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| author | Ilya Leoshkevich | 2022-08-17 17:05:03 +0200 |
|---|---|---|
| committer | Richard Henderson | 2022-09-06 09:04:25 +0200 |
| commit | aa98e2d885ca9de66ddd56d88b19b0e162cc90d7 (patch) | |
| tree | 62bfe94717671e34be3b22a6cf769830aa7b37c6 /linux-user | |
| parent | linux-user: Honor PT_GNU_STACK (diff) | |
| download | qemu-aa98e2d885ca9de66ddd56d88b19b0e162cc90d7.tar.gz qemu-aa98e2d885ca9de66ddd56d88b19b0e162cc90d7.tar.xz qemu-aa98e2d885ca9de66ddd56d88b19b0e162cc90d7.zip | |
linux-user: Clear translations on mprotect()
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>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/mmap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 048c4135af..6a828e8418 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -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; |