From: Robert-Ionut Alexa robert-ionut.alexa@nxp.com
stable inclusion from stable-5.10.80 commit 41968262bb24772280a0b6fbc808cf740ae961d4 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 8120bd469f5525da229953c1197f2b826c0109f4 ]
Free the kbuf buffer before returning from the dpaa2_console_read() function. The variable no longer goes out of scope, leaking the storage it points to.
Fixes: c93349d8c170 ("soc: fsl: add DPAA2 console support") Signed-off-by: Robert-Ionut Alexa robert-ionut.alexa@nxp.com Signed-off-by: Ioana Ciornei ioana.ciornei@nxp.com Signed-off-by: Li Yang leoyang.li@nxp.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Weilong Chen chenweilong@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/soc/fsl/dpaa2-console.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/soc/fsl/dpaa2-console.c b/drivers/soc/fsl/dpaa2-console.c index 27243f706f37..53917410f2bd 100644 --- a/drivers/soc/fsl/dpaa2-console.c +++ b/drivers/soc/fsl/dpaa2-console.c @@ -231,6 +231,7 @@ static ssize_t dpaa2_console_read(struct file *fp, char __user *buf, cd->cur_ptr += bytes; written += bytes;
+ kfree(kbuf); return written;
err_free_buf: