============================= 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-executor1/4369: #0: (cb_lock){++++}, at: [<000000004f504277>] genl_rcv+0x19/0x40 net/netlink/genetlink.c:634 #1: (genl_mutex){+.+.}, at: [<00000000a6069e7e>] genl_lock net/netlink/genetlink.c:33 [inline] #1: (genl_mutex){+.+.}, at: [<00000000a6069e7e>] genl_rcv_msg+0x115/0x140 net/netlink/genetlink.c:622 stack backtrace: CPU: 1 PID: 4369 Comm: syz-executor1 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:00007f30030e1c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020003000 RDI: 0000000000000014 RBP: 00000000000005c4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f7b00 R13: 00000000ffffffff R14: 00007f30030e26d4 R15: 0000000000000000 device syz3 left promiscuous mode device syz3 entered promiscuous mode device syz3 left promiscuous mode device syz3 entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): syz3.0: link becomes ready irq bypass consumer (token 00000000226f096d) registration fails: -16 binder: 5039:5049 ERROR: BC_REGISTER_LOOPER called without request binder: 5049 RLIMIT_NICE not set binder: 5049 RLIMIT_NICE not set binder: 5039:5049 ioctl c008ae05 20002ff5 returned -22 binder: 5049 RLIMIT_NICE not set binder: BINDER_SET_CONTEXT_MGR already set binder: 5039:5058 ERROR: BC_REGISTER_LOOPER called without request binder: 5058 RLIMIT_NICE not set binder_alloc: 5039: binder_alloc_buf, no vma binder: 5039:5078 transaction failed 29189/-3, size 0-0 line 2903 binder: 5039:5049 ioctl 40046207 0 returned -16 binder: 5039:5086 ioctl c008ae05 20002ff5 returned -22 binder: 5039:5049 got reply transaction with no transaction stack binder: 5039:5049 transaction failed 29201/-71, size 24-0 line 2703 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_COMPLETE binder: undelivered transaction 187, process died. binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29189 kauditd_printk_skb: 194 callbacks suppressed audit: type=1326 audit(1517213052.272:2149): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5298 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.275:2150): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5298 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=331 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.275:2151): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5298 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.275:2152): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5298 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 irq bypass consumer (token 000000005ba19db2) registration fails: -16 audit: type=1326 audit(1517213052.659:2153): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5345 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. audit: type=1326 audit(1517213052.689:2154): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5345 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=257 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.690:2155): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5345 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.693:2156): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5345 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=16 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.693:2157): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5345 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x7ffc0000 audit: type=1326 audit(1517213052.697:2158): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5345 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=25 compat=0 ip=0x453299 code=0x7ffc0000 tmpfs: No value for mount option '3VxZ' tmpfs: No value for mount option '3VxZ' device eql entered promiscuous mode tmpfs: No value for mount option ';; 8' tmpfs: No value for mount option ';; 8' binder: 5554:5557 ioctl 40046205 7fff returned -22 binder: 5554:5557 ioctl c0306201 20000000 returned -14 binder: 5554:5559 ioctl 40046205 7fff returned -22 xt_l2tp: unknown flags: c2 xt_l2tp: unknown flags: c2 xt_connbytes: Forcing CT accounting to be enabled QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl syz-executor3 (5701): /proc/5700/oom_adj is deprecated, please use /proc/5700/oom_score_adj instead. device eql entered promiscuous mode QAT: Invalid ioctl loop_reread_partitions: partition scan of loop0 (ڏ:J/'n `)n"oeVu y؝ŴZͫ) failed (rc=-13) netlink: 16 bytes leftover after parsing attributes in process `syz-executor4'. binder_alloc: 5874: binder_alloc_buf, no vma binder: 5874:5879 transaction failed 29189/-3, size 80-0 line 2903 binder: 5874:5892 BC_FREE_BUFFER uffffffffffffffff no match netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. binder: BINDER_SET_CONTEXT_MGR already set binder: 5874:5898 ioctl 40046207 0 returned -16 netlink: 16 bytes leftover after parsing attributes in process `syz-executor4'. binder_alloc: 5874: binder_alloc_buf, no vma binder: 5874:5898 transaction failed 29189/-3, size 80-0 line 2903 netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 sctp: [Deprecated]: syz-executor4 (pid 6032) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor4 (pid 6038) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead netlink: 'syz-executor1': attribute type 1 has an invalid length. netlink: 'syz-executor1': attribute type 1 has an invalid length. netlink: 'syz-executor1': attribute type 1 has an invalid length. netlink: 'syz-executor1': attribute type 1 has an invalid length.