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| author | Rongwei Wang <rongwei.wang@linux.alibaba.com> | 2021-12-10 20:39:10 +0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-12-10 11:25:37 -0800 |
| commit | 718fdd87b1b98ef88e883a37d9c18867256fa5a4 (patch) | |
| tree | a6448e52abdd289a43acd8a0d77efc645a0668f7 /elf/dl-load.c | |
| parent | 2e75604f8337fa4332977f72a8f6726309679edf (diff) | |
| download | glibc-718fdd87b1b98ef88e883a37d9c18867256fa5a4.tar.gz glibc-718fdd87b1b98ef88e883a37d9c18867256fa5a4.tar.xz glibc-718fdd87b1b98ef88e883a37d9c18867256fa5a4.zip | |
elf: Properly align PT_LOAD segments [BZ #28676]
When PT_LOAD segment alignment > the page size, allocate enough space to ensure that the segment can be properly aligned. This change helps code segments use huge pages become simple and available. This fixes [BZ #28676]. Signed-off-by: Xu Yu <xuyu@linux.alibaba.com> Signed-off-by: Rongwei Wang <rongwei.wang@linux.alibaba.com>
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index bf8957e73c..721593135e 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1,5 +1,6 @@ /* Map in a shared object's segments from the file. Copyright (C) 1995-2021 Free Software Foundation, Inc. + Copyright The GNU Toolchain Authors. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -1150,6 +1151,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, c->mapend = ALIGN_UP (ph->p_vaddr + ph->p_filesz, GLRO(dl_pagesize)); c->dataend = ph->p_vaddr + ph->p_filesz; c->allocend = ph->p_vaddr + ph->p_memsz; + c->mapalign = ph->p_align; c->mapoff = ALIGN_DOWN (ph->p_offset, GLRO(dl_pagesize)); /* Determine whether there is a gap between the last segment |