panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *393086 85551 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83320f49) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807cb0a6e8,ffff80003c55aa80) at vgonel+0x681 sys/kern/vfs_subr.c:1218 vrecycle(fffffd807cb0a6e8,ffff80003c55aa80) at vrecycle+0x7c sys/kern/vfs_subr.c:1144 ufs_inactive(ffff80002a40bde8) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807cb0a6e8,ffff80003c55aa80) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd807cb0a6e8) at vput+0xe5 sys/kern/vfs_subr.c:797 ufs_rename(ffff80002a40c058) at ufs_rename+0x1581 VOP_RENAME(fffffd805e522b08,fffffd806a16fa40,ffff80002a40c228,fffffd805e522b08,fffffd807cb0a6e8,ffff80002a40c178) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80003c55aa80,ffffff9c,4000000007c0,ffffff9c,400000001180) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3038 syscall(ffff80002a40c3c0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a40c3c0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x126c150550, count: 3 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(ffffffff83320f49) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807cb0a6e8,ffff80003c55aa80) at vgonel+0x681 sys/kern/vfs_subr.c:1218 vrecycle(fffffd807cb0a6e8,ffff80003c55aa80) at vrecycle+0x7c sys/kern/vfs_subr.c:1144 ufs_inactive(ffff80002a40bde8) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807cb0a6e8,ffff80003c55aa80) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd807cb0a6e8) at vput+0xe5 sys/kern/vfs_subr.c:797 ufs_rename(ffff80002a40c058) at ufs_rename+0x1581 VOP_RENAME(fffffd805e522b08,fffffd806a16fa40,ffff80002a40c228,fffffd805e522b08,fffffd807cb0a6e8,ffff80002a40c178) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80003c55aa80,ffffff9c,4000000007c0,ffffff9c,400000001180) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3038 syscall(ffff80002a40c3c0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a40c3c0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x126c150550, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a40bc20 rbx 0xffffffff83812dc7 cpu_info_full_primary+0x2dc7 rdx 0xffff80000144dc00 rcx 0xffff80003c55aa80 rax 0xffffffff83811ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x312d842de197beb6 r11 0xe7bc5562c4a18b2f r12 0xffffffff83812bc8 cpu_info_full_primary+0x2bc8 r13 0 r14 0 r15 0x1 rip 0xffffffff82bb8925 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a40bc10 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=393086 pid=85551 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c55a040,0xffff80003c5079d8 process=0xffff80003c569bb8 user=0xffff80002a407000, vmspace=0xfffffd805ed9d028 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 15518 9441 82154 0 2 0 syz-executor 15518 9923 82154 0 3 0x4000080 fsleep syz-executor 54292 9737 38909 0 2 0 syz-executor 54292 188005 38909 0 3 0x4000080 fsleep syz-executor 54292 419091 38909 0 2 0x4000000 syz-executor 32503 296048 38547 0 2 0 syz-executor 32503 152685 38547 0 2 0x4000000 syz-executor 85551 138329 40223 0 2 0 syz-executor *85551 393086 40223 0 7 0x4000000 syz-executor 62760 523387 85994 0 2 0 syz-executor 62760 337343 85994 0 3 0x4000080 fsleep syz-executor 63705 181239 11585 0 3 0 vmmaplk syz-executor 63705 271763 11585 0 2 0x4000000 syz-executor 82154 396888 32803 0 3 0x82 nanoslp syz-executor 6212 416703 32803 0 2 0x2 syz-executor 38547 498947 32803 0 3 0x82 nanoslp syz-executor 68226 155887 32803 0 2 0x2 syz-executor 2845 315233 1 0 3 0x100083 ttyin getty 77214 372424 0 0 3 0x14200 bored sosplice 11585 297434 32803 0 2 0x3 syz-executor 85994 113591 32803 0 3 0x82 nanoslp syz-executor 40223 376685 32803 0 3 0x82 nanoslp syz-executor 38909 296560 32803 0 3 0x82 nanoslp syz-executor 32803 419322 12263 0 3 0x82 kqread syz-executor 12263 482365 67701 0 3 0x10008a sigsusp ksh 67701 330853 33009 0 3 0x98 kqread sshd-session 33009 14743 80498 0 3 0x92 kqread sshd-session 80498 468002 1 0 3 0x88 kqread sshd 74844 384329 12966 74 3 0x1100092 bpf pflogd 12966 468310 1 0 3 0x80 sbwait pflogd 11977 210478 37348 73 3 0x1100090 kqread syslogd 37348 3096 1 0 3 0x100082 sbwait syslogd 59633 204021 1 0 3 0x100080 kqread resolvd 42006 139928 33368 77 3 0x100092 kqread dhcpleased 14825 382051 33368 77 3 0x100092 kqread dhcpleased 33368 16726 1 0 3 0x80 kqread dhcpleased 93080 108826 0 0 3 0x14200 bored smr 35666 364556 0 0 2 0x14200 zerothread 26381 116622 0 0 3 0x14200 aiodoned aiodoned 81840 408236 0 0 3 0x14200 syncer update 21083 260024 0 0 3 0x14200 cleaner cleaner 89945 329101 0 0 3 0x14200 reaper reaper 55661 269142 0 0 3 0x14200 pgdaemon pagedaemon 52728 99153 0 0 3 0x14200 bored viomb 71694 346412 0 0 3 0x40014200 acpi0 acpi0 4250 292129 0 0 7 0x40014200 idle1 71502 238326 0 0 3 0x14200 bored softnet3 4486 301654 0 0 3 0x14200 bored softnet2 56776 167296 0 0 3 0x14200 bored softnet1 34176 224709 0 0 3 0x14200 bored softnet0 61647 184173 0 0 3 0x14200 bored systqmp 25777 40787 0 0 3 0x14200 bored systq 78637 330128 0 0 3 0x14200 tmoslp softclockmp 70188 12955 0 0 3 0x40014200 tmoslp softclock 9871 103888 0 0 3 0x40014200 idle0 1 382945 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 54292 (syz-executor) thread 0xffff80003c5074a8 (419091) Process 85551 (syz-executor) thread 0xffff80003c55aa80 (393086) Process 63705 (syz-executor) thread 0xffff8000ffffd200 (271763) Process 6212 (syz-executor) thread 0xffff80002a391728 (416703) Process 68226 (syz-executor) thread 0xffff80002a3282c0 (155887) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11117K 11548K 166960K 14335 0 pcb 18 18K 20K 166960K 634 0 rtable 228 12K 14K 166960K 800 0 pf 41 19K 27K 166960K 212 0 ifaddr 39 7K 8K 166960K 138 0 ifgroup 55 2K 2K 166960K 240 0 sysctl 4 1K 3K 166960K 10 0 counters 64 36K 37K 166960K 214 0 ioctlops 0 0K 4K 166960K 1821 0 iov 1 2K 48K 166960K 229 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1452 91K 92K 166960K 3505 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 40K 48K 166960K 37 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 172 0 dirhash 15 2K 3K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 2242 0 sigio 0 0K 0K 166960K 86 0 proc 72 91K 140K 166960K 908 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 223 0 in_multi 88 6K 7K 166960K 210 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 807 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 221 73K 88K 166960K 22890 0 UVM aobj 140 8K 8K 166960K 145 0 pinsyscall 42 84K 106K 166960K 3434 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 89 0 NDP 12 0K 1K 166960K 93 0 temp 77 8692K 8940K 166960K 81495 0 kqueue 15 24K 32K 166960K 415 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 120 300 0 297 4 3 1 3 0 8 0 rtentry 160 209 0 116 5 0 5 5 0 8 0 unpcb 144 2076 0 2059 15 13 2 6 0 8 1 syncache 336 6 0 6 3 3 0 1 0 8 0 tcpcb 808 858 0 853 28 25 3 11 0 8 2 arp 120 32 0 13 1 0 1 1 0 8 0 inpcb 376 2713 0 2700 37 34 3 18 0 8 1 nd6 136 49 0 23 2 0 2 2 0 8 0 pkpcb 40 16 0 16 4 4 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1168 48 0 48 5 4 1 1 0 8 1 pppxif 1480 6 0 6 3 3 0 1 0 8 0 pffrag 232 23 0 19 1 0 1 1 0 482 0 pffrnode 88 20 0 16 1 0 1 1 0 8 0 pffrent 40 104 0 100 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 11 0 6 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 160 0 114 1 0 1 1 0 8 0 pfstkey 128 164 0 118 3 0 3 3 0 8 0 pfstate 376 162 0 116 8 0 8 8 0 8 1 pfrule 1344 63 0 21 5 1 4 4 0 8 0 art_heap8 4096 4 0 1 3 0 3 3 0 8 0 art_heap4 256 913 0 530 35 10 25 30 0 8 0 art_table 32 917 0 531 4 0 4 4 0 8 0 art_node 16 200 0 118 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 3 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 167 0 157 1 0 1 1 0 8 0 shmpl 112 142 0 5 4 0 4 4 0 8 0 dirhash 1024 56 0 37 3 0 3 3 0 8 0 dino2pl 256 5860 0 4350 95 0 95 95 0 8 0 ffsino 280 5860 0 4350 109 0 109 109 0 8 0 nchpl 144 9006 0 7306 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 2 0 1 0 8 0 uvmvnodes 80 5927 0 0 121 0 121 121 0 8 0 vnodes 216 5927 0 0 330 0 330 330 0 8 0 namei 1024 32143 0 32141 6 5 1 2 0 8 0 percpumem 16 121 0 75 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 2 1 0 1 1 0 8 0 kstatmem 264 136 0 112 3 1 2 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 8 0 8 6 6 0 1 0 8 0 scxspl 216 28171 0 28171 13 12 1 8 1 8 1 plimitpl 152 707 0 690 1 0 1 1 0 8 0 sigapl 424 2548 0 2498 9 2 7 9 0 8 0 futexpl 64 31136 0 31133 1 0 1 1 0 8 0 knotepl 120 597 0 0 17 0 17 17 0 8 0 kqueuepl 216 1315 0 1304 14 13 1 5 0 8 0 pipepl 328 371 0 343 6 3 3 6 0 8 0 fdescpl 504 2506 0 2475 6 1 5 6 0 8 0 filepl 152 18438 0 18213 30 17 13 19 0 8 0 lockfpl 104 838 0 833 2 1 1 2 0 8 0 lockfspl 48 295 0 291 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 68 0 51 1 0 1 1 0 8 0 ucredpl 104 3217 0 3204 1 0 1 1 0 8 0 zombiepl 144 3122 0 3122 2 1 1 1 0 8 1 processpl 1176 2548 0 2498 6 0 6 6 0 8 0 procpl 656 6212 0 6155 9 2 7 8 0 8 0 srpgc 96 12 0 12 3 3 0 1 0 8 0 sosppl 168 21 0 21 6 5 1 1 0 8 1 sockpl 688 5173 0 5141 58 53 5 19 0 8 2 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 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 37 0 0 5 0 5 5 0 8 0 mtagpl 96 330 0 0 9 0 9 9 0 8 0 mbufpl 256 1221 0 0 76 0 76 76 0 8 0 bufpl 280 7788 0 1634 440 0 440 440 0 8 0 anonpl 24 314901 0 307647 98 40 58 58 0 184 11 amapchunkpl 152 75201 0 74600 45 18 27 33 0 158 1 amappl16 200 6026 0 5899 57 41 16 16 0 8 7 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 126 0 114 1 0 1 1 0 8 0 amappl13 176 35 0 35 2 2 0 1 0 8 0 amappl12 168 3212 0 3182 3 1 2 2 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 283 0 283 1 1 0 1 0 8 0 amappl8 136 45 0 42 1 0 1 1 0 8 0 amappl7 128 117 0 104 1 0 1 1 0 8 0 amappl6 120 248 0 244 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 350 0 330 1 0 1 1 0 8 0 amappl3 96 15470 0 15365 4 0 4 4 0 8 0 amappl2 88 730 0 667 2 0 2 2 0 8 0 amappl1 80 15068 0 14495 15 2 13 14 0 8 0 amappl 88 22349 0 22185 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 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 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 144 0 5 3 0 3 3 0 8 0 uaddrrnd 24 2506 0 2475 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2506 0 2475 1 0 1 1 0 8 0 vmmpekpl 168 20880 0 20828 4 0 4 4 0 8 0 vmmpepl 168 154710 0 152760 120 25 95 96 0 357 1 vmsppl 456 2505 0 2475 6 1 5 5 0 8 0 rwobjpl 64 45886 0 38795 118 0 118 118 0 8 1 pdppl 4096 5020 0 4950 128 56 72 88 0 8 2 pvpl 32 16572 0 0 134 1 133 133 0 265 0 pmappl 248 2505 0 2475 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 423 0 114 10 0 10 10 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(ffffffff83320f49) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd807cb0a6e8,ffff80003c55aa80) at vgonel+0x681 sys/kern/vfs_subr.c:1218 vrecycle(fffffd807cb0a6e8,ffff80003c55aa80) at vrecycle+0x7c sys/kern/vfs_subr.c:1144 ufs_inactive(ffff80002a40bde8) at ufs_inactive+0x360 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd807cb0a6e8,ffff80003c55aa80) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd807cb0a6e8) at vput+0xe5 sys/kern/vfs_subr.c:797 ufs_rename(ffff80002a40c058) at ufs_rename+0x1581 VOP_RENAME(fffffd805e522b08,fffffd806a16fa40,ffff80002a40c228,fffffd805e522b08,fffffd807cb0a6e8,ffff80002a40c178) at VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 dorenameat(ffff80003c55aa80,ffffff9c,4000000007c0,ffffff9c,400000001180) at dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3038 syscall(ffff80002a40c3c0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a40c3c0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x126c150550, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029a9bff0) 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(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5