============================= WARNING: suspicious RCU usage 4.15.0-rc6-next-20180102+ #86 Not tainted ----------------------------- net/netfilter/ipset/ip_set_core.c:2057 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by kworker/u4:3/103: #0: ((wq_completion)"%s""netns"){+.+.}, at: [<0000000056ec265c>] process_one_work+0x71f/0x14a0 kernel/workqueue.c:2083 #1: (net_cleanup_work){+.+.}, at: [<00000000b7348ad7>] process_one_work+0x757/0x14a0 kernel/workqueue.c:2087 #2: (net_mutex){+.+.}, at: [<00000000a980c941>] cleanup_net+0x139/0x8b0 net/core/net_namespace.c:450 stack backtrace: CPU: 0 PID: 103 Comm: kworker/u4:3 Not tainted 4.15.0-rc6-next-20180102+ #86 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x137/0x198 lib/dump_stack.c:53 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4585 ip_set_net_exit+0x2c6/0x480 net/netfilter/ipset/ip_set_core.c:2057 ops_exit_list.isra.6+0xae/0x150 net/core/net_namespace.c:142 cleanup_net+0x3f3/0x8b0 net/core/net_namespace.c:484 process_one_work+0x801/0x14a0 kernel/workqueue.c:2112 worker_thread+0xe0/0x1010 kernel/workqueue.c:2246 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:524 kauditd_printk_skb: 219 callbacks suppressed audit: type=1326 audit(1514913399.994:1394): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913399.996:1395): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913399.997:1396): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=20 compat=0 ip=0x4529a1 code=0x7ffc0000 audit: type=1326 audit(1514913399.997:1397): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913399.998:1398): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913400.004:1399): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=33 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913400.004:1400): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913400.004:1401): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913400.005:1402): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=41 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913400.005:1403): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14705 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 netlink: 'syz-executor3': attribute type 16 has an invalid length. sctp: [Deprecated]: syz-executor5 (pid 15279) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor5 (pid 15293) Use of int in maxseg socket option. Use struct sctp_assoc_value instead l2tp_core: tunl 79: sockfd_lookup(fd=14609257) returned -9 l2tp_core: tunl 79: sockfd_lookup(fd=14609257) returned -9 ptrace attach of "/root/syz-executor4"[3694] was attempted by "/root/syz-executor4"[15330] device eql entered promiscuous mode nla_parse: 9 callbacks suppressed netlink: 10 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 10 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 10 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 10 bytes leftover after parsing attributes in process `syz-executor5'. binder: 15453 RLIMIT_NICE not set binder: 15448:15453 ERROR: BC_REGISTER_LOOPER called after BC_ENTER_LOOPER binder: 15453 RLIMIT_NICE not set binder: 15453 RLIMIT_NICE not set binder: 15448:15454 ERROR: BC_REGISTER_LOOPER called without request binder: 15453 RLIMIT_NICE not set binder: undelivered death notification, 0000000000000000 binder: undelivered death notification, 0000000000000000 device lo entered promiscuous mode device gre0 entered promiscuous mode ptrace attach of "/root/syz-executor7"[3692] was attempted by "/root/syz-executor7"[15597] device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. irq bypass consumer (token 00000000e9e2d523) registration fails: -16 device syz7 entered promiscuous mode device eql entered promiscuous mode netlink: 'syz-executor2': attribute type 2 has an invalid length. netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 'syz-executor2': attribute type 2 has an invalid length. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=33 sclass=netlink_audit_socket pig=16167 comm=syz-executor2 kauditd_printk_skb: 95 callbacks suppressed audit: type=1326 audit(1514913406.164:1499): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=33 sclass=netlink_audit_socket pig=16182 comm=syz-executor2 audit: type=1326 audit(1514913406.175:1500): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=2 compat=0 ip=0x40ce01 code=0x7ffc0000 audit: type=1326 audit(1514913406.182:1501): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.184:1502): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=49 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.185:1503): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.185:1504): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=53 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.233:1505): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.233:1506): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.240:1507): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=317 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913406.241:1508): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=16158 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 QAT: Invalid ioctl QAT: Invalid ioctl binder: 16350:16354 Release 1 refcount change on invalid ref 2 ret -22 binder: 16350:16354 got reply transaction with no transaction stack binder: 16350:16354 transaction failed 29201/-71, size 0-24 line 2760 binder: 16350:16354 Release 1 refcount change on invalid ref 2 ret -22 binder: 16350:16354 got reply transaction with no transaction stack binder: 16350:16354 transaction failed 29201/-71, size 0-24 line 2760 rpcbind: RPC call returned error 22 rpcbind: RPC call returned error 22 netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'. device syz5 entered promiscuous mode