Date: Tue, 01 Dec 2020 16:24:31 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 250870] vnet jail with samba can take down my node Message-ID: <bug-250870-7501-Gdi9viogzw@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-250870-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-250870-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D250870 --- Comment #3 from commit-hook@FreeBSD.org --- A commit references this bug: Author: kp Date: Tue Dec 1 16:24:00 UTC 2020 New revision: 368237 URL: https://svnweb.freebsd.org/changeset/base/368237 Log: if: Fix panic when destroying vnet and epair simultaneously When destroying a vnet and an epair (with one end in the vnet) we often panicked. This was the result of the destruction of the epair, which dest= roys both ends simultaneously, happening while vnet_if_return() was moving the struct ifnet to its home vnet. This can result in a freed ifnet being re-added to the home vnet V_ifnet list. That in turn panics the next time the ifne= t is used. Prevent this race by ensuring that vnet_if_return() cannot run at the same time as if_detach() or epair_clone_destroy(). PR: 238870, 234985, 244703, 250870 MFC after: 2 weeks Sponsored by: Modirum MDPay Differential Revision: https://reviews.freebsd.org/D27378 Changes: head/sys/net/if.c --=20 You are receiving this mail because: You are the assignee for the bug.=
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