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eed129272d
Integrating the following commit(s) to linux-yocto/6.12:
1/1 [
Author: Ross Burton
Email: ross.burton@arm.com
Subject: libbpf: silence maybe-uninitialized warning from clang
Date: Wed, 4 Jun 2025 21:22:23 +0100
perf is build with -Werror, but clang 20.1.6 (incorrectly) finds that
mod_len may be used uninitialized:
libbpf.c: In function 'find_kernel_btf_id.constprop':
libbpf.c:10009:33: error: 'mod_len' may be used uninitialized [-Werror=maybe-uninitialized]
10009 | if (mod_name && strncmp(mod->name, mod_name, mod_len) != 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libbpf.c:9979:21: note: 'mod_len' was declared here
9979 | int ret, i, mod_len;
| ^~~~~~~
Inspecting the code it can be seen that mod_len is set if mod_name is
set, and the strncmp() is only called if mod_name is set, so this is a
false positive (interestingly, clang doesn't spot the same issue above).
Silence the false positive by explicitly initializing mod_len to 0.
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]
(From OE-Core rev: 0454186eeceafb8e0bd2b29ac2f8b46f9601f65d)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 43f6b7795170f0e571265f22bcef51554684206f)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
49 lines
2.1 KiB
BlitzBasic
49 lines
2.1 KiB
BlitzBasic
KBRANCH ?= "v6.12/standard/preempt-rt/base"
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require recipes-kernel/linux/linux-yocto.inc
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# CVE exclusions
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include recipes-kernel/linux/cve-exclusion_6.12.inc
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# Skip processing of this recipe if it is not explicitly specified as the
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# PREFERRED_PROVIDER for virtual/kernel. This avoids errors when trying
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# to build multiple virtual/kernel providers, e.g. as dependency of
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# core-image-rt-sdk, core-image-rt.
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python () {
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if d.getVar("KERNEL_PACKAGE_NAME") == "kernel" and d.getVar("PREFERRED_PROVIDER_virtual/kernel") != "linux-yocto-rt":
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raise bb.parse.SkipRecipe("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
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}
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SRCREV_machine ?= "7cb6d42c40de351ecab0a083aef260f84407de0d"
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SRCREV_meta ?= "60b8562e9989f268ad5d241989f56b71cfa1f648"
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SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;branch=${KBRANCH};name=machine;protocol=https \
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git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-6.12;destsuffix=${KMETA};protocol=https"
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LINUX_VERSION ?= "6.12.31"
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LIC_FILES_CHKSUM = "file://COPYING;md5=6bc538ed5bd9a7fc9398086aedcd7e46"
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DEPENDS += "${@bb.utils.contains('ARCH', 'x86', 'elfutils-native', '', d)}"
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DEPENDS += "openssl-native util-linux-native"
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PV = "${LINUX_VERSION}+git"
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KMETA = "kernel-meta"
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KCONF_BSP_AUDIT_LEVEL = "1"
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LINUX_KERNEL_TYPE = "preempt-rt"
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COMPATIBLE_MACHINE = "^(qemux86|qemux86-64|qemuarm|qemuarmv5|qemuarm64|qemuppc|qemumips)$"
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KERNEL_DEVICETREE:qemuarmv5 = "arm/versatile-pb.dtb"
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# Functionality flags
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KERNEL_EXTRA_FEATURES ?= "features/netfilter/netfilter.scc features/taskstats/taskstats.scc"
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KERNEL_FEATURES:append = " ${KERNEL_EXTRA_FEATURES}"
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KERNEL_FEATURES:append:qemuall = " cfg/virtio.scc features/drm-bochs/drm-bochs.scc"
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KERNEL_FEATURES:append:qemux86 = " cfg/sound.scc cfg/paravirt_kvm.scc"
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KERNEL_FEATURES:append:qemux86-64 = " cfg/sound.scc cfg/paravirt_kvm.scc"
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KERNEL_FEATURES:append = "${@bb.utils.contains("DISTRO_FEATURES", "ptest", " features/scsi/scsi-debug.scc", "", d)}"
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KERNEL_FEATURES:append = "${@bb.utils.contains("DISTRO_FEATURES", "ptest", " features/gpio/mockup.scc features/gpio/sim.scc", "", d)}"
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