- 27 Jun, 2017 34 commits
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Thomas Gleixner authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 478fe303 upstream. memcg_propagate_slab_attrs() abuses the sysfs attribute file functions to propagate settings from the root kmem_cache to a newly created kmem_cache. It does that with: attr->show(root, buf); attr->store(new, buf, strlen(bug); Aside of being a lazy and absurd hackery this is broken because it does not check the return value of the show() function. Some of the show() functions return 0 w/o touching the buffer. That means in such a case the store function is called with the stale content of the previous show(). That causes nonsense like invoking kmem_cache_shrink() on a newly created kmem_cache. In the worst case it would cause handing in an uninitialized buffer. This should be rewritten proper by adding a propagate() callback to those slub_attributes which must be propagated and avoid that insane conversion to and from ASCII, but that's too large for a hot fix. Check at least the return value of the show() function, so calling store() with stale content is prevented. Steven said: "It can cause a deadlock with get_online_cpus() that has been uncovered by recent cpu hotplug and lockdep changes that Thomas and Peter have been doing. Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(cpu_hotplug.lock); lock(slab_mutex); lock(cpu_hotplug.lock); lock(slab_mutex); *** DEADLOCK ***" Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1705201244540.2255@nanosSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Reported-by:
Steven Rostedt <rostedt@goodmis.org> Acked-by:
David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Stefan Bader <stefan.bader@canonical.com> Signed-off-by:
Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
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Alexander Tsoy authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 1fc2e41f upstream. This model is actually called 92XXM2-8 in Windows driver. But since pin configs for M22 and M28 are identical, just reuse M22 quirk. Fixes external microphone (tested) and probably docking station ports (not tested). Signed-off-by:
Alexander Tsoy <alexander@tsoy.me> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Nicolas Iooss authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit ff5a2016 upstream. Commit 5b5e0928 ("lib/vsprintf.c: remove %Z support") removed some usages of format %Z but forgot "%.2Zx". This makes clang 4.0 reports a -Wformat-extra-args warning because it does not know about %Z. Replace %Z with %z. Link: http://lkml.kernel.org/r/20170520090946.22562-1-nicolas.iooss_linux@m4x.orgSigned-off-by:
Nicolas Iooss <nicolas.iooss_linux@m4x.org> Cc: Harald Welte <laforge@gnumonks.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Lyude authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 3d18e337 upstream. We end up reading the interrupt register for HPD5, and then writing it to HPD6 which on systems without anything using HPD5 results in permanently disabling hotplug on one of the display outputs after the first time we acknowledge a hotplug interrupt from the GPU. This code is really bad. But for now, let's just fix this. I will hopefully have a large patch series to refactor all of this soon. Reviewed-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
Lyude <lyude@redhat.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Alex Deucher authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 58d7e3e4 upstream. Even if the vblank period would allow it, it still seems to be problematic on some cards. v2: fix logic inversion (Nils) bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868Acked-by:
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Ram Pai authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit f2e767bb upstream. The firmware or device, possibly under a heavy I/O load, can return on a partial unaligned boundary. Scsi-ml expects these requests to be completed on an alignment boundary. Scsi-ml blindly requeues the I/O without checking the alignment boundary of the I/O request for the remaining bytes. This leads to errors, since devices cannot perform non-aligned read/write operations. This patch fixes the issue in the driver. It aligns unaligned completions of FS requests, by truncating them to the nearest alignment boundary. [mkp: simplified if statement] Reported-by:
Mauricio Faria De Oliveira <mauricfo@linux.vnet.ibm.com> Signed-off-by:
Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com> Signed-off-by:
Ram Pai <linuxram@us.ibm.com> Acked-by:
Sreekanth Reddy <Sreekanth.Reddy@broadcom.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Sasha Levin <alexander.levin@verizon.com> Signed-off-by:
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Jason Gerecke authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 2ac97f0f upstream. The following Smatch complaint was generated in response to commit 2a6cdbdd ("HID: wacom: Introduce new 'touch_input' device"): drivers/hid/wacom_wac.c:1586 wacom_tpc_irq() error: we previously assumed 'wacom->touch_input' could be null (see line 1577) The 'touch_input' and 'pen_input' variables point to the 'struct input_dev' used for relaying touch and pen events to userspace, respectively. If a device does not have a touch interface or pen interface, the associated input variable is NULL. The 'wacom_tpc_irq()' function is responsible for forwarding input reports to a more-specific IRQ handler function. An unknown report could theoretically be mistaken as e.g. a touch report on a device which does not have a touch interface. This can be prevented by only calling the pen/touch functions are called when the pen/touch pointers are valid. Fixes: 2a6cdbdd ("HID: wacom: Introduce new 'touch_input' device") Signed-off-by:
Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by:
Ping Cheng <ping.cheng@wacom.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Srinath Mannam authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit f5f968f2 upstream. The stingray SDHCI hardware supports ACMD12 and automatically issues after multi block transfer completed. If ACMD12 in SDHCI is disabled, spurious tx done interrupts are seen on multi block read command with below error message: Got data interrupt 0x00000002 even though no data operation was in progress. This patch uses SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 to enable ACM12 support in SDHCI hardware and suppress spurious interrupt. Signed-off-by:
Srinath Mannam <srinath.mannam@broadcom.com> Reviewed-by:
Ray Jui <ray.jui@broadcom.com> Reviewed-by:
Scott Branden <scott.branden@broadcom.com> Acked-by:
Adrian Hunter <adrian.hunter@intel.com> Fixes: b580c52d ("mmc: sdhci-iproc: add IPROC SDHCI driver") Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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Sebastian Reichel authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 5165da59 upstream. Since v4.9 i2c-tiny-usb generates the below call trace and longer works, since it can't communicate with the USB device. The reason is, that since v4.9 the USB stack checks, that the buffer it should transfer is DMA capable. This was a requirement since v2.2 days, but it usually worked nevertheless. [ 17.504959] ------------[ cut here ]------------ [ 17.505488] WARNING: CPU: 0 PID: 93 at drivers/usb/core/hcd.c:1587 usb_hcd_map_urb_for_dma+0x37c/0x570 [ 17.506545] transfer buffer not dma capable [ 17.507022] Modules linked in: [ 17.507370] CPU: 0 PID: 93 Comm: i2cdetect Not tainted 4.11.0-rc8+ #10 [ 17.508103] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 [ 17.509039] Call Trace: [ 17.509320] ? dump_stack+0x5c/0x78 [ 17.509714] ? __warn+0xbe/0xe0 [ 17.510073] ? warn_slowpath_fmt+0x5a/0x80 [ 17.510532] ? nommu_map_sg+0xb0/0xb0 [ 17.510949] ? usb_hcd_map_urb_for_dma+0x37c/0x570 [ 17.511482] ? usb_hcd_submit_urb+0x336/0xab0 [ 17.511976] ? wait_for_completion_timeout+0x12f/0x1a0 [ 17.512549] ? wait_for_completion_timeout+0x65/0x1a0 [ 17.513125] ? usb_start_wait_urb+0x65/0x160 [ 17.513604] ? usb_control_msg+0xdc/0x130 [ 17.514061] ? usb_xfer+0xa4/0x2a0 [ 17.514445] ? __i2c_transfer+0x108/0x3c0 [ 17.514899] ? i2c_transfer+0x57/0xb0 [ 17.515310] ? i2c_smbus_xfer_emulated+0x12f/0x590 [ 17.515851] ? _raw_spin_unlock_irqrestore+0x11/0x20 [ 17.516408] ? i2c_smbus_xfer+0x125/0x330 [ 17.516876] ? i2c_smbus_xfer+0x125/0x330 [ 17.517329] ? i2cdev_ioctl_smbus+0x1c1/0x2b0 [ 17.517824] ? i2cdev_ioctl+0x75/0x1c0 [ 17.518248] ? do_vfs_ioctl+0x9f/0x600 [ 17.518671] ? vfs_write+0x144/0x190 [ 17.519078] ? SyS_ioctl+0x74/0x80 [ 17.519463] ? entry_SYSCALL_64_fastpath+0x1e/0xad [ 17.519959] ---[ end trace d047c04982f5ac50 ]--- Signed-off-by:
Sebastian Reichel <sebastian.reichel@collabora.co.uk> Reviewed-by:
Till Harbaum <till@harbaum.org> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Vlad Yasevich authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit 35d2f80b upstream. It appears that TCP checksum offloading has been broken for Q-in-Q vlans. The behavior was execerbated by the series commit afb0bc97 ("Merge branch 'stacked_vlan_tso'") that that enabled accleleration features on stacked vlans. However, event without that series, it is possible to trigger this issue. It just requires a lot more specialized configuration. The root cause is the interaction between how netdev_intersect_features() works, the features actually set on the vlan devices and HW having the ability to run checksum with longer headers. The issue starts when netdev_interesect_features() replaces NETIF_F_HW_CSUM with a combination of NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM, if the HW advertises IP|IPV6 specific checksums. This happens for tagged and multi-tagged packets. However, HW that enables IP|IPV6 checksum offloading doesn't gurantee that packets with arbitrarily long headers can be checksummed. This patch disables IP|IPV6 checksums on the packet for multi-tagged packets. CC: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> CC: Michal Kubecek <mkubecek@suse.cz> Signed-off-by:
Vladislav Yasevich <vyasevic@redhat.com> Acked-by:
Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Andrew Lunn authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit f2899788 upstream. The 88m1101 has an errata when configuring autoneg. However, it was being applied to many other Marvell PHYs as well. Limit its scope to just the 88m1101. Fixes: 76884679 ("phylib: Add support for Marvell 88e1111S and 88e1145") Reported-by:
Daniel Walker <danielwa@cisco.com> Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Acked-by:
Harini Katakam <harinik@xilinx.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Eric Dumazet authored
BugLink: http://bugs.launchpad.net/bugs/1697001 commit f6ba8d33 upstream. I should have known that lowering skb->truesize was dangerous :/ In case packets are not leaving the host via a standard Ethernet device, but looped back to local sockets, bad things can happen, as reported by Michael Madsen ( https://bugzilla.kernel.org/show_bug.cgi?id=195713 ) So instead of tweaking skb->truesize, lets change skb->destructor and keep a reference on the owner socket via its sk_refcnt. Fixes: f2f872f9 ("netem: Introduce skb_orphan_partial() helper") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
Michael Madsen <mkm@nabto.com> Signed-off-by:
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Eric Dumazet authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 3fb07daf ] Andrey Konovalov reported crashes in ipv4_mtu() I could reproduce the issue with KASAN kernels, between 10.246.7.151 and 10.246.7.152 : 1) 20 concurrent netperf -t TCP_RR -H 10.246.7.152 -l 1000 & 2) At the same time run following loop : while : do ip ro add 10.246.7.152 dev eth0 src 10.246.7.151 mtu 1500 ip ro del 10.246.7.152 dev eth0 src 10.246.7.151 mtu 1500 done Cong Wang attempted to add back rt->fi in commit 82486aa6 ("ipv4: restore rt->fi for reference counting") but this proved to add some issues that were complex to solve. Instead, I suggested to add a refcount to the metrics themselves, being a standalone object (in particular, no reference to other objects) I tried to make this patch as small as possible to ease its backport, instead of being super clean. Note that we believe that only ipv4 dst need to take care of the metric refcount. But if this is wrong, this patch adds the basic infrastructure to extend this to other families. Many thanks to Julian Anastasov for reviewing this patch, and Cong Wang for his efforts on this problem. Fixes: 2860583f ("ipv4: Kill rt->fi") Signed-off-by:
Andrey Konovalov <andreyknvl@google.com> Reviewed-by:
Julian Anastasov <ja@ssi.bg> Acked-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
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Davide Caratti authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 804ec7eb ] sometimes ICMP replies to INIT chunks are ignored by the client, even if the encapsulated SCTP headers match an open socket. This happens when the ICMP packet is carried by a paged skb: use skb_header_pointer() to read packet contents beyond the SCTP header, so that chunk header and initiate tag are validated correctly. v2: - don't use skb_header_pointer() to read the transport header, since icmp_socket_deliver() already puts these 8 bytes in the linear area. - change commit message to make specific reference to INIT chunks. Signed-off-by:
Davide Caratti <dcaratti@redhat.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by:
Vlad Yasevich <vyasevich@gmail.com> Reviewed-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
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Wei Wang authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit ba615f67 ] Fastopen API should be used to perform fastopen operations on the TCP socket. It does not make sense to use fastopen API to perform disconnect by calling it with AF_UNSPEC. The fastopen data path is also prone to race conditions and bugs when using with AF_UNSPEC. One issue reported and analyzed by Vegard Nossum is as follows: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Thread A: Thread B: ------------------------------------------------------------------------ sendto() - tcp_sendmsg() - sk_stream_memory_free() = 0 - goto wait_for_sndbuf - sk_stream_wait_memory() - sk_wait_event() // sleep | sendto(flags=MSG_FASTOPEN, dest_addr=AF_UNSPEC) | - tcp_sendmsg() | - tcp_sendmsg_fastopen() | - __inet_stream_connect() | - tcp_disconnect() //because of AF_UNSPEC | - tcp_transmit_skb()// send RST | - return 0; // no reconnect! | - sk_stream_wait_connect() | - sock_error() | - xchg(&sk->sk_err, 0) | - return -ECONNRESET - ... // wake up, see sk->sk_err == 0 - skb_entail() on TCP_CLOSE socket If the connection is reopened then we will send a brand new SYN packet after thread A has already queued a buffer. At this point I think the socket internal state (sequence numbers etc.) becomes messed up. When the new connection is closed, the FIN-ACK is rejected because the sequence number is outside the window. The other side tries to retransmit, but __tcp_retransmit_skb() calls tcp_trim_head() on an empty skb which corrupts the skb data length and hits a BUG() in copy_and_csum_bits(). +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Hence, this patch adds a check for AF_UNSPEC in the fastopen data path and return EOPNOTSUPP to user if such case happens. Fixes: cf60af03 ("tcp: Fast Open client - sendmsg(MSG_FASTOPEN)") Reported-by:
Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by:
Wei Wang <weiwan@google.com> Signed-off-by:
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Vlad Yasevich authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 2836b4f2 ] Since virtio does not provide it's own ndo_features_check handler, TSO, and now checksum offload, are disabled for stacked vlans. Re-enable the support and let the host take care of it. This restores/improves Guest-to-Guest performance over Q-in-Q vlans. Acked-by:
Jason Wang <jasowang@redhat.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Vlad Yasevich authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit cc6e9de6 ] At least some of the be2net cards do not seem to be capabled of performing checksum offload computions on Q-in-Q packets. In these case, the recevied checksum on the remote is invalid and TCP syn packets are dropped. This patch adds a call to check disbled acceleration features on Q-in-Q tagged traffic. CC: Sathya Perla <sathya.perla@broadcom.com> CC: Ajit Khaparde <ajit.khaparde@broadcom.com> CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> CC: Somnath Kotur <somnath.kotur@broadcom.com> Signed-off-by:
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Xin Long authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 6d18c732 ] Since commit 76b91c32 ("bridge: stp: when using userspace stp stop kernel hello and hold timers"), bridge would not start hello_timer if stp_enabled is not KERNEL_STP when br_dev_open. The problem is even if users set stp_enabled with KERNEL_STP later, the timer will still not be started. It causes that KERNEL_STP can not really work. Users have to re-ifup the bridge to avoid this. This patch is to fix it by starting br->hello_timer when enabling KERNEL_STP in br_stp_start. As an improvement, it's also to start hello_timer again only when br->stp_enabled is KERNEL_STP in br_hello_timer_expired, there is no reason to start the timer again when it's NO_STP. Fixes: 76b91c32 ("bridge: stp: when using userspace stp stop kernel hello and hold timers") Reported-by:
Haidong Li <haili@redhat.com> Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by:
Ivan Vecera <cera@cera.cz> Signed-off-by:
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Bjørn Mork authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 486181bc ] In their infinite wisdom, and never ending quest for end user frustration, Lenovo has decided to use a new USB device ID for the wwan modules in their 2017 laptops. The actual hardware is still the Sierra Wireless EM7455 or EM7430, depending on region. Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
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Tobias Jungel authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit a2858602 ] Currently it is allowed to set the default pvid of a bridge to a value above VLAN_VID_MASK (0xfff). This patch adds a check to br_validate and returns -EINVAL in case the pvid is out of bounds. Reproduce by calling: [root@test ~]# ip l a type bridge [root@test ~]# ip l a type dummy [root@test ~]# ip l s bridge0 type bridge vlan_filtering 1 [root@test ~]# ip l s bridge0 type bridge vlan_default_pvid 9999 [root@test ~]# ip l s dummy0 master bridge0 [root@test ~]# bridge vlan port vlan ids bridge0 9999 PVID Egress Untagged dummy0 9999 PVID Egress Untagged Fixes: 0f963b75 ("bridge: netlink: add support for default_pvid") Acked-by:
Tobias Jungel <tobias.jungel@bisdn.de> Acked-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
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David Ahern authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit f6c5775f ] In general, rtnetlink dumps do not anticipate failure to dump a single object (e.g., link or route) on a single pass. As both route and link objects have grown via more attributes, that is no longer a given. netlink dumps can handle a failure if the dump function returns an error; specifically, netlink_dump adds the return code to the response if it is <= 0 so userspace is notified of the failure. The missing piece is the rtnetlink dump functions returning the error. Fix route and link dump functions to return the errors if no object is added to an skb (detected by skb->len != 0). IPv6 route dumps (rt6_dump_route) already return the error; this patch updates IPv4 and link dumps. Other dump functions may need to be ajusted as well. Reported-by:
Jan Moskyto Matejka <mq@ucw.cz> Signed-off-by:
David Ahern <dsahern@gmail.com> Signed-off-by:
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Soheil Hassas Yeganeh authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit bafbb9c7 ] tcp_ack() can call tcp_fragment() which may dededuct the value tp->fackets_out when MSS changes. When prior_fackets is larger than tp->fackets_out, tcp_clean_rtx_queue() can invoke tcp_update_reordering() with negative values. This results in absurd tp->reodering values higher than sysctl_tcp_max_reordering. Note that tcp_update_reordering indeeds sets tp->reordering to min(sysctl_tcp_max_reordering, metric), but because the comparison is signed, a negative metric always wins. Fixes: c7caf8d3 ("[TCP]: Fix reord detection due to snd_una covered holes") Reported-by:
Rebecca Isaacs <risaacs@google.com> Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by:
Neal Cardwell <ncardwell@google.com> Signed-off-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
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Xin Long authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit dbc2b5e9 ] Commit 0ca50d12 ("sctp: fix src address selection if using secondary addresses") has fixed a src address selection issue when using secondary addresses for ipv4. Now sctp ipv6 also has the similar issue. When using a secondary address, sctp_v6_get_dst tries to choose the saddr which has the most same bits with the daddr by sctp_v6_addr_match_len. It may make some cases not work as expected. hostA: [1] fd21:356b:459a:cf10::11 (eth1) [2] fd21:356b:459a:cf20::11 (eth2) hostB: [a] fd21:356b:459a:cf30::2 (eth1) [b] fd21:356b:459a:cf40::2 (eth2) route from hostA to hostB: fd21:356b:459a:cf30::/64 dev eth1 metric 1024 mtu 1500 The expected path should be: fd21:356b:459a:cf10::11 <-> fd21:356b:459a:cf30::2 But addr[2] matches addr[a] more bits than addr[1] does, according to sctp_v6_addr_match_len. It causes the path to be: fd21:356b:459a:cf20::11 <-> fd21:356b:459a:cf30::2 This patch is to fix it with the same way as Marcelo's fix for sctp ipv4. As no ip_dev_find for ipv6, this patch is to use ipv6_chk_addr to check if the saddr is in a dev instead. Note that for backwards compatibility, it will still do the addr_match_len check here when no optimal is found. Reported-by:
Patrick Talbert <ptalbert@redhat.com> Signed-off-by:
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Yuchung Cheng authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit b451e5d2 ] This patch fixes a bug in splitting an SKB during SACK processing. Specifically if an skb contains multiple packets and is only partially sacked in the higher sequences, tcp_match_sack_to_skb() splits the skb and marks the second fragment as SACKed. The current code further attempts rounding up the first fragment to MSS boundaries. But it misses a boundary condition when the rounded-up fragment size (pkt_len) is exactly skb size. Spliting such an skb is pointless and causses a kernel warning and aborts the SACK processing. This patch universally checks such over-split before calling tcp_fragment to prevent these unnecessary warnings. Fixes: adb92db8 ("tcp: Make SACK code to split only at mss boundaries") Signed-off-by:
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Julian Wiedmann authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 25e2c341 ] Access card->dev only after checking whether's its valid. Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Reviewed-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
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Julian Wiedmann authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 2d2ebb3e ] commit b4d72c08 ("qeth: bridgeport support - basic control") broke the support for OSM and OSN devices as follows: As OSM and OSN are L2 only, qeth_core_probe_device() does an early setup by loading the l2 discipline and calling qeth_l2_probe_device(). In this context, adding the l2-specific bridgeport sysfs attributes via qeth_l2_create_device_attributes() hits a BUG_ON in fs/sysfs/group.c, since the basic sysfs infrastructure for the device hasn't been established yet. Note that OSN actually has its own unique sysfs attributes (qeth_osn_devtype), so the additional attributes shouldn't be created at all. For OSM, add a new qeth_l2_devtype that contains all the common and l2-specific sysfs attributes. When qeth_core_probe_device() does early setup for OSM or OSN, assign the corresponding devtype so that the ccwgroup probe code creates the full set of sysfs attributes. This allows us to skip qeth_l2_create_device_attributes() in case of an early setup. Any device that can't do early setup will initially have only the generic sysfs attributes, and when it's probed later qeth_l2_probe_device() adds the l2-specific attributes. If an early-setup device is removed (by calling ccwgroup_ungroup()), device_unregister() will - using the devtype - delete the l2-specific attributes before qeth_l2_remove_device() is called. So make sure to not remove them twice. What complicates the issue is that qeth_l2_probe_device() and qeth_l2_remove_device() is also called on a device when its layer2 attribute changes (ie. its layer mode is switched). For early-setup devices this wouldn't work properly - we wouldn't remove the l2-specific attributes when switching to L3. But switching the layer mode doesn't actually make any sense; we already decided that the device can only operate in L2! So just refuse to switch the layer mode on such devices. Note that OSN doesn't have a layer2 attribute, so we only need to special-case OSM. Based on an initial patch by Ursula Braun. Fixes: b4d72c08 ("qeth: bridgeport support - basic control") Signed-off-by:
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Ursula Braun authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit 9111e788 ] When setting up the device from within the layer discipline's probe routine, creating the layer-specific sysfs attributes can fail. Report this error back to the caller, and handle it by releasing the layer discipline. Signed-off-by:
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Orlando Arias authored
BugLink: http://bugs.launchpad.net/bugs/1697001 [ Upstream commit deba804c ] Greetings, GCC 7 introduced the -Wstringop-overflow flag to detect buffer overflows in calls to string handling functions [1][2]. Due to the way ``empty_zero_page'' is declared in arch/sparc/include/setup.h, this causes a warning to trigger at compile time in the function mem_init(), which is subsequently converted to an error. The ensuing patch fixes this issue and aligns the declaration of empty_zero_page to that of other architectures. Thank you. Cheers, Orlando. [1] https://gcc.gnu.org/ml/gcc-patches/2016-10/msg02308.html [2] https://gcc.gnu.org/gcc-7/changes.htmlSigned-off-by:
Orlando Arias <oarias@knights.ucf.edu> -------------------------------------------------------------------------------- Signed-off-by:
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Vladis Dronov authored
CVE-2017-7346 The 'req->mip_levels' parameter in vmw_gb_surface_define_ioctl() is a user-controlled 'uint32_t' value which is used as a loop count limit. This can lead to a kernel lockup and DoS. Add check for 'req->mip_levels'. References: https://bugzilla.redhat.com/show_bug.cgi?id=1437431 Cc: <stable@vger.kernel.org> Signed-off-by:
Vladis Dronov <vdronov@redhat.com> Reviewed-by:
Sinclair Yeh <syeh@vmware.com> (cherry picked from commit ee9c4e68) Signed-off-by:
Po-Hsu Lin <po-hsu.lin@canonical.com> Acked-by:
Seth Forshee <seth.forshee@canonical.com> Signed-off-by:
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Alex Hung authored
New firmwares include a feature called 5 button array that supports super key, volume up/down, rotation lock and power button. Support for this feature is required to fix power button on some recent systems. This patch was tested on a Dell Latitude 7480. Signed-off-by:
Alex Hung <alex.hung@canonical.com> Reviewed-by:
Michał Kępień <kernel@kempniu.pl> Signed-off-by:
Darren Hart <dvhart@linux.intel.com> BugLink: http://bugs.launchpad.net/bugs/1697116 (cherry picked from commit bd5762a0) Signed-off-by:
Colin King <colin.king@canonical.com> Signed-off-by:
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Alex Hung authored
The second call to acpi_remove_notify_handler does not result in panic or generate error messages, but it is unnecessary and the function returns with an error. Remove the duplicate call. Correct two improperly indented lines. Signed-off-by:
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David S. Miller authored
Do not use unsigned variables to see if it returns a negative error or not. Fixes: 2423496a ("ipv6: Prevent overrun when parsing v6 header options") Reported-by:
Julia Lawall <julia.lawall@lip6.fr> Signed-off-by:
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Avijit Kanti Das authored
CVE-2014-9900 memset() the structure ethtool_wolinfo that has padded bytes but the padded bytes have not been zeroed out. Change-Id: If3fd2d872a1b1ab9521d937b86a29fc468a8bbfe Signed-off-by:
Avijit Kanti Das <avijitnsec@codeaurora.org> (cherry-picked from commit 63c317dbee97983004dffdd9f742a20d17150071 https://source.codeaurora.org/quic/la/kernel/msm-3.10) Signed-off-by:
Brad Figg <brad.figg@canonical.com> Acked-by:
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Thadeu Lima de Souza Cascardo authored
Ignore: yes Signed-off-by:
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- 26 Jun, 2017 5 commits
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Thadeu Lima de Souza Cascardo authored
Signed-off-by: -
Helge Deller authored
Fix expand_upwards() on architectures with an upward-growing stack (parisc, metag and partly IA-64) to allow the stack to reliably grow exactly up to the address space limit given by TASK_SIZE. Signed-off-by:
Helge Deller <deller@gmx.de> Acked-by:
Hugh Dickins <hughd@google.com> Signed-off-by:
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Hugh Dickins authored
commit f4cb767d upstream. Trinity gets kernel BUG at mm/mmap.c:1963! in about 3 minutes of mmap testing. That's the VM_BUG_ON(gap_end < gap_start) at the end of unmapped_area_topdown(). Linus points out how MAP_FIXED (which does not have to respect our stack guard gap intentions) could result in gap_end below gap_start there. Fix that, and the similar case in its alternative, unmapped_area(). Fixes: 1be7107f ("mm: larger stack guard gap, between vmas") Reported-by:
Dave Jones <davej@codemonkey.org.uk> Debugged-by:
Michal Hocko <mhocko@suse.com> Signed-off-by:
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Hugh Dickins authored
commit 1be7107f upstream. Stack guard page is a useful feature to reduce a risk of stack smashing into a different mapping. We have been using a single page gap which is sufficient to prevent having stack adjacent to a different mapping. But this seems to be insufficient in the light of the stack usage in userspace. E.g. glibc uses as large as 64kB alloca() in many commonly used functions. Others use constructs liks gid_t buffer[NGROUPS_MAX] which is 256kB or stack strings with MAX_ARG_STRLEN. This will become especially dangerous for suid binaries and the default no limit for the stack size limit because those applications can be tricked to consume a large portion of the stack and a single glibc call could jump over the guard page. These attacks are not theoretical, unfortunatelly. Make those attacks less probable by increasing the stack guard gap to 1MB (on systems with 4k pages; but make it depend on the page size because systems with larger base pages might cap stack allocations in the PAGE_SIZE units) which should cover larger alloca() and VLA stack allocations. It is obviously not a full fix because the problem is somehow inherent, but it should reduce attack space a lot. One could argue that the gap size should be configurable from userspace, but that can be done later when somebody finds that the new 1MB is wrong for some special case applications. For now, add a kernel command line option (stack_guard_gap) to specify the stack gap size (in page units). Implementation wise, first delete all the old code for stack guard page: because although we could get away with accounting one extra page in a stack vma, accounting a larger gap can break userspace - case in point, a program run with "ulimit -S -v 20000" failed when the 1MB gap was counted for RLIMIT_AS; similar problems could come with RLIMIT_MLOCK and strict non-overcommit mode. Instead of keeping gap inside the stack vma, maintain the stack guard gap as a gap between vmas: using vm_start_gap() in place of vm_start (or vm_end_gap() in place of vm_end if VM_GROWSUP) in just those few places which need to respect the gap - mainly arch_get_unmapped_area(), and and the vma tree's subtree_gap support for that. Original-patch-by:
Oleg Nesterov <oleg@redhat.com> Original-patch-by:
Willy Tarreau <w@1wt.eu> [gkh: minor build fixes for 4.4] Signed-off-by:
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Andrea Arcangeli authored
mm->highest_vm_end doesn't need any update. After finally removing the oddness from vma_merge case 8 that was causing: 1) constant risk of trouble whenever anybody would check vma fields from rmap_walks, like it happened when page migration was introduced and it read the vma->vm_page_prot from a rmap_walk 2) the callers of vma_merge to re-initialize any value different from the current vma, instead of vma_merge() more reliably returning a vma that already matches all fields passed as parameter .. it is also worth to take the opportunity of cleaning up superfluous code in vma_adjust(), that if not removed adds up to the hard readability of the function. Link: http://lkml.kernel.org/r/1474492522-2261-5-git-send-email-aarcange@redhat.comSigned-off-by:
Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Jan Vorlicek <janvorli@microsoft.com> Signed-off-by:
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- 23 Jun, 2017 1 commit
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Stefan Bader authored
This reverts commit b9f2a4fb to be replaced by the upstream patch set. CVE-2017-1000364 Signed-off-by:
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