uvm_fault(0xfffffd806b9e05d0, 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 223770 79991 0 0 0x4000000 0 syz-executor dt_ioctl_record_stop(ffff800001586000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4a6e10) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80657351c0,81,fffffd80097fb478,ffff800037c0dcb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7daae0,ffff800037c0dcb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7daae0,ffff800037c0dcb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800037c0dcb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800037c0dcb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800037c0dcb8,ffff80003c4a7180,ffff80003c4a70d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4a7180) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a7180) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c755eff7270, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806b9e05d0, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001586000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4a6e10) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80657351c0,81,fffffd80097fb478,ffff800037c0dcb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7daae0,ffff800037c0dcb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7daae0,ffff800037c0dcb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800037c0dcb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800037c0dcb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800037c0dcb8,ffff80003c4a7180,ffff80003c4a70d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4a7180) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a7180) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c755eff7270, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4a6d40 rbx 0x1 rdx 0 rcx 0xffff800037c0dcb8 rax 0xffffffff837e9db8 dt_prov_syscall r8 0 r9 0 r10 0xa246318b135e5873 r11 0xb7533c2119215ecb r12 0 r13 0 r14 0 r15 0xffff8000014ac400 rip 0xffffffff81c007b8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c4a6d10 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{1}> show proc PROC (syz-executor) tid=371060 pid=41443 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=78, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800037c0dcb8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800037c0a7f0,0xffff800037c08560 process=0xffff80003a0244f0 user=0xffff80003c4a2000, vmspace=0xfffffd806b9e05d0 estcpu=28, cpticks=1, pctcpu=0.1, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66814 450751 57921 0 2 0 syz-executor 66814 104119 57921 0 3 0x4000080 fsleep syz-executor 66814 215526 57921 0 3 0x4000000 vmmaplk syz-executor 66814 523156 57921 0 2 0x4000000 syz-executor 79991 172329 4386 0 2 0 syz-executor 79991 223770 4386 0 7 0x4000000 syz-executor 5070 364678 6701 0 2 0x1 syz-executor 5070 12309 6701 0 3 0x4000080 fsleep syz-executor 5070 154137 6701 0 2 0x4000001 syz-executor 24059 297249 12879 0 3 0x80 nanoslp syz-executor 24059 171905 12879 0 3 0x4000080 kqpoll syz-executor 24059 126559 12879 0 3 0x4000080 fsleep syz-executor 24059 464893 12879 0 3 0x4000080 fsleep syz-executor 86542 322049 35586 0 3 0x80 nanoslp syz-executor 86542 37479 35586 0 3 0x4000080 msgwait syz-executor 86542 508598 35586 0 3 0x4000080 fsleep syz-executor 86542 252592 35586 0 3 0x4000080 fsleep syz-executor 799 314265 0 0 3 0x14200 bored sosplice 33479 448143 1 0 3 0x100083 ttyin getty 4386 132546 25154 0 3 0x82 nanoslp syz-executor 97980 313682 25154 0 2 0x2 syz-executor 57921 296084 25154 0 3 0x82 nanoslp syz-executor 34073 511867 25154 0 3 0x82 nanoslp syz-executor 12879 426962 25154 0 3 0x82 nanoslp syz-executor 35586 268094 25154 0 3 0x82 nanoslp syz-executor 6701 497776 25154 0 3 0x82 nanoslp syz-executor 1366 182220 25154 0 3 0x82 wait syz-executor 25154 284143 96838 0 3 0x82 kqread syz-executor 96838 96257 97443 0 3 0x10008a sigsusp ksh 97443 274960 23181 0 3 0x98 kqread sshd-session 23181 144108 57815 0 3 0x92 kqread sshd-session 57815 73126 1 0 3 0x88 kqread sshd 21508 121538 26719 74 3 0x1100092 bpf pflogd 26719 126567 1 0 3 0x80 sbwait pflogd 66127 63312 61753 73 3 0x1100090 kqread syslogd 61753 163608 1 0 3 0x100082 sbwait syslogd 35677 396290 1 0 3 0x100080 kqread resolvd 79450 332059 55339 77 3 0x100092 kqread dhcpleased 34550 147665 55339 77 3 0x100092 kqread dhcpleased 55339 206647 1 0 3 0x80 kqread dhcpleased 67267 249527 0 0 3 0x14200 bored smr 21495 202404 0 0 2 0x14200 zerothread 36592 439683 0 0 3 0x14200 aiodoned aiodoned 16611 135939 0 0 3 0x14200 syncer update 54724 60822 0 0 3 0x14200 cleaner cleaner 9451 411979 0 0 3 0x14200 reaper reaper 72394 441172 0 0 3 0x14200 pgdaemon pagedaemon 83460 217914 0 0 3 0x14200 bored viomb 34198 33852 0 0 3 0x40014200 acpi0 acpi0 85397 490393 0 0 3 0x40014200 idle1 22084 84626 0 0 3 0x14200 bored softnet7 61016 185077 0 0 3 0x14200 bored softnet6 53750 509935 0 0 3 0x14200 bored softnet5 25077 15794 0 0 3 0x14200 bored softnet4 70964 133127 0 0 3 0x14200 bored softnet3 14193 202750 0 0 3 0x14200 bored softnet2 17387 301736 0 0 3 0x14200 bored softnet1 8252 20036 0 0 2 0x14200 softnet0 34930 424225 0 0 3 0x14200 bored systqmp 62314 331123 0 0 3 0x14200 bored systq 84510 207969 0 0 3 0x14200 tmoslp softclockmp 2099 169451 0 0 3 0x40014200 tmoslp softclock 98321 203928 0 0 3 0x40014200 idle0 1 509917 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 79991 (syz-executor) thread 0xffff800037c082b8 (223770) exclusive rwlock vmmaplk r = 0 (0xfffffd806ef5a6c0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #8 recall_trap+0x8 Process 97980 (syz-executor) thread 0xffff8000ffff3238 (313682) exclusive rwlock vmmaplk r = 0 (0xfffffd806ef5a108) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3729 #4 process_new+0x577 sys/kern/kern_fork.c:281 #5 fork1+0x3f6 sys/kern/kern_fork.c:-1 #6 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10224 11087K 11766K 166960K 11771 0 pcb 17 12K 12K 166960K 42 0 rtable 209 7K 10K 166960K 297 0 pf 35 17K 21K 166960K 76 0 ifaddr 42 7K 7K 166960K 56 0 ifgroup 55 2K 2K 166960K 83 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 37K 166960K 90 0 ioctlops 0 0K 4K 166960K 1579 0 iov 0 0K 16K 166960K 15 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1437 90K 90K 166960K 1587 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 318 0 sigio 0 0K 0K 166960K 4 0 proc 73 115K 164K 166960K 559 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 33 0 in_multi 98 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 3 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 386 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 253 167K 175K 166960K 4578 0 UVM aobj 6 2K 4K 166960K 7 0 pinsyscall 43 86K 100K 166960K 1410 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 15 0 NDP 12 0K 2K 166960K 36 0 temp 44 8640K 8767K 166960K 13165 0 kqueue 13 20K 28K 166960K 69 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 49 0 46 1 0 1 1 0 8 0 rtentry 176 98 0 7 5 0 5 5 0 8 0 unpcb 144 169 0 152 3 1 2 2 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 61 0 57 1 0 1 1 0 8 0 arp 128 10 0 0 1 0 1 1 0 8 0 inpcb 328 196 0 188 3 1 2 2 0 8 1 nd6 144 17 0 1 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 6 0 6 1 1 0 1 0 8 0 pppxif 1504 1 0 1 1 1 0 1 0 8 0 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 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 6 0 6 1 0 1 1 0 8 1 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pfstitem 24 32 0 0 1 0 1 1 0 8 0 pfstkey 128 32 0 0 2 0 2 2 0 8 0 pfstate 384 32 0 0 4 0 4 4 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 445 0 14 28 0 28 28 0 8 0 art_table 40 446 0 14 5 0 5 5 0 8 0 art_node 32 97 0 16 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 112 7 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1918 0 402 95 0 95 95 0 8 0 ffsino 296 1918 0 402 117 0 117 117 0 8 0 nchpl 144 2370 0 678 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 2156 0 0 44 0 44 44 0 8 0 vnodes 216 2156 0 0 120 0 120 120 0 8 0 namei 1024 7744 0 7743 3 2 1 2 0 8 0 percpumem 16 60 0 11 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 kstatmem 264 42 0 16 3 0 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 10216 0 10216 3 2 1 2 1 8 1 plimitpl 152 74 0 56 1 0 1 1 0 8 0 sigapl 424 625 0 570 7 0 7 7 0 8 0 knotepl 120 292 0 0 9 0 9 9 0 8 0 kqueuepl 224 133 0 123 3 0 3 3 0 8 2 pipepl 344 155 0 127 6 0 6 6 0 8 3 fdescpl 528 602 0 570 3 0 3 3 0 8 0 filepl 160 2949 0 2725 16 2 14 14 0 8 4 lockfpl 104 84 0 81 1 0 1 1 0 8 0 lockfspl 48 35 0 32 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 303 0 289 1 0 1 1 0 8 0 zombiepl 144 665 0 663 2 1 1 1 0 8 0 processpl 1232 625 0 570 5 0 5 5 0 8 0 procpl 664 986 0 919 7 0 7 7 0 8 0 sockpl 752 422 0 393 7 0 7 7 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 144 0 0 9 0 9 9 0 8 0 bufpl 280 4368 0 123 304 0 304 304 0 8 0 anonpl 32 7612 0 0 63 1 62 63 0 246 0 amapchunkpl 152 13585 0 13037 34 8 26 26 0 158 3 amappl16 200 781 0 752 15 0 15 15 0 8 9 amappl15 192 40 0 40 1 1 0 1 0 8 0 amappl14 184 112 0 100 1 0 1 1 0 8 0 amappl13 176 1 0 1 1 1 0 1 0 8 0 amappl12 168 1244 0 1213 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 2 0 1 1 0 1 1 0 8 0 amappl9 144 319 0 318 1 0 1 1 0 8 0 amappl8 136 17 0 15 1 0 1 1 0 8 0 amappl7 128 105 0 93 1 0 1 1 0 8 0 amappl6 120 213 0 210 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 294 0 273 1 0 1 1 0 8 0 amappl3 96 2572 0 2446 6 2 4 4 0 8 0 amappl2 88 666 0 604 2 0 2 2 0 8 0 amappl1 80 8982 0 8391 14 1 13 14 0 8 0 amappl 88 3874 0 3694 6 1 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 128 254 0 254 2 1 1 1 0 8 1 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 603 0 571 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 603 0 571 1 0 1 1 0 8 0 vmmpekpl 168 6640 0 6604 3 0 3 3 0 8 0 vmmpepl 168 43134 0 41142 100 0 100 100 0 357 7 vmsppl 488 602 0 571 5 1 4 5 0 8 0 rwobjpl 80 15375 0 12262 68 0 68 68 0 8 0 pdppl 4096 1214 0 1142 102 30 72 84 0 8 0 pvpl 32 15075 0 0 122 0 122 122 0 265 0 pmappl 256 602 0 571 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 271 0 35 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e3ff0) 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(ffffffff838d9b80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d9b80) 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 __mp_lock(ffffffff838d9b80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d9b80) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838d9b80,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 pool_get(ffffffff838818e0,1) at pool_get+0x27e sys/kern/subr_pool.c:591 namei(ffff80003c4a1928) at namei+0xdf sys/kern/vfs_lookup.c:145 domknodat(ffff800037c082b8,ffffff9c,200000000040,6000,e04) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1592 syscall(ffff80003c4a1b20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a1b20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff80003c4a1ba0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837e3ff0) 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(ffffffff838d9b80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d9b80) 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 __mp_lock(ffffffff838d9b80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838d9b80) at __mp_lock+0x192 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff838d9b80,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 pool_get(ffffffff838818e0,1) at pool_get+0x27e sys/kern/subr_pool.c:591 namei(ffff80003c4a1928) at namei+0xdf sys/kern/vfs_lookup.c:145 domknodat(ffff800037c082b8,ffffff9c,200000000040,6000,e04) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1592 syscall(ffff80003c4a1b20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a1b20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75f33d4cb70, count: -15 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 dt_ioctl_record_stop(ffff800001586000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4a6e10) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80657351c0,81,fffffd80097fb478,ffff800037c0dcb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7daae0,ffff800037c0dcb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7daae0,ffff800037c0dcb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800037c0dcb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800037c0dcb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800037c0dcb8,ffff80003c4a7180,ffff80003c4a70d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4a7180) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a7180) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c755eff7270, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001586000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800037c0dcb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c4a6e10) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80657351c0,81,fffffd80097fb478,ffff800037c0dcb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b7daae0,ffff800037c0dcb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b7daae0,ffff800037c0dcb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b7daae0,ffff800037c0dcb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800037c0dcb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800037c0dcb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800037c0dcb8,ffff80003c4a7180,ffff80003c4a70d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4a7180) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4a7180) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c755eff7270, count: -12