On Mon, Feb 1, 2010 at 8:22 AM, Rafael J. Wysocki <r...@sisk.pl> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.32. Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=15196
> Subject : kmem_cache_create: duplicate cache ccid2_h
> Submitter : Heinz Diehl <h...@fancy-poultry.org>
> Date : 2010-01-30 18:33 (2 days old)
> References : http://marc.info/?l=linux-kernel&m=126487640324942&w=4
Cced Neil,
I think this one is introduced by commit
de4ef86cfce60d2250111f34f8a084e769f23b16,
passing char *slab_name_fmt as function parameter, but vsnprintf is
using sizeof(slab_name_fmt),
which is 8 (or 4 in 32bit kernel) instead of 32 as old version.
Does following patch resolve this bug, Heinz?
diff --git a/net/dccp/ccid.c b/net/dccp/ccid.c
index 57dfb9c..6e52879 100644
--- a/net/dccp/ccid.c
+++ b/net/dccp/ccid.c
@@ -77,13 +77,14 @@ int ccid_getsockopt_builtin_ccids(struct sock *sk, int len,
return err;
}
-static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char
*slab_name_fmt, const char *fmt,...)
+static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char
*slab_name_fmt,
+ int length,const char *fmt,...)
{
struct kmem_cache *slab;
va_list args;
va_start(args, fmt);
- vsnprintf(slab_name_fmt, sizeof(slab_name_fmt), fmt, args);
+ vsnprintf(slab_name_fmt, length, fmt, args);
va_end(args);
slab = kmem_cache_create(slab_name_fmt, sizeof(struct ccid) +
obj_size, 0,
@@ -104,6 +105,7 @@ static int ccid_activate(struct ccid_operations *ccid_ops)
ccid_ops->ccid_hc_rx_slab =
ccid_kmem_cache_create(ccid_ops->ccid_hc_rx_obj_size,
ccid_ops->ccid_hc_rx_slab_name,
+
sizeof(ccid_ops->ccid_hc_rx_slab_name),
"ccid%u_hc_rx_sock",
ccid_ops->ccid_id);
if (ccid_ops->ccid_hc_rx_slab == NULL)
@@ -112,6 +114,7 @@ static int ccid_activate(struct ccid_operations *ccid_ops)
ccid_ops->ccid_hc_tx_slab =
ccid_kmem_cache_create(ccid_ops->ccid_hc_tx_obj_size,
ccid_ops->ccid_hc_tx_slab_name,
+
sizeof(ccid_ops->ccid_hc_tx_slab_name),
"ccid%u_hc_tx_sock",
ccid_ops->ccid_id);
if (ccid_ops->ccid_hc_tx_slab == NULL)
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majord...@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
To unsubscribe from this list: send the line "unsubscribe kernel-testers" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
