============================= 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/u4:0/5: #0: ((wq_completion)"%s""netns"){+.+.}, at: [<0000000069efe2ca>] process_one_work+0x71f/0x14a0 kernel/workqueue.c:2083 #1: (net_cleanup_work){+.+.}, at: [<00000000d1cdd7cc>] process_one_work+0x757/0x14a0 kernel/workqueue.c:2087 #2: (net_mutex){+.+.}, at: [<000000002eed075d>] cleanup_net+0x139/0x8b0 net/core/net_namespace.c:450 stack backtrace: CPU: 1 PID: 5 Comm: kworker/u4:0 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 sctp: [Deprecated]: syz-executor7 (pid 22668) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor7 (pid 22693) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead binder: 22719:22724 ioctl c0306201 2000afd0 returned -14 binder: 22719:22733 ioctl c0306201 2000afd0 returned -14 tmpfs: No value for mount option 'ú' QAT: Invalid ioctl tmpfs: No value for mount option 'ú' QAT: Invalid ioctl irq bypass consumer (token 00000000705935b1) registration fails: -16 ptrace attach of "/root/syz-executor7"[3696] was attempted by "/root/syz-executor7"[22946] binder: 22959:22969 DecRefs 0 refcount change on invalid ref 0 ret -22 binder: 22959:22969 got new transaction with bad transaction stack, transaction 107 has target 22959:0 binder: 22959:22969 transaction failed 29201/-71, size 0-0 line 2872 binder: BINDER_SET_CONTEXT_MGR already set binder: 22959:22991 ioctl 40046207 0 returned -16 binder_alloc: 22959: binder_alloc_buf, no vma binder: 22959:22969 transaction failed 29189/-3, size 80-8 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 22959:22969 transaction 107 out, still active binder: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: send failed reply for transaction 107, target dead QAT: Invalid ioctl QAT: Invalid ioctl device syz2 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35 sclass=netlink_route_socket pig=23234 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35 sclass=netlink_route_socket pig=23264 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=35 sclass=netlink_route_socket pig=23284 comm=syz-executor5 kauditd_printk_skb: 81 callbacks suppressed audit: type=1326 audit(1514913060.712:1987): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23456 comm="syz-executor1" exe="/root/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x0 audit: type=1326 audit(1514913060.819:1988): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23456 comm="syz-executor1" exe="/root/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 23620 Comm: syz-executor5 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+0x56/0x760 mm/slab.c:3629 __alloc_skb+0xba/0x5a0 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1180 [inline] netlink_sendmsg+0x8ca/0xc40 net/netlink/af_netlink.c:1872 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] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x550/0x740 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xd4/0x1a0 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x23/0x9a RIP: 0033:0x452ac9 RSP: 002b:00007fadc1dc4c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fadc1dc4aa0 RCX: 0000000000452ac9 RDX: 0000000000000026 RSI: 0000000020f7f000 RDI: 0000000000000013 RBP: 00007fadc1dc4a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b767a R13: 00007fadc1dc4bc8 R14: 00000000004b767a R15: 0000000000000000 irq bypass consumer (token 00000000c4f24fd5) registration fails: -16 audit: type=1326 audit(1514913061.591:1989): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.591:1990): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=257 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.592:1991): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.592:1992): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=16 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.592:1993): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.593:1994): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=16 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.593:1995): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913061.594:1996): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=23628 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=c000003e syscall=288 compat=0 ip=0x452ac9 code=0x7ffc0000 binder: 24013:24025 unknown command 0 binder: 24013:24025 ioctl c0306201 2000a000 returned -22 binder: 24013:24033 got transaction with invalid handle, -1 binder: 24013:24033 transaction failed 29201/-22, size 56-8 line 3052 binder_alloc: binder_alloc_mmap_handler: 24013 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 24013:24033 ioctl 40046207 0 returned -16 binder: 24013:24041 unknown command 0 binder: 24013:24041 ioctl c0306201 2000a000 returned -22 binder_alloc: 24013: binder_alloc_buf, no vma binder: 24013:24041 transaction failed 29189/-3, size 56-8 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 device syz7 entered promiscuous mode binder: 24270:24277 IncRefs 0 refcount change on invalid ref 0 ret -22 binder: 24270:24283 IncRefs 0 refcount change on invalid ref 0 ret -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 24321:24326 ioctl 40046207 0 returned -16 binder_alloc: 24321: binder_alloc_buf, no vma binder: 24321:24326 transaction failed 29189/-3, size 0-0 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 24321:24326 transaction 118 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 118, target dead snd_dummy snd_dummy.0: control 120:0:0:Î:0 is already present snd_dummy snd_dummy.0: control 120:0:0:Î:0 is already present netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. device syz1 entered promiscuous mode sock: process `syz-executor4' is using obsolete setsockopt SO_BSDCOMPAT kauditd_printk_skb: 42 callbacks suppressed audit: type=1326 audit(1514913065.755:2038): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 audit: type=1326 audit(1514913065.755:2039): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=330 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2040): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2041): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=329 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2042): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2043): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=199 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2044): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2045): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2046): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913065.756:2047): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=24807 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=317 compat=0 ip=0x452ac9 code=0x7ffc0000 binder: 24866:24873 ERROR: BC_REGISTER_LOOPER called without request binder: 24873 RLIMIT_NICE not set binder: 24866:24882 got reply transaction with bad transaction stack, transaction 121 has target 24866:0 binder: 24866:24882 transaction failed 29201/-71, size 0-8 line 2775 binder: BINDER_SET_CONTEXT_MGR already set binder: 24866:24882 ioctl 40046207 0 returned -16 binder: 24866:24906 ERROR: BC_REGISTER_LOOPER called without request binder: 24906 RLIMIT_NICE not set binder: 24866:24882 unknown command 76 binder: 24866:24882 ioctl c0306201 2000a000 returned -22 binder: 24866:24906 got reply transaction with no transaction stack binder: 24866:24906 transaction failed 29201/-71, size 0-8 line 2760 binder: 24873 RLIMIT_NICE not set binder: release 24866:24873 transaction 121 in, still active binder: send failed reply for transaction 121 to 24866:24882 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201