public inbox for elfutils@sourceware.org
 help / color / mirror / Atom feed
From: Alexander Egorenkov <egorenar-dev@posteo.net>
To: elfutils-devel@sourceware.org
Subject: Adding a new section to an ELF file aborts with Assertion `shdr != NULL'
Date: Sat, 04 Sep 2021 08:38:51 +0000	[thread overview]
Message-ID: <87tuj020ro.fsf@posteo.net> (raw)


Hi all,

i'm facing an issue with libelf when i try to add a new section to an
ELF file.

How to reproduce the issue:
1. Create a simple ELF file with libelf containing only 2 sections, NULL and
a string table
2. Close ELF file
3. Reopen the new ELF file in RW mode with libelf
4. Add new section with elf_newscn()
5. Update ELF with elf_update()
6. Assertion appears

The weird thing is that if i add only a new program segment then
everything goes well. But as soon as i add a new section, it fails.

Error message:

test: elf32_updatenull.c:214: __elf64_updatenull_wrlock: Assertion `shdr
!= NULL' failed.

Any hint what i'm doing wrong ? 

Thank you
Regards
Alex

             reply	other threads:[~2021-09-04  8:38 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-04  8:38 Alexander Egorenkov [this message]
2021-09-04  9:13 ` Alexander Egorenkov
2021-09-08 21:29 ` Mark Wielaard

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87tuj020ro.fsf@posteo.net \
    --to=egorenar-dev@posteo.net \
    --cc=elfutils-devel@sourceware.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).