NULL pointer deref bring up interfaces

2 messages, 2 authors, 2017-08-06 · open the first message on its own page

NULL pointer deref bring up interfaces

From: Rafael Cepeda <hidden>
Date: 2017-08-06 17:29:15

Just upgraded to 4.13rc2, rebooted, and my system crashed at my
netmount init script; says RIP is NULL, I am guessing a bad func call.
I immediately thought missing firmware in kernel, my kernel builds
firmware in it, so I upgraded my firmware to latest on git.kernel and
made sure I had no warnings in dmesg about missing firmware. Still, I
receive this NULL pointer in the IP. If I disable my netmount on boot,
I can login, but can not bring up my interfaces, still get a RIP err
in kernel logs and cpu load sky-rockets...the issue still exists on
rc3.

Linux-Regression-ID: lr#084be9

I am willing to help and provide as much info as possible, thank you.

Re: NULL pointer deref bring up interfaces

From: Stephen Hemminger <stephen@networkplumber.org>
Date: 2017-08-06 20:54:40

On Sun, 6 Aug 2017 12:29:13 -0500
Rafael Cepeda [off-list ref] wrote:
Just upgraded to 4.13rc2, rebooted, and my system crashed at my
netmount init script; says RIP is NULL, I am guessing a bad func call.
I immediately thought missing firmware in kernel, my kernel builds
firmware in it, so I upgraded my firmware to latest on git.kernel and
made sure I had no warnings in dmesg about missing firmware. Still, I
receive this NULL pointer in the IP. If I disable my netmount on boot,
I can login, but can not bring up my interfaces, still get a RIP err
in kernel logs and cpu load sky-rockets...the issue still exists on
rc3.

Linux-Regression-ID: lr#084be9

I am willing to help and provide as much info as possible, thank you.
You need to post:
 1. Kernel config -- since you are building your own kernel.
 2. Hardware -- lspci output
 3. Kernel log if possible (use serial console).

Ideally, you can bisect it down to the commit that causes the problem.
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