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ee230090f6
Dimitar Kanaliev says:
====================
Fix truncation bug in coerce_reg_to_size_sx and extend selftests.
This patch series addresses a truncation bug in the eBPF verifier function
coerce_reg_to_size_sx(). The issue was caused by the incorrect ordering
of assignments between 32-bit and 64-bit min/max values, leading to
improper truncation when updating the register state. This issue has been
reported previously by Zac Ecob[1] , but was not followed up on.
The first patch fixes the assignment order in coerce_reg_to_size_sx()
to ensure correct truncation. The subsequent patches add selftests for
coerce_{reg,subreg}_to_size_sx.
Changelog:
v1 -> v2:
- Moved selftests inside the conditional check for cpuv4
[1] (https://lore.kernel.org/bpf/h3qKLDEO6m9nhif0eAQX4fVrqdO0D_OPb0y5HfMK9jBePEKK33wQ3K-bqSVnr0hiZdFZtSJOsbNkcEQGpv_yJk61PAAiO8fUkgMRSO-lB50=@protonmail.com/)
====================
Link: https://lore.kernel.org/r/20241014121155.92887-1-dimitar.kanaliev@siteground.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
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Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
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There are various text files in the Documentation/ subdirectory,
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Please read the Documentation/process/changes.rst file, as it contains the
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the problems which may result by upgrading your kernel.