955387a035
Upstream commit: e3976287b22422787f3cc6fc9adda58304b55bd9 - Handle non-hostname CNAME aliases during name resolution (#2129005) - nscd: Drop local address tuple variable [BZ #29607] - x86-64: Require BMI1/BMI2 for AVX2 strrchr and wcsrchr implementations - x86-64: Require BMI2 and LZCNT for AVX2 memrchr implementation - x86-64: Require BMI2 for AVX2 (raw|w)memchr implementations - x86-64: Require BMI2 for AVX2 wcs(n)cmp implementations - x86-64: Require BMI2 for AVX2 strncmp implementation - x86-64: Require BMI2 for AVX2 strcmp implementation - x86-64: Require BMI2 for AVX2 str(n)casecmp implementations - x86: include BMI1 and BMI2 in x86-64-v3 level - nptl: Add backoff mechanism to spinlock loop - sysdeps: Add 'get_fast_jitter' interace in fast-jitter.h - nptl: Effectively skip CAS in spinlock loop - Move assignment out of the CAS condition - Add LLL_MUTEX_READ_LOCK [BZ #28537] - Avoid extra load with CAS in __pthread_mutex_clocklock_common [BZ #28537] - Avoid extra load with CAS in __pthread_mutex_lock_full [BZ #28537] - resolv: Fix building tst-resolv-invalid-cname for earlier C standards - nss_dns: Rewrite _nss_dns_gethostbyname4_r using current interfaces - resolv: Add new tst-resolv-invalid-cname - nss_dns: In gaih_getanswer_slice, skip strange aliases (bug 12154) (#2129005) - nss_dns: Rewrite getanswer_r to match getanswer_ptr (bug 12154, bug 29305) - nss_dns: Remove remnants of IPv6 address mapping - nss_dns: Rewrite _nss_dns_gethostbyaddr2_r and getanswer_ptr - nss_dns: Split getanswer_ptr from getanswer_r - resolv: Add DNS packet parsing helpers geared towards wire format - resolv: Add internal __ns_name_length_uncompressed function - resolv: Add the __ns_samebinaryname function - resolv: Add internal __res_binary_hnok function - resolv: Add tst-resolv-aliases - resolv: Add tst-resolv-byaddr for testing reverse lookup - gconv: Use 64-bit interfaces in gconv_parseconfdir (bug 29583) - elf: Fix hwcaps string size overestimation - nscd: Fix netlink cache invalidation if epoll is used [BZ #29415] - Apply asm redirections in wchar.h before first use - Apply asm redirections in stdio.h before first use [BZ #27087] - elf: Call __libc_early_init for reused namespaces (bug 29528) Reviewed-by: Florian Weimer <fweimer@redhat.com>
41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
commit 2b3d020055bea4fbbfc0ca2362d46038487c6dfd
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Author: Fabian Vogt <fvogt@suse.de>
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Date: Wed Jul 27 11:44:07 2022 +0200
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nscd: Fix netlink cache invalidation if epoll is used [BZ #29415]
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Processes cache network interface information such as whether IPv4 or IPv6
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are enabled. This is only checked again if the "netlink timestamp" provided
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by nscd changed, which is triggered by netlink socket activity.
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However, in the epoll handler for the netlink socket, it was missed to
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assign the new timestamp to the nscd database. The handler for plain poll
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did that properly, copy that over.
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This bug caused that e.g. processes which started before network
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configuration got unusuable addresses from getaddrinfo, like IPv6 only even
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though only IPv4 is available:
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https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1041
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It's a bit hard to reproduce, so I verified this by checking the timestamp
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on calls to __check_pf manually. Without this patch it's stuck at 1, now
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it's increasing on network changes as expected.
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Signed-off-by: Fabian Vogt <fvogt@suse.de>
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(cherry picked from commit 02ca25fef2785974011e9c5beecc99b900b69fd7)
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diff --git a/nscd/connections.c b/nscd/connections.c
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index 3f0bda4e97edb9df..bc941715cff47c49 100644
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--- a/nscd/connections.c
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+++ b/nscd/connections.c
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@@ -2285,7 +2285,8 @@ main_loop_epoll (int efd)
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sizeof (buf))) != -1)
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;
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- __bump_nl_timestamp ();
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+ dbs[hstdb].head->extra_data[NSCD_HST_IDX_CONF_TIMESTAMP]
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+ = __bump_nl_timestamp ();
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}
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# endif
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else
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