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| author | Andrew Morton <akpm@linux-foundation.org> | 2011-04-13 03:13:31 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-04-20 04:00:48 +0400 |
| commit | 70a5f52165bd04cf3b33f30d5d234be28dcf29d4 (patch) | |
| tree | 5cccc910017e5ff7131a68f47865a998cd7cc9f3 /drivers/char | |
| parent | 7e5b58bcbcb3d7518389c1d82fb6e926f5a9f72c (diff) | |
| download | linux-70a5f52165bd04cf3b33f30d5d234be28dcf29d4.tar.xz | |
kmsg: properly support writev to avoid interleaved printk lines fix
make `len' size_t, avoid multiple-assignments.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Lennart Poettering <lennart@poettering.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/mem.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 78923a9f5345..8fc04b4f311f 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -810,11 +810,11 @@ static ssize_t kmsg_writev(struct kiocb *iocb, const struct iovec *iv, unsigned long count, loff_t pos) { char *line, *p; - int len, i; + int i; ssize_t ret = -EFAULT; + size_t len = iov_length(iv, count); - len = iov_length(iv, count); - line = p = kmalloc(len + 1, GFP_KERNEL); + line = kmalloc(len + 1, GFP_KERNEL); if (line == NULL) return -ENOMEM; @@ -822,6 +822,7 @@ static ssize_t kmsg_writev(struct kiocb *iocb, const struct iovec *iv, * copy all vectors into a single string, to ensure we do * not interleave our log line with other printk calls */ + p = line; for (i = 0; i < count; i++) { if (copy_from_user(p, iv[i].iov_base, iv[i].iov_len)) goto out; |