panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *345620 53786 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8330e3ed) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd80656e2a30,ffff80002a777230) at vgonel+0x663 vrecycle(fffffd80656e2a30,ffff80002a777230) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a8c4cd0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd80656e2a30,ffff80002a777230) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd80656e2a30) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd80656e2d90,fffffd80656e2a30,ffff80002a8c4e38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a777230,ffffff9c,7d1e77d49ef0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8c4fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8c4fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1e77d4a3a0, 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(ffffffff8330e3ed) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd80656e2a30,ffff80002a777230) at vgonel+0x663 vrecycle(fffffd80656e2a30,ffff80002a777230) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a8c4cd0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd80656e2a30,ffff80002a777230) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd80656e2a30) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd80656e2d90,fffffd80656e2a30,ffff80002a8c4e38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a777230,ffffff9c,7d1e77d49ef0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8c4fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8c4fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1e77d4a3a0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a8c4b10 rbx 0xfffffd80656e2a30 rdx 0 rcx 0 rax 0xffff80002a777230 r8 0x101010101010101 r9 0x8080808080808080 r10 0x583ad5a6ba8479c3 r11 0xcc626ec88aa75642 r12 0 r13 0x2909 __ALIGN_SIZE+0x1909 r14 0 r15 0x1 rip 0xffffffff824d60c5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a8c4b00 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=345620 pid=53786 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=0xffff80002a776008,0xffff80002a776548 process=0xffff80002a7de890 user=0xffff80002a8c0000, vmspace=0xfffffd806f5092e8 estcpu=36, cpticks=6, pctcpu=0.0, user=0, sys=6, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40312 62971 22761 0 2 0 syz-executor 79790 379250 21552 0 2 0 syz-executor 79790 460756 21552 0 3 0x4000080 fsleep syz-executor 14661 267068 40722 0 2 0x82000 syz-executor 14661 387331 40722 0 3 0x4002000 suspend syz-executor 44441 469396 17957 0 3 0x80 nanoslp syz-executor 44441 325031 17957 0 3 0x4000080 kqread syz-executor 44441 410682 17957 0 3 0x4000080 fsleep syz-executor 6341 435034 7526 -1 2 0x10 syz-executor 6341 429218 7526 -1 2 0x4000010 syz-executor 6341 502885 7526 -1 3 0x4000090 fsleep syz-executor 22134 71868 99250 0 2 0 syz-executor 22134 373995 99250 0 3 0x4000080 fsleep syz-executor 22134 402520 99250 0 3 0x4000080 fsleep syz-executor 22761 6416 51464 0 3 0x82 nanoslp syz-executor 68314 87458 0 0 3 0x14280 nfsidl nfsio 4525 162657 0 0 3 0x14280 nfsidl nfsio 98965 428065 0 0 3 0x14280 nfsidl nfsio 81073 76983 0 0 3 0x14280 nfsidl nfsio 74469 318014 0 0 3 0x14280 nfsidl nfsio 42299 134327 0 0 3 0x14280 nfsidl nfsio 56639 189544 0 0 3 0x14280 nfsidl nfsio 66996 49915 0 0 3 0x14280 nfsidl nfsio 8222 362516 0 0 3 0x14280 nfsidl nfsio 22355 156123 0 0 3 0x14280 nfsidl nfsio 81667 279545 0 0 3 0x14280 nfsidl nfsio 18853 72572 0 0 3 0x14280 nfsidl nfsio 82924 233084 0 0 3 0x14280 nfsidl nfsio 46968 292722 0 0 3 0x14280 nfsidl nfsio 37118 438597 0 0 3 0x14280 nfsidl nfsio 30920 44877 0 0 3 0x14280 nfsidl nfsio 75971 153175 0 0 3 0x14280 nfsidl nfsio 88964 140066 0 0 3 0x14280 nfsidl nfsio 85136 501264 0 0 3 0x14280 nfsidl nfsio 87528 45520 0 0 3 0x14280 nfsidl nfsio 17727 355987 51464 0 2 0x2 syz-executor 96233 437054 0 0 3 0x14200 acct acct 99250 15907 51464 0 3 0x82 nanoslp syz-executor *53786 345620 51464 0 7 0x2 syz-executor 40722 353615 51464 0 3 0x82 nanoslp syz-executor 17957 51619 51464 0 3 0x82 nanoslp syz-executor 7526 419571 51464 0 3 0x82 nanoslp syz-executor 21552 405885 51464 0 3 0x82 nanoslp syz-executor 51464 363877 89049 0 2 0x2 syz-executor 89049 6911 66236 0 3 0x10008a sigsusp ksh 66236 207227 62113 0 3 0x98 kqread sshd-session 62113 73072 22010 0 3 0x92 kqread sshd-session 20234 46721 1 0 3 0x100083 ttyin getty 22010 364475 1 0 3 0x88 kqread sshd 63394 253489 71682 73 3 0x1100090 kqread syslogd 71682 84003 1 0 3 0x100082 sbwait syslogd 49819 107896 1 0 3 0x100080 kqread resolvd 85468 400709 9319 77 3 0x100092 kqread dhcpleased 81054 238371 9319 77 3 0x100092 kqread dhcpleased 9319 251292 1 0 3 0x80 kqread dhcpleased 81274 271178 0 0 3 0x14200 bored smr 58412 368071 0 0 2 0x14200 zerothread 78016 305620 0 0 3 0x14200 aiodoned aiodoned 61345 264998 0 0 3 0x14200 syncer update 15005 394909 0 0 3 0x14200 cleaner cleaner 44413 340013 0 0 3 0x14200 reaper reaper 8719 202231 0 0 3 0x14200 pgdaemon pagedaemon 34492 516113 0 0 3 0x14200 bored viomb 70272 48734 0 0 3 0x40014200 acpi0 acpi0 19945 181516 0 0 3 0x14200 bored softnet0 42795 25669 0 0 3 0x14200 bored systqmp 88019 366134 0 0 3 0x14200 bored systq 65302 162507 0 0 3 0x40014200 tmoslp softclock 10009 35365 0 0 3 0x40014200 idle0 1 58926 0 0 3 0x80082 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 devbuf 11057 12114K 12493K 166960K 13153 0 pcb 18 13K 13K 166960K 108 0 rtable 239 9K 9K 166960K 492 0 pf 28 12K 14K 166960K 64 0 ifaddr 37 6K 7K 166960K 68 0 ifgroup 43 1K 2K 166960K 90 0 sysctl 4 1K 9K 166960K 9 0 counters 32 17K 18K 166960K 55 0 ioctlops 0 0K 4K 166960K 177 0 iov 0 0K 21K 166960K 28 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1366 86K 86K 166960K 1908 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 13 0 dirhash 12 2K 3K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 110K 166960K 615 0 sigio 0 0K 0K 166960K 45 0 proc 62 75K 124K 166960K 565 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 40 0 in_multi 87 6K 7K 166960K 126 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 463 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 213 142K 159K 166960K 7290 0 UVM aobj 85 14K 14K 166960K 87 0 pinsyscall 37 74K 96K 166960K 1728 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 10 0K 2K 166960K 47 0 temp 50 8669K 8736K 166960K 28897 0 kqueue 13 20K 31K 166960K 141 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 81 0 78 1 0 1 1 0 8 0 rtentry 136 139 0 40 4 0 4 4 0 8 0 unpcb 144 571 0 549 5 1 4 4 0 8 2 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 134 0 130 4 3 1 4 0 8 0 arp 96 23 0 8 1 0 1 1 0 8 0 inpcb 328 558 0 549 11 4 7 7 0 8 5 nd6 112 32 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1072 18 0 18 2 2 0 1 0 8 0 pppxif 1384 1 0 1 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 3 1 0 1 1 0 8 0 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pfstkey 128 1 0 1 1 1 0 1 0 8 0 pfstate 384 1 0 1 1 1 0 1 0 8 0 pfrule 1360 3 0 2 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 593 0 172 30 3 27 30 0 8 0 art_table 40 596 0 172 5 0 5 5 0 8 0 art_node 32 139 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 3 2 1 1 1 0 8 0 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 80 0 2 3 0 3 3 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2508 0 1009 95 0 95 95 0 8 0 ffsino 256 2508 0 1009 95 0 95 95 0 8 0 nchpl 144 3312 0 1615 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 2 0 1 0 8 0 vnodes 216 2891 0 0 161 0 161 161 0 8 0 namei 1024 11401 0 11400 3 2 1 2 0 8 0 vcpupl 3904 4 0 0 1 0 1 1 0 8 0 vmpool 808 4 0 0 1 0 1 1 0 8 0 kstatmem 264 52 0 32 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scxspl 216 10337 0 10337 8 7 1 8 1 8 1 plimitpl 152 317 0 300 1 0 1 1 0 8 0 sigapl 424 911 0 849 9 1 8 8 0 8 0 knotepl 120 21220 0 21173 37 26 11 22 0 8 8 kqueuepl 184 285 0 274 4 3 1 4 0 8 0 pipepl 304 162 0 135 3 0 3 3 0 8 0 fdescpl 448 877 0 849 5 1 4 5 0 8 0 filepl 120 5043 0 4777 13 2 11 11 0 8 1 lockfpl 104 164 0 161 1 0 1 1 0 8 0 lockfspl 48 65 0 62 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 42 0 26 1 0 1 1 0 8 0 ucredpl 104 746 0 734 1 0 1 1 0 8 0 zombiepl 144 920 0 920 3 2 1 1 0 8 1 processpl 1152 911 0 849 5 0 5 5 0 8 0 procpl 664 1621 0 1551 8 0 8 8 0 8 1 sosppl 176 8 0 8 2 2 0 1 0 8 0 sockpl 552 1289 0 1255 15 3 12 12 0 8 8 mcl64k 65536 32 0 31 2 1 1 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 12 0 12 3 2 1 1 0 8 1 mcl4k 4096 3058 0 3002 13 5 8 13 0 8 0 mcl2k 2048 615 0 612 3 1 2 2 0 8 1 mtagpl 96 30 0 8 1 0 1 1 0 8 0 mbufpl 256 9988 0 9774 19 3 16 16 0 8 0 bufpl 280 3284 0 120 226 0 226 226 0 8 0 anonpl 24 152685 0 149724 47 15 32 32 0 187 7 amapchunkpl 152 23887 0 23465 39 13 26 34 0 158 6 amappl16 200 2634 0 2608 7 4 3 6 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 15 0 14 1 0 1 1 0 8 0 amappl13 176 430 0 429 1 0 1 1 0 8 0 amappl12 168 1228 0 1191 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 44 0 34 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 26 0 25 1 0 1 1 0 8 0 amappl7 128 87 0 85 1 0 1 1 0 8 0 amappl6 120 286 0 275 1 0 1 1 0 8 0 amappl5 112 85 0 78 1 0 1 1 0 8 0 amappl4 104 407 0 383 1 0 1 1 0 8 0 amappl3 96 3825 0 3747 3 0 3 3 0 8 0 amappl2 88 983 0 913 2 0 2 2 0 8 0 amappl1 80 10730 0 10190 13 1 12 13 0 8 0 amappl 88 6476 0 6332 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 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 86 0 2 2 0 2 2 0 8 0 uaddrrnd 24 877 0 849 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 877 0 849 1 0 1 1 0 8 0 vmmpekpl 168 8368 0 8324 3 0 3 3 0 8 0 vmmpepl 168 61541 0 59823 86 4 82 83 0 357 1 vmsppl 368 876 0 849 4 1 3 4 0 8 0 rwobjpl 40 18718 0 17703 11 0 11 11 0 8 0 pdppl 4096 1769 0 1702 111 38 73 83 0 8 6 pvpl 32 394763 0 386897 116 25 91 99 0 265 6 pmappl 216 880 0 849 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 402 0 66 11 0 11 11 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(ffffffff8330e3ed) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd80656e2a30,ffff80002a777230) at vgonel+0x663 vrecycle(fffffd80656e2a30,ffff80002a777230) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a8c4cd0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd80656e2a30,ffff80002a777230) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd80656e2a30) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd80656e2d90,fffffd80656e2a30,ffff80002a8c4e38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a777230,ffffff9c,7d1e77d49ef0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8c4fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8c4fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1e77d4a3a0, 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(ffffffff8330e3ed) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd80656e2a30,ffff80002a777230) at vgonel+0x663 vrecycle(fffffd80656e2a30,ffff80002a777230) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a8c4cd0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd80656e2a30,ffff80002a777230) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd80656e2a30) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd80656e2d90,fffffd80656e2a30,ffff80002a8c4e38) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a777230,ffffff9c,7d1e77d49ef0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8c4fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8c4fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1e77d4a3a0, count: -11