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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 23:14:49 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-26 01:15:03 -0500 |
| commit | a566c288826ad4502e43b59570214f18173d7744 (patch) | |
| tree | f95245e6aa2d4ba9edf7d065645254e19eefd693 | |
| parent | 8d9807b109497ca41d363dc7b6ff2bb6c0d52524 (diff) | |
| download | lwn-a566c288826ad4502e43b59570214f18173d7744.tar.gz lwn-a566c288826ad4502e43b59570214f18173d7744.zip | |
x32: fix waitid()
It needs 64bit rusage and 32bit siginfo. glibc never calls it with
non-NULL rusage pointer, or we would've seen breakage already...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | kernel/compat.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/compat.c b/kernel/compat.c index 0770ac57c62b..e5cc33c7122c 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -587,7 +587,11 @@ COMPAT_SYSCALL_DEFINE5(waitid, return ret; if (uru) { - ret = put_compat_rusage(&ru, uru); + /* sys_waitid() overwrites everything in ru */ + if (COMPAT_USE_64BIT_TIME) + ret = copy_to_user(uru, &ru, sizeof(ru)); + else + ret = put_compat_rusage(&ru, uru); if (ret) return ret; } |