panic: ufsdirhash_lookup: bad offset in hash array Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *305533 54832 0 0x8000000 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828e5d43) at panic+0x165 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80685dc960,ffff80002a64f800,1,fffffd80685dca0c,ffff80002a681210,ffff80002a681228) at ufsdirhash_lookup+0x8a8 sys/ufs/ufs/ufs_dirhash.c:342 ufs_lookup() at ufs_lookup+0xba0 sys/ufs/ufs/ufs_lookup.c:214 VOP_LOOKUP(fffffd807b84a630,ffff80002a681568,ffff80002a681598) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a681538) at vfs_lookup+0x6df sys/kern/vfs_lookup.c:566 namei(ffff80002a681538) at namei+0x56a sys/kern/vfs_lookup.c:250 dorenameat(ffff80002a63e018,4,200000c0,3,0) at dorenameat+0x7f sys/kern/vfs_syscalls.c:2954 syscall(ffff80002a681730) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded257494b0, 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: ufsdirhash_lookup: bad offset in hash array ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828e5d43) at panic+0x165 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80685dc960,ffff80002a64f800,1,fffffd80685dca0c,ffff80002a681210,ffff80002a681228) at ufsdirhash_lookup+0x8a8 sys/ufs/ufs/ufs_dirhash.c:342 ufs_lookup() at ufs_lookup+0xba0 sys/ufs/ufs/ufs_lookup.c:214 VOP_LOOKUP(fffffd807b84a630,ffff80002a681568,ffff80002a681598) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a681538) at vfs_lookup+0x6df sys/kern/vfs_lookup.c:566 namei(ffff80002a681538) at namei+0x56a sys/kern/vfs_lookup.c:250 dorenameat(ffff80002a63e018,4,200000c0,3,0) at dorenameat+0x7f sys/kern/vfs_syscalls.c:2954 syscall(ffff80002a681730) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded257494b0, count: -10 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a681030 rbx 0xffff8000006ba670 rdx 0 rcx 0 rax 0xffff80002a63e018 r8 0x101010101010101 r9 0x8080808080808080 r10 0x59aa6afb6be5fc60 r11 0x44dcbc216c905540 r12 0 r13 0xffff800000dcbe00 r14 0 r15 0x1 rip 0xffffffff8227103c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a681020 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb> show proc PROC (syz-executor.0) tid=305533 pid=54832 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=52, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a63fc48,0xffffffff82d313f8 process=0xffff80002a65c440 user=0xffff80002a67c000, vmspace=0xfffffd80074a6968 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 54832 415178 95948 0 2 0x8000000 syz-executor.0 *54832 305533 95948 0 7 0xc000000 syz-executor.0 95948 207134 10615 0 3 0x8000082 nanoslp syz-executor.0 10615 517669 51657 0 3 0x1a000082 kqread syz-execprog 10615 317814 51657 0 3 0x1e000082 thrsleep syz-execprog 10615 440199 51657 0 3 0x1e000082 thrsleep syz-execprog 10615 460974 51657 0 3 0x1e000082 thrsleep syz-execprog 10615 58342 51657 0 3 0x1e000082 thrsleep syz-execprog 10615 507262 51657 0 3 0x1e000082 wait syz-execprog 10615 138428 51657 0 3 0x1e000082 thrsleep syz-execprog 10615 32151 51657 0 3 0x1e000082 thrsleep syz-execprog 10615 262687 51657 0 3 0x1e000082 thrsleep syz-execprog 51657 51218 3455 0 3 0x810008a sigsusp ksh 3455 421525 58723 0 3 0x1800009a kqread sshd 23676 336993 1 0 3 0x18100083 ttyin getty 58723 201312 1 0 3 0x18000088 kqread sshd 31552 217350 4818 73 3 0x19100090 kqread syslogd 4818 62676 1 0 3 0x18100082 sbwait syslogd 1983 142738 1 0 3 0x18100080 kqread resolvd 71278 345301 53078 77 3 0x18100092 kqread dhcpleased 26994 468560 53078 77 3 0x18100092 kqread dhcpleased 53078 328913 1 0 3 0x18000080 kqread dhcpleased 99371 163825 0 0 3 0x14200 bored smr 79306 243909 0 0 2 0x14200 zerothread 1784 122867 0 0 3 0x14200 aiodoned aiodoned 54151 188913 0 0 3 0x14200 syncer update 10417 9276 0 0 3 0x14200 cleaner cleaner 63550 394420 0 0 3 0x14200 reaper reaper 5033 325704 0 0 3 0x14200 pgdaemon pagedaemon 37875 313836 0 0 3 0x14200 bored viomb 80400 56646 0 0 3 0x40014200 acpi0 acpi0 71327 250421 0 0 3 0x14200 bored softnet3 36206 210809 0 0 3 0x14200 bored softnet2 56514 244336 0 0 3 0x14200 bored softnet1 84605 383080 0 0 3 0x14200 bored softnet0 33416 188122 0 0 3 0x14200 bored systqmp 51189 458519 0 0 3 0x14200 bored systq 7936 315078 0 0 3 0x40014200 tmoslp softclock 70740 226130 0 0 3 0x40014200 idle0 1 368020 0 0 3 0x8000082 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 10134 6384K 6412K 166960K 11215 0 pcb 15 10K 10K 166960K 15 0 rtable 80 2K 2K 166960K 170 0 pf 15 6K 6K 166960K 18 0 ifaddr 15 6K 6K 166960K 19 0 ifgroup 22 1K 1K 166960K 27 0 counters 23 16K 16K 166960K 24 0 ioctlops 0 0K 2K 166960K 23 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1272 80K 80K 166960K 1288 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 21 3K 3K 166960K 21 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 3 8K 12K 166960K 35 0 proc 55 58K 67K 166960K 302 0 subproc 0 0K 0K 166960K 13 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 22 1K 1K 166960K 33 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 313 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 160 14K 14K 166960K 3719 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 24 48K 100K 166960K 1143 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 6 0K 0K 166960K 9 0 temp 1 6796K 6860K 166960K 3860 0 kqueue 12 18K 18K 166960K 34 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 24 0 21 1 0 1 1 0 8 0 rtentry 112 45 0 12 1 0 1 1 0 8 0 unpcb 144 45 0 32 1 0 1 1 0 8 0 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 58 0 58 1 0 1 1 0 8 1 tcpcb 808 12 0 9 1 0 1 1 0 8 0 arp 88 6 0 2 1 0 1 1 0 8 0 inpcb 360 38 0 32 1 0 1 1 0 8 0 nd6 104 6 0 3 1 0 1 1 0 8 0 kcovpl 48 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 256 192 0 48 9 0 9 9 0 8 0 art_table 32 193 0 48 2 0 2 2 0 8 0 art_node 16 44 0 14 1 0 1 1 0 8 0 dirhash 1024 20 0 0 3 0 3 3 0 8 0 dino2pl 256 1558 0 73 93 0 93 93 0 8 0 ffsino 240 1558 0 73 88 0 88 88 0 8 0 nchpl 144 1822 0 101 64 0 64 64 0 8 0 uvmvnodes 80 1580 0 0 33 0 33 33 0 8 0 vnodes 216 1580 0 0 88 0 88 88 0 8 0 namei 1024 6555 0 6554 2 0 2 2 0 8 1 kstatmem 264 10 0 2 1 0 1 1 0 8 0 scxspl 216 8117 0 8117 8 0 8 8 1 8 8 plimitpl 152 42 0 34 1 0 1 1 0 8 0 sigapl 424 383 0 352 5 0 5 5 0 8 1 futexpl 64 10 0 10 1 0 1 1 0 8 1 knotepl 120 7140 0 7104 2 0 2 2 0 8 0 kqueuepl 184 30 0 22 1 0 1 1 0 8 0 pipepl 288 154 0 147 1 0 1 1 0 8 0 fdescpl 432 367 0 352 3 0 3 3 0 8 1 filepl 120 1858 0 1791 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 25 0 16 1 0 1 1 0 8 0 ucredpl 104 93 0 83 1 0 1 1 0 8 0 zombiepl 144 352 0 352 1 0 1 1 0 8 1 processpl 1072 383 0 352 3 0 3 3 0 8 0 procpl 656 403 0 363 5 0 5 5 0 8 1 sockpl 472 107 0 85 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 16 0 16 1 0 1 1 0 8 1 mcl2k 2048 24567 0 24463 65 43 22 47 0 8 8 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 39060 0 38942 30 12 18 25 0 8 8 bufpl 280 5158 0 183 356 0 356 356 0 8 0 anonpl 24 378491 0 375015 50 0 50 50 0 188 22 amapchunkpl 152 15935 0 15591 26 0 26 26 0 158 11 amappl16 200 11327 0 11262 5 0 5 5 0 8 0 amappl15 192 48 0 47 1 0 1 1 0 8 0 amappl14 184 190 0 178 2 0 2 2 0 8 1 amappl13 176 58 0 58 1 0 1 1 0 8 1 amappl12 168 938 0 922 2 0 2 2 0 8 1 amappl11 160 75 0 64 1 0 1 1 0 8 0 amappl10 152 74 0 71 1 0 1 1 0 8 0 amappl9 144 425 0 425 1 0 1 1 0 8 1 amappl8 136 144 0 126 1 0 1 1 0 8 0 amappl7 128 83 0 80 1 0 1 1 0 8 0 amappl6 120 330 0 318 2 0 2 2 0 8 0 amappl5 112 201 0 188 1 0 1 1 0 8 0 amappl4 104 622 0 592 2 0 2 2 0 8 0 amappl3 96 3684 0 3645 2 0 2 2 0 8 0 amappl2 88 959 0 902 4 0 4 4 0 8 1 amappl1 80 13713 0 13277 23 7 16 22 0 8 5 amappl 88 3053 0 2962 4 0 4 4 0 92 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 367 0 352 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 367 0 352 1 0 1 1 0 8 0 vmmpekpl 168 11704 0 11680 2 0 2 2 0 8 0 vmmpepl 168 63044 0 61868 111 0 111 111 0 357 55 vmsppl 344 366 0 352 3 0 3 3 0 8 1 rwobjpl 24 32694 0 30336 20 0 20 20 0 8 2 pdppl 4096 740 0 704 88 40 48 60 0 8 12 pvpl 32 690804 0 683173 358 61 297 358 0 265 222 pmappl 216 366 0 352 2 0 2 2 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 387 0 95 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828e5d43) at panic+0x165 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80685dc960,ffff80002a64f800,1,fffffd80685dca0c,ffff80002a681210,ffff80002a681228) at ufsdirhash_lookup+0x8a8 sys/ufs/ufs/ufs_dirhash.c:342 ufs_lookup() at ufs_lookup+0xba0 sys/ufs/ufs/ufs_lookup.c:214 VOP_LOOKUP(fffffd807b84a630,ffff80002a681568,ffff80002a681598) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a681538) at vfs_lookup+0x6df sys/kern/vfs_lookup.c:566 namei(ffff80002a681538) at namei+0x56a sys/kern/vfs_lookup.c:250 dorenameat(ffff80002a63e018,4,200000c0,3,0) at dorenameat+0x7f sys/kern/vfs_syscalls.c:2954 syscall(ffff80002a681730) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded257494b0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828e5d43) at panic+0x165 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80685dc960,ffff80002a64f800,1,fffffd80685dca0c,ffff80002a681210,ffff80002a681228) at ufsdirhash_lookup+0x8a8 sys/ufs/ufs/ufs_dirhash.c:342 ufs_lookup() at ufs_lookup+0xba0 sys/ufs/ufs/ufs_lookup.c:214 VOP_LOOKUP(fffffd807b84a630,ffff80002a681568,ffff80002a681598) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a681538) at vfs_lookup+0x6df sys/kern/vfs_lookup.c:566 namei(ffff80002a681538) at namei+0x56a sys/kern/vfs_lookup.c:250 dorenameat(ffff80002a63e018,4,200000c0,3,0) at dorenameat+0x7f sys/kern/vfs_syscalls.c:2954 syscall(ffff80002a681730) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xded257494b0, count: -10