====================================================== WARNING: possible circular locking dependency detected 4.13.0-rc6-next-20170825+ #9 Not tainted ------------------------------------------------------ syz-executor7/3462 is trying to acquire lock: (cpu_hotplug_lock.rw_sem){++++}, at: [] static_key_slow_inc+0x9d/0x3c0 kernel/jump_label.c:123 but task is already holding lock: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x65c/0x1090 net/core/rtnetlink.c:4241 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (rtnl_mutex){+.+.}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1870 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 addrconf_dad_work+0xbb/0xfc0 net/ipv6/addrconf.c:3890 process_one_work+0xbfd/0x1be0 kernel/workqueue.c:2098 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 -> #2 ((&(&ifa->dad_work)->work)){+.+.}: process_one_work+0xba5/0x1be0 kernel/workqueue.c:2095 worker_thread+0x223/0x1860 kernel/workqueue.c:2233 kthread+0x39c/0x470 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 0xffffffffffffffff -> #1 ((complete)&rcu.completion){+.+.}: check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 complete_acquire include/linux/completion.h:39 [inline] __wait_for_common kernel/sched/completion.c:108 [inline] wait_for_common kernel/sched/completion.c:122 [inline] wait_for_completion+0xc8/0x770 kernel/sched/completion.c:143 __synchronize_srcu+0x1b5/0x250 kernel/rcu/srcutree.c:898 synchronize_srcu_expedited kernel/rcu/srcutree.c:923 [inline] synchronize_srcu+0x1a3/0x560 kernel/rcu/srcutree.c:974 quarantine_remove_cache+0xd7/0xf0 mm/kasan/quarantine.c:327 kasan_cache_shrink+0x9/0x10 mm/kasan/kasan.c:380 kmem_cache_shrink+0x15/0x30 mm/slab_common.c:857 acpi_os_purge_cache+0x15/0x20 drivers/acpi/osl.c:1560 acpi_purge_cached_objects+0x38/0xc9 drivers/acpi/acpica/utxface.c:271 acpi_initialize_objects+0xc5/0x112 drivers/acpi/acpica/utxfinit.c:302 acpi_bus_init drivers/acpi/bus.c:1131 [inline] acpi_init+0x23c/0x8e6 drivers/acpi/bus.c:1220 do_one_initcall+0x9e/0x330 init/main.c:826 do_initcall_level init/main.c:892 [inline] do_initcalls init/main.c:900 [inline] do_basic_setup init/main.c:918 [inline] kernel_init_freeable+0x469/0x521 init/main.c:1066 kernel_init+0x13/0x172 init/main.c:993 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 -> #0 (cpu_hotplug_lock.rw_sem){++++}: check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] cpus_read_lock+0x42/0x90 kernel/cpu.c:218 static_key_slow_inc+0x9d/0x3c0 kernel/jump_label.c:123 ip_tunnel_need_metadata+0x15/0x20 net/ipv4/ip_tunnel_core.c:431 fib_nl_newrule+0x192f/0x2b80 net/core/fib_rules.c:610 rtnetlink_rcv_msg+0x733/0x1090 net/core/rtnetlink.c:4246 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2397 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4258 netlink_unicast_kernel net/netlink/af_netlink.c:1265 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1291 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1854 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 sock_write_iter+0x320/0x5e0 net/socket.c:912 call_write_iter include/linux/fs.h:1744 [inline] do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:650 do_iter_write+0x15a/0x540 fs/read_write.c:929 vfs_writev+0x18a/0x340 fs/read_write.c:975 do_writev+0xfc/0x2a0 fs/read_write.c:1011 SYSC_writev fs/read_write.c:1084 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1081 entry_SYSCALL_64_fastpath+0x1f/0xbe other info that might help us debug this: Chain exists of: cpu_hotplug_lock.rw_sem --> (&(&ifa->dad_work)->work) --> rtnl_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rtnl_mutex); lock((&(&ifa->dad_work)->work)); lock(rtnl_mutex); lock(cpu_hotplug_lock.rw_sem); *** DEADLOCK *** 1 lock held by syz-executor7/3462: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x65c/0x1090 net/core/rtnetlink.c:4241 stack backtrace: CPU: 0 PID: 3462 Comm: syz-executor7 Not tainted 4.13.0-rc6-next-20170825+ #9 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 print_circular_bug+0x503/0x710 kernel/locking/lockdep.c:1259 check_prev_add+0x865/0x1520 kernel/locking/lockdep.c:1894 check_prevs_add kernel/locking/lockdep.c:2020 [inline] validate_chain kernel/locking/lockdep.c:2469 [inline] __lock_acquire+0x3286/0x4620 kernel/locking/lockdep.c:3498 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:35 [inline] percpu_down_read include/linux/percpu-rwsem.h:58 [inline] cpus_read_lock+0x42/0x90 kernel/cpu.c:218 static_key_slow_inc+0x9d/0x3c0 kernel/jump_label.c:123 ip_tunnel_need_metadata+0x15/0x20 net/ipv4/ip_tunnel_core.c:431 fib_nl_newrule+0x192f/0x2b80 net/core/fib_rules.c:610 rtnetlink_rcv_msg+0x733/0x1090 net/core/rtnetlink.c:4246 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2397 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4258 netlink_unicast_kernel net/netlink/af_netlink.c:1265 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1291 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1854 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 sock_write_iter+0x320/0x5e0 net/socket.c:912 call_write_iter include/linux/fs.h:1744 [inline] do_iter_readv_writev+0x531/0x7f0 fs/read_write.c:650 do_iter_write+0x15a/0x540 fs/read_write.c:929 vfs_writev+0x18a/0x340 fs/read_write.c:975 do_writev+0xfc/0x2a0 fs/read_write.c:1011 SYSC_writev fs/read_write.c:1084 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1081 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446749 RSP: 002b:00007fd942034c08 EFLAGS: 00000296 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 0000000000446749 RDX: 0000000000000001 RSI: 0000000020917ff0 RDI: 0000000000000018 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 00000000ffffffff R13: 0000000000000090 R14: 00000000006e2150 R15: 0000000020c88ff8 netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. QAT: Invalid ioctl QAT: Invalid ioctl PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex sctp: [Deprecated]: syz-executor1 (pid 3570) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor1 (pid 3589) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead QAT: Invalid ioctl capability: warning: `syz-executor1' uses 32-bit capabilities (legacy support in use) QAT: Invalid ioctl hrtimer: interrupt took 61578 ns audit: type=1326 audit(1503845167.542:7): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=3608 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 syz-executor6 uses obsolete (PF_INET,SOCK_PACKET) device lo entered promiscuous mode audit: type=1326 audit(1503845167.619:8): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=3608 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 QAT: Invalid ioctl QAT: Invalid ioctl SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1 sclass=netlink_route_socket pig=3703 comm=syz-executor0 RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? SELinux: unrecognized netlink message: protocol=0 nlmsg_type=1 sclass=netlink_route_socket pig=3703 comm=syz-executor0 RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=3694 comm=syz-executor7 device lo entered promiscuous mode IPv6: Can't replace route, no match found device lo left promiscuous mode IPv6: Can't replace route, no match found audit: type=1326 audit(1503845168.526:9): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=3951 comm="syz-executor7" exe="/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0x0 hid-generic 0003:0627:0001.0001: pid 3953 passed too short report xprt_adjust_timeout: rq_timeout = 0! audit: type=1326 audit(1503845168.603:10): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=4007 comm="syz-executor3" exe="/syz-executor3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503845168.609:11): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=3951 comm="syz-executor7" exe="/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0x0 xprt_adjust_timeout: rq_timeout = 0! hid-generic 0003:0627:0001.0001: pid 4017 passed too short report TCP: request_sock_TCP: Possible SYN flooding on port 20024. Sending cookies. Check SNMP counters. sr 1:0:0:0: [sg1] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK sr 1:0:0:0: [sg1] tag#0 CDB: Read density support 44 00 00 00 00 00 00 00 00 sr 1:0:0:0: [sg1] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK sr 1:0:0:0: [sg1] tag#0 CDB: Read density support 44 00 00 00 00 00 00 00 00 TCP: tcp_parse_options: Illegal window scaling value 205 > 14 received TCP: tcp_parse_options: Illegal window scaling value 205 > 14 received QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl sctp: [Deprecated]: syz-executor6 (pid 4499) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor1 (pid 4512) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor6 (pid 4525) Use of int in maxseg socket option. Use struct sctp_assoc_value instead kvm: pic: non byte read kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: non byte write kvm: pic: level sensitive irq not supported kvm: pic: non byte write kvm: pic: level sensitive irq not supported kvm: pic: single mode not supported kvm: pic: single mode not supported kvm: pic: level sensitive irq not supported kvm: pic: single mode not supported kvm: pic: level sensitive irq not supported QAT: Invalid ioctl QAT: Invalid ioctl kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x4000008f data 0x75 kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x4000008e data 0x76 kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x4000008d data 0x77 kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x4000008c data 0x78 kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x4000008b data 0x79 kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x4000008a data 0x7a kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x40000089 data 0x7b kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x40000088 data 0x7c kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x40000087 data 0x7d kvm [4603]: vcpu0, guest rIP: 0x910f Hyper-V uhandled wrmsr: 0x40000086 data 0x7e SELinux: unrecognized netlink message: protocol=9 nlmsg_type=19 sclass=netlink_audit_socket pig=4676 comm=syz-executor7 kauditd_printk_skb: 4 callbacks suppressed audit: type=1326 audit(1503845171.378:15): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=4673 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=19 sclass=netlink_audit_socket pig=4676 comm=syz-executor7 *** Guest State *** CR0: actual=0x0000000000000030, shadow=0x0000000060000010, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000000000000 RIP = 0x000000000000fff0 RFLAGS=0x00000100 DR7 = 0x0000000000000409 Sysenter RSP=0000000000000f80 CS:RIP=0030:0000000000002810 CS: sel=0xf000, attr=0x0009b, limit=0x0000ffff, base=0x00000000ffff0000 DS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 audit: type=1326 audit(1503845171.447:16): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=4673 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 SS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 ES: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 FS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 GS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 GDTR: limit=0x0000ffff, base=0x0000000000000000 LDTR: sel=0x0000, attr=0x00082, limit=0x0000ffff, base=0x0000000000000000 IDTR: limit=0x0000ffff, base=0x0000000000000000 TR: sel=0x0000, attr=0x0008b, limit=0x0000ffff, base=0x0000000000000000 EFER = 0x0000000000000000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 BndCfgS = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811b8fd7 RSP = 0xffff88004f8b74c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f1eb6a9b700 GSBase=ffff88006df00000 TRBase=ffff88006de23100 GDTBase=ffffffffff575000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=000000003d4b2000 CR4=00000000000026e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84da5a70 EFER = 0x0000000000000d01 PAT = 0x0007040600070406 *** Control State *** PinBased=0000003f CPUBased=b6a1edfa SecondaryExec=000000e3 EntryControls=0001d1ff ExitControls=00afefff ExceptionBitmap=0006004a PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 reason=80000021 qualification=0000000000000000 kvm [4742]: vcpu2, guest rIP: 0x9115 Hyper-V uhandled wrmsr: 0x40000020 data 0x0 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffde159e2b3e TPR Threshold = 0x00 EPT pointer = 0x000000006a18c01e Virtual processor ID = 0x0001 *** Guest State *** CR0: actual=0x0000000000000030, shadow=0x0000000060000010, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000000000000 RIP = 0x000000000000fff0 sg_write: data in/out 327773/154 bytes for SCSI command 0x53-- guessing data in; program syz-executor4 not setting count and/or reply_len properly RFLAGS=0x00000100 DR7 = 0x0000000000000409 Sysenter RSP=0000000000000f80 CS:RIP=0030:0000000000002810 CS: sel=0xf000, attr=0x0009b, limit=0x0000ffff, base=0x00000000ffff0000 DS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 SS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 ES: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 FS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 sg_write: data in/out 327773/154 bytes for SCSI command 0x53-- guessing data in; program syz-executor4 not setting count and/or reply_len properly kvm: MWAIT instruction emulated as NOP! GS: sel=0x0000, attr=0x00093, limit=0x0000ffff, base=0x0000000000000000 GDTR: limit=0x0000ffff, base=0x0000000000000000 LDTR: sel=0x0000, attr=0x00082, limit=0x0000ffff, base=0x0000000000000000 IDTR: limit=0x0000ffff, base=0x0000000000000000 TR: sel=0x0000, attr=0x0008b, limit=0x0000ffff, base=0x0000000000000000 EFER = 0x0000000000000000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 BndCfgS = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811b8fd7 RSP = 0xffff88004f8b74c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f1eb6a9b700 GSBase=ffff88006de00000 TRBase=ffff88003ed23100 GDTBase=ffffffffff576000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=000000003d4b2000 CR4=00000000000026e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84da5a70 EFER = 0x0000000000000d01 PAT = 0x0007040600070406 *** Control State *** PinBased=0000003f CPUBased=b6a1edfa SecondaryExec=000000e3 EntryControls=0001d1ff ExitControls=00afefff ExceptionBitmap=0006004a PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000003 reason=80000021 qualification=0000000000000000 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffddfdc0d850 TPR Threshold = 0x00 EPT pointer = 0x000000006bc4f01e Virtual processor ID = 0x0035 nla_parse: 4 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'. kvm [4793]: vcpu0, guest rIP: 0x9110 Hyper-V uhandled wrmsr: 0x40000020 data 0x4d1ba6600a9 netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'. QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl 8021q: VLANs not supported on lo netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. TCP: request_sock_TCP: Possible SYN flooding on port 20028. Sending cookies. Check SNMP counters. TCP: request_sock_TCP: Possible SYN flooding on port 20016. Sending cookies. Check SNMP counters. netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor6'. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=514 sclass=netlink_audit_socket pig=5206 comm=syz-executor1 pit: kvm: requested 2514 ns i8254 timer period limited to 500000 ns SELinux: unrecognized netlink message: protocol=9 nlmsg_type=514 sclass=netlink_audit_socket pig=5206 comm=syz-executor1 device lo entered promiscuous mode netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pig=5409 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=65535 sclass=netlink_route_socket pig=5409 comm=syz-executor7 FAULT_FLAG_ALLOW_RETRY missing 31 CPU: 3 PID: 5439 Comm: syz-executor7 Not tainted 4.13.0-rc6-next-20170825+ #9 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 handle_userfault+0x11ec/0x2390 fs/userfaultfd.c:427 do_anonymous_page mm/memory.c:3135 [inline] handle_pte_fault mm/memory.c:3908 [inline] __handle_mm_fault+0x3823/0x39c0 mm/memory.c:4034 handle_mm_fault+0x3bb/0x860 mm/memory.c:4071 __do_page_fault+0x4f6/0xb60 arch/x86/mm/fault.c:1445 trace_do_page_fault+0x141/0x730 arch/x86/mm/fault.c:1538 do_async_page_fault+0x72/0xc0 arch/x86/kernel/kvm.c:266 async_page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1093 RIP: 0010:copy_user_generic_string+0x2c/0x40 arch/x86/lib/copy_user_64.S:143 RSP: 0018:ffff880050effe38 EFLAGS: 00010246 RAX: ffffed000a1dffd5 RBX: 0000000000000008 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff880050effea0 RDI: 0000000020002000 RBP: ffff880050effe68 R08: ffffed000a1dffd5 R09: ffffed000a1dffd5 R10: 0000000000000001 R11: ffffed000a1dffd4 R12: 0000000020002000 R13: ffff880050effea0 R14: 00007ffffffff000 R15: 0000000020002008 copy_to_user include/linux/uaccess.h:154 [inline] SYSC_pipe2 fs/pipe.c:846 [inline] SyS_pipe2 fs/pipe.c:838 [inline] SYSC_pipe fs/pipe.c:862 [inline] SyS_pipe+0xfd/0x2e0 fs/pipe.c:860 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446749 RSP: 002b:00007fd942034c08 EFLAGS: 00000292 ORIG_RAX: 0000000000000016 RAX: ffffffffffffffda RBX: 0000000020002000 RCX: 0000000000446749 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020002000 RBP: 0000000000708000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 00000000ffffffff R13: 00000000000056b0 R14: 00000000006e7770 R15: 0000000000000000 program syz-executor6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor6 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1326 audit(1503845174.732:17): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5615 comm="syz-executor2" exe="/syz-executor2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 *** Guest State *** CR0: actual=0x0000000000000031, shadow=0x0000000060000011, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000000000f80 RIP = 0x0000000000000000 RFLAGS=0x003cf702 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000f80 CS:RIP=0030:0000000000002810 CS: sel=0x0030, attr=0x0409b, limit=0x000fffff, base=0x0000000000000000 DS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 SS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 ES: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 FS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 GS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 GDTR: limit=0x000007ff, base=0x0000000000001000 LDTR: sel=0x0008, attr=0x04082, limit=0x000007ff, base=0x0000000000001800 IDTR: limit=0x000001ff, base=0x0000000000003800 TR: sel=0x0000, attr=0x0008b, limit=0x0000ffff, base=0x0000000000000000 EFER = 0x0000000000000001 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 BndCfgS = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811b8fd7 RSP = 0xffff88006b06f378 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f2490170700 GSBase=ffff88003ed00000 TRBase=ffff88003ed23100 GDTBase=ffffffffff576000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=0000000039463000 CR4=00000000000026e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84da5a70 EFER = 0x0000000000000d01 PAT = 0x0007040600070406 *** Control State *** PinBased=0000007f CPUBased=b6a1edfa SecondaryExec=000000e3 EntryControls=0001d1ff ExitControls=00afefff ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=800000fc errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 reason=80000021 qualification=0000000000000000 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffdb6fb353b6 TPR Threshold = 0x00 EPT pointer = 0x000000004eac501e audit: type=1326 audit(1503845174.868:18): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5615 comm="syz-executor2" exe="/syz-executor2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 Virtual processor ID = 0x003d *** Guest State *** CR0: actual=0x0000000000000031, shadow=0x0000000060000011, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000000000f80 RIP = 0x0000000000000000 RFLAGS=0x003cf702 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000f80 CS:RIP=0030:0000000000002810 CS: sel=0x0030, attr=0x0409b, limit=0x000fffff, base=0x0000000000000000 DS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 SS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 ES: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 FS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 GS: sel=0x0038, attr=0x04093, limit=0x000fffff, base=0x0000000000000000 GDTR: limit=0x000007ff, base=0x0000000000001000 LDTR: sel=0x0008, attr=0x04082, limit=0x000007ff, base=0x0000000000001800 IDTR: limit=0x000001ff, base=0x0000000000003800 TR: sel=0x0000, attr=0x0008b, limit=0x0000ffff, base=0x0000000000000000 EFER = 0x0000000000000001 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 BndCfgS = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811b8fd7 RSP = 0xffff88003d0cf378 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f249014f700 GSBase=ffff88006de00000 TRBase=ffff88006de23100 GDTBase=ffffffffff575000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=0000000039463000 CR4=00000000000026e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84da5a70 EFER = 0x0000000000000d01 PAT = 0x0007040600070406 *** Control State *** PinBased=0000003f CPUBased=b699edfa SecondaryExec=000000e2 EntryControls=0001d1ff ExitControls=00afefff ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=00000000 errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 reason=80000021 qualification=0000000000000000 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffdb566fd442 EPT pointer = 0x0000000067fef01e Virtual processor ID = 0x0064 audit: type=1326 audit(1503845174.958:19): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5705 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503845175.019:20): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5705 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 device lo left promiscuous mode rfkill: input handler disabled device lo entered promiscuous mode rfkill: input handler enabled QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl sg_write: data in/out 327773/154 bytes for SCSI command 0x56-- guessing data in; program syz-executor1 not setting count and/or reply_len properly sg_write: data in/out 327773/154 bytes for SCSI command 0x56-- guessing data in; program syz-executor1 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6266 comm=syz-executor0 device lo entered promiscuous mode