Am 23.12.2015 um 14:17 schrieb Mickaël Salaün:
> Fix a pointer cast typo introduced in v4.4-rc5 especially visible for
> the i386 subarchitecture where it results in a kernel crash.
>
> Fixes: 8090bfd2bb9a ("um: Fix fpstate handling")
> Signed-off-by: Mickaël Salaün <[email protected]>
> Cc: Jeff Dike <[email protected]>
> Cc: Richard Weinberger <[email protected]>
> Cc: Linus Torvalds <[email protected]>
> Cc: Al Viro <[email protected]>
> ---
> arch/x86/um/signal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
> index e5f854ce2d72..14fcd01ed992 100644
> --- a/arch/x86/um/signal.c
> +++ b/arch/x86/um/signal.c
> @@ -470,7 +470,7 @@ long sys_sigreturn(void)
> struct sigcontext __user *sc = &frame->sc;
> int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
>
> - if (copy_from_user(&set.sig[0], (void *)sc->oldmask,
> sizeof(set.sig[0])) ||
> + if (copy_from_user(&set.sig[0], &sc->oldmask, sizeof(set.sig[0])) ||
> copy_from_user(&set.sig[1], frame->extramask, sig_size))
> goto segfault;
FYI Linus already merged your patch. :-)
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de3793796f78e293cc0873744a75588c99ed2fdd
Thanks,
//richard
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