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Date: Thu, 3 Sep 2015 12:14:32 -0700 From: "Murat Sezgin" <msezgin@...eaurora.org> To: <netdev@...r.kernel.org> Subject: kernel panic in pppoe_release Hi all, I have already sent this email to linux-ppp group, but I have not received any response yet. So, I want to send it to this group as well, because it is most likely a netdev issue in pppoe kernel driver. I see the bug in the below email discussion on the kernel that we are currently using (3.4.103) with our openwrt distribution. https://www.mail-archive.com/netdev@vger.kernel.org/msg70367.html I did some debug on this and I see that the ref count of the po->pppoe_dev doesnt go to zero before releasing it with dev_put() and set its value to NULL. I also found the below patches from openwrt patch site for 3.18 and 4.0 kernels which can be applicable to our kernel. https://dev.openwrt.org/changeset/45653 But as described in the netdev mail-archive link above, it doesnt solve this issue completely and we still see the crash. I just wonder , if the proposed patch by Denys Fedoryshchenko, which is below, fixes this issue completely. pppox_unbind_sock(sk); +/* Signal the death of the socket. */ +sk->sk_state = PPPOX_DEAD; Do you have a conclusion on this bug? Is it safe to get this patch along with the other workqueue patches? Regards, Murat -- 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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