3.16.84-rc1 review patch. If anyone has any objections, please let me know.
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From: "zhangyi (F)" yi.zhang@huawei.com
commit 51f57b01e4a3c7d7bdceffd84de35144e8c538e7 upstream.
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: Ben Hutchings ben@decadent.org.uk --- fs/jbd2/checkpoint.c | 2 +- fs/jbd2/journal.c | 15 ++++----------- 2 files changed, 5 insertions(+), 12 deletions(-)
--- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -173,7 +173,7 @@ void __jbd2_log_wait_for_space(journal_t "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 { --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -2106,12 +2106,10 @@ static void __journal_abort_soft (journa
__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); }
/** @@ -2153,11 +2151,6 @@ static void __journal_abort_soft (journa * 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)