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Subject GCC 10.1.0 kernel issue
From Dylan Araps <dylan@k1ss.org>
Date Wed, 9 May 2020 01:05:09 +0100
The kernel compiled with GCC 10.1.0 may crash on boot. This doesn't
seem to affect every system. I have thus far received a single report
by an affected user.
Attached below is a patch which has been reported to fix the issue.
This fix has not yet made it into a kernel release (let alone Linus'
tree).
I recommend applying the patch if compiling a kernel with GCC 10.1.0.
An additional note will be added to the installation guide for the
benefit of new users.
Patch: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/patch/?id=f670269a42bfdd2c83a1118cc3d1b475547eac22">f670269a42bfdd2c83a1118cc3d1b475547eac22</a>
Commit: <a href="https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=f670269a42bfdd2c83a1118cc3d1b475547eac22">git.kernel.org</a>
UPDATE (May 19 2020):
Kernel versions 5.6.14 (latest stable) and 5.4.42 (latest LTS)
contain fixes for GCC 10 and no patch is needed.
UPDATE:
Another alternative is to simply disable the stack protector in your
kernel configuration. This will also fix the kernel crashing during
the boot up process.
CONFIG_STACKPROTECTOR=n
CONFIG_STACKPROTECTOR_STRONG=n
Dylan
---
Notes:
- Reported to apply cleanly to kernel version 5.6.11.
- Hop on IRC, Reddit or send me an email (dylan@k1ss.org) if you
require any assistance. I'm here to help.
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