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[v2,3/3] firewire: Fix using uninitialized value

Message ID 20220615121505.61412-4-o-takashi@sakamocchi.jp
State New
Headers show
Series firewire: fix minor issues | expand

Commit Message

Takashi Sakamoto June 15, 2022, 12:15 p.m. UTC 
From: Lv Ruyi <lv.ruyi@zte.com.cn>

If data is null, request->data wouldn't be assigned value. It is random
value, but we use it in handle_exclusive_region_request() and
handle_fcp_region_request() later. Fix the bug by initializing it.

(Revised by Takashi Sakamoto to rebase to the previous patch.)

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 drivers/firewire/core-transaction.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index 4604a9d97fd1..613aff624391 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -779,7 +779,7 @@  static struct fw_request *allocate_request(struct fw_card *card,
 		return NULL;
 	}
 
-	request = kmalloc(struct_size(request, data, length / sizeof(request->data[0])),
+	request = kzalloc(struct_size(request, data, length / sizeof(request->data[0])),
 			  GFP_ATOMIC);
 	if (request == NULL)
 		return NULL;