- 26 Oct, 2016 4 commits
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Eric Dumazet authored
First bug was added in commit ad6f939a ("ip: Add offset parameter to ip_cmsg_recv") : Tom missed that ipv4 udp messages could be received on AF_INET6 socket. ip_cmsg_recv(msg, skb) should have been replaced by ip_cmsg_recv_offset(msg, skb, sizeof(struct udphdr)); Then commit e6afc8ac ("udp: remove headers from UDP packets before queueing") forgot to adjust the offsets now UDP headers are pulled before skb are put in receive queue. Fixes: ad6f939a ("ip: Add offset parameter to ip_cmsg_recv") Fixes: e6afc8ac ("udp: remove headers from UDP packets before queueing") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Sam Kumar <samanthakumar@google.com> Cc: Willem de Bruijn <willemb@google.com> Tested-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Xin Long authored
Commit 7303a147 ("sctp: identify chunks that need to be fragmented at IP level") made the chunk be fragmented at IP level in the next round if it's size exceed PMTU. But there still is another case, PMTU can be updated if transport's dst expires and transport's pmtu_pending is set in sctp_packet_transmit. If the new PMTU is less than the chunk, the same issue with that commit can be triggered. So we should drop this packet and let it retransmit in another round where it would be fragmented at IP level. This patch is to fix it by checking the chunk size after PMTU may be updated and dropping this packet if it's size exceed PMTU. Fixes: 90017acc ("sctp: Add GSO support") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Neil Horman <nhorman@txudriver.com> Signed-off-by:
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Stephen Hemminger authored
The skbuff and sock structure both had missing parameter annotation values. Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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Wei Yongjun authored
Fix to return error code -EINVAL from the error handling case instead of 0, as done elsewhere in this function. Fixes: e420114e ("rocker: introduce worlds infrastructure") Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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- 23 Oct, 2016 5 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetoothDavid S. Miller authored
Johan Hedberg says: ==================== pull request: bluetooth 2016-10-21 Here are some more Bluetooth fixes for the 4.9 kernel: - Fix to btwilink driver probe function return value - Power management fix to hci_bcm - Fix to encoding name in scan response data Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: -
Jiri Slaby authored
Most of getsockopt handlers in net/sctp/socket.c check len against sizeof some structure like: if (len < sizeof(int)) return -EINVAL; On the first look, the check seems to be correct. But since len is int and sizeof returns size_t, int gets promoted to unsigned size_t too. So the test returns false for negative lengths. Yes, (-1 < sizeof(long)) is false. Fix this in sctp by explicitly checking len < 0 before any getsockopt handler is called. Note that sctp_getsockopt_events already handled the negative case. Since we added the < 0 check elsewhere, this one can be removed. If not checked, this is the result: UBSAN: Undefined behaviour in ../mm/page_alloc.c:2722:19 shift exponent 52 is too large for 32-bit type 'int' CPU: 1 PID: 24535 Comm: syz-executor Not tainted 4.8.1-0-syzkaller #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014 0000000000000000 ffff88006d99f2a8 ffffffffb2f7bdea 0000000041b58ab3 ffffffffb4363c14 ffffffffb2f7bcde ffff88006d99f2d0 ffff88006d99f270 0000000000000000 0000000000000000 0000000000000034 ffffffffb5096422 Call Trace: [<ffffffffb3051498>] ? __ubsan_handle_shift_out_of_bounds+0x29c/0x300 ... [<ffffffffb273f0e4>] ? kmalloc_order+0x24/0x90 [<ffffffffb27416a4>] ? kmalloc_order_trace+0x24/0x220 [<ffffffffb2819a30>] ? __kmalloc+0x330/0x540 [<ffffffffc18c25f4>] ? sctp_getsockopt_local_addrs+0x174/0xca0 [sctp] [<ffffffffc18d2bcd>] ? sctp_getsockopt+0x10d/0x1b0 [sctp] [<ffffffffb37c1219>] ? sock_common_getsockopt+0xb9/0x150 [<ffffffffb37be2f5>] ? SyS_getsockopt+0x1a5/0x270 Signed-off-by:Jiri Slaby <jslaby@suse.cz> Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-sctp@vger.kernel.org Cc: netdev@vger.kernel.org Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
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Fabio Estevam authored
Commit 3ac72b7b ("net: fec: align IP header in hardware") breaks networking on mx28. There is an erratum on mx28 (ENGR121613 - ENET big endian mode not compatible with ARM little endian) that requires an additional byte-swap operation to workaround this problem. So call swap_buffer() prior to performing the IP header alignment to restore network functionality on mx28. Fixes: 3ac72b7b ("net: fec: align IP header in hardware") Reported-and-tested-by:
Henri Roosen <henri.roosen@ginzinger.com> Signed-off-by:
Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by:
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Jason A. Donenfeld authored
Otherwise we'll overflow the integer. This occurs when layer 3 tunneled packets are handed off to the IPv6 layer. Signed-off-by:
Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by:
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Sudarsana Reddy Kalluru authored
Time Sync (PTP) implementation uses the divisor/shift value for converting the clock ticks to nanoseconds. Driver currently defines shift value as 1, this results in the nanoseconds value to be calculated as half the actual value. Hence the user application fails to synchronize the device clock value with the PTP master device clock. Need to use the 'shift' value of 0. Signed-off-by:
Sony.Chacko <Sony.Chacko@cavium.com> Signed-off-by:
Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com> Signed-off-by:
Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by:
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- 22 Oct, 2016 13 commits
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David S. Miller authored
Sudarsana Reddy Kalluru says: ==================== qed*: fix series. The patch series contains several minor bug fixes for qed/qede modules. Please consider applying this to 'net' branch. ==================== Signed-off-by: -
Manish Chopra authored
Driver uses incorrect APIs to unmap DMA memory which were mapped using dma_map_single(). This patch fixes it to use appropriate APIs for un-mapping DMA memory. Signed-off-by:
Manish Chopra <manish.chopra@cavium.com> Signed-off-by:
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Sudarsana Reddy Kalluru authored
qed_dcbx_query_params() implementation populate the values to input buffer based on the dcbx mode and, the current negotiated state/params, the caller of this API need to memset the buffer to zero. Signed-off-by:
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Sudarsana Reddy Kalluru authored
Rx indirection table entries are in the range [0, (rss_count - 1)]. If user reduces the rss count, the table entries may not be in the ccorrect range. Need to reconfigure the table with new rss_count as a basis. Signed-off-by:
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Sudarsana Reddy Kalluru authored
With the current default values for Rx path i.e., 8 queues of 8Kb entries each with 4Kb size, interface will consume 256Mb for Rx. The default values causing the driver probe to fail when the system memory is low. Based on the perforamnce results, rx-ring count value of 1Kb gives the comparable performance with Rx coalesce timeout of 12 seconds. Updating the default values. Signed-off-by:
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Sudarsana Reddy Kalluru authored
During the execution of loopback test, driver may receive the packets which are not originated by this test, loopback implementation need to skip those packets. Signed-off-by:
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Sudarsana Reddy Kalluru authored
RSS configuration is not supported for 100G adapters. Signed-off-by:
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Sudarsana Reddy Kalluru authored
Recent changes in kernel ethtool implementation requires the driver callback for get_channels() has to populate the values for max tx/rx coalesce fields. Signed-off-by:
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WANG Cong authored
This reverts commit a681574c ("ipv4: disable BH in set_ping_group_range()") because we never read ping_group_range in BH context (unlike local_port_range). Then, since we already have a lock for ping_group_range, those using ip_local_ports.lock for ping_group_range are clearly typos. We might consider to share a same lock for both ping_group_range and local_port_range w.r.t. space saving, but that should be for net-next. Fixes: a681574c ("ipv4: disable BH in set_ping_group_range()") Fixes: ba6b918a ("ping: move ping_group_range out of CONFIG_SYSCTL") Cc: Eric Dumazet <edumazet@google.com> Cc: Eric Salo <salo@google.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
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David S. Miller authored
Florian Fainelli says: ==================== net: dsa: bcm_sf2: Do not rely on kexec_in_progress These are the two patches following the discussing we had on kexec_in_progress. Feel free to apply or discard them, thanks! ==================== Signed-off-by: -
Florian Fainelli authored
After discussing with Eric, it turns out that, while using kexec_in_progress is a nice optimization, which prevents us from always powering on the integrated PHY, let's just turn it on in the shutdown path. This removes a dependency on kexec_in_progress which, according to Eric should not be used by modules Fixes: 2399d614 ("net: dsa: bcm_sf2: Prevent GPHY shutdown for kexec'd kernels") Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Florian Fainelli authored
This reverts commit 97dcaa0f. Based on the review discussion with Eric, we will come up with a different fix for the bcm_sf2 driver which does not make it rely on the kexec_in_progress value. Signed-off-by:
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Paul Moore authored
This reverts commit bc51dddf ("netns: avoid disabling irq for netns id") as it was found to cause problems with systems running SELinux/audit, see the mailing list thread below: * http://marc.info/?t=147694653900002&r=1&w=2 Eventually we should be able to reintroduce this code once we have rewritten the audit multicast code to queue messages much the same way we do for unicast messages. A tracking issue for this can be found below: * https://github.com/linux-audit/audit-kernel/issues/23Reported-by:
Stephen Smalley <sds@tycho.nsa.gov> Reported-by:
Elad Raz <e@eladraz.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
Paul Moore <paul@paul-moore.com> Signed-off-by:
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- 21 Oct, 2016 3 commits
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WANG Cong authored
Baozeng reported this deadlock case: CPU0 CPU1 ---- ---- lock([ 165.136033] sk_lock-AF_INET6); lock([ 165.136033] rtnl_mutex); lock([ 165.136033] sk_lock-AF_INET6); lock([ 165.136033] rtnl_mutex); Similar to commit 87e9f031 ("ipv4: fix a potential deadlock in mcast getsockopt() path") this is due to we still have a case, ipv6_sock_mc_close(), where we acquire sk_lock before rtnl_lock. Close this deadlock with the similar solution, that is always acquire rtnl lock first. Fixes: baf606d9 ("ipv4,ipv6: grab rtnl before locking the socket") Reported-by:Baozeng Ding <sploving1@gmail.com> Tested-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for your net tree, they are: 1) Fix compilation warning in xt_hashlimit on m68k 32-bits, from Geert Uytterhoeven. 2) Fix wrong timeout in set elements added from packet path via nft_dynset, from Anders K. Pedersen. 3) Remove obsolete nf_conntrack_events_retry_timeout sysctl documentation, from Nicolas Dichtel. 4) Ensure proper initialization of log flags via xt_LOG, from Liping Zhang. 5) Missing alias to autoload ipcomp, also from Liping Zhang. 6) Missing NFTA_HASH_OFFSET attribute validation, again from Liping. 7) Wrong integer type in the new nft_parse_u32_check() function, from Dan Carpenter. 8) Another wrong integer type declaration in nft_exthdr_init, also from Dan Carpenter. 9) Fix insufficient mode validation in nft_range. 10) Fix compilation warning in nft_range due to possible uninitialized value, from Arnd Bergmann. 11) Zero nf_hook_ops allocated via xt_hook_alloc() in x_tables to calm down kmemcheck, from Florian Westphal. 12) Schedule gc_worker() to run again if GC_MAX_EVICTS quota is reached, from Nicolas Dichtel. 13) Fix nf_queue() after conversion to single-linked hook list, related to incorrect bypass flag handling and incorrect hook point of reinjection. ==================== Signed-off-by: -
Florian Fainelli authored
The bcm_sf2 driver uses kexec_in_progress to know whether it can power down an integrated PHY during shutdown, and can be built as a module. Other modules may be using this in the future, so export it. Fixes: 2399d614 ("net: dsa: bcm_sf2: Prevent GPHY shutdown for kexec'd kernels") Signed-off-by:
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- 20 Oct, 2016 15 commits
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Eric Dumazet authored
In commit 4ee3bd4a ("ipv4: disable BH when changing ip local port range") Cong added BH protection in set_local_port_range() but missed that same fix was needed in set_ping_group_range() Fixes: b8f1a556 ("udp: Add function to make source port for UDP tunnels") Signed-off-by:
Eric Salo <salo@google.com> Signed-off-by:
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Eric Dumazet authored
Baozeng Ding reported KASAN traces showing uses after free in udp_lib_get_port() and other related UDP functions. A CONFIG_DEBUG_PAGEALLOC=y kernel would eventually crash. I could write a reproducer with two threads doing : static int sock_fd; static void *thr1(void *arg) { for (;;) { connect(sock_fd, (const struct sockaddr *)arg, sizeof(struct sockaddr_in)); } } static void *thr2(void *arg) { struct sockaddr_in unspec; for (;;) { memset(&unspec, 0, sizeof(unspec)); connect(sock_fd, (const struct sockaddr *)&unspec, sizeof(unspec)); } } Problem is that udp_disconnect() could run without holding socket lock, and this was causing list corruptions. Signed-off-by: -
Florian Fainelli authored
For a kernel that is being kexec'd we re-enable the integrated GPHY in order for the subsequent MDIO bus scan to succeed and properly bind to the bcm7xxx PHY driver. If we did not do that, the GPHY would be shut down by the time the MDIO driver is probing the bus, and it would fail to read the correct PHY OUI and therefore bind to an appropriate PHY driver. Later on, this would cause DSA not to be able to successfully attach to the PHY, and the interface would not be created at all. Signed-off-by:
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Daniel Borkmann authored
After commit 636c2628 ("net: skbuff: Remove errornous length validation in skb_vlan_pop()") mentioned test case stopped working, throwing a -12 (ENOMEM) return code. The issue however is not due to 636c2628, but rather due to a buggy test case that got uncovered from the change in behaviour in 636c2628. The data_size of that test case for the skb was set to 1. In the bpf_fill_ld_abs_vlan_push_pop() handler bpf insns are generated that loop with: reading skb data, pushing 68 tags, reading skb data, popping 68 tags, reading skb data, etc, in order to force a skb expansion and thus trigger that JITs recache skb->data. Problem is that initial data_size is too small. While before 636c2628, the test silently bailed out due to the skb->len < VLAN_ETH_HLEN check with returning 0, and now throwing an error from failing skb_ensure_writable(). Set at least minimum of ETH_HLEN as an initial length so that on first push of data, equivalent pop will succeed. Fixes: 4d9c5c53 ("test_bpf: add bpf_skb_vlan_push/pop() tests") Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
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Sabrina Dubroca authored
Currently, GRO can do unlimited recursion through the gro_receive handlers. This was fixed for tunneling protocols by limiting tunnel GRO to one level with encap_mark, but both VLAN and TEB still have this problem. Thus, the kernel is vulnerable to a stack overflow, if we receive a packet composed entirely of VLAN headers. This patch adds a recursion counter to the GRO layer to prevent stack overflow. When a gro_receive function hits the recursion limit, GRO is aborted for this skb and it is processed normally. This recursion counter is put in the GRO CB, but could be turned into a percpu counter if we run out of space in the CB. Thanks to Vladimír Beneš <vbenes@redhat.com> for the initial bug report. Fixes: CVE-2016-7039 Fixes: 9b174d88 ("net: Add Transparent Ethernet Bridging GRO support.") Fixes: 66e5133f ("vlan: Add GRO support for non hardware accelerated vlan") Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Reviewed-by:
Jiri Benc <jbenc@redhat.com> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by:
Tom Herbert <tom@herbertland.com> Signed-off-by:
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Jiri Bohac authored
The check for an underflow of tmp_prefered_lft is always false because tmp_prefered_lft is unsigned. The intention of the check was to guard against racing with an update of the temp_prefered_lft sysctl, potentially resulting in an underflow. As suggested by David Miller, the best way to prevent the race is by reading the sysctl variable using READ_ONCE. Signed-off-by:
Jiri Bohac <jbohac@suse.cz> Reported-by:
Julia Lawall <julia.lawall@lip6.fr> Fixes: 76506a98 ("IPv6: fix DESYNC_FACTOR") Signed-off-by:
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Pablo Neira Ayuso authored
nf_queue handling is broken since e3b37f11 ("netfilter: replace list_head with single linked list") for two reasons: 1) If the bypass flag is set on, there are no userspace listeners and we still have more hook entries to iterate over, then jump to the next hook. Otherwise accept the packet. On nf_reinject() path, the okfn() needs to be invoked. 2) We should not re-enter the same hook on packet reinjection. If the packet is accepted, we have to skip the current hook from where the packet was enqueued, otherwise the packets gets enqueued over and over again. This restores the previous list_for_each_entry_continue() behaviour happening from nf_iterate() that was dealing with these two cases. This patch introduces a new nf_queue() wrapper function so this fix becomes simpler. Fixes: e3b37f11 ("netfilter: replace list_head with single linked list") Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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Nicolas Dichtel authored
When the maximum evictions number is reached, do not wait 5 seconds before the next run. CC: Florian Westphal <fw@strlen.de> Signed-off-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Acked-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Giuseppe CAVALLARO authored
It makes sense to display the descriptors even if DES0 is zero. This helps for example in case of it is needed to dump rx write-back descriptors to get timestamp status. Signed-off-by:
Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by:
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David S. Miller authored
Gavin Shan says: ==================== net/ncsi: More bug fixes This series fixes 2 issues that were found during NCSI's availability testing on BCM5718 and improves HNCDSC AEN handler: * PATCH[1] refactors the code so that minimal code change is put to PATCH[2]. * PATCH[2] fixes the NCSI channel's stale link state before doing failover. * PATCH[3] chooses the hot channel, which was ever chosen as active channel, when the available channels are all in link-down state. * PATCH[4] improves Host Network Controller Driver Status Change (HNCDSC) AEN handler Changelog ========= v2: * Merged PATCH[v1 1/2] to PATCH[v2 1]. * Avoid if/else statements in ncsi_suspend_channel() as Joel suggested. * Added comments to explain why we need retrieve last link states in ncsi_suspend_channel(). ==================== Signed-off-by: -
Gavin Shan authored
This improves AEN handler for Host Network Controller Driver Status Change (HNCDSC): * The channel's lock should be hold when accessing its state. * Do failover when host driver isn't ready. * Configure channel when host driver becomes ready. Signed-off-by:
Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by:
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Gavin Shan authored
The issue was found on BCM5718 which has two NCSI channels in one package: C0 and C1. C0 is in link-up state while C1 is in link-down state. C0 is chosen as active channel until unplugging and plugging C0's cable: On unplugging C0's cable, LSC (Link State Change) AEN packet received on C0 to report link-down event. After that, C1 is chosen as active channel. LSC AEN for link-up event is lost on C0 when plugging C0's cable back. We lose the network even C0 is usable. This resolves the issue by recording the (hot) channel that was ever chosen as active one. The hot channel is chosen to be active one if none of available channels in link-up state. With this, C0 is still the active one after unplugging C0's cable. LSC AEN packet received on C0 when plugging its cable back. Signed-off-by:
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Gavin Shan authored
The issue was found on BCM5718 which has two NCSI channels in one package: C0 and C1. Both of them are connected to different LANs, means they are in link-up state and C0 is chosen as the active one until resetting BCM5718 happens as below. Resetting BCM5718 results in LSC (Link State Change) AEN packet received on C0, meaning LSC AEN is missed on C1. When LSC AEN packet received on C0 to report link-down, it fails over to C1 because C1 is in link-up state as software can see. However, C1 is in link-down state in hardware. It means the link state is out of synchronization between hardware and software, resulting in inappropriate channel (C1) selected as active one. This resolves the issue by sending separate GLS (Get Link Status) commands to all channels in the package before trying to do failover. The last link states of all channels in the package are retrieved. With it, C0 (not C1) is selected as active one as expected. Signed-off-by:
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Gavin Shan authored
There are several if/else statements in the state machine implemented by switch/case in ncsi_suspend_channel() to avoid duplicated code. It makes the code a bit hard to be understood. This drops if/else statements in ncsi_suspend_channel() to improve the code readability as Joel Stanley suggested. Also, it becomes easy to add more states in the state machine without affecting current code. No logical changes introduced by this. Suggested-by:
Joel Stanley <joel@jms.id.au> Signed-off-by:
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Paul Blakey authored
stats_update callback is called by NIC drivers doing hardware offloading of the mirred action. Lastuse is passed as argument to specify when the stats was actually last updated and is not always the current time. Fixes: 9798e6fe ('net: act_mirred: allow statistic updates from offloaded actions') Signed-off-by:
Paul Blakey <paulb@mellanox.com> Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
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