panic: rw_enter: solock locking against myself Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 4031 31733 32767 0x10 0x4000000 0K syz-executor.4 12866 98224 32767 0x10 0 1 syz-executor.7 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827dc239) at panic+0x17b sys/kern/subr_prf.c:198 rw_enter(fffffd8079bf1600,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline] rw_enter(fffffd8079bf1600,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274 soisconnected(fffffd8079bf1bb0) at soisconnected+0x243 solock sys/kern/uipc_socket2.c:352 [inline] soisconnected(fffffd8079bf1bb0) at soisconnected+0x243 sys/kern/uipc_socket2.c:111 unp_connect2(fffffd8079bf15f8,fffffd8079bf1bb0) at unp_connect2+0xca unp_connect(fffffd8079bf15f8,fffffd806d4efa00,ffff80002128d8a0) at unp_connect+0x46d sys/kern/uipc_usrreq.c:908 sys_connect(ffff80002128d8a0,ffff80002e437800,ffff80002e437850) at sys_connect+0x207 sys/kern/uipc_syscalls.c:422 syscall(ffff80002e4378d0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4378d0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x44c1d4a1880, count: 6 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827dc239) at panic+0x17b sys/kern/subr_prf.c:198 rw_enter(fffffd8079bf1600,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline] rw_enter(fffffd8079bf1600,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274 soisconnected(fffffd8079bf1bb0) at soisconnected+0x243 solock sys/kern/uipc_socket2.c:352 [inline] soisconnected(fffffd8079bf1bb0) at soisconnected+0x243 sys/kern/uipc_socket2.c:111 unp_connect2(fffffd8079bf15f8,fffffd8079bf1bb0) at unp_connect2+0xca unp_connect(fffffd8079bf15f8,fffffd806d4efa00,ffff80002128d8a0) at unp_connect+0x46d sys/kern/uipc_usrreq.c:908 sys_connect(ffff80002128d8a0,ffff80002e437800,ffff80002e437850) at sys_connect+0x207 sys/kern/uipc_syscalls.c:422 syscall(ffff80002e4378d0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4378d0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x44c1d4a1880, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002e437430 rbx 0xffffffff82bbbb8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff80002128d8a0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x16a3da92924fadec r11 0xec01338941455011 r12 0xffffffff82bbb990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff82078dac db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e437420 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) pid=4031 stat=onproc flags process=10 proc=4000000 pri=32, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800021237328,0xffff80002128c5a8 process=0xffff8000ffff90c8 user=0xffff80002e432000, vmspace=0xfffffd80089fe570 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6386 489703 81439 32767 2 0x10 syz-executor.1 35559 285604 78170 32767 2 0x10 syz-executor.6 35559 71616 78170 32767 2 0x4000010 syz-executor.6 57364 8456 14234 32767 2 0x10 syz-executor.0 31733 373300 38826 32767 2 0x10 syz-executor.4 *31733 4031 38826 32767 7 0x4000010 syz-executor.4 31733 274767 38826 32767 3 0x4000090 fsleep syz-executor.4 31733 16870 38826 32767 3 0x4000090 fsleep syz-executor.4 70209 220657 98224 32767 2 0x10 syz-executor.7 70209 132184 98224 32767 3 0x4000090 ttyretype syz-executor.7 70209 278292 98224 32767 3 0x4000090 ttyretype syz-executor.7 67594 398748 34451 32767 2 0x10 syz-executor.5 98224 12866 59340 32767 7 0x10 syz-executor.7 59340 401192 32653 0 3 0x82 wait syz-executor.7 81439 455184 19527 32767 3 0x90 nanoslp syz-executor.1 19527 209246 32653 0 3 0x82 wait syz-executor.1 3266 319771 93197 32767 2 0x10 syz-executor.3 93197 270944 32653 0 3 0x82 wait syz-executor.3 14234 412522 53810 32767 2 0x10 syz-executor.0 53810 226039 32653 0 3 0x82 wait syz-executor.0 51068 12406 54507 32767 3 0x90 nanoslp syz-executor.2 54507 93698 32653 0 3 0x82 wait syz-executor.2 34451 156314 70351 32767 2 0x10 syz-executor.5 70351 258440 32653 0 3 0x82 wait syz-executor.5 38826 363588 54054 32767 3 0x90 nanoslp syz-executor.4 54054 392142 32653 0 3 0x82 wait syz-executor.4 78170 163246 18476 32767 3 0x90 nanoslp syz-executor.6 18476 323535 32653 0 3 0x82 wait syz-executor.6 87776 506896 0 0 3 0x14200 bored sosplice 32653 507543 40295 0 3 0x82 wait syz-fuzzer 32653 428787 40295 0 3 0x4000082 nanoslp syz-fuzzer 32653 191497 40295 0 3 0x4000082 thrsleep syz-fuzzer 32653 176682 40295 0 3 0x4000082 wait syz-fuzzer 32653 104029 40295 0 3 0x4000082 thrsleep syz-fuzzer 32653 351535 40295 0 3 0x4000082 thrsleep syz-fuzzer 32653 93575 40295 0 3 0x4000082 wait syz-fuzzer 32653 412564 40295 0 3 0x4000082 thrsleep syz-fuzzer 32653 257665 40295 0 3 0x4000082 wait syz-fuzzer 32653 323250 40295 0 3 0x4000082 wait syz-fuzzer 32653 513502 40295 0 3 0x4000082 wait syz-fuzzer 32653 304075 40295 0 3 0x4000082 thrsleep syz-fuzzer 32653 420180 40295 0 3 0x4000082 thrsleep syz-fuzzer 32653 29529 40295 0 3 0x4000082 wait syz-fuzzer 32653 187704 40295 0 3 0x4000082 wait syz-fuzzer 32653 401690 40295 0 3 0x4000082 kqread syz-fuzzer 40295 15305 6684 0 3 0x10008a sigsusp ksh 6684 513149 88269 0 3 0x9a kqread sshd 13967 302528 1 0 3 0x100083 ttyin getty 88269 384304 1 0 3 0x88 kqread sshd 75292 7768 10605 73 3 0x1100090 kqread syslogd 10605 219239 1 0 3 0x100082 netio syslogd 80834 203177 1 0 3 0x100080 kqread resolvd 3081 4371 67514 77 3 0x100092 kqread dhcpleased 78014 502852 67514 77 3 0x100092 kqread dhcpleased 67514 352969 1 0 3 0x80 kqread dhcpleased 13233 171327 0 0 3 0x14200 bored smr 37074 12375 0 0 2 0x14200 zerothread 10692 99887 0 0 3 0x14200 aiodoned aiodoned 7356 371530 0 0 3 0x14200 syncer update 94070 154085 0 0 3 0x14200 cleaner cleaner 22526 367550 0 0 3 0x14200 reaper reaper 86998 102634 0 0 3 0x14200 pgdaemon pagedaemon 28332 228807 0 0 3 0x14200 bored viomb 45728 282956 0 0 3 0x40014200 acpi0 acpi0 81918 133489 0 0 3 0x40014200 idle1 16218 155592 0 0 3 0x14200 bored softnet3 70579 115041 0 0 3 0x14200 bored softnet2 31472 174572 0 0 3 0x14200 bored softnet1 70536 207516 0 0 3 0x14200 bored softnet0 72104 454699 0 0 3 0x14200 bored systqmp 82333 37164 0 0 3 0x14200 bored systq 34171 50410 0 0 3 0x40014200 bored softclock 60482 394034 0 0 3 0x40014200 idle0 1 129664 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31733 (syz-executor.4) thread 0xffff80002128d8a0 (4031) exclusive rwlock solock r = 0 (0xfffffd8079bf1610) #0 witness_lock+0x44d #1 solock_pair+0x9f solock sys/kern/uipc_socket2.c:352 [inline] #1 solock_pair+0x9f sys/kern/uipc_socket2.c:402 #2 unp_connect+0x395 sys/kern/uipc_usrreq.c:880 #3 sys_connect+0x207 sys/kern/uipc_syscalls.c:422 #4 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #4 syscall+0x606 sys/arch/amd64/amd64/trap.c:632 #5 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd805a7012c8) #0 witness_lock+0x44d #1 rw_enter+0x3e5 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8f sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324 #8 ufs_lookup+0x122c sys/ufs/ufs/ufs_lookup.c:582 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6f5 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 unp_connect+0x1ce sys/kern/uipc_usrreq.c:841 #13 sys_connect+0x207 sys/kern/uipc_syscalls.c:422 #14 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #14 syscall+0x606 sys/arch/amd64/amd64/trap.c:632 #15 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82cd16d8) #0 witness_lock+0x44d #1 unp_connect+0x1c6 sys/kern/uipc_usrreq.c:841 #2 sys_connect+0x207 sys/kern/uipc_syscalls.c:422 #3 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #3 syscall+0x606 sys/arch/amd64/amd64/trap.c:632 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 6412K 6419K 78643K 11407 0 pcb 13 12K 14K 78643K 17 0 rtable 246 7K 7K 78643K 3400 0 ifaddr 73 24K 25K 78643K 283 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 35K 78643K 128 0 ioctlops 0 0K 2K 78643K 527 0 iov 0 0K 36K 78643K 6284 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 8425 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 706 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 9698 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 24 89K 113K 78643K 36484 0 sigio 1 0K 0K 78643K 979 0 proc 56 78K 103K 78643K 3741 0 subproc 104 6K 6K 78643K 546 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 3201 0 in_multi 99 6K 7K 78643K 913 0 ether_multi 1 0K 0K 78643K 127 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 271 1208K 1208K 78643K 271 0 exec 0 0K 1K 78643K 6395 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 8 62K 64K 78643K 10 0 UVM amap 526 97K 993K 78643K 366327 0 UVM aobj 131 6K 6K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 4860 0 NDP 11 0K 2K 78643K 129 0 temp 124 5866K 5994K 78643K 88599 0 kqueue 13 20K 31K 78643K 2882 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 3534 0 3531 47 46 1 5 0 8 0 rtentry 112 525 0 409 4 0 4 4 0 8 0 unpcb 144 35273 0 35255 259 256 3 9 0 8 2 syncache 296 433 0 433 64 63 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 478 0 478 49 48 1 1 0 8 1 tcpcb 776 24695 0 24689 509 504 5 15 0 8 4 arp 120 99 0 80 1 0 1 1 0 8 0 ipq 40 71 0 70 23 22 1 1 0 8 0 ipqe 40 489 0 486 23 22 1 1 0 8 0 inpcb 368 58094 0 58082 579 574 5 19 0 8 3 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 136 153 0 124 2 0 2 2 0 8 0 kcovpl 48 42 0 34 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2094 0 1624 35 5 30 32 0 8 0 art_table 32 2095 0 1624 6 2 4 5 0 8 0 art_node 16 524 0 418 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 9695 0 9685 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 50404 0 48918 94 0 94 94 0 8 0 ffsino 272 50404 0 48918 100 0 100 100 0 8 0 nchpl 144 99444 0 97803 63 0 63 63 0 8 0 uvmvnodes 80 6549 0 0 134 0 134 134 0 8 0 vnodes 216 6549 0 0 364 0 364 364 0 8 0 namei 1024 324882 0 324882 7 6 1 2 0 8 1 percpumem 16 77 0 34 1 0 1 1 0 8 0 kstatmem 264 90 0 68 2 0 2 2 0 8 0 scxspl 216 305375 0 305375 103 102 1 8 0 8 1 plimitpl 152 6469 0 6445 68 67 1 2 0 8 0 sigapl 424 36706 0 36652 7 0 7 7 0 8 0 futexpl 64 352672 0 352670 11 10 1 1 0 8 0 knotepl 120 1990 0 0 18 5 13 16 0 8 0 kqueuepl 216 8792 0 8783 152 151 1 5 0 8 0 pipepl 320 10822 0 10794 282 276 6 13 0 8 3 fdescpl 496 36688 0 36653 7 2 5 6 0 8 0 filepl 152 269385 0 269145 414 399 15 22 0 8 5 lockfpl 104 3953 0 3951 5 4 1 2 0 8 0 lockfspl 48 1168 0 1166 1 0 1 1 0 8 0 sessionpl 144 57 0 41 1 0 1 1 0 8 0 pgrppl 48 1207 0 1191 1 0 1 1 0 8 0 ucredpl 104 42279 0 42261 1 0 1 1 0 8 0 zombiepl 144 36653 0 36652 1 0 1 1 0 8 0 processpl 1072 36706 0 36652 4 0 4 4 0 8 0 procpl 696 105486 0 105411 59 51 8 10 0 8 0 sosppl 168 516 0 515 56 55 1 1 0 8 0 sockpl 488 98668 0 98638 1616 1604 12 38 0 8 8 mcl64k 65536 50 0 0 6 3 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 90 0 0 2 0 2 2 0 8 0 mcl9k 9216 49 0 0 2 0 2 2 0 8 0 mcl8k 8192 57 0 0 4 1 3 3 0 8 0 mcl4k 4096 68 0 0 6 4 2 5 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 699 0 0 41 30 11 39 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 5807 0 0 300 0 300 300 0 8 0 bufpl 288 65738 0 59180 469 0 469 469 0 8 0 anonpl 24 3858463 0 3845656 264 156 108 137 0 186 0 amapchunkpl 152 2086411 0 2085533 9035 8994 41 4427 0 158 0 amappl16 200 79238 0 78884 350 327 23 44 0 8 0 amappl15 192 21 0 19 1 0 1 1 0 8 0 amappl14 184 260 0 246 2 1 1 2 0 8 0 amappl13 176 36 0 36 9 9 0 1 0 8 0 amappl12 168 37827 0 37789 2 0 2 2 0 8 0 amappl11 160 61 0 49 1 0 1 1 0 8 0 amappl10 152 86 0 68 1 0 1 1 0 8 0 amappl9 144 528 0 528 71 71 0 2 0 8 0 amappl8 136 1643 0 1351 11 0 11 11 0 8 0 amappl7 128 295 0 277 1 0 1 1 0 8 0 amappl6 120 961 0 936 2 1 1 2 0 8 0 amappl5 112 1079 0 1072 1 0 1 1 0 8 0 amappl4 104 1932 0 1889 2 0 2 2 0 8 0 amappl3 96 225092 0 225000 60 57 3 4 0 8 0 amappl2 88 38748 0 38668 4 2 2 3 0 8 0 amappl1 80 136983 0 136462 22 10 12 22 0 8 0 amappl 88 364120 0 363870 7 0 7 7 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 36688 0 36653 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 36688 0 36653 1 0 1 1 0 8 0 vmmpekpl 168 305968 0 305903 4 0 4 4 0 8 0 vmmpepl 168 2153942 0 2151230 529 394 135 152 0 357 3 vmsppl 464 36687 0 36653 7 2 5 6 0 8 0 rwobjpl 56 528574 0 520281 143 24 119 121 0 8 0 pdppl 4096 73384 0 73306 922 840 82 90 0 8 4 pvpl 32 10763542 0 10744547 1027 842 185 350 0 265 0 pmappl 248 36687 0 36653 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2573 0 1465 33 0 33 33 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827dc239) at panic+0x17b sys/kern/subr_prf.c:198 rw_enter(fffffd8079bf1600,1) at rw_enter+0x482 rw_enter_diag sys/kern/kern_rwlock.c:183 [inline] rw_enter(fffffd8079bf1600,1) at rw_enter+0x482 sys/kern/kern_rwlock.c:274 soisconnected(fffffd8079bf1bb0) at soisconnected+0x243 solock sys/kern/uipc_socket2.c:352 [inline] soisconnected(fffffd8079bf1bb0) at soisconnected+0x243 sys/kern/uipc_socket2.c:111 unp_connect2(fffffd8079bf15f8,fffffd8079bf1bb0) at unp_connect2+0xca unp_connect(fffffd8079bf15f8,fffffd806d4efa00,ffff80002128d8a0) at unp_connect+0x46d sys/kern/uipc_usrreq.c:908 sys_connect(ffff80002128d8a0,ffff80002e437800,ffff80002e437850) at sys_connect+0x207 sys/kern/uipc_syscalls.c:422 syscall(ffff80002e4378d0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4378d0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x44c1d4a1880, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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(ffffffff82cd14d0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cd14d0) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff80002128b770) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002128b770) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x796fca8708d0, count: 9 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e 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(ffffffff82cd14d0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cd14d0) at __mp_lock+0x129 sys/kern/kern_lock.c:147 syscall(ffff80002128b770) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002128b770) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x796fca8708d0, count: -6