Re: [Xen-devel] [PATCH v2] x86/xen: avoid freeing static 'name' when kasprintf() fails

From: David Vrabel
Date: Thu Jan 08 2015 - 09:37:16 EST


On 05/01/15 15:27, Vitaly Kuznetsov wrote:
> In case kasprintf() fails in xen_setup_timer() we assign name to the static
> string "<timer kasprintf failed>". We, however, don't check that fact before
> issuing kfree() in xen_teardown_timer(), kernel is supposed to crash with
> 'kernel BUG at mm/slub.c:3341!'
>
> Solve the issue by making name a fixed length string inside struct
> xen_clock_event_device. 16 bytes should be enough.

Applied to stable/for-linus-3.19, thanks.

David
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/