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Fix possible (but unlikely) out-of-bounds access in

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the timer migration per-CPU-init code.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2024-05-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix possible (but unlikely) out-of-bounds access in the timer
  migration per-CPU-init code"

* tag 'timers-urgent-2024-05-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers/migration: Prevent out of bounds access on failure
This commit is contained in:
Linus Torvalds 2024-05-10 10:15:58 -07:00
commit 92d503011f
1 changed files with 2 additions and 2 deletions
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4
kernel/time/timer_migration.c
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@ -1596,7 +1596,7 @@ static int tmigr_setup_groups(unsigned int cpu, unsigned int node)
} while (i < tmigr_hierarchy_levels);
do {
while (i > 0) {
group = stack[--i];
if (err < 0) {
@ -1645,7 +1645,7 @@ static int tmigr_setup_groups(unsigned int cpu, unsigned int node)
tmigr_connect_child_parent(child, group);
}
}
} while (i > 0);
}
kfree(stack);