BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/9020 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 1 PID: 9020 Comm: syz-executor0 Not tainted 4.4.113-g962d1f3 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 c4b61e75f3944546 ffff8801d3dff800 ffffffff81d028ed 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8800b5b78000 0000000000000003 ffff8801d3dff840 ffffffff81d62834 ffffffff810002b8 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46 [] ? 0xffffffff810002b8 [] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 [] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278 [] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485 [] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531 [] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134 [] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec net/socket.c:625 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:635 [] SYSC_sendto+0x2c8/0x340 net/socket.c:1665 [] SyS_sendto+0x40/0x50 net/socket.c:1633 [] entry_SYSCALL_64_fastpath+0x1c/0x98 binder: 9070:9081 BC_REQUEST_DEATH_NOTIFICATION invalid ref -8 binder: BINDER_SET_CONTEXT_MGR already set binder: 9070:9092 ioctl 40046207 0 returned -16 binder: 9070:9081 BC_REQUEST_DEATH_NOTIFICATION invalid ref -8 binder: 9070:9092 Release 1 refcount change on invalid ref 0 ret -22 binder: 9070:9081 unknown command 0 binder: 9070:9081 ioctl c0306201 20007000 returned -22 TCP: request_sock_TCPv6: Possible SYN flooding on port 20010. Sending cookies. Check SNMP counters. binder_alloc: binder_alloc_mmap_handler: 9408 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 9408:9414 ioctl 40046207 0 returned -16 binder_alloc: 9408: binder_alloc_buf, no vma binder: 9408:9414 transaction failed 29189/-3, size 80-16 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 9408:9414 transaction 67 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 67, target dead audit: type=1400 audit(1517387938.421:30): avc: denied { create } for pid=9530 comm="syz-executor6" 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=1400 audit(1517387938.481:31): avc: denied { write } for pid=9530 comm="syz-executor6" 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=1400 audit(1517387938.751:32): avc: denied { create } for pid=9604 comm="syz-executor6" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 binder: 9638:9640 ERROR: BC_REGISTER_LOOPER called without request binder: 9638:9672 ERROR: BC_REGISTER_LOOPER called without request binder: 9744:9745 ioctl 40046205 5 returned -22 binder: 9744:9760 ioctl 40046205 5 returned -22 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket audit: type=1400 audit(1517387940.001:33): avc: denied { create } for pid=9962 comm="syz-executor5" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_crypto_socket permissive=1 program syz-executor3 is using a deprecated SCSI ioctl, please convert it to SG_IO SELinux: policydb string length 65224 does not match expected length 8 sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 program syz-executor3 is using a deprecated SCSI ioctl, please convert it to SG_IO sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0 audit: type=1400 audit(1517387940.271:34): avc: denied { setopt } for pid=10032 comm="syz-executor1" 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 SELinux: policydb string length 65224 does not match expected length 8 IPv4: Oversized IP packet from 172.20.5.15 audit: type=1400 audit(1517387940.861:35): avc: denied { set_context_mgr } for pid=10178 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 binder: 10178:10206 BC_FREE_BUFFER u0000000020000000 no match audit: type=1400 audit(1517387940.951:36): avc: denied { call } for pid=10178 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=binder permissive=1 binder_alloc: 10178: binder_alloc_buf, no vma binder: BINDER_SET_CONTEXT_MGR already set binder: 10178:10215 ioctl 40046207 0 returned -16 binder: 10178:10206 BC_FREE_BUFFER u0000000020000000 no match binder_alloc: 10178: binder_alloc_buf, no vma binder: 10178:10183 transaction failed 29189/-3, size 0-0 line 3128 binder: 10178:10193 transaction failed 29189/-3, size 0-0 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29189 audit: type=1400 audit(1517387941.671:37): avc: denied { write } for pid=10381 comm="syz-executor4" path="socket:[18161]" dev="sockfs" ino=18161 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'.