increase saved context size for crash logs
increase saved context size for crash logs

A bug can be caused by earlier programs,
so it is useful to be able to see them.

google/syzkaller,sploving/syzkaller,xairy/syzkaller,zoulasc/syzkaller,google/syzkaller,google/syzkaller,dotweiba/syzkaller,xairy/syzkaller,xairy/syzkaller,dotweiba/syzkaller,xairy/syzkaller,dotweiba/syzkaller,sploving/syzkaller,dotweiba/syzkaller,zoulasc/syzkaller,hyz0906/syzkaller,google/syzkaller,lorenzo-stoakes/syzkaller,hyz0906/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,lorenzo-stoakes/syzkaller,google/syzkaller,xairy/syzkaller,hyz0906/syzkaller,google/syzkaller,hyz0906/syzkaller,lorenzo-stoakes/syzkaller,hyz0906/syzkaller,zoulasc/syzkaller,sploving/syzkaller,sploving/syzkaller,zoulasc/syzkaller