Re: 3.7-rc2 regression : file copied to CIFS-mounted directory corrupted
flat view
From: Eric Dumazet <hidden>
Date: 2012-10-23 06:08:53
Also in:
lkml
Subsystem:
networking [general], networking [sockets], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Kuniyuki Iwashima, Willem de Bruijn, Linus Torvalds
On Tue, 2012-10-23 at 05:38 +0000, Jongman Heo wrote:
Hmm, I've just met the issue, with the commit 5640f768 reverted. It seems that the issue does not always happen. So, my bisection may not be correct. At this moment, I don't have enough time to do bisection again.. Regards.
What happens, if instead of reverting you try the following ? If this solves the problem, then we shall find the driver that assumes frags are order-0 pages only.
diff --git a/net/core/sock.c b/net/core/sock.c
index 8a146cf..a743e7c 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c@@ -1726,7 +1726,7 @@ struct sk_buff *sock_alloc_send_skb(struct sock *sk, unsigned long size, EXPORT_SYMBOL(sock_alloc_send_skb); /* On 32bit arches, an skb frag is limited to 2^15 */ -#define SKB_FRAG_PAGE_ORDER get_order(32768) +#define SKB_FRAG_PAGE_ORDER 0 bool sk_page_frag_refill(struct sock *sk, struct page_frag *pfrag) {