BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor6/7740
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 7740 Comm: syz-executor6 Not tainted 4.4.113-g962d1f3 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 11dbb12ef41dd2f4 ffff8800b5437800 ffffffff81d028ed
 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801d30697c0
 0000000000000003 ffff8800b5437840 ffffffff81d62834 ffffffff810002b8
Call Trace:
 [<ffffffff81d028ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d028ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81d62834>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff810002b8>] ? 0xffffffff810002b8
 [<ffffffff81d6289c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff831289d9>] tcp_try_coalesce+0x249/0x4d0 net/ipv4/tcp_input.c:4278
 [<ffffffff83130b57>] tcp_queue_rcv+0x127/0x720 net/ipv4/tcp_input.c:4485
 [<ffffffff8314842b>] tcp_send_rcvq+0x39b/0x450 net/ipv4/tcp_input.c:4531
 [<ffffffff8311f71f>] tcp_sendmsg+0x1e8f/0x2b10 net/ipv4/tcp.c:1134
 [<ffffffff831d51fc>] inet_sendmsg+0x2bc/0x4c0 net/ipv4/af_inet.c:755
 [<ffffffff82dea20a>] sock_sendmsg_nosec net/socket.c:625 [inline]
 [<ffffffff82dea20a>] sock_sendmsg+0xca/0x110 net/socket.c:635
 [<ffffffff82deb158>] SYSC_sendto+0x2c8/0x340 net/socket.c:1665
 [<ffffffff82ded650>] SyS_sendto+0x40/0x50 net/socket.c:1633
 [<ffffffff83771c9f>] entry_SYSCALL_64_fastpath+0x1c/0x98
audit: type=1400 audit(1517366313.674:20): avc:  denied  { create } for  pid=7907 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_scsitransport_socket permissive=1
audit: type=1400 audit(1517366313.774:21): avc:  denied  { create } for  pid=7907 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_scsitransport_socket permissive=1
audit: type=1400 audit(1517366313.894:22): avc:  denied  { create } for  pid=7943 comm="syz-executor4" 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
audit: type=1400 audit(1517366314.334:23): avc:  denied  { attach_queue } for  pid=8051 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=tun_socket permissive=1
audit: type=1400 audit(1517366314.614:24): avc:  denied  { create } for  pid=8141 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(1517366315.624:25): avc:  denied  { write } for  pid=8378 comm="syz-executor1" path="socket:[16225]" dev="sockfs" ino=16225 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
netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'.
audit: type=1400 audit(1517366315.694:26): avc:  denied  { getopt } for  pid=8378 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
netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'.
device syz1 entered promiscuous mode
device syz1 left promiscuous mode
IPv4: Oversized IP packet from 127.0.0.1
IPv4: Oversized IP packet from 127.0.0.1
TCP: request_sock_TCPv6: Possible SYN flooding on port 20030. Sending cookies.  Check SNMP counters.
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 8561 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 a8e096586190c087 ffff8801ccd87980 ffffffff81d028ed
 ffff8800ba5c9500 1ffff100399b0f3d ffff8801ccd87b08 0000000000000000
 0000000000000000 ffff8801ccd87b30 ffffffff81605ec5 ffffffff81236530
Call Trace:
 [<ffffffff81d028ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d028ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81605ec5>] handle_userfault+0x715/0xf50 fs/userfaultfd.c:316
 [<ffffffff814a1e18>] do_anonymous_page mm/memory.c:2731 [inline]
 [<ffffffff814a1e18>] handle_pte_fault mm/memory.c:3295 [inline]
 [<ffffffff814a1e18>] __handle_mm_fault mm/memory.c:3426 [inline]
 [<ffffffff814a1e18>] handle_mm_fault+0x2938/0x3190 mm/memory.c:3455
 [<ffffffff810dc6cb>] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245
 [<ffffffff810dcd97>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308
 [<ffffffff837730c8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1033
 [<ffffffff83771c9f>] entry_SYSCALL_64_fastpath+0x1c/0x98
audit: type=1326 audit(1517366316.424:27): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8585 comm="syz-executor5" exe="/root/syz-executor5" sig=9 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x0
audit: type=1326 audit(1517366316.514:28): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8585 comm="syz-executor5" exe="/root/syz-executor5" sig=9 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x0
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8627 Comm: syz-executor7 Not tainted 4.4.113-g962d1f3 #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 b445300e86a5f4b6 ffff8801cb74f980 ffffffff81d028ed
 ffff8800b470a600 1ffff100396e9f3d ffff8801cb74fb08 0000000000000000
 0000000000000000 ffff8801cb74fb30 ffffffff81605ec5 ffffffff81236530
Call Trace:
 [<ffffffff81d028ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d028ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81605ec5>] handle_userfault+0x715/0xf50 fs/userfaultfd.c:316
 [<ffffffff814a1e18>] do_anonymous_page mm/memory.c:2731 [inline]
 [<ffffffff814a1e18>] handle_pte_fault mm/memory.c:3295 [inline]
 [<ffffffff814a1e18>] __handle_mm_fault mm/memory.c:3426 [inline]
 [<ffffffff814a1e18>] handle_mm_fault+0x2938/0x3190 mm/memory.c:3455
 [<ffffffff810dc6cb>] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245
 [<ffffffff810dcd97>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308
 [<ffffffff837730c8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1033
 [<ffffffff83771c9f>] entry_SYSCALL_64_fastpath+0x1c/0x98
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 8636 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 7058cc863bd1f311 ffff8801cb587980 ffffffff81d028ed
 ffff8800b470a780 1ffff100396b0f3d ffff8801cb587b08 0000000000000000
 0000000000000000 ffff8801cb587b30 ffffffff81605ec5 ffffffff81236530
Call Trace:
 [<ffffffff81d028ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d028ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81605ec5>] handle_userfault+0x715/0xf50 fs/userfaultfd.c:316
 [<ffffffff814a1e18>] do_anonymous_page mm/memory.c:2731 [inline]
 [<ffffffff814a1e18>] handle_pte_fault mm/memory.c:3295 [inline]
 [<ffffffff814a1e18>] __handle_mm_fault mm/memory.c:3426 [inline]
 [<ffffffff814a1e18>] handle_mm_fault+0x2938/0x3190 mm/memory.c:3455
 [<ffffffff810dc6cb>] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245
 [<ffffffff810dcd97>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308
 [<ffffffff837730c8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1033
 [<ffffffff83771c9f>] entry_SYSCALL_64_fastpath+0x1c/0x98
TCP: request_sock_TCP: Possible SYN flooding on port 20014. Sending cookies.  Check SNMP counters.
audit: type=1400 audit(1517366318.114:29): avc:  denied  { setopt } for  pid=8892 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=netlink_netfilter_socket permissive=1
binder: 8908:8913 ioctl c0306201 20680fd0 returned -11
device gre0 entered promiscuous mode