panic: bad dir Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *431014 1821 0 0 0 0 dhcpleased db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259a99e) at panic+0x161 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x1749 ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x1749 sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd806ed7d498,ffff8000216193a8,ffff8000216193d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff800021619378) at vfs_lookup+0x6cc sys/kern/vfs_lookup.c:561 namei(ffff800021619378) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff800021619378,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021610fd0,ffffff9c,7f7ffffefe10,0,0,ffff800021619560) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff8000216195d0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffefe00, count: 5 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: bad dir ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259a99e) at panic+0x161 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x1749 ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x1749 sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd806ed7d498,ffff8000216193a8,ffff8000216193d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff800021619378) at vfs_lookup+0x6cc sys/kern/vfs_lookup.c:561 namei(ffff800021619378) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff800021619378,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021610fd0,ffffff9c,7f7ffffefe10,0,0,ffff800021619560) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff8000216195d0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffefe00, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800021618e40 rbx 0 rdx 0 rcx 0 rax 0xffff800021610fd0 r8 0 r9 0x8080808080808080 r10 0xd56b379f1e92d4a8 r11 0xa94efbfc9204b2d7 r12 0 r13 0xfffffd806ef18b40 r14 0 r15 0x1 rip 0xffffffff818b04b8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021618e30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhcpleased) pid=431014 stat=onproc flags process=0 proc=0 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff82a8,0xffff800021611a60 process=0xffff8000216133a0 user=0xffff800021614000, vmspace=0xfffffd807f016000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8314 327986 34331 0 2 0 syz-executor.5 8314 340203 34331 0 3 0x4000080 fsleep syz-executor.5 62504 291497 62690 0 2 0 syz-executor.1 62504 167411 62690 0 3 0x4000080 fsleep syz-executor.1 62504 114625 62690 0 3 0x4000080 fsleep syz-executor.1 79602 520470 37896 0 2 0 syz-executor.0 79602 12339 37896 0 2 0x4000000 syz-executor.0 48127 133423 69757 0 3 0x80 nanoslp syz-executor.4 48127 108573 69757 0 3 0x4000080 fsleep syz-executor.4 25703 502347 34229 0 3 0x80 nanoslp syz-executor.7 25703 241622 34229 0 3 0x4000080 fsleep syz-executor.7 34331 361151 15908 0 2 0x482 syz-executor.5 62142 172123 0 0 3 0x14280 nfsidl nfsio 65842 323227 0 0 3 0x14280 nfsidl nfsio 38056 215315 0 0 3 0x14280 nfsidl nfsio 50116 200284 0 0 3 0x14280 nfsidl nfsio 95789 181429 0 0 3 0x14280 nfsidl nfsio 39305 445166 0 0 3 0x14280 nfsidl nfsio 29094 374047 0 0 3 0x14280 nfsidl nfsio 43361 523760 0 0 3 0x14280 nfsidl nfsio 22718 429287 0 0 3 0x14280 nfsidl nfsio 97280 126381 0 0 3 0x14280 nfsidl nfsio 34641 98753 0 0 3 0x14280 nfsidl nfsio 68050 123851 0 0 3 0x14280 nfsidl nfsio 75993 68770 0 0 3 0x14280 nfsidl nfsio 33871 264051 0 0 3 0x14280 nfsidl nfsio 30698 283552 0 0 3 0x14280 nfsidl nfsio 36696 249402 0 0 3 0x14280 nfsidl nfsio 31820 520211 0 0 3 0x14280 nfsidl nfsio 56729 158434 0 0 3 0x14280 nfsidl nfsio 59597 426709 0 0 3 0x14280 nfsidl nfsio 35250 99420 0 0 3 0x14280 nfsidl nfsio 92450 393509 0 0 3 0x14200 acct acct 62690 106276 15908 0 3 0x82 nanoslp syz-executor.1 34229 419306 15908 0 3 0x82 nanoslp syz-executor.7 37896 508272 15908 0 3 0x82 nanoslp syz-executor.0 75830 3145 15908 0 2 0x482 syz-executor.2 9493 205970 15908 0 3 0x82 nanoslp syz-executor.3 77803 24123 15908 0 2 0x482 syz-executor.6 69757 304319 15908 0 3 0x82 nanoslp syz-executor.4 37966 327327 1 0 3 0x100083 ttyin getty 49213 326201 0 0 3 0x14200 bored sosplice 15908 29163 69547 0 3 0x82 thrsleep syz-fuzzer 15908 422745 69547 0 2 0x4000002 syz-fuzzer 15908 381184 69547 0 3 0x4000082 thrsleep syz-fuzzer 15908 247214 69547 0 3 0x4000082 thrsleep syz-fuzzer 15908 159905 69547 0 3 0x4000082 thrsleep syz-fuzzer 15908 83353 69547 0 3 0x4000082 thrsleep syz-fuzzer 15908 357008 69547 0 3 0x4000082 kqread syz-fuzzer 15908 352266 69547 0 3 0x4000082 thrsleep syz-fuzzer 69547 299838 38638 0 3 0x10008a sigsusp ksh 38638 454191 32329 0 3 0x9a kqread sshd 32329 44874 1 0 3 0x88 kqread sshd 3522 2987 41970 73 3 0x1100090 kqread syslogd 41970 396315 1 0 3 0x100082 netio syslogd 4234 469222 1 0 3 0x100080 kqread resolvd 20190 463400 1821 77 3 0x100092 kqread dhcpleased 56425 189984 1821 77 3 0x100092 kqread dhcpleased * 1821 431014 1 0 7 0 dhcpleased 14833 112407 0 0 3 0x14200 bored smr 33171 316093 0 0 2 0x14200 zerothread 4040 419477 0 0 3 0x14200 aiodoned aiodoned 14876 313681 0 0 3 0x14200 syncer update 63296 341024 0 0 3 0x14200 cleaner cleaner 5799 189114 0 0 3 0x14200 reaper reaper 97241 518747 0 0 3 0x14200 pgdaemon pagedaemon 47528 286269 0 0 3 0x14200 bored viomb 44538 126879 0 0 3 0x40014200 acpi0 acpi0 92011 471007 0 0 3 0x14200 bored softnet 77168 310108 0 0 3 0x14200 bored softnet 21873 188950 0 0 3 0x14200 bored softnet 9542 169035 0 0 3 0x14200 bored softnet 93877 66464 0 0 3 0x14200 bored systqmp 35767 38677 0 0 3 0x14200 bored systq 26306 10928 0 0 2 0x40014200 softclock 57398 435475 0 0 3 0x40014200 idle0 1 228550 0 0 3 0x82 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 10237 6514K 7870K 78643K 116534 0 pcb 13 20K 24K 78643K 8378 0 rtable 225 15K 16K 78643K 26052 0 ifaddr 102 27K 31K 78643K 5457 0 sysctl 3 1K 5K 78643K 70 0 counters 26 17K 17K 78643K 515 0 ioctlops 0 0K 4K 78643K 14420 0 iov 0 0K 32K 78643K 5558 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1749 109K 110K 78643K 52351 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 326 0 VM map 2 0K 0K 78643K 2 0 sem 13 28K 28K 78643K 699 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 85K 78643K 49959 0 sigio 0 0K 0K 78643K 196 0 proc 69 59K 91K 78643K 4980 0 subproc 104 6K 7K 78643K 1333 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2974 0 in_multi 85 5K 7K 78643K 3207 0 ether_multi 1 0K 0K 78643K 523 0 mrt 1 0K 0K 78643K 1033 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 295 1314K 1314K 78643K 295 0 exec 0 0K 2K 78643K 8379 0 pfkey data 0 0K 0K 78643K 18 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 968 3461K 3462K 78643K 266341 0 UVM aobj 131 6K 6K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1420 0 NDP 15 0K 2K 78643K 1144 0 temp 153 4752K 13968K 78643K 460601 0 kqueue 12 18K 28K 78643K 3313 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 10154 0 10151 113 111 2 5 0 8 1 rtentry 112 3381 0 3297 6 3 3 4 0 8 0 unpcb 136 41656 0 41643 335 334 1 9 0 8 0 syncache 296 100 0 100 29 29 0 1 0 8 0 tcpqe 32 73 0 73 3 3 0 1 0 8 0 tcpcb 736 17365 0 17361 632 631 1 30 0 8 0 arp 88 284 0 268 1 0 1 1 0 8 0 ipq 40 4 0 4 4 4 0 1 0 8 0 ipqe 40 12 0 12 4 4 0 1 0 8 0 inpcb 312 50443 0 50432 725 721 4 19 0 8 2 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 4 0 4 1 1 0 1 0 8 0 nd6 48 770 0 748 1 0 1 1 0 8 0 pkpcb 40 254 0 254 31 31 0 1 0 8 0 kcovpl 48 100 0 92 1 0 1 1 0 8 0 ppxss 1152 286 0 286 46 46 0 1 0 8 0 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pfrktable 1344 4621 0 4610 3 2 1 2 0 8 0 pftag 88 27 0 18 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 12 1 0 1 1 0 8 0 pfstate 336 7 0 6 1 0 1 1 0 8 0 pfrule 1360 2360 0 2258 10 1 9 9 0 8 0 rttmr 64 256 0 256 15 15 0 1 0 8 0 art_heap8 4096 5 0 4 3 2 1 3 0 8 0 art_heap4 256 9865 0 9465 89 61 28 31 0 8 0 art_table 32 9870 0 9469 4 0 4 4 0 8 0 art_node 16 3352 0 3279 1 0 1 1 0 8 0 sysvmsgpl 40 52 0 51 3 2 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 691 0 680 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 85471 0 83878 101 1 100 100 0 8 0 ffsino 240 85471 0 83878 95 0 95 95 0 8 0 nchpl 144 155963 0 154321 63 0 63 63 0 8 0 uvmvnodes 80 8744 0 0 179 0 179 179 0 8 0 vnodes 224 8744 0 0 515 0 515 515 0 8 0 namei 1024 602650 0 602649 11 10 1 2 0 8 0 vcpupl 1984 425 0 4 53 0 53 53 0 8 0 vmpool 528 516 0 95 32 3 29 29 0 8 0 pfiaddrpl 120 1510 0 1489 2 1 1 1 0 8 0 kstatmem 264 1008 0 978 4 1 3 3 0 8 0 scsiplug 72 39 0 39 9 9 0 1 0 8 0 scxspl 216 384309 0 384309 79 78 1 8 0 8 1 plimitpl 152 6382 0 6368 1 0 1 1 0 8 0 sigapl 424 50138 0 50071 12 4 8 8 0 8 0 futexpl 64 515364 0 515359 4 3 1 1 0 8 0 knotepl 120 521672 0 521593 195 192 3 16 0 8 0 kqueuepl 184 12611 0 12603 165 164 1 7 0 8 0 pipepl 304 8202 0 8174 229 226 3 8 0 8 0 fdescpl 432 50044 0 50018 4 0 4 4 0 8 0 filepl 120 451470 0 451232 556 546 10 19 0 8 1 lockfpl 104 27806 0 27804 64 63 1 4 0 8 0 lockfspl 48 11607 0 11605 3 2 1 2 0 8 0 sessionpl 144 123 0 107 1 0 1 1 0 8 0 pgrppl 48 439 0 423 1 0 1 1 0 8 0 ucredpl 96 138936 0 138926 1 0 1 1 0 8 0 zombiepl 144 50074 0 50071 6 5 1 1 0 8 0 processpl 1000 50138 0 50071 15 6 9 9 0 8 0 procpl 672 124985 0 124905 63 55 8 9 0 8 1 sosppl 168 248 0 248 59 59 0 1 0 8 0 sockpl 448 102676 0 102652 1788 1777 11 37 0 8 8 mcl64k 65536 1496 0 1496 87 87 0 1 0 8 0 mcl16k 16384 422 0 422 100 100 0 1 0 8 0 mcl12k 12288 2070 0 2070 116 115 1 1 0 8 1 mcl9k 9216 539 0 539 118 118 0 1 0 8 0 mcl8k 8192 3244 0 3244 93 92 1 1 0 8 1 mcl4k 4096 5246 0 5246 37 36 1 1 0 8 1 mcl2k2 2112 361 0 361 123 123 0 1 0 8 0 mcl2k 2048 161509 0 161431 93 81 12 17 0 8 0 mtagpl 96 19129 0 18312 74 53 21 31 0 8 0 mbufpl 256 779116 0 778081 8584 8515 69 866 0 8 0 bufpl 288 82336 0 73592 625 0 625 625 0 8 0 anonpl 24 8808833 0 8787455 633 501 132 155 0 188 1 amapchunkpl 152 789399 0 788432 294 254 40 51 0 158 1 amappl16 200 119876 0 119133 357 317 40 59 0 8 0 amappl15 192 11467 0 11461 2 1 1 1 0 8 0 amappl14 184 5362 0 5359 4 3 1 1 0 8 0 amappl13 176 3424 0 3422 1 0 1 1 0 8 0 amappl12 168 4036 0 4033 1 0 1 1 0 8 0 amappl11 160 11541 0 11522 3 2 1 2 0 8 0 amappl10 152 6801 0 6793 1 0 1 1 0 8 0 amappl9 144 6321 0 6318 1 0 1 1 0 8 0 amappl8 136 6261 0 6061 9 2 7 7 0 8 0 amappl7 128 3809 0 3798 1 0 1 1 0 8 0 amappl6 120 6654 0 6633 2 1 1 2 0 8 0 amappl5 112 48454 0 48437 1 0 1 1 0 8 0 amappl4 104 18763 0 18712 2 0 2 2 0 8 0 amappl3 96 148211 0 148167 2 0 2 2 0 8 0 amappl2 88 56559 0 56488 3 1 2 3 0 8 0 amappl1 80 1155841 0 1155226 37 22 15 19 0 8 0 amappl 88 262996 0 262629 10 1 9 9 0 92 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 50560 0 50113 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 50560 0 50113 3 0 3 3 0 8 0 vmmpekpl 168 281102 0 280995 5 0 5 5 0 8 0 vmmpepl 168 4744680 0 4741289 527 359 168 171 0 357 0 vmsppl 272 50559 0 50113 32 2 30 30 0 8 0 rwobjpl 24 1103117 0 1092183 78 11 67 67 0 8 0 pdppl 4096 101126 0 100647 2646 2161 485 485 0 8 6 pvpl 32 17526295 0 17506380 1065 894 171 254 0 265 0 pmappl 216 50559 0 50113 25 0 25 25 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 15758 0 14280 185 137 48 64 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259a99e) at panic+0x161 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x1749 ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x1749 sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd806ed7d498,ffff8000216193a8,ffff8000216193d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff800021619378) at vfs_lookup+0x6cc sys/kern/vfs_lookup.c:561 namei(ffff800021619378) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff800021619378,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021610fd0,ffffff9c,7f7ffffefe10,0,0,ffff800021619560) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff8000216195d0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffefe00, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8259a99e) at panic+0x161 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x1749 ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x1749 sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd806ed7d498,ffff8000216193a8,ffff8000216193d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff800021619378) at vfs_lookup+0x6cc sys/kern/vfs_lookup.c:561 namei(ffff800021619378) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff800021619378,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021610fd0,ffffff9c,7f7ffffefe10,0,0,ffff800021619560) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff8000216195d0) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffefe00, count: -10