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Differential D32514

rtld_malloc: more accurate handling of mmap(2) failure
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Authored by kib on Oct 15 2021, 9:37 PM.
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arichardson
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rG73dddffc3175: crt_malloc: more accurate handling of mmap(2) failure
Summary

Reset both pagepool_start and pagepool_end after a mmap(2) failure, to avoid using invalid pagepool either for allocation or munmap(2).

PR: 259076
Noted by: Denis Koreshkov <dynamic-wind@mail.ru>

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rG FreeBSD src repository
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Event Timeline

kib created this revision.Oct 15 2021, 9:37 PM
Herald added subscribers: bdragon, imp. · View Herald TranscriptOct 15 2021, 9:37 PM
kib requested review of this revision.Oct 15 2021, 9:37 PM
arichardson accepted this revision.Oct 18 2021, 8:16 PM
This revision is now accepted and ready to land.Oct 18 2021, 8:16 PM
arichardson added inline comments.Oct 18 2021, 8:17 PM
libexec/rtld-elf/rtld_malloc.c
285

Use NULL instead of zero?

Closed by commit rG73dddffc3175: crt_malloc: more accurate handling of mmap(2) failure (authored by kib). · Explain WhyOct 18 2021, 10:04 PM
This revision was automatically updated to reflect the committed changes.
kib added a commit: rG73dddffc3175: crt_malloc: more accurate handling of mmap(2) failure.

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libexec/
rtld-elf/
8 lines

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libexec/rtld-elf/rtld_malloc.c

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