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Date:   Fri, 11 Sep 2020 12:33:08 -0700
From:   syzbot <>
Subject: Re: INFO: rcu detected stall in ext4_file_write_iter

syzbot suspects this issue was fixed by commit:

commit 7e24969022cbd61ddc586f14824fc205661bb124
Author: Ming Lei <>
Date:   Mon Aug 17 10:00:55 2020 +0000

    block: allow for_each_bvec to support zero len bvec

bisection log:
start commit:   92ed3019 Linux 5.8-rc7
git tree:       upstream
kernel config:
dashboard link:
syz repro:
C reproducer:

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: block: allow for_each_bvec to support zero len bvec

For information about bisection process see:

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