kernel: page fault trap, code=10 Stopped at acpi_pdirpa+0xd55ea: uvm_fault(0xfffffd806c6b18b0, 0xe9779, 0, 1) -> e kernel: page fault trap, code=0 Stopped at db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax TID PID UID PRFLAGS PFLAGS CPU COMMAND *314402 89960 0 0 0x4000000 0K syz-executor 128512 78360 0 0 0x4000000 1 syz-executor db_read_bytes(e9779,1,ffff80003518dd24) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff80003518dfc0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff80003518dfc0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff80003518e298,fffffd807abfc5e8,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 sys/net/route.c:255 in_pcbselsrc(ffff80003518e388,fffffd806cc73320,fffffd807abfc558) at in_pcbselsrc+0x250 in_pcbconnect(fffffd807abfc558,fffffd806cc73300) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 tcp_connect(ffff8000015fc838,fffffd806cc73300) at tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 sys_connect(ffff8000ffff2cc8,ffff80003518e5b0,ffff80003518e500) at sys_connect+0x345 sys/kern/uipc_syscalls.c:422 end trace frame: 0xffff80003518e5a0, count: 0 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: uvm_fault(0xfffffd806c6b18b0, 0xe9779, 0, 1) -> e ddb{0}> trace db_read_bytes(e9779,1,ffff80003518dd24) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff80003518dfc0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff80003518dfc0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff80003518e298,fffffd807abfc5e8,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 sys/net/route.c:255 in_pcbselsrc(ffff80003518e388,fffffd806cc73320,fffffd807abfc558) at in_pcbselsrc+0x250 in_pcbconnect(fffffd807abfc558,fffffd806cc73300) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 tcp_connect(ffff8000015fc838,fffffd806cc73300) at tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 sys_connect(ffff8000ffff2cc8,ffff80003518e5b0,ffff80003518e500) at sys_connect+0x345 sys/kern/uipc_syscalls.c:422 syscall(ffff80003518e5b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003518e5b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9438734e5b0, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003518dd10 rbx 0x1 rdx 0xffff8000015b0340 rcx 0xffff8000ffff2cc8 rax 0xffffffff83467ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003518de40 r9 0x8080808080808080 r10 0xe5157acfae411663 r11 0x8d0fbca5a403ffe6 r12 0x1 r13 0x1 r14 0xffff80003518dd25 r15 0xe977a acpi_pdirpa+0xd55eb rip 0xffffffff8291ff10 db_read_bytes+0x110 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80003518dcb0 ss 0x10 db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax ddb{0}> show proc PROC (syz-executor) tid=314402 pid=89960 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff3970,0xffffffff8350c8a0 process=0xffff8000ffff6458 user=0xffff800035189000, vmspace=0xfffffd806c6b18b0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 89960 499130 39641 0 2 0 syz-executor *89960 314402 39641 0 7 0x4000000 syz-executor 78360 267042 12669 0 2 0 syz-executor 78360 128512 12669 0 7 0x4000000 syz-executor 70934 500504 89773 0 2 0 syz-executor 70934 204298 89773 0 3 0x4000080 kqread syz-executor 59104 397356 25805 0 2 0 syz-executor 59104 272937 25805 0 3 0x4000080 fsleep syz-executor 22343 267984 74128 0 2 0 syz-executor 22343 12453 74128 0 3 0x4000080 fsleep syz-executor 39641 458100 89997 0 2 0x482 syz-executor 95298 517507 89997 0 3 0x82 wait syz-executor 89773 443042 89997 0 2 0x482 syz-executor 12669 184182 89997 0 2 0x482 syz-executor 74128 100892 89997 0 2 0x482 syz-executor 58852 355317 89997 0 2 0x482 syz-executor 25805 518678 89997 0 2 0x482 syz-executor 44050 446549 1 0 3 0x100083 ttyin getty 1511 9807 0 0 3 0x14200 bored sosplice 89997 517262 48361 0 3 0x82 wait syz-executor 48361 312650 44363 0 3 0x10008a sigsusp ksh 44363 181693 89475 0 3 0x98 kqread sshd-session 89475 503857 20822 0 3 0x92 kqread sshd-session 20822 155282 1 0 3 0x88 kqread sshd 70763 397952 32357 74 3 0x1100092 bpf pflogd 32357 107242 1 0 3 0x80 sbwait pflogd 59213 397253 12344 73 3 0x1100090 kqread syslogd 12344 121831 1 0 3 0x100082 sbwait syslogd 72241 172378 1 0 3 0x100080 kqread resolvd 71358 262004 86896 77 3 0x100092 kqread dhcpleased 71558 518308 86896 77 3 0x100092 kqread dhcpleased 86896 247244 1 0 3 0x80 kqread dhcpleased 22247 183755 0 0 3 0x14200 bored smr 82328 376409 0 0 2 0x14200 zerothread 51118 109298 0 0 3 0x14200 aiodoned aiodoned 83548 253974 0 0 3 0x14200 syncer update 10415 450443 0 0 3 0x14200 cleaner cleaner 12119 96652 0 0 3 0x14200 reaper reaper 79872 315637 0 0 3 0x14200 pgdaemon pagedaemon 65690 451519 0 0 3 0x14200 bored viomb 59943 206223 0 0 3 0x40014200 acpi0 acpi0 6553 149309 0 0 3 0x40014200 idle1 33621 473023 0 0 3 0x14200 bored softnet3 17553 182701 0 0 3 0x14200 bored softnet2 59191 454832 0 0 3 0x14200 bored softnet1 34320 308618 0 0 3 0x14200 bored softnet0 67196 164431 0 0 3 0x14200 bored systqmp 56000 402790 0 0 3 0x14200 bored systq 90292 304069 0 0 3 0x14200 tmoslp softclockmp 74288 317076 0 0 3 0x40014200 tmoslp softclock 54812 461947 0 0 3 0x40014200 idle0 1 182519 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 89960 (syz-executor) thread 0xffff8000ffff2cc8 (314402) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff834febe8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rt_clone+0x72 #2 route_mpath+0x170 rt_match sys/net/route.c:360 [inline] #2 route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] #2 route_mpath+0x170 sys/net/route.c:255 #3 in_pcbselsrc+0x250 #4 in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 #5 tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 #6 sys_connect+0x345 sys/kern/uipc_syscalls.c:422 #7 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #7 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff834ee9d0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 sys_connect+0x27f sys/kern/uipc_syscalls.c:413 #2 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #2 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 14319K 14577K 166960K 11846 0 pcb 17 12K 12K 166960K 68 0 rtable 216 7K 8K 166960K 1347 0 pf 36 18K 21K 166960K 159 0 ifaddr 41 7K 8K 166960K 206 0 ifgroup 55 2K 2K 166960K 250 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 164 0 ioctlops 0 0K 4K 166960K 1640 0 iov 0 0K 16K 166960K 24 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 86K 166960K 2209 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 76 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 17 61K 85K 166960K 1065 0 sigio 0 0K 0K 166960K 11 0 proc 72 91K 128K 166960K 1698 0 subproc 104 6K 6K 166960K 663 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 34 0 in_multi 89 6K 7K 166960K 457 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 883 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 73K 91K 166960K 9093 0 UVM aobj 11 2K 2K 166960K 11 0 pinsyscall 42 84K 100K 166960K 3084 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 12 0K 2K 166960K 140 0 temp 50 6817K 6881K 166960K 15888 0 kqueue 15 24K 26K 166960K 93 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 125 0 121 1 0 1 1 0 8 0 rtentry 112 473 0 376 4 0 4 4 0 8 0 unpcb 144 292 0 272 4 2 2 2 0 8 1 syncache 336 5 0 5 3 3 0 1 0 8 0 tcpcb 808 208 0 202 10 9 1 7 0 8 0 arp 120 79 0 61 1 0 1 1 0 8 0 inpcb 336 738 0 728 13 11 2 7 0 8 0 nd6 136 117 0 96 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 51 0 43 1 0 1 1 0 8 0 ppxss 1168 4 0 4 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 47 0 47 2 2 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pfstitem 24 86 0 52 1 0 1 1 0 8 0 pfstkey 128 87 0 53 2 0 2 2 0 8 0 pfstate 376 86 0 53 4 0 4 4 0 8 0 pfrule 1344 22 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1848 0 1442 31 5 26 29 0 8 0 art_table 32 1850 0 1442 4 0 4 4 0 8 0 art_node 16 456 0 370 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 1 0 1 1 0 8 0 semapl 112 73 0 65 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 22 0 5 3 0 3 3 0 8 0 dino2pl 256 2279 0 702 99 0 99 99 0 8 0 ffsino 272 2279 0 702 106 0 106 106 0 8 0 nchpl 144 3006 0 1271 65 0 65 65 0 8 0 uvmvnodes 80 3116 0 0 64 0 64 64 0 8 0 vnodes 216 3116 0 0 174 0 174 174 0 8 0 namei 1024 13248 0 13248 2 1 1 2 0 8 1 percpumem 16 96 0 50 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 124 0 100 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 23672 0 23672 11 10 1 8 1 8 1 plimitpl 152 110 0 92 1 0 1 1 0 8 0 sigapl 424 1281 0 1231 8 2 6 7 0 8 0 futexpl 64 5756 0 5754 2 1 1 1 0 8 0 knotepl 120 476 0 0 14 0 14 14 0 8 0 kqueuepl 216 139 0 128 1 0 1 1 0 8 0 pipepl 320 312 0 285 5 2 3 5 0 8 0 fdescpl 496 1262 0 1231 6 1 5 5 0 8 0 filepl 152 5713 0 5457 16 5 11 14 0 8 0 lockfpl 104 160 0 158 1 0 1 1 0 8 0 lockfspl 48 65 0 63 1 0 1 1 0 8 0 sessionpl 144 68 0 59 1 0 1 1 0 8 0 pgrppl 48 124 0 107 1 0 1 1 0 8 0 ucredpl 104 458 0 444 1 0 1 1 0 8 0 zombiepl 144 1234 0 1231 1 0 1 1 0 8 0 processpl 1160 1281 0 1231 4 0 4 4 0 8 0 procpl 648 1920 0 1865 6 0 6 6 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 4 0 4 1 1 0 1 0 8 0 sockpl 664 1160 0 1126 15 11 4 12 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 222 0 0 28 0 28 28 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 394 0 0 24 0 24 24 0 8 0 bufpl 280 6985 0 812 442 0 442 442 0 8 0 anonpl 24 240227 0 236744 80 20 60 74 0 185 29 amapchunkpl 152 28475 0 27981 35 4 31 33 0 158 12 amappl16 200 5131 0 5112 28 24 4 14 0 8 3 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 214 0 202 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 2 0 1 0 8 0 amappl12 168 2486 0 2455 3 1 2 2 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 171 0 171 1 1 0 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 168 0 156 1 0 1 1 0 8 0 amappl6 120 548 0 547 1 0 1 1 0 8 0 amappl5 112 293 0 281 1 0 1 1 0 8 0 amappl4 104 406 0 387 1 0 1 1 0 8 0 amappl3 96 5419 0 5307 4 0 4 4 0 8 0 amappl2 88 1192 0 1123 2 0 2 2 0 8 0 amappl1 80 12731 0 12161 17 4 13 14 0 8 0 amappl 88 8461 0 8289 5 0 5 5 0 92 0 dma16384 16384 2 0 2 1 0 1 1 0 8 1 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 7 0 7 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 10 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1263 0 1232 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1263 0 1232 1 0 1 1 0 8 0 vmmpekpl 168 11990 0 11935 4 0 4 4 0 8 0 vmmpepl 168 85124 0 83276 97 11 86 92 0 357 4 vmsppl 440 1262 0 1232 6 2 4 5 0 8 0 rwobjpl 56 30614 0 26564 59 1 58 58 0 8 0 pdppl 4096 2533 0 2464 145 72 73 81 0 8 4 pvpl 32 32149 0 0 261 1 260 260 0 265 0 pmappl 248 1262 0 1232 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 477 0 106 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_read_bytes(e9779,1,ffff80003518dd24) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff80003518dfc0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff80003518dfc0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff80003518e298,fffffd807abfc5e8,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(fffffd807abfc5d0,fffffd806cc73324,0,0) at route_mpath+0x170 sys/net/route.c:255 in_pcbselsrc(ffff80003518e388,fffffd806cc73320,fffffd807abfc558) at in_pcbselsrc+0x250 in_pcbconnect(fffffd807abfc558,fffffd806cc73300) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 tcp_connect(ffff8000015fc838,fffffd806cc73300) at tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 sys_connect(ffff8000ffff2cc8,ffff80003518e5b0,ffff80003518e500) at sys_connect+0x345 sys/kern/uipc_syscalls.c:422 syscall(ffff80003518e5b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80003518e5b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9438734e5b0, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff834fe9e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834fe9e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 vn_kqfilter(fffffd806bc01018,fffffd8077771a68) at vn_kqfilter+0x35 sys/kern/vfs_vnops.c:620 kqueue_register(fffffd806e878438,ffff80002f3bc080,0,ffff8000ffff3970) at kqueue_register+0xdb1 filter_attach sys/kern/kern_event.c:866 [inline] kqueue_register(fffffd806e878438,ffff80002f3bc080,0,ffff8000ffff3970) at kqueue_register+0xdb1 sys/kern/kern_event.c:1348 pselregister(ffff8000ffff3970,ffff80002f3bc330,ffff80002a76f000,40,ffff80002f3bc3b4,0) at pselregister+0x135 sys/kern/sys_generic.c:763 dopselect(ffff8000ffff3970,40,20000000,0,0,0,7107d53ba1a7ec62,ffff8000ffff3970) at dopselect+0x503 sys/kern/sys_generic.c:656 sys_select(ffff8000ffff3970,ffff80002f3bc5b0,ffff80002f3bc500) at sys_select+0x1e7 sys/kern/sys_generic.c:555 syscall(ffff80002f3bc5b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002f3bc5b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x50caa2369d0, count: 3 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:158 __mp_lock(ffffffff834fe9e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834fe9e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 vn_kqfilter(fffffd806bc01018,fffffd8077771a68) at vn_kqfilter+0x35 sys/kern/vfs_vnops.c:620 kqueue_register(fffffd806e878438,ffff80002f3bc080,0,ffff8000ffff3970) at kqueue_register+0xdb1 filter_attach sys/kern/kern_event.c:866 [inline] kqueue_register(fffffd806e878438,ffff80002f3bc080,0,ffff8000ffff3970) at kqueue_register+0xdb1 sys/kern/kern_event.c:1348 pselregister(ffff8000ffff3970,ffff80002f3bc330,ffff80002a76f000,40,ffff80002f3bc3b4,0) at pselregister+0x135 sys/kern/sys_generic.c:763 dopselect(ffff8000ffff3970,40,20000000,0,0,0,7107d53ba1a7ec62,ffff8000ffff3970) at dopselect+0x503 sys/kern/sys_generic.c:656 sys_select(ffff8000ffff3970,ffff80002f3bc5b0,ffff80002f3bc500) at sys_select+0x1e7 sys/kern/sys_generic.c:555 syscall(ffff80002f3bc5b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002f3bc5b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x50caa2369d0, count: -12