uvm_fault(0xffffffff83a01ef0, 0xffff800024885ff8, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_indirtrunc+0x689: movq 0(%rax,%rbx,8),%rbx TID PID UID PRFLAGS PFLAGS CPU COMMAND *410022 93569 0 0x2 0 0 syz-executor ffs_indirtrunc(fffffd806968c300,fffffffffffffff4,968c0,ffffffffffffffff,0,ffff80002a876eb8) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806968c300,0,0,ffffffffffffffff) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a877010) at ufs_inactive+0x1ff sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd80630487d0,ffff80002a746a68) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd80630487d0) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd80630488a8,fffffd80630487d0,ffff80002a877178) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a746a68,ffffff9c,788350a7dd00,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a8772e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8772e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x788350a7e1b0, count: 6 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.