linux-kernel - [PATCH 2/3] signal: Don't exit for PF_USER

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230522025124.5863-3-michael.christie@oracle.com>
Date:   Sun, 21 May 2023 21:51:23 -0500
From:   Mike Christie <michael.christie@...cle.com>
To:     oleg@...hat.com, linux@...mhuis.info, nicolas.dichtel@...nd.com,
        axboe@...nel.dk, ebiederm@...ssion.com,
        torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, mst@...hat.com,
        sgarzare@...hat.com, jasowang@...hat.com, stefanha@...hat.com,
        brauner@...nel.org
Cc:     Mike Christie <michael.christie@...cle.com>
Subject: [PATCH 2/3] signal: Don't exit for PF_USER_WORKER tasks

vhost_tasks also need to perform cleanup before exiting so this changes
the check in get_signal to be more generic so both io thread and vhost
tasks can do their cleanup.

Signed-off-by: Mike Christie <michael.christie@...cle.com>
---
 kernel/signal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 3dc99b9aec7f..8050fe23c732 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2869,11 +2869,11 @@ bool get_signal(struct ksignal *ksig)
 		}
 
 		/*
-		 * PF_IO_WORKER threads will catch and exit on fatal signals
+		 * PF_USER_WORKER threads will catch and exit on fatal signals
 		 * themselves. They have cleanup that must be performed, so
 		 * we cannot call do_exit() on their behalf.
 		 */
-		if (current->flags & PF_IO_WORKER)
+		if (current->flags & PF_USER_WORKER)
 			goto out;
 
 		/*
-- 
2.25.1