lkml.org 
[lkml]   [2023]   [Mar]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] ntb_tool: check null return of devm_kcalloc in tool_init_mws
Date
devm_kcalloc may fails, tc->peers[pidx].outmws might be null
and will cause null pointer dereference later.

Fixes: 7f46c8b3a552 ("NTB: ntb_tool: Add full multi-port NTB API support")
Signed-off-by: Kang Chen <void0red@gmail.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
---
v2 -> v1: add Fixes and Reviewed-by tags

drivers/ntb/test/ntb_tool.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/ntb/test/ntb_tool.c b/drivers/ntb/test/ntb_tool.c
index 5ee0afa62..eeeb4b1c9 100644
--- a/drivers/ntb/test/ntb_tool.c
+++ b/drivers/ntb/test/ntb_tool.c
@@ -998,6 +998,8 @@ static int tool_init_mws(struct tool_ctx *tc)
tc->peers[pidx].outmws =
devm_kcalloc(&tc->ntb->dev, tc->peers[pidx].outmw_cnt,
sizeof(*tc->peers[pidx].outmws), GFP_KERNEL);
+ if (tc->peers[pidx].outmws == NULL)
+ return -ENOMEM;

for (widx = 0; widx < tc->peers[pidx].outmw_cnt; widx++) {
tc->peers[pidx].outmws[widx].pidx = pidx;
--
2.34.1
\
 
 \ /
  Last update: 2023-03-27 00:47    [W:0.083 / U:0.404 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site