From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "zhangyi (F)" <yi.zhang@huawei.com>, Jan Kara <jack@suse.cz>,
Theodore Ts'o <tytso@mit.edu>, Sasha Levin <sashal@kernel.org>,
linux-ext4@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 091/459] ext4, jbd2: ensure panic when aborting with zero errno
Date: Fri, 14 Feb 2020 10:55:41 -0500 [thread overview]
Message-ID: <20200214160149.11681-91-sashal@kernel.org> (raw)
In-Reply-To: <20200214160149.11681-1-sashal@kernel.org>
From: "zhangyi (F)" <yi.zhang@huawei.com>
[ Upstream commit 51f57b01e4a3c7d7bdceffd84de35144e8c538e7 ]
JBD2_REC_ERR flag used to indicate the errno has been updated when jbd2
aborted, and then __ext4_abort() and ext4_handle_error() can invoke
panic if ERRORS_PANIC is specified. But if the journal has been aborted
with zero errno, jbd2_journal_abort() didn't set this flag so we can
no longer panic. Fix this by always record the proper errno in the
journal superblock.
Fixes: 4327ba52afd03 ("ext4, jbd2: ensure entering into panic after recording an error in superblock")
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20191204124614.45424-3-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/jbd2/checkpoint.c | 2 +-
fs/jbd2/journal.c | 15 ++++-----------
2 files changed, 5 insertions(+), 12 deletions(-)
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index a1909066bde66..62cf497f18eb4 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -164,7 +164,7 @@ void __jbd2_log_wait_for_space(journal_t *journal)
"journal space in %s\n", __func__,
journal->j_devname);
WARN_ON(1);
- jbd2_journal_abort(journal, 0);
+ jbd2_journal_abort(journal, -EIO);
}
write_lock(&journal->j_state_lock);
} else {
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 389c9be4e7919..65e78d3a2f64c 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -2123,12 +2123,10 @@ static void __journal_abort_soft (journal_t *journal, int errno)
__jbd2_journal_abort_hard(journal);
- if (errno) {
- jbd2_journal_update_sb_errno(journal);
- write_lock(&journal->j_state_lock);
- journal->j_flags |= JBD2_REC_ERR;
- write_unlock(&journal->j_state_lock);
- }
+ jbd2_journal_update_sb_errno(journal);
+ write_lock(&journal->j_state_lock);
+ journal->j_flags |= JBD2_REC_ERR;
+ write_unlock(&journal->j_state_lock);
}
/**
@@ -2170,11 +2168,6 @@ static void __journal_abort_soft (journal_t *journal, int errno)
* failure to disk. ext3_error, for example, now uses this
* functionality.
*
- * Errors which originate from within the journaling layer will NOT
- * supply an errno; a null errno implies that absolutely no further
- * writes are done to the journal (unless there are any already in
- * progress).
- *
*/
void jbd2_journal_abort(journal_t *journal, int errno)
--
2.20.1
next prev parent reply other threads:[~2020-02-14 17:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200214160149.11681-1-sashal@kernel.org>
2020-02-14 15:54 ` [PATCH AUTOSEL 5.4 026/459] ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT Sasha Levin
2020-02-14 15:55 ` [PATCH AUTOSEL 5.4 073/459] jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal Sasha Levin
2020-02-14 15:55 ` [PATCH AUTOSEL 5.4 074/459] ext4: fix deadlock allocating bio_post_read_ctx from mempool Sasha Levin
2020-02-14 15:55 ` Sasha Levin [this message]
2020-02-14 16:00 ` [PATCH AUTOSEL 5.4 398/459] jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record Sasha Levin
2020-02-14 16:00 ` [PATCH AUTOSEL 5.4 399/459] jbd2: make sure ESHUTDOWN to be recorded in the journal superblock Sasha Levin
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