x<;BH3x<;BH3x<;BH3panic: ufsdirhash_lookup: bad offset in hash array Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 98400 18687 0 0 0x4000000 0 syz-executor.6 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827e8b95) at panic+0x161 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80642e53c8,ffffffff827c8157,2,fffffd80642e5474,ffff80002dade898,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343 ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216 VOP_LOOKUP(fffffd8075d1c128,ffff80002dadea38,ffff80002dade9d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8075d1c128,ffff8000ffff4da8) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277 unveil_start_relative(ffff8000ffff4da8,ffff80002daded78,fffffd8075d1c128) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606 namei(ffff80002daded78) at namei+0x453 sys/kern/vfs_lookup.c:237 vn_open(ffff80002daded78,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:140 doopenat(ffff8000ffff4da8,3,200001c0,0,0,ffff80002dadef50) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002dadefd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c30895d760, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: ufsdirhash_lookup: bad offset in hash array ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827e8b95) at panic+0x161 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80642e53c8,ffffffff827c8157,2,fffffd80642e5474,ffff80002dade898,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343 ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216 VOP_LOOKUP(fffffd8075d1c128,ffff80002dadea38,ffff80002dade9d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8075d1c128,ffff8000ffff4da8) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277 unveil_start_relative(ffff8000ffff4da8,ffff80002daded78,fffffd8075d1c128) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606 namei(ffff80002daded78) at namei+0x453 sys/kern/vfs_lookup.c:237 vn_open(ffff80002daded78,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:140 doopenat(ffff8000ffff4da8,3,200001c0,0,0,ffff80002dadef50) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002dadefd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c30895d760, count: -12 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002dade6c0 rbx 0 rdx 0 rcx 0 rax 0xffff8000ffff4da8 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe0cc3150f01cb76d r11 0xb16d3309b16c4778 r12 0 r13 0xffff8000006c64d0 r14 0 r15 0x1 rip 0xffffffff81a69eb8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002dade6b0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.6) pid=98400 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002e887600,0xffff800021717090 process=0xffff80002e8633c0 user=0xffff80002dada000, vmspace=0xfffffd806f9ab410 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 63070 369940 38684 0 2 0 syz-executor.0 42946 151415 19149 0 2 0 syz-executor.1 42946 473620 19149 0 3 0x4000080 fsleep syz-executor.1 27871 175765 69596 0 2 0 syz-executor.4 27871 421430 69596 0 3 0x4000080 fsleep syz-executor.4 72930 29164 21746 0 2 0 syz-executor.3 72930 307977 21746 0 3 0x4000080 fsleep syz-executor.3 72930 254906 21746 0 3 0x4000080 fsleep syz-executor.3 18687 135159 18291 0 2 0 syz-executor.6 *18687 98400 18291 0 7 0x4000000 syz-executor.6 52794 412361 13872 0 3 0x82 nanoslp syz-executor.2 21746 298076 13872 0 3 0x82 nanoslp syz-executor.3 69596 150429 13872 0 3 0x82 nanoslp syz-executor.4 18291 125325 13872 0 3 0x82 nanoslp syz-executor.6 19149 45719 13872 0 3 0x82 nanoslp syz-executor.1 38684 7903 13872 0 3 0x82 nanoslp syz-executor.0 33386 404833 13872 0 3 0x82 nanoslp syz-executor.7 88484 238923 1 0 3 0x100083 ttyin getty 13607 151709 13872 0 2 0x2 syz-executor.5 10976 25201 0 0 3 0x14280 nfsidl nfsio 59462 408476 0 0 3 0x14280 nfsidl nfsio 42711 523546 0 0 3 0x14280 nfsidl nfsio 41153 41451 0 0 3 0x14280 nfsidl nfsio 78629 415105 0 0 3 0x14280 nfsidl nfsio 64100 216854 0 0 3 0x14280 nfsidl nfsio 15556 87201 0 0 3 0x14280 nfsidl nfsio 9303 229859 0 0 3 0x14280 nfsidl nfsio 5333 434678 0 0 3 0x14280 nfsidl nfsio 13473 376808 0 0 3 0x14280 nfsidl nfsio 46070 36521 0 0 3 0x14280 nfsidl nfsio 27953 260195 0 0 3 0x14280 nfsidl nfsio 49481 101122 0 0 3 0x14280 nfsidl nfsio 80201 449338 0 0 3 0x14280 nfsidl nfsio 70459 387527 0 0 3 0x14280 nfsidl nfsio 43799 82102 0 0 3 0x14280 nfsidl nfsio 53646 388224 0 0 3 0x14280 nfsidl nfsio 7438 262057 0 0 3 0x14280 nfsidl nfsio 77516 160265 0 0 3 0x14280 nfsidl nfsio 48972 413243 0 0 3 0x14280 nfsidl nfsio 7304 299386 0 0 3 0x14200 bored sosplice 13872 490204 29567 0 3 0x82 wait syz-fuzzer 13872 555 29567 0 3 0x4000082 thrsleep syz-fuzzer 13872 68253 29567 0 3 0x4000082 thrsleep syz-fuzzer 13872 180096 29567 0 3 0x4000082 wait syz-fuzzer 13872 163387 29567 0 3 0x4000082 wait syz-fuzzer 13872 265003 29567 0 3 0x4000082 wait syz-fuzzer 13872 373097 29567 0 3 0x4000082 kqread syz-fuzzer 13872 49269 29567 0 3 0x4000082 thrsleep syz-fuzzer 13872 60049 29567 0 3 0x4000082 wait syz-fuzzer 13872 393156 29567 0 3 0x4000082 thrsleep syz-fuzzer 13872 474866 29567 0 3 0x4000082 wait syz-fuzzer 13872 485183 29567 0 3 0x4000082 wait syz-fuzzer 13872 274505 29567 0 3 0x4000082 wait syz-fuzzer 13872 356644 29567 0 3 0x4000082 thrsleep syz-fuzzer 13872 289097 29567 0 3 0x4000082 thrsleep syz-fuzzer 29567 270719 3552 0 3 0x10008a sigsusp ksh 3552 512583 44090 0 3 0x9a kqread sshd 44090 382560 1 0 3 0x88 kqread sshd 13879 134086 97077 73 3 0x1100090 kqread syslogd 97077 499748 1 0 3 0x100082 netio syslogd 50621 5389 1 0 3 0x100080 kqread resolvd 88417 442740 52272 77 3 0x100092 kqread dhcpleased 78300 92127 52272 77 3 0x100092 kqread dhcpleased 52272 30292 1 0 3 0x80 kqread dhcpleased 38375 60451 0 0 3 0x14200 bored smr 29578 330331 0 0 2 0x14200 zerothread 49672 1923 0 0 3 0x14200 aiodoned aiodoned 30636 357466 0 0 3 0x14200 syncer update 35842 427321 0 0 3 0x14200 cleaner cleaner 63758 250790 0 0 3 0x14200 reaper reaper 44889 156876 0 0 3 0x14200 pgdaemon pagedaemon 55093 194623 0 0 3 0x14200 bored viomb 93054 253937 0 0 3 0x40014200 acpi0 acpi0 93646 455343 0 0 3 0x14200 bored softnet 98091 280851 0 0 3 0x14200 bored softnet 28681 407464 0 0 3 0x14200 bored softnet 90827 194660 0 0 3 0x14200 bored softnet 66871 501851 0 0 3 0x14200 bored systqmp 62761 89958 0 0 3 0x14200 bored systq 33954 55263 0 0 2 0x40014200 softclock 26887 512524 0 0 3 0x40014200 idle0 1 293363 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 10217 6419K 6872K 78643K 26277 0 pcb 13 18K 23K 78643K 3915 0 rtable 193 15K 17K 78643K 4887 0 ifaddr 69 23K 26K 78643K 1695 0 sysctl 2 0K 2K 78643K 72 0 counters 26 17K 17K 78643K 705 0 ioctlops 0 0K 4K 78643K 2302 0 iov 0 0K 52K 78643K 3145 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1452 91K 91K 78643K 14076 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 187 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1980 0 dirhash 93 16K 21K 78643K 32643 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 77K 78643K 21052 0 sigio 0 0K 0K 78643K 363 0 proc 64 67K 99K 78643K 9419 0 subproc 104 6K 6K 78643K 1383 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1088 0 in_multi 76 5K 6K 78643K 1973 0 ether_multi 1 0K 0K 78643K 100 0 mrt 3 0K 0K 78643K 60 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 223 996K 996K 78643K 223 0 exec 0 0K 1K 78643K 5274 0 pfkey data 0 0K 0K 78643K 41 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 8 62K 64K 78643K 10 0 UVM amap 333 91K 112K 78643K 141471 0 UVM aobj 6 2K 2K 78643K 6 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 670 0 NDP 11 0K 1K 78643K 640 0 temp 124 5770K 71434K 78643K 201407 0 kqueue 12 18K 28K 78643K 1441 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 1538 0 1535 21 20 1 3 0 8 0 rtentry 112 1589 0 1508 5 1 4 4 0 8 0 unpcb 144 43249 0 43233 263 257 6 16 0 8 5 syncache 296 173 0 173 31 30 1 1 0 8 1 sackhl 24 4 0 4 4 4 0 1 0 8 0 tcpqe 32 310 0 310 22 22 0 1 0 8 0 tcpcb 776 5631 0 5627 190 188 2 15 0 8 1 arp 88 239 0 226 1 0 1 1 0 8 0 ipq 40 4 0 3 4 3 1 1 0 8 0 ipqe 40 13 0 12 4 3 1 1 0 8 0 inpcb 336 16641 0 16537 223 208 15 23 0 8 4 nd6 48 425 0 406 1 0 1 1 0 8 0 pkpcb 40 125 0 125 9 8 1 1 0 8 1 kcovpl 48 106 0 98 1 0 1 1 0 8 0 mppekey 1024 25 0 25 7 7 0 1 0 8 0 ppxss 1160 438 0 438 33 32 1 1 0 8 1 pppxif 1360 213 0 213 24 23 1 1 0 8 1 pfstscr 40 31 0 30 3 2 1 1 0 8 0 pfanchor 1280 267 0 132 18 5 13 17 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 27 0 25 1 0 1 1 0 8 0 pfstkey 128 75 0 48 3 2 1 1 0 8 0 pfstate 352 39 0 38 3 2 1 1 0 8 0 rttmr 136 13 0 13 4 4 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 6824 0 6452 65 37 28 30 0 8 0 art_table 32 6826 0 6453 5 1 4 4 0 8 0 art_node 16 1575 0 1505 1 0 1 1 0 8 0 sysvmsgpl 40 59 0 40 1 0 1 1 0 8 0 semapl 112 1976 0 1966 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 10894 0 10850 8 2 6 7 0 8 0 dino2pl 256 44782 0 43178 102 0 102 102 0 8 0 ffsino 240 44782 0 43178 98 2 96 96 0 8 0 nchpl 144 82486 0 80844 63 1 62 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 6073 0 0 124 0 124 124 0 8 0 vnodes 216 6073 0 0 338 0 338 338 0 8 0 namei 1024 319024 0 319022 17 16 1 3 0 8 0 vmpool 664 84 0 84 12 11 1 1 0 8 1 kstatmem 264 658 0 636 3 1 2 3 0 8 0 scsiplug 72 9 0 9 3 3 0 1 0 8 0 scxspl 216 373684 0 373684 70 69 1 8 0 8 1 plimitpl 152 2392 0 2377 1 0 1 1 0 8 0 sigapl 424 21296 0 21231 8 0 8 8 0 8 0 futexpl 64 220157 0 220153 10 9 1 1 0 8 0 knotepl 120 286268 0 286188 140 135 5 18 0 8 0 kqueuepl 184 3304 0 3296 47 46 1 4 0 8 0 pipepl 288 3630 0 3602 76 73 3 8 0 8 1 fdescpl 432 21136 0 21110 4 0 4 4 0 8 0 filepl 120 176639 0 176399 263 251 12 20 0 8 4 lockfpl 104 3270 0 3268 6 5 1 2 0 8 0 lockfspl 48 1111 0 1109 1 0 1 1 0 8 0 sessionpl 144 124 0 108 1 0 1 1 0 8 0 pgrppl 48 276 0 260 1 0 1 1 0 8 0 ucredpl 104 31001 0 30991 1 0 1 1 0 8 0 zombiepl 144 21233 0 21231 2 1 1 1 0 8 0 processpl 1008 21296 0 21231 11 2 9 9 0 8 0 procpl 696 56101 0 56017 41 32 9 11 0 8 0 sosppl 168 192 0 192 23 23 0 1 0 8 0 sockpl 456 61636 0 61510 1228 1202 26 54 0 8 8 mcl64k 65536 714 0 714 39 38 1 1 0 8 1 mcl16k 16384 316 0 316 50 50 0 1 0 8 0 mcl12k 12288 725 0 725 41 40 1 1 0 8 1 mcl9k 9216 240 0 240 50 49 1 1 0 8 1 mcl8k 8192 1211 0 1211 25 24 1 1 0 8 1 mcl4k 4096 2490 0 2490 20 19 1 1 0 8 1 mcl2k2 2112 144 0 144 50 49 1 1 0 8 1 mcl2k 2048 118575 0 118501 72 61 11 31 0 8 1 mtagpl 96 1387 0 1387 16 16 0 11 0 8 0 mbufpl 256 416243 0 416035 1259 1229 30 230 0 8 8 bufpl 288 169769 0 163375 458 0 458 458 0 8 0 anonpl 24 4622069 0 4605632 450 310 140 186 0 188 12 amapchunkpl 152 407517 0 406811 194 160 34 61 0 158 0 amappl16 200 68319 0 67707 276 239 37 50 0 8 0 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 510 0 496 2 1 1 2 0 8 0 amappl13 176 19 0 18 2 1 1 1 0 8 0 amappl12 168 1578 0 1575 1 0 1 1 0 8 0 amappl11 160 52 0 41 1 0 1 1 0 8 0 amappl10 152 132 0 121 2 1 1 1 0 8 0 amappl9 144 1029 0 1029 31 31 0 1 0 8 0 amappl8 136 878 0 779 4 0 4 4 0 8 0 amappl7 128 409 0 383 2 0 2 2 0 8 0 amappl6 120 705 0 687 2 1 1 2 0 8 0 amappl5 112 772 0 766 1 0 1 1 0 8 0 amappl4 104 1741 0 1708 2 1 1 2 0 8 0 amappl3 96 61444 0 61395 2 0 2 2 0 8 0 amappl2 88 22809 0 22732 3 0 3 3 0 8 0 amappl1 80 481158 0 480465 46 30 16 26 0 8 0 amappl 88 137759 0 137578 5 0 5 5 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 21220 0 21194 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21220 0 21194 1 0 1 1 0 8 0 vmmpekpl 168 153182 0 153117 4 0 4 4 0 8 0 vmmpepl 168 1995299 0 1992589 495 353 142 158 0 357 0 vmsppl 344 21219 0 21194 3 0 3 3 0 8 0 rwobjpl 24 536653 0 528841 54 5 49 49 0 8 0 pdppl 4096 42446 0 42388 1182 1118 64 70 0 8 6 pvpl 32 8971730 0 8949595 813 536 277 332 0 265 58 pmappl 216 21219 0 21194 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3730 0 2910 31 5 26 29 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(ffffffff827e8b95) at panic+0x161 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80642e53c8,ffffffff827c8157,2,fffffd80642e5474,ffff80002dade898,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343 ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216 VOP_LOOKUP(fffffd8075d1c128,ffff80002dadea38,ffff80002dade9d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8075d1c128,ffff8000ffff4da8) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277 unveil_start_relative(ffff8000ffff4da8,ffff80002daded78,fffffd8075d1c128) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606 namei(ffff80002daded78) at namei+0x453 sys/kern/vfs_lookup.c:237 vn_open(ffff80002daded78,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:140 doopenat(ffff8000ffff4da8,3,200001c0,0,0,ffff80002dadef50) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002dadefd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c30895d760, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827e8b95) at panic+0x161 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80642e53c8,ffffffff827c8157,2,fffffd80642e5474,ffff80002dade898,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343 ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216 VOP_LOOKUP(fffffd8075d1c128,ffff80002dadea38,ffff80002dade9d8) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 unveil_find_cover(fffffd8075d1c128,ffff8000ffff4da8) at unveil_find_cover+0x130 sys/kern/kern_unveil.c:277 unveil_start_relative(ffff8000ffff4da8,ffff80002daded78,fffffd8075d1c128) at unveil_start_relative+0xf6 sys/kern/kern_unveil.c:606 namei(ffff80002daded78) at namei+0x453 sys/kern/vfs_lookup.c:237 vn_open(ffff80002daded78,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:140 doopenat(ffff8000ffff4da8,3,200001c0,0,0,ffff80002dadef50) at doopenat+0x26a sys/kern/vfs_syscalls.c:1127 syscall(ffff80002dadefd0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c30895d760, count: -12