Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
um: init cpu_tasks[] earlier
This is currently done in uml_finishsetup(), but e.g. with
KCOV enabled we'll crash because some init code can call
into e.g. memparse(), which has coverage annotations, and
then the checks in check_kcov_mode() crash because current
is NULL.
Simply initialize the cpu_tasks[] array statically, which
fixes the crash. For the later SMP work, it seems to have
not really caused any problems yet, but initialize all of
the entries anyway.
Link: https://patch.msgid.link/20250924113214.c76cd74d0583.I974f691ebb1a2b47915bd2b04cc38e5263b9447f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+3
-3
+3
-1
arch/um/kernel/process.c
+3
-1
arch/um/kernel/process.c
···
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* cares about its entry, so it's OK if another processor is modifying its
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* entry.
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*/
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-
struct task_struct *cpu_tasks[NR_CPUS];
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+
struct task_struct *cpu_tasks[NR_CPUS] = {
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[0 ... NR_CPUS - 1] = &init_task,
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+
};
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EXPORT_SYMBOL(cpu_tasks);
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void free_stack(unsigned long stack, int order)