uvm_fault(0xfffffd805f7dfd80, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8304dc08 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003a81cf20 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8304dc08 Starting stack trace... panic(ffffffff833a583b) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003a81ce70) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001661000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80003b01f788) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003b01f788) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003a81d020) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd807bce98c8,81,fffffd80097fb208,ffff80003b01f788) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b91bea0,ffff80003b01f788) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b91bea0,ffff80003b01f788) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b91bea0,ffff80003b01f788) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b91bea0,ffff80003b01f788) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003b01f788) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003b01f788,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003b01f788,ffff80003a81d390,ffff80003a81d2e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a81d390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a81d390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6ff295e71d10, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *316079 57122 0 0 0 1 syz-executor 384396 67182 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74f3bbb80b00, count: 14 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd805f7dfd80, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74f3bbb80b00, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a437e50 rbx 0 rdx 0 rcx 0xffff80003c458d20 rax 0x2a r8 0xffff80002a437d80 r9 0x1 r10 0x676aef3c6bb5d64c r11 0x3eada440ef9d8be8 r12 0 r13 0xffffffff827d0e88 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff8286e4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a437dd0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=316079 pid=57122 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003b01ea90,0xffff8000ffff22b8 process=0xffff80002a29c9d8 user=0xffff80002a432000, vmspace=0xfffffd805f7df5e0 estcpu=36, cpticks=3, pctcpu=0.0, user=2, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 32564 453045 94012 0 2 0 syz-executor 32564 389260 94012 0 3 0x4000080 fsleep syz-executor *57122 316079 23363 0 7 0 syz-executor 57122 415859 23363 0 3 0x4000000 biowait syz-executor 19065 54612 70867 -1 3 0x90 nanoslp syz-executor 19065 513386 70867 -1 3 0x4000090 kqsel syz-executor 19065 164386 70867 -1 3 0x4000090 fsleep syz-executor 84168 112633 45023 0 2 0 syz-executor 84168 210306 45023 0 3 0x4000080 fsleep syz-executor 84168 366799 45023 0 3 0x4000080 fsleep syz-executor 8512 182308 75742 0 3 0x80 nanoslp syz-executor 8512 245350 75742 0 3 0x4000080 kqsel syz-executor 8512 305859 75742 0 2 0x4000000 syz-executor 8512 311067 75742 0 3 0x4000080 fsleep syz-executor 37888 299064 77430 0 3 0x80 nanoslp syz-executor 37888 138331 77430 0 3 0x4000080 ttyretype syz-executor 87606 224551 83644 0 3 0x80 nanoslp syz-executor 87606 97256 83644 0 3 0x4000080 sbwait syz-executor 87606 468225 83644 0 3 0x4000080 fsleep syz-executor 5849 440492 0 0 3 0x14200 acct acct 94012 204081 66367 0 3 0x82 nanoslp syz-executor 98582 255734 0 0 3 0x14280 nfsidl nfsio 79128 302454 0 0 3 0x14280 nfsidl nfsio 12539 367692 0 0 3 0x14280 nfsidl nfsio 28238 72435 0 0 3 0x14280 nfsidl nfsio 97163 61571 0 0 3 0x14280 nfsidl nfsio 89754 407118 0 0 3 0x14280 nfsidl nfsio 34526 103298 0 0 3 0x14280 nfsidl nfsio 36367 56954 0 0 3 0x14280 nfsidl nfsio 87601 342802 0 0 3 0x14280 nfsidl nfsio 45139 189111 0 0 3 0x14280 nfsidl nfsio 73285 304624 0 0 3 0x14280 nfsidl nfsio 43081 190118 0 0 3 0x14280 nfsidl nfsio 68143 231042 0 0 3 0x14280 nfsidl nfsio 30823 335962 0 0 3 0x14280 nfsidl nfsio 38098 215338 0 0 3 0x14280 nfsidl nfsio 23551 386749 0 0 3 0x14280 nfsidl nfsio 95679 455221 0 0 3 0x14280 nfsidl nfsio 82154 328169 0 0 3 0x14280 nfsidl nfsio 99325 109925 0 0 3 0x14280 nfsidl nfsio 1334 202265 0 0 3 0x14280 nfsidl nfsio 77430 417039 66367 0 3 0x82 nanoslp syz-executor 19929 173133 1 0 3 0x80 nanoslp init 83644 214622 66367 0 3 0x82 nanoslp syz-executor 75742 62731 66367 0 3 0x82 nanoslp syz-executor 23363 117310 66367 0 3 0x82 nanoslp syz-executor 9271 59721 66367 0 3 0x82 nanoslp syz-executor 70867 371966 66367 0 3 0x82 nanoslp syz-executor 88244 473956 0 0 3 0x14200 bored sosplice 45023 306201 66367 0 2 0x3 syz-executor 66367 211297 10389 0 3 0x82 kqread syz-executor 10389 467091 63060 0 3 0x10008a sigsusp ksh 63060 276415 81079 0 3 0x98 kqread sshd-session 81079 495980 51924 0 3 0x92 kqread sshd-session 51924 396648 1 0 3 0x88 kqread sshd 99116 265821 9372 74 3 0x1100092 bpf pflogd 9372 466032 1 0 3 0x80 sbwait pflogd 19004 506194 37652 73 3 0x1100090 kqread syslogd 37652 207984 1 0 3 0x100082 sbwait syslogd 32896 414942 1 0 3 0x100080 kqread resolvd 38019 372634 45805 77 3 0x100092 kqread dhcpleased 49940 517161 45805 77 3 0x100092 kqread dhcpleased 45805 436650 1 0 3 0x80 kqread dhcpleased 46019 360494 0 0 3 0x14200 bored smr 29542 189285 0 0 3 0x14200 pgzero zerothread 91716 486867 0 0 3 0x14200 aiodoned aiodoned 58401 154439 0 0 3 0x14200 syncer update 38246 339714 0 0 3 0x14200 cleaner cleaner 67182 384396 0 0 7 0x14200 reaper 35613 31080 0 0 3 0x14200 pgdaemon pagedaemon 14011 485741 0 0 3 0x14200 bored viomb 1608 296011 0 0 3 0x40014200 acpi0 acpi0 50323 520283 0 0 3 0x40014200 idle1 86441 361647 0 0 3 0x14200 bored softnet7 2243 2930 0 0 3 0x14200 bored softnet6 11090 104011 0 0 3 0x14200 bored softnet5 46080 84098 0 0 3 0x14200 bored softnet4 20442 358983 0 0 3 0x14200 bored softnet3 96186 430197 0 0 3 0x14200 bored softnet2 25641 323817 0 0 3 0x14200 bored softnet1 4678 455767 0 0 3 0x14200 netlock softnet0 76981 73098 0 0 3 0x14200 smrbar systqmp 969 412202 0 0 3 0x14200 bored systq 24554 387828 0 0 3 0x14200 tmoslp softclockmp 11421 278881 0 0 3 0x40014200 tmoslp softclock 54150 64297 0 0 3 0x40014200 idle0 1 416818 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 57122 (syz-executor) thread 0xffff8000ffff3768 (415859) Process 67182 (reaper) thread 0xffff8000ffffc7d0 (384396) Process 76981 (systqmp) thread 0xffff8000ffffe530 (73098) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10252 11064K 15218K 166960K 16363 0 pcb 18 18K 34K 166960K 1296 0 rtable 211 14K 15K 166960K 939 0 pf 33 17K 82K 166960K 565 0 ifaddr 36 7K 10K 166960K 304 0 ifgroup 51 2K 3K 166960K 573 0 sysctl 4 1K 9K 166960K 39 0 counters 66 36K 38K 166960K 612 0 ioctlops 0 0K 8K 166960K 2503 0 iov 1 16K 32K 166960K 441 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1546 97K 98K 166960K 5240 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 61 0 VM map 2 1K 1K 166960K 2 0 sem 25 20K 21K 166960K 124 0 dirhash 12 2K 2K 166960K 90 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 4789 0 sigio 0 0K 0K 166960K 160 0 proc 63 99K 196K 166960K 1337 0 subproc 72 4K 4K 166960K 174 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 711 0 in_multi 67 4K 7K 166960K 333 0 ether_multi 1 0K 0K 166960K 21 0 mrt 2 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 1275 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 260 157K 187K 166960K 45583 0 UVM aobj 54 3K 3K 166960K 61 0 pinsyscall 42 84K 107K 166960K 6226 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 362 0 NDP 11 0K 2K 166960K 236 0 temp 85 8652K 8908K 166960K 216722 0 kqueue 14 22K 33K 166960K 990 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 672 0 668 8 7 1 3 0 8 0 rtentry 176 323 0 252 5 0 5 5 0 8 0 unpcb 144 3079 0 3058 14 12 2 4 0 8 1 syncache 336 23 0 23 12 11 1 1 0 8 1 tcpqe 32 11 0 11 6 5 1 1 0 8 1 tcpcb 736 1481 0 1471 28 26 2 7 0 8 1 arp 128 47 0 38 1 0 1 1 0 8 0 inpcb 328 5404 0 5387 52 45 7 10 0 8 5 nd6 144 57 0 42 1 0 1 1 0 8 0 pkpcb 40 41 0 41 8 7 1 1 0 8 1 kcovpl 48 19 0 11 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 216 0 216 5 4 1 1 0 8 1 pppxif 1504 24 0 24 10 9 1 2 0 8 1 pffrag 232 54 0 37 2 0 2 2 0 482 0 pffrnode 88 39 0 22 1 0 1 1 0 8 0 pffrent 40 119 0 102 1 0 1 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 3 3 3 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 322 0 171 1 0 1 1 0 8 0 pfstkey 128 322 0 171 5 0 5 5 0 8 0 pfstate 384 321 0 171 16 0 16 16 0 8 0 pfrule 1344 26 0 21 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 5 0 1 5 1 4 5 0 8 0 art_heap4 256 1272 0 938 35 5 30 30 0 8 0 art_table 40 1277 0 939 5 0 5 5 0 8 0 art_node 32 319 0 259 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 6 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 116 0 93 1 0 1 1 0 8 0 shmpl 112 58 0 7 2 0 2 2 0 8 0 dirhash 1024 70 0 53 3 0 3 3 0 8 0 dino2pl 256 10599 0 9065 98 1 97 97 0 8 0 ffsino 296 10599 0 9065 119 0 119 119 0 8 0 nchpl 144 17268 0 16626 64 39 25 64 0 8 0 rtmask 32 42 0 42 8 7 1 1 0 8 1 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 61691 0 61690 7 6 1 3 0 8 0 percpumem 16 321 0 273 1 0 1 1 0 8 0 kstatmem 264 400 0 372 5 2 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 20 0 20 8 7 1 1 0 8 1 scxspl 216 110470 0 110469 20 18 2 8 1 8 1 plimitpl 152 1132 0 1112 1 0 1 1 0 8 0 sigapl 424 5069 0 4993 9 0 9 9 0 8 0 knotepl 120 693 0 0 19 0 19 19 0 8 0 kqueuepl 224 2198 0 2183 27 25 2 5 0 8 0 pipepl 344 880 0 853 20 10 10 14 0 8 6 fdescpl 528 5008 0 4976 3 0 3 3 0 8 0 filepl 160 36241 0 36000 42 26 16 22 0 8 1 lockfpl 104 2580 0 2564 5 4 1 3 0 8 0 lockfspl 48 768 0 757 1 0 1 1 0 8 0 sessionpl 144 57 0 49 1 0 1 1 0 8 0 pgrppl 48 289 0 273 1 0 1 1 0 8 0 ucredpl 104 6161 0 6147 1 0 1 1 0 8 0 zombiepl 144 7698 0 7697 2 1 1 1 0 8 0 processpl 1248 5069 0 4993 6 0 6 6 0 8 0 procpl 664 13194 0 13106 8 0 8 8 0 8 0 sosppl 168 39 0 39 10 9 1 1 0 8 1 sockpl 752 9411 0 9368 64 52 12 21 0 8 7 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 65 0 0 8 0 8 8 0 8 0 mtagpl 96 84 0 0 3 0 3 3 0 8 0 mbufpl 256 436 0 0 22 0 22 22 0 8 0 bufpl 280 43844 0 37701 440 0 440 440 0 8 0 anonpl 32 16219 0 0 132 1 131 131 0 246 0 amapchunkpl 152 158542 0 157848 66 30 36 37 0 158 6 amappl16 200 18454 0 18277 149 126 23 37 0 8 6 amappl15 192 42 0 42 1 1 0 1 0 8 0 amappl14 184 183 0 172 1 0 1 1 0 8 0 amappl13 176 43 0 43 1 1 0 1 0 8 0 amappl12 168 5861 0 5830 4 2 2 3 0 8 0 amappl11 160 64 0 49 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 257 0 256 2 1 1 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 182 0 170 1 0 1 1 0 8 0 amappl6 120 312 0 309 1 0 1 1 0 8 0 amappl5 112 176 0 165 1 0 1 1 0 8 0 amappl4 104 404 0 384 1 0 1 1 0 8 0 amappl3 96 32871 0 32753 5 1 4 4 0 8 0 amappl2 88 990 0 925 2 0 2 2 0 8 0 amappl1 80 32108 0 31524 20 5 15 15 0 8 0 amappl 88 43764 0 43574 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma16384 16384 3 0 3 2 2 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 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 128 261 0 261 7 7 0 1 0 8 0 dma64 64 8 0 8 3 3 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 60 0 7 1 0 1 1 0 8 0 uaddrrnd 24 5008 0 4976 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5008 0 4976 1 0 1 1 0 8 0 vmmpekpl 168 40425 0 40369 4 0 4 4 0 8 1 vmmpepl 168 323936 0 321723 151 41 110 121 0 357 0 vmsppl 488 5007 0 4976 6 1 5 5 0 8 0 rwobjpl 80 90166 0 83103 163 12 151 156 0 8 0 pdppl 4096 10023 0 9952 154 81 73 85 0 8 2 pvpl 32 26107 0 0 210 1 209 209 0 265 0 pmappl 256 5007 0 4976 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 407 0 142 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83852ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8390f210) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390f210) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a267b80,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8390f210) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390f210) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 mtx_enter_try(ffffffff83791d40) at mtx_enter_try+0x56 sys/kern/kern_lock.c:-1 mtx_enter(ffffffff83791d40) at mtx_enter+0x62 sys/kern/kern_lock.c:261 msleep_nsec(ffffffff83791d78,ffffffff83791d40,4,ffffffff83380fba,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 end trace frame: 0xffff80002a267f40, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83852ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff8390f210) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390f210) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a267b80,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8390f210) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390f210) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 mtx_enter_try(ffffffff83791d40) at mtx_enter_try+0x56 sys/kern/kern_lock.c:-1 mtx_enter(ffffffff83791d40) at mtx_enter+0x62 sys/kern/kern_lock.c:261 msleep_nsec(ffffffff83791d78,ffffffff83791d40,4,ffffffff83380fba,ffffffffffffffff) at msleep_nsec+0x2d3 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc7d0) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74f3bbb80b00, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x74f3bbb80b00, count: -1