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Bug#886556: linux-image-4.15.0-rc5-amd64: NULL pointer dereference in ecc_gen_privkey [ecdh_generic] at boot

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  Bug#886556: linux-image-4.15.0-rc5-amd64: NULL pointer dereference in ecc_gen_privkey [ecdh_generic] at boot Salvatore Bonaccorso <carnil@debian.org> - 2018-02-02 20:50 +0100

#60122 — Bug#886556: linux-image-4.15.0-rc5-amd64: NULL pointer dereference in ecc_gen_privkey [ecdh_generic] at boot

Control: tags -1 + confirmed pending fixed-upstream

Hi

On Sun, Jan 07, 2018 at 06:23:40PM +0200, Mihai Basa wrote:
> Package: src:linux
> Version: 4.15~rc5-1~exp1
> Severity: important
> Tags: patch
> 
> On boot, a NULL pointer dereference is encountered in ecc_gen_privkey in
> the ecdh_generic module, on a Lenovo T430.
> The system blocks for about 2 minutes with the attached error screens,
> after which boot continues, but with a few missing systems (ethernet and
> bluetooth, at least), and locks up completely when shutting down.
> 
> The problem is debugged and a patch provided (by someone other
> than me) at: *https://patchwork.kernel.org/patch/10054807/
> <https://patchwork.kernel.org/patch/10054807/>*
> 
> Their patch (attached) hasn't appeared in the mainline kernel yet,
> even though I it's been declared accepted since 2017-11-29.
> 
> All kernels from 4.13 up to the latest 4.15-rc5, manifest this bug on my
> laptop. Kernel version 4.12 is the latest that does not exhibit it.

The commit has landed in mainline now with
4c0e22c90510308433272d7ba281b1eb4eda8209.

Regards,
Salvatore

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