net: hns3: fix data race in hns3_fetch_stats

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[ Upstream commit 748a81c8ce ]

In hns3_fetch_stats(), ring statistics, protected by u64_stats_sync, are
read and accumulated in ignorance of possible u64_stats_fetch_retry()
events. These statistics are already accumulated by
hns3_ring_stats_update(). Fix this by reading them into a temporary
buffer first.

Fixes: b20d7fe51e ("net: hns3: add some statitics info to tx process")
Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://patch.msgid.link/20260119160759.1455950-1-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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David Yang 2026-01-20 00:07:37 +08:00 • committed by Greg Kroah-Hartman

parent bfb9d5448e

commit a758e781d0

1 changed files with 36 additions and 33 deletions

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drivers/net/ethernet/hisilicon/hns3/hns3_enet.c

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