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Message-ID: <000000000000847e34061bd48823@google.com>
Date: Wed, 26 Jun 2024 17:51:37 -0700
From: syzbot <syzbot+eda89a33c5856f66f823@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [jfs?] INFO: task hung in txBegin
For archival purposes, forwarding an incoming command email to
linux-kernel@...r.kernel.org.
***
Subject: Re: [syzbot] [jfs?] INFO: task hung in txBegin
Author: lizhi.xu@...driver.com
#syz test: upstream 50736169ecc8
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 92a5b8283528..0209ebe97e7f 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2123,10 +2123,12 @@ static long wb_writeback(struct bdi_writeback *wb,
queue_io(wb, work, dirtied_before);
queued = true;
}
+ down_write(&work->sb->s_umount);
if (work->sb)
progress = writeback_sb_inodes(work->sb, wb, work);
else
progress = __writeback_inodes_wb(wb, work);
+ up_write(&work->sb->s_umount);
trace_writeback_written(wb, work);
/*
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