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linux-yocto/6.1: fix uninitialized read in nohz_full/isolcpus setup

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Integrating the following commit(s) to linux-yocto/6.1:

    4675ec8d0b9a kernel/sched: Fix uninitialized read in nohz_full/isolcpus setup

The carry forward of commit from the v5.15 linux-yocto kernel:

https://git.yoctoproject.org/linux-yocto/commit/?id=97c96388922

...in which case the sanity checks are properly *after* the allocation
and processing of the bootargs into the cpumask.

However, it seems patch (or wiggle?) apparently decided to put the
sanity checks *before* the population of the cpumask during the
carry-forward and generation of the new v6.1 kernel.  Meaning they are
validating uninitialized memory and hence nohz_full= and isolcpus= are
subject to random failures even for valid input ranges.

(From OE-Core rev: 4b349ee66eab8ebe3150ac4c1b449ea5c264a5be)

(From OE-Core rev: 5caea18a41d184c15e0685191364eb659a84ee59)

Signed-off-by: Adrian Cinal <adriancinal1@gmail.com>
Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 92642acd1166b7990fb520337b78a4d37ce7cbe4)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Bruce Ashfield
2023-08-21 11:44:40 -04:00
committed by Steve Sakoman
parent a76e75e0f1
commit 81d471ccba
3 changed files with 16 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/recipes-kernel/linux/linux-yocto-rt_6.1.bb
+2 -2
View File
@@ -14,8 +14,8 @@ python () {
raise bb.parse.SkipRecipe("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
}
SRCREV_machine ?= "0aa0b7396b5cbfccd69d23b07e095e4c4fa20589"
SRCREV_meta ?= "8da434f09dc2892d8ec26325f0856aabccc17bed"
SRCREV_machine ?= "57eb889d204238845f238b44db6affe64480b958"
SRCREV_meta ?= "2e1a81f17434de2a9bd27676efdde7861946582e"
SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;branch=${KBRANCH};name=machine;protocol=https \
git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-6.1;destsuffix=${KMETA};protocol=https"