BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/7139 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 0 PID: 7139 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 9d053f45d3595d25 ffff8801d482f800 ffffffff81d028ed 0000000000000000 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801c4a74740 0000000000000003 ffff8801d482f840 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: 7134:7188 BC_DEAD_BINDER_DONE 0000000000000000 not found BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/7139 caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62 CPU: 0 PID: 7139 Comm: syz-executor0 Not tainted 4.4.113-g962d1f3 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 binder: 7134:7192 tried to acquire reference to desc 0, got 1 instead binder: 7134:7192 BC_REQUEST_DEATH_NOTIFICATION invalid ref 0 binder: 7134:7192 BC_DEAD_BINDER_DONE 0000000000000000 not found 0000000000000000 9d053f45d3595d25 ffff8801d482f800 ffffffff81d028ed 0000000000000000 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801c4a74740 0000000000000003 ffff8801d482f840 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 IPv4: Oversized IP packet from 127.0.0.1 sock: process `syz-executor2' is using obsolete getsockopt SO_BSDCOMPAT FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 7400 Comm: syz-executor5 Not tainted 4.4.113-g962d1f3 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 13e3fd70019cf93d ffff8800ae16f9f0 ffffffff81d028ed ffff8801c7c7db00 1ffff10015c2df4b ffff8800ae16fb78 0000000000000000 0000000000000000 ffff8800ae16fba0 ffffffff81605ec5 ffffffff81236530 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 [] entry_SYSCALL_64_fastpath+0x1c/0x98 CPU: 1 PID: 7414 Comm: syz-executor5 Not tainted 4.4.113-g962d1f3 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 55427d683e461b6b ffff8801d464f6d0 ffffffff81d028ed ffff8801c7c7db00 1ffff1003a8c9ee7 ffff8801d464f858 0000000000000000 0000000000000000 ffff8801d464f880 ffffffff81605ec5 ffffffff81236530 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 [] vfs_ioctl fs/ioctl.c:43 [inline] [] do_vfs_ioctl+0x7aa/0xee0 fs/ioctl.c:607 [] SYSC_ioctl fs/ioctl.c:622 [inline] [] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613 [] entry_SYSCALL_64_fastpath+0x1c/0x98 binder: 7455:7460 DecRefs 0 refcount change on invalid ref 0 ret -22 device gre0 entered promiscuous mode binder_alloc: binder_alloc_mmap_handler: 7455 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 7455:7460 ioctl 40046207 0 returned -16 binder: 7455:7475 DecRefs 0 refcount change on invalid ref 0 ret -22 binder: 7573:7589 ERROR: BC_REGISTER_LOOPER called without request binder: 7573:7607 got reply transaction with bad transaction stack, transaction 26 has target 7573:0 binder: 7573:7607 transaction failed 29201/-71, size 24-8 line 2936 binder: 7573:7589 IncRefs 0 refcount change on invalid ref 1 ret -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 7573:7589 ioctl 40046207 0 returned -16 binder: 7573:7577 ERROR: BC_REGISTER_LOOPER called without request binder_alloc: 7573: binder_alloc_buf, no vma binder: 7573:7589 transaction failed 29189/-3, size 0-0 line 3128 binder: undelivered TRANSACTION_ERROR: 29189 binder: 7573:7607 IncRefs 0 refcount change on invalid ref 1 ret -22 binder: release 7573:7589 transaction 26 in, still active binder: send failed reply for transaction 26 to 7573:7607 binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29189 binder: 7630:7648 ERROR: BC_REGISTER_LOOPER called without request binder: 7630:7639 got reply transaction with bad transaction stack, transaction 30 has target 7630:7648 binder: 7630:7639 transaction failed 29201/-71, size 24-8 line 2936 binder: release 7630:7639 transaction 30 out, still active binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: 7630:7639 IncRefs 0 refcount change on invalid ref 1 ret -22 binder: release 7630:7648 transaction 30 in, still active binder: send failed reply for transaction 30, target dead audit: type=1400 audit(1517378386.565:24): avc: denied { attach_queue } for pid=7688 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=tun_socket permissive=1 device gre0 entered promiscuous mode netlink: 4 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor5'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. sock: sock_set_timeout: `syz-executor3' (pid 7787) tries to set negative timeout sock: sock_set_timeout: `syz-executor3' (pid 7787) tries to set negative timeout netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. vmalloc: allocation failure: 0 bytes syz-executor3: page allocation failure: order:0, mode:0x24000c2 CPU: 1 PID: 7852 Comm: syz-executor3 Not tainted 4.4.113-g962d1f3 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 fab1be28729de74e ffff8800b67ef938 ffffffff81d028ed 1ffff10016cfdf2a ffff8800a9560000 00000000024000c2 0000000000000000 0000000000000001 ffff8800b67efa48 ffffffff814301e9 ffffffff838ac3a0 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] warn_alloc_failed+0x1d9/0x240 mm/page_alloc.c:2757 [] __vmalloc_node_range+0x41d/0x630 mm/vmalloc.c:1692 [] __vmalloc_node mm/vmalloc.c:1715 [inline] [] __vmalloc_node_flags mm/vmalloc.c:1729 [inline] [] vmalloc+0x5b/0x70 mm/vmalloc.c:1744 [] sel_write_load+0x130/0xff0 security/selinux/selinuxfs.c:527 [] __vfs_write+0x103/0x450 fs/read_write.c:489 [] vfs_write+0x18a/0x530 fs/read_write.c:538 [] SYSC_write fs/read_write.c:585 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:577 [] entry_SYSCALL_64_fastpath+0x1c/0x98 Mem-Info: active_anon:50765 inactive_anon:44 isolated_anon:0 active_file:3619 inactive_file:8156 isolated_file:0 unevictable:0 dirty:74 writeback:0 unstable:0 slab_reclaimable:5415 slab_unreclaimable:59678 mapped:24065 shmem:54 pagetables:637 bounce:0 free:1476746 free_pcp:599 free_cma:0 DMA free:15904kB min:160kB low:200kB high:240kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15992kB managed:15904kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes lowmem_reserve[]: 0 2911 6411 6411 DMA32 free:2685016kB min:30608kB low:38260kB high:45912kB active_anon:92492kB inactive_anon:84kB active_file:6396kB inactive_file:14940kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3129292kB managed:2982736kB mlocked:0kB dirty:144kB writeback:0kB mapped:43168kB shmem:96kB slab_reclaimable:10588kB slab_unreclaimable:107752kB kernel_stack:3008kB pagetables:1132kB unstable:0kB bounce:0kB free_pcp:1308kB local_pcp:632kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 3500 3500 Normal free:3214028kB min:36808kB low:46008kB high:55212kB active_anon:108420kB inactive_anon:92kB active_file:8080kB inactive_file:17684kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4718592kB managed:3584660kB mlocked:0kB dirty:160kB writeback:0kB mapped:53092kB shmem:108kB slab_reclaimable:11076kB slab_unreclaimable:131024kB kernel_stack:2752kB pagetables:1376kB unstable:0kB bounce:0kB free_pcp:1288kB local_pcp:600kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 DMA: 0*4kB 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15904kB DMA32: 418*4kB (UME) 360*8kB (UM) 207*16kB (UME) 121*32kB (UM) 44*64kB (UM) 35*128kB (UME) 28*256kB (UME) 29*512kB (ME) 38*1024kB (UM) 2*2048kB (M) 635*4096kB (M) = 2685016kB Normal: 557*4kB (UME) 446*8kB (UM) 201*16kB (UM) 142*32kB (UME) 76*64kB (UM) 40*128kB (UME) 31*256kB (UME) 30*512kB (ME) 41*1024kB (M) 6*2048kB (UM) 760*4096kB (M) = 3214068kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 11830 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965969 pages RAM 0 pages HighMem/MovableOnly 320144 pages reserved audit: type=1400 audit(1517378387.825:25): avc: denied { execute } for pid=7946 comm="syz-executor6" dev="pipefs" ino=14894 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=fifo_file permissive=1 audit: type=1400 audit(1517378388.075:26): avc: denied { create } for pid=7998 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=netlink_iscsi_socket permissive=1 binder: 8348:8351 ERROR: BC_REGISTER_LOOPER called without request binder: 8348:8368 got new transaction with bad transaction stack, transaction 33 has target 8348:0 binder: 8348:8368 transaction failed 29201/-71, size 0-0 line 3032 binder: BINDER_SET_CONTEXT_MGR already set binder: 8348:8368 ioctl 40046207 0 returned -16 binder_alloc: 8348: binder_alloc_buf, no vma binder: 8348:8396 transaction failed 29189/-3, size 0-0 line 3128 binder: 8348:8368 ERROR: BC_REGISTER_LOOPER called without request binder: undelivered TRANSACTION_ERROR: 29189 binder: release 8348:8368 transaction 33 out, still active binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: send failed reply for transaction 33, target dead SELinux: unrecognized netlink message: protocol=4 nlmsg_type=30 sclass=netlink_tcpdiag_socket SELinux: unrecognized netlink message: protocol=4 nlmsg_type=30 sclass=netlink_tcpdiag_socket device syz4 entered promiscuous mode SELinux: unrecognized netlink message: protocol=4 nlmsg_type=30 sclass=netlink_tcpdiag_socket device syz4 left promiscuous mode netlink: 28 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor1'. binder: 8640:8642 Release 1 refcount change on invalid ref 0 ret -22 binder: 8708:8713 transaction failed 29189/-22, size 0-0 line 3005 binder: 8708:8726 transaction failed 29189/-22, size 0-0 line 3005 binder: undelivered TRANSACTION_ERROR: 29189 audit: type=1326 audit(1517378391.255:27): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8747 comm="syz-executor0" exe="/root/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x0 audit: type=1326 audit(1517378391.325:28): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=8747 comm="syz-executor0" exe="/root/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x0 binder: 8846:8847 unknown command 0 binder: 8846:8847 ioctl c0306201 204edfd0 returned -22 binder: 8846:8857 got reply transaction with bad transaction stack, transaction 43 has target 8846:0 binder: 8846:8857 transaction failed 29201/-71, size 32-8 line 2936 binder: BINDER_SET_CONTEXT_MGR already set binder: 8846:8847 ioctl 40046207 0 returned -16 binder: 8846:8876 unknown command 0 binder_alloc: 8846: binder_alloc_buf, no vma binder: 8846:8876 ioctl c0306201 204edfd0 returned -22 binder: 8846:8847 got reply transaction with no transaction stack binder: release 8846:8857 transaction 43 out, still active binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29201 binder: send failed reply for transaction 43, target dead binder: 8846:8881 transaction failed 29189/-3, size 0-0 line 3128 binder: 8846:8847 transaction failed 29201/-71, size 32-8 line 2921 binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29189 netlink: 188 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 188 bytes leftover after parsing attributes in process `syz-executor1'. audit: type=1326 audit(1517378392.845:29): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=9109 comm="syz-executor2" exe="/root/syz-executor2" sig=9 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x0 audit: type=1326 audit(1517378392.905:30): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 pid=9109 comm="syz-executor2" exe="/root/syz-executor2" sig=9 arch=c000003e syscall=202 compat=0 ip=0x453299 code=0x0 TCP: request_sock_TCPv6: Possible SYN flooding on port 20014. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20006. Sending cookies. Check SNMP counters. TCP: request_sock_TCPv6: Possible SYN flooding on port 20006. Sending cookies. Check SNMP counters. binder: 9157:9173 got transaction to invalid handle binder: 9157:9173 transaction failed 29201/-22, size 0-0 line 3005 binder: BINDER_SET_CONTEXT_MGR already set binder: 9157:9173 ioctl 40046207 0 returned -16 binder: 9157:9189 got transaction to invalid handle binder: 9157:9189 transaction failed 29201/-22, size 0-0 line 3005 netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor2'.