uvm_fault(0xfffffd800b0fb010, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 461034 61124 0 0x2 0x1 1 syz-executor dt_ioctl_record_stop(ffff800001474000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800038c21a20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f731c00,81,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a0712e8,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a0712e8,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a0712e8,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a0712e8,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff800038c21d90,ffff800038c21ce0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038c21d90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c21d90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74948d177760, count: 3 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(0xfffffd800b0fb010, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001474000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800038c21a20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f731c00,81,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a0712e8,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a0712e8,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a0712e8,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a0712e8,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff800038c21d90,ffff800038c21ce0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038c21d90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c21d90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74948d177760, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800038c21950 rbx 0x1 rdx 0 rcx 0xffff80002a2b9770 rax 0xffffffff8384a480 dt_prov_syscall r8 0 r9 0 r10 0x84dcd23d9b0b8f84 r11 0xeb5eede728a73c3c r12 0 r13 0 r14 0 r15 0xffff800001497a00 rip 0xffffffff82aa4568 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff800038c21920 ss 0 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=430349 pid=68309 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2b9770 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c459a18,0xffff80003c458d30 process=0xffff800038c279e0 user=0xffff800038c1c000, vmspace=0xfffffd800b0fb010 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 22220 35756 92541 0 2 0 syz-executor 22220 286915 92541 0 3 0x4000080 fsleep syz-executor 71688 105109 77352 -1 2 0x10 syz-executor 71688 227927 77352 -1 3 0x4000090 ttyretype syz-executor 49720 3895 61124 0 2 0 syz-executor 49720 127594 61124 0 3 0x4000080 ttyout syz-executor 49720 341315 61124 0 3 0x4000080 fsleep syz-executor 49720 390972 61124 0 3 0x4000080 fsleep syz-executor 49720 460016 61124 0 3 0x4000080 fsleep syz-executor 49720 235514 61124 0 3 0x4000080 fsleep syz-executor 39127 115849 85959 0 3 0x80 nanoslp syz-executor 39127 256657 85959 0 3 0x4000080 kqread syz-executor 39127 237359 85959 0 3 0x4000080 fsleep syz-executor 2466 446227 79298 0 3 0x3000 suspend syz-executor 2466 265187 79298 0 2 0x4081000 syz-executor 2466 182628 79298 0 3 0x4081000 inode syz-executor 2466 211359 79298 0 3 0x4081000 inode syz-executor 2167 260613 0 0 3 0x14200 acct acct 4240 171470 1 0 3 0x80 nanoslp init 87315 366531 0 0 3 0x14200 bored sosplice 33908 327672 82070 0 3 0x82 nanoslp syz-executor 37482 405835 82070 0 3 0x82 nanoslp syz-executor 79298 260894 82070 0 3 0x82 nanoslp syz-executor 35391 118518 82070 0 2 0x2 syz-executor 61124 461034 82070 0 7 0x3 syz-executor 85959 133552 82070 0 3 0x82 nanoslp syz-executor 77352 479249 82070 0 3 0x82 nanoslp syz-executor 92541 211802 82070 0 3 0x82 nanoslp syz-executor 82070 46255 31142 0 3 0x82 kqread syz-executor 31142 76557 41619 0 3 0x10008a sigsusp ksh 41619 131067 25619 0 3 0x98 kqread sshd-session 25619 241808 30993 0 3 0x92 kqread sshd-session 30993 519063 1 0 3 0x88 kqread sshd 14643 144516 61794 74 3 0x1100092 bpf pflogd 61794 104565 1 0 3 0x80 sbwait pflogd 93936 21408 696 73 3 0x1100090 kqread syslogd 696 353263 1 0 3 0x100082 sbwait syslogd 855 59261 1 0 3 0x100080 kqread resolvd 4846 301284 64836 77 3 0x100092 kqread dhcpleased 95271 166458 64836 77 3 0x100092 kqread dhcpleased 64836 490454 1 0 3 0x80 kqread dhcpleased 46940 40879 0 0 3 0x14200 bored smr 63064 259950 0 0 3 0x14200 pgzero zerothread 92951 262295 0 0 3 0x14200 aiodoned aiodoned 11025 409457 0 0 3 0x14200 syncer update 95703 209153 0 0 3 0x14200 cleaner cleaner 20202 458180 0 0 2 0x14200 reaper 26830 36574 0 0 3 0x14200 pgdaemon pagedaemon 72386 377486 0 0 3 0x14200 bored viomb 67552 141848 0 0 3 0x40014200 acpi0 acpi0 95477 65817 0 0 3 0x40014200 idle1 13175 321291 0 0 3 0x14200 bored softnet7 57511 273528 0 0 3 0x14200 bored softnet6 82264 426652 0 0 3 0x14200 bored softnet5 96555 509342 0 0 3 0x14200 bored softnet4 956 345223 0 0 3 0x14200 bored softnet3 41014 127551 0 0 3 0x14200 bored softnet2 61102 11872 0 0 3 0x14200 bored softnet1 46415 490604 0 0 3 0x14200 bored softnet0 23525 163327 0 0 3 0x14200 bored systqmp 24420 517037 0 0 3 0x14200 bored systq 48010 349638 0 0 3 0x14200 tmoslp softclockmp 33188 53405 0 0 3 0x40014200 tmoslp softclock 73368 246442 0 0 3 0x40014200 idle0 1 76349 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 2466 (syz-executor) thread 0xffff800034409248 (265187) exclusive rrwlock inode r = 0 (0xfffffd806b65b460) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 2466 (syz-executor) thread 0xffff8000ffff2a70 (211359) exclusive rrwlock inode r = 0 (0xfffffd806b65bec8) #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+0xa3 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 domknodat+0xb4 sys/kern/vfs_syscalls.c:1592 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 11058K 11184K 166960K 11599 0 pcb 18 16K 18K 166960K 217 0 rtable 172 7K 7K 166960K 326 0 pf 32 17K 19K 166960K 80 0 ifaddr 36 6K 7K 166960K 59 0 ifgroup 47 2K 2K 166960K 82 0 sysctl 4 1K 9K 166960K 9 0 counters 64 36K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1681 0 iov 0 0K 16K 166960K 39 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1685 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 594 0 sigio 0 0K 0K 166960K 12 0 proc 63 99K 180K 166960K 588 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 60 0 in_multi 77 5K 7K 166960K 119 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 474 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 164K 186K 166960K 7168 0 UVM aobj 18 2K 2K 166960K 21 0 pinsyscall 42 84K 102K 166960K 1677 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 10 0K 1K 166960K 39 0 temp 51 8645K 8766K 166960K 22947 0 kqueue 14 22K 33K 166960K 107 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 137 0 134 3 0 3 3 0 8 2 rtentry 176 105 0 36 5 1 4 5 0 8 0 unpcb 144 335 0 318 1 0 1 1 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 186 0 181 7 3 4 4 0 8 3 arp 128 11 0 3 1 0 1 1 0 8 0 inpcb 328 662 0 652 10 0 10 10 0 8 8 nd6 144 18 0 5 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 10 0 10 1 0 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 0 1 0 1 1 0 8 0 pfosfp 40 1430 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfstitem 24 59 0 2 1 0 1 1 0 8 0 pfstkey 128 59 0 2 2 0 2 2 0 8 0 pfstate 384 58 0 2 6 0 6 6 0 8 0 pfrule 1344 25 0 20 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 488 0 135 28 2 26 28 0 8 1 art_table 40 490 0 135 5 0 5 5 0 8 0 art_node 32 104 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 12 0 5 1 0 1 1 0 8 0 shmpl 112 18 0 3 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 2474 0 966 96 0 96 96 0 8 0 ffsino 296 2474 0 966 118 0 118 118 0 8 0 nchpl 144 3308 0 1615 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2689 0 0 55 0 55 55 0 8 0 vnodes 216 2689 0 0 150 0 150 150 0 8 0 namei 1024 11162 0 11161 2 1 1 2 0 8 0 percpumem 16 62 0 15 1 0 1 1 0 8 0 kstatmem 264 46 0 24 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 18159 0 18159 10 7 3 8 1 8 3 plimitpl 152 196 0 178 1 0 1 1 0 8 0 sigapl 424 920 0 864 9 1 8 9 0 8 1 knotepl 120 335 0 0 10 0 10 10 0 8 0 kqueuepl 224 209 0 199 3 0 3 3 0 8 2 pipepl 344 149 0 121 3 0 3 3 0 8 0 fdescpl 528 876 0 844 3 0 3 3 0 8 0 filepl 160 4798 0 4566 16 0 16 16 0 8 5 lockfpl 104 172 0 170 1 0 1 1 0 8 0 lockfspl 48 77 0 75 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 37 0 21 1 0 1 1 0 8 0 ucredpl 104 675 0 659 1 0 1 1 0 8 0 zombiepl 144 868 0 864 1 0 1 1 0 8 0 processpl 1232 920 0 864 6 0 6 6 0 8 1 procpl 664 1756 0 1687 8 1 7 8 0 8 0 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 752 1150 0 1120 14 0 14 14 0 8 10 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 109 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 173 0 0 11 0 11 11 0 8 0 bufpl 280 7354 0 1211 439 0 439 439 0 8 0 anonpl 32 9477 0 0 77 0 77 77 0 246 0 amapchunkpl 152 23766 0 23184 39 4 35 35 0 158 12 amappl16 200 3459 0 3186 25 4 21 21 0 8 4 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 112 0 101 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 2 0 1 0 8 0 amappl12 168 1515 0 1484 3 1 2 2 0 8 0 amappl11 160 48 0 34 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 128 0 117 1 0 1 1 0 8 0 amappl6 120 177 0 174 1 0 1 1 0 8 0 amappl5 112 139 0 128 1 0 1 1 0 8 0 amappl4 104 299 0 280 1 0 1 1 0 8 0 amappl3 96 4455 0 4328 5 1 4 4 0 8 0 amappl2 88 648 0 582 2 0 2 2 0 8 0 amappl1 80 10048 0 9471 14 1 13 14 0 8 0 amappl 88 6404 0 6214 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 20 0 3 1 0 1 1 0 8 0 uaddrrnd 24 876 0 844 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 876 0 844 1 0 1 1 0 8 0 vmmpekpl 168 8571 0 8531 3 0 3 3 0 8 0 vmmpepl 168 61173 0 58911 107 3 104 104 0 357 2 vmsppl 488 875 0 844 5 1 4 5 0 8 0 rwobjpl 80 21494 0 17617 81 0 81 81 0 8 1 pdppl 4096 1760 0 1688 98 26 72 86 0 8 0 pvpl 32 17114 0 0 140 1 139 139 0 265 0 pmappl 256 875 0 844 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 274 0 35 7 0 7 7 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001474000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a2b9770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2b9770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800038c21a20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f731c00,81,fffffd80097fb618,ffff80002a2b9770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a0712e8,ffff80002a2b9770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806a0712e8,ffff80002a2b9770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806a0712e8,ffff80002a2b9770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806a0712e8,ffff80002a2b9770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2b9770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2b9770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2b9770,ffff800038c21d90,ffff800038c21ce0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038c21d90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c21d90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74948d177760, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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(ffffffff8399e0e8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8399e0e8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff8000ffff3a00,b,20,ffff80002a37d810) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff8000ffff3a00,b,20,ffff80002a37d810) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a37d810) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a37d810) at syscall+0x304 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a5a5768e050, count: 8 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffffffff8399e0e8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8399e0e8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff8000ffff3a00,b,20,ffff80002a37d810) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff8000ffff3a00,b,20,ffff80002a37d810) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a37d810) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a37d810) at syscall+0x304 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a5a5768e050, count: -7