============================= 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/u4:3/74: #0: ((wq_completion)"%s""netns"){+.+.}, at: [<0000000040eed8a3>] process_one_work+0x71f/0x14a0 kernel/workqueue.c:2083 #1: (net_cleanup_work){+.+.}, at: [<00000000315c3d18>] process_one_work+0x757/0x14a0 kernel/workqueue.c:2087 #2: (net_mutex){+.+.}, at: [<00000000f606c508>] cleanup_net+0x139/0x8b0 net/core/net_namespace.c:450 stack backtrace: CPU: 1 PID: 74 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 netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. SELinux: unrecognized netlink message: protocol=4 nlmsg_type=1047 sclass=netlink_tcpdiag_socket pig=13830 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=1047 sclass=netlink_tcpdiag_socket pig=13832 comm=syz-executor7 netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor6'. binder: 13975:13977 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 13975:13983 Release 1 refcount change on invalid ref 0 ret -22 kauditd_printk_skb: 171 callbacks suppressed audit: type=1400 audit(1514913066.742:1251): avc: denied { setuid } for pid=13992 comm="syz-executor0" capability=7 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(1514913066.862:1252): avc: denied { connect } for pid=14031 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_fib_lookup_socket permissive=1 QAT: Invalid ioctl QAT: Invalid ioctl netlink: 68 bytes leftover after parsing attributes in process `syz-executor1'. device eql entered promiscuous mode netlink: 68 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 188 bytes leftover after parsing attributes in process `syz-executor2'. QAT: Invalid ioctl QAT: Invalid ioctl binder: 14315:14319 ioctl c0306201 20008fd0 returned -11 binder: BINDER_SET_CONTEXT_MGR already set binder: 14315:14319 ioctl 40046207 0 returned -16 device syz1 entered promiscuous mode device syz1 entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl rpcbind: RPC call returned error 22 dccp_invalid_packet: P.Data Offset(66) too large dccp_invalid_packet: P.Data Offset(66) too large device gre0 entered promiscuous mode binder: BINDER_SET_CONTEXT_MGR already set binder: 14590:14593 ioctl 40046207 0 returned -16 ICMPv6: NA: bb:bb:bb:bb:bb:04 advertised our address fe80::4aa on syz4! ICMPv6: NA: bb:bb:bb:bb:bb:04 advertised our address fe80::4aa on syz4! audit: type=1326 audit(1514913069.615:1253): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14669 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 device syz6 entered promiscuous mode audit: type=1326 audit(1514913069.657:1255): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14669 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913069.658:1256): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14669 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913069.642:1254): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14669 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=108 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913069.660:1257): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14669 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913069.660:1258): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14669 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=256 sclass=netlink_route_socket pig=14727 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=256 sclass=netlink_route_socket pig=14735 comm=syz-executor3 audit: type=1326 audit(1514913070.194:1259): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14785 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913070.221:1260): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=14785 comm="syz-executor2" exe="/root/syz-executor2" sig=0 arch=c000003e syscall=257 compat=0 ip=0x452ac9 code=0x7ffc0000 binder: 14945:14959 IncRefs 0 refcount change on invalid ref 0 ret -22 QAT: Invalid ioctl QAT: Invalid ioctl binder: 14992:15000 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 14992:15000 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder_alloc: 14992: binder_alloc_buf, no vma binder: 14992:15000 transaction failed 29189/-3, size 0-0 line 2960 binder: 14992:15008 Release 1 refcount change on invalid ref 0 ret -22 binder: 14992:15008 got reply transaction with no transaction stack binder: 14992:15008 transaction failed 29201/-71, size 0-0 line 2760 binder: 14992:15008 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: BINDER_SET_CONTEXT_MGR already set binder: 14992:15009 ioctl 40046207 0 returned -16 binder_alloc: 14992: binder_alloc_buf, no vma binder: 14992:15011 transaction failed 29189/-3, size 0-0 line 2960 binder: 14992:15011 Release 1 refcount change on invalid ref 0 ret -22 binder: 14992:15011 got reply transaction with no transaction stack binder: 14992:15011 transaction failed 29201/-71, size 0-0 line 2760 QAT: Invalid ioctl QAT: Invalid ioctl binder: 15107:15116 ioctl 80404506 20000f6f returned -22 dccp_invalid_packet: P.Data Offset(120) too large dccp_invalid_packet: P.Data Offset(120) too large binder: 15107:15116 ioctl 8903 20003000 returned -22 binder: 15107:15112 ioctl 8980 20006fee returned -22 binder: 15107:15116 ioctl c208ae62 20008000 returned -22 device eql entered promiscuous mode binder: 15166:15179 got transaction with invalid offset (2, min 0 max 40) or object. binder: 15166:15179 transaction failed 29201/-22, size 40-8 line 3023 binder: BINDER_SET_CONTEXT_MGR already set binder: 15166:15179 ioctl 40046207 0 returned -16 binder: undelivered TRANSACTION_ERROR: 29201 kauditd_printk_skb: 28 callbacks suppressed audit: type=1326 audit(1514913072.214:1289): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.214:1290): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.220:1291): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=117 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.220:1292): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.221:1293): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.248:1294): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=53 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.248:1295): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.249:1296): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.251:1297): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=47 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913072.278:1298): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=15256 comm="syz-executor7" exe="/root/syz-executor7" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 40 bytes leftover after parsing attributes in process `syz-executor1'. binder: BINDER_SET_CONTEXT_MGR already set binder: 15950:15962 ioctl 40046207 0 returned -16 dccp_v4_rcv: dropped packet with invalid checksum