dccp_close: ABORT with 379 bytes unread ============================= WARNING: suspicious RCU usage 4.14.0-rc5+ #143 Not tainted ----------------------------- ./include/linux/inetdevice.h:230 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor4/9758: #0: (rcu_read_lock){....}, at: [] inet_rtm_getroute+0xaa0/0x2d70 net/ipv4/route.c:2738 stack backtrace: CPU: 0 PID: 9758 Comm: syz-executor4 Not tainted 4.14.0-rc5+ #143 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 lockdep_rcu_suspicious+0x123/0x170 kernel/locking/lockdep.c:4665 __in_dev_get_rtnl include/linux/inetdevice.h:230 [inline] fib_dump_info+0x1136/0x13d0 net/ipv4/fib_semantics.c:1377 inet_rtm_getroute+0xf97/0x2d70 net/ipv4/route.c:2785 rtnetlink_rcv_msg+0x51c/0x1090 net/core/rtnetlink.c:4240 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2409 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4264 netlink_unicast_kernel net/netlink/af_netlink.c:1273 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1299 netlink_sendmsg+0xa4a/0xe60 net/netlink/af_netlink.c:1862 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 sock_write_iter+0x31a/0x5d0 net/socket.c:912 call_write_iter include/linux/fs.h:1770 [inline] new_sync_write fs/read_write.c:468 [inline] __vfs_write+0x684/0x970 fs/read_write.c:481 vfs_write+0x189/0x510 fs/read_write.c:543 SYSC_write fs/read_write.c:588 [inline] SyS_write+0xef/0x220 fs/read_write.c:580 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x452719 RSP: 002b:00007fbc76afabe8 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452719 RDX: 0000000000000024 RSI: 0000000020226000 RDI: 0000000000000014 RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f59d8 R13: 00000000ffffffff R14: 00007fbc76afb6d4 R15: 0000000000000000 netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kauditd_printk_skb: 3 callbacks suppressed audit: type=1326 audit(1508671074.894:9905): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=9889 comm="syz-executor3" exe="/root/syz-executor3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. audit: type=1326 audit(1508671075.024:9906): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=9889 comm="syz-executor3" exe="/root/syz-executor3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 audit: type=1326 audit(1508671075.190:9907): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=9932 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 audit: type=1326 audit(1508671075.343:9908): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=9932 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. IPv6: Can't replace route, no match found kvm [9994]: vcpu0, guest rIP: 0x9115 Hyper-V uhandled wrmsr: 0x4000008f data 0x6f kvm [9994]: vcpu0, guest rIP: 0x9115 Hyper-V uhandled wrmsr: 0x4000008e data 0x6f kvm [9994]: vcpu0, guest rIP: 0x9115 Hyper-V uhandled wrmsr: 0x4000008d data 0x6f kvm [9994]: vcpu0, guest rIP: 0x9115 Hyper-V uhandled wrmsr: 0x4000008c data 0x6f *** Guest State *** CR0: actual=0x0000000080000031, shadow=0x0000000060000010, gh_mask=fffffffffffffff7 CR4: actual=0x0000000000002051, shadow=0x0000000000000000, gh_mask=ffffffffffffe871 CR3 = 0x00000000fffbc000 RSP = 0x000000000000fffa RIP = 0x0000000000000000 RFLAGS=0x00033000 DR7 = 0x0000000000000400 Sysenter RSP=0000000000000000 CS:RIP=0000:0000000000000000 CS: sel=0x0000, attr=0x000f3, limit=0x0000ffff, base=0x0000000000000000 DS: sel=0x0000, attr=0x000f3, limit=0x0000ffff, base=0x0000000000000000 SS: sel=0x0000, attr=0x000f3, limit=0x0000ffff, base=0x0000000000000000 ES: sel=0x0000, attr=0x000f3, limit=0x0000ffff, base=0x0000000000000000 FS: sel=0x0000, attr=0x000f3, limit=0x0000ffff, base=0x0000000000000000 GS: sel=0x0000, attr=0x000f3, 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=0x00002088, base=0x0000000000000000 EFER = 0x0000000000000000 PAT = 0x0007040600070406 DebugCtl = 0x0000000000000000 DebugExceptions = 0x0000000000000000 Interruptibility = 00000000 ActivityState = 00000000 *** Host State *** RIP = 0xffffffff811ba1f3 RSP = 0xffff8801d1f0f4c8 CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040 FSBase=00007fb8eabb6700 GSBase=ffff8801db300000 TRBase=ffff8801db222cc0 GDTBase=ffffffffff577000 IDTBase=ffffffffff57b000 CR0=0000000080050033 CR3=00000001c65da000 CR4=00000000001426e0 Sysenter RSP=0000000000000000 CS:RIP=0010:ffffffff84d20830 EFER = 0x0000000000000d01 PAT = 0x0000000000000000 *** Control State *** PinBased=0000003f CPUBased=b6a1edfa SecondaryExec=00000043 EntryControls=0000d1ff ExitControls=0023efff ExceptionBitmap=ffffbfff 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 = 0xffffff553392e67f TPR Threshold = 0x00 EPT pointer = 0x00000001d769f01e device gre0 entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kvm_hv_get_msr: 12 callbacks suppressed kvm [10286]: vcpu0, guest rIP: 0xfff0 Hyper-V unhandled rdmsr: 0x4000001f kvm [10286]: vcpu0, guest rIP: 0xfff0 Hyper-V unhandled rdmsr: 0x4000001f skbuff: bad partial csum: csum=53081/14726 len=2273 skbuff: bad partial csum: csum=53081/14726 len=2273 nla_parse: 4 callbacks suppressed netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. selinux_nlmsg_perm: 4 callbacks suppressed SELinux: unrecognized netlink message: protocol=4 nlmsg_type=16 sclass=netlink_tcpdiag_socket pig=10515 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=16 sclass=netlink_tcpdiag_socket pig=10515 comm=syz-executor0 QAT: Invalid ioctl QAT: Invalid ioctl audit: type=1326 audit(1508671079.373:9909): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10629 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0x7ffc0000 device gre0 entered promiscuous mode audit: type=1326 audit(1508671079.395:9910): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10629 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=64 compat=0 ip=0x452719 code=0x7ffc0000 audit: type=1326 audit(1508671079.396:9911): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10629 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0x7ffc0000 audit: type=1326 audit(1508671079.397:9912): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10629 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=55 compat=0 ip=0x452719 code=0x7ffc0000 netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. audit: type=1326 audit(1508671079.397:9913): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10629 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0x7ffc0000 audit: type=1326 audit(1508671079.397:9914): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10629 comm="syz-executor0" exe="/root/syz-executor0" sig=0 arch=c000003e syscall=9 compat=0 ip=0x452719 code=0x7ffc0000 netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 21 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 21 bytes leftover after parsing attributes in process `syz-executor0'. QAT: Invalid ioctl QAT: Invalid ioctl netlink: 37 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 37 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. kauditd_printk_skb: 61 callbacks suppressed audit: type=1326 audit(1508671080.683:9976): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10889 comm="syz-executor5" exe="/root/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 audit: type=1326 audit(1508671080.790:9977): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=10889 comm="syz-executor5" exe="/root/syz-executor5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 netlink: 17 bytes leftover after parsing attributes in process `syz-executor5'. Bearer <> rejected, not supported in standalone mode audit: type=1326 audit(1508671081.754:9978): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=11075 comm="syz-executor1" exe="/root/syz-executor1" sig=31 arch=c000003e syscall=202 compat=0 ip=0x452719 code=0xffff0000 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 sclass=netlink_xfrm_socket pig=11155 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 sclass=netlink_xfrm_socket pig=11155 comm=syz-executor3 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 11264 Comm: syz-executor7 Not tainted 4.14.0-rc5+ #143 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 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/0x23a0 fs/userfaultfd.c:427 do_anonymous_page mm/memory.c:3095 [inline] handle_pte_fault mm/memory.c:3908 [inline] __handle_mm_fault+0x2d46/0x39c0 mm/memory.c:4034 handle_mm_fault+0x334/0x8d0 mm/memory.c:4071 __do_page_fault+0x5bd/0xd60 arch/x86/mm/fault.c:1444 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1520 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1066 RIP: 0010:copy_user_generic_unrolled+0x86/0xc0 arch/x86/lib/copy_user_64.S:65 RSP: 0018:ffff8801c2817e38 EFLAGS: 00010206 RAX: ffffed0038502fd7 RBX: 0000000020002000 RCX: 0000000000000003 RDX: 0000000000000000 RSI: 0000000020002000 RDI: ffff8801c2817ea0 RBP: ffff8801c2817e68 R08: ffffed0038502fd7 R09: ffffed0038502fd7 R10: 0000000000000003 R11: ffffed0038502fd6 R12: 0000000000000018 R13: ffff8801c2817ea0 R14: 00007ffffffff000 R15: 0000000020002018 copy_from_user include/linux/uaccess.h:146 [inline] SYSC_sigaltstack kernel/signal.c:3249 [inline] SyS_sigaltstack+0xa1/0x270 kernel/signal.c:3245 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x452719 RSP: 002b:00007fd91a5b6be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000083 RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 0000000000452719 RDX: 0000000000000000 RSI: 0000000020009ff8 RDI: 0000000020002000 RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006f1da8 R13: 00000000ffffffff R14: 00007fd91a5b76d4 R15: 0000000000000000 device gre0 entered promiscuous mode device eql entered promiscuous mode device gre0 entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl device eql entered promiscuous mode