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File _service:tar_scm:backport-network-fix-handling-of-network-interface-renaming.patch of Package systemd
From 6ee3390c978dca7a590a4c16d4d620984e60fa96 Mon Sep 17 00:00:00 2001 From: Yu Watanabe <watanabe.yu+github@gmail.com> Date: Fri, 10 Sep 2021 08:09:56 +0900 Subject: [PATCH] network: fix handling of network interface renaming Fixes #20657. (cherry picked from commit 160203e974945ce520fe8f569458634ef898c61c) Conflict:NA Reference:https://github.com/systemd/systemd/commit/6ee3390c978dca7a590a4c16d4d620984e60fa96 --- src/network/networkd-link.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index d58b700050..20675f2306 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -1404,17 +1404,21 @@ static int link_initialized(Link *link, sd_device *device) { assert(link); assert(device); - if (link->state != LINK_STATE_PENDING) - return 0; + /* Always replace with the new sd_device object. As the sysname (and possibly other properties + * or sysattrs) may be outdated. */ + sd_device_ref(device); + sd_device_unref(link->sd_device); + link->sd_device = device; - if (link->sd_device) + /* Do not ignore unamanaged state case here. If an interface is renamed after being once + * configured, and the corresponding .network file has Name= in [Match] section, then the + * interface may be already in unmanaged state. See #20657. */ + if (!IN_SET(link->state, LINK_STATE_PENDING, LINK_STATE_UNMANAGED)) return 0; log_link_debug(link, "udev initialized link"); link_set_state(link, LINK_STATE_INITIALIZED); - link->sd_device = sd_device_ref(device); - /* udev has initialized the link, but we don't know if we have yet * processed the NEWLINK messages with the latest state. Do a GETLINK, * when it returns we know that the pending NEWLINKs have already been -- 2.33.0
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