============================= 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/u4:4/176: #0: ((wq_completion)"%s""netns"){+.+.}, at: [<00000000caaf24e5>] process_one_work+0x71f/0x14a0 kernel/workqueue.c:2083 #1: (net_cleanup_work){+.+.}, at: [<0000000055734362>] process_one_work+0x757/0x14a0 kernel/workqueue.c:2087 #2: (net_mutex){+.+.}, at: [<0000000007ad43e9>] cleanup_net+0x139/0x8b0 net/core/net_namespace.c:450 stack backtrace: CPU: 1 PID: 176 Comm: kworker/u4:4 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 binder: 6410:6412 got transaction with invalid offset (2, min 0 max 40) or object. binder: 6410:6412 transaction failed 29201/-22, size 40-8 line 3023 binder: BINDER_SET_CONTEXT_MGR already set binder: 6410:6412 ioctl 40046207 0 returned -16 binder_alloc: 6410: binder_alloc_buf, no vma binder: 6410:6421 transaction failed 29189/-3, size 40-8 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 mmap: syz-executor7 (6458) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl binder: 6736 RLIMIT_NICE not set binder: 6726:6748 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: 6726:6736 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 6736 RLIMIT_NICE not set binder: 6726:6757 BC_DEAD_BINDER_DONE 0000000000000000 not found IPv6: NLM_F_REPLACE set, but no existing node found! kauditd_printk_skb: 189 callbacks suppressed audit: type=1326 audit(1514913741.020:432): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.020:433): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.020:434): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=300 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.020:435): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.021:436): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.022:437): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.025:438): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=317 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.026:439): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913741.026:440): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6768 comm="syz-executor5" exe="/root/syz-executor5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 IPv6: NLM_F_REPLACE set, but no existing node found! audit: type=1326 audit(1514913741.060:441): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=6777 comm="syz-executor1" exe="/root/syz-executor1" sig=9 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x0 binder: undelivered death notification, 0000000000000000 sctp: [Deprecated]: syz-executor6 (pid 6795) Use of int in maxseg socket option. Use struct sctp_assoc_value instead mmap: syz-executor2 (6796): VmData 17313792 exceed data ulimit 129. Update limits or use boot option ignore_rlimit_data. sctp: [Deprecated]: syz-executor6 (pid 6800) Use of int in maxseg socket option. Use struct sctp_assoc_value instead device gre0 entered promiscuous mode device lo entered promiscuous mode binder: 6877:6884 ERROR: BC_REGISTER_LOOPER called without request binder: 6877:6884 Release 1 refcount change on invalid ref 0 ret -22 binder: 6877:6884 ERROR: BC_REGISTER_LOOPER called without request QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kvm: apic: phys broadcast and lowest prio QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl 9pnet_virtio: no channels available for device ./file0 device eql entered promiscuous mode 9pnet_virtio: no channels available for device ./file0 capability: warning: `syz-executor2' uses deprecated v2 capabilities in a way that may be insecure netlink: 'syz-executor0': attribute type 1 has an invalid length. kvm: vcpu 0: requested 10176 ns lapic timer period limited to 500000 ns netlink: 'syz-executor0': attribute type 1 has an invalid length. device gre0 entered promiscuous mode binder: 7461:7463 ioctl c0306201 20382000 returned -11 netlink: 188 bytes leftover after parsing attributes in process `syz-executor4'. binder: BINDER_SET_CONTEXT_MGR already set binder: 7461:7471 ioctl 40046207 0 returned -16 netlink: 'syz-executor0': attribute type 18 has an invalid length. device gre0 entered promiscuous mode binder: BINDER_SET_CONTEXT_MGR already set binder: 7647:7650 ioctl 40046207 0 returned -16 netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 'syz-executor0': attribute type 40 has an invalid length. binder: 7753 RLIMIT_NICE not set binder: 7753 RLIMIT_NICE not set netlink: 'syz-executor0': attribute type 40 has an invalid length. binder: 7751:7782 tried to acquire reference to desc 0, got 1 instead binder: 7751:7768 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: 7751:7782 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 7782 RLIMIT_NICE not set binder: 7782 RLIMIT_NICE not set binder: 7751:7753 ioctl c0306201 20006fd0 returned -14 binder: 7751:7768 ioctl c0306201 20006fd0 returned -14 binder: 7751:7782 ioctl c0306201 20007000 returned -14 binder: undelivered death notification, 0000000000000000 netlink: 25 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'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. handle_userfault: 116 callbacks suppressed FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 7852 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 handle_userfault+0x744/0x1750 fs/userfaultfd.c:430 do_anonymous_page mm/memory.c:3171 [inline] handle_pte_fault mm/memory.c:3945 [inline] __handle_mm_fault+0x2fc5/0x3210 mm/memory.c:4071 handle_mm_fault+0x305/0x840 mm/memory.c:4108 __do_page_fault+0x59e/0xca0 arch/x86/mm/fault.c:1429 do_page_fault+0x78/0x490 arch/x86/mm/fault.c:1504 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1243 RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline] RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421 RSP: 0018:ffff8801c223fa08 EFLAGS: 00010246 RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff821c64c1 RDX: 000000000000010c RSI: ffffc900025a1000 RDI: ffff8801c223fd30 RBP: ffff8801c223fae8 R08: ffff8801c1f9d1a0 R09: 0000000000000003 R10: ffff8801c223f978 R11: 0000000000000001 R12: 1ffff10038447f44 R13: ffff8801c223fac0 R14: 0000000000000000 R15: ffff8801c223fd28 generic_perform_write+0x195/0x4a0 mm/filemap.c:3128 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263 generic_file_write_iter+0x2f0/0x630 mm/filemap.c:3291 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:00007f083bc40c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: cccccccccccccccd RCX: 0000000000452ac9 RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000014 RBP: 00000000000005c5 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6b18 R13: 00000000ffffffff R14: 00007f083bc416d4 R15: 0000000000000000 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 7852 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 handle_userfault+0x744/0x1750 fs/userfaultfd.c:430 do_anonymous_page mm/memory.c:3171 [inline] handle_pte_fault mm/memory.c:3945 [inline] __handle_mm_fault+0x2fc5/0x3210 mm/memory.c:4071 handle_mm_fault+0x305/0x840 mm/memory.c:4108 __do_page_fault+0x59e/0xca0 arch/x86/mm/fault.c:1429 do_page_fault+0x78/0x490 arch/x86/mm/fault.c:1504 page_fault+0x2c/0x60 arch/x86/entry/entry_64.S:1243 RIP: 0010:fault_in_pages_readable include/linux/pagemap.h:601 [inline] RIP: 0010:iov_iter_fault_in_readable+0x1a7/0x410 lib/iov_iter.c:421 RSP: 0018:ffff8801c223fa08 EFLAGS: 00010246 RAX: 0000000000010000 RBX: 0000000020011fd2 RCX: ffffffff821c64c1 RDX: 0000000000000084 RSI: ffffc900025a1000 RDI: ffff8801c223fd30 RBP: ffff8801c223fae8 R08: 0000000000000000 R09: 0000000000000000 R10: ffff8801c223fbe0 R11: 0000000000000000 R12: 1ffff10038447f44 R13: ffff8801c223fac0 R14: 0000000000000000 R15: ffff8801c223fd28 generic_perform_write+0x195/0x4a0 mm/filemap.c:3128 __generic_file_write_iter+0x366/0x5b0 mm/filemap.c:3263 generic_file_write_iter+0x2f0/0x630 mm/filemap.c:3291 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:00007f083bc40c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9 RDX: 000000000000001c RSI: 0000000020011fd2 RDI: 0000000000000016 RBP: 00000000000005f6 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f6fb0 R13: 00000000ffffffff R14: 00007f083bc416d4 R15: 0000000000000000 dccp_v6_rcv: dropped packet with invalid checksum dccp_v6_rcv: dropped packet with invalid checksum netlink: 10 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 10 bytes leftover after parsing attributes in process `syz-executor4'. binder: 7993:7998 got transaction to invalid handle binder: 7993:7998 transaction failed 29201/-22, size 0-32 line 2845 binder: undelivered TRANSACTION_ERROR: 29201 device lo entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready audit: type=1326 audit(1514913747.747:558): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.775:559): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=257 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.775:560): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.777:561): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=16 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.777:562): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.777:563): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.778:564): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=49 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913747.778:565): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8186 comm="syz-executor4" exe="/root/syz-executor4" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 QAT: Invalid ioctl SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14 sclass=netlink_route_socket pig=8279 comm=syz-executor2 QAT: Invalid ioctl SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14 sclass=netlink_route_socket pig=8279 comm=syz-executor2 binder_alloc: binder_alloc_mmap_handler: 8331 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 8331:8335 ioctl 40046207 0 returned -16 binder_alloc: 8331: binder_alloc_buf, no vma binder: 8331:8335 transaction failed 29189/-3, size 40-8 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 8331:8335 transaction 35 out, still active binder: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 35, target dead binder: 8410:8417 BC_ACQUIRE_DONE node 39 has no pending acquire request binder: 8410:8438 BC_ACQUIRE_DONE u0000000000000000 no match Disabled LAPIC found during irq injection Disabled LAPIC found during irq injection