BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor2/12687 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 0 PID: 12687 Comm: syz-executor2 Not tainted 4.4.113-g962d1f3 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 291396b79d30fddd ffff8800b14bf800 ffffffff81d028ed 0000000000000000 ffffffff839fe3a0 ffffffff83cef6a0 ffff8800b205c740 0000000000000003 ffff8800b14bf840 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 device gre0 entered promiscuous mode program syz-executor6 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 program syz-executor6 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 sock: sock_set_timeout: `syz-executor7' (pid 12828) tries to set negative timeout sock: sock_set_timeout: `syz-executor7' (pid 12828) tries to set negative timeout binder: 12837:12840 got reply transaction with no transaction stack IPVS: set_ctl: invalid protocol: 31912 1.136.255.255:0 0}Y#`}Əg binder: 12837:12840 transaction failed 29201/-71, size 72-40 line 2921 IPVS: set_ctl: invalid protocol: 31912 1.136.255.255:0 Ox binder: 12837:12857 BC_DEAD_BINDER_DONE 0000000000000000 not found binder: 12837:12857 got reply transaction with no transaction stack binder: 12837:12857 transaction failed 29201/-71, size 72-40 line 2921 binder: 12837:12862 BC_DEAD_BINDER_DONE 0000000000000000 not found TCP: request_sock_TCPv6: Possible SYN flooding on port 20018. Sending cookies. Check SNMP counters. sg_write: data in/out 524252/24 bytes for SCSI command 0x0-- guessing data in; program syz-executor5 not setting count and/or reply_len properly 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'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20010. Sending cookies. Check SNMP counters. binder: 13484:13498 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 audit: type=1400 audit(1517377113.505:46): avc: denied { getattr } for pid=13568 comm="syz-executor2" name="NETLINK" dev="sockfs" ino=23159 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: 13753:13758 transaction failed 29189/-22, size 0-0 line 3005 binder: undelivered TRANSACTION_ERROR: 29189 device lo entered promiscuous mode binder: 13846:13852 got transaction with invalid offset (32, min 0 max 40) or object. binder: 13846:13852 transaction failed 29201/-22, size 40-8 line 3191 l2tp_core: tunl 59: sockfd_lookup(fd=0) returned -88 binder_alloc: binder_alloc_mmap_handler: 13846 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 13846:13852 ioctl 40046207 0 returned -16 binder_alloc: 13846: binder_alloc_buf, no vma binder: 13846:13881 transaction failed 29189/-3, size 40-8 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. audit: type=1400 audit(1517377115.215:47): avc: denied { create } for pid=14015 comm="syz-executor7" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_iscsi_socket permissive=1 binder_alloc: binder_alloc_mmap_handler: 14159 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 14159:14164 ioctl 40046207 0 returned -16 binder_alloc: 14159: binder_alloc_buf, no vma binder: 14159:14192 transaction failed 29189/-3, size 80-8 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 14159:14164 transaction 118 out, still active binder: unexpected work type, 4, not freed binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 118, target dead binder: undelivered transaction 121, process died. device syz4 entered promiscuous mode device syz4 left promiscuous mode netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 9 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 9 bytes leftover after parsing attributes in process `syz-executor3'. audit: type=1400 audit(1517377116.825:48): avc: denied { setopt } for pid=14375 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 netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20026. Sending cookies. Check SNMP counters.