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Date: Fri, 31 Dec 2021 15:43:10 +0800 From: zhanchengbin <zhanchengbin1@...wei.com> To: Theodore Ts'o <tytso@....edu> CC: <linux-ext4@...r.kernel.org>, <liuzhiqiang26@...wei.com>, <linfeilong@...wei.com>, <wubo40@...wei.com> Subject: [PATCH v2 5/6] e2fsck: check whether ldesc is null before accessing, it in end_problem_latch() In end_problem_latch(), ldesc need check not NULL before dereference. Signed-off-by: zhanchengbin <zhanchengbin1@...wei.com> --- e2fsck/problem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/e2fsck/problem.c b/e2fsck/problem.c index f454dcb7..fd814f9e 100644 --- a/e2fsck/problem.c +++ b/e2fsck/problem.c @@ -2394,6 +2394,8 @@ int end_problem_latch(e2fsck_t ctx, int mask) int answer = -1; ldesc = find_latch(mask); + if (!ldesc) + return answer; if (ldesc->end_message && (ldesc->flags & PRL_LATCHED)) { clear_problem_context(&pctx); answer = fix_problem(ctx, ldesc->end_message, &pctx); -- 2.27.0
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