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Date: Mon, 04 Mar 2013 06:56:15 -0800 From: Eric Dumazet <eric.dumazet@...il.com> To: Cong Wang <amwang@...hat.com> Cc: netdev@...r.kernel.org, bugs@...m.in, David Ward <david.ward@...mit.edu>, Stephen Hemminger <stephen@...workplumber.org>, "David S. Miller" <davem@...emloft.net> Subject: Re: [Patch net] garp: fix a NULL pointer dereference bug On Mon, 2013-03-04 at 17:55 +0800, Cong Wang wrote: > On Sun, 2013-03-03 at 21:26 -0800, Eric Dumazet wrote: > > > > Nope this patch doesnt solve the problem > > > > Crash is in : > > > > 49 8b 1c c6 mov (%r14,%rax,8),%rbx > > > > Thats because r14 (port) is NULL > > > > > > > > Hmm, but I can't see how it can be NULL, the only place of NULL'ing it > is inside garp_release_port(), right after the piece of code that I > patched. > > Thanks! > Maybe port is NULL from the beginning. Try to inject memory allocations error in garp_init_port() -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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