From: Tejun Heo <htejun@gmail.com>
Date: Sat, 7 Apr 2007 05:59:41 +0000 (+0900)
Subject: [PATCH] irq-devres: fix failure path of devm_request_irq()
X-Git-Tag: firefly_0821_release~30407
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7f30e49ee1c2c1e95ce9d2ccce5221ddb793dd60;p=firefly-linux-kernel-4.4.55.git

[PATCH] irq-devres: fix failure path of devm_request_irq()

devres should be deallocated with devres_free() not kfree().  This bug
corrupts slab on IRQ request failure.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/irq/devres.c b/kernel/irq/devres.c
index 85a430da0fb6..d8ee241115f5 100644
--- a/kernel/irq/devres.c
+++ b/kernel/irq/devres.c
@@ -54,7 +54,7 @@ int devm_request_irq(struct device *dev, unsigned int irq,
 
 	rc = request_irq(irq, handler, irqflags, devname, dev_id);
 	if (rc) {
-		kfree(dr);
+		devres_free(dr);
 		return rc;
 	}