ 71.596887] raw: 01fffc0000010200 ffffea0002471188 ffffea000237fe08 ffff88812c3f0ac0 [ 71.604779] raw: 0000000000000000 ffff88808ddaa040 0000000100000007 0000000000000000 [ 71.612636] page dumped because: kasan: bad access detected [ 71.618321] [ 71.619933] Memory state around the buggy address: [ 71.624856] ffff88808ddaba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 71.632217] ffff88808ddaba80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 71.639556] >ffff88808ddabb00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 71.646905] ^ [ 71.652856] ffff88808ddabb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 71.660211] ffff88808ddabc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 71.667604] ================================================================== [ 71.674966] Disabling lock debugging due to kernel taint [ 71.680471] Kernel panic - not syncing: panic_on_warn set ... [ 71.686367] CPU: 1 PID: 9772 Comm: syz-executor072 Tainted: G B 5.0.0-rc2 #25 [ 71.694923] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.704258] Call Trace: [ 71.706851] dump_stack+0x1db/0x2d0 [ 71.710473] ? dump_stack_print_info.cold+0x20/0x20 [ 71.715477] panic+0x2cb/0x65c [ 71.718698] ? add_taint.cold+0x16/0x16 [ 71.722673] ? trace_hardirqs_on+0xb4/0x310 [ 71.726980] ? trace_hardirqs_on+0xb4/0x310 [ 71.731317] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.735969] end_report+0x47/0x4f [ 71.739404] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.744054] kasan_report.cold+0xe/0x40 [ 71.748008] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 71.752658] __asan_report_store8_noabort+0x17/0x20 [ 71.757655] __xfrm_policy_unlink+0x9ec/0xa00 [ 71.762151] ? xfrm_policy_walk_done+0x360/0x360 [ 71.766905] ? __fib6_clean_all+0x300/0x430 [ 71.771207] ? xfrm_policy_byid+0x4a0/0x4a0 [ 71.775540] ? fib6_clean_tree+0x340/0x340 [ 71.779798] ? ipv6_route_yield+0x220/0x220 [ 71.784101] ? xfrm_pol_inexact_addr_use_any_list+0x1f0/0x1f0 [ 71.789967] xfrm_policy_insert+0x223/0x910 [ 71.794308] ? __fib6_clean_all+0x430/0x430 [ 71.798642] ? xfrm_policy_inexact_insert+0xda0/0xda0 [ 71.803943] ? copy_from_user_policy+0x110/0x2b0 [ 71.808693] ? xfrm_policy_construct+0x471/0x660 [ 71.813448] xfrm_add_policy+0x2a1/0x6c0 [ 71.817514] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.823062] ? xfrm_policy_construct+0x660/0x660 [ 71.827805] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.833322] ? __nla_parse+0x12a/0x340 [ 71.837192] ? nla_parse+0x45/0x60 [ 71.840729] ? xfrm_policy_construct+0x660/0x660 [ 71.845467] xfrm_user_rcv_msg+0x458/0x8d0 [ 71.849686] ? xfrm_dump_sa_done+0xf0/0xf0 [ 71.853929] ? xfrm_netlink_rcv+0x61/0x90 [ 71.858093] ? __mutex_lock+0x622/0x1670 [ 71.862151] netlink_rcv_skb+0x17d/0x410 [ 71.866195] ? xfrm_dump_sa_done+0xf0/0xf0 [ 71.870412] ? netlink_ack+0xba0/0xba0 [ 71.874289] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 71.879564] xfrm_netlink_rcv+0x70/0x90 [ 71.883562] netlink_unicast+0x574/0x770 [ 71.887629] ? netlink_attachskb+0x980/0x980 [ 71.892034] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.897573] netlink_sendmsg+0xa05/0xf90 [ 71.901659] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.907178] ? netlink_unicast+0x770/0x770 [ 71.911412] ? selinux_socket_sendmsg+0x36/0x40 [ 71.916081] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.921614] ? security_socket_sendmsg+0x93/0xc0 [ 71.926362] ? netlink_unicast+0x770/0x770 [ 71.930598] sock_sendmsg+0xdd/0x130 [ 71.934340] ___sys_sendmsg+0x7ec/0x910 [ 71.938311] ? copy_msghdr_from_user+0x570/0x570 [ 71.943084] ? find_held_lock+0x35/0x120 [ 71.947141] ? __fd_install+0x2a0/0x8c0 [ 71.951106] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.956628] ? lock_downgrade+0x910/0x910 [ 71.960771] ? kasan_check_read+0x11/0x20 [ 71.964902] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.970433] ? __fget_light+0x2db/0x420 [ 71.974391] ? fget_raw+0x20/0x20 [ 71.977830] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 71.983357] ? __fdget+0x1b/0x20 [ 71.986818] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 71.992365] ? sockfd_lookup_light+0xc2/0x160 [ 71.996845] __sys_sendmsg+0x112/0x270 [ 72.000722] ? __ia32_sys_shutdown+0x80/0x80 [ 72.005116] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.010486] ? trace_hardirqs_off_caller+0x300/0x300 [ 72.015597] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 72.020333] __x64_sys_sendmsg+0x78/0xb0 [ 72.024387] do_syscall_64+0x1a3/0x800 [ 72.028255] ? syscall_return_slowpath+0x5f0/0x5f0 [ 72.033188] ? prepare_exit_to_usermode+0x232/0x3b0 [ 72.038200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 72.043060] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.048239] RIP: 0033:0x444d99 [ 72.051450] Code: e8 bc 0a 03 00 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 72.070328] RSP: 002b:00007ffcd525a868 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.078022] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444d99 [ 72.085271] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000004 [ 72.092518] RBP: 0000000000000000 R08: 000000000000057f R09: 000000000000057f [ 72.099771] R10: 000000000000057f R11: 0000000000000246 R12: 000000000000057f [ 72.107055] R13: 0000000000011523 R14: 00007ffcd525ab70 R15: 000000aaaaaaaaaa [ 72.115269] Kernel Offset: disabled [ 72.118894] Rebooting in 86400 seconds..