uvm_fault(0xffffffff83a66ec0, 0xffff800029ad2004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_readdir+0x26e: movzwl 0x4(%r14),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND *507579 37219 0 0x2 0 0 syz-executor ufs_readdir(ffff80002a869530) at ufs_readdir+0x26e sys/ufs/ufs/ufs_vnops.c:1397 VOP_READDIR(fffff9806d3c5b08,ffff80002a8695b8,fffff98007ffd4e0,ffff80002a8695fc) at VOP_READDIR+0x125 sys/kern/vfs_vops.c:453 sys_getdents(ffff80002a7362a0,ffff80002a869740,ffff80002a869690) at sys_getdents+0x2dd sys/kern/vfs_syscalls.c:3132 syscall(ffff80002a869740) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a869740) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x767852979fd0, count: 10 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>