panic() at panic+0x15c sys/kern/subr_prf.c:207 vput(fffffd802dde00b8) at vput+0x14b sys/kern/vfs_subr.c:750 vn_close(fffffd802dde00b8,2,fffffd803f7c6ba0,ffff800014940ee8) at vn_close+0xfb sys/kern/vfs_vnops.c:291 sys_acct(ffff800014940ee8,ffff800016be0718,ffff800016be0780) at sys_acct+0x15b sys/kern/kern_acct.c:134 syscall(ffff800016be07e0) at syscall+0x508 Xsyscall(6,0,fffffffffffffec0,0,1,26619cbc010) at Xsyscall+0x128 end of kernel end trace frame: 0x2688a3751c0, count: 8 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic vput: ref cnt ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 vput(fffffd802dde00b8) at vput+0x14b sys/kern/vfs_subr.c:750 vn_close(fffffd802dde00b8,2,fffffd803f7c6ba0,ffff800014940ee8) at vn_close+0xfb sys/kern/vfs_vnops.c:291 sys_acct(ffff800014940ee8,ffff800016be0718,ffff800016be0780) at sys_acct+0x15b sys/kern/kern_acct.c:134 syscall(ffff800016be07e0) at syscall+0x508 Xsyscall(6,0,fffffffffffffec0,0,1,26619cbc010) at Xsyscall+0x128 end of kernel end trace frame: 0x2688a3751c0, count: -7 ddb> show registers rdi 0xffffffff8125c6f7 db_enter+0x17 rsi 0x3f68 __ALIGN_SIZE+0x2f68 rbp 0xffff800016be0490 rbx 0xffff800016be0540 rdx 0x3f69 __ALIGN_SIZE+0x2f69 rcx 0xffff8000159cd000 rax 0xffff8000159cd000 r8 0xffff800016be0450 r9 0x1 r10 0xffff800000998100 r11 0xdf3e88af4c5bdc24 r12 0x3000000008 r13 0xffff800016be04a0 r14 0x100 r15 0x1 rip 0xffffffff8125c6f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800016be0480 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) pid=178773 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014940780,0xffffffff822ebb80 process=0xffff8000149430f8 user=0xffff800016bdb000, vmspace=0xfffffd803f00b110 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14834 332131 12105 0 2 0 syz-executor.1 *14834 178773 12105 0 7 0x4000000 syz-executor.1 48688 77655 76706 0 2 0 syz-executor.0 48688 229650 76706 0 2 0x4000000 syz-executor.0 12824 488673 0 0 3 0x14200 acct acct 62592 89509 1 0 3 0x100083 ttyin getty 12105 56056 26968 0 3 0x82 nanosleep syz-executor.1 76706 445195 26968 0 3 0x82 nanosleep syz-executor.0 37050 232648 0 0 3 0x14200 bored sosplice 26968 327621 19827 0 3 0x82 kqread syz-fuzzer 26968 139700 19827 0 3 0x4000082 thrsleep syz-fuzzer 26968 180681 19827 0 3 0x4000082 thrsleep syz-fuzzer 26968 218557 19827 0 3 0x4000082 thrsleep syz-fuzzer 26968 465635 19827 0 3 0x4000082 thrsleep syz-fuzzer 26968 515894 19827 0 3 0x4000082 thrsleep syz-fuzzer 26968 107150 19827 0 3 0x4000082 thrsleep syz-fuzzer 19827 158010 44221 0 3 0x10008a pause ksh 44221 467755 16241 0 3 0x92 select sshd 16241 42247 1 0 3 0x80 select sshd 25544 269535 80965 73 2 0x100090 syslogd 80965 334477 1 0 3 0x100082 netio syslogd 79217 495579 1 77 3 0x100090 poll dhclient 7960 506680 1 0 3 0x80 poll dhclient 80236 121787 0 0 2 0x14200 zerothread 12649 374955 0 0 3 0x14200 aiodoned aiodoned 51294 459377 0 0 3 0x14200 syncer update 33895 319420 0 0 3 0x14200 cleaner cleaner 36660 42213 0 0 3 0x14200 reaper reaper 73040 142295 0 0 3 0x14200 pgdaemon pagedaemon 66645 113765 0 0 3 0x14200 bored crynlk 4051 111794 0 0 3 0x14200 bored crypto 72831 292163 0 0 3 0x40014200 acpi0 acpi0 65852 175864 0 0 3 0x14200 bored softnet 22561 251009 0 0 3 0x14200 bored systqmp 71391 98439 0 0 3 0x14200 bored systq 4271 14460 0 0 3 0x40014200 bored softclock 69242 392996 0 0 3 0x40014200 idle0 58384 244965 0 0 3 0x14200 bored smr 1 197312 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9544 6361K 7054K 78643K 20725 0 0 pcb 13 8K 8K 78643K 304 0 0 rtable 120 12K 12K 78643K 1165 0 0 ifaddr 71 18K 20K 78643K 529 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 93 0 0 iov 0 0K 24K 78643K 374 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1212 76K 77K 78643K 6057 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 77 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 439 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 5500 0 0 sigio 1 0K 0K 78643K 42 0 0 proc 42 30K 55K 78643K 939 0 0 subproc 32 2K 2K 78643K 68 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 283 0 0 in_multi 33 2K 2K 78643K 259 0 0 ether_multi 1 0K 0K 78643K 34 0 0 mrt 0 0K 0K 78643K 33 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 90 397K 397K 78643K 90 0 0 exec 0 0K 1K 78643K 663 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 90 21K 30K 78643K 13120 0 0 UVM aobj 130 4K 4K 78643K 133 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 185 0 0 NDP 16 0K 0K 78643K 143 0 0 temp 198 2732K 2807K 78643K 19175 0 0 kqueue 0 0K 0K 78643K 11 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 12 0 5 1 0 1 1 0 8 0 rtpcb 80 197 0 195 1 0 1 1 0 8 0 rtentry 112 93 0 47 2 0 2 2 0 8 0 unpcb 120 1201 0 1193 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 75 0 75 8 8 0 1 0 8 0 tcpcb 544 562 0 558 1 0 1 1 0 8 0 ipq 40 7 0 7 2 2 0 1 0 8 0 ipqe 40 19 0 19 2 2 0 1 0 8 0 inpcb 280 1614 0 1605 5 4 1 2 0 8 0 nd6 48 12 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 104 0 104 12 12 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 285 0 93 12 0 12 12 0 8 0 art_table 32 286 0 93 2 0 2 2 0 8 0 art_node 16 69 0 28 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 0 1 0 1 1 0 8 0 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 437 0 427 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 10456 0 9043 47 1 46 47 0 8 0 ffsino 240 10456 0 9043 84 0 84 84 0 8 0 nchpl 144 17391 0 15757 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 47600 0 47600 3 2 1 1 0 8 1 scsiplug 64 15 0 15 4 4 0 1 0 8 0 scxspl 192 56157 0 56157 17 16 1 6 0 8 1 plimitpl 152 320 0 313 1 0 1 1 0 8 0 sigapl 432 5668 0 5654 2 0 2 2 0 8 0 futexpl 56 51935 0 51935 4 3 1 1 0 8 1 knotepl 112 843 0 824 1 0 1 1 0 8 0 kqueuepl 104 891 0 889 1 0 1 1 0 8 0 pipepl 112 1864 0 1845 4 3 1 2 0 8 0 fdescpl 424 5669 0 5654 2 0 2 2 0 8 0 filepl 120 23055 0 22961 5 1 4 4 0 8 1 lockfpl 104 1326 0 1326 8 7 1 1 0 8 1 lockfspl 48 485 0 485 8 7 1 1 0 8 1 sessionpl 112 22 0 12 1 0 1 1 0 8 0 pgrppl 48 40 0 30 1 0 1 1 0 8 0 ucredpl 96 4631 0 4624 1 0 1 1 0 8 0 zombiepl 144 5654 0 5654 3 2 1 1 0 8 1 processpl 864 5685 0 5654 4 0 4 4 0 8 0 procpl 632 12144 0 12105 4 0 4 4 0 8 0 sosppl 128 99 0 99 9 9 0 1 0 8 0 sockpl 384 3023 0 3006 8 4 4 4 0 8 2 mcl64k 65536 660 0 660 40 39 1 33 0 8 1 mcl16k 16384 4 0 4 3 3 0 1 0 8 0 mcl12k 12288 67 0 67 7 6 1 1 0 8 1 mcl9k 9216 91 0 91 11 10 1 1 0 8 1 mcl8k 8192 27 0 27 7 6 1 1 0 8 1 mcl4k 4096 222 0 220 8 7 1 1 0 8 0 mcl2k2 2112 5 0 5 4 4 0 1 0 8 0 mcl2k 2048 26323 0 26278 24 17 7 12 0 8 1 mtagpl 80 105 0 56 4 2 2 2 0 8 0 mbufpl 256 95326 0 95151 38 24 14 22 0 8 1 bufpl 256 17577 0 11915 355 0 355 355 0 8 0 anonpl 16 460091 0 455538 93 72 21 35 0 62 0 amapchunkpl 152 21976 0 21893 26 22 4 14 0 158 0 amappl16 192 26586 0 26378 76 65 11 22 0 8 0 amappl15 184 1408 0 1405 1 0 1 1 0 8 0 amappl14 176 1478 0 1468 1 0 1 1 0 8 0 amappl13 168 1474 0 1472 2 1 1 1 0 8 0 amappl12 160 2568 0 2567 1 0 1 1 0 8 0 amappl11 152 61 0 50 1 0 1 1 0 8 0 amappl10 144 67 0 67 6 6 0 1 0 8 0 amappl9 136 578 0 575 1 0 1 1 0 8 0 amappl8 128 156 0 137 1 0 1 1 0 8 0 amappl7 120 42 0 36 1 0 1 1 0 8 0 amappl6 112 54 0 48 1 0 1 1 0 8 0 amappl5 104 2723 0 2713 1 0 1 1 0 8 0 amappl4 96 1969 0 1941 1 0 1 1 0 8 0 amappl3 88 5714 0 5699 1 0 1 1 0 8 0 amappl2 80 46062 0 45985 4 2 2 3 0 8 0 amappl1 72 102974 0 102567 24 13 11 19 0 8 0 amappl 80 12453 0 12419 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 132 0 3 3 0 3 3 0 8 0 uaddrrnd 24 5669 0 5654 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5669 0 5654 1 0 1 1 0 8 0 vmmpekpl 168 29322 0 29294 2 0 2 2 0 8 0 vmmpepl 168 649014 0 647680 152 92 60 74 0 357 2 vmsppl 272 5668 0 5654 3 2 1 2 0 8 0 pdppl 4096 11345 0 11308 7 2 5 6 0 8 0 pvpl 32 1511878 0 1504108 296 224 72 200 0 265 8 pmappl 200 5668 0 5654 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 591 0 104 16 0 16 16 0 8 0