motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

linux-user: Clear translations on mprotect()

Browse source 
Currently it's possible to execute pages that do not have PAGE_EXEC
if there is an existing translation block. Fix by invalidating TBs
that touch the affected pages.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20220817150506.592862-2-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Ilya Leoshkevich 2022-08-17 17:05:03 +02:00 • committed by Richard Henderson
parent 872f3d046f
commit aa98e2d885
1 changed files with 4 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
linux-user/mmap.c
View file

@ -177,9 +177,11 @@ int target_mprotect(abi_ulong start, abi_ulong len, int target_prot)
goto error;
}
}
page_set_flags(start, start + len, page_flags);
mmap_unlock();
return 0;
tb_invalidate_phys_range(start, start + len);
ret = 0;
error:
mmap_unlock();
return ret;