panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *169101 37261 0 0x1000000 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8338275b) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003b80c598,ffff80003b80c598,61212dbeb1f1a15d) at ufs_dirbadentry VOP_LOOKUP(fffffd8009edb948,ffff80003b80c668,ffff80003b80c608) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8070c45038,ffff80003c46b230) at unveil_find_cover+0x16d sys/kern/kern_unveil.c:277 unveil_start_relative(ffff80003c46b230,ffff80003b80c9a8,fffffd8070c45038) at unveil_start_relative+0x14b sys/kern/kern_unveil.c:606 namei(ffff80003b80c9a8) at namei+0x54a sys/kern/vfs_lookup.c:222 vn_open(ffff80003b80c9a8,b913f2,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff80003c46b230,ffffff9c,200000000040,b913f1,0,ffff80003b80cb50) at doopenat+0x32e sys/kern/vfs_syscalls.c:1139 syscall(ffff80003b80cc00) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b80cc00) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x663040e70a0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: bad dir ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8338275b) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003b80c598,ffff80003b80c598,61212dbeb1f1a15d) at ufs_dirbadentry VOP_LOOKUP(fffffd8009edb948,ffff80003b80c668,ffff80003b80c608) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8070c45038,ffff80003c46b230) at unveil_find_cover+0x16d sys/kern/kern_unveil.c:277 unveil_start_relative(ffff80003c46b230,ffff80003b80c9a8,fffffd8070c45038) at unveil_start_relative+0x14b sys/kern/kern_unveil.c:606 namei(ffff80003b80c9a8) at namei+0x54a sys/kern/vfs_lookup.c:222 vn_open(ffff80003b80c9a8,b913f2,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff80003c46b230,ffffff9c,200000000040,b913f1,0,ffff80003b80cb50) at doopenat+0x32e sys/kern/vfs_syscalls.c:1139 syscall(ffff80003b80cc00) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b80cc00) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x663040e70a0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003b80c3c0 rbx 0xffffffff837ebdcf cpu_info_full_primary+0x2dcf rdx 0xffff800001457480 rcx 0xffff80003c46b230 rax 0xffffffff837eaff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4fe623589a351eb4 r11 0x65fc0e980093f640 r12 0xffffffff837ebbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82428565 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003b80c3b0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=169101 pid=37261 tcnt=2 stat=onproc flags process=1000000 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c46a040,0xffffffff839716b0 process=0xffff80003c420020 user=0xffff80003b807000, vmspace=0xfffffd805f03cd48 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37261 139955 44233 0 3 0x1000080 fsleep syz-executor *37261 169101 44233 0 7 0x5000000 syz-executor 3722 347171 68507 0 3 0x80 fsleep syz-executor 3722 248446 68507 0 3 0x4000080 kqread syz-executor 92960 398109 78184 0 3 0x80 fsleep syz-executor 92960 51949 78184 0 3 0x4000080 bell syz-executor 52788 240246 60316 0 3 0x80 fsleep syz-executor 52788 289545 60316 0 3 0x4000080 ttyin syz-executor 25713 153984 51687 0 3 0x80 fsleep syz-executor 25713 315880 51687 0 3 0x4000080 sbwait syz-executor 53694 24216 25314 0 3 0x80 fsleep syz-executor 53694 21057 25314 0 3 0x4000080 kqsel syz-executor 20421 94076 25386 0 3 0x80 fsleep syz-executor 20421 191831 25386 0 3 0x4000080 kqpoll syz-executor 20421 444356 25386 0 3 0x4000080 fsleep syz-executor 52231 518451 2123 0 3 0x82 nanoslp syz-executor 25386 338473 2123 0 3 0x82 nanoslp syz-executor 1132 445618 0 0 3 0x14280 nfsidl nfsio 77538 387835 0 0 3 0x14280 nfsidl nfsio 30061 394979 0 0 3 0x14280 nfsidl nfsio 79754 469898 0 0 3 0x14280 nfsidl nfsio 54206 418877 0 0 3 0x14280 nfsidl nfsio 88287 137994 0 0 3 0x14280 nfsidl nfsio 94809 259320 0 0 3 0x14280 nfsidl nfsio 74303 175612 0 0 3 0x14280 nfsidl nfsio 31633 357969 0 0 3 0x14280 nfsidl nfsio 43895 486627 0 0 3 0x14280 nfsidl nfsio 84809 260930 0 0 3 0x14280 nfsidl nfsio 66272 188735 0 0 3 0x14280 nfsidl nfsio 69115 412272 0 0 3 0x14280 nfsidl nfsio 6342 359930 0 0 3 0x14280 nfsidl nfsio 49788 330480 0 0 3 0x14280 nfsidl nfsio 16372 458050 0 0 3 0x14280 nfsidl nfsio 90238 432560 0 0 3 0x14280 nfsidl nfsio 73607 168906 0 0 3 0x14280 nfsidl nfsio 67325 461630 0 0 3 0x14280 nfsidl nfsio 73276 130130 0 0 3 0x14280 nfsidl nfsio 78184 182230 2123 0 3 0x82 nanoslp syz-executor 76492 388955 0 0 3 0x14200 bored sosplice 51687 106409 2123 0 3 0x82 nanoslp syz-executor 60316 107130 2123 0 3 0x82 nanoslp syz-executor 68507 326448 2123 0 3 0x82 nanoslp syz-executor 44233 70661 2123 0 3 0x82 nanoslp syz-executor 25314 220025 2123 0 3 0x82 nanoslp syz-executor 2123 400578 3389 0 3 0x82 kqread syz-executor 3389 93944 76513 0 3 0x10008a sigsusp ksh 76513 140409 81600 0 3 0x98 kqread sshd-session 81600 189038 42765 0 3 0x92 kqread sshd-session 2393 379374 1 0 3 0x100083 ttyopn getty 42765 383517 1 0 3 0x88 kqread sshd 28603 289518 12381 74 3 0x1100092 bpf pflogd 12381 304831 1 0 3 0x80 sbwait pflogd 85053 51961 65624 73 3 0x1100090 kqread syslogd 65624 451207 1 0 3 0x100082 sbwait syslogd 37255 507142 1 0 3 0x100080 kqread resolvd 81430 187036 44408 77 3 0x100092 kqread dhcpleased 62404 277095 44408 77 3 0x100092 kqread dhcpleased 44408 521835 1 0 3 0x80 kqread dhcpleased 74861 415270 0 0 3 0x14200 bored smr 39609 386141 0 0 3 0x14200 pgzero zerothread 65666 463013 0 0 3 0x14200 aiodoned aiodoned 23152 198561 0 0 3 0x14200 syncer update 89255 393386 0 0 3 0x14200 cleaner cleaner 21072 161798 0 0 3 0x14200 reaper reaper 18770 194098 0 0 3 0x14200 pgdaemon pagedaemon 31520 465688 0 0 3 0x14200 bored viomb 25832 240619 0 0 3 0x40014200 acpi0 acpi0 4224 350290 0 0 7 0x40014200 idle1 28467 155967 0 0 3 0x14200 bored softnet3 80101 296606 0 0 3 0x14200 bored softnet2 70308 167852 0 0 3 0x14200 bored softnet1 8566 36469 0 0 3 0x14200 bored softnet0 1155 469595 0 0 3 0x14200 bored systqmp 21928 201665 0 0 3 0x14200 bored systq 33029 341645 0 0 3 0x14200 tmoslp softclockmp 11804 135213 0 0 3 0x40014200 tmoslp softclock 69955 458857 0 0 3 0x40014200 idle0 1 395198 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 37261 (syz-executor) thread 0xffff80003c46b230 (169101) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11214K 15344K 166960K 13927 0 pcb 18 16K 19K 166960K 311 0 rtable 225 11K 11K 166960K 586 0 pf 39 18K 21K 166960K 147 0 ifaddr 39 6K 8K 166960K 101 0 ifgroup 59 2K 2K 166960K 197 0 sysctl 4 1K 2K 166960K 5 0 counters 66 36K 37K 166960K 162 0 ioctlops 0 0K 4K 166960K 1661 0 iov 1 12K 26K 166960K 71 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1487 93K 94K 166960K 3011 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 125 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 1456 0 sigio 0 0K 0K 166960K 38 0 proc 73 103K 140K 166960K 726 0 subproc 72 4K 4K 166960K 101 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 352 0 in_multi 79 5K 7K 166960K 154 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 535 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 237 173K 181K 166960K 14633 0 UVM aobj 41 2K 4K 166960K 45 0 pinsyscall 43 86K 106K 166960K 2661 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 96 0 NDP 13 0K 2K 166960K 72 0 temp 81 8700K 8764K 166960K 70070 0 kqueue 14 22K 30K 166960K 258 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 135 0 132 1 0 1 1 0 8 0 rtentry 176 171 0 77 6 0 6 6 0 8 0 unpcb 144 906 0 887 6 4 2 4 0 8 0 syncache 336 7 0 7 4 3 1 1 0 8 1 tcpcb 808 336 0 330 6 5 1 4 0 8 0 arp 128 31 0 11 1 0 1 1 0 8 0 inpcb 384 1401 0 1389 29 24 5 15 0 8 3 nd6 144 38 0 15 1 0 1 1 0 8 0 pkpcb 40 22 0 22 6 5 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 25 0 25 5 4 1 1 0 8 1 pppxif 1504 5 0 5 4 3 1 1 0 8 1 pffrag 232 6 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 10 0 5 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 4 0 1 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 82 0 48 1 0 1 1 0 8 0 pfstkey 128 82 0 48 2 0 2 2 0 8 0 pfstate 384 82 0 48 5 0 5 5 0 8 0 pfrule 1344 23 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 641 0 282 32 6 26 29 0 8 1 art_table 32 645 0 282 4 0 4 4 0 8 0 art_node 16 167 0 85 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 123 0 113 1 0 1 1 0 8 0 shmpl 112 42 0 4 2 0 2 2 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 4264 0 2758 95 0 95 95 0 8 0 ffsino 288 4264 0 2758 109 0 109 109 0 8 0 nchpl 144 6345 0 5780 63 39 24 63 0 8 0 rtmask 32 5 0 5 2 2 0 1 0 8 0 uvmvnodes 80 5287 0 0 108 0 108 108 0 8 0 vnodes 216 5287 0 0 294 0 294 294 0 8 0 namei 1024 22489 0 22488 4 3 1 2 0 8 0 percpumem 16 96 0 48 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 100 0 74 6 4 2 3 0 8 0 scsiplug 72 5 0 5 4 3 1 1 0 8 1 scxspl 216 19034 0 19034 11 10 1 8 1 8 1 plimitpl 152 197 0 180 1 0 1 1 0 8 0 sigapl 424 1783 0 1712 12 3 9 9 0 8 1 futexpl 64 20582 0 20574 1 0 1 1 0 8 0 knotepl 120 628 0 0 19 0 19 19 0 8 0 kqueuepl 224 709 0 697 17 12 5 5 0 8 4 pipepl 336 309 0 281 8 5 3 8 0 8 0 fdescpl 520 1742 0 1710 3 0 3 3 0 8 0 filepl 160 11905 0 11675 34 21 13 21 0 8 0 lockfpl 104 413 0 411 1 0 1 1 0 8 0 lockfspl 48 133 0 131 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 134 0 117 1 0 1 1 0 8 0 ucredpl 104 2125 0 2112 1 0 1 1 0 8 0 zombiepl 144 2139 0 2138 2 1 1 1 0 8 0 processpl 1192 1783 0 1712 6 0 6 6 0 8 0 procpl 656 3860 0 3781 9 1 8 8 0 8 0 srpgc 96 10 0 10 4 3 1 1 0 8 1 sosppl 168 10 0 10 3 2 1 1 0 8 1 sockpl 728 2475 0 2441 32 25 7 16 0 8 3 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 1 15 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 45 0 0 2 0 2 2 0 8 0 mbufpl 256 253 0 0 14 0 14 14 0 8 0 bufpl 280 5406 0 131 377 0 377 377 0 8 0 anonpl 32 7694 0 0 62 0 62 62 0 246 0 amapchunkpl 152 48618 0 48142 46 21 25 30 0 158 5 amappl16 200 4937 0 4905 57 50 7 15 0 8 2 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 198 0 186 1 0 1 1 0 8 0 amappl13 176 23 0 23 1 1 0 1 0 8 0 amappl12 168 2475 0 2442 4 1 3 3 0 8 0 amappl11 160 54 0 39 1 0 1 1 0 8 0 amappl10 152 26 0 26 1 1 0 1 0 8 0 amappl9 144 252 0 252 1 1 0 1 0 8 0 amappl8 136 21 0 19 1 0 1 1 0 8 0 amappl7 128 167 0 154 1 0 1 1 0 8 0 amappl6 120 213 0 209 1 0 1 1 0 8 0 amappl5 112 139 0 129 1 0 1 1 0 8 0 amappl4 104 352 0 330 1 0 1 1 0 8 0 amappl3 96 10060 0 9950 7 3 4 4 0 8 0 amappl2 88 720 0 658 2 0 2 2 0 8 0 amappl1 80 14728 0 14122 19 4 15 15 0 8 1 amappl 88 13612 0 13451 5 0 5 5 0 92 0 dma4096 4096 3 0 3 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 9 0 9 3 2 1 1 0 8 1 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 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 44 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1742 0 1710 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1742 0 1710 1 0 1 1 0 8 0 vmmpekpl 168 14896 0 14855 3 0 3 3 0 8 0 vmmpepl 168 113782 0 111739 130 34 96 101 0 357 2 vmsppl 480 1741 0 1710 6 1 5 5 0 8 0 rwobjpl 72 35354 0 29102 118 4 114 114 0 8 0 pdppl 4096 3492 0 3420 118 44 74 88 0 8 2 pvpl 32 16276 0 0 132 1 131 131 0 265 0 pmappl 256 1741 0 1710 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 429 0 72 11 0 11 11 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(ffffffff8338275b) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003b80c598,ffff80003b80c598,61212dbeb1f1a15d) at ufs_dirbadentry VOP_LOOKUP(fffffd8009edb948,ffff80003b80c668,ffff80003b80c608) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8070c45038,ffff80003c46b230) at unveil_find_cover+0x16d sys/kern/kern_unveil.c:277 unveil_start_relative(ffff80003c46b230,ffff80003b80c9a8,fffffd8070c45038) at unveil_start_relative+0x14b sys/kern/kern_unveil.c:606 namei(ffff80003b80c9a8) at namei+0x54a sys/kern/vfs_lookup.c:222 vn_open(ffff80003b80c9a8,b913f2,0) at vn_open+0x1f4 sys/kern/vfs_vnops.c:107 doopenat(ffff80003c46b230,ffffff9c,200000000040,b913f1,0,ffff80003b80cb50) at doopenat+0x32e sys/kern/vfs_syscalls.c:1139 syscall(ffff80003b80cc00) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b80cc00) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x663040e70a0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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(ffff8000299edff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffff8000299edff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5