#!#!panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *221470 38858 0 0x2 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83318bae) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd806c315878,ffff80002a43ad18) at vgonel+0x681 sys/kern/vfs_subr.c:1218 vrecycle(fffffd806c315878,ffff80002a43ad18) at vrecycle+0x7c sys/kern/vfs_subr.c:1144 ufs_inactive(ffff80002a441088) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c315878,ffff80002a43ad18) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806c315878) at vput+0xe5 sys/kern/vfs_subr.c:797 VOP_REMOVE(fffffd8061865dd8,fffffd806c315878,ffff80002a441208) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a43ad18,ffffff9c,7aae10be1ee0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1902 syscall(ffff80002a441380) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a441380) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aae10be2390, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: missing alias ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83318bae) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd806c315878,ffff80002a43ad18) at vgonel+0x681 sys/kern/vfs_subr.c:1218 vrecycle(fffffd806c315878,ffff80002a43ad18) at vrecycle+0x7c sys/kern/vfs_subr.c:1144 ufs_inactive(ffff80002a441088) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c315878,ffff80002a43ad18) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806c315878) at vput+0xe5 sys/kern/vfs_subr.c:797 VOP_REMOVE(fffffd8061865dd8,fffffd806c315878,ffff80002a441208) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a43ad18,ffffff9c,7aae10be1ee0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1902 syscall(ffff80002a441380) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a441380) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aae10be2390, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a440ec0 rbx 0xffffffff83842dc7 cpu_info_full_primary+0x2dc7 rdx 0 rcx 0xffff80002a43ad18 rax 0xffffffff83841ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xeb456d73846fbecd r11 0xfa258e60e0856093 r12 0xffffffff83842bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff816c52d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a440eb0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=221470 pid=38858 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=0xffff80002a42e2d0,0xffff80002a43afb8 process=0xffff80003c518958 user=0xffff80002a43c000, vmspace=0xfffffd806eb0b008 estcpu=36, cpticks=1, pctcpu=0.3, user=3, sys=28, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41967 139782 39240 0 3 0 vmmaplk syz-executor 41967 373617 39240 0 2 0x4000000 syz-executor 41967 392162 39240 0 2 0x4000000 syz-executor 11591 499416 33104 0 2 0 syz-executor 11591 54330 33104 0 3 0x4000080 fsleep syz-executor 4944 388222 85696 0 2 0 syz-executor 4944 21680 85696 0 3 0x4000080 fsleep syz-executor 84707 278472 96016 0 2 0 syz-executor 84707 367086 96016 0 3 0x4000080 ttyin syz-executor 84707 520766 96016 0 2 0x4000000 syz-executor 32382 90601 8174 0 2 0 syz-executor 32382 479170 8174 0 3 0x4000080 fsleep syz-executor 32382 272669 8174 0 2 0x4000000 syz-executor 97474 264017 44218 0 2 0x100002 sh 15997 229547 28201 0 2 0 syz-executor 15997 504806 28201 0 3 0x4000080 fsleep syz-executor 44218 295806 8725 0 3 0x82 wait syz-executor 61824 31218 1 0 3 0x100083 ttyin getty 28201 305994 8725 0 3 0x82 nanoslp syz-executor 96016 39473 8725 0 2 0x3 syz-executor 39240 369921 8725 0 3 0x82 nanoslp syz-executor 33104 53641 8725 0 3 0x82 nanoslp syz-executor *38858 221470 8725 0 7 0x2 syz-executor 3265 62952 0 0 3 0x14280 nfsidl nfsio 747 403495 0 0 3 0x14280 nfsidl nfsio 21984 67431 0 0 3 0x14280 nfsidl nfsio 92686 513727 0 0 3 0x14280 nfsidl nfsio 95365 383772 0 0 3 0x14280 nfsidl nfsio 54463 182283 0 0 3 0x14280 nfsidl nfsio 77044 89095 0 0 3 0x14280 nfsidl nfsio 95118 152188 0 0 3 0x14280 nfsidl nfsio 66461 372831 0 0 3 0x14280 nfsidl nfsio 76042 333284 0 0 3 0x14280 nfsidl nfsio 35693 145118 0 0 3 0x14280 nfsidl nfsio 9362 394602 0 0 3 0x14280 nfsidl nfsio 6850 518307 0 0 3 0x14280 nfsidl nfsio 30431 160106 0 0 3 0x14280 nfsidl nfsio 48180 356807 0 0 3 0x14280 nfsidl nfsio 43463 65351 0 0 3 0x14280 nfsidl nfsio 48364 127594 0 0 3 0x14280 nfsidl nfsio 30188 197120 0 0 3 0x14280 nfsidl nfsio 60339 163250 0 0 3 0x14280 nfsidl nfsio 43839 188217 0 0 3 0x14280 nfsidl nfsio 55893 461155 0 0 3 0x14200 bored sosplice 95937 366078 59671 0 3 0x100082 sbwait arp 59671 54623 1 0 3 0x10008a sigsusp sh 85696 498471 8725 0 3 0x82 nanoslp syz-executor 8174 55528 8725 0 2 0x3 syz-executor 8725 445703 68389 0 2 0x3 syz-executor 68389 310354 81610 0 3 0x10008a sigsusp ksh 81610 216469 43046 0 3 0x98 kqread sshd-session 43046 360893 76117 0 3 0x92 kqread sshd-session 76117 290816 1 0 3 0x88 kqread sshd 66754 40369 74398 74 3 0x1100092 bpf pflogd 74398 378045 1 0 3 0x80 sbwait pflogd 41552 44822 73031 73 3 0x1100090 kqread syslogd 73031 294696 1 0 3 0x100082 sbwait syslogd 68651 389118 1 0 3 0x100080 kqread resolvd 47769 459918 46133 77 3 0x100092 kqread dhcpleased 67821 394792 46133 77 3 0x100092 kqread dhcpleased 46133 392910 1 0 3 0x80 kqread dhcpleased 17143 420131 0 0 3 0x14200 bored smr 63056 401153 0 0 2 0x14200 zerothread 659 50918 0 0 3 0x14200 aiodoned aiodoned 90565 6978 0 0 3 0x14200 syncer update 28642 435831 0 0 3 0x14200 cleaner cleaner 77114 256626 0 0 3 0x14200 reaper reaper 71727 33677 0 0 3 0x14200 pgdaemon pagedaemon 34852 500948 0 0 3 0x14200 bored viomb 50317 456164 0 0 3 0x40014200 acpi0 acpi0 50404 485252 0 0 7 0x40014200 idle1 32259 397098 0 0 3 0x14200 bored softnet3 59261 418001 0 0 3 0x14200 bored softnet2 55547 242838 0 0 3 0x14200 bored softnet1 77501 53053 0 0 3 0x14200 bored softnet0 424 244212 0 0 3 0x14200 bored systqmp 55056 72643 0 0 3 0x14200 bored systq 47730 112666 0 0 3 0x14200 tmoslp softclockmp 39343 320277 0 0 3 0x40014200 tmoslp softclock 92311 136066 0 0 3 0x40014200 idle0 1 90794 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 41967 (syz-executor) thread 0xffff8000ffff7738 (373617) Process 41967 (syz-executor) thread 0xffff8000ffff74a8 (392162) Process 84707 (syz-executor) thread 0xffff80003c51c2c0 (367086) Process 84707 (syz-executor) thread 0xffff8000ffff6028 (520766) Process 32382 (syz-executor) thread 0xffff80002a43a048 (272669) Process 97474 (sh) thread 0xffff80002a43b238 (264017) Process 38858 (syz-executor) thread 0xffff80002a43ad18 (221470) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10223 11052K 11724K 166960K 14821 0 pcb 17 15K 17K 166960K 707 0 rtable 203 13K 14K 166960K 852 0 pf 45 19K 25K 166960K 285 0 ifaddr 40 7K 8K 166960K 200 0 ifgroup 66 2K 3K 166960K 381 0 sysctl 4 1K 3K 166960K 8 0 counters 72 37K 37K 166960K 484 0 ioctlops 0 0K 4K 166960K 1905 0 iov 0 0K 28K 166960K 315 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1560 98K 98K 166960K 3522 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 16K 24K 166960K 54 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 91 0 dirhash 15 2K 2K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 73K 240K 166960K 2118 0 sigio 0 0K 0K 166960K 37 0 proc 72 91K 140K 166960K 927 0 subproc 81 5K 5K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 484 0 in_multi 65 5K 6K 166960K 259 0 ether_multi 1 0K 0K 166960K 20 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 139 625K 625K 166960K 139 0 exec 0 0K 1K 166960K 784 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 237 73K 88K 166960K 20841 0 UVM aobj 59 6K 6K 166960K 64 0 pinsyscall 46 92K 110K 166960K 3414 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 171 0 NDP 15 0K 1K 166960K 124 0 temp 80 8656K 8912K 166960K 59904 0 kqueue 13 20K 30K 166960K 373 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 291 0 287 4 3 1 3 0 8 0 rtentry 112 245 0 169 5 1 4 4 0 8 0 unpcb 144 2000 0 1981 12 11 1 10 0 8 0 syncache 336 8 0 8 3 3 0 1 0 8 0 tcpcb 808 770 0 766 9 8 1 8 0 8 0 arp 120 36 0 20 1 0 1 1 0 8 0 inpcb 376 2628 0 2620 17 9 8 11 0 8 7 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 44 0 27 1 0 1 1 0 8 0 pkpcb 40 85 0 85 3 3 0 1 0 8 0 kcovpl 48 15 0 6 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1168 152 0 150 1 0 1 1 0 8 0 pppxif 1472 72 0 71 2 1 1 1 0 8 0 pffrag 232 12 0 4 1 0 1 1 0 482 0 pffrnode 88 12 0 4 1 0 1 1 0 8 0 pffrent 40 24 0 16 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 14 0 6 1 0 1 1 0 8 0 pfanchor 1288 3 0 2 1 0 1 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 114 0 35 1 0 1 1 0 8 0 pfstkey 128 114 0 35 3 0 3 3 0 8 0 pfstate 376 113 0 35 9 0 9 9 0 8 0 pfrule 1344 34 0 24 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1020 0 710 27 6 21 27 0 8 0 art_table 32 1023 0 710 4 0 4 4 0 8 0 art_node 16 236 0 172 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 16 1 0 1 1 0 8 0 semapl 112 85 0 75 1 0 1 1 0 8 0 shmpl 112 61 0 5 2 0 2 2 0 8 0 dirhash 1024 56 0 37 3 0 3 3 0 8 0 dino2pl 256 5527 0 4012 95 0 95 95 0 8 0 ffsino 280 5527 0 4012 109 0 109 109 0 8 0 nchpl 144 8345 0 6635 64 0 64 64 0 8 0 rtmask 32 12 0 12 3 3 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 31692 0 31691 5 3 2 2 0 8 1 percpumem 16 256 0 206 1 0 1 1 0 8 0 pfiaddrpl 120 6 0 2 1 0 1 1 0 8 0 kstatmem 264 192 0 162 6 3 3 3 0 8 0 scsiplug 72 8 0 8 5 4 1 1 0 8 1 scxspl 216 26646 0 26646 13 12 1 8 1 8 1 plimitpl 152 641 0 623 1 0 1 1 0 8 0 sigapl 424 2431 0 2358 11 2 9 9 0 8 0 futexpl 64 30899 0 30895 1 0 1 1 0 8 0 knotepl 120 587 0 0 18 0 18 18 0 8 0 kqueuepl 216 930 0 920 11 10 1 5 0 8 0 pipepl 328 397 0 367 6 3 3 6 0 8 0 fdescpl 504 2389 0 2355 6 1 5 6 0 8 0 filepl 152 18738 0 18507 28 16 12 18 0 8 0 lockfpl 104 785 0 782 2 1 1 2 0 8 0 lockfspl 48 249 0 246 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 79 0 61 1 0 1 1 0 8 0 ucredpl 104 3490 0 3476 1 0 1 1 0 8 0 zombiepl 144 2372 0 2372 3 2 1 1 0 8 1 processpl 1176 2431 0 2358 6 0 6 6 0 8 0 procpl 656 5436 0 5354 10 2 8 8 0 8 0 srpgc 96 17 0 17 3 3 0 1 0 8 0 sosppl 168 17 0 17 4 4 0 1 0 8 0 sockpl 688 5026 0 4995 43 34 9 26 0 8 5 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 34 0 0 4 0 4 4 0 8 0 mtagpl 96 203 0 0 5 0 5 5 0 8 0 mbufpl 256 362 0 0 21 0 21 21 0 8 0 bufpl 280 9244 0 3089 440 0 440 440 0 8 0 anonpl 24 295153 0 288759 96 48 48 72 0 184 0 amapchunkpl 152 67462 0 66882 47 21 26 33 0 158 1 amappl16 200 5997 0 5883 45 36 9 22 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 136 0 123 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 3153 0 3118 4 2 2 3 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 34 0 34 2 2 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 148 0 135 1 0 1 1 0 8 0 amappl6 120 243 0 238 1 0 1 1 0 8 0 amappl5 112 151 0 140 1 0 1 1 0 8 0 amappl4 104 368 0 347 1 0 1 1 0 8 0 amappl3 96 14184 0 14068 4 0 4 4 0 8 0 amappl2 88 819 0 753 2 0 2 2 0 8 0 amappl1 80 15420 0 14815 17 3 14 15 0 8 0 amappl 88 20255 0 20078 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 257 0 257 4 4 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 63 0 5 2 0 2 2 0 8 0 uaddrrnd 24 2389 0 2355 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2389 0 2355 1 0 1 1 0 8 0 vmmpekpl 168 19069 0 19008 4 0 4 4 0 8 0 vmmpepl 168 149053 0 147029 116 23 93 103 0 357 0 vmsppl 456 2388 0 2355 5 0 5 5 0 8 0 rwobjpl 64 44083 0 37021 119 4 115 118 0 8 0 pdppl 4096 4785 0 4710 127 50 77 87 0 8 2 pvpl 32 20260 0 0 163 0 163 163 0 265 0 pmappl 248 2388 0 2355 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 329 0 76 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83318bae) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd806c315878,ffff80002a43ad18) at vgonel+0x681 sys/kern/vfs_subr.c:1218 vrecycle(fffffd806c315878,ffff80002a43ad18) at vrecycle+0x7c sys/kern/vfs_subr.c:1144 ufs_inactive(ffff80002a441088) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806c315878,ffff80002a43ad18) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd806c315878) at vput+0xe5 sys/kern/vfs_subr.c:797 VOP_REMOVE(fffffd8061865dd8,fffffd806c315878,ffff80002a441208) at VOP_REMOVE+0x19d sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a43ad18,ffffff9c,7aae10be1ee0,0) at dounlinkat+0x177 sys/kern/vfs_syscalls.c:1902 syscall(ffff80002a441380) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a441380) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7aae10be2390, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029aabff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029aabff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029aabff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029aabff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5