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2016-04-21rtc: ds1307: ds3231 temperature s16 overflowZhuang Yuyao1-2/+2
while retrieving temperature from ds3231, the result may be overflow since s16 is too small for a multiplication with 250. ie. if temp_buf[0] == 0x2d, the result (s16 temp) will be negative. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Tested-by: Michael Tatarinov <kukabu@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-04-21openvswitch: use flow protocol when recalculating ipv6 checksumsSimon Horman1-2/+2
When using masked actions the ipv6_proto field of an action to set IPv6 fields may be zero rather than the prevailing protocol which will result in skipping checksum recalculation. This patch resolves the problem by relying on the protocol in the flow key rather than that in the set field action. Fixes: 83d2b9ba1abc ("net: openvswitch: Support masked set actions.") Cc: Jarno Rajahalme <jrajahalme@nicira.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21Driver: Vmxnet3: set CHECKSUM_UNNECESSARY for IPv6 packetsShrikrishna Khare2-6/+10
For IPv6, if the device indicates that the checksum is correct, set CHECKSUM_UNNECESSARY. Reported-by: Subbarao Narahari <snarahari@vmware.com> Signed-off-by: Shrikrishna Khare <skhare@vmware.com> Signed-off-by: Jin Heo <heoj@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21atl2: Disable unimplemented scatter/gather featureBen Hutchings1-1/+1
atl2 includes NETIF_F_SG in hw_features even though it has no support for non-linear skbs. This bug was originally harmless since the driver does not claim to implement checksum offload and that used to be a requirement for SG. Now that SG and checksum offload are independent features, if you explicitly enable SG *and* use one of the rare protocols that can use SG without checkusm offload, this potentially leaks sensitive information (before you notice that it just isn't working). Therefore this obscure bug has been designated CVE-2016-2117. Reported-by: Justin Yackoski <jyackoski@crypto-nite.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Fixes: ec5f06156423 ("net: Kill link between CSUM and SG features.") Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net/mlx4_en: Split SW RX dropped counter per RX ringEran Ben Elisha4-3/+10
Count SW packet drops per RX ring instead of a global counter. This will allow monitoring the number of rx drops per ring. In addition, SW rx_dropped counter was overwritten by HW rx_dropped counter, sum both of them instead to show the accurate value. Fixes: a3333b35da16 ('net/mlx4_en: Moderate ethtool callback to [...] ') Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Reported-by: Brenden Blanco <bblanco@plumgrid.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net/mlx4_core: Don't allow to VF change global pause settingsEugenia Emantayev2-0/+15
Currently changing global pause settings is done via SET_PORT command with input modifier GENERAL. This command is allowed for each VF since MTU setting is done via the same command. Change the above to the following scheme: before passing the request to the FW, the PF will check whether it was issued by a slave. If yes, don't change global pause and warn, otherwise change to the requested value and store for further reference. Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net/mlx4_core: Avoid repeated calls to pci enable/disableDaniel Jurgens2-5/+41
Maintain the PCI status and provide wrappers for enabling and disabling the PCI device. Performing the actions more than once without doing its opposite results in warning logs. This occurred when EEH hotplugged the device causing a warning for disabling an already disabled device. Fixes: 2ba5fbd62b25 ('net/mlx4_core: Handle AER flow properly') Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net/mlx4_core: Implement pci_resume callbackDaniel Jurgens1-15/+24
Move resume related activities to a new pci_resume function instead of performing them in mlx4_pci_slot_reset. This change is needed to avoid a hotplug during EEH recovery due to commit f2da4ccf8bd4 ("powerpc/eeh: More relaxed hotplug criterion"). Fixes: 2ba5fbd62b25 ('net/mlx4_core: Handle AER flow properly') Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net: phy: spi_ks8895: Don't leak references to SPI devicesMark Brown1-1/+1
The ks8895 driver is using spi_dev_get() apparently just to take a copy of the SPI device used to instantiate it but never calls spi_dev_put() to free it. Since the device is guaranteed to exist between probe() and remove() there should be no need for the driver to take an extra reference to it so fix the leak by just using a straight assignment. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net: ethernet: davinci_emac: Fix platform_data overwriteNeil Armstrong1-2/+0
When the DaVinci emac driver is removed and re-probed, the actual pdev->dev.platform_data is populated with an unwanted valid pointer saved by the previous davinci_emac_of_get_pdata() call, causing a kernel crash when calling priv->int_disable() in emac_int_disable(). Unable to handle kernel paging request at virtual address c8622a80 ... [<c0426fb4>] (emac_int_disable) from [<c0427700>] (emac_dev_open+0x290/0x5f8) [<c0427700>] (emac_dev_open) from [<c04c00ec>] (__dev_open+0xb8/0x120) [<c04c00ec>] (__dev_open) from [<c04c0370>] (__dev_change_flags+0x88/0x14c) [<c04c0370>] (__dev_change_flags) from [<c04c044c>] (dev_change_flags+0x18/0x48) [<c04c044c>] (dev_change_flags) from [<c052bafc>] (devinet_ioctl+0x6b4/0x7ac) [<c052bafc>] (devinet_ioctl) from [<c04a1428>] (sock_ioctl+0x1d8/0x2c0) [<c04a1428>] (sock_ioctl) from [<c014f054>] (do_vfs_ioctl+0x41c/0x600) [<c014f054>] (do_vfs_ioctl) from [<c014f2a4>] (SyS_ioctl+0x6c/0x7c) [<c014f2a4>] (SyS_ioctl) from [<c000ff60>] (ret_fast_syscall+0x0/0x1c) Fixes: 42f59967a091 ("net: ethernet: davinci_emac: add OF support") Cc: Brian Hutchinson <b.hutchman@gmail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21net: ethernet: davinci_emac: Fix Unbalanced pm_runtime_enableNeil Armstrong1-0/+1
In order to avoid an Unbalanced pm_runtime_enable in the DaVinci emac driver when the device is removed and re-probed, and a pm_runtime_disable() call in davinci_emac_remove(). Actually, using unbind/bind on a TI DM8168 SoC gives : $ echo 4a120000.ethernet > /sys/bus/platform/drivers/davinci_emac/unbind net eth1: DaVinci EMAC: davinci_emac_remove() $ echo 4a120000.ethernet > /sys/bus/platform/drivers/davinci_emac/bind davinci_emac 4a120000.ethernet: Unbalanced pm_runtime_enable Cc: Brian Hutchinson <b.hutchman@gmail.com> Fixes: 3ba97381343b ("net: ethernet: davinci_emac: add pm_runtime support") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21qede: Fix single MTU sized packet from firmware GRO flowManish Chopra1-0/+13
In firmware assisted GRO flow there could be a single MTU sized segment arriving due to firmware aggregation timeout/last segment in an aggregation flow, which is not expected to be an actual gro packet. So If a skb has zero frags from the GRO flow then simply push it in the stack as non gso skb. Signed-off-by: Manish Chopra <manish.chopra@qlogic.com> Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21qede: Fix setting Skb network headerManish Chopra1-2/+2
Skb's network header needs to be set before extracting IPv4/IPv6 headers from it. Signed-off-by: Manish Chopra <manish.chopra@qlogic.com> Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21qede: Fix various memory allocation error flows for fastpathManish Chopra1-55/+85
This patch handles memory allocation failures for fastpath gracefully in the driver. Signed-off-by: Manish Chopra <manish.chopra@qlogic.com> Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21tcp: Merge tx_flags and tskey in tcp_shifted_skbMartin KaFai Lau3-2/+5
After receiving sacks, tcp_shifted_skb() will collapse skbs if possible. tx_flags and tskey also have to be merged. This patch reuses the tcp_skb_collapse_tstamp() to handle them. BPF Output Before: ~~~~~ <no-output-due-to-missing-tstamp-event> BPF Output After: ~~~~~ <...>-2024 [007] d.s. 88.644374: : ee_data:14599 Packetdrill Script: ~~~~~ +0 `sysctl -q -w net.ipv4.tcp_min_tso_segs=10` +0 `sysctl -q -w net.ipv4.tcp_no_metrics_save=1` +0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 0.100 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7> 0.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 7> 0.200 < . 1:1(0) ack 1 win 257 0.200 accept(3, ..., ...) = 4 +0 setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0 0.200 write(4, ..., 1460) = 1460 +0 setsockopt(4, SOL_SOCKET, 37, [2688], 4) = 0 0.200 write(4, ..., 13140) = 13140 0.200 > P. 1:1461(1460) ack 1 0.200 > . 1461:8761(7300) ack 1 0.200 > P. 8761:14601(5840) ack 1 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:14601,nop,nop> 0.300 > P. 1:1461(1460) ack 1 0.400 < . 1:1(0) ack 14601 win 257 0.400 close(4) = 0 0.400 > F. 14601:14601(0) ack 1 0.500 < F. 1:1(0) ack 14602 win 257 0.500 > . 14602:14602(0) ack 2 Signed-off-by: Martin KaFai Lau <kafai@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Tested-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21tcp: Merge tx_flags and tskey in tcp_collapse_retransMartin KaFai Lau1-0/+16
If two skbs are merged/collapsed during retransmission, the current logic does not merge the tx_flags and tskey. The end result is the SCM_TSTAMP_ACK timestamp could be missing for a packet. The patch: 1. Merge the tx_flags 2. Overwrite the prev_skb's tskey with the next_skb's tskey BPF Output Before: ~~~~~~ <no-output-due-to-missing-tstamp-event> BPF Output After: ~~~~~~ packetdrill-2092 [001] d.s. 453.998486: : ee_data:1459 Packetdrill Script: ~~~~~~ +0 `sysctl -q -w net.ipv4.tcp_min_tso_segs=10` +0 `sysctl -q -w net.ipv4.tcp_no_metrics_save=1` +0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 0.100 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7> 0.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 7> 0.200 < . 1:1(0) ack 1 win 257 0.200 accept(3, ..., ...) = 4 +0 setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0 0.200 write(4, ..., 730) = 730 +0 setsockopt(4, SOL_SOCKET, 37, [2688], 4) = 0 0.200 write(4, ..., 730) = 730 +0 setsockopt(4, SOL_SOCKET, 37, [2176], 4) = 0 0.200 write(4, ..., 11680) = 11680 +0 setsockopt(4, SOL_SOCKET, 37, [2688], 4) = 0 0.200 > P. 1:731(730) ack 1 0.200 > P. 731:1461(730) ack 1 0.200 > . 1461:8761(7300) ack 1 0.200 > P. 8761:13141(4380) ack 1 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:2921,nop,nop> 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:4381,nop,nop> 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:5841,nop,nop> 0.300 > P. 1:1461(1460) ack 1 0.400 < . 1:1(0) ack 13141 win 257 0.400 close(4) = 0 0.400 > F. 13141:13141(0) ack 1 0.500 < F. 1:1(0) ack 13142 win 257 0.500 > . 13142:13142(0) ack 2 Signed-off-by: Martin KaFai Lau <kafai@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Tested-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21drivers: net: cpsw: fix wrong regs access in cpsw_ndo_openGrygorii Strashko1-2/+2
The cpsw_ndo_open() could try to access CPSW registers before calling pm_runtime_get_sync(). This will trigger L3 error: WARNING: CPU: 0 PID: 21 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x220/0x34c() 44000000.ocp:L3 Custom Error: MASTER M2 (64-bit) TARGET L4_FAST (Idle): Data Access in Supervisor mode during Functional access and CPSW will stop functioning. Hence, fix it by moving pm_runtime_get_sync() before the first access to CPSW registers in cpsw_ndo_open(). Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21tcp: Fix SOF_TIMESTAMPING_TX_ACK when handling dup acksMartin KaFai Lau1-1/+2
Assuming SOF_TIMESTAMPING_TX_ACK is on. When dup acks are received, it could incorrectly think that a skb has already been acked and queue a SCM_TSTAMP_ACK cmsg to the sk->sk_error_queue. In tcp_ack_tstamp(), it checks 'between(shinfo->tskey, prior_snd_una, tcp_sk(sk)->snd_una - 1)'. If prior_snd_una == tcp_sk(sk)->snd_una like the following packetdrill script, between() returns true but the tskey is actually not acked. e.g. try between(3, 2, 1). The fix is to replace between() with one before() and one !before(). By doing this, the -1 offset on the tcp_sk(sk)->snd_una can also be removed. A packetdrill script is used to reproduce the dup ack scenario. Due to the lacking cmsg support in packetdrill (may be I cannot find it), a BPF prog is used to kprobe to sock_queue_err_skb() and print out the value of serr->ee.ee_data. Both the packetdrill and the bcc BPF script is attached at the end of this commit message. BPF Output Before Fix: ~~~~~~ <...>-2056 [001] d.s. 433.927987: : ee_data:1459 #incorrect packetdrill-2056 [001] d.s. 433.929563: : ee_data:1459 #incorrect packetdrill-2056 [001] d.s. 433.930765: : ee_data:1459 #incorrect packetdrill-2056 [001] d.s. 434.028177: : ee_data:1459 packetdrill-2056 [001] d.s. 434.029686: : ee_data:14599 BPF Output After Fix: ~~~~~~ <...>-2049 [000] d.s. 113.517039: : ee_data:1459 <...>-2049 [000] d.s. 113.517253: : ee_data:14599 BCC BPF Script: ~~~~~~ #!/usr/bin/env python from __future__ import print_function from bcc import BPF bpf_text = """ #include <uapi/linux/ptrace.h> #include <net/sock.h> #include <bcc/proto.h> #include <linux/errqueue.h> #ifdef memset #undef memset #endif int trace_err_skb(struct pt_regs *ctx) { struct sk_buff *skb = (struct sk_buff *)ctx->si; struct sock *sk = (struct sock *)ctx->di; struct sock_exterr_skb *serr; u32 ee_data = 0; if (!sk || !skb) return 0; serr = SKB_EXT_ERR(skb); bpf_probe_read(&ee_data, sizeof(ee_data), &serr->ee.ee_data); bpf_trace_printk("ee_data:%u\\n", ee_data); return 0; }; """ b = BPF(text=bpf_text) b.attach_kprobe(event="sock_queue_err_skb", fn_name="trace_err_skb") print("Attached to kprobe") b.trace_print() Packetdrill Script: ~~~~~~ +0 `sysctl -q -w net.ipv4.tcp_min_tso_segs=10` +0 `sysctl -q -w net.ipv4.tcp_no_metrics_save=1` +0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 +0 bind(3, ..., ...) = 0 +0 listen(3, 1) = 0 0.100 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7> 0.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 7> 0.200 < . 1:1(0) ack 1 win 257 0.200 accept(3, ..., ...) = 4 +0 setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0 +0 setsockopt(4, SOL_SOCKET, 37, [2688], 4) = 0 0.200 write(4, ..., 1460) = 1460 0.200 write(4, ..., 13140) = 13140 0.200 > P. 1:1461(1460) ack 1 0.200 > . 1461:8761(7300) ack 1 0.200 > P. 8761:14601(5840) ack 1 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:2921,nop,nop> 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:4381,nop,nop> 0.300 < . 1:1(0) ack 1 win 257 <sack 1461:5841,nop,nop> 0.300 > P. 1:1461(1460) ack 1 0.400 < . 1:1(0) ack 14601 win 257 0.400 close(4) = 0 0.400 > F. 14601:14601(0) ack 1 0.500 < F. 1:1(0) ack 14602 win 257 0.500 > . 14602:14602(0) ack 2 Signed-off-by: Martin KaFai Lau <kafai@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Soheil Hassas Yeganeh <soheil.kdev@gmail.com> Cc: Willem de Bruijn <willemb@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by: Soheil Hassas Yeganeh <soheil@google.com> Tested-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21openvswitch: Orphan skbs before IPv6 defragJoe Stringer1-0/+1
This is the IPv6 counterpart to commit 8282f27449bf ("inet: frag: Always orphan skbs inside ip_defrag()"). Prior to commit 029f7f3b8701 ("netfilter: ipv6: nf_defrag: avoid/free clone operations"), ipv6 fragments sent to nf_ct_frag6_gather() would be cloned (implicitly orphaning) prior to queueing for reassembly. As such, when the IPv6 message is eventually reassembled, the skb->sk for all fragments would be NULL. After that commit was introduced, rather than cloning, the original skbs were queued directly without orphaning. The end result is that all frags except for the first and last may have a socket attached. This commit explicitly orphans such skbs during nf_ct_frag6_gather() to prevent BUG_ON(skb->sk) during a later call to ip6_fragment(). kernel BUG at net/ipv6/ip6_output.c:631! [...] Call Trace: <IRQ> [<ffffffff810be8f7>] ? __lock_acquire+0x927/0x20a0 [<ffffffffa042c7c0>] ? do_output.isra.28+0x1b0/0x1b0 [openvswitch] [<ffffffff810bb8a2>] ? __lock_is_held+0x52/0x70 [<ffffffffa042c587>] ovs_fragment+0x1f7/0x280 [openvswitch] [<ffffffff810bdab5>] ? mark_held_locks+0x75/0xa0 [<ffffffff817be416>] ? _raw_spin_unlock_irqrestore+0x36/0x50 [<ffffffff81697ea0>] ? dst_discard_out+0x20/0x20 [<ffffffff81697e80>] ? dst_ifdown+0x80/0x80 [<ffffffffa042c703>] do_output.isra.28+0xf3/0x1b0 [openvswitch] [<ffffffffa042d279>] do_execute_actions+0x709/0x12c0 [openvswitch] [<ffffffffa04340a4>] ? ovs_flow_stats_update+0x74/0x1e0 [openvswitch] [<ffffffffa04340d1>] ? ovs_flow_stats_update+0xa1/0x1e0 [openvswitch] [<ffffffff817be387>] ? _raw_spin_unlock+0x27/0x40 [<ffffffffa042de75>] ovs_execute_actions+0x45/0x120 [openvswitch] [<ffffffffa0432d65>] ovs_dp_process_packet+0x85/0x150 [openvswitch] [<ffffffff817be387>] ? _raw_spin_unlock+0x27/0x40 [<ffffffffa042def4>] ovs_execute_actions+0xc4/0x120 [openvswitch] [<ffffffffa0432d65>] ovs_dp_process_packet+0x85/0x150 [openvswitch] [<ffffffffa04337f2>] ? key_extract+0x442/0xc10 [openvswitch] [<ffffffffa043b26d>] ovs_vport_receive+0x5d/0xb0 [openvswitch] [<ffffffff810be8f7>] ? __lock_acquire+0x927/0x20a0 [<ffffffff810be8f7>] ? __lock_acquire+0x927/0x20a0 [<ffffffff810be8f7>] ? __lock_acquire+0x927/0x20a0 [<ffffffff817be416>] ? _raw_spin_unlock_irqrestore+0x36/0x50 [<ffffffffa043c11d>] internal_dev_xmit+0x6d/0x150 [openvswitch] [<ffffffffa043c0b5>] ? internal_dev_xmit+0x5/0x150 [openvswitch] [<ffffffff8168fb5f>] dev_hard_start_xmit+0x2df/0x660 [<ffffffff8168f5ea>] ? validate_xmit_skb.isra.105.part.106+0x1a/0x2b0 [<ffffffff81690925>] __dev_queue_xmit+0x8f5/0x950 [<ffffffff81690080>] ? __dev_queue_xmit+0x50/0x950 [<ffffffff810bdab5>] ? mark_held_locks+0x75/0xa0 [<ffffffff81690990>] dev_queue_xmit+0x10/0x20 [<ffffffff8169a418>] neigh_resolve_output+0x178/0x220 [<ffffffff81752759>] ? ip6_finish_output2+0x219/0x7b0 [<ffffffff81752759>] ip6_finish_output2+0x219/0x7b0 [<ffffffff817525a5>] ? ip6_finish_output2+0x65/0x7b0 [<ffffffff816cde2b>] ? ip_idents_reserve+0x6b/0x80 [<ffffffff8175488f>] ? ip6_fragment+0x93f/0xc50 [<ffffffff81754af1>] ip6_fragment+0xba1/0xc50 [<ffffffff81752540>] ? ip6_flush_pending_frames+0x40/0x40 [<ffffffff81754c6b>] ip6_finish_output+0xcb/0x1d0 [<ffffffff81754dcf>] ip6_output+0x5f/0x1a0 [<ffffffff81754ba0>] ? ip6_fragment+0xc50/0xc50 [<ffffffff81797fbd>] ip6_local_out+0x3d/0x80 [<ffffffff817554df>] ip6_send_skb+0x2f/0xc0 [<ffffffff817555bd>] ip6_push_pending_frames+0x4d/0x50 [<ffffffff817796cc>] icmpv6_push_pending_frames+0xac/0xe0 [<ffffffff8177a4be>] icmpv6_echo_reply+0x42e/0x500 [<ffffffff8177acbf>] icmpv6_rcv+0x4cf/0x580 [<ffffffff81755ac7>] ip6_input_finish+0x1a7/0x690 [<ffffffff81755925>] ? ip6_input_finish+0x5/0x690 [<ffffffff817567a0>] ip6_input+0x30/0xa0 [<ffffffff81755920>] ? ip6_rcv_finish+0x1a0/0x1a0 [<ffffffff817557ce>] ip6_rcv_finish+0x4e/0x1a0 [<ffffffff8175640f>] ipv6_rcv+0x45f/0x7c0 [<ffffffff81755fe6>] ? ipv6_rcv+0x36/0x7c0 [<ffffffff81755780>] ? ip6_make_skb+0x1c0/0x1c0 [<ffffffff8168b649>] __netif_receive_skb_core+0x229/0xb80 [<ffffffff810bdab5>] ? mark_held_locks+0x75/0xa0 [<ffffffff8168c07f>] ? process_backlog+0x6f/0x230 [<ffffffff8168bfb6>] __netif_receive_skb+0x16/0x70 [<ffffffff8168c088>] process_backlog+0x78/0x230 [<ffffffff8168c0ed>] ? process_backlog+0xdd/0x230 [<ffffffff8168db43>] net_rx_action+0x203/0x480 [<ffffffff810bdab5>] ? mark_held_locks+0x75/0xa0 [<ffffffff817c156e>] __do_softirq+0xde/0x49f [<ffffffff81752768>] ? ip6_finish_output2+0x228/0x7b0 [<ffffffff817c070c>] do_softirq_own_stack+0x1c/0x30 <EOI> [<ffffffff8106f88b>] do_softirq.part.18+0x3b/0x40 [<ffffffff8106f946>] __local_bh_enable_ip+0xb6/0xc0 [<ffffffff81752791>] ip6_finish_output2+0x251/0x7b0 [<ffffffff81754af1>] ? ip6_fragment+0xba1/0xc50 [<ffffffff816cde2b>] ? ip_idents_reserve+0x6b/0x80 [<ffffffff8175488f>] ? ip6_fragment+0x93f/0xc50 [<ffffffff81754af1>] ip6_fragment+0xba1/0xc50 [<ffffffff81752540>] ? ip6_flush_pending_frames+0x40/0x40 [<ffffffff81754c6b>] ip6_finish_output+0xcb/0x1d0 [<ffffffff81754dcf>] ip6_output+0x5f/0x1a0 [<ffffffff81754ba0>] ? ip6_fragment+0xc50/0xc50 [<ffffffff81797fbd>] ip6_local_out+0x3d/0x80 [<ffffffff817554df>] ip6_send_skb+0x2f/0xc0 [<ffffffff817555bd>] ip6_push_pending_frames+0x4d/0x50 [<ffffffff81778558>] rawv6_sendmsg+0xa28/0xe30 [<ffffffff81719097>] ? inet_sendmsg+0xc7/0x1d0 [<ffffffff817190d6>] inet_sendmsg+0x106/0x1d0 [<ffffffff81718fd5>] ? inet_sendmsg+0x5/0x1d0 [<ffffffff8166d078>] sock_sendmsg+0x38/0x50 [<ffffffff8166d4d6>] SYSC_sendto+0xf6/0x170 [<ffffffff8100201b>] ? trace_hardirqs_on_thunk+0x1b/0x1d [<ffffffff8166e38e>] SyS_sendto+0xe/0x10 [<ffffffff817bebe5>] entry_SYSCALL_64_fastpath+0x18/0xa8 Code: 06 48 83 3f 00 75 26 48 8b 87 d8 00 00 00 2b 87 d0 00 00 00 48 39 d0 72 14 8b 87 e4 00 00 00 83 f8 01 75 09 48 83 7f 18 00 74 9a <0f> 0b 41 8b 86 cc 00 00 00 49 8# RIP [<ffffffff8175468a>] ip6_fragment+0x73a/0xc50 RSP <ffff880072803120> Fixes: 029f7f3b8701 ("netfilter: ipv6: nf_defrag: avoid/free clone operations") Reported-by: Daniele Di Proietto <diproiettod@vmware.com> Signed-off-by: Joe Stringer <joe@ovn.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-20Revert "Prevent NUll pointer dereference with two PHYs on cpsw"Andrew Goodbody1-16/+15
This reverts commit cfe255600154f0072d4a8695590dbd194dfd1aeb This can result in a "Unable to handle kernel paging request" during boot. This was due to using an uninitialised struct member, data->slaves. Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-19VSOCK: Only check error on skb_recv_datagram when skb is NULLJorgen Hansen1-5/+2
If skb_recv_datagram returns an skb, we should ignore the err value returned. Otherwise, datagram receives will return EAGAIN when they have to wait for a datagram. Acked-by: Adit Ranadive <aditr@vmware.com> Signed-off-by: Jorgen Hansen <jhansen@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-19cls_cgroup: get sk_classid only from full socketsKonstantin Khlebnikov1-2/+5
skb->sk could point to timewait or request socket which has no sk_classid. Detected as "BUG: KASAN: slab-out-of-bounds in cls_cgroup_classify". Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-19net/mlx4_en: do batched put_page using atomic_subKonstantin Khlebnikov1-2/+6
This patch fixes couple error paths after allocation failures. Atomic set of page reference counter is safe only if it is zero, otherwise set can race with any speculative get_page_unless_zero. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-19net/mlx4_en: allocate non 0-order pages for RX ring with __GFP_NOMEMALLOCKonstantin Khlebnikov1-1/+1
High order pages are optional here since commit 51151a16a60f ("mlx4: allow order-0 memory allocations in RX path"), so here is no reason for depleting reserves. Generic __netdev_alloc_frag() implements the same logic. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-19platform:x86 decouple telemetry driver from the optional IPC resourcesAubrey Li2-42/+54
Currently the optional IPC resources prevent telemetry driver from probing if these resources are not in ACPI table. This patch decouples telemetry driver from these optional resources, so that telemetry driver has dependency only on the necessary ACPI resources. Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2016-04-19ARM: 8564/1: fix cpu feature extracting helperVladimir Murzin1-1/+1
Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed quantities" introduced helper to extract signed quantities of 4-bit blocks. However, with a current code feature with value 0b1000 isn't rejected as negative. So fix the "if" condition. Reported-by: Jonathan Brawn <Jon.Brawn@arm.com> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-19ARM: 8563/1: fix demoting HWCAP_SWPVladimir Murzin1-1/+1
Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed quantities" accidentally altered cpuid register used to demote HWCAP_SWP. ARM ARM says that SyncPrim_instrs bits in ID_ISAR3 should be used with SynchPrim_instrs_frac from ID_ISAR4. So, follow this rule. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-18cpufreq: Abort cpufreq_update_current_freq() for cpufreq_suspended setRafael J. Wysocki1-0/+3
Since governor operations are generally skipped if cpufreq_suspended is set, cpufreq_start_governor() should do nothing in that case. That function is called in the cpufreq_online() path, and may also be called from cpufreq_offline() in some cases, which are invoked by the nonboot CPUs disabing/enabling code during system suspend to RAM and resume. That happens when all devices have been suspended, so if the cpufreq driver relies on things like I2C to get the current frequency, it may not be ready to do that then. To prevent problems from happening for this reason, make cpufreq_update_current_freq(), which is the only function invoked by cpufreq_start_governor() that doesn't check cpufreq_suspended already, return 0 upfront if cpufreq_suspended is set. Fixes: 3bbf8fe3ae08 (cpufreq: Always update current frequency before startig governor) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
2016-04-18devpts: clean up interface to pty driversLinus Torvalds3-82/+64
This gets rid of the horrible notion of having that struct inode *ptmx_inode be the linchpin of the interface between the pty code and devpts. By de-emphasizing the ptmx inode, a lot of things actually get cleaner, and we will have a much saner way forward. In particular, this will allow us to associate with any particular devpts instance at open-time, and not be artificially tied to one particular ptmx inode. The patch itself is actually fairly straightforward, and apart from some locking and return path cleanups it's pretty mechanical: - the interfaces that devpts exposes all take "struct pts_fs_info *" instead of "struct inode *ptmx_inode" now. NOTE! The "struct pts_fs_info" thing is a completely opaque structure as far as the pty driver is concerned: it's still declared entirely internally to devpts. So the pty code can't actually access it in any way, just pass it as a "cookie" to the devpts code. - the "look up the pts fs info" is now a single clear operation, that also does the reference count increment on the pts superblock. So "devpts_add/del_ref()" is gone, and replaced by a "lookup and get ref" operation (devpts_get_ref(inode)), along with a "put ref" op (devpts_put_ref()). - the pty master "tty->driver_data" field now contains the pts_fs_info, not the ptmx inode. - because we don't care about the ptmx inode any more as some kind of base index, the ref counting can now drop the inode games - it just gets the ref on the superblock. - the pts_fs_info now has a back-pointer to the super_block. That's so that we can easily look up the information we actually need. Although quite often, the pts fs info was actually all we wanted, and not having to look it up based on some magical inode makes things more straightforward. In particular, now that "devpts_get_ref(inode)" operation should really be the *only* place we need to look up what devpts instance we're associated with, and we do it exactly once, at ptmx_open() time. The other side of this is that one ptmx node could now be associated with multiple different devpts instances - you could have a single /dev/ptmx node, and then have multiple mount namespaces with their own instances of devpts mounted on /dev/pts/. And that's all perfectly sane in a model where we just look up the pts instance at open time. This will eventually allow us to get rid of our odd single-vs-multiple pts instance model, but this patch in itself changes no semantics, only an internal binding model. Cc: Eric Biederman <ebiederm@xmission.com> Cc: Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Serge Hallyn <serge.hallyn@ubuntu.com> Cc: Willy Tarreau <w@1wt.eu> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Cc: Jann Horn <jann@thejh.net> Cc: Greg KH <greg@kroah.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: Florian Weimer <fw@deneb.enyo.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-18drm/i915: Use fw_domains_put_with_fifo() on HSWVille Syrjälä1-1/+5
HSW still has the wake FIFO, so let's check it. Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Deepak S <deepak.s@linux.intel.com> Fixes: 05a2fb157e44 ("drm/i915: Consolidate forcewake code") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1460633942-24013-1-git-send-email-ville.syrjala@linux.intel.com Cc: stable@vger.kernel.org Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (cherry picked from commit 3d7d0c85e41afb5a05e98b3a8a72c38357f02594) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915: Force ringbuffers to not be at offset 0Chris Wilson1-2/+5
For reasons unknown Sandybridge GT1 (at least) will eventually hang when it encounters a ring wraparound at offset 0. The test case that reproduces the bug reliably forces a large number of interrupted context switches, thereby causing very frequent ring wraparounds, but there are similar bug reports in the wild with the same symptoms, seqno writes stop just before the wrap and the ringbuffer at address 0. It is also timing crucial, but adding various delays hasn't helped pinpoint where the window lies. Whether the fault is restricted to the ringbuffer itself or the GTT addressing is unclear, but moving the ringbuffer fixes all the hangs I have been able to reproduce. References: (e.g.) https://bugs.freedesktop.org/show_bug.cgi?id=93262 Testcase: igt/gem_exec_whisper/render-contexts-interruptible #snb-gt1 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1460565315-7748-12-git-send-email-chris@chris-wilson.co.uk (cherry picked from commit a687a43a48f0f91ba37dce5a14b467258ed6f035) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915: Adjust size of PIPE_CONTROL used for gen8 render seqno writeMichał Winiarski1-2/+8
We started to use PIPE_CONTROL to write render ring seqno in order to combat seqno write vs interrupt generation problems. This was introduced by commit 7c17d377374d ("drm/i915: Use ordered seqno write interrupt generation on gen8+ execlists"). On gen8+ size of PIPE_CONTROL with Post Sync Operation should be 6 dwords. When we're using older 5-dword variant it's possible to observe inconsistent values written by PIPE_CONTROL with Post Sync Operation from user batches, resulting in rendering corruptions. v2: Fix BAT failures v3: Comments on alignment and thrashing high dword of seqno (Chris) v4: Updated commit msg (Mika) Testcase: igt/gem_pipe_control_store_loop/*-qword-write Issue: VIZ-7393 Cc: stable@vger.kernel.org Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Signed-off-by: Michał Winiarski <michal.winiarski@intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Tested-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1460469115-26002-1-git-send-email-michal.winiarski@intel.com (cherry picked from commit ce81a65c79d6012a384563caf76d47e28947a347) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915/skl: Fix spurious gpu hang with gt3/gt4 revsMika Kuoppala1-2/+3
Experiments with heaven 4.0 benchmark and skylake gt3e (rev 0xa) suggest that WaForceContextSaveRestoreNonCoherent is needed for all revs. Extending this to all revs cures a gpu hang with rev 0xa when running heaven4.0 gpu benchmark. We have been here before, with problems enabling gt4e and extending up to revision F0 instead of false claims of bspec of E0 only. See commit <e238659ddd88> ("drm/i915/skl: Default to noncoherent access up to F0"). In retrospect we should have covered this with this big blanket back then already, as E0 vs F0 discrepancy was suspicious enough. Previously the WaForceEnableNonCoherent has been tied to context non-coherence, atleast in relevant hsds. So keep this tie and extended this alongside. Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Ben Widawsky <benjamin.widawsky@intel.com> Cc: Timo Aaltonen <tjaalton@ubuntu.com> Cc: stable@vger.kernel.org Reported-by: Mike Lothian <mike@fireburn.co.uk> References: https://bugs.freedesktop.org/show_bug.cgi?id=93491 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ben Widawsky <benjamin.widawsky@intel.com> Tested-by: Timo Aaltonen <tjaalton@ubuntu.com> Link: http://patchwork.freedesktop.org/patch/msgid/1459860977-27751-2-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 97ea6be161c55dec896b65c95157d953c330ae05) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915/skl: Fix rc6 based gpu/system hangMika Kuoppala1-2/+3
For all gt3 and gt4 skylake variants, extend the usage of WaRsDisableCoarsePowerGating for all revisions. Without this gt3 and gt4 skylakes up to atleast rev 0xa can gpu hang or system hang. Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Ben Widawsky <benjamin.widawsky@intel.com> Cc: Timo Aaltonen <tjaalton@ubuntu.com> Cc: <stable@vger.kernel.org> Reported-by: Mikael Djurfeldt <mikael@djurfeldt.com> References: https://bugs.freedesktop.org/show_bug.cgi?id=94161 Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ben Widawsky <benjamin.widawsky@intel.com> Tested-by: Timo Aaltonen <tjaalton@ubuntu.com> Link: http://patchwork.freedesktop.org/patch/msgid/1459860977-27751-1-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 185c66e57ce725afeb58a3cfa48547706af3a7af) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915/userptr: Hold mmref whilst calling get-user-pagesChris Wilson1-12/+17
Holding a reference to the containing task_struct is not sufficient to prevent the mm_struct from being reaped under memory pressure. If this happens whilst we are calling get_user_pages(), explosions erupt - sometimes an immediate GPF, sometimes page flag corruption. To prevent the target mm from being reaped as we are reading from it, acquire a reference before we begin. Testcase: igt/gem_shrink/*userptr Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: stable@vger.kernel.org Reviewed-by: Michał Winiarski <michal.winiarski@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1459864801-28606-2-git-send-email-chris@chris-wilson.co.uk (cherry picked from commit 40313f0cd0b711a7a5905e5182422799e157d8aa) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915: Fixup the free space logic in ring_prepareAkash Goel2-6/+6
Currently for the case where there is enough space at the end of Ring buffer for accommodating only the base request, the wrapround is done immediately and as a result the base request gets added at the start of Ring buffer. But there may not be enough free space at the beginning to accommodate the base request, as before the wraparound, the wait was effectively done for the reserved_size free space from the start of Ring buffer. In such a case there is a potential of Ring buffer overflow, the instructions at the head of Ring (ACTHD) can get overwritten. Since the base request can fit in the remaining space, there is no need to wraparound immediately. The wraparound will anyway happen later when the reserved part starts getting used. Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Akash Goel <akash.goel@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1457688402-10411-1-git-send-email-akash.goel@intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org (cherry picked from commit 782f6bc0aba037436d6a04d19b23f8b61020a576) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18drm/i915/skl+: Use plane size for relative data rate calculationKumar, Mahesh1-14/+28
Use plane size for relative data rate calculation. don't always use pipe source width & height. adjust height & width according to rotation. use plane size for watermark calculations also. v2: Address Matt's comments. Use intel_plane_state->visible to avoid divide-by-zero error. Where FB was present but not visible so causing total data rate to be zero, hence divide-by-zero. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93917 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94044 Cc: drm-intel-fixes@lists.freedesktop.org Signed-off-by: Kumar, Mahesh <mahesh1.kumar@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1459956399-1296-1-git-send-email-matthew.d.roper@intel.com (cherry picked from commit a280f7dd9f1a85eed242d0f62498bfc11520a1a3) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-04-18omapfb: panel-sharp-ls037v7dw01: fix check of gpio_to_desc() return valueVladimir Zapolskiy1-8/+4
The change fixes a check of gpio_to_desc() return value, the function returns either a valid pointer to struct gpio_desc or NULL, this makes IS_ERR() check invalid and may lead to a NULL pointer dereference in runtime. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-04-18video: ARM CLCD: runtime check for VersatileLinus Walleij1-7/+8
The current compile-time check for inversed IENB/CNTL does not work in multiplatform boots: as soon as versatile is included in the build, the IENB/CNTL is switched and breaks graphics. Convert this to a runtime switch. Cc: stable@vger.kernel.org Cc: Rob Herring <robh@kernel.org> Cc: Russell King <linux@arm.linux.org.uk> Fixes: a29da136de34 ("ARM: versatile: convert to multi-platform") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2016-04-17Linux 4.6-rc4Linus Torvalds1-1/+1
2016-04-17macsec: fix crypto Kconfig dependencyArnd Bergmann1-0/+1
The new MACsec driver uses the AES crypto algorithm, but can be configured even if CONFIG_CRYPTO is disabled, leading to a build error: warning: (MAC80211 && MACSEC) selects CRYPTO_GCM which has unmet direct dependencies (CRYPTO) warning: (BT && CEPH_LIB && INET && MAC802154 && MAC80211 && BLK_DEV_RBD && MACSEC && AIRO_CS && LIBIPW && HOSTAP && USB_WUSB && RTLLIB_CRYPTO_CCMP && FS_ENCRYPTION && EXT4_ENCRYPTION && CEPH_FS && BIG_KEYS && ENCRYPTED_KEYS) selects CRYPTO_AES which has unmet direct dependencies (CRYPTO) crypto/built-in.o: In function `gcm_enc_copy_hash': aes_generic.c:(.text+0x2b8): undefined reference to `crypto_xor' aes_generic.c:(.text+0x2dc): undefined reference to `scatterwalk_map_and_copy' This adds an explicit 'select CRYPTO' statement the way that other drivers handle it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver") Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-17dm cache metadata: fix cmd_read_lock() acquiring write lockAhmed Samy1-2/+2
Commit 9567366fefdd ("dm cache metadata: fix READ_LOCK macros and cleanup WRITE_LOCK macros") uses down_write() instead of down_read() in cmd_read_lock(), yet up_read() is used to release the lock in READ_UNLOCK(). Fix it. Fixes: 9567366fefdd ("dm cache metadata: fix READ_LOCK macros and cleanup WRITE_LOCK macros") Cc: stable@vger.kernel.org Signed-off-by: Ahmed Samy <f.fallen45@gmail.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2016-04-16net: bcmgenet: device stats are unsigned longEric Dumazet1-1/+5
On 64bit kernels, device stats are 64bit wide, not 32bit. Fixes: 1c1008c793fa4 ("net: bcmgenet: add main driver file") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-16net: dsa: mv88e6xxx: share the same default FDBVivien Didelot1-26/+2
For hardware cross-chip bridging to work, user ports *and* DSA ports need to share a common address database, in order to switch a frame to the correct interconnected device. This is currently working for VLAN filtering aware systems, since Linux will implement a bridge group as a 802.1Q VLAN, which has its own FDB, including DSA and CPU links as members. However when the system doesn't support VLAN filtering, Linux only relies on the port-based VLAN to implement a bridge group. To fix hardware cross-chip bridging for such systems, set the same default address database 0 for user and DSA ports, instead of giving them all a different default database. Note that the bridging code prevents frames to egress between unbridged ports, and flushes FDB entries of a port when changing its STP state. Also note that the FID 0 is special and means "all" for ATU operations, but it's OK since it is used as a default forwarding address database. Fixes: 2db9ce1fd9a3 ("net: dsa: mv88e6xxx: assign default FDB to ports") Fixes: 466dfa077022 ("net: dsa: mv88e6xxx: assign dynamic FDB to bridges") Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-16net: dsa: mv88e6xxx: enable SA learning on DSA portsVivien Didelot1-2/+2
In multi-chip systems, DSA Tag ports must learn SA addresses in order to correctly switch frames between interconnected chips. This fixes cross-chip hardware bridging in a VLAN filtering aware system, because a bridge group gets implemented as an hardware 802.1Q VLAN and thus DSA and user ports share the same FDB. Fixes: 4c7ea3c0791e ("net: dsa: mv88e6xxx: disable SA learning for DSA and CPU ports") Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-16net: dsa: mv88e6xxx: unlock DSA and CPU portsVivien Didelot1-1/+1
Locking a port generates an hardware interrupt when a new SA address is received. This enables CPU directed learning, which is needed for 802.1X MAC authentication. To disable automatic learning on a port, the only configuration needed is to set its Port Association Vector to all zero. Clear PAV when SA learning should be disabled instead of locking a port. Fixes: 4c7ea3c0791e ("net: dsa: mv88e6xxx: disable SA learning for DSA and CPU ports") Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-16RDS: Fix the atomicity for congestion map updatesantosh.shilimkar@oracle.com1-2/+2
Two different threads with different rds sockets may be in rds_recv_rcvbuf_delta() via receive path. If their ports both map to the same word in the congestion map, then using non-atomic ops to update it could cause the map to be incorrect. Lets use atomics to avoid such an issue. Full credit to Wengang <wen.gang.wang@oracle.com> for finding the issue, analysing it and also pointing out to offending code with spin lock based fix. Reviewed-by: Leon Romanovsky <leon@leon.nu> Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-16RDS: fix endianness for dp_ack_seqQing Huang1-1/+1
dp->dp_ack_seq is used in big endian format. We need to do the big endianness conversion when we assign a value in host format to it. Signed-off-by: Qing Huang <qing.huang@oracle.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-15vlan: pull on __vlan_insert_tag error path and fix csum correctionDaniel Borkmann1-2/+5
When __vlan_insert_tag() fails from skb_vlan_push() path due to the skb_cow_head(), we need to undo the __skb_push() in the error path as well that was done earlier to move skb->data pointer to mac header. Moreover, I noticed that when in the non-error path the __skb_pull() is done and the original offset to mac header was non-zero, we fixup from a wrong skb->data offset in the checksum complete processing. So the skb_postpush_rcsum() really needs to be done before __skb_pull() where skb->data still points to the mac header start and thus operates under the same conditions as in __vlan_insert_tag(). Fixes: 93515d53b133 ("net: move vlan pop/push functions into common code") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-15cpsw: Prevent NUll pointer dereference with two PHYsAndrew Goodbody1-15/+16
Adding a 2nd PHY to cpsw results in a NULL pointer dereference as below. Fix by maintaining a reference to each PHY node in slave struct instead of a single reference in the priv struct which was overwritten by the 2nd PHY. [ 17.870933] Unable to handle kernel NULL pointer dereference at virtual address 00000180 [ 17.879557] pgd = dc8bc000 [ 17.882514] [00000180] *pgd=9c882831, *pte=00000000, *ppte=00000000 [ 17.889213] Internal error: Oops: 17 [#1] ARM [ 17.893838] Modules linked in: [ 17.897102] CPU: 0 PID: 1657 Comm: connmand Not tainted 4.5.0-ge463dfb-dirty #11 [ 17.904947] Hardware name: Cambrionix whippet [ 17.909576] task: dc859240 ti: dc968000 task.ti: dc968000 [ 17.915339] PC is at phy_attached_print+0x18/0x8c [ 17.920339] LR is at phy_attached_info+0x14/0x18 [ 17.925247] pc : [<c042baec>] lr : [<c042bb74>] psr: 600f0113 [ 17.925247] sp : dc969cf8 ip : dc969d28 fp : dc969d18 [ 17.937425] r10: dda7a400 r9 : 00000000 r8 : 00000000 [ 17.942971] r7 : 00000001 r6 : ddb00480 r5 : ddb8cb34 r4 : 00000000 [ 17.949898] r3 : c0954cc0 r2 : c09562b0 r1 : 00000000 r0 : 00000000 [ 17.956829] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 17.964401] Control: 10c5387d Table: 9c8bc019 DAC: 00000051 [ 17.970500] Process connmand (pid: 1657, stack limit = 0xdc968210) [ 17.977059] Stack: (0xdc969cf8 to 0xdc96a000) [ 17.981692] 9ce0: dc969d28 dc969d08 [ 17.990386] 9d00: c038f9bc c038f6b4 ddb00480 dc969d34 dc969d28 c042bb74 c042bae4 00000000 [ 17.999080] 9d20: c09562b0 c0954cc0 dc969d5c dc969d38 c043ebfc c042bb6c 00000007 00000003 [ 18.007773] 9d40: ddb00000 ddb8cb58 ddb00480 00000001 dc969dec dc969d60 c0441614 c043ea68 [ 18.016465] 9d60: 00000000 00000003 00000000 fffffff4 dc969df4 0000000d 00000000 00000000 [ 18.025159] 9d80: dc969db4 dc969d90 c005dc08 c05839e0 dc969df4 0000000d ddb00000 00001002 [ 18.033851] 9da0: 00000000 00000000 dc969dcc dc969db8 c005ddf4 c005dbc8 00000000 00000118 [ 18.042544] 9dc0: dc969dec dc969dd0 ddb00000 c06db27c ffff9003 00001002 00000000 00000000 [ 18.051237] 9de0: dc969e0c dc969df0 c057c88c c04410dc dc969e0c ddb00000 ddb00000 00000001 [ 18.059930] 9e00: dc969e34 dc969e10 c057cb44 c057c7d8 ddb00000 ddb00138 00001002 beaeda20 [ 18.068622] 9e20: 00000000 00000000 dc969e5c dc969e38 c057cc28 c057cac0 00000000 dc969e80 [ 18.077315] 9e40: dda7a40c beaeda20 00000000 00000000 dc969ecc dc969e60 c05e36d0 c057cc14 [ 18.086007] 9e60: dc969e84 00000051 beaeda20 00000000 dda7a40c 00000014 ddb00000 00008914 [ 18.094699] 9e80: 30687465 00000000 00000000 00000000 00009003 00000000 00000000 00000000 [ 18.103391] 9ea0: 00001002 00008914 dd257ae0 beaeda20 c098a428 beaeda20 00000011 00000000 [ 18.112084] 9ec0: dc969edc dc969ed0 c05e4e54 c05e3030 dc969efc dc969ee0 c055f5ac c05e4cc4 [ 18.120777] 9ee0: beaeda20 dd257ae0 dc8ab4c0 00008914 dc969f7c dc969f00 c010b388 c055f45c [ 18.129471] 9f00: c071ca40 dd257ac0 c00165e8 dc968000 dc969f3c dc969f20 dc969f64 dc969f28 [ 18.138164] 9f20: c0115708 c0683ec8 dd257ac0 dd257ac0 dc969f74 dc969f40 c055f350 c00fc66c [ 18.146857] 9f40: dd82e4d0 00000011 00000000 00080000 dd257ac0 00000000 dc8ab4c0 dc8ab4c0 [ 18.155550] 9f60: 00008914 beaeda20 00000011 00000000 dc969fa4 dc969f80 c010bc34 c010b2fc [ 18.164242] 9f80: 00000000 00000011 00000002 00000036 c00165e8 dc968000 00000000 dc969fa8 [ 18.172935] 9fa0: c00163e0 c010bbcc 00000000 00000011 00000011 00008914 beaeda20 00009003 [ 18.181628] 9fc0: 00000000 00000011 00000002 00000036 00081018 00000001 00000000 beaedc10 [ 18.190320] 9fe0: 00083188 beaeda1c 00043a5d b6d29c0c 600b0010 00000011 00000000 00000000 [ 18.198989] Backtrace: [ 18.201621] [<c042bad8>] (phy_attached_print) from [<c042bb74>] (phy_attached_info+0x14/0x18) [ 18.210664] r3:c0954cc0 r2:c09562b0 r1:00000000 [ 18.215588] r4:ddb00480 [ 18.218322] [<c042bb60>] (phy_attached_info) from [<c043ebfc>] (cpsw_slave_open+0x1a0/0x280) [ 18.227293] [<c043ea5c>] (cpsw_slave_open) from [<c0441614>] (cpsw_ndo_open+0x544/0x674) [ 18.235874] r7:00000001 r6:ddb00480 r5:ddb8cb58 r4:ddb00000 [ 18.241944] [<c04410d0>] (cpsw_ndo_open) from [<c057c88c>] (__dev_open+0xc0/0x128) [ 18.249972] r9:00000000 r8:00000000 r7:00001002 r6:ffff9003 r5:c06db27c r4:ddb00000 [ 18.258255] [<c057c7cc>] (__dev_open) from [<c057cb44>] (__dev_change_flags+0x90/0x154) [ 18.266745] r5:00000001 r4:ddb00000 [ 18.270575] [<c057cab4>] (__dev_change_flags) from [<c057cc28>] (dev_change_flags+0x20/0x50) [ 18.279523] r9:00000000 r8:00000000 r7:beaeda20 r6:00001002 r5:ddb00138 r4:ddb00000 [ 18.287811] [<c057cc08>] (dev_change_flags) from [<c05e36d0>] (devinet_ioctl+0x6ac/0x76c) [ 18.296483] r9:00000000 r8:00000000 r7:beaeda20 r6:dda7a40c r5:dc969e80 r4:00000000 [ 18.304762] [<c05e3024>] (devinet_ioctl) from [<c05e4e54>] (inet_ioctl+0x19c/0x1c8) [ 18.312882] r10:00000000 r9:00000011 r8:beaeda20 r7:c098a428 r6:beaeda20 r5:dd257ae0 [ 18.321235] r4:00008914 [ 18.323956] [<c05e4cb8>] (inet_ioctl) from [<c055f5ac>] (sock_ioctl+0x15c/0x2d8) [ 18.331829] [<c055f450>] (sock_ioctl) from [<c010b388>] (do_vfs_ioctl+0x98/0x8d0) [ 18.339765] r7:00008914 r6:dc8ab4c0 r5:dd257ae0 r4:beaeda20 [ 18.345822] [<c010b2f0>] (do_vfs_ioctl) from [<c010bc34>] (SyS_ioctl+0x74/0x84) [ 18.353573] r10:00000000 r9:00000011 r8:beaeda20 r7:00008914 r6:dc8ab4c0 r5:dc8ab4c0 [ 18.361924] r4:00000000 [ 18.364653] [<c010bbc0>] (SyS_ioctl) from [<c00163e0>] (ret_fast_syscall+0x0/0x3c) [ 18.372682] r9:dc968000 r8:c00165e8 r7:00000036 r6:00000002 r5:00000011 r4:00000000 [ 18.380960] Code: e92dd810 e24cb010 e24dd010 e59b4004 (e5902180) [ 18.387580] ---[ end trace c80529466223f3f3 ]--- Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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