In the Linux kernel, the following vulnerability has been resolved:

padata: Put CPU offline callback in ONLINE section to allow failure

syzbot reported the following warning:

    DEAD callback error for CPU1
    WARNING: kernel/cpu.c:1463 at _cpu_down+0x759/0x1020 kernel/cpu.c:1463, CPU#0: syz.0.1960/14614

at commit 4ae12d8bd9a8 ("Merge tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux")
which tglx traced to padata_cpu_dead() given it's the only
sub-CPUHP_TEARDOWN_CPU callback that returns an error.

Failure isn't allowed in hotplug states before CPUHP_TEARDOWN_CPU
so move the CPU offline callback to the ONLINE section where failure is
possible.

https://git.kernel.org/stable/c/3e6c08dd97dcd22a00aee469e0adfa819071d80e

https://git.kernel.org/stable/c/5a9f29a3e076b637d2234093e57989cf755ded5b

https://git.kernel.org/stable/c/65dae8b34f0810f3fa9f77c4c63650cd20820693

https://git.kernel.org/stable/c/9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3

https://git.kernel.org/stable/c/a6d44f477000c6352de6b05e9e276e62083e5fbf

https://git.kernel.org/stable/c/c8c4a2972f83c8b68ff03b43cecdb898939ff851

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