============================= 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/u4:2/27: #0: ((wq_completion)"%s""netns"){+.+.}, at: [<00000000cbc63f71>] process_one_work+0x71f/0x14a0 kernel/workqueue.c:2083 #1: (net_cleanup_work){+.+.}, at: [<000000001bf86975>] process_one_work+0x757/0x14a0 kernel/workqueue.c:2087 #2: (net_mutex){+.+.}, at: [<00000000d1979f3d>] cleanup_net+0x139/0x8b0 net/core/net_namespace.c:450 stack backtrace: CPU: 0 PID: 27 Comm: kworker/u4:2 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 ptrace attach of "/root/syz-executor7"[3660] was attempted by "/root/syz-executor7"[18836] ptrace attach of "/root/syz-executor7"[3660] was attempted by "/root/syz-executor7"[18849] device syz2 entered promiscuous mode netlink: 48 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 48 bytes leftover after parsing attributes in process `syz-executor2'. APIC base relocation is unsupported by KVM binder: 19010:19020 BC_CLEAR_DEATH_NOTIFICATION death notification not active binder: 19010:19020 got new transaction with bad transaction stack, transaction 115 has target 19010:0 binder: 19010:19020 transaction failed 29201/-71, size 0-8 line 2872 binder_alloc: binder_alloc_mmap_handler: 19010 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 19010:19020 ioctl 40046207 0 returned -16 binder_alloc: 19010: binder_alloc_buf, no vma binder: 19010:19020 transaction failed 29189/-3, size 80-16 line 2960 binder: 19010:19031 BC_CLEAR_DEATH_NOTIFICATION invalid ref 2 binder_alloc: 19010: binder_alloc_buf, no vma binder: 19010:19031 transaction failed 29189/-3, size 0-8 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 19010:19020 transaction 115 out, still active binder: unexpected work type, 4, not freed binder: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: send failed reply for transaction 115, target dead FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kvm: apic: phys broadcast and lowest prio CPU: 1 PID: 19412 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 mm/slab.c:3365 [inline] kmem_cache_alloc+0x47/0x760 mm/slab.c:3539 ptlock_alloc+0x24/0x70 mm/memory.c:4696 ptlock_init include/linux/mm.h:1796 [inline] pgtable_page_ctor include/linux/mm.h:1830 [inline] pte_alloc_one+0x59/0x100 arch/x86/mm/pgtable.c:32 do_huge_pmd_anonymous_page+0xacb/0x1650 mm/huge_memory.c:689 create_huge_pmd mm/memory.c:3838 [inline] __handle_mm_fault+0x1461/0x3210 mm/memory.c:4042 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+0x4c/0x60 arch/x86/entry/entry_64.S:1243 RIP: 0033:0x40180b RSP: 002b:00007f4d15e58b90 EFLAGS: 00010246 RAX: 0000000020000000 RBX: 0000000000000036 RCX: 0000000000000000 RDX: ddafa1f8233afb0d RSI: 0000000000000000 RDI: 00007f4d15e59608 RBP: 00000000202eefa2 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000036 R11: 0000000000000000 R12: 00000000006f68c0 R13: 0000000000000013 R14: 00007f4d15e596d4 R15: ffffffffffffffff oom_reaper: reaped process 19412 (syz-executor2), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB kvm_pmu: event creation failed -2 dccp_invalid_packet: P.Data Offset(66) too large dccp_invalid_packet: P.Data Offset(66) too large netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. kauditd_printk_skb: 101 callbacks suppressed audit: type=1326 audit(1514913294.651:2553): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.651:2554): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.657:2555): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=94 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.657:2556): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 pit: kvm: requested 5866 ns i8254 timer period limited to 500000 ns audit: type=1326 audit(1514913294.657:2557): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 pit: kvm: requested 5866 ns i8254 timer period limited to 500000 ns audit: type=1326 audit(1514913294.683:2558): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=133 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.683:2559): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.683:2560): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.684:2561): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=29 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913294.684:2562): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=19659 comm="syz-executor3" exe="/root/syz-executor3" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 ICMPv6: NA: bb:bb:bb:bb:bb:05 advertised our address fe80::5aa on syz5! netlink: 68 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 68 bytes leftover after parsing attributes in process `syz-executor3'. binder: 19840:19845 Acquire 1 refcount change on invalid ref 0 ret -22 openvswitch: netlink: Message has 6 unknown bytes. openvswitch: netlink: Message has 6 unknown bytes. binder: 20253:20263 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 20253:20263 Acquire 1 refcount change on invalid ref 0 ret -22 netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. binder: 20253:20269 Release 1 refcount change on invalid ref 0 ret -22 binder: 20253:20284 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 20253:20269 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 20253:20284 Release 1 refcount change on invalid ref 0 ret -22 encrypted_key: master key parameter '01Ÿù¡U' is invalid encrypted_key: master key parameter '01Ÿù¡U' is invalid IPVS: length: 260 != 24 QAT: Invalid ioctl QAT: Invalid ioctl binder: BINDER_SET_CONTEXT_MGR already set binder: 20565:20568 ioctl 40046207 0 returned -16 binder_alloc: 20565: binder_alloc_buf, no vma binder: 20565:20568 transaction failed 29189/-3, size 24-8 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 20565:20568 transaction 124 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 124, target dead 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 binder_alloc: 20707: binder_alloc_buf failed to map page at 20000000 in userspace binder: 20707:20712 transaction failed 29201/-12, size 0-0 line 2960 binder: BINDER_SET_CONTEXT_MGR already set binder: 20707:20712 ioctl 40046207 0 returned -16 binder_alloc: 20707: binder_alloc_buf, no vma binder: 20707:20712 transaction failed 29189/-3, size 0-0 line 2960 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 9pnet_virtio: no channels available for device ./file0 9pnet_virtio: no channels available for device ./file0 netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. kauditd_printk_skb: 72 callbacks suppressed audit: type=1326 audit(1514913299.783:2635): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.783:2636): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=257 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.785:2637): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.787:2638): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.788:2639): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=16 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.789:2640): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.800:2641): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=90 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.810:2642): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.811:2643): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452ac9 code=0x7ffc0000 audit: type=1326 audit(1514913299.818:2644): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=20819 comm="syz-executor1" exe="/root/syz-executor1" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452ac9 code=0x7ffc0000 netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 9 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 9 bytes leftover after parsing attributes in process `syz-executor1'.