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>] [day] [month] [year] [list]
Message-Id: <20221013155628.434671-1-chao@kernel.org>
Date:   Thu, 13 Oct 2022 23:56:28 +0800
From:   Chao Yu <chao@...nel.org>
To:     jaegeuk@...nel.org
Cc:     linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, Chao Yu <chao@...nel.org>
Subject: [PATCH] f2fs: fix to invalidate dcc->f2fs_issue_discard in error path

Otherwise, latter f2fs_stop_discard_thread() may access invalid
dcc->f2fs_issue_discard.

Signed-off-by: Chao Yu <chao@...nel.org>
---
 fs/f2fs/segment.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 460048f3c850..cf5f534aa887 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2026,8 +2026,10 @@ int f2fs_start_discard_thread(struct f2fs_sb_info *sbi)
 
 	dcc->f2fs_issue_discard = kthread_run(issue_discard_thread, sbi,
 				"f2fs_discard-%u:%u", MAJOR(dev), MINOR(dev));
-	if (IS_ERR(dcc->f2fs_issue_discard))
+	if (IS_ERR(dcc->f2fs_issue_discard)) {
 		err = PTR_ERR(dcc->f2fs_issue_discard);
+		dcc->f2fs_issue_discard = NULL;
+	}
 
 	return err;
 }
-- 
2.25.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ