device eql entered promiscuous mode 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-executor5/13696: #0: (cb_lock){++++}, at: [<0000000006577bc9>] genl_rcv+0x19/0x40 net/netlink/genetlink.c:634 #1: (genl_mutex){+.+.}, at: [<00000000481bb342>] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [<00000000481bb342>] genl_rcv_msg+0x115/0x140 net/netlink/genetlink.c:622 stack backtrace: CPU: 0 PID: 13696 Comm: syz-executor5 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:00007f98bdaefc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020003000 RDI: 0000000000000013 RBP: 0000000000000602 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f80d0 R13: 00000000ffffffff R14: 00007f98bdaf06d4 R15: 0000000000000000 kauditd_printk_skb: 817 callbacks suppressed audit: type=1400 audit(1517210646.262:5832): avc: denied { prog_load } for pid=13913 comm="syz-executor6" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 binder: 13950 RLIMIT_NICE not set binder: release 13934:13950 transaction 49 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 49, target dead binder: 13950 RLIMIT_NICE not set binder_alloc: 13934: binder_alloc_buf, no vma binder: 13934:13959 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=67 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=68 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=69 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded ip_tunnel: non-ECT from 172.20.0.0 with TOS=0x1 ip_tunnel: non-ECT from 172.20.0.0 with TOS=0x1 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=14086 comm=syz-executor7 binder: 14090:14100 ERROR: BC_REGISTER_LOOPER called without request binder: 14090:14100 ERROR: BC_ENTER_LOOPER called after BC_REGISTER_LOOPER binder: 14090:14100 ERROR: BC_REGISTER_LOOPER called without request binder: 14090:14100 ERROR: BC_ENTER_LOOPER called after BC_REGISTER_LOOPER device eql entered promiscuous mode xt_hashlimit: hashlimit invalid interval binder: 14523 RLIMIT_NICE not set binder: 14523 RLIMIT_NICE not set binder: 14515:14523 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 14517 RLIMIT_NICE not set IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 xt_socket: unknown flags 0xec kauditd_printk_skb: 865 callbacks suppressed audit: type=1400 audit(1517210651.263:6557): avc: denied { net_admin } for pid=3737 comm="syz-executor2" 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(1517210651.269:6558): avc: denied { net_admin } for pid=3737 comm="syz-executor2" 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(1517210651.273:6559): avc: denied { net_admin } for pid=3737 comm="syz-executor2" 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(1517210651.308:6560): avc: denied { map } for pid=14812 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(1517210651.311:6561): avc: denied { net_admin } for pid=3734 comm="syz-executor3" 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(1517210651.322:6562): avc: denied { map } for pid=14812 comm="modprobe" path="/etc/ld.so.cache" dev="sda1" ino=2503 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1517210651.347:6563): avc: denied { map } for pid=14815 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(1517210651.354:6564): avc: denied { net_admin } for pid=3739 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(1517210651.356:6565): avc: denied { net_admin } for pid=14806 comm="syz-executor4" 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(1517210651.499:6566): avc: denied { net_admin } for pid=3728 comm="syz-executor4" 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 device lo entered promiscuous mode openvswitch: netlink: Message has 4 unknown bytes. binder: 15035:15036 Acquire 1 refcount change on invalid ref 0 ret -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 15006:15026 ioctl 40046207 0 returned -16 binder_alloc: 15006: binder_alloc_buf, no vma binder: 15006:15043 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 15006:15026 transaction 55 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 55, target dead SELinux: unrecognized netlink message: protocol=0 nlmsg_type=49732 sclass=netlink_route_socket pig=15062 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=49732 sclass=netlink_route_socket pig=15064 comm=syz-executor1 Protocol error: SET target dimension is over the limit! x86/PAT: syz-executor2:15123 map pfn RAM range req write-combining for [mem 0x1be980000-0x1be982fff], got write-back Protocol error: SET target dimension is over the limit! x86/PAT: syz-executor2:15123 map pfn RAM range req write-combining for [mem 0x1c6ed0000-0x1c6ed2fff], got write-back netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'. xt_connbytes: Forcing CT accounting to be enabled binder: 15269 RLIMIT_NICE not set binder: 15269 RLIMIT_NICE not set binder: 15269 RLIMIT_NICE not set binder: 15263:15269 got transaction with unaligned buffers size, 5 binder_alloc: binder_alloc_mmap_handler: 15263 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 15263:15287 ioctl 40046207 0 returned -16 binder_alloc: 15263: binder_alloc_buf, no vma binder: 15263:15287 transaction failed 29189/-3, size 0-0 line 2903 binder: 15279 RLIMIT_NICE not set binder: 15263:15269 transaction failed 29201/-22, size 0-0 line 2948 binder: send failed reply for transaction 58 to 15263:15279 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29190 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: 15342 RLIMIT_NICE not set binder: 15342 RLIMIT_NICE not set binder: BINDER_SET_CONTEXT_MGR already set binder: 15337:15342 ioctl 40046207 0 returned -16 binder_alloc: 15337: binder_alloc_buf, no vma binder: 15337:15368 transaction failed 29189/-3, size 0-0 line 2903 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 15337:15342 transaction 62 in, still active binder: send failed reply for transaction 62 to 15337:15368 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 kvm: apic: phys broadcast and lowest prio kvm: apic: phys broadcast and lowest prio