- Dec 22, 2022
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git Conflicts: Drop the drivers/net/amt.c chunk (the AMT driver doesn't exist in Centos Stream). commit 8ebcc62c Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Fri Jul 15 10:17:44 2022 -0700 igmp: Fix data-races around sysctl_igmp_qrv. While reading sysctl_igmp_qrv, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. This test can be packed into a helper, so such changes will be in the follow-up series after net is merged into net-next. qrv ?: READ_ONCE(net->ipv4.sysctl_igmp_qrv); Fixes: a9fe8e29 ("ipv4: implement igmp_qrv sysctl to tune igmp robustness variable") Signed-off-by:
Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Guillaume Nault <gnault@redhat.com>
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git Conflicts: (context) Missing upstream commit db243b79 ("net/ipv4/ipv6: Replace one-element arraya with flexible-array members"): There's no ->gf_slist_flex field in Centos Stream (it's still ->gf_slist). commit 6ae0f2e5 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Fri Jul 15 10:17:43 2022 -0700 igmp: Fix data-races around sysctl_igmp_max_msf. While reading sysctl_igmp_max_msf, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 6305d821 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Fri Jul 15 10:17:42 2022 -0700 igmp: Fix a data-race around sysctl_igmp_max_memberships. While reading sysctl_igmp_max_memberships, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit f6da2267 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Fri Jul 15 10:17:41 2022 -0700 igmp: Fix data-races around sysctl_igmp_llm_reports. While reading sysctl_igmp_llm_reports, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. This test can be packed into a helper, so such changes will be in the follow-up series after net is merged into net-next. if (ipv4_is_local_multicast(pmc->multiaddr) && !READ_ONCE(net->ipv4.sysctl_igmp_llm_reports)) Fixes: df2cf4a7 ("IGMP: Inhibit reports for local multicast groups") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 2a85388f Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:52:05 2022 -0700 tcp: Fix a data-race around sysctl_tcp_probe_interval. While reading sysctl_tcp_probe_interval, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 05cbc0db ("ipv4: Create probe timer for tcp PMTU as per RFC4821") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 92c0aa41 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:52:04 2022 -0700 tcp: Fix a data-race around sysctl_tcp_probe_threshold. While reading sysctl_tcp_probe_threshold, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 6b58e0a5 ("ipv4: Use binary search to choose tcp PMTU probe_size") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 8e92d442 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:52:03 2022 -0700 tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor. While reading sysctl_tcp_mtu_probe_floor, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: c04b79b6 ("tcp: add new tcp_mtu_probe_floor sysctl") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 78eb166c Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:52:02 2022 -0700 tcp: Fix data-races around sysctl_tcp_min_snd_mss. While reading sysctl_tcp_min_snd_mss, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 5f3e2bf0 ("tcp: add tcp_min_snd_mss sysctl") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 88d78bc0 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:52:01 2022 -0700 tcp: Fix data-races around sysctl_tcp_base_mss. While reading sysctl_tcp_base_mss, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 5d424d5a ("[TCP]: MTU probing") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit f47d00e0 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:52:00 2022 -0700 tcp: Fix data-races around sysctl_tcp_mtu_probing. While reading sysctl_tcp_mtu_probing, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 5d424d5a ("[TCP]: MTU probing") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 08a75f10 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:59 2022 -0700 tcp: Fix data-races around sysctl_tcp_l3mdev_accept. While reading sysctl_tcp_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 6dd9a14e ("net: Allow accepted sockets to be bound to l3mdev domain") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 1a0008f9 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:58 2022 -0700 tcp/dccp: Fix a data-race around sysctl_tcp_fwmark_accept. While reading sysctl_tcp_fwmark_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 84f39b08 ("net: support marking accepting TCP sockets") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 85d0b4db Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:57 2022 -0700 ip: Fix a data-race around sysctl_fwmark_reflect. While reading sysctl_fwmark_reflect, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: e110861f ("net: add a sysctl to reflect the fwmark on replies") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 0db23276 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:56 2022 -0700 ip: Fix a data-race around sysctl_ip_autobind_reuse. While reading sysctl_ip_autobind_reuse, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 4b01a967 ("tcp: bind(0) remove the SO_REUSEADDR restriction when ephemeral ports are exhausted.") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 289d3b21 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:55 2022 -0700 ip: Fix data-races around sysctl_ip_nonlocal_bind. While reading sysctl_ip_nonlocal_bind, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 7bf9e18d Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:54 2022 -0700 ip: Fix data-races around sysctl_ip_fwd_update_priority. While reading sysctl_ip_fwd_update_priority, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 432e05d3 ("net: ipv4: Control SKB reprioritization after forwarding") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git Conflicts: (context) Missing upstream commit ac6627a2 ("net: ipv4: Consolidate ipv4_mtu and ip_dst_mtu_maybe_forward"): Centos Stream returns immediately in the if condition. commit 60c158dc Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:53 2022 -0700 ip: Fix data-races around sysctl_ip_fwd_use_pmtu. While reading sysctl_ip_fwd_use_pmtu, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: f87c10a8 ("ipv4: introduce ip_dst_mtu_maybe_forward and protect forwarding path against pmtu spoofing") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 0968d2a4 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:52 2022 -0700 ip: Fix data-races around sysctl_ip_no_pmtu_disc. While reading sysctl_ip_no_pmtu_disc, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git Conflicts: The drivers/net/ethernet/netronome/nfp/flower/action.c chunk was already backported by Centos Stream commit ab569013. commit 8281b7ec Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 13 13:51:51 2022 -0700 ip: Fix data-races around sysctl_ip_default_ttl. While reading sysctl_ip_default_ttl, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit bdf00bf2 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:33 2022 -0700 nexthop: Fix data-races around nexthop_compat_mode. While reading nexthop_compat_mode, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 4f80116d ("net: ipv4: add sysctl for nexthop api compatibility mode") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit e49e4aff Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:32 2022 -0700 ipv4: Fix data-races around sysctl_ip_dynaddr. While reading sysctl_ip_dynaddr, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 12b8d9ca Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:31 2022 -0700 tcp: Fix a data-race around sysctl_tcp_ecn_fallback. While reading sysctl_tcp_ecn_fallback, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 49213555 ("tcp: add rfc3168, section 6.1.1.1. fallback") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 4785a667 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:30 2022 -0700 tcp: Fix data-races around sysctl_tcp_ecn. While reading sysctl_tcp_ecn, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 1dace014 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:29 2022 -0700 raw: Fix a data-race around sysctl_raw_l3mdev_accept. While reading sysctl_raw_l3mdev_accept, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 6897445f ("net: provide a sysctl raw_l3mdev_accept for raw socket lookup with VRFs") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 1ebcb25a Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:28 2022 -0700 icmp: Fix a data-race around sysctl_icmp_ratemask. While reading sysctl_icmp_ratemask, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 2a4eb714 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:27 2022 -0700 icmp: Fix a data-race around sysctl_icmp_ratelimit. While reading sysctl_icmp_ratelimit, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit d2efabce Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:26 2022 -0700 icmp: Fix a data-race around sysctl_icmp_errors_use_inbound_ifaddr. While reading sysctl_icmp_errors_use_inbound_ifaddr, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1c2fb7f9 ("[IPV4]: Sysctl configurable icmp error source address.") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit b04f9b7e Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:25 2022 -0700 icmp: Fix a data-race around sysctl_icmp_ignore_bogus_error_responses. While reading sysctl_icmp_ignore_bogus_error_responses, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 66484bb9 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:24 2022 -0700 icmp: Fix a data-race around sysctl_icmp_echo_ignore_broadcasts. While reading sysctl_icmp_echo_ignore_broadcasts, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 4a2f7083 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:23 2022 -0700 icmp: Fix data-races around sysctl_icmp_echo_enable_probe. While reading sysctl_icmp_echo_enable_probe, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: d329ea5b ("icmp: add response to RFC 8335 PROBE messages") Fixes: 1fd07f33 ("ipv6: ICMPV6: add response to ICMPV6 RFC 8335 PROBE messages") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit bb7bb35a Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:22 2022 -0700 icmp: Fix a data-race around sysctl_icmp_echo_ignore_all. While reading sysctl_icmp_echo_ignore_all, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git Conflicts: Missing upstream commit fbb82952 ("tcp: allocate tcp_death_row outside of struct netns_ipv4"): tw_count hasn't been converted to a refcount in Centos Stream. commit 6f605b57 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:21 2022 -0700 tcp: Fix a data-race around sysctl_max_tw_buckets. While reading sysctl_max_tw_buckets, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 7d1025e5 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:20 2022 -0700 sysctl: Fix data-races in proc_dointvec_ms_jiffies(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_dointvec_ms_jiffies() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_dointvec_ms_jiffies() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 7dee5d77 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Mon Jul 11 17:15:19 2022 -0700 sysctl: Fix data-races in proc_dou8vec_minmax(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_dou8vec_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_dou8vec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side. Fixes: cb944413 ("sysctl: add proc_dou8vec_minmax()") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 73318c4b Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 6 16:40:03 2022 -0700 ipv4: Fix a data-race around sysctl_fib_sync_mem. While reading sysctl_fib_sync_mem, it can be changed concurrently. So, we need to add READ_ONCE() to avoid a data-race. Fixes: 9ab948a9 ("ipv4: Allow amount of dirty memory from fib resizing to be controllable") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 48d7ee32 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 6 16:40:02 2022 -0700 icmp: Fix data-races around sysctl. While reading icmp sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races. Fixes: 4cdf507d ("icmp: add a global rate limitation") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit dd44f04b Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 6 16:40:01 2022 -0700 cipso: Fix data-races around sysctl. While reading cipso sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races. Fixes: 446fda4f ("[NetLabel]: CIPSOv4 engine") Signed-off-by:
Paul Moore <paul@paul-moore.com> Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 3d32edf1 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 6 16:39:59 2022 -0700 inetpeer: Fix data-races around sysctl. While reading inetpeer sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit 47e6ab24 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 6 16:39:58 2022 -0700 tcp: Fix a data-race around sysctl_tcp_max_orphans. While reading sysctl_tcp_max_orphans, it can be changed concurrently. So, we need to add READ_ONCE() to avoid a data-race. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Guillaume Nault authored
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149949 Upstream Status: linux.git commit e8778208 Author: Kuniyuki Iwashima <kuniyu@amazon.com> Date: Wed Jul 6 16:39:57 2022 -0700 sysctl: Fix data races in proc_dointvec_jiffies(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_dointvec_jiffies() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_dointvec_jiffies() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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