Date: Mon, 20 Jul 2020 21:09:43 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 247647] panic: page fault when opening netmap port (vmxnet3) Message-ID: <bug-247647-7501-1PvOQA0BJo@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-247647-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-247647-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D247647 --- Comment #9 from commit-hook@FreeBSD.org --- A commit references this bug: Author: vmaffione Date: Mon Jul 20 21:08:57 UTC 2020 New revision: 363378 URL: https://svnweb.freebsd.org/changeset/base/363378 Log: iflib: initialize netmap with the correct number of descriptors In case the network device has a RX or TX control queue, the correct number of TX/RX descriptors is contained in the second entry of the isc_ntxd (or isc_nrxd) array, rather than in the first entry. This case is correctly handled by iflib_device_register() and iflib_pseudo_register(), but not by iflib_netmap_attach(). If the first entry is larger than the second, this can result in a panic. This change fixes the bug by introducing two helper functions that also lead to some code simplification. PR: 247647 MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D25541 Changes: head/sys/net/iflib.c --=20 You are receiving this mail because: You are the assignee for the bug.=
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