BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor1/8721 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 1 PID: 8721 Comm: syz-executor1 Not tainted 4.4.119-g855ea74 #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 c198ad1f71895bf9 ffff8800b21d7480 ffffffff81d0402d 0000000000000001 ffffffff839fe5a0 ffffffff83d0be20 ffff8801cf95e000 0000000000000003 ffff8800b21d74c0 ffffffff81d63f84 ffff8800b21d74d8 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 [] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 audit: type=1401 audit(1520105720.732:36): op=setxattr invalid_context=280000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000audit: type=1401 audit(1520105720.732:37): op=setxattr invalid_context=280000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000A004E2408000000FE8000000000000000000000000000BBFF7F000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline] audit: type=1401 audit(1520105720.732:36): op=setxattr invalid_context=280000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000audit: type=1401 audit(1520105720.732:37): op=setxattr invalid_context=280000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000A004E2408000000FE8000000000000000000000000000BBFF7F000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 [] ipcomp_init_state+0x188/0x980 net/xfrm/xfrm_ipcomp.c:363 [] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137 [] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2058 [] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline] [] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:636 [] xfrm_user_rcv_msg+0x41c/0x6b0 net/xfrm/xfrm_user.c:2549 [] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2349 [] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2557 [] netlink_unicast_kernel net/netlink/af_netlink.c:1267 [inline] [] netlink_unicast+0x522/0x760 net/netlink/af_netlink.c:1293 [] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847 [] sock_sendmsg_nosec net/socket.c:625 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:635 [] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962 [] __sys_sendmsg+0xd3/0x190 net/socket.c:1996 [] SYSC_sendmsg net/socket.c:2007 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2003 [] entry_SYSCALL_64_fastpath+0x1c/0x98 BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor1/8721 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 1 PID: 8721 Comm: syz-executor1 Not tainted 4.4.119-g855ea74 #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 c198ad1f71895bf9 ffff8800b21d7480 ffffffff81d0402d 0000000000000001 ffffffff839fe5a0 ffffffff83d0be20 ffff8801cf95e000 0000000000000003 ffff8800b21d74c0 ffffffff81d63f84 ffff8800b21d74d8 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 [] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 [] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline] [] ipcomp_init_state+0x188/0x980 net/xfrm/xfrm_ipcomp.c:363 [] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137 [] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2058 [] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline] [] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:636 [] xfrm_user_rcv_msg+0x41c/0x6b0 net/xfrm/xfrm_user.c:2549 [] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2349 [] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2557 [] netlink_unicast_kernel net/netlink/af_netlink.c:1267 [inline] [] netlink_unicast+0x522/0x760 net/netlink/af_netlink.c:1293 [] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847 [] sock_sendmsg_nosec net/socket.c:625 [inline] [] sock_sendmsg+0xca/0x110 net/socket.c:635 [] ___sys_sendmsg+0x6c1/0x7c0 net/socket.c:1962 [] __sys_sendmsg+0xd3/0x190 net/socket.c:1996 [] SYSC_sendmsg net/socket.c:2007 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2003 [] entry_SYSCALL_64_fastpath+0x1c/0x98 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 8798 Comm: syz-executor5 Not tainted 4.4.119-g855ea74 #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 338538dc1821898b ffff8800b5b3f7d0 ffffffff81d0402d ffff8800b33bc000 1ffff10016b67f07 ffff8800b5b3f958 0000000000000000 0000000000000000 ffff8800b5b3f980 ffffffff816072a5 ffffffff81237410 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] handle_userfault+0x715/0xf50 fs/userfaultfd.c:316 [] do_anonymous_page mm/memory.c:2731 [inline] [] handle_pte_fault mm/memory.c:3295 [inline] [] __handle_mm_fault mm/memory.c:3426 [inline] [] handle_mm_fault+0x2938/0x3190 mm/memory.c:3455 [] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1033 [] SYSC_select fs/select.c:648 [inline] [] SyS_select+0x14a/0x1d0 fs/select.c:630 [] entry_SYSCALL_64_fastpath+0x1c/0x98 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. audit: type=1400 audit(1520105722.632:38): avc: denied { attach_queue } for pid=9035 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=tun_socket permissive=1 TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. netlink: 92 bytes leftover after parsing attributes in process `syz-executor2'. binder: 9199:9206 got transaction with invalid offsets ptr keychord: invalid keycode count 0 binder: 9199:9206 transaction failed 29201/-14, size 0-8 line 3156 binder: BINDER_SET_CONTEXT_MGR already set binder: 9199:9206 ioctl 40046207 0 returned -16 binder_alloc: 9199: binder_alloc_buf, no vma binder: 9199:9206 transaction failed 29189/-3, size 0-8 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 binder: 9219:9220 got transaction with invalid offsets ptr keychord: invalid keycode count 0 binder: 9219:9220 transaction failed 29201/-14, size 0-8 line 3156 binder: undelivered TRANSACTION_ERROR: 29201 binder: tried to use weak ref as strong ref binder: 9265:9271 got transaction with invalid handle, 0 binder: 9265:9271 transaction failed 29201/-22, size 56-8 line 3220 binder: BINDER_SET_CONTEXT_MGR already set binder: 9265:9276 ioctl 40046207 0 returned -16 binder_alloc: 9265: binder_alloc_buf, no vma binder: 9265:9276 transaction failed 29189/-3, size 56-8 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_ERROR: 29201 audit: type=1326 audit(1520105723.672:39): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=9283 comm="syz-executor5" exe="/root/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x453d69 code=0x0 binder: tried to use weak ref as strong ref binder: 9310:9314 got transaction with invalid handle, 0 binder: 9310:9314 transaction failed 29201/-22, size 56-8 line 3220 binder: undelivered TRANSACTION_ERROR: 29201 IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 Empty option to dns_resolver key Empty option to dns_resolver key netlink: 452 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 452 bytes leftover after parsing attributes in process `syz-executor5'. IPVS: Creating netns size=2552 id=9 handle_userfault: 9 callbacks suppressed FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 9754 Comm: syz-executor7 Not tainted 4.4.119-g855ea74 #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 c1cd322bf1742d4c ffff8801cc36f900 ffffffff81d0402d ffff8801d1349380 1ffff1003986df2d ffff8801cc36fa88 0000000000000000 0000000000000000 ffff8801cc36fab0 ffffffff816072a5 ffffffff81237410 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] handle_userfault+0x715/0xf50 fs/userfaultfd.c:316 [] do_anonymous_page mm/memory.c:2731 [inline] [] handle_pte_fault mm/memory.c:3295 [inline] [] __handle_mm_fault mm/memory.c:3426 [inline] [] handle_mm_fault+0x2938/0x3190 mm/memory.c:3455 [] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1033 [] getname_flags+0x10e/0x580 fs/namei.c:146 [] getname+0x19/0x20 fs/namei.c:206 [] do_sys_open+0x21f/0x660 fs/open.c:1032 [] SYSC_openat fs/open.c:1065 [inline] [] SyS_openat+0x30/0x40 fs/open.c:1059 [] entry_SYSCALL_64_fastpath+0x1c/0x98 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket binder: 9999:10001 ERROR: BC_REGISTER_LOOPER called without request binder_alloc: binder_alloc_mmap_handler: 9999 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 9999:10001 ioctl 40046207 0 returned -16 binder_alloc: 9999: binder_alloc_buf, no vma binder: 9999:10008 transaction failed 29189/-3, size 0-0 line 3128 binder_alloc: binder_alloc_mmap_handler: 10027 20000000-20002000 already mapped failed -16 binder: 10119:10139 unknown command 536871232 binder: 10119:10139 ioctl c0306201 20000000 returned -22 audit: type=1400 audit(1520105728.202:43): avc: denied { accept } for pid=10154 comm="syz-executor2" 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: BINDER_SET_CONTEXT_MGR already set binder: 10119:10174 ioctl 40046207 0 returned -16 netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. IPVS: Creating netns size=2552 id=10 syz-executor3 (10499): /proc/10499/oom_adj is deprecated, please use /proc/10499/oom_score_adj instead. audit: type=1400 audit(1520105730.412:44): avc: denied { bind } for pid=10631 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_generic_socket permissive=1 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=48523 sclass=netlink_xfrm_socket SELinux: unrecognized netlink message: protocol=6 nlmsg_type=48523 sclass=netlink_xfrm_socket SELinux: unrecognized netlink message: protocol=0 nlmsg_type=4022 sclass=netlink_route_socket SELinux: unrecognized netlink message: protocol=0 nlmsg_type=4022 sclass=netlink_route_socket