[PATCH 05/10] kernel/fork: use vfree_atomic() to free thread stack
From: Christoph Hellwig <hch@lst.de>
Date: 2016-11-18 13:04:29
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Subsystem:
exec & binfmt api, elf, memory management - core, scheduler, the rest · Maintainers:
Kees Cook, Andrew Morton, David Hildenbrand, Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
From: Andrey Ryabinin <redacted> vfree() is going to use sleeping lock. Thread stack freed in atomic context, therefore we must use vfree_atomic() here. Signed-off-by: Andrey Ryabinin <redacted> --- kernel/fork.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index 997ac1d..cfee5ec 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c@@ -229,7 +229,7 @@ static inline void free_thread_stack(struct task_struct *tsk) } local_irq_restore(flags); - vfree(tsk->stack); + vfree_atomic(tsk->stack); return; } #endif
--
2.1.4
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