uvm_fault(0xfffffd806aad4208, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81c245a8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a269430 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81c245a8 Starting stack trace... panic(ffffffff833e8521) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a269380) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001728000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff80002a263238) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80002a263238) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a269530) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e017100,81,fffffd80097fd680,ffff80002a263238) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c25fbc0,ffff80002a263238) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c25fbc0,ffff80002a263238) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c25fbc0,ffff80002a263238) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c25fbc0,ffff80002a263238) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a263238) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a263238,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a263238,ffff80002a2698a0,ffff80002a2697f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2698a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2698a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b88161cd10, 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 94932 10876 0 0 0 0 syz-executor *373378 75813 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x76e5fd650ad0, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806aad4208, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x76e5fd650ad0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c007e60 rbx 0 rdx 0 rcx 0xffff80002a262fa0 rax 0x2a r8 0xffff80003c007d90 r9 0x1 r10 0x96112510ce7fe4c2 r11 0x3ba1bd3616d4333d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82e954c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c007de0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=373378 pid=75813 tcnt=3 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=0xffff80003c00b4f0,0xffff80002a262a80 process=0xffff80003c4af050 user=0xffff80003c002000, vmspace=0xfffffd806aad45d8 estcpu=36, cpticks=10, pctcpu=0.0, user=7, sys=2, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10876 94932 47889 0 7 0 syz-executor 10876 472128 47889 0 2 0x4000000 syz-executor 59950 234684 19518 0 3 0x80 nanoslp syz-executor 59950 272596 19518 0 3 0x4000080 kqsel syz-executor 59950 29061 19518 0 3 0x4000080 fsleep syz-executor *75813 373378 51846 0 7 0 syz-executor 75813 92075 51846 0 3 0x4000080 fsleep syz-executor 75813 313886 51846 0 3 0x4000080 fsleep syz-executor 52361 312442 26855 -1 3 0x90 nanoslp syz-executor 52361 398202 26855 -1 3 0x4000090 kqsel syz-executor 52361 313723 26855 -1 3 0x4000090 fsleep syz-executor 47029 353006 15834 0 2 0 syz-executor 47029 90339 15834 0 3 0x4000080 fsleep syz-executor 47029 7543 15834 0 3 0x4000080 fsleep syz-executor 30420 461958 20614 0 3 0x82 nanoslp syz-executor 51846 97500 20614 0 3 0x82 nanoslp syz-executor 62224 158542 20614 0 3 0x82 wait syz-executor 15834 296851 20614 0 3 0x82 nanoslp syz-executor 19518 71847 20614 0 3 0x82 nanoslp syz-executor 68224 446814 1 0 3 0x100083 ttyopn getty 26855 101463 20614 0 3 0x82 nanoslp syz-executor 47889 448357 20614 0 3 0x82 nanoslp syz-executor 88730 515386 20614 0 3 0x2 biowait syz-executor 25978 173922 0 0 3 0x14280 nfsidl nfsio 38066 265536 0 0 3 0x14280 nfsidl nfsio 9495 408774 0 0 3 0x14280 nfsidl nfsio 73704 92262 0 0 3 0x14280 nfsidl nfsio 48095 456423 0 0 3 0x14280 nfsidl nfsio 47031 395003 0 0 3 0x14280 nfsidl nfsio 5702 215810 0 0 3 0x14280 nfsidl nfsio 79170 301381 0 0 3 0x14280 nfsidl nfsio 6130 259022 0 0 3 0x14280 nfsidl nfsio 17856 82410 0 0 3 0x14280 nfsidl nfsio 66733 58081 0 0 3 0x14280 nfsidl nfsio 55994 111701 0 0 3 0x14280 nfsidl nfsio 78997 233819 0 0 3 0x14280 nfsidl nfsio 59824 474190 0 0 3 0x14280 nfsidl nfsio 22600 244803 0 0 3 0x14280 nfsidl nfsio 70286 252415 0 0 3 0x14280 nfsidl nfsio 10829 356847 0 0 3 0x14280 nfsidl nfsio 78031 214241 0 0 3 0x14280 nfsidl nfsio 48788 293317 0 0 3 0x14280 nfsidl nfsio 93416 452818 0 0 3 0x14280 nfsidl nfsio 20614 373849 19711 0 3 0x82 kqread syz-executor 19711 460077 59433 0 3 0x10008a sigsusp ksh 59433 11870 89743 0 3 0x98 kqread sshd-session 89743 272835 31821 0 3 0x92 kqread sshd-session 31821 262631 1 0 3 0x88 kqread sshd 4356 449341 72325 74 3 0x1100092 bpf pflogd 72325 126319 1 0 3 0x80 sbwait pflogd 16342 514233 83904 73 3 0x1100090 kqread syslogd 83904 254312 1 0 3 0x100082 sbwait syslogd 93519 146590 1 0 3 0x100080 kqread resolvd 69796 336188 0 0 3 0x14200 bored smr 39388 268394 0 0 2 0x14200 zerothread 299 291277 0 0 3 0x14200 aiodoned aiodoned 25764 376353 0 0 3 0x14200 syncer update 57967 210070 0 0 3 0x14200 cleaner cleaner 1059 361176 0 0 3 0x14200 reaper reaper 58143 12492 0 0 3 0x14200 pgdaemon pagedaemon 28092 88967 0 0 3 0x14200 bored viomb 41980 108925 0 0 3 0x40014200 acpi0 acpi0 66084 321644 0 0 3 0x40014200 idle1 23997 115940 0 0 3 0x14200 bored softnet1 15963 288713 0 0 3 0x14200 netlock softnet0 89587 355163 0 0 2 0x40014200 systqmp 71444 432495 0 0 3 0x14200 bored systq 7912 23555 0 0 3 0x14200 tmoslp softclockmp 93472 266362 0 0 3 0x40014200 tmoslp softclock 38301 356392 0 0 3 0x40014200 idle0 1 368862 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 88730 (syz-executor) thread 0xffff80003c00a560 (515386) exclusive rrwlock inode r = 0 (0xfffffd8062e02910) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e938c90) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11121 12218K 13959K 166960K 16710 0 pcb 17 18K 20K 166960K 1626 0 rtable 246 14K 15K 166960K 2051 0 pf 39 18K 22K 166960K 652 0 ifaddr 38 10K 13K 166960K 436 0 ifgroup 64 2K 3K 166960K 864 0 sysctl 4 1K 9K 166960K 110 0 counters 72 37K 38K 166960K 936 0 ioctlops 0 0K 4K 166960K 2907 0 iov 0 0K 24K 166960K 488 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1504 95K 95K 166960K 5179 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 29 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 489 0 dirhash 12 2K 3K 166960K 132 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 354K 166960K 6247 0 sigio 0 0K 0K 166960K 235 0 proc 67 83K 180K 166960K 1719 0 subproc 72 4K 4K 166960K 275 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 993 0 in_multi 68 5K 7K 166960K 519 0 ether_multi 1 0K 0K 166960K 59 0 mrt 1 0K 0K 166960K 41 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 1841 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 15 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 231 128K 175K 166960K 55777 0 UVM aobj 44 38K 42K 166960K 60 0 pinsyscall 36 72K 106K 166960K 7991 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 475 0 NDP 13 0K 2K 166960K 345 0 temp 87 8684K 8806K 166960K 313879 0 kqueue 8 14K 34K 166960K 1349 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 120 821 0 820 8 7 1 3 0 8 0 rtentry 176 618 0 531 6 1 5 6 0 8 0 unpcb 144 4493 0 4483 37 33 4 10 0 8 3 syncache 336 41 0 41 11 11 0 1 0 8 0 tcpqe 32 60 0 60 7 7 0 1 0 8 0 tcpcb 736 2268 0 2259 41 39 2 7 0 8 1 arp 136 92 0 74 1 0 1 1 0 8 0 inpcb 328 7599 0 7588 58 51 7 15 0 8 5 nd6 152 101 0 82 2 0 2 2 0 8 0 pkpcb 40 48 0 48 9 8 1 1 0 8 1 kcovpl 48 30 0 22 1 0 1 1 0 8 0 mppekey 1024 4 0 4 4 4 0 1 0 8 0 ppxss 1192 330 0 330 5 4 1 1 0 8 1 pppxif 1504 33 0 33 11 10 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 80 0 69 1 0 1 1 0 482 0 pffrnode 88 74 0 63 1 0 1 1 0 8 0 pffrent 40 176 0 160 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 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 448 1 0 0 1 0 1 1 0 8 0 pfrule 1360 7 0 6 1 0 1 1 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 2055 0 1727 51 26 25 35 0 8 1 art_table 40 2060 0 1727 6 0 6 6 0 8 0 art_node 32 612 0 539 2 1 1 2 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semupl 112 7 0 7 5 5 0 1 0 8 0 semapl 112 481 0 471 1 0 1 1 0 8 0 shmpl 112 27 0 4 1 0 1 1 0 8 0 dirhash 1024 97 0 80 3 0 3 3 0 8 0 dino2pl 256 13113 0 11565 99 1 98 98 0 8 0 ffsino 296 13113 0 11565 121 1 120 120 0 8 0 nchpl 144 21199 0 19446 67 1 66 66 0 8 0 rtmask 32 61 0 61 8 7 1 1 0 8 1 vnodes 216 4859 0 0 270 0 270 270 0 8 0 namei 1024 77409 0 77408 9 8 1 2 0 8 0 percpumem 16 483 0 432 1 0 1 1 0 8 0 vcpupl 3968 23 0 5 3 0 3 3 0 8 0 vmpool 848 29 0 11 3 0 3 3 0 8 0 kstatmem 264 572 0 540 6 3 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 18 0 18 6 6 0 1 0 8 0 scxspl 216 175312 0 175309 19 16 3 8 1 8 2 plimitpl 152 1860 0 1844 1 0 1 1 0 8 0 sigapl 424 6431 0 6367 9 1 8 8 0 8 0 knotepl 120 684 0 0 18 0 18 18 0 8 0 kqueuepl 224 2528 0 2518 23 20 3 9 0 8 2 pipepl 344 1205 0 1176 28 19 9 9 0 8 6 fdescpl 528 6376 0 6348 3 0 3 3 0 8 0 filepl 160 46153 0 45943 53 38 15 20 0 8 2 lockfpl 104 3174 0 3173 4 3 1 2 0 8 0 lockfspl 48 915 0 914 1 0 1 1 0 8 0 sessionpl 144 85 0 77 1 0 1 1 0 8 0 pgrppl 48 236 0 220 1 0 1 1 0 8 0 ucredpl 104 7610 0 7598 1 0 1 1 0 8 0 zombiepl 144 6507 0 6505 1 0 1 1 0 8 0 processpl 1232 6431 0 6367 7 1 6 6 0 8 0 procpl 664 16554 0 16481 8 0 8 8 0 8 0 sosppl 176 56 0 56 6 5 1 1 0 8 1 sockpl 752 13257 0 13235 121 111 10 27 0 8 7 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 67 0 0 9 6 3 9 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 100 0 0 10 2 8 10 0 8 0 mtagpl 96 10 0 0 1 0 1 1 0 8 0 mbufpl 256 4305 0 0 264 0 264 264 0 8 0 bufpl 280 72106 0 65970 439 0 439 439 0 8 0 anonpl 32 16307 0 0 131 0 131 131 0 246 0 amapchunkpl 152 198275 0 197667 102 59 43 43 0 158 13 amappl16 200 23834 0 23751 159 134 25 34 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 691 0 690 1 0 1 1 0 8 0 amappl12 168 6987 0 6951 3 0 3 3 0 8 0 amappl11 160 17 0 17 1 1 0 1 0 8 0 amappl10 152 67 0 58 1 0 1 1 0 8 0 amappl9 144 278 0 277 2 1 1 1 0 8 0 amappl8 136 37 0 34 1 0 1 1 0 8 0 amappl7 128 173 0 170 1 0 1 1 0 8 0 amappl6 120 609 0 597 1 0 1 1 0 8 0 amappl5 112 215 0 207 1 0 1 1 0 8 0 amappl4 104 751 0 724 1 0 1 1 0 8 0 amappl3 96 35590 0 35499 4 1 3 3 0 8 0 amappl2 88 6727 0 6665 2 0 2 2 0 8 0 amappl1 80 45216 0 44725 16 2 14 15 0 8 0 amappl 88 53495 0 53321 5 0 5 5 0 92 0 uvmvnodes 80 270 0 0 6 0 6 6 0 8 0 dma8192 8192 2 0 2 2 2 0 1 0 8 0 dma4096 4096 3 0 3 3 3 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma512 512 2 0 2 2 1 1 1 0 8 1 dma256 256 9 0 9 4 4 0 1 0 8 0 dma128 128 259 0 259 6 6 0 1 0 8 0 dma64 64 12 0 12 5 4 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 22 0 21 1 0 1 1 0 8 0 aobjpl 72 59 0 16 1 0 1 1 0 8 0 uaddrrnd 24 6376 0 6348 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6376 0 6348 1 0 1 1 0 8 0 vmmpekpl 168 48756 0 48697 4 0 4 4 0 8 0 vmmpepl 168 416719 0 414960 175 75 100 114 0 357 3 vmsppl 488 6375 0 6348 5 0 5 5 0 8 0 rwobjpl 80 110260 0 109084 43 7 36 38 0 8 0 pdppl 4096 12818 0 12736 181 95 86 94 0 8 4 pvpl 32 28087 0 0 227 2 225 225 0 265 0 pmappl 256 6404 0 6359 4 0 4 4 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 724 0 203 16 0 16 16 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837d2ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff839b2e80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839b2e80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839b2e80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839b2e80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a2e0260,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x73347722fd10, count: 4 ddb{0}> trace x86_ipi_db(ffffffff837d2ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff839b2e80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839b2e80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff839b2e80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839b2e80) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a2e0260,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x73347722fd10, count: -11 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: 0x76e5fd650ad0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x76e5fd650ad0, count: -1