Messages in this thread | | | Subject | Re: [PATCH v2] 9p/trans_fd: Fix concurrency del of req_list in p9_fd_cancelled/p9_read_work | From | "wanghai (M)" <> | Date | Fri, 12 Jun 2020 17:22:50 +0800 |
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在 2020/6/12 17:10, Dominique Martinet 写道: > Wang Hai wrote on Fri, Jun 12, 2020: >> p9_read_work and p9_fd_cancelled may be called concurrently. >> In some cases, req->req_list may be deleted by both p9_read_work >> and p9_fd_cancelled. >> >> We can fix it by ignoring replies associated with a cancelled >> request and ignoring cancelled request if message has been received >> before lock. >> >> Fixes: 60ff779c4abb ("9p: client: remove unused code and any reference to "cancelled" function") >> Reported-by: syzbot+77a25acfa0382e06ab23@syzkaller.appspotmail.com >> Signed-off-by: Wang Hai <wanghai38@huawei.com> > Thanks! looks good to me, I'll queue for 5.9 as well unless you're in a > hurry. Ok, thanks.
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