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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/17917] gdbserver should lookup build-ids in the remote binaries
Date: Tue, 19 Oct 2021 17:30:16 +0000 [thread overview]
Message-ID: <bug-17917-4717-7dllzqT28R@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-17917-4717@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=17917
--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Simon Marchi <simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4a2f674a688df474639066922f4ce70ce97b30d2
commit 4a2f674a688df474639066922f4ce70ce97b30d2
Author: Daniel Black <daniel@mariadb.org>
Date: Mon Oct 18 17:06:47 2021 +1100
Fix PR gdb/17917 Lookup build-id in remote binaries
GDB doesn't support loading debug files using build-id from remote
target filesystems.
This is the case when gdbserver attached to a process and a gdb target
remote occurs over tcp.
With this change we make build-id lookups possible:
(gdb) show debug-file-directory
The directory where separate debug symbols are searched for is
"/usr/local/lib/debug".
(gdb) set debug-file-directory /usr/lib/debug
(gdb) show sysroot
The current system root is "target:".
(gdb) target extended-remote :46615
Remote debugging using :46615
warning: Can not parse XML target description; XML support was disabled
at compile time
Reading /usr/sbin/mariadbd from remote target...
warning: File transfers from remote targets can be slow. Use "set
sysroot" to access files locally instead.
Reading /usr/sbin/mariadbd from remote target...
Reading symbols from target:/usr/sbin/mariadbd...
Reading
/usr/lib/debug/.build-id/6e/0a874dca5a7ff831396ddc0785d939a192efe3.debug from
remote target...
Reading
/usr/lib/debug/.build-id/6e/0a874dca5a7ff831396ddc0785d939a192efe3.debug from
remote target...
Reading symbols from
target:/usr/lib/debug/.build-id/6e/0a874dca5a7ff831396ddc0785d939a192efe3.debug...
Reading /lib/x86_64-linux-gnu/libpcre2-8.so.0 from remote target...
...
Before this change, the lookups would have been (GNU gdb (GDB) Fedora
10.2-3.fc34):
(gdb) target extended-remote :46615
Remote debugging using :46615
Reading /usr/sbin/mariadbd from remote target...
warning: File transfers from remote targets can be slow. Use "set
sysroot" to access files locally instead.
Reading /usr/sbin/mariadbd from remote target...
Reading symbols from target:/usr/sbin/mariadbd...
Reading /usr/sbin/0a874dca5a7ff831396ddc0785d939a192efe3.debug from
remote target...
Reading /usr/sbin/.debug/0a874dca5a7ff831396ddc0785d939a192efe3.debug
from remote target...
Reading
/usr/lib/debug//usr/sbin/0a874dca5a7ff831396ddc0785d939a192efe3.debug from
remote target...
Reading
/usr/lib/debug/usr/sbin//0a874dca5a7ff831396ddc0785d939a192efe3.debug from
remote target...
Reading
target:/usr/lib/debug/usr/sbin//0a874dca5a7ff831396ddc0785d939a192efe3.debug
from remote target...
Missing separate debuginfo for target:/usr/sbin/mariadbd
Try: dnf --enablerepo='*debug*' install
/usr/lib/debug/.build-id/6e/0a874dca5a7ff831396ddc0785d939a192efe3.debug
(No debugging symbols found in target:/usr/sbin/mariadbd)
Observe it didn't look for
/usr/lib/debug/.build-id/6e/0a874dca5a7ff831396ddc0785d939a192efe3.debug
on the remote target (where it is) and expected them to be installed
locally.
As a minor optimization, this also changes the build-id lookup such that
if sysroot is empty, no second lookup of the same location is performed.
Change-Id: I5181696d271c325a25a0805a8defb8ab7f9b3f55
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=17917
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next prev parent reply other threads:[~2021-10-19 17:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-03 7:09 [Bug gdb/17917] New: " eseidel at google dot com
2021-08-28 3:39 ` [Bug gdb/17917] " daniel at mariadb dot org
2021-08-28 6:51 ` daniel at mariadb dot org
2021-10-19 17:30 ` cvs-commit at gcc dot gnu.org [this message]
2021-10-19 17:42 ` tromey at sourceware dot org
2021-10-20 1:08 ` daniel at mariadb dot org
2021-10-20 2:06 ` tromey at sourceware dot org
2021-10-20 4:42 ` daniel at mariadb dot org
2023-01-02 19:31 ` tromey at sourceware dot org
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