diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-04 11:08:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-04 11:08:32 -0700 |
| commit | f357a82048ff1e5645861475b014570e11ad1911 (patch) | |
| tree | a3ca0cf7b1638d3e8b0a1cb5815af43dd6e0c2c3 /include/linux/signal.h | |
| parent | b20c99eb668f10b855a9fd87e0a2f5db3fb3637d (diff) | |
| parent | bd1c149aa9915b9abb6d83d0f01dfd2ace0680b5 (diff) | |
Merge branch 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SMAP fixes from Ingo Molnar:
"Fixes for Intel SMAP support, to fix SIGSEGVs during bootup"
* 'x86-smap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Introduce [compat_]save_altstack_ex() to unbreak x86 SMAP
x86, smap: Handle csum_partial_copy_*_user()
Diffstat (limited to 'include/linux/signal.h')
| -rw-r--r-- | include/linux/signal.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/signal.h b/include/linux/signal.h index d897484730c..2ac423bdb67 100644 --- a/include/linux/signal.h +++ b/include/linux/signal.h @@ -434,6 +434,14 @@ void signals_init(void); int restore_altstack(const stack_t __user *); int __save_altstack(stack_t __user *, unsigned long); +#define save_altstack_ex(uss, sp) do { \ + stack_t __user *__uss = uss; \ + struct task_struct *t = current; \ + put_user_ex((void __user *)t->sas_ss_sp, &__uss->ss_sp); \ + put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \ + put_user_ex(t->sas_ss_size, &__uss->ss_size); \ +} while (0); + #ifdef CONFIG_PROC_FS struct seq_file; extern void render_sigset_t(struct seq_file *, const char *, sigset_t *); |