panic: ufsdirhash_lookup: bad offset in hash array Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *334005 27678 0 0 0x4000000 0K syz-executor.7 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828183d2) at panic+0x177 sys/kern/subr_prf.c:198 ufsdirhash_lookup(fffffd80672eacd0,ffff800021200c00,1,fffffd80672ead9c,ffff800027ba51c8,ffff800027ba51d4) 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(fffffd80648e3200,ffff800027ba5528,ffff800027ba5558) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff800027ba54f8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:566 namei(ffff800027ba54f8) at namei+0x55a sys/kern/vfs_lookup.c:250 dorenameat(ffff80002392d350,46,20000040,47,20000100) at dorenameat+0x7b sys/kern/vfs_syscalls.c:2989 syscall(ffff800027ba56f0) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff800027ba56f0) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdceb57a5930, 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.