Date: Thu, 22 Nov 2018 14:20:32 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 230498] Fatal trap 12: page fault while in kernel mode in sysctl_dumpentry from sysctl NET_RT_DUMP Message-ID: <bug-230498-7501-GqbDhNw8iS@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-230498-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-230498-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D230498 Andrey V. Elsukov <ae@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #199444|0 |1 is obsolete| | --- Comment #17 from Andrey V. Elsukov <ae@FreeBSD.org> --- Created attachment 199449 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D199449&action= =3Dedit Proposed patch I think this patch can be used for both FreeBSD 12 and 11. Use IFNET_RLOCK_NOSLEEP() to protect from interface destroying during routes iteration. In if_detach_internal() mark interface as dying just after we re= move it from the ifnets list. In sysctl_dumpentry() add the check, that interface was not destroyed before doing the access. --=20 You are receiving this mail because: You are the assignee for the bug.=
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