Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
net: Add net_cookie to Dead loop messages
Network devices can have the same name within different network namespaces.
To help distinguish these devices, add the net_cookie value which can be
used to identify the netns.
Signed-off-by: Chris J Arges <carges@cloudflare.com>
Link: https://patch.msgid.link/20260408191056.1036330-1-carges@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
authored by
Chris J Arges
and committed by
Jakub Kicinski
b258cba1
cea470a6
+5
-4
+3
-2
net/core/dev.c
+3
-2
net/core/dev.c
···
4894
4894
} else {
4895
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/* Recursion is detected! It is possible unfortunately. */
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recursion_alert:
4897
-
net_crit_ratelimited("Dead loop on virtual device %s, fix it urgently!\n",
4898
-
dev->name);
4897
+
net_crit_ratelimited("Dead loop on virtual device %s (net %llu), fix it urgently!\n",
4898
+
dev->name, dev_net(dev)->net_cookie);
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+
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4900
rc = -ENETDOWN;
4900
4901
}
4901
4902
+2
-2
net/ipv4/ip_tunnel_core.c
+2
-2
net/ipv4/ip_tunnel_core.c
···
60
60
61
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if (unlikely(dev_recursion_level() > IP_TUNNEL_RECURSION_LIMIT)) {
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if (dev) {
63
-
net_crit_ratelimited("Dead loop on virtual device %s, fix it urgently!\n",
64
-
dev->name);
63
+
net_crit_ratelimited("Dead loop on virtual device %s (net %llu), fix it urgently!\n",
64
+
dev->name, dev_net(dev)->net_cookie);
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65
DEV_STATS_INC(dev, tx_errors);
66
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}
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ip_rt_put(rt);