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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-11-22 18:02:20 -0200 |
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| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-11-24 12:16:15 -0200 |
| commit | c45d78aac47db08bc8ea7641c5330cccaecd3ddb (patch) | |
| tree | 769aca2259f4781214044cb87e1d326955bc866e /bits/in.h | |
| parent | 3ffc4cc1ad37fb36e419c9a3a72e1916d7d893d3 (diff) | |
| download | glibc-c45d78aac47db08bc8ea7641c5330cccaecd3ddb.tar.gz glibc-c45d78aac47db08bc8ea7641c5330cccaecd3ddb.tar.xz glibc-c45d78aac47db08bc8ea7641c5330cccaecd3ddb.zip | |
posix: Fix generic p{read,write}v buffer allocation (BZ#22457)
As described in BZ#22457 an interpose malloc can free an invalid pointer for fallback preadv implementation. Fortunately this is just and issue on microblaze-linux-gnu running kernels older than 3.15. This patch fixes it by calling mmap/unmap instead of posix_memalign/ free. Checked on microblaze-linux-gnu check with run-built-tests=no and by using the sysdeps/posix implementation on x86_64-linux-gnu (just for sanity test where it shown no regression). [BZ #22457] * sysdeps/posix/preadv_common.c (PREADV): Use mmap/munmap instead of posix_memalign/free. * sysdeps/posix/pwritev_common.c (PWRITEV): Likewise.
Diffstat (limited to 'bits/in.h')
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