For btrfs_scrubparity_helper() the ->func() is set to
scrub_parity_bio_endio_worker(). This functions invokes
scrub_free_parity() which kfrees() the `work' object. All is good as
long as trace events are not enabled because we boom with a backtrace
like this:
| Workqueue: btrfs-endio btrfs_endio_helper
| RIP: 0010:[<ffffffff812f81ae>] [<ffffffff812f81ae>]
trace_event_raw_event_btrfs__work__done+0x4e/0xa0
| Call Trace:
| [<ffffffff8136497d>] btrfs_scrubparity_helper+0x59d/0x780
| [<ffffffff81364c49>] btrfs_endio_helper+0x9/0x10
| [<ffffffff8108af8e>] process_one_work+0x26e/0x7b0
| [<ffffffff8108b516>] worker_thread+0x46/0x560
| [<ffffffff81091c4e>] kthread+0xee/0x110
| [<ffffffff818e166a>] ret_from_fork+0x2a/0x40
So in order to avoid this, I remove the trace point.
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
fs/btrfs/async-thread.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index e0f071f6b5a7..d0dfc3d2e199 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -318,8 +318,6 @@ static void normal_work_helper(struct btrfs_work *work)
set_bit(WORK_DONE_BIT, &work->flags);
run_ordered_work(wq);
}
- if (!need_order)
- trace_btrfs_all_work_done(work);
}
void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t uniq_func,
--
2.11.0
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
