login: panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *473059 56472 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0771) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806c4e5b10,ffff80002a786a68) at vgonel+0x663 vrecycle(fffffd806c4e5b10,ffff80002a786a68) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f39d0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c4e5b10,ffff80002a786a68) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806c4e5b10) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd8064bf2010,fffffd806c4e5b10,ffff80002a8f3b38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786a68,ffffff9c,7332ae4aa7d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f3ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f3ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7332ae4aac80, count: 4 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 *cpu0: missing alias ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0771) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806c4e5b10,ffff80002a786a68) at vgonel+0x663 vrecycle(fffffd806c4e5b10,ffff80002a786a68) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f39d0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c4e5b10,ffff80002a786a68) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806c4e5b10) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd8064bf2010,fffffd806c4e5b10,ffff80002a8f3b38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786a68,ffffff9c,7332ae4aa7d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f3ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f3ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7332ae4aac80, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a8f3810 rbx 0xfffffd806c4e5b10 rdx 0 rcx 0 rax 0xffff80002a786a68 r8 0x101010101010101 r9 0x8080808080808080 r10 0x3e204d5b3a818d2b r11 0x1a523682d979bae5 r12 0 r13 0x2909 __ALIGN_SIZE+0x1909 r14 0 r15 0x1 rip 0xffffffff82ae3bc5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a8f3800 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=473059 pid=56472 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a786f98,0xffff80002f100fb8 process=0xffff80002a7efa90 user=0xffff80002a8ee000, vmspace=0xfffffd807dfcf8a8 estcpu=36, cpticks=4, pctcpu=0.0, user=1, sys=3, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 47306 275893 75831 0 2 0 syz-executor 47306 319501 75831 0 3 0x4000080 fsleep syz-executor 47907 183475 22237 0 2 0 syz-executor 47907 516523 22237 0 3 0x4000080 fsleep syz-executor 81117 91059 16000 0 2 0 syz-executor 81117 458721 16000 0 3 0x4000080 pipewr syz-executor 81117 469773 16000 0 3 0x4000080 fsleep syz-executor 81117 467253 16000 0 3 0x4000080 pipewr syz-executor 14779 164129 33556 0 3 0x80 nanoslp syz-executor 14779 481698 33556 0 3 0x4000080 sbwait syz-executor 14779 143525 33556 0 3 0x4000080 fsleep syz-executor 14779 289878 33556 0 3 0x4000080 fsleep syz-executor 62271 448126 70829 0 2 0x100002 sh 70829 246293 77498 0 3 0x82 wait syz-executor 33556 318329 77498 0 3 0x82 nanoslp syz-executor 27866 412261 77498 0 2 0x2 syz-executor 38744 275269 1 0 3 0x100083 ttyin getty 42634 486374 0 0 3 0x14280 nfsidl nfsio 39498 481842 0 0 3 0x14280 nfsidl nfsio 24864 120891 0 0 3 0x14280 nfsidl nfsio 30341 26567 0 0 3 0x14280 nfsidl nfsio 77029 288513 0 0 3 0x14280 nfsidl nfsio 83751 306930 0 0 3 0x14280 nfsidl nfsio 80876 318700 0 0 3 0x14280 nfsidl nfsio 16297 277681 0 0 3 0x14280 nfsidl nfsio 89290 382091 0 0 3 0x14280 nfsidl nfsio 56397 406505 0 0 3 0x14280 nfsidl nfsio 42076 273699 0 0 3 0x14280 nfsidl nfsio 29044 363755 0 0 3 0x14280 nfsidl nfsio 65241 411789 0 0 3 0x14280 nfsidl nfsio 60845 35091 0 0 3 0x14280 nfsidl nfsio 90697 244401 0 0 3 0x14280 nfsidl nfsio 99749 504106 0 0 3 0x14280 nfsidl nfsio 88989 256133 0 0 3 0x14280 nfsidl nfsio 7975 502242 0 0 3 0x14280 nfsidl nfsio 80784 31170 0 0 3 0x14280 nfsidl nfsio 33404 237726 0 0 3 0x14280 nfsidl nfsio *56472 473059 77498 0 7 0x2 syz-executor 16000 519788 77498 0 3 0x82 nanoslp syz-executor 24967 26039 77498 0 2 0x2 syz-executor 75831 169780 77498 0 3 0x82 nanoslp syz-executor 22237 479130 77498 0 3 0x82 nanoslp syz-executor 77498 70545 57492 0 3 0x82 kqread syz-executor 57492 144609 53144 0 3 0x10008a sigsusp ksh 53144 522700 93458 0 3 0x98 kqread sshd-session 93458 100300 84355 0 3 0x92 kqread sshd-session 84355 161592 1 0 3 0x88 kqread sshd 33169 326453 10075 73 3 0x1100090 kqread syslogd 10075 439528 1 0 3 0x100082 sbwait syslogd 81273 295508 1 0 3 0x100080 kqread resolvd 75070 291633 67347 77 3 0x100092 kqread dhcpleased 14865 70549 67347 77 3 0x100092 kqread dhcpleased 67347 62348 1 0 3 0x80 kqread dhcpleased 24498 471395 0 0 3 0x14200 bored smr 88619 295533 0 0 2 0x14200 zerothread 86632 13937 0 0 3 0x14200 aiodoned aiodoned 29336 466823 0 0 3 0x14200 syncer update 53193 377009 0 0 3 0x14200 cleaner cleaner 23181 357954 0 0 3 0x14200 reaper reaper 63257 269862 0 0 3 0x14200 pgdaemon pagedaemon 75000 261819 0 0 3 0x14200 bored viomb 53487 300924 0 0 3 0x40014200 acpi0 acpi0 94690 278001 0 0 2 0x14200 softnet0 27985 110008 0 0 3 0x14200 bored systqmp 11836 214116 0 0 3 0x14200 bored systq 59202 381768 0 0 3 0x40014200 tmoslp softclock 30204 85705 0 0 3 0x40014200 idle0 1 29907 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10267 11159K 11439K 166960K 11942 0 pcb 17 15K 16K 166960K 151 0 rtable 214 8K 9K 166960K 700 0 pf 32 13K 20K 166960K 119 0 ifaddr 38 6K 8K 166960K 117 0 ifgroup 50 2K 2K 166960K 168 0 sysctl 3 1K 9K 166960K 9 0 counters 32 17K 18K 166960K 112 0 ioctlops 0 0K 4K 166960K 299 0 iov 0 0K 16K 166960K 38 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1404 88K 89K 166960K 1946 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 738 0 sigio 0 0K 0K 166960K 15 0 proc 65 67K 91K 166960K 840 0 subproc 72 4K 4K 166960K 189 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 68 0 in_multi 87 6K 7K 166960K 230 0 ether_multi 1 0K 0K 166960K 8 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 527 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 206 135K 148K 166960K 7559 0 UVM aobj 45 4K 4K 166960K 48 0 pinsyscall 37 74K 90K 166960K 2086 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 58 0 NDP 11 0K 2K 166960K 81 0 temp 74 8651K 8715K 166960K 21482 0 kqueue 13 20K 28K 166960K 120 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 91 0 87 1 0 1 1 0 8 0 rtentry 136 220 0 134 4 0 4 4 0 8 0 unpcb 144 369 0 352 5 1 4 4 0 8 3 syncache 336 6 0 6 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 123 0 117 2 1 1 2 0 8 0 arp 96 37 0 22 1 0 1 1 0 8 0 inpcb 328 645 0 634 13 8 5 12 0 8 3 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 3 1 0 1 1 0 8 0 nd6 112 51 0 30 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 1 1 1 0 8 1 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1072 59 0 59 1 0 1 1 0 8 1 pppxif 1384 4 0 4 1 1 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 1 1 0 1 1 0 8 0 pfstate 384 2 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 959 0 585 33 3 30 30 0 8 3 art_table 40 961 0 585 5 0 5 5 0 8 0 art_node 32 220 0 143 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 45 0 3 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2450 0 928 96 0 96 96 0 8 0 ffsino 256 2450 0 928 96 0 96 96 0 8 0 nchpl 144 3291 0 1568 65 0 65 65 0 8 0 rtmask 32 7 0 7 1 0 1 1 0 8 1 vnodes 216 2877 0 0 160 0 160 160 0 8 0 namei 1024 11686 0 11685 3 2 1 2 0 8 0 kstatmem 264 92 0 70 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 9847 0 9847 9 1 8 8 1 8 8 plimitpl 152 220 0 204 1 0 1 1 0 8 0 sigapl 424 1014 0 953 8 0 8 8 0 8 0 knotepl 120 30119 0 30072 25 14 11 18 0 8 8 kqueuepl 184 166 0 157 2 1 1 2 0 8 0 pipepl 304 204 0 173 3 0 3 3 0 8 0 fdescpl 448 979 0 951 5 1 4 5 0 8 0 filepl 120 5063 0 4773 13 4 9 12 0 8 0 lockfpl 104 138 0 134 1 0 1 1 0 8 0 lockfspl 48 61 0 57 1 0 1 1 0 8 0 sessionpl 144 38 0 30 1 0 1 1 0 8 0 pgrppl 48 67 0 51 1 0 1 1 0 8 0 ucredpl 104 886 0 875 1 0 1 1 0 8 0 zombiepl 144 1080 0 1080 1 0 1 1 0 8 1 processpl 1152 1014 0 953 5 0 5 5 0 8 0 procpl 664 1723 0 1654 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 1 0 1 0 8 0 sockpl 552 1172 0 1140 15 7 8 12 0 8 5 mcl64k 65536 62 0 62 2 1 1 1 0 8 1 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 1 0 1 0 8 0 mcl4k 4096 3036 0 2979 15 7 8 15 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 1066 0 1059 4 2 2 3 0 8 1 mtagpl 96 5 0 5 1 1 0 1 0 8 0 mbufpl 256 12133 0 11953 21 3 18 18 0 8 4 bufpl 280 3105 0 121 214 0 214 214 0 8 0 anonpl 24 147645 0 144636 45 0 45 45 0 187 21 amapchunkpl 152 23262 0 22861 32 6 26 27 0 158 6 amappl16 200 2448 0 2424 15 4 11 15 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 9 0 9 1 1 0 1 0 8 0 amappl13 176 592 0 590 1 0 1 1 0 8 0 amappl12 168 1388 0 1352 2 0 2 2 0 8 0 amappl11 160 51 0 51 1 1 0 1 0 8 0 amappl10 152 41 0 31 1 0 1 1 0 8 0 amappl9 144 264 0 263 1 0 1 1 0 8 0 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 122 0 121 1 0 1 1 0 8 0 amappl6 120 386 0 373 1 0 1 1 0 8 0 amappl5 112 71 0 63 1 0 1 1 0 8 0 amappl4 104 444 0 420 1 0 1 1 0 8 0 amappl3 96 4095 0 4019 3 0 3 3 0 8 0 amappl2 88 1071 0 1003 2 0 2 2 0 8 0 amappl1 80 12688 0 12152 13 0 13 13 0 8 0 amappl 88 6597 0 6457 6 1 5 5 0 92 1 uvmvnodes 80 2877 0 0 59 0 59 59 0 8 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 7 0 7 2 1 1 1 0 8 1 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 47 0 3 1 0 1 1 0 8 0 uaddrrnd 24 979 0 951 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 979 0 951 1 0 1 1 0 8 0 vmmpekpl 168 9561 0 9514 3 0 3 3 0 8 0 vmmpepl 168 69122 0 67462 93 2 91 91 0 357 9 vmsppl 368 978 0 951 4 1 3 4 0 8 0 rwobjpl 40 23748 0 20001 39 0 39 39 0 8 0 pdppl 4096 1965 0 1902 117 48 69 79 0 8 6 pvpl 32 410655 0 402861 111 1 110 110 0 265 25 pmappl 216 978 0 951 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 408 0 73 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0771) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806c4e5b10,ffff80002a786a68) at vgonel+0x663 vrecycle(fffffd806c4e5b10,ffff80002a786a68) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f39d0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c4e5b10,ffff80002a786a68) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806c4e5b10) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd8064bf2010,fffffd806c4e5b10,ffff80002a8f3b38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786a68,ffffff9c,7332ae4aa7d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f3ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f3ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7332ae4aac80, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0771) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806c4e5b10,ffff80002a786a68) at vgonel+0x663 vrecycle(fffffd806c4e5b10,ffff80002a786a68) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f39d0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c4e5b10,ffff80002a786a68) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806c4e5b10) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd8064bf2010,fffffd806c4e5b10,ffff80002a8f3b38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786a68,ffffff9c,7332ae4aa7d0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f3ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f3ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7332ae4aac80, count: -11