This is a note to let you know that I've just added the patch titled
bnx2x: fix possible panic under memory stress
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bnx2x-fix-possible-panic-under-memory-stress.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sat Jul 26 10:08:04 PDT 2014
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Thu, 26 Jun 2014 00:44:02 -0700
Subject: bnx2x: fix possible panic under memory stress
From: Eric Dumazet <edumazet@xxxxxxxxxx>
[ Upstream commit 07b0f00964def8af9321cfd6c4a7e84f6362f728 ]
While it is legal to kfree(NULL), it is not wise to use :
put_page(virt_to_head_page(NULL))
BUG: unable to handle kernel paging request at ffffeba400000000
IP: [<ffffffffc01f5928>] virt_to_head_page+0x36/0x44 [bnx2x]
Reported-by: Michel Lespinasse <walken@xxxxxxxxxx>
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Ariel Elior <ariel.elior@xxxxxxxxxx>
Fixes: d46d132cc021 ("bnx2x: use netdev_alloc_frag()")
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -793,7 +793,8 @@ static void bnx2x_tpa_stop(struct bnx2x
return;
}
- bnx2x_frag_free(fp, new_data);
+ if (new_data)
+ bnx2x_frag_free(fp, new_data);
drop:
/* drop the packet and keep the buffer in the bin */
DP(NETIF_MSG_RX_STATUS,
Patches currently in stable-queue which might be from edumazet@xxxxxxxxxx are
queue-3.14/appletalk-fix-socket-referencing-in-skb.patch
queue-3.14/vlan-free-percpu-stats-in-device-destructor.patch
queue-3.14/8021q-fix-a-potential-memory-leak.patch
queue-3.14/ipv4-fix-dst-race-in-sk_dst_get.patch
queue-3.14/tcp-fix-tcp_match_skb_to_sack-for-unaligned-sack-at-end-of-an-skb.patch
queue-3.14/ipv4-irq-safe-sk_dst_set-and-ipv4_sk_update_pmtu-fix.patch
queue-3.14/net-fix-sparse-warning-in-sk_dst_set.patch
queue-3.14/bnx2x-fix-possible-panic-under-memory-stress.patch
queue-3.14/ipv4-fix-buffer-overflow-in-ip_options_compile.patch
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