Messages in this thread Patch in this message | | | Date | Tue, 1 Apr 2008 20:48:23 +0400 | From | Cyrill Gorcunov <> | Subject | [PATCH] bttv: Bt832 - fix possible NULL pointer deref |
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This patch does fix potential NULL pointer dereference
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> ---
Index: linux-2.6.git/drivers/media/video/bt8xx/bt832.c =================================================================== --- linux-2.6.git.orig/drivers/media/video/bt8xx/bt832.c 2008-01-21 19:35:13.000000000 +0300 +++ linux-2.6.git/drivers/media/video/bt8xx/bt832.c 2008-04-01 20:43:03.000000000 +0400 @@ -97,6 +97,11 @@ int bt832_init(struct i2c_client *i2c_cl int rc; buf=kmalloc(65,GFP_KERNEL); + if (!buf) { + v4l_err(&t->client, + "Unable to allocate memory. Detaching.\n"); + return 0; + } bt832_hexdump(i2c_client_s,buf); if(buf[0x40] != 0x31) { @@ -211,7 +216,12 @@ bt832_command(struct i2c_client *client, switch (cmd) { case BT832_HEXDUMP: { unsigned char *buf; - buf=kmalloc(65,GFP_KERNEL); + buf=kmalloc(65, GFP_KERNEL); + if (!buf) { + v4l_err(&t->client, + "Unable to allocate memory\n"); + break; + } bt832_hexdump(&t->client,buf); kfree(buf); }
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