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&gt; > 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&gt; > 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

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&gt; 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, &quot;crash-utility-bounces(a)redhat.com on behalf of David Wysochanski" <crash-utility-bounces(a)redhat.com on behalf of dwysocha(a)redhat.com&gt; wrote: On Wed, Apr 28, 2021 at 8:54 AM lijiang <lijiang(a)redhat.com&gt; 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&gt; > > 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&gt; > > 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? -- Crash-utility mailing list Crash-utility(a)redhat.com https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flistman... -- Crash-utility mailing list Crash-utility(a)redhat.com https://listman.redhat.com/mailman/listinfo/crash-utility