[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.075171] audit: type=1800 audit(1547493132.665:25): pid=7825 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.111486] audit: type=1800 audit(1547493132.665:26): pid=7825 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.133976] audit: type=1800 audit(1547493132.665:27): pid=7825 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 '10.128.0.3' (ECDSA) to the list of known hosts. syzkaller login: [ 58.726068] IPVS: ftp: loaded support on port[0] = 21 [ 58.790463] chnl_net:caif_netlink_parms(): no params data found [ 58.826926] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.833980] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.841407] device bridge_slave_0 entered promiscuous mode [ 58.848860] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.856543] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.863933] device bridge_slave_1 entered promiscuous mode [ 58.880346] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 58.890418] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 58.908204] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 58.916123] team0: Port device team_slave_0 added [ 58.921489] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 58.928926] team0: Port device team_slave_1 added [ 58.934816] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 58.942049] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 59.015883] device hsr_slave_0 entered promiscuous mode [ 59.053491] device hsr_slave_1 entered promiscuous mode [ 59.144234] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 59.151522] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 59.165890] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.172594] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.180537] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.186978] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.218937] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 59.227044] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.237754] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 59.246736] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.256190] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.274442] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.282096] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.293118] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 59.299729] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.308872] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.316965] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.323360] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.345423] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.353853] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.360360] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.367935] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.375907] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.384313] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.391764] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.400377] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.409440] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 59.416082] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.429792] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready executing program [ 59.440023] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 69.076996] ================================================================== [ 69.084498] BUG: KASAN: use-after-free in __xfrm_policy_unlink+0x9ec/0xa00 [ 69.091522] Write of size 8 at addr ffff888086068950 by task syz-executor210/9398 [ 69.099133] [ 69.100756] CPU: 0 PID: 9398 Comm: syz-executor210 Not tainted 4.20.0+ #19 [ 69.107752] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.117097] Call Trace: [ 69.119694] dump_stack+0x1db/0x2d0 [ 69.123343] ? dump_stack_print_info.cold+0x20/0x20 [ 69.128963] ? find_held_lock+0x35/0x120 [ 69.133021] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.137687] print_address_description.cold+0x7c/0x20d [ 69.142983] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.147705] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.152384] kasan_report.cold+0x1b/0x40 [ 69.156441] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.161120] __asan_report_store8_noabort+0x17/0x20 [ 69.166131] __xfrm_policy_unlink+0x9ec/0xa00 [ 69.170630] ? xfrm_policy_walk_done+0x360/0x360 [ 69.175383] ? __fib6_clean_all+0x300/0x430 [ 69.179693] ? xfrm_policy_byid+0x4a0/0x4a0 [ 69.184027] ? fib6_clean_tree+0x340/0x340 [ 69.188269] ? ipv6_route_yield+0x220/0x220 [ 69.192585] ? xfrm_pol_inexact_addr_use_any_list+0x1f0/0x1f0 [ 69.198474] xfrm_policy_insert+0x223/0x910 [ 69.202789] ? __fib6_clean_all+0x430/0x430 [ 69.207134] ? xfrm_policy_inexact_insert+0xda0/0xda0 [ 69.212333] ? copy_from_user_policy+0x110/0x2b0 [ 69.217081] ? xfrm_policy_construct+0x471/0x660 [ 69.221927] xfrm_add_policy+0x2a1/0x6c0 [ 69.225980] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.232290] ? xfrm_policy_construct+0x660/0x660 [ 69.237034] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.242562] ? __nla_parse+0x12a/0x340 [ 69.246443] ? nla_parse+0x45/0x60 [ 69.249988] ? xfrm_policy_construct+0x660/0x660 [ 69.254760] xfrm_user_rcv_msg+0x458/0x8d0 [ 69.259009] ? xfrm_dump_sa_done+0xf0/0xf0 [ 69.263240] ? xfrm_netlink_rcv+0x61/0x90 [ 69.267390] ? __mutex_lock+0x622/0x1670 [ 69.271459] netlink_rcv_skb+0x17d/0x410 [ 69.275518] ? xfrm_dump_sa_done+0xf0/0xf0 [ 69.279746] ? netlink_ack+0xba0/0xba0 [ 69.283650] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 69.288926] xfrm_netlink_rcv+0x70/0x90 [ 69.292890] netlink_unicast+0x574/0x770 [ 69.296956] ? netlink_attachskb+0x980/0x980 [ 69.301372] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.306982] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 69.312006] netlink_sendmsg+0xa05/0xf90 [ 69.316053] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 69.321581] ? netlink_unicast+0x770/0x770 [ 69.325817] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 69.330655] ? apparmor_socket_sendmsg+0x2a/0x30 [ 69.335400] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.340923] ? security_socket_sendmsg+0x93/0xc0 [ 69.345688] ? netlink_unicast+0x770/0x770 [ 69.349922] sock_sendmsg+0xdd/0x130 [ 69.353646] ___sys_sendmsg+0x7ec/0x910 [ 69.357626] ? copy_msghdr_from_user+0x570/0x570 [ 69.362378] ? find_held_lock+0x35/0x120 [ 69.366429] ? __fd_install+0x2a0/0x8c0 [ 69.370399] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.375924] ? lock_downgrade+0x910/0x910 [ 69.380060] ? kasan_check_read+0x11/0x20 [ 69.384194] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.389734] ? __fget_light+0x2db/0x420 [ 69.393710] ? fget_raw+0x20/0x20 [ 69.397157] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.402692] ? __fdget+0x1b/0x20 [ 69.406056] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 69.411597] ? sockfd_lookup_light+0xc2/0x160 [ 69.416102] __sys_sendmsg+0x112/0x270 [ 69.419992] ? __ia32_sys_shutdown+0x80/0x80 [ 69.424424] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.429779] ? trace_hardirqs_off_caller+0x300/0x300 [ 69.434870] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 69.439645] __x64_sys_sendmsg+0x78/0xb0 [ 69.443712] do_syscall_64+0x1a3/0x800 [ 69.447586] ? syscall_return_slowpath+0x5f0/0x5f0 [ 69.452510] ? prepare_exit_to_usermode+0x232/0x3b0 [ 69.457530] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.462365] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.467562] RIP: 0033:0x443e79 [ 69.470771] Code: e8 4c 0c 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 [ 69.489664] RSP: 002b:00007ffed1f6de68 EFLAGS: 00000217 ORIG_RAX: 000000000000002e [ 69.497378] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443e79 [ 69.504641] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000004 [ 69.511912] RBP: 0000000000000000 R08: 0000000000000027 R09: 0000000000000027 [ 69.519188] R10: 0000000000000027 R11: 0000000000000217 R12: 0000000000000588 [ 69.526457] R13: 0000000000010db2 R14: 00007ffed1f6e160 R15: 000000aaaaaaaaaa [ 69.533720] [ 69.535347] Allocated by task 9396: [ 69.538964] save_stack+0x45/0xd0 [ 69.542402] kasan_kmalloc+0xcf/0xe0 [ 69.546099] kmem_cache_alloc_trace+0x151/0x760 [ 69.550754] xfrm_policy_alloc+0xfb/0x530 [ 69.554890] xfrm_policy_construct+0x30/0x660 [ 69.559389] xfrm_add_policy+0x20a/0x6c0 [ 69.563438] xfrm_user_rcv_msg+0x458/0x8d0 [ 69.567755] netlink_rcv_skb+0x17d/0x410 [ 69.571827] xfrm_netlink_rcv+0x70/0x90 [ 69.575805] netlink_unicast+0x574/0x770 [ 69.579853] netlink_sendmsg+0xa05/0xf90 [ 69.583903] sock_sendmsg+0xdd/0x130 [ 69.587630] ___sys_sendmsg+0x7ec/0x910 [ 69.591604] __sys_sendmsg+0x112/0x270 [ 69.595501] __x64_sys_sendmsg+0x78/0xb0 [ 69.599565] do_syscall_64+0x1a3/0x800 [ 69.603466] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.608662] [ 69.610286] Freed by task 7977: [ 69.613556] save_stack+0x45/0xd0 [ 69.616995] __kasan_slab_free+0x102/0x150 [ 69.621216] kasan_slab_free+0xe/0x10 [ 69.625005] kfree+0xcf/0x230 [ 69.628099] xfrm_policy_destroy_rcu+0x48/0x60 [ 69.632866] rcu_process_callbacks+0xc4a/0x1680 [ 69.637540] __do_softirq+0x30b/0xb11 [ 69.641328] [ 69.642939] The buggy address belongs to the object at ffff888086068940 [ 69.642939] which belongs to the cache kmalloc-1k of size 1024 [ 69.655583] The buggy address is located 16 bytes inside of [ 69.655583] 1024-byte region [ffff888086068940, ffff888086068d40) [ 69.667463] The buggy address belongs to the page: [ 69.672379] page:ffffea0002181a00 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0x0 compound_mapcount: 0 [ 69.682330] flags: 0x1fffc0000010200(slab|head) [ 69.686986] raw: 01fffc0000010200 ffffea0002a1bb88 ffffea0002a1db88 ffff88812c3f0ac0 [ 69.694853] raw: 0000000000000000 ffff888086068040 0000000100000007 0000000000000000 [ 69.702715] page dumped because: kasan: bad access detected [ 69.708420] [ 69.710036] Memory state around the buggy address: [ 69.715066] ffff888086068800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.722426] ffff888086068880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 69.729771] >ffff888086068900: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 69.737639] ^ [ 69.743616] ffff888086068980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.750969] ffff888086068a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.758308] ================================================================== [ 69.765659] Disabling lock debugging due to kernel taint [ 69.771179] Kernel panic - not syncing: panic_on_warn set ... [ 69.777077] CPU: 0 PID: 9398 Comm: syz-executor210 Tainted: G B 4.20.0+ #19 [ 69.785471] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.794806] Call Trace: [ 69.797401] dump_stack+0x1db/0x2d0 [ 69.801015] ? dump_stack_print_info.cold+0x20/0x20 [ 69.806059] panic+0x2cb/0x589 [ 69.809243] ? add_taint.cold+0x16/0x16 [ 69.813229] ? trace_hardirqs_on+0xb4/0x310 [ 69.817558] ? trace_hardirqs_on+0xb4/0x310 [ 69.821866] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.826521] end_report+0x47/0x4f [ 69.829958] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.834652] kasan_report.cold+0xe/0x40 [ 69.838643] ? __xfrm_policy_unlink+0x9ec/0xa00 [ 69.843299] __asan_report_store8_noabort+0x17/0x20 [ 69.848299] __xfrm_policy_unlink+0x9ec/0xa00 [ 69.852796] ? xfrm_policy_walk_done+0x360/0x360 [ 69.857539] ? __fib6_clean_all+0x300/0x430 [ 69.861846] ? xfrm_policy_byid+0x4a0/0x4a0 [ 69.866161] ? fib6_clean_tree+0x340/0x340 [ 69.870401] ? ipv6_route_yield+0x220/0x220 [ 69.874714] ? xfrm_pol_inexact_addr_use_any_list+0x1f0/0x1f0 [ 69.880585] xfrm_policy_insert+0x223/0x910 [ 69.884895] ? __fib6_clean_all+0x430/0x430 [ 69.889227] ? xfrm_policy_inexact_insert+0xda0/0xda0 [ 69.894417] ? copy_from_user_policy+0x110/0x2b0 [ 69.899179] ? xfrm_policy_construct+0x471/0x660 [ 69.903922] xfrm_add_policy+0x2a1/0x6c0 [ 69.907986] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.913509] ? xfrm_policy_construct+0x660/0x660 [ 69.919139] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.924664] ? __nla_parse+0x12a/0x340 [ 69.928538] ? nla_parse+0x45/0x60 [ 69.932068] ? xfrm_policy_construct+0x660/0x660 [ 69.936810] xfrm_user_rcv_msg+0x458/0x8d0 [ 69.941042] ? xfrm_dump_sa_done+0xf0/0xf0 [ 69.945262] ? xfrm_netlink_rcv+0x61/0x90 [ 69.949398] ? __mutex_lock+0x622/0x1670 [ 69.953458] netlink_rcv_skb+0x17d/0x410 [ 69.957528] ? xfrm_dump_sa_done+0xf0/0xf0 [ 69.961789] ? netlink_ack+0xba0/0xba0 [ 69.965666] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 69.971057] xfrm_netlink_rcv+0x70/0x90 [ 69.975035] netlink_unicast+0x574/0x770 [ 69.979094] ? netlink_attachskb+0x980/0x980 [ 69.983489] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.989011] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 69.994025] netlink_sendmsg+0xa05/0xf90 [ 69.998094] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.003629] ? netlink_unicast+0x770/0x770 [ 70.007867] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 70.012696] ? apparmor_socket_sendmsg+0x2a/0x30 [ 70.017457] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.022984] ? security_socket_sendmsg+0x93/0xc0 [ 70.027730] ? netlink_unicast+0x770/0x770 [ 70.031959] sock_sendmsg+0xdd/0x130 [ 70.035680] ___sys_sendmsg+0x7ec/0x910 [ 70.039650] ? copy_msghdr_from_user+0x570/0x570 [ 70.044408] ? find_held_lock+0x35/0x120 [ 70.048477] ? __fd_install+0x2a0/0x8c0 [ 70.052449] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.058337] ? lock_downgrade+0x910/0x910 [ 70.062473] ? kasan_check_read+0x11/0x20 [ 70.066605] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.072143] ? __fget_light+0x2db/0x420 [ 70.076111] ? fget_raw+0x20/0x20 [ 70.079579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.085137] ? __fdget+0x1b/0x20 [ 70.088493] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.094035] ? sockfd_lookup_light+0xc2/0x160 [ 70.098866] __sys_sendmsg+0x112/0x270 [ 70.102745] ? __ia32_sys_shutdown+0x80/0x80 [ 70.107167] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.112605] ? trace_hardirqs_off_caller+0x300/0x300 [ 70.117713] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 70.122457] __x64_sys_sendmsg+0x78/0xb0 [ 70.126526] do_syscall_64+0x1a3/0x800 [ 70.130401] ? syscall_return_slowpath+0x5f0/0x5f0 [ 70.135316] ? prepare_exit_to_usermode+0x232/0x3b0 [ 70.140318] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 70.145263] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.150445] RIP: 0033:0x443e79 [ 70.153649] Code: e8 4c 0c 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 [ 70.172904] RSP: 002b:00007ffed1f6de68 EFLAGS: 00000217 ORIG_RAX: 000000000000002e [ 70.180597] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443e79 [ 70.187858] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000004 [ 70.195115] RBP: 0000000000000000 R08: 0000000000000027 R09: 0000000000000027 [ 70.202389] R10: 0000000000000027 R11: 0000000000000217 R12: 0000000000000588 [ 70.209648] R13: 0000000000010db2 R14: 00007ffed1f6e160 R15: 000000aaaaaaaaaa [ 70.217960] Kernel Offset: disabled [ 70.221584] Rebooting in 86400 seconds..