uvm_fault(0xffffffff8392de70, 0xffff800028df5ff8, 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 *205774 75344 0 0x2 0 0 syz-executor ffs_indirtrunc(fffffd806fa94100,ffffffffffbff7f2,134f00,ffffffffffffffff,2,ffff80002a801668) at ffs_indirtrunc+0x689 sys/ufs/ffs/ffs_inode.c:495 ffs_truncate(fffffd806fa94100,0,0,ffffffffffffffff) at ffs_truncate+0x1036 sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a8017c0) at ufs_inactive+0x1ff sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd80693a3e78,ffff80002a7822a8) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd80693a3e78) at vput+0xdc sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806074da38,fffffd80693a3e78,ffff80002a801928) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a7822a8,ffffff9c,758cf0e0f3a0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a801a90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a801a90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758cf0e0f850, 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. ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff8392de70, 0xffff800028df5ff8, 0, 1) -> d ddb>