============================= WARNING: suspicious RCU usage 4.15.0-rc9+ #284 Not tainted ----------------------------- net/tipc/bearer.c:177 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor0/29548: #0: (cb_lock){++++}, at: [<00000000b69d5ec0>] genl_rcv+0x19/0x40 net/netlink/genetlink.c:634 #1: (genl_mutex){+.+.}, at: [<00000000ba0ccfdf>] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [<00000000ba0ccfdf>] genl_rcv_msg+0x115/0x140 net/netlink/genetlink.c:622 stack backtrace: CPU: 1 PID: 29548 Comm: syz-executor0 Not tainted 4.15.0-rc9+ #284 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4587 tipc_bearer_find+0x2b4/0x3b0 net/tipc/bearer.c:177 tipc_nl_compat_link_set+0x329/0x9f0 net/tipc/netlink_compat.c:729 __tipc_nl_compat_doit net/tipc/netlink_compat.c:288 [inline] tipc_nl_compat_doit+0x15b/0x670 net/tipc/netlink_compat.c:335 tipc_nl_compat_handle net/tipc/netlink_compat.c:1119 [inline] tipc_nl_compat_recv+0x1135/0x18f0 net/tipc/netlink_compat.c:1201 genl_family_rcv_msg+0x7b7/0xfb0 net/netlink/genetlink.c:599 genl_rcv_msg+0xb2/0x140 net/netlink/genetlink.c:624 netlink_rcv_skb+0x14b/0x380 net/netlink/af_netlink.c:2409 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline] netlink_unicast+0x4ee/0x700 net/netlink/af_netlink.c:1301 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1864 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg+0xca/0x110 net/socket.c:648 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2028 __sys_sendmsg+0xe5/0x210 net/socket.c:2062 SYSC_sendmsg net/socket.c:2073 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2069 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f46c75a0c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020003000 RDI: 0000000000000013 RBP: 00000000000005c4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f7b00 R13: 00000000ffffffff R14: 00007f46c75a16d4 R15: 0000000000000000 SELinux: policydb magic number 0xa9efa5cb does not match expected magic number 0xf97cff8c SELinux: failed to load policy kauditd_printk_skb: 985 callbacks suppressed audit: type=1400 audit(1517209186.495:17172): avc: denied { net_admin } for pid=29776 comm="syz-executor0" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209186.496:17173): avc: denied { create } for pid=29782 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 audit: type=1400 audit(1517209186.498:17174): avc: denied { dac_read_search } for pid=29782 comm="syz-executor5" capability=2 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209186.506:17175): avc: denied { write } for pid=29782 comm="syz-executor5" path="socket:[65380]" dev="sockfs" ino=65380 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 audit: type=1400 audit(1517209186.507:17176): avc: denied { net_admin } for pid=29782 comm="syz-executor5" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209186.511:17177): avc: denied { create } for pid=29782 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 audit: type=1400 audit(1517209186.515:17178): avc: denied { dac_read_search } for pid=29782 comm="syz-executor5" capability=2 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 QAT: Invalid ioctl audit: type=1400 audit(1517209186.529:17179): avc: denied { net_admin } for pid=16093 comm="syz-executor5" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 QAT: Invalid ioctl audit: type=1400 audit(1517209186.536:17180): avc: denied { net_admin } for pid=16093 comm="syz-executor5" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 sock: sock_set_timeout: `syz-executor6' (pid 29858) tries to set negative timeout audit: audit_backlog=65 > audit_backlog_limit=64 sock: sock_set_timeout: `syz-executor6' (pid 29868) tries to set negative timeout QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl netlink: 'syz-executor1': attribute type 21 has an invalid length. QAT: Invalid ioctl netlink: 'syz-executor1': attribute type 21 has an invalid length. device eql entered promiscuous mode NFQUEUE: number of total queues is 0 binder: 30105:30109 got reply transaction with bad transaction stack, transaction 135 has target 30105:0 binder: 30105:30109 transaction failed 29201/-71, size 40-0 line 2718 binder: BINDER_SET_CONTEXT_MGR already set binder: 30105:30121 ioctl 40046207 0 returned -16 binder: 30105:30125 got reply transaction with no transaction stack binder: 30105:30125 transaction failed 29201/-71, size 40-0 line 2703 binder_alloc: 30105: binder_alloc_buf, no vma binder: 30105:30109 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 30105:30109 transaction 135 out, still active binder: send failed reply for transaction 135, target dead device syz6 entered promiscuous mode device eql entered promiscuous mode kauditd_printk_skb: 751 callbacks suppressed audit: type=1400 audit(1517209191.506:17927): avc: denied { net_admin } for pid=3736 comm="syz-executor0" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209191.542:17928): avc: denied { sys_admin } for pid=30554 comm="syz-executor0" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209191.543:17929): avc: denied { net_raw } for pid=30556 comm="syz-executor5" capability=13 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209191.544:17930): avc: denied { sys_admin } for pid=30554 comm="syz-executor0" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209191.551:17931): avc: denied { create } for pid=30553 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 audit: type=1400 audit(1517209191.554:17932): avc: denied { ioctl } for pid=30553 comm="syz-executor4" path="socket:[70044]" dev="sockfs" ino=70044 ioctlcmd=0x8940 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 audit: type=1400 audit(1517209191.561:17933): avc: denied { sys_admin } for pid=30554 comm="syz-executor0" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209191.565:17934): avc: denied { sys_admin } for pid=30554 comm="syz-executor0" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 audit: type=1400 audit(1517209191.580:17935): avc: denied { map } for pid=30570 comm="modprobe" path="/bin/kmod" dev="sda1" ino=1440 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517209191.583:17936): avc: denied { create } for pid=30553 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=22006 sclass=netlink_xfrm_socket pig=30677 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=22006 sclass=netlink_xfrm_socket pig=30691 comm=syz-executor7