- 26 Jul, 2022 8 commits
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Tetsuo Handa authored
lockdep complains use of uninitialized spinlock at ieee80211_do_stop() [1], for commit f856373e ("wifi: mac80211: do not wake queues on a vif that is being stopped") guards clear_bit() using fq.lock even before fq_init() from ieee80211_txq_setup_flows() initializes this spinlock. According to discussion [2], Toke was not happy with expanding usage of fq.lock. Since __ieee80211_wake_txqs() is called under RCU read lock, we can instead use synchronize_rcu() for flushing ieee80211_wake_txqs(). Link: https://syzkaller.appspot.com/bug?extid=eceab52db7c4b961e9d6 [1] Link: https://lkml.kernel.org/r/874k0zowh2.fsf@toke.dk [2] Reported-by:
syzbot <syzbot+eceab52db7c4b961e9d6@syzkaller.appspotmail.com> Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Fixes: f856373e ("wifi: mac80211: do not wake queues on a vif that is being stopped") Tested-by:
Toke Høiland-Jørgensen <toke@kernel.org> Signed-off-by:
Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/9cc9b81d-75a3-3925-b612-9d0ad3cab82b@I-love.SAKURA.ne.jp [ pick up commit 3598cb6e ("wifi: mac80211: do not abuse fq.lock in ieee80211_do_stop()") from -next] Link: https://lore.kernel.org/all/87o7xcq6qt.fsf@kernel.org/Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
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Benjamin Poirier authored
After commit b6c02ef5 ("bridge: Netlink interface fix."), br_fill_ifinfo() started to send an empty IFLA_AF_SPEC attribute when a bridge vlan dump is requested but an interface does not have any vlans configured. iproute2 ignores such an empty attribute since commit b262a9becbcb ("bridge: Fix output with empty vlan lists") but older iproute2 versions as well as other utilities have their output changed by the cited kernel commit, resulting in failed test cases. Regardless, emitting an empty attribute is pointless and inefficient. Avoid this change by canceling the attribute if no AF_SPEC data was added. Fixes: b6c02ef5 ("bridge: Netlink interface fix.") Reviewed-by:
Ido Schimmel <idosch@nvidia.com> Signed-off-by:
Benjamin Poirier <bpoirier@nvidia.com> Acked-by:
Nikolay Aleksandrov <razor@blackwall.org> Link: https://lore.kernel.org/r/20220725001236.95062-1-bpoirier@nvidia.comSigned-off-by:
Paolo Abeni <pabeni@redhat.com>
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Paolo Abeni authored
Subbaraya Sundeep says: ==================== Octeontx2 minor tc fixes This patch set fixes two problems found in tc code wrt to ratelimiting and when installing UDP/TCP filters. Patch 1: CN10K has different register format compared to CN9xx hence fixes that. Patch 2: Check flow mask also before installing a src/dst port filter, otherwise installing for one port installs for other one too. ==================== Link: https://lore.kernel.org/r/1658650874-16459-1-git-send-email-sbhatta@marvell.comSigned-off-by:
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Subbaraya Sundeep authored
Check the mask for non-zero value before installing tc filters for L4 source and destination ports. Otherwise installing a filter for source port installs destination port too and vice-versa. Fixes: 1d4d9e42 ("octeontx2-pf: Add tc flower hardware offload on ingress traffic") Signed-off-by:
Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by:
Sunil Goutham <sgoutham@marvell.com> Signed-off-by:
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Sunil Goutham authored
NIX_AF_TLXX_PIR/CIR register format has changed from OcteonTx2 to CN10K. CN10K supports larger burst size. Fix burst exponent and burst mantissa configuration for CN10K. Also fixed 'maxrate' from u32 to u64 since 'police.rate_bytes_ps' passed by stack is also u64. Fixes: e638a83f ("octeontx2-pf: TC_MATCHALL egress ratelimiting offload") Signed-off-by:
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Duoming Zhou authored
There are sleep in atomic context bugs in timer handlers of sctp such as sctp_generate_t3_rtx_event(), sctp_generate_probe_event(), sctp_generate_t1_init_event(), sctp_generate_timeout_event(), sctp_generate_t3_rtx_event() and so on. The root cause is sctp_sched_prio_init_sid() with GFP_KERNEL parameter that may sleep could be called by different timer handlers which is in interrupt context. One of the call paths that could trigger bug is shown below: (interrupt context) sctp_generate_probe_event sctp_do_sm sctp_side_effects sctp_cmd_interpreter sctp_outq_teardown sctp_outq_init sctp_sched_set_sched n->init_sid(..,GFP_KERNEL) sctp_sched_prio_init_sid //may sleep This patch changes gfp_t parameter of init_sid in sctp_sched_set_sched() from GFP_KERNEL to GFP_ATOMIC in order to prevent sleep in atomic context bugs. Fixes: 5bbbbe32 ("sctp: introduce stream scheduler foundations") Signed-off-by:Duoming Zhou <duoming@zju.edu.cn> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Link: https://lore.kernel.org/r/20220723015809.11553-1-duoming@zju.edu.cnSigned-off-by:
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Vladimir Oltean authored
Due to an invalid conflict resolution on my side while working on 2 different series (LAG FDBs and FDB isolation), dsa_switch_do_lag_fdb_add() does not store the database associated with a dsa_mac_addr structure. So after adding an FDB entry associated with a LAG, dsa_mac_addr_find() fails to find it while deleting it, because &a->db is zeroized memory for all stored FDB entries of lag->fdbs, and dsa_switch_do_lag_fdb_del() returns -ENOENT rather than deleting the entry. Fixes: c2693363 ("net: dsa: request drivers to perform FDB isolation") Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20220723012411.1125066-1-vladimir.oltean@nxp.comSigned-off-by:
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Michal Maloszewski authored
Fix the inability to bring an interface up on a setup with only MSI interrupts enabled (no MSI-X). Solution is to add a default number of QPs = 1. This is enough, since without MSI-X support driver enables only a basic feature set. Fixes: bc6d33c8 ("i40e: Fix the number of queues available to be mapped for use") Signed-off-by:
Dawid Lukwinski <dawid.lukwinski@intel.com> Signed-off-by:
Michal Maloszewski <michal.maloszewski@intel.com> Tested-by:
Dave Switzer <david.switzer@intel.com> Signed-off-by:
Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://lore.kernel.org/r/20220722175401.112572-1-anthony.l.nguyen@intel.comSigned-off-by:
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- 25 Jul, 2022 18 commits
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David S. Miller authored
Kuniyuki Iwashima says: ==================== sysctl: Fix data-races around ipv4_net_table (Round 6, Final). This series fixes data-races around 11 knobs after tcp_pacing_ss_ratio ipv4_net_table, and this is the final round for ipv4_net_table. While at it, other data-races around these related knobs are fixed. - decnet_mem - decnet_rmem - tipc_rmem There are still 58 tables possibly missing some fixes under net/. $ grep -rnE "struct ctl_table.*?\[\] =" net/ | wc -l 60 ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Kuniyuki Iwashima authored
While reading sysctl_fib_notify_on_flag_change, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: 680aea08 ("net: ipv4: Emit notification when fib hardware flags are changed") Signed-off-by:
Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_reflect_tos, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. Fixes: ac8f1710 ("tcp: reflect tos value received in SYN to the socket") Signed-off-by:
Wei Wang <weiwan@google.com> Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_comp_sack_nr, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 9c21d2fc ("tcp: add tcp_comp_sack_nr sysctl") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_comp_sack_slack_ns, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: a70437cc ("tcp: add hrtimer slack to sack compression") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_comp_sack_delay_ns, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 6d82aa24 ("tcp: add tcp_comp_sack_delay_ns sysctl") Signed-off-by:
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Kuniyuki Iwashima authored
While reading these sysctl variables, they can be changed concurrently. Thus, we need to add READ_ONCE() to their readers. - .sysctl_rmem - .sysctl_rwmem - .sysctl_rmem_offset - .sysctl_wmem_offset - sysctl_tcp_rmem[1, 2] - sysctl_tcp_wmem[1, 2] - sysctl_decnet_rmem[1] - sysctl_decnet_wmem[1] - sysctl_tipc_rmem[1] Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_pacing_(ss|ca)_ratio, they can be changed concurrently. Thus, we need to add READ_ONCE() to their readers. Fixes: 43e122b0 ("tcp: refine pacing rate determination") Signed-off-by:
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Taehee Yoo authored
mld_{query | report}_work() processes queued events. If there are too many events in the queue, it re-queue a work. And then, it returns without in6_dev_put(). But if queuing is failed, it should call in6_dev_put(), but it doesn't. So, a reference count leak would occur. THREAD0 THREAD1 mld_report_work() spin_lock_bh() if (!mod_delayed_work()) in6_dev_hold(); spin_unlock_bh() spin_lock_bh() schedule_delayed_work() spin_unlock_bh() Script to reproduce(by Hangbin Liu): ip netns add ns1 ip netns add ns2 ip netns exec ns1 sysctl -w net.ipv6.conf.all.force_mld_version=1 ip netns exec ns2 sysctl -w net.ipv6.conf.all.force_mld_version=1 ip -n ns1 link add veth0 type veth peer name veth0 netns ns2 ip -n ns1 link set veth0 up ip -n ns2 link set veth0 up for i in `seq 50`; do for j in `seq 100`; do ip -n ns1 addr add 2021:${i}::${j}/64 dev veth0 ip -n ns2 addr add 2022:${i}::${j}/64 dev veth0 done done modprobe -r veth ip -a netns del splat looks like: unregister_netdevice: waiting for veth0 to become free. Usage count = 2 leaked reference. ipv6_add_dev+0x324/0xec0 addrconf_notify+0x481/0xd10 raw_notifier_call_chain+0xe3/0x120 call_netdevice_notifiers+0x106/0x160 register_netdevice+0x114c/0x16b0 veth_newlink+0x48b/0xa50 [veth] rtnl_newlink+0x11a2/0x1a40 rtnetlink_rcv_msg+0x63f/0xc00 netlink_rcv_skb+0x1df/0x3e0 netlink_unicast+0x5de/0x850 netlink_sendmsg+0x6c9/0xa90 ____sys_sendmsg+0x76a/0x780 __sys_sendmsg+0x27c/0x340 do_syscall_64+0x43/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd Tested-by:Hangbin Liu <liuhangbin@gmail.com> Fixes: f185de28 ("mld: add new workqueues for process mld events") Signed-off-by:
Taehee Yoo <ap420073@gmail.com> Reviewed-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Jianglei Nie authored
init_rx_sa() allocates relevant resource for rx_sa->stats and rx_sa-> key.tfm with alloc_percpu() and macsec_alloc_tfm(). When some error occurs after init_rx_sa() is called in macsec_add_rxsa(), the function released rx_sa with kfree() without releasing rx_sa->stats and rx_sa-> key.tfm, which will lead to a resource leak. We should call macsec_rxsa_put() instead of kfree() to decrease the ref count of rx_sa and release the relevant resource if the refcount is 0. The same bug exists in macsec_add_txsa() for tx_sa as well. This patch fixes the above two bugs. Fixes: 3cf3227a ("net: macsec: hardware offloading infrastructure") Signed-off-by:
Jianglei Nie <niejianglei2021@163.com> Signed-off-by:
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David S. Miller authored
Sabrina Dubroca says: ==================== macsec: fix config issues The patch adding netlink support for XPN (commit 48ef50fa ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)")) introduced several issues, including a kernel panic reported at [1]. Reproducing those bugs with upstream iproute is limited, since iproute doesn't currently support XPN. I'm also working on this. [1] https://bugzilla.kernel.org/show_bug.cgi?id=208315 ==================== Signed-off-by:
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Sabrina Dubroca authored
Currently, MACSEC_SA_ATTR_PN is handled inconsistently, sometimes as a u32, sometimes forced into a u64 without checking the actual length of the attribute. Instead, we can use nla_get_u64 everywhere, which will read up to 64 bits into a u64, capped by the actual length of the attribute coming from userspace. This fixes several issues: - the check in validate_add_rxsa doesn't work with 32-bit attributes - the checks in validate_add_txsa and validate_upd_sa incorrectly reject X << 32 (with X != 0) Fixes: 48ef50fa ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)") Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
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Sabrina Dubroca authored
IEEE 802.1AEbw-2013 (section 10.7.8) specifies that the maximum value of the replay window is 2^30-1, to help with recovery of the upper bits of the PN. To avoid leaving the existing macsec device in an inconsistent state if this test fails during changelink, reuse the cleanup mechanism introduced for HW offload. This wasn't needed until now because macsec_changelink_common could not fail during changelink, as modifying the cipher suite was not allowed. Finally, this must happen after handling IFLA_MACSEC_CIPHER_SUITE so that secy->xpn is set. Fixes: 48ef50fa ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)") Signed-off-by:
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Sabrina Dubroca authored
The expected length is MACSEC_SALT_LEN, not MACSEC_SA_ATTR_SALT. Fixes: 48ef50fa ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)") Signed-off-by:
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Sabrina Dubroca authored
Commit 48ef50fa added a test on tb_sa[MACSEC_SA_ATTR_PN], but nothing guarantees that it's not NULL at this point. The same code was added to macsec_add_txsa, but there it's not a problem because validate_add_txsa checks that the MACSEC_SA_ATTR_PN attribute is present. Note: it's not possible to reproduce with iproute, because iproute doesn't allow creating an SA without specifying the PN. Fixes: 48ef50fa ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)") Link: https://bugzilla.kernel.org/show_bug.cgi?id=208315Reported-by:
Frantisek Sumsal <fsumsal@redhat.com> Signed-off-by:
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Slark Xiao authored
Replace 'the the' with 'the' in the comment. Signed-off-by:
Slark Xiao <slark_xiao@163.com> Signed-off-by:
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Slark Xiao authored
Replace 'the the' with 'the' in the comment. Signed-off-by:
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Slark Xiao authored
Replace 'the the' with 'the' in the comment. Signed-off-by:
Simon Horman <simon.horman@corigine.com> Signed-off-by:
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- 24 Jul, 2022 2 commits
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Xin Long authored
Since commit 1033990a ("sctp: implement memory accounting on tx path"), SCTP has supported memory accounting on tx path where 'sctp_wmem' is used by sk_wmem_schedule(). So we should fix the description for this option in ip-sysctl.rst accordingly. v1->v2: - Improve the description as Marcelo suggested. Fixes: 1033990a ("sctp: implement memory accounting on tx path") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
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Maxim Mikityanskiy authored
tls_device_down takes a reference on all contexts it's going to move to the degraded state (software fallback). If sk_destruct runs afterwards, it can reduce the reference counter back to 1 and return early without destroying the context. Then tls_device_down will release the reference it took and call tls_device_free_ctx. However, the context will still stay in tls_device_down_list forever. The list will contain an item, memory for which is released, making a memory corruption possible. Fix the above bug by properly removing the context from all lists before any call to tls_device_free_ctx. Fixes: 3740651b ("tls: Fix context leak on tls_device_down") Signed-off-by:
Maxim Mikityanskiy <maximmi@nvidia.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Signed-off-by:
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- 22 Jul, 2022 12 commits
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Wei Wang authored
This reverts commit 4a41f453. This to-be-reverted commit was meant to apply a stricter rule for the stack to enter pingpong mode. However, the condition used to check for interactive session "before(tp->lsndtime, icsk->icsk_ack.lrcvtime)" is jiffy based and might be too coarse, which delays the stack entering pingpong mode. We revert this patch so that we no longer use the above condition to determine interactive session, and also reduce pingpong threshold to 1. Fixes: 4a41f453 ("tcp: change pingpong threshold to 3") Reported-by:
LemmyHuang <hlm3280@163.com> Suggested-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
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Christophe JAILLET authored
Bitmap are "unsigned long", so use it instead of a "u32" to make things more explicit. While at it, remove some useless cast (and leading spaces) when using the bitmap API. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Rob Herring authored
The phy-reset-* properties are missing type definitions and are not common properties. Even though they are deprecated, a type is needed. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Rob Herring authored
While the if/then schemas mostly work, there's a few issues. The 'allOf' schema will also be true if 'fixed-link' is not an array or object as a false 'if' schema (without an 'else') will be true. In the array case doesn't set the type (uint32-array) in the 'then' clause. In the node case, 'additionalProperties' is missing. Rework the schema to use oneOf with each possible type. Signed-off-by:
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David S. Miller authored
Kuniyuki Iwashima says: ==================== sysctl: Fix data-races around ipv4_net_table (Round 5). This series fixes data-races around 15 knobs after tcp_dsack in ipv4_net_table. tcp_tso_win_divisor was skipped because it already uses READ_ONCE(). So, the final round for ipv4_net_table will start with tcp_pacing_ss_ratio. ==================== Signed-off-by: -
Kuniyuki Iwashima authored
While reading sysctl_tcp_invalid_ratelimit, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 032ee423 ("tcp: helpers to mitigate ACK loops by rate-limiting out-of-window dupacks") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_autocorking, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: f54b3111 ("tcp: auto corking") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_min_rtt_wlen, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: f6722583 ("tcp: track min RTT using windowed min-filter") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_tso_rtt_log, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 65466904 ("tcp: adjust TSO packet sizes based on min_rtt") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_min_tso_segs, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 95bd09eb ("tcp: TSO packets automatic sizing") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_challenge_ack_limit, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 282f23c6 ("tcp: implement RFC 5961 3.2") Signed-off-by:
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Kuniyuki Iwashima authored
While reading sysctl_tcp_limit_output_bytes, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. Fixes: 46d3ceab ("tcp: TCP Small Queues") Signed-off-by:
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