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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: elfutils-devel@sourceware.org
Subject: [Bug libdw/30980] offline.c:53: dwfl_offline_section_address: Assertion `mod->e_type == ET_REL' failed.
Date: Thu, 02 Nov 2023 12:17:27 +0000	[thread overview]
Message-ID: <bug-30980-10460-1pidOPpsDE@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-30980-10460@http.sourceware.org/bugzilla/>

https://sourceware.org/bugzilla/show_bug.cgi?id=30980

--- Comment #6 from Mark Wielaard <mark at klomp dot org> ---
Thanks, that seems to be the correct thing to do here.

Note that there are a couple more asserts on this code path. In particular in
__libdwfl_find_elf_build_id there is what apparently is the root of the
confusion here:

  // MOD->E_TYPE is zero here.
  assert (ehdr->e_type != ET_REL || mod != NULL);

Which passes because mod != NULL. But probably should have been a red flag.
This is my fault, I refactored this code and kept these asserts without fully
understanding why there were (not) needed.

We should go over all asserts in the library code and rewrite/remove them. It
is never a good thing to trigger an abort in library code.

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  parent reply	other threads:[~2023-11-02 12:17 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-18 13:44 [Bug libdw/30980] New: " cebtenzzre at gmail dot com
2023-10-18 13:57 ` [Bug libdw/30980] " mark at klomp dot org
2023-10-18 14:01 ` mark at klomp dot org
2023-10-18 14:19 ` mark at klomp dot org
2023-10-18 14:26 ` mark at klomp dot org
2023-10-25  3:21 ` sam at gentoo dot org
2023-11-01 23:36 ` amerey at redhat dot com
2023-11-02 12:17 ` mark at klomp dot org [this message]
2023-11-02 13:44 ` amerey at redhat dot com

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