mirror of
https://github.com/coolsnowwolf/lede.git
synced 2025-04-16 04:13:31 +00:00
86bc29e4a8
[mac80211] ca5ee6e mac80211: Fix potential endless loop 2c14710 mac80211: add more AQL fixes/improvements 91fb3ce mac80211: remove an obsolete patch that is no longer doing anything useful acf1733 mac80211: add preliminary support for enabling 802.11ax in config d717343 mac80211: update encap offload patches to the latest version 673062f mac80211: allow bigger A-MSDU sizes in VHT, even if HT is limited caf7277 mac80211: do not allow bigger VHT MPDUs than the hardware supports cd36c0d mac80211: select the first available channel for 5GHz interfaces 1c6d456 mac80211: fix regression in station connection monitor optimization 4bd7689 mac80211: update sta connection monitor regression fix [target] Sync: at91, ath25, ath79, lantiq, mediatek, mvebu.
29 lines
989 B
Diff
29 lines
989 B
Diff
From: Robin Murphy <robin.murphy@arm.com>
|
|
Date: Fri, 17 Jan 2020 15:48:39 +0000
|
|
Subject: [PATCH] arm64: csum: Fix pathological zero-length calls
|
|
|
|
In validating the checksumming results of the new routine, I sadly
|
|
neglected to test its not-checksumming results. Thus it slipped through
|
|
that the one case where @buff is already dword-aligned and @len = 0
|
|
manages to defeat the tail-masking logic and behave as if @len = 8.
|
|
For a zero length it doesn't make much sense to deference @buff anyway,
|
|
so just add an early return (which has essentially zero impact on
|
|
performance).
|
|
|
|
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
|
|
Signed-off-by: Will Deacon <will@kernel.org>
|
|
---
|
|
|
|
--- a/arch/arm64/lib/csum.c
|
|
+++ b/arch/arm64/lib/csum.c
|
|
@@ -20,6 +20,9 @@ unsigned int do_csum(const unsigned char
|
|
const u64 *ptr;
|
|
u64 data, sum64 = 0;
|
|
|
|
+ if (unlikely(len == 0))
|
|
+ return 0;
|
|
+
|
|
offset = (unsigned long)buff & 7;
|
|
/*
|
|
* This is to all intents and purposes safe, since rounding down cannot
|