From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
To: syzbot <syzbot+e65df5e4d866512cd91d@syzkaller.appspotmail.com>,
syzkaller-bugs@googlegroups.com
Cc: akpm@linux-foundation.org, gregkh@linuxfoundation.org,
hannes@cmpxchg.org, kirill.shutemov@linux.intel.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
mhocko@suse.com, rientjes@google.com, shli@fb.com,
sj38.park@gmail.com, willy@infradead.org, yang.s@alibaba-inc.com
Subject: Re: INFO: task hung in collapse_huge_page
Date: Mon, 11 Jun 2018 19:56:34 +0900 [thread overview]
Message-ID: <e76ea707-b127-5071-4bcf-2ac472b0d106@I-love.SAKURA.ne.jp> (raw)
In-Reply-To: <000000000000a6d200056b14bfd4@google.com>
khugepaged is trying to hold mm->mmap_sem for write, which is held
for read by a thread which is stuck at __sb_start_write(). Therefore,
#syz dup: INFO: task hung in __sb_start_write
prev parent reply other threads:[~2018-06-11 10:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-30 18:09 syzbot
2018-06-11 10:56 ` Tetsuo Handa [this message]
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