[ 88.163019][ T27] audit: type=1400 audit(1578287163.346:37): avc: denied { watch } for pid=10070 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 88.215574][ T27] audit: type=1400 audit(1578287163.376:38): avc: denied { watch } for pid=10070 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 88.416889][ T27] audit: type=1800 audit(1578287163.606:39): pid=9977 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 88.438610][ T27] audit: type=1800 audit(1578287163.606:40): pid=9977 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 91.167727][ T27] audit: type=1400 audit(1578287166.356:41): avc: denied { map } for pid=10155 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 '10.128.0.221' (ECDSA) to the list of known hosts. executing program [ 97.895806][ T27] audit: type=1400 audit(1578287173.086:42): avc: denied { map } for pid=10167 comm="syz-executor191" path="/root/syz-executor191668132" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program [ 98.209184][T10173] [ 98.211536][T10173] ===================================== [ 98.217121][T10173] WARNING: bad unlock balance detected! [ 98.222686][T10173] 5.5.0-rc5-syzkaller #0 Not tainted [ 98.227984][T10173] ------------------------------------- [ 98.233500][T10173] syz-executor191/10173 is trying to release lock (sk_lock-AF_INET6) at: [ 98.241899][T10173] [] gtp_encap_enable_socket+0x146/0x400 [ 98.249107][T10173] but there are no more locks to release! [ 98.254797][T10173] [ 98.254797][T10173] other info that might help us debug this: [ 98.262833][T10173] 2 locks held by syz-executor191/10173: [ 98.268435][T10173] #0: ffffffff8a4d8840 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x405/0xaf0 [ 98.277267][T10173] #1: ffff8880a2bff560 (slock-AF_INET6){+...}, at: release_sock+0x20/0x1c0 [ 98.285925][T10173] [ 98.285925][T10173] stack backtrace: [ 98.291798][T10173] CPU: 1 PID: 10173 Comm: syz-executor191 Not tainted 5.5.0-rc5-syzkaller #0 [ 98.300537][T10173] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.310582][T10173] Call Trace: [ 98.313855][T10173] dump_stack+0x197/0x210 [ 98.318163][T10173] ? gtp_encap_enable_socket+0x146/0x400 [ 98.323773][T10173] print_unlock_imbalance_bug.cold+0x114/0x123 [ 98.329902][T10173] ? gtp_encap_enable_socket+0x146/0x400 [ 98.335600][T10173] lock_release+0x5f2/0x960 [ 98.340088][T10173] ? __kasan_check_write+0x14/0x20 [ 98.345177][T10173] ? lock_downgrade+0x920/0x920 [ 98.350004][T10173] ? lock_acquire+0x190/0x410 [ 98.354676][T10173] ? release_sock+0x20/0x1c0 [ 98.359244][T10173] release_sock+0x17c/0x1c0 [ 98.363722][T10173] gtp_encap_enable_socket+0x146/0x400 [ 98.369159][T10173] ? gtp_find_pdp_by_link+0x480/0x480 [ 98.374507][T10173] ? memset+0x32/0x40 [ 98.378475][T10173] ? alloc_netdev_mqs+0xa22/0xde0 [ 98.383490][T10173] gtp_newlink+0x9fc/0xc60 [ 98.387886][T10173] ? rtnl_create_link+0x192/0xab0 [ 98.392898][T10173] ? netlink_ns_capable+0x26/0x30 [ 98.397901][T10173] ? gtp_genl_get_pdp+0x5c0/0x5c0 [ 98.402902][T10173] __rtnl_newlink+0x109e/0x1790 [ 98.407731][T10173] ? rtnl_link_unregister+0x250/0x250 [ 98.413078][T10173] ? is_bpf_text_address+0xce/0x160 [ 98.418254][T10173] ? kernel_text_address+0x73/0xf0 [ 98.423342][T10173] ? unwind_get_return_address+0x61/0xa0 [ 98.428948][T10173] ? profile_setup.cold+0xbb/0xbb [ 98.433967][T10173] ? arch_stack_walk+0x97/0xf0 [ 98.438723][T10173] ? stack_trace_save+0xac/0xe0 [ 98.443605][T10173] ? stack_trace_consume_entry+0x190/0x190 [ 98.449486][T10173] ? mark_lock+0xc2/0x1220 [ 98.453884][T10173] ? save_stack+0x5c/0x90 [ 98.458198][T10173] ? save_stack+0x23/0x90 [ 98.462508][T10173] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 98.468399][T10173] ? kasan_kmalloc+0x9/0x10 [ 98.472879][T10173] ? kmem_cache_alloc_trace+0x158/0x790 [ 98.478453][T10173] ? rtnl_newlink+0x4b/0xa0 [ 98.482933][T10173] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 98.488580][T10173] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 98.494684][T10173] rtnl_newlink+0x69/0xa0 [ 98.498992][T10173] ? __rtnl_newlink+0x1790/0x1790 [ 98.504045][T10173] rtnetlink_rcv_msg+0x45e/0xaf0 [ 98.508962][T10173] ? rtnl_bridge_getlink+0x910/0x910 [ 98.514230][T10173] ? lock_downgrade+0x920/0x920 [ 98.519064][T10173] ? netlink_deliver_tap+0x228/0xbe0 [ 98.524332][T10173] ? find_held_lock+0x35/0x130 [ 98.529085][T10173] netlink_rcv_skb+0x177/0x450 [ 98.533831][T10173] ? rtnl_bridge_getlink+0x910/0x910 [ 98.539104][T10173] ? netlink_ack+0xb50/0xb50 [ 98.543683][T10173] ? __kasan_check_read+0x11/0x20 [ 98.548738][T10173] ? netlink_deliver_tap+0x24a/0xbe0 [ 98.554011][T10173] rtnetlink_rcv+0x1d/0x30 [ 98.558413][T10173] netlink_unicast+0x58c/0x7d0 [ 98.563178][T10173] ? netlink_attachskb+0x870/0x870 [ 98.568283][T10173] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.574503][T10173] netlink_sendmsg+0x91c/0xea0 [ 98.579258][T10173] ? netlink_unicast+0x7d0/0x7d0 [ 98.584184][T10173] ? tomoyo_socket_sendmsg+0x26/0x30 [ 98.589456][T10173] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.595679][T10173] ? security_socket_sendmsg+0x8d/0xc0 [ 98.601120][T10173] ? netlink_unicast+0x7d0/0x7d0 [ 98.606047][T10173] sock_sendmsg+0xd7/0x130 [ 98.610465][T10173] ____sys_sendmsg+0x753/0x880 [ 98.615210][T10173] ? kernel_sendmsg+0x50/0x50 [ 98.619882][T10173] ? __fget+0x35d/0x550 [ 98.624020][T10173] ? find_held_lock+0x35/0x130 [ 98.628763][T10173] ___sys_sendmsg+0x100/0x170 [ 98.633420][T10173] ? sendmsg_copy_msghdr+0x70/0x70 [ 98.638556][T10173] ? __kasan_check_read+0x11/0x20 [ 98.643561][T10173] ? __fget+0x37f/0x550 [ 98.647736][T10173] ? ksys_dup3+0x3e0/0x3e0 [ 98.652128][T10173] ? __kasan_check_read+0x11/0x20 [ 98.657136][T10173] ? mark_lock+0xc2/0x1220 [ 98.661533][T10173] ? __fget_light+0x1a9/0x230 [ 98.666191][T10173] ? __fdget+0x1b/0x20 [ 98.670241][T10173] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 98.676462][T10173] __sys_sendmsg+0x105/0x1d0 [ 98.681028][T10173] ? __sys_sendmsg_sock+0xc0/0xc0 [ 98.686031][T10173] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 98.691558][T10173] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 98.697003][T10173] ? do_syscall_64+0x26/0x790 [ 98.701670][T10173] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 98.707733][T10173] ? do_syscall_64+0x26/0x790 [ 98.712436][T10173] __x64_sys_sendmsg+0x78/0xb0 [ 98.717185][T10173] do_syscall_64+0xfa/0x790 [ 98.721668][T10173] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 98.727585][T10173] RIP: 0033:0x446c39 [ 98.731503][T10173] Code: e8 5c b3 02 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 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 98.751106][T10173] RSP: 002b:00007fa942d7cdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 98.759496][T10173] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446c39 [ 98.767487][T10173] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 98.775441][T10173] RBP: 00000000006dbc30 R08: 0000000000000004 R09: 0000000000000000 [ 98.783395][T10173] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006dbc3c [ 98.791344][T10173] R13: 00007ffe1d4b21cf R14: 00007fa942d7d9c0 R15: 20c49ba5e353f7cf executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program