On 8/17/22 10:05, Ilya Leoshkevich wrote:
Hi,
I noticed that when we get a SEGV due to jumping to non-readable
memory, sometimes si_addr and program counter in siginfo_t are slightly
off. I tracked this down to the assumption that translators stop before
the end of a page, while in reality they may stop right after it.
Patch 1 fixes an invalidation issue, which may prevent SEGV from
happening altogether.
Patches 2-3 fix the main issue on x86_64 and s390x. Many other
architectures have fixed-size instructions and are not affected.
Patch 4 adds tests.
Note: this series depends on [1].
Hah. I was just thinking that I should queue your patch set to tcg-next-7.2, and then
rebase my stuff off of that. It would ensure that I have your test cases in tree so that
I don't keep regressing them on you. :-)
I'll cherry pick the one patch you're depending on.
r~
