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Cong Wang ce8fe975fd net_sched: skbprio: Remove overly strict queue assertions
In the current implementation, skbprio enqueue/dequeue contains an assertion
that fails under certain conditions when SKBPRIO is used as a child qdisc under
TBF with specific parameters. The failure occurs because TBF sometimes peeks at
packets in the child qdisc without actually dequeuing them when tokens are
unavailable.

This peek operation creates a discrepancy between the parent and child qdisc
queue length counters. When TBF later receives a high-priority packet,
SKBPRIO's queue length may show a different value than what's reflected in its
internal priority queue tracking, triggering the assertion.

The fix removes this overly strict assertions in SKBPRIO, they are not
necessary at all.

Reported-by: syzbot+a3422a19b05ea96bee18@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=a3422a19b05ea96bee18
Fixes: aea5f654e6 ("net/sched: add skbprio scheduler")
Cc: Nishanth Devarajan <ndev2021@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Link: https://patch.msgid.link/20250329222536.696204-2-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-04-02 16:03:32 -07:00
arch Driver core updates for 6.15-rc1 2025-04-01 11:02:03 -07:00
block for-6.15/block-20250322 2025-03-26 18:08:55 -07:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto This update includes the following changes: 2025-03-29 10:01:55 -07:00
Documentation iommufd 6.15 merge window pull 2025-04-01 18:03:46 -07:00
drivers Rather tiny PR, mostly so that we can get into our trees your fix 2025-04-01 20:00:51 -07:00
fs Driver core updates for 6.15-rc1 2025-04-01 11:02:03 -07:00
include Rather tiny PR, mostly so that we can get into our trees your fix 2025-04-01 20:00:51 -07:00
init [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
io_uring for-6.15/io_uring-reg-vec-20250327 2025-03-28 15:07:04 -07:00
ipc treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
kernel Driver core updates for 6.15-rc1 2025-04-01 11:02:03 -07:00
lib iommufd 6.15 merge window pull 2025-04-01 18:03:46 -07:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm VFIO updates for v6.15-rc1 2025-04-01 19:35:19 -07:00
net net_sched: skbprio: Remove overly strict queue assertions 2025-04-02 16:03:32 -07:00
rust Char/Misc/IIO driver updates for 6.15-rc1 2025-04-01 11:26:08 -07:00
samples Char/Misc/IIO driver updates for 6.15-rc1 2025-04-01 11:26:08 -07:00
scripts Char/Misc/IIO driver updates for 6.15-rc1 2025-04-01 11:26:08 -07:00
security Driver core updates for 6.15-rc1 2025-04-01 11:02:03 -07:00
sound virtio: features, fixes, cleanups 2025-04-01 18:52:54 -07:00
tools Rather tiny PR, mostly so that we can get into our trees your fix 2025-04-01 20:00:51 -07:00
usr kbuild: hdrcheck: fix cross build with clang 2025-03-05 04:06:45 +09:00
virt ARM: 2025-03-25 14:22:07 -07:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-01-10 00:17:25 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: use host dylib naming convention to support macOS 2025-01-10 01:01:24 +01:00
.mailmap - The 7 patch series "powerpc/crash: use generic crashkernel 2025-04-01 10:06:52 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS I3C for 6.15 2025-04-01 16:47:47 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS Rather tiny PR, mostly so that we can get into our trees your fix 2025-04-01 20:00:51 -07:00
Makefile [ Merge note: this pull request depends on you having merged 2025-03-24 22:06:11 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.