From: Chenyuan Mi <cymi20@fudan.edu.cn> To: unlisted-recipients:; (no To-header on input) Cc: yuanxzhang@fudan.edu.cn, Chenyuan Mi <cymi20@fudan.edu.cn>, Xiyu Yang <xiyuyang19@fudan.edu.cn>, Xin Tan <tanxin.ctf@gmail.com>, Mark Fasheh <mark@fasheh.com>, Joel Becker <jlbec@evilplan.org>, Joseph Qi <joseph.qi@linux.alibaba.com>, ocfs2-devel@oss.oracle.com, linux-kernel@vger.kernel.org Subject: [PATCH v2] ocfs2: Fix handle refcount leak in two exception handling paths Date: Wed, 8 Sep 2021 18:20:55 +0800 [thread overview] Message-ID: <20210908102055.10168-1-cymi20@fudan.edu.cn> (raw) The reference counting issue happens in two exception handling paths of ocfs2_replay_truncate_records(). When executing these two exception handling paths, the function forgets to decrease the refcount of handle increased by ocfs2_start_trans(), causing a refcount leak. Fix this issue by using ocfs2_commit_trans() to decrease the refcount of handle in two handling paths. Signed-off-by: Chenyuan Mi <cymi20@fudan.edu.cn> Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> --- fs/ocfs2/alloc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index f1cc8258d34a..b05fde7edc3a 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -5940,6 +5940,7 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, status = ocfs2_journal_access_di(handle, INODE_CACHE(tl_inode), tl_bh, OCFS2_JOURNAL_ACCESS_WRITE); if (status < 0) { + ocfs2_commit_trans(osb, handle); mlog_errno(status); goto bail; } @@ -5964,6 +5965,7 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, data_alloc_bh, start_blk, num_clusters); if (status < 0) { + ocfs2_commit_trans(osb, handle); mlog_errno(status); goto bail; } -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Chenyuan Mi <cymi20@fudan.edu.cn> Cc: Chenyuan Mi <cymi20@fudan.edu.cn>, Xin Tan <tanxin.ctf@gmail.com>, Xiyu Yang <xiyuyang19@fudan.edu.cn>, yuanxzhang@fudan.edu.cn, linux-kernel@vger.kernel.org, ocfs2-devel@oss.oracle.com Subject: [Ocfs2-devel] [PATCH v2] ocfs2: Fix handle refcount leak in two exception handling paths Date: Wed, 8 Sep 2021 18:20:55 +0800 [thread overview] Message-ID: <20210908102055.10168-1-cymi20@fudan.edu.cn> (raw) The reference counting issue happens in two exception handling paths of ocfs2_replay_truncate_records(). When executing these two exception handling paths, the function forgets to decrease the refcount of handle increased by ocfs2_start_trans(), causing a refcount leak. Fix this issue by using ocfs2_commit_trans() to decrease the refcount of handle in two handling paths. Signed-off-by: Chenyuan Mi <cymi20@fudan.edu.cn> Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> --- fs/ocfs2/alloc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index f1cc8258d34a..b05fde7edc3a 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -5940,6 +5940,7 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, status = ocfs2_journal_access_di(handle, INODE_CACHE(tl_inode), tl_bh, OCFS2_JOURNAL_ACCESS_WRITE); if (status < 0) { + ocfs2_commit_trans(osb, handle); mlog_errno(status); goto bail; } @@ -5964,6 +5965,7 @@ static int ocfs2_replay_truncate_records(struct ocfs2_super *osb, data_alloc_bh, start_blk, num_clusters); if (status < 0) { + ocfs2_commit_trans(osb, handle); mlog_errno(status); goto bail; } -- 2.17.1 _______________________________________________ Ocfs2-devel mailing list Ocfs2-devel@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-devel
next reply other threads:[~2021-09-08 10:21 UTC|newest] Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-08 10:20 Chenyuan Mi [this message] 2021-09-08 10:20 ` [Ocfs2-devel] [PATCH v2] ocfs2: Fix handle refcount leak in two exception handling paths Chenyuan Mi 2021-09-08 10:51 ` Joseph Qi 2021-09-08 10:51 ` [Ocfs2-devel] " Joseph Qi 2021-09-08 17:12 ` Wengang Wang 2021-09-08 17:12 ` Wengang Wang 2021-09-09 11:07 ` Joseph Qi 2021-09-09 11:07 ` Joseph Qi 2021-09-09 17:48 ` Wengang Wang 2021-09-10 1:53 ` Joseph Qi 2021-09-10 1:53 ` Joseph Qi 2021-09-10 17:00 ` Wengang Wang 2021-09-10 17:00 ` Wengang Wang 2021-09-14 2:12 ` Joseph Qi 2021-09-14 2:12 ` Joseph Qi 2021-09-14 3:07 ` Wengang Wang 2021-09-14 3:07 ` Wengang Wang 2021-09-15 2:36 ` Joseph Qi 2021-09-15 2:36 ` Joseph Qi
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