====================================================== WARNING: possible circular locking dependency detected 4.13.0-rc6-next-20170825+ #9 Not tainted ------------------------------------------------------ kworker/3:1/802 is trying to acquire lock: (&kvm->irqfds.resampler_lock){+.+.}, at: [] irqfd_resampler_shutdown+0xe3/0x6b0 arch/x86/kvm/../../../virt/kvm/eventfd.c:98 but task is already holding lock: ((&irqfd->shutdown)){+.+.}, at: [] process_one_work+0xb2c/0x1be0 kernel/workqueue.c:2094 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 ((&irqfd->shutdown)){+.+.}: 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 kvm_irqfd_assign arch/x86/kvm/../../../virt/kvm/eventfd.c:364 [inline] kvm_irqfd+0x994/0x1d50 arch/x86/kvm/../../../virt/kvm/eventfd.c:572 kvm_vm_ioctl+0x1079/0x1c40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3032 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe -> #0 (&kvm->irqfds.resampler_lock){+.+.}: 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 __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 irqfd_resampler_shutdown+0xe3/0x6b0 arch/x86/kvm/../../../virt/kvm/eventfd.c:98 irqfd_shutdown+0xd8/0x1a0 arch/x86/kvm/../../../virt/kvm/eventfd.c:137 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 other info that might help us debug this: Chain exists of: &kvm->irqfds.resampler_lock --> (complete)&rcu.completion --> (&irqfd->shutdown) Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock((&irqfd->shutdown)); lock((complete)&rcu.completion); lock((&irqfd->shutdown)); lock(&kvm->irqfds.resampler_lock); *** DEADLOCK *** 2 locks held by kworker/3:1/802: #0: ("kvm-irqfd-cleanup"){++++}, at: [] __write_once_size include/linux/compiler.h:305 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] atomic64_set arch/x86/include/asm/atomic64_64.h:33 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] atomic_long_set include/asm-generic/atomic-long.h:56 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] set_work_data kernel/workqueue.c:617 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ("kvm-irqfd-cleanup"){++++}, at: [] process_one_work+0xad4/0x1be0 kernel/workqueue.c:2090 #1: ((&irqfd->shutdown)){+.+.}, at: [] process_one_work+0xb2c/0x1be0 kernel/workqueue.c:2094 stack backtrace: CPU: 3 PID: 802 Comm: kworker/3:1 Not tainted 4.13.0-rc6-next-20170825+ #9 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: kvm-irqfd-cleanup irqfd_shutdown 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 __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 irqfd_resampler_shutdown+0xe3/0x6b0 arch/x86/kvm/../../../virt/kvm/eventfd.c:98 irqfd_shutdown+0xd8/0x1a0 arch/x86/kvm/../../../virt/kvm/eventfd.c:137 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 *** 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=0x00000002 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 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 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 = 0xffff88003cd174c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f4a3c6ea700 GSBase=ffff88003ed00000 TRBase=ffff88003ed23100 GDTBase=ffffffffff576000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=000000003bc54000 CR4=00000000000026e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84da5a70 EFER = 0x0000000000000d01 PAT = 0x0007040600070406 *** Control State *** PinBased=0000003f CPUBased=b699edfe SecondaryExec=000000e2 EntryControls=0001d1ff ExitControls=00afefff ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=800000ff errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 reason=80000021 qualification=0000000000000000 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffdd9b55f97a EPT pointer = 0x000000003d35a01e Virtual processor ID = 0x0034 sctp: [Deprecated]: syz-executor0 (pid 5330) Use of int in maxseg socket option. Use struct sctp_assoc_value instead audit: type=1326 audit(1503856760.953:2): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5310 comm="syz-executor0" exe="/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app sctp: [Deprecated]: syz-executor0 (pid 5373) Use of int in maxseg socket option. Use struct sctp_assoc_value instead audit: type=1326 audit(1503856761.006:3): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5310 comm="syz-executor0" exe="/syz-executor0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. audit: type=1326 audit(1503856761.054:4): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5412 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 [drm:drm_mode_legacy_fb_format] *ERROR* bad bpp, assuming x8r8g8b8 pixel format audit: type=1326 audit(1503856761.075:5): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5412 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 [drm:drm_mode_legacy_fb_format] *ERROR* bad bpp, assuming x8r8g8b8 pixel format do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app netlink: 11 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor6'. sctp: [Deprecated]: syz-executor2 (pid 5521) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor2 (pid 5521) Use of int in maxseg socket option. Use struct sctp_assoc_value instead netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'. sctp: [Deprecated]: syz-executor2 (pid 5521) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor2 (pid 5521) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 5532) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'. sctp: [Deprecated]: syz-executor0 (pid 5534) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor7'. kvm_pmu: event creation failed -2 device syz7 entered promiscuous mode sctp: [Deprecated]: syz-executor1 (pid 5599) Use of int in max_burst socket option. Use struct sctp_assoc_value instead audit: type=1326 audit(1503856761.497:6): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5607 comm="syz-executor2" exe="/syz-executor2" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 device syz7 left promiscuous mode device syz7 entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=5623 comm=syz-executor3 QAT: Invalid ioctl QAT: Invalid ioctl TCP: request_sock_TCPv6: Possible SYN flooding on port 20001. Sending cookies. Check SNMP counters. SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=5788 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=24 sclass=netlink_tcpdiag_socket pig=5788 comm=syz-executor1 audit: type=1326 audit(1503856761.962:7): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5812 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503856761.999:8): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5812 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 sctp: [Deprecated]: syz-executor1 (pid 5851) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor1 (pid 5866) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead audit: type=1326 audit(1503856762.065:9): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=5812 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=5971 comm=syz-executor2 *** Guest State *** CR0: actual=0x0000000000000024, shadow=0x0000000000000004, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000100000000 RIP = 0x000000000010f002 RFLAGS=0xfffffffffffffffe DR7 = 0x0000000000000400 Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 CS: sel=0x0000, attr=0x10000, limit=0x00017004, base=0x0000000000000004 DS: sel=0x0003, attr=0x10000, limit=0x00015000, base=0x0000000000004000 SS: sel=0x000d, attr=0x10000, limit=0x00003000, base=0x0000000000100000 ES: sel=0x000d, attr=0x030a1, limit=0x00005000, base=0x0000000000000002 FS: sel=0x000d, attr=0x10000, limit=0x00003000, base=0x0000000000006000 GS: sel=0x0000, attr=0x10000, limit=0x00007000, base=0x0000000000016000 GDTR: limit=0x0000f000, base=0x0000000000103006 LDTR: sel=0x0003, attr=0x10000, limit=0x00005000, base=0x0000000000010000 IDTR: limit=0x0000d000, base=0x0000000000001000 TR: sel=0x000f, attr=0x05099, limit=0x00103000, base=0x0000000000001000 EFER = 0x0000000000004000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 BndCfgS = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811b8fd7 RSP = 0xffff8800510674c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f0030f6c700 GSBase=ffff88003ed00000 TRBase=ffff88003ed23100 GDTBase=ffffffffff576000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=000000006904e000 CR4=00000000000026e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84da5a70 EFER = 0x0000000000000d01 PAT = 0x0007040600070406 *** Control State *** PinBased=0000003f CPUBased=b699edfe SecondaryExec=000000e2 EntryControls=0001d1ff ExitControls=00afefff ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000 VMEntry: intr_info=80000001 errcode=00000000 ilen=00000000 VMExit: intr_info=00000000 errcode=00000000 ilen=00000000 reason=80000021 qualification=0000000000000000 IDTVectoring: info=00000000 errcode=00000000 TSC Offset = 0xffffffdc2dff86be EPT pointer = 0x00000000399b901e Virtual processor ID = 0x0052 *** Guest State *** CR0: actual=0x0000000000000030, shadow=0x0000000060000010, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000100000000 RIP = 0x000000000010f002 RFLAGS=0xfffffffffffffffe DR7 = 0x0000000000000400 Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 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 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 = 0xffff8800318574c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f0030f4a700 GSBase=ffff88006de00000 TRBase=ffff88006de23100 GDTBase=ffffffffff575000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=000000006904e000 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 = 0xffffffdc21f05e3c EPT pointer = 0x0000000053ea701e Virtual processor ID = 0x0001 TCP: request_sock_TCPv6: Possible SYN flooding on port 20005. Sending cookies. Check SNMP counters. sctp: [Deprecated]: syz-executor7 (pid 6196) Use of int in max_burst socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor7 (pid 6229) Use of int in max_burst socket option. Use struct sctp_assoc_value instead QAT: Invalid ioctl sctp: [Deprecated]: syz-executor0 (pid 6305) Use of int in max_burst socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 6312) Use of int in max_burst socket option. Use struct sctp_assoc_value instead audit: type=1326 audit(1503856764.079:10): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=6382 comm="syz-executor3" exe="/syz-executor3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 IPv6: NLM_F_REPLACE set, but no existing node found! IPv6: NLM_F_REPLACE set, but no existing node found! [drm:drm_mode_legacy_fb_format] *ERROR* bad bpp, assuming x8r8g8b8 pixel format [drm:drm_mode_legacy_fb_format] *ERROR* bad bpp, assuming x8r8g8b8 pixel format sock: process `syz-executor7' is using obsolete getsockopt SO_BSDCOMPAT SELinux: unrecognized netlink message: protocol=9 nlmsg_type=20 sclass=netlink_audit_socket pig=6595 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=20 sclass=netlink_audit_socket pig=6625 comm=syz-executor0 RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma? device lo entered promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=6697 comm=syz-executor3 PF_BRIDGE: RTM_SETLINK with unknown ifindex nla_parse: 28 callbacks suppressed netlink: 20 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 20 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 19 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 19 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable do_dccp_setsockopt: sockopt(CHANGE_L/R) is deprecated: fix your app Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable sctp: [Deprecated]: syz-executor3 (pid 7086) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead QAT: Invalid ioctl sctp: [Deprecated]: syz-executor3 (pid 7086) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead QAT: Invalid ioctl SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=7141 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pig=7159 comm=syz-executor7 TCP: request_sock_TCP: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. ALSA: seq fatal error: cannot create timer (-19) ALSA: seq fatal error: cannot create timer (-19) kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008f kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008e kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008d kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008c kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008b kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x4000008a kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000089 kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000088 kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000087 kvm [7338]: vcpu0, guest rIP: 0x9135 Hyper-V unhandled rdmsr: 0x40000086 kvm [7338]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000023 data 0x66c900003b9a1043 kvm [7338]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000022 data 0x66c90000cb211043 kvm [7338]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000023 data 0x66c900003b9a1043 kvm [7338]: vcpu0, guest rIP: 0x9112 Hyper-V uhandled wrmsr: 0x40000022 data 0x66c90000cb211043 kvm: vcpu 0: requested 316 ns lapic timer period limited to 500000 ns sctp: [Deprecated]: syz-executor2 (pid 7418) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor2 (pid 7423) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead TCP: request_sock_TCP: Possible SYN flooding on port 20012. Sending cookies. Check SNMP counters. *** Guest State *** CR0: actual=0x0000000000000020, shadow=0x0000000000000000, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002050, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x0000000000000f80 RIP = 0x0000000000000000 RFLAGS=0x00000002 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000f80 CS:RIP=0030:0000000000002810 CS: sel=0x0000, attr=0x10000, limit=0x00080000, base=0x0000000000000000 DS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x000000000000d000 SS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 ES: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 FS: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 GS: sel=0x000f, attr=0x10000, limit=0x00000000, base=0x0000000000000000 GDTR: limit=0x0000fffe, base=0x0000000000000000 LDTR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 IDTR: limit=0x00000000, base=0x0000000000000000 TR: sel=0x0000, attr=0x10000, limit=0x00000000, base=0x0000000000000000 EFER = 0x0000000000000000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 BndCfgS = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811b8fd7 RSP = 0xffff880030c4f4c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007f4a3c6c8700 GSBase=ffff88003ed00000 TRBase=ffff88003ed23100 GDTBase=ffffffffff576000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=000000006c53f000 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 = 0xffffffd777f822c4 EPT pointer = 0x0000000039e0d01e Virtual processor ID = 0x0071 audit: type=1326 audit(1503856769.818:11): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7548 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 audit: type=1326 audit(1503856769.919:12): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7548 comm="syz-executor4" exe="/syz-executor4" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=3131 sclass=netlink_xfrm_socket pig=7584 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=3131 sclass=netlink_xfrm_socket pig=7584 comm=syz-executor7 print_req_error: I/O error, dev loop3, sector 0 Buffer I/O error on dev loop3, logical block 0, lost async page write 8021q: VLANs not supported on lo audit: type=1326 audit(1503856770.572:13): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=7765 comm="syz-executor5" exe="/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x446749 code=0xffff0000