[PATCH] tomoyo: don't special case PF_IO_WORKER for PF_KTHREAD

The io_uring PF_IO_WORKER threads no longer have PF_KTHREAD set, so no
need to special case them for credential checks.

Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 security/tomoyo/network.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/tomoyo/network.c b/security/tomoyo/network.c
index 478f757ff843..8dc61335f65e 100644
--- a/security/tomoyo/network.c
+++ b/security/tomoyo/network.c

@@ -613,7 +613,7 @@ static int tomoyo_check_unix_address(struct sockaddr *addr,
 static bool tomoyo_kernel_service(void)
 {
 	/* Nothing to do if I am a kernel service. */
-	return (current->flags & (PF_KTHREAD | PF_IO_WORKER)) == PF_KTHREAD;
+	return current->flags & PF_KTHREAD;
 }
 
 /**

-- 
2.31.0

-- 
Jens Axboe

On 3/25/2021 5:44 PM, Jens Axboe wrote:

The io_uring PF_IO_WORKER threads no longer have PF_KTHREAD set, so no
need to special case them for credential checks.

Could you cite the commit where that change was made?

On 3/26/21 10:03 AM, Casey Schaufler wrote:

On 3/25/2021 5:44 PM, Jens Axboe wrote:

quoted

The io_uring PF_IO_WORKER threads no longer have PF_KTHREAD set, so no
need to special case them for credential checks.

Could you cite the commit where that change was made?

See previous reply, same one:

commit 3bfe6106693b6b4ba175ad1f929c4660b8f59ca8
Author: Jens Axboe [off-list ref]
Date:   Tue Feb 16 14:15:30 2021 -0700

    io-wq: fork worker threads from original task

-- 
Jens Axboe