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    Subject[PATCH 5.15 875/917] 9p/net: fix missing error check in p9_check_errors
    Date
    From: Dominique Martinet <asmadeus@codewreck.org>

    commit 27eb4c3144f7a5ebef3c9a261d80cb3e1fa784dc upstream.

    Link: https://lkml.kernel.org/r/99338965-d36c-886e-cd0e-1d8fff2b4746@gmail.com
    Reported-by: syzbot+06472778c97ed94af66d@syzkaller.appspotmail.com
    Cc: stable@vger.kernel.org
    Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/9p/client.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/net/9p/client.c
    +++ b/net/9p/client.c
    @@ -541,6 +541,8 @@ static int p9_check_errors(struct p9_cli
    kfree(ename);
    } else {
    err = p9pdu_readf(&req->rc, c->proto_version, "d", &ecode);
    + if (err)
    + goto out_err;
    err = -ecode;

    p9_debug(P9_DEBUG_9P, "<<< RLERROR (%d)\n", -ecode);

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