* [PATCH] fail_function: remove a redundant mutex unlock
[not found] <20201110084245.3067324-1-luomeng12@huawei.com>
@ 2020-11-18 13:49 ` Masami Hiramatsu
2020-11-19 19:10 ` patchwork-bot+netdevbpf
0 siblings, 1 reply; 2+ messages in thread
From: Masami Hiramatsu @ 2020-11-18 13:49 UTC (permalink / raw)
To: jbacik, ast; +Cc: bpf, mhiramat, linux-kernel, luomeng12
From: Luo Meng <luomeng12@huawei.com>
Fix a mutex_unlock() issue where before copy_from_user() is
not called mutex_locked.
Fixes: 4b1a29a7f542 ("error-injection: Support fault injection framework")
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Luo Meng <luomeng12@huawei.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
0 files changed
diff --git a/kernel/fail_function.c b/kernel/fail_function.c
index 63b349168da7..b0b1ad93fa95 100644
--- a/kernel/fail_function.c
+++ b/kernel/fail_function.c
@@ -253,7 +253,7 @@ static ssize_t fei_write(struct file *file, const char __user *buffer,
if (copy_from_user(buf, buffer, count)) {
ret = -EFAULT;
- goto out;
+ goto out_free;
}
buf[count] = '\0';
sym = strstrip(buf);
@@ -307,8 +307,9 @@ static ssize_t fei_write(struct file *file, const char __user *buffer,
ret = count;
}
out:
- kfree(buf);
mutex_unlock(&fei_lock);
+out_free:
+ kfree(buf);
return ret;
}
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] fail_function: remove a redundant mutex unlock
2020-11-18 13:49 ` [PATCH] fail_function: remove a redundant mutex unlock Masami Hiramatsu
@ 2020-11-19 19:10 ` patchwork-bot+netdevbpf
0 siblings, 0 replies; 2+ messages in thread
From: patchwork-bot+netdevbpf @ 2020-11-19 19:10 UTC (permalink / raw)
To: Masami Hiramatsu; +Cc: jbacik, ast, bpf, linux-kernel, luomeng12
Hello:
This patch was applied to bpf/bpf.git (refs/heads/master):
On Wed, 18 Nov 2020 22:49:31 +0900 you wrote:
> From: Luo Meng <luomeng12@huawei.com>
>
> Fix a mutex_unlock() issue where before copy_from_user() is
> not called mutex_locked.
>
> Fixes: 4b1a29a7f542 ("error-injection: Support fault injection framework")
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
> Signed-off-by: Luo Meng <luomeng12@huawei.com>
> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
>
> [...]
Here is the summary with links:
- fail_function: remove a redundant mutex unlock
https://git.kernel.org/bpf/bpf/c/891515d945a3
You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
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2020-11-18 13:49 ` [PATCH] fail_function: remove a redundant mutex unlock Masami Hiramatsu
2020-11-19 19:10 ` patchwork-bot+netdevbpf
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