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* [PATCH v2 0/1] fix p_align on PT_LOAD segment in DSO isn't honored
@ 2021-12-09  5:57 Rongwei Wang
  2021-12-09  5:57 ` [PATCH v2 1/1] elf: align the mapping address of LOAD segments with p_align Rongwei Wang
  2021-12-09  6:36 ` [PATCH v2 0/1] fix p_align on PT_LOAD segment in DSO isn't honored Rongwei Wang
  0 siblings, 2 replies; 9+ messages in thread
From: Rongwei Wang @ 2021-12-09  5:57 UTC (permalink / raw)
  To: libc-alpha, hjl.tools, fweimer; +Cc: xuyu, gavin.dg

Hi

This patch mainly to fix a reported bug:

"p_align on PT_LOAD segment in DSO isn't honored"
https://sourceware.org/bugzilla/show_bug.cgi?id=28676

A testcase had been builded by H.J.Lu:
https://sourceware.org/bugzilla/attachment.cgi?id=13838

And in Patch 1/1, I also show a simple testcase which
modified from H.J.Lu.

And a similar bug in ELF binary was also reported:
https://bugzilla.kernel.org/show_bug.cgi?id=215275

A related fix patch could been found:
https://lore.kernel.org/linux-mm/20211009092658.59665-4-rongwei.wang@linux.alibaba.com/
Originally, we send this patch for introducing .text
hugepages, was not aware of it's bug. And now, I am
not sure whether kernel maintainer will regards it as
a bug. But it deserved try again.

Thanks.

Changelog:

RFC/v1 -> v2

- Patch "elf: align the mapping address of LOAD segments with p_align"
fix coding format and add testcase in commit.

RFC link:
https://patchwork.sourceware.org/project/glibc/patch/20211204045848.71105-2-rongwei.wang@linux.alibaba.com/

Rongwei Wang (1):
  elf: align the mapping address of LOAD segments with p_align

 elf/dl-load.c         |  1 +
 elf/dl-map-segments.h | 63 +++++++++++++++++++++++++++++++++++++++----
 include/link.h        |  3 +++
 3 files changed, 62 insertions(+), 5 deletions(-)

-- 
2.27.0


^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2021-12-10  2:34 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-12-09  5:57 [PATCH v2 0/1] fix p_align on PT_LOAD segment in DSO isn't honored Rongwei Wang
2021-12-09  5:57 ` [PATCH v2 1/1] elf: align the mapping address of LOAD segments with p_align Rongwei Wang
2021-12-09 15:14   ` H.J. Lu
2021-12-09 18:04     ` [PATCH v3] elf: Properly align PT_LOAD segments [BZ #28676] H.J. Lu
2021-12-09 19:29       ` [PATCH v4] " H.J. Lu
2021-12-10  1:58         ` Rongwei Wang
2021-12-10  2:24           ` H.J. Lu
2021-12-10  2:34             ` Rongwei Wang
2021-12-09  6:36 ` [PATCH v2 0/1] fix p_align on PT_LOAD segment in DSO isn't honored Rongwei Wang

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