forked from rpms/glibc
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
commit 2b3d020055bea4fbbfc0ca2362d46038487c6dfd
|
|
Author: Fabian Vogt <fvogt@suse.de>
|
|
Date: Wed Jul 27 11:44:07 2022 +0200
|
|
|
|
nscd: Fix netlink cache invalidation if epoll is used [BZ #29415]
|
|
|
|
Processes cache network interface information such as whether IPv4 or IPv6
|
|
are enabled. This is only checked again if the "netlink timestamp" provided
|
|
by nscd changed, which is triggered by netlink socket activity.
|
|
|
|
However, in the epoll handler for the netlink socket, it was missed to
|
|
assign the new timestamp to the nscd database. The handler for plain poll
|
|
did that properly, copy that over.
|
|
|
|
This bug caused that e.g. processes which started before network
|
|
configuration got unusuable addresses from getaddrinfo, like IPv6 only even
|
|
though only IPv4 is available:
|
|
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1041
|
|
|
|
It's a bit hard to reproduce, so I verified this by checking the timestamp
|
|
on calls to __check_pf manually. Without this patch it's stuck at 1, now
|
|
it's increasing on network changes as expected.
|
|
|
|
Signed-off-by: Fabian Vogt <fvogt@suse.de>
|
|
(cherry picked from commit 02ca25fef2785974011e9c5beecc99b900b69fd7)
|
|
|
|
diff --git a/nscd/connections.c b/nscd/connections.c
|
|
index 3f0bda4e97edb9df..bc941715cff47c49 100644
|
|
--- a/nscd/connections.c
|
|
+++ b/nscd/connections.c
|
|
@@ -2285,7 +2285,8 @@ main_loop_epoll (int efd)
|
|
sizeof (buf))) != -1)
|
|
;
|
|
|
|
- __bump_nl_timestamp ();
|
|
+ dbs[hstdb].head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP]
|
|
+ = __bump_nl_timestamp ();
|
|
}
|
|
# endif
|
|
else
|