panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 3292 24043 0 0x2 0 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83305bc2) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807e3801f0,ffff80002a2b6038) at vgonel+0x663 vrecycle(fffffd807e3801f0,ffff80002a2b6038) at vrecycle+0x7c sys/kern/vfs_subr.c:1143 ufs_inactive(ffff80003c497680) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807e3801f0,ffff80002a2b6038) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd807e3801f0) at vput+0xe5 sys/kern/vfs_subr.c:796 VOP_REMOVE(fffffd800cec31e8,fffffd807e3801f0,ffff80003c4977e8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a2b6038,ffffff9c,735a49a8d860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80003c497960) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497960) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735a49a8dd10, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: missing alias ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83305bc2) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807e3801f0,ffff80002a2b6038) at vgonel+0x663 vrecycle(fffffd807e3801f0,ffff80002a2b6038) at vrecycle+0x7c sys/kern/vfs_subr.c:1143 ufs_inactive(ffff80003c497680) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807e3801f0,ffff80002a2b6038) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd807e3801f0) at vput+0xe5 sys/kern/vfs_subr.c:796 VOP_REMOVE(fffffd800cec31e8,fffffd807e3801f0,ffff80003c4977e8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a2b6038,ffffff9c,735a49a8d860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80003c497960) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497960) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735a49a8dd10, count: -11 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4974b0 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80002a2b6038 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x9dded3ca2c4fb633 r11 0xfb703042924b3f8b r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff8182fd35 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c4974a0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=3292 pid=24043 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=0xffff8000ffff3a00,0xffff80003701efd0 process=0xffff80002a3049b8 user=0xffff80003c492000, vmspace=0xfffffd806ef631f0 estcpu=36, cpticks=64, pctcpu=0.18, user=1, sys=45, intr=17 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 41526 20163 0 0 3 0x14200 acct acct 77905 325709 31428 0 3 0x82 piperd syz-executor 95987 112475 31428 0 3 0x82 piperd syz-executor 75069 419942 0 0 3 0x14280 nfsidl nfsio 39078 272531 0 0 3 0x14280 nfsidl nfsio 54876 365444 0 0 3 0x14280 nfsidl nfsio 64731 431752 0 0 3 0x14280 nfsidl nfsio 69480 299929 0 0 3 0x14280 nfsidl nfsio 59259 158984 0 0 3 0x14280 nfsidl nfsio 44649 223297 0 0 3 0x14280 nfsidl nfsio 90314 366158 0 0 3 0x14280 nfsidl nfsio 14082 480520 0 0 3 0x14280 nfsidl nfsio 79558 314148 0 0 3 0x14280 nfsidl nfsio 68747 212643 0 0 3 0x14280 nfsidl nfsio 75748 265646 0 0 3 0x14280 nfsidl nfsio 53461 35083 0 0 3 0x14280 nfsidl nfsio 56582 423836 0 0 3 0x14280 nfsidl nfsio 649 271245 0 0 3 0x14280 nfsidl nfsio 2503 35984 0 0 3 0x14280 nfsidl nfsio 53217 163349 0 0 3 0x14280 nfsidl nfsio 9764 354301 0 0 3 0x14280 nfsidl nfsio 88624 448418 0 0 3 0x14280 nfsidl nfsio 76950 477764 0 0 3 0x14280 nfsidl nfsio 22190 72724 1 0 3 0x100083 ttyin getty *24043 3292 31428 0 7 0x2 syz-executor 63265 413715 31428 0 3 0x82 piperd syz-executor 86243 384501 31428 0 3 0x82 piperd syz-executor 38232 167020 31428 0 3 0x82 piperd syz-executor 15088 451718 31428 0 3 0x82 piperd syz-executor 13791 385264 0 0 3 0x14200 bored sosplice 31428 128428 13047 0 3 0x82 nanoslp syz-executor 13047 130703 12143 0 3 0x10008a sigsusp ksh 12143 166462 92030 0 3 0x98 kqread sshd-session 92030 2172 79127 0 3 0x92 kqread sshd-session 79127 325388 1 0 3 0x88 kqread sshd 21942 81397 58363 74 3 0x1100092 bpf pflogd 58363 92890 1 0 3 0x80 sbwait pflogd 34936 132172 89042 73 3 0x1100090 kqread syslogd 89042 509854 1 0 3 0x100082 sbwait syslogd 73368 103786 1 0 3 0x100080 kqread resolvd 94678 278391 0 0 3 0x14200 bored smr 48525 425299 0 0 3 0x14200 pgzero zerothread 29546 230887 0 0 3 0x14200 aiodoned aiodoned 68554 173884 0 0 3 0x14200 syncer update 77347 395449 0 0 3 0x14200 cleaner cleaner 58961 94407 0 0 3 0x14200 reaper reaper 68369 216877 0 0 3 0x14200 pgdaemon pagedaemon 8577 346981 0 0 3 0x14200 bored viomb 67523 390736 0 0 3 0x40014200 acpi0 acpi0 27130 374830 0 0 3 0x40014200 idle1 55657 8691 0 0 3 0x14200 bored softnet7 88680 388489 0 0 3 0x14200 bored softnet6 90641 505991 0 0 3 0x14200 bored softnet5 6805 431460 0 0 3 0x14200 bored softnet4 43504 155781 0 0 3 0x14200 bored softnet3 55614 233719 0 0 3 0x14200 bored softnet2 49671 367887 0 0 3 0x14200 bored softnet1 21243 485161 0 0 3 0x14200 bored softnet0 12294 308854 0 0 3 0x14200 bored systqmp 6375 202728 0 0 3 0x14200 bored systq 81346 151210 0 0 3 0x14200 tmoslp softclockmp 12310 431589 0 0 3 0x40014200 tmoslp softclock 2023 353960 0 0 7 0x40014200 idle0 1 30710 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 24043 (syz-executor) thread 0xffff80002a2b6038 (3292) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10262 11066K 12433K 166960K 16443 0 pcb 17 16K 31K 166960K 1907 0 rtable 210 18K 18K 166960K 2085 0 pf 46 19K 67487K 166960K 761 0 ifaddr 39 9K 12K 166960K 512 0 ifgroup 68 2K 3K 166960K 810 0 sysctl 4 1K 9K 166960K 66 0 counters 74 37K 38K 166960K 1022 0 ioctlops 0 0K 8K 166960K 3029 0 iov 0 0K 32K 166960K 624 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1523 96K 96K 166960K 7944 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 408 0 dirhash 12 2K 3K 166960K 117 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 9 29K 240K 166960K 8029 0 sigio 0 0K 0K 166960K 406 0 proc 66 83K 164K 166960K 2290 0 subproc 63 3K 4K 166960K 371 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1537 0 in_multi 55 4K 8K 166960K 827 0 ether_multi 1 0K 0K 166960K 92 0 mrt 1 0K 0K 166960K 49 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 2081 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 160 134K 193K 166960K 69212 0 UVM aobj 124 6K 6K 166960K 143 0 pinsyscall 28 56K 106K 166960K 9848 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 459 0 NDP 15 0K 2K 166960K 359 0 temp 102 8652K 74188K 166960K 392978 0 kqueue 7 12K 30K 166960K 1397 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 878 0 877 8 7 1 3 0 8 0 rtentry 176 720 0 658 5 0 5 5 0 8 0 unpcb 144 5623 0 5613 36 33 3 6 0 8 2 syncache 336 9 0 9 5 5 0 1 0 8 0 tcpcb 736 2343 0 2339 39 38 1 7 0 8 0 arp 128 79 0 68 1 0 1 1 0 8 0 inpcb 328 8941 0 8937 64 55 9 12 0 8 8 nd6 144 108 0 98 1 0 1 1 0 8 0 pkpcb 40 89 0 89 10 9 1 1 0 8 1 kcovpl 48 41 0 34 1 0 1 1 0 8 0 mppekey 1024 3 0 3 3 3 0 1 0 8 0 ppxss 1192 387 0 387 8 7 1 1 0 8 1 pppxif 1504 32 0 32 11 11 0 1 0 8 0 pfstscr 40 3 0 2 1 0 1 1 0 8 0 pffrag 232 155 0 146 2 0 2 2 0 482 0 pffrnode 88 72 0 64 1 0 1 1 0 8 0 pffrent 40 320 0 310 1 0 1 1 0 8 0 pfosfp 40 1432 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1432 0 716 21 0 21 21 0 8 0 pfrktable 1344 8 0 6 1 0 1 1 0 8 0 pfanchor 1288 5 0 0 1 0 1 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfstitem 24 483 0 378 1 0 1 1 0 8 0 pfstkey 128 492 0 387 6 0 6 6 0 8 0 pfstate 384 486 0 383 17 1 16 16 0 8 0 pfrule 1344 47 0 41 2 1 1 2 0 8 0 rttmr 136 15 0 15 8 8 0 1 0 8 0 art_heap8 4096 9 0 5 8 4 4 6 0 8 0 art_heap4 256 3394 0 3105 50 25 25 30 0 8 1 art_table 40 3403 0 3110 6 1 5 5 0 8 0 art_node 32 706 0 656 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 7 1 0 1 1 0 8 0 semupl 112 5 0 5 5 5 0 1 0 8 0 semapl 112 399 0 389 1 0 1 1 0 8 0 shmpl 112 140 0 19 4 0 4 4 0 8 0 dirhash 1024 87 0 70 3 0 3 3 0 8 0 dino2pl 256 16546 0 14973 99 0 99 99 0 8 0 ffsino 296 16546 0 14973 124 2 122 122 0 8 0 nchpl 144 27498 0 26792 67 40 27 64 0 8 0 rtmask 32 76 0 76 15 14 1 1 0 8 1 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 100063 0 100063 4 3 1 2 0 8 1 percpumem 16 526 0 474 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 562 0 524 5 2 3 3 0 8 0 acpiwqpl 32 4 0 4 1 0 1 1 1 8 1 scsiplug 72 46 0 46 14 13 1 1 0 8 1 scxspl 216 176342 0 176342 21 20 1 8 1 8 1 plimitpl 152 2168 0 2153 1 0 1 1 0 8 0 sigapl 424 8137 0 8073 9 0 9 9 0 8 0 knotepl 120 936 0 0 24 0 24 24 0 8 0 kqueuepl 224 2981 0 2975 31 29 2 9 0 8 1 pipepl 344 1055 0 1028 10 7 3 6 0 8 0 fdescpl 528 8073 0 8053 3 0 3 3 0 8 0 filepl 160 59070 0 58892 65 46 19 20 0 8 8 lockfpl 104 3717 0 3655 8 6 2 3 0 8 0 lockfspl 48 987 0 947 1 0 1 1 0 8 0 sessionpl 144 62 0 54 1 0 1 1 0 8 0 pgrppl 48 300 0 285 1 0 1 1 0 8 0 ucredpl 104 11394 0 11384 1 0 1 1 0 8 0 zombiepl 144 9523 0 9523 1 0 1 1 0 8 1 processpl 1232 8137 0 8073 6 0 6 6 0 8 0 procpl 664 20563 0 20499 9 1 8 8 0 8 0 sosppl 168 58 0 58 14 14 0 1 0 8 0 sockpl 752 15963 0 15948 123 113 10 21 0 8 8 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 109 0 0 14 1 13 14 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 105 0 0 7 0 7 7 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1342 0 0 72 0 72 72 0 8 0 bufpl 280 71396 0 65253 440 0 440 440 0 8 0 anonpl 32 20896 0 0 168 1 167 167 0 246 0 amapchunkpl 152 247785 0 247388 118 87 31 40 0 158 5 amappl16 200 26949 0 26476 128 88 40 51 0 8 0 amappl15 192 12 0 12 4 4 0 1 0 8 0 amappl14 184 273 0 264 1 0 1 1 0 8 0 amappl13 176 11 0 10 1 0 1 1 0 8 0 amappl12 168 9274 0 9254 3 1 2 3 0 8 0 amappl11 160 54 0 46 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 21 0 17 1 0 1 1 0 8 0 amappl7 128 190 0 180 1 0 1 1 0 8 0 amappl6 120 521 0 517 1 0 1 1 0 8 0 amappl5 112 258 0 250 1 0 1 1 0 8 0 amappl4 104 364 0 343 1 0 1 1 0 8 0 amappl3 96 51923 0 51869 4 0 4 4 0 8 0 amappl2 88 1255 0 1207 2 0 2 2 0 8 0 amappl1 80 43370 0 42899 15 2 13 15 0 8 0 amappl 88 66753 0 66648 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 5 0 5 3 3 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 2 0 2 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 dma512 512 3 0 3 2 2 0 1 0 8 0 dma256 256 11 0 11 6 6 0 1 0 8 0 dma128 128 271 0 271 13 12 1 1 0 8 1 dma64 64 11 0 11 4 4 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 142 0 19 3 0 3 3 0 8 0 uaddrrnd 24 8073 0 8053 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8073 0 8053 1 0 1 1 0 8 0 vmmpekpl 168 52321 0 52260 4 0 4 4 0 8 0 vmmpepl 168 512640 0 510921 187 78 109 122 0 357 0 vmsppl 488 8072 0 8053 6 2 4 5 0 8 0 rwobjpl 80 127228 0 120019 167 11 156 159 0 8 0 pdppl 4096 16154 0 16106 150 82 68 88 0 8 20 pvpl 32 27900 0 0 223 1 222 222 0 265 0 pmappl 256 8072 0 8053 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 480 0 177 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378aff0) 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+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffffffff8378aff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{0}> trace x86_ipi_db(ffffffff8378aff0) 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+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffffffff8378aff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83305bc2) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807e3801f0,ffff80002a2b6038) at vgonel+0x663 vrecycle(fffffd807e3801f0,ffff80002a2b6038) at vrecycle+0x7c sys/kern/vfs_subr.c:1143 ufs_inactive(ffff80003c497680) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807e3801f0,ffff80002a2b6038) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd807e3801f0) at vput+0xe5 sys/kern/vfs_subr.c:796 VOP_REMOVE(fffffd800cec31e8,fffffd807e3801f0,ffff80003c4977e8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a2b6038,ffffff9c,735a49a8d860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80003c497960) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497960) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735a49a8dd10, count: 4 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83305bc2) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807e3801f0,ffff80002a2b6038) at vgonel+0x663 vrecycle(fffffd807e3801f0,ffff80002a2b6038) at vrecycle+0x7c sys/kern/vfs_subr.c:1143 ufs_inactive(ffff80003c497680) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807e3801f0,ffff80002a2b6038) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd807e3801f0) at vput+0xe5 sys/kern/vfs_subr.c:796 VOP_REMOVE(fffffd800cec31e8,fffffd807e3801f0,ffff80003c4977e8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a2b6038,ffffff9c,735a49a8d860,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80003c497960) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c497960) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735a49a8dd10, count: -11