login: panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *395114 92667 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83312e78) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806b09d708,ffff80002a776f98) at vgonel+0x663 vrecycle(fffffd806b09d708,ffff80002a776f98) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a88b4f0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806b09d708,ffff80002a776f98) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806b09d708) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b09da68,fffffd806b09d708,ffff80002a88b658) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a776f98,ffffff9c,7492d879b0f0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a88b7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a88b7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7492d879b5a0, 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(ffffffff83312e78) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806b09d708,ffff80002a776f98) at vgonel+0x663 vrecycle(fffffd806b09d708,ffff80002a776f98) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a88b4f0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806b09d708,ffff80002a776f98) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806b09d708) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b09da68,fffffd806b09d708,ffff80002a88b658) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a776f98,ffffff9c,7492d879b0f0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a88b7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a88b7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7492d879b5a0, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a88b330 rbx 0xfffffd806b09d708 rdx 0 rcx 0 rax 0xffff80002a776f98 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc3fa2c55d2a640d8 r11 0xa9830eef78712685 r12 0 r13 0x2909 __ALIGN_SIZE+0x1909 r14 0 r15 0x1 rip 0xffffffff82a94545 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a88b320 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=395114 pid=92667 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=0xffff80002a7b9c98,0xffff80002a7762b0 process=0xffff80002a7dd690 user=0xffff80002a886000, vmspace=0xfffffd807aff5458 estcpu=36, cpticks=17, pctcpu=0.1, user=3, sys=13, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 75387 377459 4562 0 2 0 syz-executor 75387 181816 4562 0 3 0x4000080 fsleep syz-executor 6419 42790 40618 0 2 0 syz-executor 6419 291342 40618 0 3 0x4000080 fsleep syz-executor 70961 365480 88867 0 2 0 syz-executor 70961 350436 88867 0 3 0x4000080 fsleep syz-executor 70961 453583 88867 0 3 0x4000080 fsleep syz-executor 79043 416601 68155 0 2 0 syz-executor 79043 287531 68155 0 3 0x4000080 fsleep syz-executor 79043 467878 68155 0 3 0x4000080 fsleep syz-executor 79043 105125 68155 0 3 0x4000080 ttyopn syz-executor 81670 203619 98113 0 2 0 syz-executor 81670 514245 98113 0 3 0x4000080 fsleep syz-executor 81670 148056 98113 0 3 0x4000080 fsleep syz-executor 81670 276015 98113 0 3 0x4000080 fsleep syz-executor 63704 405380 70032 -1 3 0x90 nanoslp syz-executor 63704 46282 70032 -1 3 0x4000090 ttyin syz-executor 63704 9281 70032 -1 3 0x4000090 kqread syz-executor 63704 384550 70032 -1 3 0x4000090 fsleep syz-executor 17054 31590 0 0 3 0x14200 acct acct 9766 50432 1 0 3 0x100083 ttyin getty 48071 255820 0 0 3 0x14280 nfsidl nfsio 54314 496013 0 0 3 0x14280 nfsidl nfsio 94531 372063 0 0 3 0x14280 nfsidl nfsio 33690 16651 0 0 3 0x14280 nfsidl nfsio 30341 357484 0 0 3 0x14280 nfsidl nfsio 48929 122023 0 0 3 0x14280 nfsidl nfsio 39655 83095 0 0 3 0x14280 nfsidl nfsio 89484 14149 0 0 3 0x14280 nfsidl nfsio 13822 155700 0 0 3 0x14280 nfsidl nfsio 97891 259792 0 0 3 0x14280 nfsidl nfsio 50767 103301 0 0 3 0x14280 nfsidl nfsio 47436 465903 0 0 3 0x14280 nfsidl nfsio 58944 261901 0 0 3 0x14280 nfsidl nfsio 74927 432472 0 0 3 0x14280 nfsidl nfsio 24431 71310 0 0 3 0x14280 nfsidl nfsio 8166 174879 0 0 3 0x14280 nfsidl nfsio 32474 332148 0 0 3 0x14280 nfsidl nfsio 24614 133886 0 0 3 0x14280 nfsidl nfsio 59117 91613 0 0 3 0x14280 nfsidl nfsio 26177 432859 0 0 3 0x14280 nfsidl nfsio 24977 347875 18198 0 3 0x82 wait syz-executor 4562 522693 18198 0 3 0x82 nanoslp syz-executor 88867 9933 18198 0 3 0x82 nanoslp syz-executor 68155 172890 18198 0 3 0x82 nanoslp syz-executor *92667 395114 18198 0 7 0x2 syz-executor 40618 95033 18198 0 3 0x82 nanoslp syz-executor 98113 397293 18198 0 3 0x82 nanoslp syz-executor 70032 208000 18198 0 3 0x82 nanoslp syz-executor 18198 170526 90475 0 3 0x82 kqread syz-executor 90475 415675 7490 0 3 0x10008a sigsusp ksh 7490 73241 84155 0 3 0x98 kqread sshd-session 84155 421547 92998 0 3 0x92 kqread sshd-session 92998 334398 1 0 3 0x88 kqread sshd 5334 192577 62804 73 3 0x1100090 kqread syslogd 62804 97086 1 0 3 0x100082 sbwait syslogd 82443 25446 1 0 3 0x100080 kqread resolvd 49453 7071 3600 77 3 0x100092 kqread dhcpleased 18789 202920 3600 77 3 0x100092 kqread dhcpleased 3600 76969 1 0 3 0x80 kqread dhcpleased 65835 414030 0 0 3 0x14200 bored smr 61933 260930 0 0 2 0x14200 zerothread 63935 75914 0 0 3 0x14200 aiodoned aiodoned 73283 146813 0 0 3 0x14200 syncer update 48559 394249 0 0 3 0x14200 cleaner cleaner 41087 460262 0 0 3 0x14200 reaper reaper 28092 873 0 0 3 0x14200 pgdaemon pagedaemon 75049 486344 0 0 3 0x14200 bored viomb 76788 395373 0 0 3 0x40014200 acpi0 acpi0 1904 56933 0 0 3 0x14200 bored softnet0 36372 376443 0 0 3 0x14200 bored systqmp 75990 470022 0 0 3 0x14200 bored systq 69181 412480 0 0 3 0x40014200 tmoslp softclock 94546 495662 0 0 3 0x40014200 idle0 1 164704 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 11038 12173K 12822K 166960K 13448 0 pcb 18 14K 16K 166960K 194 0 rtable 214 9K 9K 166960K 463 0 pf 32 13K 17K 166960K 87 0 ifaddr 37 6K 7K 166960K 70 0 ifgroup 46 2K 2K 166960K 97 0 sysctl 4 1K 9K 166960K 12 0 counters 32 17K 18K 166960K 60 0 ioctlops 0 0K 4K 166960K 298 0 iov 0 0K 28K 166960K 56 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1433 90K 90K 166960K 2159 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 9K 166960K 18 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 29 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 835 0 sigio 0 0K 0K 166960K 15 0 proc 60 59K 108K 166960K 592 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 104 0 in_multi 84 6K 7K 166960K 161 0 ether_multi 1 0K 0K 166960K 15 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 470 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 239 151K 166K 166960K 9539 0 UVM aobj 8 6K 6K 166960K 8 0 pinsyscall 38 76K 92K 166960K 1935 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 49 0 NDP 10 0K 2K 166960K 47 0 temp 77 8680K 8776K 166960K 41005 0 kqueue 14 22K 29K 166960K 149 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 136 138 0 49 4 0 4 4 0 8 0 unpcb 144 699 0 681 6 5 1 6 0 8 0 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 277 0 271 7 6 1 7 0 8 0 arp 96 21 0 4 1 0 1 1 0 8 0 ipq 40 6 0 6 1 1 0 1 0 8 0 ipqe 40 10 0 10 1 1 0 1 0 8 0 inpcb 328 803 0 791 11 9 2 10 0 8 0 nd6 112 35 0 14 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 23 0 23 1 1 0 1 0 8 0 pppxif 1384 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 2 0 0 1 0 1 1 0 8 0 pfsrclim 320 2 0 2 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 5 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 134 0 130 1 0 1 1 0 8 0 pfstate 384 67 0 65 1 0 1 1 0 8 0 pfrule 1360 41 0 39 2 1 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 611 0 225 29 2 27 29 0 8 0 art_table 40 614 0 225 5 0 5 5 0 8 0 art_node 32 138 0 57 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 1 2 1 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 2872 0 1371 95 0 95 95 0 8 0 ffsino 256 2872 0 1371 95 0 95 95 0 8 0 nchpl 144 4046 0 2349 64 0 64 64 0 8 0 rtmask 32 7 0 7 1 1 0 1 0 8 0 vnodes 216 3491 0 0 194 0 194 194 0 8 0 namei 1024 14355 0 14355 5 4 1 3 0 8 1 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 808 2 0 0 1 0 1 1 0 8 0 kstatmem 264 56 0 36 2 0 2 2 0 8 0 scsiplug 72 9 0 9 1 1 0 1 0 8 0 scxspl 216 14467 0 14467 9 8 1 8 1 8 1 plimitpl 152 215 0 197 1 0 1 1 0 8 0 sigapl 424 1132 0 1069 8 0 8 8 0 8 0 knotepl 120 34050 0 34002 34 32 2 16 0 8 0 kqueuepl 184 428 0 417 4 3 1 4 0 8 0 pipepl 304 224 0 197 8 5 3 8 0 8 0 fdescpl 448 1098 0 1069 5 1 4 5 0 8 0 filepl 120 6869 0 6643 12 4 8 12 0 8 0 lockfpl 104 244 0 239 1 0 1 1 0 8 0 lockfspl 48 116 0 111 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 47 0 31 1 0 1 1 0 8 0 ucredpl 104 784 0 772 1 0 1 1 0 8 0 zombiepl 144 1532 0 1531 1 0 1 1 0 8 0 processpl 1152 1132 0 1069 5 0 5 5 0 8 0 procpl 664 2360 0 2284 7 0 7 7 0 8 0 sosppl 176 3 0 3 1 1 0 1 0 8 0 sockpl 552 1625 0 1591 13 10 3 12 0 8 0 mcl64k 65536 101 0 101 2 2 0 1 0 8 0 mcl16k 16384 6 0 6 1 1 0 1 0 8 0 mcl8k 8192 13 0 13 2 2 0 1 0 8 0 mcl4k 4096 3409 0 3358 15 8 7 15 0 8 0 mcl2k2 2112 2 0 2 1 1 0 1 0 8 0 mcl2k 2048 848 0 847 2 1 1 2 0 8 0 mtagpl 96 19 0 8 2 1 1 1 0 8 0 mbufpl 256 13429 0 13263 16 2 14 16 0 8 0 bufpl 280 5701 0 120 399 0 399 399 0 8 0 anonpl 24 176230 0 173044 59 28 31 58 0 187 0 amapchunkpl 152 31827 0 31324 30 9 21 30 0 158 0 amappl16 200 2885 0 2851 34 31 3 15 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 418 0 417 1 0 1 1 0 8 0 amappl12 168 1455 0 1417 2 0 2 2 0 8 0 amappl11 160 80 0 80 1 1 0 1 0 8 0 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 94 0 92 1 0 1 1 0 8 0 amappl6 120 273 0 261 1 0 1 1 0 8 0 amappl5 112 70 0 62 1 0 1 1 0 8 0 amappl4 104 402 0 379 1 0 1 1 0 8 0 amappl3 96 5355 0 5259 3 0 3 3 0 8 0 amappl2 88 1210 0 1141 2 0 2 2 0 8 0 amappl1 80 11911 0 11371 13 1 12 13 0 8 0 amappl 88 8703 0 8532 5 0 5 5 0 92 0 uvmvnodes 80 113 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 128 254 0 254 2 2 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1098 0 1069 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1098 0 1069 1 0 1 1 0 8 0 vmmpekpl 168 10875 0 10840 2 0 2 2 0 8 0 vmmpepl 168 75037 0 73238 91 9 82 91 0 357 0 vmsppl 368 1097 0 1069 4 1 3 4 0 8 0 rwobjpl 40 21865 0 20886 13 0 13 13 0 8 0 pdppl 4096 2206 0 2140 101 33 68 78 0 8 2 pvpl 32 481621 0 472518 139 50 89 139 0 265 0 pmappl 216 1099 0 1069 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 71 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(ffffffff83312e78) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806b09d708,ffff80002a776f98) at vgonel+0x663 vrecycle(fffffd806b09d708,ffff80002a776f98) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a88b4f0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806b09d708,ffff80002a776f98) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806b09d708) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b09da68,fffffd806b09d708,ffff80002a88b658) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a776f98,ffffff9c,7492d879b0f0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a88b7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a88b7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7492d879b5a0, 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(ffffffff83312e78) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806b09d708,ffff80002a776f98) at vgonel+0x663 vrecycle(fffffd806b09d708,ffff80002a776f98) at vrecycle+0x7c sys/kern/vfs_subr.c:1136 ufs_inactive(ffff80002a88b4f0) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806b09d708,ffff80002a776f98) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806b09d708) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806b09da68,fffffd806b09d708,ffff80002a88b658) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a776f98,ffffff9c,7492d879b0f0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a88b7c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a88b7c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7492d879b5a0, count: -11