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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-10-14 12:09:37 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-10-15 13:47:59 +0200 |
| commit | 0ebfd313fd4baf3fa1bd02d5f106e377595d4987 (patch) | |
| tree | 22e157baf879135b96cab1f436813c110168e2e5 /arch | |
| parent | 18d6624ec5e628fa35e46a5d69abfce3d5fea363 (diff) | |
| download | lwn-0ebfd313fd4baf3fa1bd02d5f106e377595d4987.tar.gz lwn-0ebfd313fd4baf3fa1bd02d5f106e377595d4987.zip | |
s390/compat,signal: fix return value of copy_siginfo_(to|from)_user32()
The return value of copy_siginfo_(to|from)_user32() gets passed to
user space, however we do not convert a positive return value from
copy_(to|from)_user to -EFAULT.
Therefore these functions (and the calling system calls) my incorrectly
return a positive number (bytes not copied) instead of -EFAULT.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/compat_signal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index 1389b637dae5..adaa9e9478d8 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -99,7 +99,7 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) break; } } - return err; + return err ? -EFAULT : 0; } int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) @@ -148,7 +148,7 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from) break; } } - return err; + return err ? -EFAULT : 0; } static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs) |