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Commit 0ebfd313 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

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: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 18d6624e

arch/s390/kernel/compat_signal.c

+2 −2
Original line number Diff line number Diff line
@@ -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)