[?25l[?1c7[ ok 8[?25h[?0c. [....] 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. [ 18.958606] audit: type=1400 audit(1518211170.665:6): avc: denied { map } for pid=4163 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.20' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.345598] audit: type=1400 audit(1518211177.052:7): avc: denied { map } for pid=4177 comm="syzkaller763588" path="/root/syzkaller763588968" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 25.348446] [ 25.371580] audit: type=1400 audit(1518211177.052:8): avc: denied { create } for pid=4177 comm="syzkaller763588" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 25.373275] ============================= [ 25.373280] WARNING: suspicious RCU usage [ 25.397147] audit: type=1400 audit(1518211177.052:9): avc: denied { write } for pid=4177 comm="syzkaller763588" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 25.429460] 4.15.0+ #306 Not tainted [ 25.433185] ----------------------------- [ 25.437356] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 25.444822] [ 25.444822] other info that might help us debug this: [ 25.444822] [ 25.452977] [ 25.452977] rcu_scheduler_active = 2, debug_locks = 1 [ 25.459655] 2 locks held by syzkaller763588/4177: [ 25.464513] #0: (cb_lock){++++}, at: [<000000009cd5c43c>] genl_rcv+0x19/0x40 [ 25.471909] #1: (genl_mutex){+.+.}, at: [<0000000085e9dd38>] genl_rcv_msg+0x115/0x140 [ 25.480076] [ 25.480076] stack backtrace: [ 25.484588] CPU: 0 PID: 4177 Comm: syzkaller763588 Not tainted 4.15.0+ #306 [ 25.491670] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.501003] Call Trace: [ 25.503587] dump_stack+0x194/0x257 [ 25.507202] ? arch_local_irq_restore+0x53/0x53 [ 25.511861] lockdep_rcu_suspicious+0x123/0x170 [ 25.516510] tipc_bearer_find+0x2b4/0x3b0 [ 25.520642] ? tipc_media_addr_printf+0x3a0/0x3a0 [ 25.525471] tipc_nl_compat_link_set+0x329/0x9f0 [ 25.530204] tipc_nl_compat_doit+0x15b/0x670 [ 25.534592] ? security_capable+0x8e/0xc0 [ 25.538716] ? tipc_nl_compat_link_stat_dump+0x3000/0x3000 [ 25.544331] ? ns_capable_common+0xcf/0x160 [ 25.548630] ? ns_capable+0x22/0x30 [ 25.552235] ? __netlink_ns_capable+0xe1/0x120 [ 25.556802] tipc_nl_compat_recv+0x1135/0x18f0 [ 25.561365] ? tipc_nl_compat_doit+0x670/0x670 [ 25.565926] ? tipc_nl_node_dump+0x1290/0x1290 [ 25.570498] ? tipc_nl_compat_bearer_enable+0x5c0/0x5c0 [ 25.575854] ? __save_stack_trace+0x7e/0xd0 [ 25.580172] ? __radix_tree_lookup+0x435/0x5e0 [ 25.584752] genl_family_rcv_msg+0x7b7/0xfb0 [ 25.589152] ? genl_rcv+0x40/0x40 [ 25.592587] ? lock_downgrade+0x980/0x980 [ 25.596719] ? __lock_is_held+0xb6/0x140 [ 25.600775] genl_rcv_msg+0xb2/0x140 [ 25.604474] netlink_rcv_skb+0x14b/0x380 [ 25.608511] ? genl_family_rcv_msg+0xfb0/0xfb0 [ 25.613080] ? netlink_ack+0xa10/0xa10 [ 25.616946] ? genl_rcv+0x19/0x40 [ 25.620382] ? netlink_skb_destructor+0x1d0/0x1d0 [ 25.625206] ? selinux_nlmsg_lookup+0x32b/0x430 [ 25.629853] genl_rcv+0x28/0x40 [ 25.633119] netlink_unicast+0x4c4/0x6b0 [ 25.637164] ? netlink_attachskb+0x8a0/0x8a0 [ 25.641554] ? security_netlink_send+0x81/0xb0 [ 25.646118] netlink_sendmsg+0xa4a/0xe60 [ 25.650166] ? netlink_unicast+0x6b0/0x6b0 [ 25.654395] ? security_socket_sendmsg+0x89/0xb0 [ 25.659127] ? netlink_unicast+0x6b0/0x6b0 [ 25.663356] sock_sendmsg+0xca/0x110 [ 25.667053] ___sys_sendmsg+0x767/0x8b0 [ 25.671011] ? copy_msghdr_from_user+0x590/0x590 [ 25.675762] ? lock_downgrade+0x980/0x980 [ 25.679885] ? check_noncircular+0x20/0x20 [ 25.684110] ? find_held_lock+0x35/0x1d0 [ 25.688151] ? __fget_light+0x2b2/0x3c0 [ 25.692113] ? fget_raw+0x20/0x20 [ 25.695553] ? handle_mm_fault+0x270/0x970 [ 25.699779] ? find_held_lock+0x35/0x1d0 [ 25.703825] ? __do_page_fault+0x5f7/0xc90 [ 25.708046] ? lock_downgrade+0x980/0x980 [ 25.712184] __sys_sendmsg+0xe5/0x210 [ 25.715958] ? __sys_sendmsg+0xe5/0x210 [ 25.719910] ? SyS_shutdown+0x290/0x290 [ 25.723872] ? __do_page_fault+0x3d6/0xc90 [ 25.728099] ? move_addr_to_kernel+0x60/0x60 [ 25.732492] SyS_sendmsg+0x2d/0x50 [ 25.736015] ? __sys_sendmsg+0x210/0x210 [ 25.740065] do_syscall_64+0x282/0x940 [ 25.743931] ? __do_page_fault+0xc90/0xc90 [ 25.748144] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.752879] ? syscall_return_slowpath+0x550/0x550 [ 25.757790] ? syscall_return_slowpath+0x2ac/0x550 [ 25.762698] ? prepare_exit_to_usermode+0x350/0x350 [ 25.767695] ? retint_user+0x18/0x18 [ 25.771406] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.776237] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 25.781402] RIP: 0033:0x43fd69 [ 25.784571] RSP: 002b:00007ffdeece1d68 EFLAGS: 00000203 ORIG_RAX: 000000000000002e [ 25.792255] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: