panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *389659 39655 0 0x2 0 0 getty db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833119e9) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806572de98,ffff80002a7b9c98) at vgonel+0x663 checkalias(fffffd807e96ebd8,800,ffff800000c68400) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000c68400,ffff80003c9acdb0) at ffs_vinit+0x111 sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000c68400,d4f6,ffff80003c9ace80) at ffs_vget+0x406 sys/ufs/ffs/ffs_vfsops.c:1285 ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd80094711b0,ffff80003c9ad2d0,ffff80003c9ad300) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c9ad2a0) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566 namei(ffff80003c9ad2a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 vn_open(ffff80003c9ad2a0,3,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140 doopenat(ffff80002a7b9c98,ffffff9c,bce845f32b0,2,0,ffff80003c9ad440) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138 syscall(ffff80003c9ad4f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad4f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e5f2785b2c0, count: 1 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(ffffffff833119e9) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806572de98,ffff80002a7b9c98) at vgonel+0x663 checkalias(fffffd807e96ebd8,800,ffff800000c68400) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000c68400,ffff80003c9acdb0) at ffs_vinit+0x111 sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000c68400,d4f6,ffff80003c9ace80) at ffs_vget+0x406 sys/ufs/ffs/ffs_vfsops.c:1285 ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd80094711b0,ffff80003c9ad2d0,ffff80003c9ad300) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c9ad2a0) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566 namei(ffff80003c9ad2a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 vn_open(ffff80003c9ad2a0,3,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140 doopenat(ffff80002a7b9c98,ffffff9c,bce845f32b0,2,0,ffff80003c9ad440) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138 syscall(ffff80003c9ad4f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad4f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e5f2785b2c0, count: -14 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80003c9acb90 rbx 0xfffffd806572de98 rdx 0 rcx 0 rax 0xffff80002a7b9c98 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb037a0fc248a60f5 r11 0xc16d9ff94835cfd3 r12 0 r13 0x6000 __ALIGN_SIZE+0x5000 r14 0 r15 0x1 rip 0xffffffff8235f1b5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c9acb80 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (getty) tid=389659 pid=39655 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a776a68,0xffff800030cf3268 process=0xffff80003c98db20 user=0xffff80003c9a8000, vmspace=0xfffffd806c88d468 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 97846 205772 24017 0 2 0 syz-executor 97846 31181 24017 0 3 0x4000080 fsleep syz-executor 62677 62318 4934 0 2 0 syz-executor 62677 139288 4934 0 3 0x4000080 fsleep syz-executor 65031 343813 20844 0 2 0 syz-executor 65031 345483 20844 0 3 0x4000080 fsleep syz-executor 65031 29867 20844 0 3 0x4000080 fsleep syz-executor 1787 463449 84240 0 2 0x10 syz-executor 1787 184460 84240 0 3 0x4000090 sbwait syz-executor 1787 161667 84240 0 3 0x4000090 fsleep syz-executor 51598 74849 1406 0 2 0x1 syz-executor 51598 515834 1406 0 3 0x4000080 fsleep syz-executor 51598 292746 1406 0 3 0x4000080 fsleep syz-executor 86088 361810 67820 0 2 0x1 syz-executor 86088 475763 67820 0 3 0x4000080 fsleep syz-executor 86088 315826 67820 0 3 0x4000080 fsleep syz-executor *39655 389659 1 0 7 0x2 getty 4934 466020 78350 0 3 0x82 nanoslp syz-executor 1406 146028 78350 0 2 0x3 syz-executor 20844 198836 78350 0 2 0x3 syz-executor 24017 193099 78350 0 3 0x82 nanoslp syz-executor 64873 482955 78350 0 2 0x3 syz-executor 84240 67169 78350 0 2 0x3 syz-executor 42991 285247 78350 0 2 0x2 syz-executor 67820 52857 78350 0 2 0x3 syz-executor 78350 118377 21025 0 3 0x82 kqread syz-executor 21025 121398 80854 0 3 0x10008a sigsusp ksh 80854 33392 51263 0 3 0x98 kqread sshd-session 51263 493365 65366 0 3 0x92 kqread sshd-session 65366 505717 1 0 3 0x88 kqread sshd 21509 425650 48812 73 3 0x1100090 kqread syslogd 48812 323586 1 0 3 0x100082 sbwait syslogd 84689 233876 1 0 3 0x100080 kqread resolvd 46726 342815 68090 77 3 0x100092 kqread dhcpleased 52797 389568 68090 77 3 0x100092 kqread dhcpleased 68090 272356 1 0 3 0x80 kqread dhcpleased 47151 48544 0 0 3 0x14200 bored smr 90668 70135 0 0 2 0x14200 zerothread 71246 55835 0 0 3 0x14200 aiodoned aiodoned 23823 402655 0 0 3 0x14200 syncer update 86720 475518 0 0 3 0x14200 cleaner cleaner 70577 28594 0 0 3 0x14200 reaper reaper 35901 409290 0 0 3 0x14200 pgdaemon pagedaemon 37674 3143 0 0 3 0x14200 bored viomb 28395 113798 0 0 3 0x40014200 acpi0 acpi0 23737 507117 0 0 3 0x14200 bored softnet0 45231 512628 0 0 3 0x14200 bored systqmp 22875 109882 0 0 3 0x14200 bored systq 49538 205416 0 0 3 0x40014200 tmoslp softclock 75111 7603 0 0 3 0x40014200 idle0 1 487842 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 11052 12302K 12488K 166960K 12885 0 pcb 21 14K 15K 166960K 190 0 rtable 198 6K 7K 166960K 405 0 pf 31 13K 15K 166960K 73 0 ifaddr 38 6K 7K 166960K 69 0 ifgroup 50 2K 2K 166960K 105 0 sysctl 3 1K 9K 166960K 11 0 counters 33 17K 18K 166960K 55 0 ioctlops 0 0K 4K 166960K 180 0 iov 0 0K 16K 166960K 85 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1432 90K 91K 166960K 1939 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 20 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 522 0 sigio 0 0K 0K 166960K 9 0 proc 61 59K 116K 166960K 538 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 113 0 in_multi 81 6K 7K 166960K 111 0 ether_multi 2 0K 0K 166960K 4 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 429 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 231 159K 172K 166960K 6591 0 UVM aobj 18 4K 4K 166960K 18 0 pinsyscall 39 78K 94K 166960K 1613 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 33 0 NDP 11 0K 2K 166960K 45 0 temp 47 8664K 8787K 166960K 21917 0 kqueue 13 20K 30K 166960K 94 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 58 0 55 1 0 1 1 0 8 0 rtentry 136 125 0 39 4 0 4 4 0 8 0 unpcb 144 254 0 233 1 0 1 1 0 8 0 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 736 255 0 247 10 6 4 7 0 8 3 arp 96 20 0 3 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 67 0 64 1 0 1 1 0 8 0 inpcb 328 592 0 575 10 5 5 7 0 8 1 ip6q 72 8 0 5 1 0 1 1 0 8 0 ip6af 40 13 0 10 1 0 1 1 0 8 0 nd6 112 26 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 14 0 14 2 1 1 1 0 8 1 pppxif 1384 4 0 4 2 1 1 1 0 8 1 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 539 0 176 29 3 26 29 0 8 1 art_table 40 540 0 176 5 0 5 5 0 8 0 art_node 32 125 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 6 1 0 1 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 14 0 0 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2390 0 893 95 0 95 95 0 8 0 ffsino 256 2390 0 893 95 0 95 95 0 8 0 nchpl 144 3133 0 1441 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2830 0 0 158 0 158 158 0 8 0 namei 1024 10667 0 10666 4 2 2 2 0 8 1 vcpupl 3904 1 0 0 1 0 1 1 0 8 0 vmpool 808 1 0 0 1 0 1 1 0 8 0 kstatmem 264 56 0 34 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 10325 0 10325 9 1 8 8 1 8 8 plimitpl 152 219 0 203 1 0 1 1 0 8 0 sigapl 424 833 0 790 8 0 8 8 0 8 3 knotepl 120 19029 0 18982 22 12 10 15 0 8 8 kqueuepl 184 180 0 171 3 0 3 3 0 8 2 pipepl 304 152 0 124 3 0 3 3 0 8 0 fdescpl 448 800 0 770 5 1 4 5 0 8 0 filepl 120 4608 0 4378 17 2 15 15 0 8 6 lockfpl 104 280 0 274 2 0 2 2 0 8 1 lockfspl 48 132 0 127 1 0 1 1 0 8 0 sessionpl 144 25 0 18 1 0 1 1 0 8 0 pgrppl 48 44 0 28 1 0 1 1 0 8 0 ucredpl 104 849 0 837 1 0 1 1 0 8 0 zombiepl 144 996 0 995 1 0 1 1 0 8 0 processpl 1152 833 0 790 5 0 5 5 0 8 1 procpl 664 1529 0 1476 7 0 7 7 0 8 2 sosppl 176 4 0 4 2 1 1 1 0 8 1 sockpl 552 921 0 880 10 4 6 8 0 8 1 mcl64k 65536 92 0 92 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 2 1 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 10 0 10 2 1 1 1 0 8 1 mcl4k 4096 3013 0 2960 15 7 8 15 0 8 1 mcl2k 2048 752 0 746 5 3 2 4 0 8 1 mtagpl 96 21 0 4 1 0 1 1 0 8 0 mbufpl 256 8851 0 8651 19 1 18 18 0 8 4 bufpl 280 3383 0 122 233 0 233 233 0 8 0 anonpl 24 157524 0 154354 46 2 44 44 0 187 16 amapchunkpl 152 21514 0 21035 33 1 32 32 0 158 12 amappl16 200 2727 0 2690 14 2 12 12 0 8 8 amappl15 192 3 0 3 2 1 1 1 0 8 1 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 440 0 439 1 0 1 1 0 8 0 amappl12 168 1149 0 1111 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 44 0 34 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 81 0 79 1 0 1 1 0 8 0 amappl6 120 366 0 354 1 0 1 1 0 8 0 amappl5 112 83 0 75 1 0 1 1 0 8 0 amappl4 104 405 0 379 1 0 1 1 0 8 0 amappl3 96 3926 0 3821 4 0 4 4 0 8 0 amappl2 88 536 0 482 2 0 2 2 0 8 0 amappl1 80 11360 0 10821 13 0 13 13 0 8 1 amappl 88 5797 0 5636 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 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 7 0 7 1 1 0 1 0 8 0 dma128 128 254 0 254 2 1 1 1 0 8 1 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 17 0 0 1 0 1 1 0 8 0 uaddrrnd 24 799 0 770 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 799 0 770 1 0 1 1 0 8 0 vmmpekpl 168 8307 0 8273 2 0 2 2 0 8 0 vmmpepl 168 58810 0 57008 90 1 89 89 0 357 5 vmsppl 368 798 0 770 4 1 3 4 0 8 0 rwobjpl 40 18992 0 18014 12 0 12 12 0 8 0 pdppl 4096 1606 0 1541 100 33 67 80 0 8 2 pvpl 32 395344 0 386530 114 8 106 106 0 265 16 pmappl 216 799 0 770 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 397 0 64 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(ffffffff833119e9) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806572de98,ffff80002a7b9c98) at vgonel+0x663 checkalias(fffffd807e96ebd8,800,ffff800000c68400) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000c68400,ffff80003c9acdb0) at ffs_vinit+0x111 sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000c68400,d4f6,ffff80003c9ace80) at ffs_vget+0x406 sys/ufs/ffs/ffs_vfsops.c:1285 ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd80094711b0,ffff80003c9ad2d0,ffff80003c9ad300) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c9ad2a0) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566 namei(ffff80003c9ad2a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 vn_open(ffff80003c9ad2a0,3,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140 doopenat(ffff80002a7b9c98,ffffff9c,bce845f32b0,2,0,ffff80003c9ad440) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138 syscall(ffff80003c9ad4f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad4f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e5f2785b2c0, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833119e9) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806572de98,ffff80002a7b9c98) at vgonel+0x663 checkalias(fffffd807e96ebd8,800,ffff800000c68400) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000c68400,ffff80003c9acdb0) at ffs_vinit+0x111 sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000c68400,d4f6,ffff80003c9ace80) at ffs_vget+0x406 sys/ufs/ffs/ffs_vfsops.c:1285 ufs_lookup() at ufs_lookup+0x16ad sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd80094711b0,ffff80003c9ad2d0,ffff80003c9ad300) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c9ad2a0) at vfs_lookup+0x921 sys/kern/vfs_lookup.c:566 namei(ffff80003c9ad2a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 vn_open(ffff80003c9ad2a0,3,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140 doopenat(ffff80002a7b9c98,ffffff9c,bce845f32b0,2,0,ffff80003c9ad440) at doopenat+0x34d sys/kern/vfs_syscalls.c:1138 syscall(ffff80003c9ad4f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9ad4f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e5f2785b2c0, count: -14