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Jakub Kicinski 339346d49a net: sched: gred: prevent races when adding offloads to stats
Naresh reports seeing a warning that gred is calling
u64_stats_update_begin() with preemption enabled.
Arnd points out it's coming from _bstats_update().

We should be holding the qdisc lock when writing
to stats, they are also updated from the datapath.

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Link: https://lore.kernel.org/all/CA+G9fYsTr9_r893+62u6UGD3dVaCE-kN9C-Apmb2m=hxjc1Cqg@mail.gmail.com/
Fixes: e49efd5288 ("net: sched: gred: support reporting stats from offloads")
Link: https://lore.kernel.org/r/20230113044137.1383067-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-18 20:28:25 -08:00
arch s390 updates for 6.2-rc4 2023-01-12 17:09:20 -06:00
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Documentation Including fixes from rxrpc. 2023-01-12 18:20:44 -06:00
drivers wireless fixes for v6.2 2023-01-18 20:10:31 -08:00
fs Including fixes from rxrpc. 2023-01-12 18:20:44 -06:00
include bpf-for-netdev 2023-01-17 19:13:02 -08:00
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kernel bpf-for-netdev 2023-01-17 19:13:02 -08:00
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net net: sched: gred: prevent races when adding offloads to stats 2023-01-18 20:28:25 -08:00
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sound xen: branch for v6.2-rc4 2023-01-12 17:02:20 -06:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf 2023-01-16 13:10:16 +00:00
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MAINTAINERS MAINTAINERS: Update AMD XGBE driver maintainers 2023-01-17 19:07:04 -08:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.