uvm_fault(0xfffffd806b97cd70, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 TID PID UID PRFLAGS PFLAGS CPU COMMAND 77397 91988 0 0 0 0 syz-executor dt_ioctl_record_stop(ffff800001673000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c483b40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b615e70,81,fffffd80097fb3a8,ffff80002a2d4f80) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d0375c0,ffff80002a2d4f80) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806d0375c0,ffff80002a2d4f80) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2d4f80) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2d4f80,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d4f80,ffff80003c483eb0,ffff80003c483e00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c483eb0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c483eb0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70730c6d8520, 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(0xfffffd806b97cd70, 0x0, 0, 1) -> e ddb{1}> trace dt_ioctl_record_stop(ffff800001673000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c483b40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b615e70,81,fffffd80097fb3a8,ffff80002a2d4f80) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d0375c0,ffff80002a2d4f80) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806d0375c0,ffff80002a2d4f80) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2d4f80) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2d4f80,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d4f80,ffff80003c483eb0,ffff80003c483e00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c483eb0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c483eb0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70730c6d8520, count: -12 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c483a70 rbx 0xffffffff82290ee0 dtclose rdx 0 rcx 0xffff80002a2d4f80 rax 0xffffffff83868b98 dt_prov_syscall r8 0x7f7fffffc000 r9 0x1 r10 0x53ce08a1546b0d6f r11 0x7afecc022c319728 r12 0xffff80000006d600 r13 0 r14 0 r15 0xffff8000014a4c00 rip 0xffffffff822912c0 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c483a40 ss 0x10 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{1}> show proc PROC (syz-executor) tid=334034 pid=14114 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2d4f80 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2d59c0,0xffff80002a2d5c60 process=0xffff80002a2b0eb8 user=0xffff80003c47e000, vmspace=0xfffffd806b97cd70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58400 211022 77717 0 2 0 syz-executor 58400 74143 77717 0 3 0x4000080 fsleep syz-executor 91988 77397 3372 0 7 0 syz-executor 91988 54516 3372 0 3 0x4000080 fsleep syz-executor 91988 39105 3372 0 3 0x4000080 lockf syz-executor 105 512960 68829 0 2 0 syz-executor 105 388968 68829 0 3 0x4000080 kqread syz-executor 61714 297181 24290 0 2 0 syz-executor 61714 177613 24290 0 3 0x4000000 biowait syz-executor 61714 124517 24290 0 3 0x4000000 inode syz-executor 61714 394769 24290 0 2 0x4000000 syz-executor 27996 99134 81501 0 3 0x80 nanoslp syz-executor 27996 216189 81501 0 3 0x4000080 fsleep syz-executor 27996 199903 81501 0 3 0x4000080 vgalk syz-executor 27996 275807 81501 0 3 0x4000080 vgalk syz-executor 27996 29835 81501 0 3 0x4000080 fsleep syz-executor 13134 222752 49482 0 3 0x80 nanoslp syz-executor 13134 154753 49482 0 3 0x4000080 kqsel syz-executor 13134 33994 49482 0 3 0x4000080 fsleep syz-executor 13134 372935 49482 0 3 0x4000080 kqsel syz-executor 58227 61473 31564 0 2 0 syz-executor 58227 438123 31564 0 3 0x4000080 kqsel syz-executor 58227 62454 31564 0 3 0x4000080 fsleep syz-executor 58227 485321 31564 0 3 0x4000080 fsleep syz-executor 81501 22367 6605 0 3 0x82 nanoslp syz-executor 73617 265440 1 0 3 0x100083 ttyin getty 68829 173380 6605 0 3 0x82 nanoslp syz-executor 24290 433594 6605 0 3 0x82 nanoslp syz-executor 96869 388964 87093 0 3 0x82 sbwait sshd-session 31564 444019 6605 0 3 0x82 nanoslp syz-executor 49482 396018 6605 0 3 0x82 nanoslp syz-executor 3372 10104 6605 0 3 0x82 nanoslp syz-executor 77717 158802 6605 0 3 0x82 nanoslp syz-executor 23596 62370 0 0 3 0x14200 bored sosplice 14707 414417 6605 0 3 0x82 nanoslp syz-executor 6605 100411 65966 0 3 0x82 kqread syz-executor 65966 165816 34513 0 3 0x10008a sigsusp ksh 34513 256607 77458 0 3 0x98 kqread sshd-session 77458 85442 87093 0 3 0x92 kqread sshd-session 87093 16246 1 0 3 0x88 kqread sshd 49086 253626 48080 74 3 0x1100092 bpf pflogd 48080 265831 1 0 3 0x80 sbwait pflogd 43798 458189 31190 73 3 0x1100090 kqread syslogd 31190 193851 1 0 3 0x100082 sbwait syslogd 28168 120803 1 0 3 0x100080 kqread resolvd 77855 31666 33683 77 3 0x100092 kqread dhcpleased 24839 345304 33683 77 3 0x100092 kqread dhcpleased 33683 326547 1 0 3 0x80 kqread dhcpleased 13337 142535 0 0 3 0x14200 bored smr 47849 20796 0 0 2 0x14200 zerothread 68957 14691 0 0 3 0x14200 aiodoned aiodoned 4837 232050 0 0 3 0x14200 syncer update 67220 246285 0 0 3 0x14200 cleaner cleaner 54128 385219 0 0 3 0x14200 reaper reaper 99453 45840 0 0 3 0x14200 pgdaemon pagedaemon 46327 271737 0 0 3 0x14200 bored viomb 99123 308845 0 0 3 0x40014200 acpi0 acpi0 22468 213540 0 0 3 0x40014200 idle1 66638 311377 0 0 3 0x14200 bored softnet7 29888 150068 0 0 3 0x14200 bored softnet6 10219 432599 0 0 3 0x14200 bored softnet5 5717 151724 0 0 3 0x14200 bored softnet4 35005 144497 0 0 3 0x14200 bored softnet3 34555 371137 0 0 3 0x14200 bored softnet2 23581 56228 0 0 3 0x14200 bored softnet1 14211 354810 0 0 3 0x14200 bored softnet0 39051 343443 0 0 3 0x14200 bored systqmp 97754 143607 0 0 3 0x14200 bored systq 56577 339565 0 0 3 0x14200 tmoslp softclockmp 32607 188125 0 0 3 0x40014200 tmoslp softclock 67894 463362 0 0 3 0x40014200 idle0 1 434479 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 61714 (syz-executor) thread 0xffff80002a38cf98 (177613) exclusive rrwlock inode r = 0 (0xfffffd806e065238) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 Process 61714 (syz-executor) thread 0xffff80002a38d748 (124517) exclusive rrwlock inode r = 0 (0xfffffd8067341ec0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 uipc_bind+0x2f4 sys/kern/uipc_usrreq.c:371 #8 sys_bind+0x28a sys/kern/uipc_syscalls.c:189 #9 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10250 11079K 12520K 166960K 19959 0 pcb 19 17K 20K 166960K 1235 0 rtable 231 13K 13K 166960K 1074 0 pf 39 18K 67486K 166960K 494 0 ifaddr 40 8K 9K 166960K 282 0 ifgroup 59 2K 3K 166960K 500 0 sysctl 4 1K 9K 166960K 37 0 counters 70 37K 38K 166960K 558 0 ioctlops 0 0K 4K 166960K 2503 0 iov 0 0K 32K 166960K 350 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1551 98K 98K 166960K 6423 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 14K 22K 166960K 60 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 247 0 dirhash 12 2K 3K 166960K 96 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4753 0 sigio 0 0K 0K 166960K 77 0 proc 72 115K 163K 166960K 1561 0 subproc 72 4K 4K 166960K 207 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 843 0 in_multi 84 6K 7K 166960K 417 0 ether_multi 1 0K 0K 166960K 23 0 mrt 1 0K 0K 166960K 30 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1592 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 282 170K 183K 166960K 43259 0 UVM aobj 177 6K 8K 166960K 188 0 pinsyscall 45 90K 102K 166960K 6218 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 293 0 NDP 13 0K 2K 166960K 206 0 temp 88 8684K 8940K 166960K 196773 0 kqueue 15 24K 35K 166960K 929 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 120 408 0 405 3 0 3 3 0 8 2 rtentry 176 375 0 289 5 0 5 5 0 8 0 unpcb 144 3439 0 3418 33 30 3 6 0 8 2 syncache 336 17 0 17 7 6 1 1 0 8 1 tcpqe 32 6 0 6 5 4 1 1 0 8 1 tcpcb 736 1753 0 1743 39 35 4 7 0 8 2 arp 128 52 0 38 1 0 1 1 0 8 0 ipq 40 9 0 8 3 2 1 1 0 8 0 ipqe 40 11 0 10 3 2 1 1 0 8 0 inpcb 328 5315 0 5294 56 49 7 12 0 8 4 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 144 65 0 49 1 0 1 1 0 8 0 pkpcb 40 41 0 41 12 11 1 1 0 8 1 kcovpl 48 23 0 15 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 188 0 188 4 3 1 1 0 8 1 pppxif 1504 56 0 56 9 8 1 1 0 8 1 pffrag 232 42 0 42 1 1 0 1 0 482 0 pffrnode 88 42 0 42 1 1 0 1 0 8 0 pffrent 40 79 0 79 1 1 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 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pfstitem 24 66 0 62 1 0 1 1 0 8 0 pfstkey 128 68 0 64 2 1 1 2 0 8 0 pfstate 384 66 0 63 5 3 2 5 0 8 0 pfrule 1344 24 0 19 2 1 1 2 0 8 0 rttmr 136 9 0 9 6 6 0 1 0 8 0 art_heap8 4096 4 0 1 4 1 3 4 0 8 0 art_heap4 256 1594 0 1227 41 17 24 30 0 8 0 art_table 40 1598 0 1228 5 0 5 5 0 8 0 art_node 32 374 0 307 1 0 1 1 0 8 0 semapl 112 236 0 226 1 0 1 1 0 8 0 shmpl 112 185 0 11 5 0 5 5 0 8 0 dirhash 1024 74 0 57 3 0 3 3 0 8 0 dino2pl 256 10023 0 8496 96 0 96 96 0 8 0 ffsino 296 10023 0 8496 118 0 118 118 0 8 0 nchpl 144 16544 0 14821 65 0 65 65 0 8 0 rtmask 32 25 0 25 11 11 0 1 0 8 0 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 62718 0 62717 6 5 1 2 0 8 0 percpumem 16 294 0 244 1 0 1 1 0 8 0 kstatmem 264 320 0 290 8 5 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 21 0 21 8 8 0 1 0 8 0 scxspl 216 95529 0 95528 18 17 1 8 1 8 0 plimitpl 152 1007 0 988 1 0 1 1 0 8 0 sigapl 424 4992 0 4936 9 2 7 9 0 8 0 knotepl 120 942 0 0 24 0 24 24 0 8 0 kqueuepl 224 2162 0 2147 23 21 2 5 0 8 1 pipepl 344 821 0 793 27 24 3 9 0 8 0 fdescpl 528 4940 0 4907 3 0 3 3 0 8 0 filepl 160 37622 0 37390 51 37 14 20 0 8 0 lockfpl 104 3201 0 3197 7 5 2 2 0 8 1 lockfspl 48 1293 0 1290 1 0 1 1 0 8 0 sessionpl 144 54 0 44 1 0 1 1 0 8 0 pgrppl 48 236 0 218 1 0 1 1 0 8 0 ucredpl 104 6478 0 6465 1 0 1 1 0 8 0 zombiepl 144 6014 0 6013 1 0 1 1 0 8 0 processpl 1248 4992 0 4936 6 1 5 6 0 8 0 procpl 656 12362 0 12289 8 1 7 8 0 8 0 sosppl 168 26 0 26 11 11 0 1 0 8 0 sockpl 752 9377 0 9332 98 87 11 17 0 8 5 mcl64k 65536 7 0 0 1 0 1 1 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 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 35 0 0 4 0 4 4 0 8 0 mtagpl 96 87 0 0 2 0 2 2 0 8 0 mbufpl 256 1406 0 0 77 0 77 77 0 8 0 bufpl 280 35428 0 29286 441 1 440 440 0 8 0 anonpl 32 15218 0 0 123 0 123 123 0 246 0 amapchunkpl 152 150096 0 149439 71 42 29 33 0 158 2 amappl16 200 15083 0 15021 94 79 15 28 0 8 4 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 181 0 168 1 0 1 1 0 8 0 amappl13 176 70 0 70 3 3 0 1 0 8 0 amappl12 168 5914 0 5880 4 2 2 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 280 0 280 1 1 0 1 0 8 0 amappl8 136 39 0 35 1 0 1 1 0 8 0 amappl7 128 166 0 152 1 0 1 1 0 8 0 amappl6 120 338 0 333 1 0 1 1 0 8 0 amappl5 112 220 0 209 1 0 1 1 0 8 0 amappl4 104 366 0 345 1 0 1 1 0 8 0 amappl3 96 31417 0 31284 5 1 4 4 0 8 0 amappl2 88 1009 0 940 2 0 2 2 0 8 0 amappl1 80 30146 0 29464 19 3 16 16 0 8 1 amappl 88 41442 0 41238 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 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 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 dma128 128 259 0 259 5 5 0 1 0 8 0 dma64 64 13 0 13 7 7 0 1 0 8 0 dma32 32 10 0 10 3 3 0 1 0 8 0 dma16 16 23 0 22 1 0 1 1 0 8 0 aobjpl 72 187 0 11 4 0 4 4 0 8 0 uaddrrnd 24 4940 0 4907 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4940 0 4907 1 0 1 1 0 8 0 vmmpekpl 168 37090 0 37033 5 2 3 3 0 8 0 vmmpepl 168 310833 0 308568 142 29 113 113 0 357 7 vmsppl 488 4939 0 4907 6 1 5 5 0 8 0 rwobjpl 80 82171 0 74947 160 6 154 154 0 8 1 pdppl 4096 9888 0 9814 141 65 76 86 0 8 2 pvpl 32 26890 0 0 217 1 216 216 0 265 0 pmappl 256 4939 0 4907 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 447 0 135 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837feff0) 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(ffffffff83927370) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83927370) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80002a3c53f0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7dbe67d07ad0, count: 8 ddb{0}> trace x86_ipi_db(ffffffff837feff0) 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(ffffffff83927370) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83927370) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80002a3c53f0,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7dbe67d07ad0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 dt_ioctl_record_stop(ffff800001673000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c483b40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b615e70,81,fffffd80097fb3a8,ffff80002a2d4f80) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d0375c0,ffff80002a2d4f80) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806d0375c0,ffff80002a2d4f80) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2d4f80) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2d4f80,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d4f80,ffff80003c483eb0,ffff80003c483e00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c483eb0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c483eb0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70730c6d8520, count: 3 ddb{1}> trace dt_ioctl_record_stop(ffff800001673000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2d4f80) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c483b40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b615e70,81,fffffd80097fb3a8,ffff80002a2d4f80) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d0375c0,ffff80002a2d4f80) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806d0375c0,ffff80002a2d4f80) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806d0375c0,ffff80002a2d4f80) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2d4f80) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2d4f80,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2d4f80,ffff80003c483eb0,ffff80003c483e00) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c483eb0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c483eb0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70730c6d8520, count: -12