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| author | Fabiano Rosas <farosas@suse.de> | 2025-02-13 11:35:58 -0300 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2025-02-18 08:29:03 -0800 |
| commit | 4b7b20a3b72c5000ea71bef505c16e6e628268b6 (patch) | |
| tree | 01134adbde36739121af623db7c79271bf949039 /linux-user | |
| parent | 1bbcae5adaad2d8f026194002f54913be5ee0933 (diff) | |
| download | qemu-4b7b20a3b72c5000ea71bef505c16e6e628268b6.zip qemu-4b7b20a3b72c5000ea71bef505c16e6e628268b6.tar.gz qemu-4b7b20a3b72c5000ea71bef505c16e6e628268b6.tar.bz2 | |
elfload: Fix alignment when unmapping excess reservation
When complying with the alignment requested in the ELF and unmapping
the excess reservation, having align_end not aligned to the guest page
causes the unmap to be rejected by the alignment check at
target_munmap and later brk adjustments hit an EEXIST.
Fix by aligning the start of region to be unmapped.
Fixes: c81d1fafa6 ("linux-user: Honor elf alignment when placing images")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1913
Signed-off-by: Fabiano Rosas <farosas@suse.de>
[rth: Align load_end as well.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250213143558.10504-1-farosas@suse.de>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/elfload.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index a2c152e..8799e4e 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -3351,8 +3351,8 @@ static void load_elf_image(const char *image_name, const ImageSource *src, if (align_size != reserve_size) { abi_ulong align_addr = ROUND_UP(load_addr, align); - abi_ulong align_end = align_addr + reserve_size; - abi_ulong load_end = load_addr + align_size; + abi_ulong align_end = TARGET_PAGE_ALIGN(align_addr + reserve_size); + abi_ulong load_end = TARGET_PAGE_ALIGN(load_addr + align_size); if (align_addr != load_addr) { target_munmap(load_addr, align_addr - load_addr); |