On Sat, 11 Jun 2022 21:04:26 +0800, Zhang Yi wrote:
> We catch an assert problem in jbd2_journal_commit_transaction() when
> doing fsstress and request falut injection tests. The problem is
> happened in a race condition between jbd2_journal_commit_transaction()
> and ext4_end_io_end(). Firstly, ext4_writepages() writeback dirty pages
> and start reserved handle, and then the journal was aborted due to some
> previous metadata IO error, jbd2_journal_abort() start to commit current
> running transaction, the committing procedure could be raced by
> ext4_end_io_end() and lead to subtract j_reserved_credits twice from
> commit_transaction->t_outstanding_credits, finally the
> t_outstanding_credits is mistakenly smaller than t_nr_buffers and
> trigger assert.
>
> [...]
Applied, thanks!
[1/1] jbd2: fix outstanding credits assert in jbd2_journal_commit_transaction()
commit: f8dc286e4d942dab79d1814e0708ac91052a34fa
Best regards,
--
Theodore Ts'o <tytso@xxxxxxx>
