panic: rw_enter: solock locking against myself Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 515996 38932 32767 0x10 0x4000000 1 syz-executor.1 *230931 38932 32767 0x10 0x4000000 0K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825df849) at panic+0x177 sys/kern/subr_prf.c:202 rw_enter(fffffd80653be240,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline] rw_enter(fffffd80653be240,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274 soisconnected(fffffd80653bebc0) at soisconnected+0x23f solock sys/kern/uipc_socket2.c:352 [inline] soisconnected(fffffd80653bebc0) at soisconnected+0x23f sys/kern/uipc_socket2.c:112 unp_connect2(fffffd80653be238,fffffd80653bebc0) at unp_connect2+0xc6 unp_connect(fffffd80653be238,fffffd8062d9de00,ffff80002e4bafd0) at unp_connect+0x46d sys/kern/uipc_usrreq.c:836 uipc_usrreq(fffffd80653be238,4,0,fffffd8062d9de00,0,ffff80002e4bafd0) at uipc_usrreq+0x49e sys_connect(ffff80002e4bafd0,ffff8000261e6318,ffff8000261e6360) at sys_connect+0x1d6 sys/kern/uipc_syscalls.c:407 syscall(ffff8000261e63e0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000261e63e0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d49aa04d80, count: 5 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: rw_enter: solock locking against myself ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825df849) at panic+0x177 sys/kern/subr_prf.c:202 rw_enter(fffffd80653be240,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline] rw_enter(fffffd80653be240,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274 soisconnected(fffffd80653bebc0) at soisconnected+0x23f solock sys/kern/uipc_socket2.c:352 [inline] soisconnected(fffffd80653bebc0) at soisconnected+0x23f sys/kern/uipc_socket2.c:112 unp_connect2(fffffd80653be238,fffffd80653bebc0) at unp_connect2+0xc6 unp_connect(fffffd80653be238,fffffd8062d9de00,ffff80002e4bafd0) at unp_connect+0x46d sys/kern/uipc_usrreq.c:836 uipc_usrreq(fffffd80653be238,4,0,fffffd8062d9de00,0,ffff80002e4bafd0) at uipc_usrreq+0x49e sys_connect(ffff80002e4bafd0,ffff8000261e6318,ffff8000261e6360) at sys_connect+0x1d6 sys/kern/uipc_syscalls.c:407 syscall(ffff8000261e63e0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000261e63e0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d49aa04d80, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000261e5ea0 rbx 0xffffffff829dab97 cpu_info_full_primary+0x2b97 rdx 0 rcx 0 rax 0xffff80002e4bafd0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb77b44cd2017073f r11 0x550b74ed095449c6 r12 0xffffffff829da998 cpu_info_full_primary+0x2998 r13 0 r14 0 r15 0x1 rip 0xffffffff810d3d78 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000261e5e90 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=230931 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002e4bbcf0,0xffffffff82afaf88 process=0xffff80002e4794e8 user=0xffff8000261e1000, vmspace=0xfffffd807b9f8d08 estcpu=31, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38932 241855 6975 32767 2 0x10 syz-executor.1 38932 515996 6975 32767 7 0x4000010 syz-executor.1 38932 238835 6975 32767 3 0x4000090 fsleep syz-executor.1 *38932 230931 6975 32767 7 0x4000010 syz-executor.1 90767 56356 38769 32767 3 0x90 nanoslp syz-executor.2 90767 159762 38769 32767 3 0x4000090 kqpoll syz-executor.2 90767 503841 38769 32767 3 0x4000090 fsleep syz-executor.2 26059 335820 13558 32767 3 0x90 piperd syz-executor.4 13558 272287 23051 0 3 0x82 wait syz-executor.4 14281 139817 52732 32767 3 0x90 nanoslp syz-executor.3 52732 345860 23051 0 3 0x82 wait syz-executor.3 1916 170398 0 0 3 0x14200 bored sosplice 61190 499565 42723 32767 3 0x90 piperd syz-executor.5 44008 44404 86837 32767 3 0x90 piperd syz-executor.6 86837 396434 23051 0 3 0x82 wait syz-executor.6 56349 115922 13092 32767 3 0x90 piperd syz-executor.7 13092 59821 23051 0 3 0x82 wait syz-executor.7 42723 33049 23051 0 3 0x82 wait syz-executor.5 38769 115541 29399 32767 3 0x90 nanoslp syz-executor.2 29399 27054 23051 0 3 0x82 wait syz-executor.2 6975 266524 13837 32767 3 0x90 nanoslp syz-executor.1 13837 82509 23051 0 3 0x82 wait syz-executor.1 14043 54227 2427 32767 3 0x90 piperd syz-executor.0 2427 387704 23051 0 3 0x82 wait syz-executor.0 23051 420582 81558 0 3 0x82 thrsleep syz-fuzzer 23051 204810 81558 0 3 0x4000082 nanoslp syz-fuzzer 23051 170717 81558 0 3 0x4000082 thrsleep syz-fuzzer 23051 42932 81558 0 3 0x4000082 thrsleep syz-fuzzer 23051 449408 81558 0 3 0x4000082 thrsleep syz-fuzzer 23051 143337 81558 0 3 0x4000082 thrsleep syz-fuzzer 23051 469787 81558 0 3 0x4000082 kqread syz-fuzzer 23051 198222 81558 0 3 0x4000082 thrsleep syz-fuzzer 81558 343799 57221 0 3 0x10008a sigsusp ksh 57221 86272 20587 0 3 0x9a kqread sshd 57096 241663 1 0 3 0x100083 ttyin getty 20587 120896 1 0 3 0x88 kqread sshd 67758 435789 75341 73 3 0x1100090 kqread syslogd 75341 428913 1 0 3 0x100082 netio syslogd 12539 82613 1 0 3 0x100080 kqread resolvd 56361 396994 84255 77 3 0x100092 kqread dhcpleased 50806 315251 84255 77 3 0x100092 kqread dhcpleased 84255 25008 1 0 3 0x80 kqread dhcpleased 97746 472343 0 0 3 0x14200 bored smr 30523 348592 0 0 3 0x14200 pgzero zerothread 18001 245964 0 0 3 0x14200 aiodoned aiodoned 2315 436862 0 0 3 0x14200 syncer update 91860 373135 0 0 3 0x14200 cleaner cleaner 13462 40479 0 0 3 0x14200 reaper reaper 38803 200758 0 0 3 0x14200 pgdaemon pagedaemon 27057 51984 0 0 3 0x14200 bored viomb 71429 393336 0 0 3 0x40014200 acpi0 acpi0 8865 498068 0 0 3 0x40014200 idle1 72527 491445 0 0 3 0x14200 bored softnet 99219 521453 0 0 3 0x14200 bored softnet 56600 142001 0 0 3 0x14200 bored softnet 98353 128248 0 0 3 0x14200 bored softnet 41689 20872 0 0 3 0x14200 bored systqmp 70243 51376 0 0 3 0x14200 bored systq 46779 415953 0 0 3 0x40014200 bored softclock 10554 215996 0 0 3 0x40014200 idle0 1 503572 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 38932 (syz-executor.1) thread 0xffff80002e4bafd0 (230931) exclusive rwlock solock r = 0 (0xfffffd80653be250) #0 witness_lock+0x44d #1 solock_pair+0x9b solock sys/kern/uipc_socket2.c:352 [inline] #1 solock_pair+0x9b sys/kern/uipc_socket2.c:384 #2 unp_connect+0x390 sys/kern/uipc_usrreq.c:808 #3 uipc_usrreq+0x49e #4 sys_connect+0x1d6 sys/kern/uipc_syscalls.c:407 #5 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #5 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #6 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8066047920) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:567 #5 vget+0x1d3 sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x122c sys/ufs/ufs/ufs_lookup.c:582 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 unp_connect+0x1c3 sys/kern/uipc_usrreq.c:769 #13 uipc_usrreq+0x49e #14 sys_connect+0x1d6 sys/kern/uipc_syscalls.c:407 #15 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #15 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #16 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b82620) #0 witness_lock+0x44d #1 unp_connect+0x1bb sys/kern/uipc_usrreq.c:769 #2 uipc_usrreq+0x49e #3 sys_connect+0x1d6 sys/kern/uipc_syscalls.c:407 #4 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] #4 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10205 6411K 6419K 78643K 11309 0 pcb 13 12K 14K 78643K 17 0 rtable 242 6K 7K 78643K 1473 0 ifaddr 81 16K 16K 78643K 110 0 sysctl 3 1K 3K 78643K 7 0 counters 56 35K 35K 78643K 64 0 ioctlops 0 0K 2K 78643K 225 0 iov 0 0K 24K 78643K 1224 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 3240 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 83 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2229 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 20 73K 121K 78643K 7644 0 sigio 0 0K 0K 78643K 130 0 proc 56 78K 103K 78643K 1047 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 716 0 in_multi 99 6K 7K 78643K 229 0 ether_multi 1 0K 0K 78643K 32 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 2K 78643K 2656 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 264 83K 98K 78643K 49544 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 195 0 NDP 11 0K 2K 78643K 39 0 temp 124 4718K 4846K 78643K 21382 0 kqueue 12 18K 26K 78643K 675 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 1167 0 1164 11 10 1 3 0 8 0 rtentry 112 169 0 55 4 0 4 4 0 8 0 unpcb 144 7373 0 7354 81 72 9 11 0 8 8 syncache 296 77 0 77 16 15 1 1 0 8 1 tcpqe 32 44 0 44 10 9 1 1 0 8 1 tcpcb 736 3226 0 3215 111 103 8 26 0 8 4 arp 120 28 0 9 1 0 1 1 0 8 0 ipq 40 12 0 12 3 3 0 1 0 8 0 ipqe 40 24 0 24 3 3 0 1 0 8 0 inpcb 320 12178 0 12164 123 116 7 16 0 8 4 nd6 48 48 0 21 1 0 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 680 0 217 32 3 29 30 0 8 0 art_table 32 681 0 217 4 0 4 4 0 8 0 art_node 16 168 0 64 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 1 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 2227 0 2217 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 12403 0 10968 91 0 91 91 0 8 0 ffsino 272 12403 0 10968 97 0 97 97 0 8 0 nchpl 144 22609 0 20973 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 77746 0 77746 2 1 1 2 0 8 1 percpumem 16 44 0 4 1 0 1 1 0 8 0 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 78496 0 78496 30 29 1 8 0 8 1 plimitpl 152 1531 0 1508 7 6 1 2 0 8 0 sigapl 424 7916 0 7866 7 0 7 7 0 8 0 futexpl 64 73352 0 73350 5 4 1 1 0 8 0 knotepl 120 960 0 0 18 0 18 18 0 8 0 kqueuepl 216 2339 0 2330 36 31 5 8 0 8 4 pipepl 320 2470 0 2441 61 54 7 10 0 8 4 fdescpl 496 7898 0 7867 7 2 5 6 0 8 0 filepl 152 61987 0 61750 143 126 17 23 0 8 7 lockfpl 104 2084 0 2082 3 2 1 2 0 8 0 lockfspl 48 346 0 344 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 61 0 45 1 0 1 1 0 8 0 ucredpl 104 12049 0 12031 1 0 1 1 0 8 0 zombiepl 144 7867 0 7866 1 0 1 1 0 8 0 processpl 1064 7916 0 7866 5 0 5 5 0 8 0 procpl 672 23587 0 23525 18 11 7 8 0 8 0 sosppl 168 140 0 138 13 12 1 1 0 8 0 sockpl 488 20806 0 20771 477 462 15 48 0 8 9 mcl64k 65536 35 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 41 0 0 4 1 3 3 0 8 0 mcl4k 4096 26 0 0 4 1 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 276 0 0 23 2 21 23 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 9055 0 0 544 0 544 544 0 8 0 bufpl 288 16905 0 10578 453 0 453 453 0 8 0 anonpl 24 1617187 0 1605359 217 116 101 108 0 186 9 amapchunkpl 152 143290 0 142759 89 63 26 37 0 158 2 amappl16 200 21779 0 21411 111 82 29 33 0 8 8 amappl15 192 1 0 0 1 0 1 1 0 8 0 amappl14 184 16 0 11 1 0 1 1 0 8 0 amappl13 176 165 0 160 1 0 1 1 0 8 0 amappl12 168 980 0 974 1 0 1 1 0 8 0 amappl11 160 2075 0 2057 2 1 1 2 0 8 0 amappl10 152 1199 0 1192 1 0 1 1 0 8 0 amappl9 144 1588 0 1581 1 0 1 1 0 8 0 amappl8 136 3138 0 3044 6 2 4 4 0 8 0 amappl7 128 2545 0 2533 1 0 1 1 0 8 0 amappl6 120 1571 0 1549 2 1 1 2 0 8 0 amappl5 112 8799 0 8778 1 0 1 1 0 8 0 amappl4 104 3060 0 3028 2 0 2 2 0 8 0 amappl3 96 25342 0 25294 2 0 2 2 0 8 0 amappl2 88 8568 0 8503 3 1 2 3 0 8 0 amappl1 80 190736 0 190101 27 11 16 19 0 8 0 amappl 88 48639 0 48478 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 7898 0 7867 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7898 0 7867 1 0 1 1 0 8 0 vmmpekpl 168 68579 0 68525 3 0 3 3 0 8 0 vmmpepl 168 780903 0 778506 226 89 137 138 0 357 12 vmsppl 368 7897 0 7867 4 0 4 4 0 8 0 rwobjpl 56 201261 0 193873 118 9 109 109 0 8 2 pdppl 4096 15803 0 15734 256 175 81 93 0 8 12 pvpl 32 3402219 0 3385523 488 309 179 240 0 265 19 pmappl 248 7897 0 7867 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1635 0 289 39 0 39 39 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825df849) at panic+0x177 sys/kern/subr_prf.c:202 rw_enter(fffffd80653be240,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline] rw_enter(fffffd80653be240,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274 soisconnected(fffffd80653bebc0) at soisconnected+0x23f solock sys/kern/uipc_socket2.c:352 [inline] soisconnected(fffffd80653bebc0) at soisconnected+0x23f sys/kern/uipc_socket2.c:112 unp_connect2(fffffd80653be238,fffffd80653bebc0) at unp_connect2+0xc6 unp_connect(fffffd80653be238,fffffd8062d9de00,ffff80002e4bafd0) at unp_connect+0x46d sys/kern/uipc_usrreq.c:836 uipc_usrreq(fffffd80653be238,4,0,fffffd8062d9de00,0,ffff80002e4bafd0) at uipc_usrreq+0x49e sys_connect(ffff80002e4bafd0,ffff8000261e6318,ffff8000261e6360) at sys_connect+0x1d6 sys/kern/uipc_syscalls.c:407 syscall(ffff8000261e63e0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff8000261e63e0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d49aa04d80, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b82418) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b82418) at __mp_lock+0x122 sys/kern/kern_lock.c:147 selwakeup(fffffd80653be920) at selwakeup+0x16 klist_empty sys/sys/event.h:361 [inline] selwakeup(fffffd80653be920) at selwakeup+0x16 sys/kern/sys_generic.c:847 sorwakeup(fffffd80653be7f0) at sorwakeup+0xc9 sys/kern/uipc_socket.c:1772 soisconnected(fffffd80653be7f0) at soisconnected+0x101 sys/kern/uipc_socket2.c:136 unp_connect2(fffffd80653be7f0,fffffd80653be9d8) at unp_connect2+0xa8 sys/kern/uipc_usrreq.c:885 uipc_usrreq(fffffd80653be7f0,11,0,fffffd80653be9d8,0,ffff80002e4bad30) at uipc_usrreq+0x4e8 sys/kern/uipc_usrreq.c:233 soconnect2(fffffd80653be7f0,fffffd80653be9d8) at soconnect2+0x8b sys/kern/uipc_socket.c:505 sys_socketpair(ffff80002e4bad30,ffff80002b058288,ffff80002b0582d0) at sys_socketpair+0xcf sys/kern/uipc_syscalls.c:466 syscall(ffff80002b058350) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002b058350) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d4ad25b310, count: 2 ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b82418) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b82418) at __mp_lock+0x122 sys/kern/kern_lock.c:147 selwakeup(fffffd80653be920) at selwakeup+0x16 klist_empty sys/sys/event.h:361 [inline] selwakeup(fffffd80653be920) at selwakeup+0x16 sys/kern/sys_generic.c:847 sorwakeup(fffffd80653be7f0) at sorwakeup+0xc9 sys/kern/uipc_socket.c:1772 soisconnected(fffffd80653be7f0) at soisconnected+0x101 sys/kern/uipc_socket2.c:136 unp_connect2(fffffd80653be7f0,fffffd80653be9d8) at unp_connect2+0xa8 sys/kern/uipc_usrreq.c:885 uipc_usrreq(fffffd80653be7f0,11,0,fffffd80653be9d8,0,ffff80002e4bad30) at uipc_usrreq+0x4e8 sys/kern/uipc_usrreq.c:233 soconnect2(fffffd80653be7f0,fffffd80653be9d8) at soconnect2+0x8b sys/kern/uipc_socket.c:505 sys_socketpair(ffff80002e4bad30,ffff80002b058288,ffff80002b0582d0) at sys_socketpair+0xcf sys/kern/uipc_syscalls.c:466 syscall(ffff80002b058350) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002b058350) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d4ad25b310, count: -13