[Crash-utility] crash does not work with last fedora kernels?
David Wysochanski
dwysocha at redhat.com
Thu Jul 29 01:12:11 UTC 2021
On Wed, Jul 28, 2021 at 4:25 PM Alexey Makhalov <amakhalov at vmware.com> wrote:
>
> Please try this and give us a feedback:
> https://github.com/lian-bo/crash-gdb10.2-devel-temp
>
I'm seeing a lot of "invalid input" displayed like the below when
using 'bt' command. Is this a known issue?
bt: invalid input: "jne"
bt: invalid input: "mov"
bt: invalid input: "movl"
bt: invalid input: "jne"
bt: invalid input: "jne"
bt: invalid input: "jne"
bt: invalid input: "rep"
bt: invalid input: "je"
bt: invalid input: "je"
bt: invalid input: "je"
bt: invalid input: "call"
bt: invalid input: "call"
bt: invalid input: "jne"
bt: invalid input: "call"
bt: invalid input: "call"
bt: invalid input: "movl"
bt: invalid input: "mov"
bt: invalid input: "jne"
bt: invalid input: "mov"
bt: invalid input: "je"
bt: invalid input: "call"
> On 7/28/21, 1:23 PM, "Alexey Makhalov" <amakhalov at 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 at redhat.com on behalf of David Wysochanski" <crash-utility-bounces at redhat.com on behalf of dwysocha at redhat.com> wrote:
>
> On Wed, Apr 28, 2021 at 8:54 AM lijiang <lijiang at redhat.com> wrote:
> >
> > 在 2021年04月26日 19:17, crash-utility-request at redhat.com 写道:
> > > Message: 3
> > > Date: Mon, 26 Apr 2021 11:27:40 +0300
> > > From: Vasily Averin <vvs at virtuozzo.com>
> > > To: crash-utility at redhat.com
> > > Subject: [Crash-utility] crash does not work with last fedora kernels?
> > > Message-ID: <8f8782a9-3da6-5d3c-c509-8b8ec8a30957 at virtuozzo.com>
> > > Content-Type: text/plain; charset=utf-8
> > >
> > > It looks like Fedora kernels uses gcc11 and generates debuginfo in DWARF 5 format.
> > >
> > > [root at localhost ~]# rpm -q crash
> > > crash-7.2.9-5.fc35.x86_64
> > > [root at 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 at 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 at 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 at 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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