uvm_fault(0xffffffff83997a28, 0xffff800023f45ff8, 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 *266590 49093 0 0x2 0 0 syz-executor ffs_indirtrunc(fffffd806f056200,ffffffffe03ff7f3,96540,ffffffffffffffff,1,ffff80002a81ed08) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_indirtrunc(fffffd806f056200,ffffffffffbff7f2,964a0,ffffffffffffffff,2,ffff80002a81ef08) at ffs_indirtrunc+0x723 sys/ufs/ffs/ffs_inode.c:499 ffs_truncate(fffffd806f056200,0,0,ffffffffffffffff) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a81f060) at ufs_inactive+0x1ff sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd806c091060,ffff80002a789a00) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806c091060) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806c0913c0,fffffd806c091060,ffff80002a81f1c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a789a00,ffffff9c,7f2fed6745b0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a81f330) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a81f330) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f2fed674a60, 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.