[?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. [ 18.047074] audit: type=1400 audit(1518208112.427:6): avc: denied { map } for pid=4148 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 '10.128.0.52' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.370183] audit: type=1400 audit(1518208118.750:7): avc: denied { map } for pid=4162 comm="syzkaller307626" path="/root/syzkaller307626453" 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 [ 24.372776] [ 24.396143] audit: type=1400 audit(1518208118.751:8): avc: denied { create } for pid=4162 comm="syzkaller307626" 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 [ 24.397813] ============================= [ 24.397819] WARNING: suspicious RCU usage [ 24.421679] audit: type=1400 audit(1518208118.751:9): avc: denied { write } for pid=4162 comm="syzkaller307626" 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 [ 24.454030] 4.15.0+ #216 Not tainted [ 24.457751] ----------------------------- [ 24.461905] net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! [ 24.469357] [ 24.469357] other info that might help us debug this: [ 24.469357] [ 24.477515] [ 24.477515] rcu_scheduler_active = 2, debug_locks = 1 [ 24.484228] 2 locks held by syzkaller307626/4162: [ 24.489096] #0: (cb_lock){++++}, at: [<0000000003e14ab0>] genl_rcv+0x19/0x40 [ 24.496511] #1: (genl_mutex){+.+.}, at: [<00000000cccfca4b>] genl_rcv_msg+0x115/0x140 [ 24.504694] [ 24.504694] stack backtrace: [ 24.509226] CPU: 1 PID: 4162 Comm: syzkaller307626 Not tainted 4.15.0+ #216 [ 24.516311] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.525677] Call Trace: [ 24.528245] dump_stack+0x194/0x257 [ 24.531847] ? arch_local_irq_restore+0x53/0x53 [ 24.536499] lockdep_rcu_suspicious+0x123/0x170 [ 24.541148] tipc_bearer_find+0x2b4/0x3b0 [ 24.545271] ? tipc_media_addr_printf+0x3a0/0x3a0 [ 24.550099] tipc_nl_compat_link_set+0x329/0x9f0 [ 24.554837] tipc_nl_compat_doit+0x15b/0x670 [ 24.559221] ? security_capable+0x8e/0xc0 [ 24.563345] ? tipc_nl_compat_link_stat_dump+0x3000/0x3000 [ 24.568949] ? ns_capable_common+0xcf/0x160 [ 24.573251] ? ns_capable+0x22/0x30 [ 24.576860] ? __netlink_ns_capable+0xe1/0x120 [ 24.581428] tipc_nl_compat_recv+0x1135/0x18f0 [ 24.585989] ? tipc_nl_compat_doit+0x670/0x670 [ 24.590547] ? tipc_nl_node_dump+0x1290/0x1290 [ 24.595102] ? tipc_nl_compat_bearer_enable+0x5c0/0x5c0 [ 24.600439] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.605448] ? __radix_tree_lookup+0x435/0x5e0 [ 24.610012] genl_family_rcv_msg+0x7b7/0xfb0 [ 24.614401] ? genl_rcv+0x40/0x40 [ 24.617829] ? lock_downgrade+0x980/0x980 [ 24.621961] ? __lock_is_held+0xb6/0x140 [ 24.626017] genl_rcv_msg+0xb2/0x140 [ 24.629707] netlink_rcv_skb+0x14b/0x380 [ 24.633744] ? genl_family_rcv_msg+0xfb0/0xfb0 [ 24.638302] ? netlink_ack+0xa10/0xa10 [ 24.642162] ? genl_rcv+0x19/0x40 [ 24.645591] ? netlink_skb_destructor+0x1d0/0x1d0 [ 24.650411] ? selinux_nlmsg_lookup+0x32b/0x430 [ 24.655058] genl_rcv+0x28/0x40 [ 24.658315] netlink_unicast+0x4c4/0x6b0 [ 24.662355] ? netlink_attachskb+0x8a0/0x8a0 [ 24.666741] ? security_netlink_send+0x81/0xb0 [ 24.671307] netlink_sendmsg+0xa4a/0xe60 [ 24.675353] ? netlink_unicast+0x6b0/0x6b0 [ 24.679576] ? security_socket_sendmsg+0x89/0xb0 [ 24.684919] ? netlink_unicast+0x6b0/0x6b0 [ 24.689130] sock_sendmsg+0xca/0x110 [ 24.692823] ___sys_sendmsg+0x767/0x8b0 [ 24.696783] ? copy_msghdr_from_user+0x590/0x590 [ 24.701519] ? _raw_spin_unlock+0x22/0x30 [ 24.705653] ? __pmd_alloc+0x4e0/0x4e0 [ 24.709513] ? check_noncircular+0x20/0x20 [ 24.713725] ? __fget_light+0x2b2/0x3c0 [ 24.717677] ? fget_raw+0x20/0x20 [ 24.721113] ? handle_mm_fault+0x270/0x970 [ 24.725327] ? find_held_lock+0x35/0x1d0 [ 24.729380] __sys_sendmsg+0xe5/0x210 [ 24.733155] ? __sys_sendmsg+0xe5/0x210 [ 24.737106] ? SyS_shutdown+0x290/0x290 [ 24.741063] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 24.745618] ? vmacache_find+0x5f/0x280 [ 24.749589] compat_SyS_sendmsg+0x2a/0x40 [ 24.753710] ? compat_SyS_getsockopt+0x420/0x420 [ 24.758438] do_fast_syscall_32+0x3ee/0xfa1 [ 24.762743] ? do_int80_syscall_32+0x9d0/0x9d0 [ 24.767301] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.772040] ? syscall_return_slowpath+0x550/0x550 [ 24.776947] ? syscall_return_slowpath+0x2ac/0x550 [ 24.781850] ? prepare_exit_to_usermode+0x350/0x350 [ 24.786841] ? retint_user+0x18/0x18 [ 24.790533] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.795359] entry_SYSENTER_compat+0x54/0x63 [ 24.799740] RIP: 0023:0xf7f30c79 [ 24.803078] RSP: 002b:00000000fff19b4c EFLAGS: 00000203 ORIG_RAX: 0000000000000172 [ 24.810759] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020003000 [ 24.818002] RDX: 0000000000000000 RSI: 0000000