RBP: 00007f4739100a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b767a R13: 00007f4739100bc8 R14: 00000000004b767a R15: 0000000000000000 ============================= 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/u4:1/21: #0: ((wq_completion)"%s""netns"){+.+.}, at: [<00000000e200c6c3>] process_one_work+0x71f/0x14a0 kernel/workqueue.c:2083 #1: (net_cleanup_work){+.+.}, at: [<000000004a87c817>] process_one_work+0x757/0x14a0 kernel/workqueue.c:2087 #2: (net_mutex){+.+.}, at: [<000000009891cb52>] cleanup_net+0x139/0x8b0 net/core/net_namespace.c:450 stack backtrace: CPU: 0 PID: 21 Comm: kworker/u4:1 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 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 audit: type=1326 audit(1514913421.687:107): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5275 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913421.687:108): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5275 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=63 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913421.692:109): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5275 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 CPU: 1 PID: 5283 Comm: syz-executor2 Not tainted 4.15.0-rc6-next-20180102+ #86 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+0x137/0x198 lib/dump_stack.c:53 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x4d4/0x580 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:422 [inline] slab_alloc_node mm/slab.c:3286 [inline] kmem_cache_alloc_node_trace+0x5a/0x750 mm/slab.c:3648 __do_kmalloc_node mm/slab.c:3668 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3683 __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 __alloc_skb+0xf0/0x5a0 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:983 [inline] nlmsg_new include/net/netlink.h:511 [inline] netlink_ack+0x283/0x9b0 net/netlink/af_netlink.c:2376 netlink_rcv_skb+0x368/0x460 net/netlink/af_netlink.c:2447 nfnetlink_rcv+0x1e0/0x1640 net/netfilter/nfnetlink.c:515 netlink_unicast_kernel net/netlink/af_netlink.c:1308 [inline] netlink_unicast+0x4fd/0x700 net/netlink/af_netlink.c:1334 netlink_sendmsg+0x88e/0xc40 net/netlink/af_netlink.c:1897 sock_sendmsg_nosec net/socket.c:628 [inline] sock_sendmsg+0xca/0x110 net/socket.c:638 sock_write_iter+0x21d/0x3a0 net/socket.c:907 call_write_iter include/linux/fs.h:1775 [inline] do_iter_readv_writev+0x3a9/0x5b0 fs/read_write.c:653 do_iter_write+0x154/0x540 fs/read_write.c:932 vfs_writev+0x158/0x2d0 fs/read_write.c:977 do_writev+0xe1/0x240 fs/read_write.c:1012 SYSC_writev fs/read_write.c:1085 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1082 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007f4739100c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f4739100aa0 RCX: 0000000000452ac9 RDX: 0000000000000001 RSI: 000000002037d000 RDI: 0000000000000013 RBP: 00007f4739100a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b767a R13: 00007f4739100bc8 R14: 00000000004b767a R15: 0000000000000000 device gretap0 entered promiscuous mode RDS: rds_bind could not find a transport for 172.20.4.170, load rds_tcp or rds_rdma? sg_write: data in/out 1979411416/1 bytes for SCSI command 0x96-- guessing data in; program syz-executor3 not setting count and/or reply_len properly RDS: rds_bind could not find a transport for 172.20.4.170, load rds_tcp or rds_rdma? sg_write: data in/out 1979411416/1 bytes for SCSI command 0x96-- guessing data in; program syz-executor3 not setting count and/or reply_len properly netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. device lo entered promiscuous mode device lo left promiscuous mode kauditd_printk_skb: 50 callbacks suppressed audit: type=1400 audit(1514913424.110:159): avc: denied { create } for pid=5788 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_scsitransport_socket permissive=1 audit: type=1326 audit(1514913424.187:160): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5786 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913424.187:161): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5786 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 device lo entered promiscuous mode openvswitch: netlink: Key type 1795 is out of range max 29 openvswitch: netlink: Key type 1795 is out of range max 29 audit: type=1400 audit(1514913424.371:162): avc: denied { ipc_lock } for pid=5878 comm="syz-executor4" capability=14 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 ptrace attach of "/root/syz-executor2"[3697] was attempted by "/root/syz-executor2"[5900] netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'. openvswitch: netlink: Message has 1 unknown bytes. audit: type=1326 audit(1514913424.527:163): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5901 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 ptrace attach of "/root/syz-executor2"[3697] was attempted by "/root/syz-executor2"[5900] netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'. openvswitch: netlink: Message has 1 unknown bytes. audit: type=1326 audit(1514913424.527:164): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5901 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913424.556:165): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5901 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=43 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913424.557:166): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5901 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913424.557:167): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5901 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 QAT: Invalid ioctl irq bypass consumer (token 0000000096b4964b) registration fails: -16 QAT: Invalid ioctl audit: type=1326 audit(1514913424.558:168): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=5901 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=16 compat=0 ip=0x452ac9 code=0x7ffc0000 netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 'syz-executor3': attribute type 1 has an invalid length. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. QAT: Invalid ioctl QAT: Invalid ioctl netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. TCP: request_sock_TCP: Possible SYN flooding on port 20026. Sending cookies. Check SNMP counters. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. QAT: Invalid ioctl QAT: Invalid ioctl capability: warning: `syz-executor6' uses deprecated v2 capabilities in a way that may be insecure QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1280 sclass=netlink_route_socket pig=6452 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1280 sclass=netlink_route_socket pig=6460 comm=syz-executor0 QAT: Invalid ioctl QAT: Invalid ioctl device syz1 entered promiscuous mode device eql entered promiscuous mode IPVS: length: 260 != 24 syz-executor1 (6678): /proc/6671/oom_adj is deprecated, please use /proc/6671/oom_score_adj instead. binder: BINDER_SET_CONTEXT_MGR already set binder: 6776:6780 ioctl 40046207 0 returned -16 binder: BINDER_SET_CONTEXT_MGR already set QAT: Invalid ioctl binder: BINDER_SET_CONTEXT_MGR already set binder: 6776:6792 ioctl 40046207 0 returned -16 binder: 6776:6801 ioctl 40046207 0 returned -16 QAT: Invalid ioctl netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. device eql entered promiscuous mode netlink: 'syz-executor3': attribute type 29 has an invalid length. netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 'syz-executor3': attribute type 29 has an invalid length. netlink: 5 bytes leftover after parsing attributes in process `syz-executor3'. DRBG: could not allocate CTR cipher TFM handle: ctr(aes) device gretap0 entered promiscuous mode kauditd_printk_skb: 198 callbacks suppressed audit: type=1400 audit(1514913429.233:367): avc: denied { ioctl } for pid=7129 comm="syz-executor2" path="socket:[22212]" dev="sockfs" ino=22212 ioctlcmd=0x8915 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=1326 audit(1514913429.352:368): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.353:369): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=281 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.353:370): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.353:371): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.355:372): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.357:373): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=257 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.358:374): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.358:375): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913429.378:376): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=7154 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=6 compat=0 ip=0x452ac9 code=0x7ffc0000 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 device syz0 entered promiscuous mode device syz0 left promiscuous mode device syz0 entered promiscuous mode netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. binder: 7408:7413 ERROR: BC_REGISTER_LOOPER called without request binder: 7413 RLIMIT_NICE not set binder: BINDER_SET_CONTEXT_MGR already set binder: 7408:7422 ioctl 40046207 0 returned -16 binder: 7408:7418 ERROR: BC_REGISTER_LOOPER called without request binder: 7418 RLIMIT_NICE not set device eql entered promiscuous mode SELinux: unrecognized netlink message: protocol=6 nlmsg_type=768 sclass=netlink_xfrm_socket pig=7592 comm=syz-executor2 ptrace attach of "/root/syz-executor0"[3698] was attempted by "/root/syz-executor0"[7602] SELinux: unrecognized netlink message: protocol=6 nlmsg_type=768 sclass=netlink_xfrm_socket pig=7592 comm=syz-executor2 ptrace attach of "/root/syz-executor0"[3698] was attempted by "/root/syz-executor0"[7605] netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. device syz0 entered promiscuous mode