[PATCH 5.15 054/132] ethtool: eeprom: fix null-deref on genl_info in dump

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From: Xin Long <lucien.xin@xxxxxxxxx>

commit 9d9effca9d7d7cf6341182a7c5cabcbd6fa28063 upstream.

The similar fix as commit 46cdedf2a0fa ("ethtool: pse-pd: fix null-deref on
genl_info in dump") is also needed for ethtool eeprom.

Fixes: c781ff12a2f3 ("ethtool: Allow network drivers to dump arbitrary EEPROM data")
Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
Link: https://lore.kernel.org/r/5575919a2efc74cd9ad64021880afc3805c54166.1666362167.git.lucien.xin@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/ethtool/eeprom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ethtool/eeprom.c b/net/ethtool/eeprom.c
index 1c94bb8ea03f..49c0a2a77f02 100644
--- a/net/ethtool/eeprom.c
+++ b/net/ethtool/eeprom.c
@@ -124,7 +124,7 @@ static int eeprom_prepare_data(const struct ethnl_req_info *req_base,
 	if (ret)
 		goto err_free;
 
-	ret = get_module_eeprom_by_page(dev, &page_data, info->extack);
+	ret = get_module_eeprom_by_page(dev, &page_data, info ? info->extack : NULL);
 	if (ret < 0)
 		goto err_ops;
 
-- 
2.38.1






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