Date: Mon, 9 Jun 1997 16:14:17 +1000 From: Bruce Evans <bde@zeta.org.au> To: freebsd-hackers@FreeBSD.ORG, lenzi@bsi.com.br Subject: Re: pppd & natd problem turnaround.. Message-ID: <199706090614.QAA06988@godzilla.zeta.org.au>
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>I have seen some messages dealing with pppd & natd panicing FreeBSD 2.2 >systems. > >The problem arises when a negative m->m_len value is reveived in function >pppfcs in module sys/net/ppp_tty.c ISTR this bug from a few years ago. The fix may have been to fix splimp() to prevent a race. 2.2 has a similar bug in splimp(). It only occurs when neither pppd nor slip is configured in the kernel and the pppd LKM is used. Do you have this configuration? >A turnaround is to replace m_len to ZERO whenever is less then zero. > >I know it is not the best, but it works for now. Better find the real bug. m->m_len < 0 "can't happen". Bruce
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