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9p/net: fix missing error check in p9_check_errors

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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>
This commit is contained in:
Dominique Martinet 2021-11-02 19:47:47 +09:00 committed by Greg Kroah-Hartman
parent a8cdf34ff8
commit 32246cefb9
1 changed files with 2 additions and 0 deletions
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2
net/9p/client.c
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@ -538,6 +538,8 @@ static int p9_check_errors(struct p9_client *c, struct p9_req_t *req)
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);