Re: [Crash-utility] crash does not work with last fedora kernels?
Please try this and give us a feedback:
https://github.com/lian-bo/crash-gdb10.2-devel-temp
On 7/28/21, 1:23 PM, "Alexey Makhalov" <amakhalov(a)vmware.com> wrote:
DWARF-5 support was added in GDB-8.0. There GDB update to version 10.2 is going
on right now. It will solve the issue of kernels built with dwarf-5 debuginfo.
Thanks,
--Alexey
On 7/28/21, 11:14 AM, "crash-utility-bounces(a)redhat.com on behalf of David
Wysochanski" <crash-utility-bounces(a)redhat.com on behalf of
dwysocha(a)redhat.com> wrote:
On Wed, Apr 28, 2021 at 8:54 AM lijiang <lijiang(a)redhat.com> wrote:
在 2021年04月26日 19:17, crash-utility-request(a)redhat.com 写道:
> Message: 3
> Date: Mon, 26 Apr 2021 11:27:40 +0300
> From: Vasily Averin <vvs(a)virtuozzo.com>
> To: crash-utility(a)redhat.com
> Subject: [Crash-utility] crash does not work with last fedora kernels?
> Message-ID: <8f8782a9-3da6-5d3c-c509-8b8ec8a30957(a)virtuozzo.com>
> Content-Type: text/plain; charset=utf-8
>
> It looks like Fedora kernels uses gcc11 and generates debuginfo in DWARF 5 format.
>
> [root@localhost ~]# rpm -q crash
> crash-7.2.9-5.fc35.x86_64
> [root@localhost ~]# uname -a
> Linux localhost.localdomain 5.11.12-300.fc34.x86_64 #1 SMP Wed Apr 7 16:31:13 UTC
2021 x86_64 x86_64 x86_64 GNU/Linux
>
>
> [root@localhost ~]# crash -1
> Dwarf Error: wrong version in compilation unit header (is 5, should be 2, 3, or 4)
[in module /usr/lib/debug/usr/lib/modules/5.11.12-300.fc34.x86_64/vmlinux]
> crash: gdb_session_init: pulling in debug data by accessing init_mm.mmap
> Dwarf Error: wrong version in compilation unit header (is 5, should be 2, 3, or 4)
[in module /usr/lib/debug/usr/lib/modules/5.11.12-300.fc34.x86_64/vmlinux]
>
> crash: /usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux: no debugging data
available
>
> [root@localhost ~]# ls -al
/usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux
> -rwxr-xr-x. 1 root root 679679112 Apr 7 20:14
/usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux
> [root@localhost ~]# rpm -qf
/usr/lib/debug/lib/modules/5.11.12-300.fc34.x86_64/vmlinux
> kernel-debuginfo-5.11.12-300.fc34.x86_64
>
> NB: last fc35 does not work too.
>
Thank you for reporting this issue, Vasily.
The DWARF-5 caused this failure. I will have a look and try to handle this issue later.
Thanks.
Lianbo
What's the status of this issue? Is this due to needing updated
embedded gdb or something else?
--
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