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kernel/fork: use vfree_atomic() to free thread stack

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vfree() is going to use sleeping lock.  Thread stack freed in atomic
context, therefore we must use vfree_atomic() here.

Link: http://lkml.kernel.org/r/1479474236-4139-6-git-send-email-hch@lst.de
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Jisheng Zhang <jszhang@marvell.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: John Dias <joaodias@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrey Ryabinin 2016-12-12 16:44:14 -08:00 committed by Linus Torvalds
parent bf22e37a64
commit 0f110a9b95
1 changed files with 1 additions and 1 deletions
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2
kernel/fork.c
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@ -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