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AuroraMiddleware/glibc

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elf: Switch to main malloc after final ld.so self-relocation Before commit ee1ada1bdb8074de6e1bdc956ab19aef7b6a7872 ("elf: Rework exception handling in the dynamic loader [BZ #25486]"), the previous order called the main calloc to allocate a shadow GOT/PLT array for auditing support. This happened before libc.so.6 ELF constructors were run, so a user malloc could run without libc.so.6 having been initialized fully. One observable effect was that environ was NULL at this point. It does not seem to be possible at present to trigger such an allocation, but it seems more robust to delay switching to main malloc after ld.so self-relocation is complete. The elf/tst-rtld-no-malloc-audit test case fails with a 2.34-era glibc that does not have this fix. Reviewed-by: DJ Delorie <dj@redhat.com>

2024-11-06 09:33:44 +00:00

#include "tst-rtld-no-malloc.c"