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| author | Ingo Molnar <mingo@elte.hu> | 2008-08-18 12:59:32 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-12 15:17:39 +0200 |
| commit | 9f482807a6bd7e2aa1ed0d8cfc48463ec4ca3568 (patch) | |
| tree | 0050a865ffc49e71e9787ad1012d39a4c3c5d8b4 | |
| parent | 620f2efcdc5c7a2db68da41bc3df3cf9a718024e (diff) | |
| download | linux-3.10-9f482807a6bd7e2aa1ed0d8cfc48463ec4ca3568.tar.gz linux-3.10-9f482807a6bd7e2aa1ed0d8cfc48463ec4ca3568.tar.bz2 linux-3.10-9f482807a6bd7e2aa1ed0d8cfc48463ec4ca3568.zip | |
x86, fpu: check __clear_user() return value
fix warning:
arch/x86/kernel/xsave.c: In function ‘save_i387_xstate’:
arch/x86/kernel/xsave.c:98: warning: ignoring return value of ‘__clear_user’, declared with attribute warn_unused_result
check the return value and act on it. We should not be ignoring faults
at this point.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/xsave.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c index 2f98323716d..9abac8a9d82 100644 --- a/arch/x86/kernel/xsave.c +++ b/arch/x86/kernel/xsave.c @@ -95,7 +95,9 @@ int save_i387_xstate(void __user *buf) * Start with clearing the user buffer. This will present a * clean context for the bytes not touched by the fxsave/xsave. */ - __clear_user(buf, sig_xstate_size); + err = __clear_user(buf, sig_xstate_size); + if (err) + return err; if (task_thread_info(tsk)->status & TS_XSAVE) err = xsave_user(buf); |