lucien [Sat, 5 Dec 2015 07:35:36 +0000 (15:35 +0800)]
sctp: start t5 timer only when peer rwnd is 0 and local state is SHUTDOWN_PENDING
when A sends a data to B, then A close() and enter into SHUTDOWN_PENDING
state, if B neither claim his rwnd is 0 nor send SACK for this data, A
will keep retransmitting this data until t5 timeout, Max.Retrans times
can't work anymore, which is bad.
if B's rwnd is not 0, it should send abort after Max.Retrans times, only
when B's rwnd == 0 and A's retransmitting beyonds Max.Retrans times, A
will start t5 timer, which is also commit f8d960524328 ("sctp: Enforce
retransmission limit during shutdown") means, but it lacks the condition
peer rwnd == 0.
so fix it by adding a bit (zero_window_announced) in peer to record if
the last rwnd is 0. If it was, zero_window_announced will be set. and use
this bit to decide if start t5 timer when local.state is SHUTDOWN_PENDING.
Fixes: commit f8d960524328 ("sctp: Enforce retransmission limit during shutdown") Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
lucien [Sat, 5 Dec 2015 07:19:27 +0000 (15:19 +0800)]
sctp: only drop the reference on the datamsg after sending a msg
If the chunks are enqueued successfully but sctp_cmd_interpreter()
return err to sctp_sendmsg() (mainly because of no mem), the chunks will
get re-queued, but we are dropping the reference and freeing them.
The fix is to just drop the reference on the datamsg just as it had
succeeded, as:
- if the chunks weren't queued, this is enough to get them freed.
- if they were queued, they will get freed when they finally get out or
discarded.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
lucien [Sat, 5 Dec 2015 07:15:17 +0000 (15:15 +0800)]
sctp: hold the chunks only after the chunk is enqueued in outq
When a msg is sent, sctp will hold the chunks of this msg and then try
to enqueue them. But if the chunks are not enqueued in sctp_outq_tail()
because of the invalid state, sctp_cmd_interpreter() may still return
success to sctp_sendmsg() after calling sctp_outq_flush(), these chunks
will become orphans and will leak.
So we fix them by moving sctp_chunk_hold() to sctp_outq_tail(), where we
are sure that the chunk is going to get queued.
Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Stefan Wahren [Fri, 4 Dec 2015 15:29:10 +0000 (16:29 +0100)]
net: qca_spi: fix transmit queue timeout handling
In case of a tx queue timeout every transmit is blocked until the
QCA7000 resets himself and triggers a sync which makes the driver
flushs the tx ring. So avoid this blocking situation by triggering
the sync immediately after the timeout. Waking the queue doesn't
make sense in this situation.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Fixes: 291ab06ecf67 ("net: qualcomm: new Ethernet over SPI driver for QCA7000") Signed-off-by: David S. Miller <davem@davemloft.net>
Bjørn Mork [Sat, 5 Dec 2015 12:01:50 +0000 (13:01 +0100)]
net: cdc_mbim: add "NDP to end" quirk for Huawei E3372
The Huawei E3372 (12d1:157d) needs this quirk in MBIM mode
as well. Allow this by forcing the NTB to contain only a
single NDP, and add a device specific entry for this ID.
Due to the way Huawei use device IDs, this might be applied
to other modems as well. It is assumed that those modems
will be based on the same firmware and will need this quirk
too. If not, it will still not harm normal usage, although
multiplexing performance could be impacted.
Cc: Enrico Mioso <mrkiko.rs@gmail.com> Reported-by: Sami Farin <hvtaifwkbgefbaei@gmail.com> Signed-off-by: Bjørn Mork <bjorn@mork.no> Acked-By: Enrico Mioso <mrkiko.rs@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
vmalloc cannot be used in BH disabled contexts, even
with GFP_ATOMIC. And we certainly want to support
rhashtable users inserting entries with software
interrupts disabled.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 6 Dec 2015 03:23:23 +0000 (22:23 -0500)]
Merge branch 'sctp-timestamp-fixes'
Marcelo Ricardo Leitner says:
====================
sctp: packet timestamp fixes
These a couple of fixes regarding sctp/packet timestamps.
Dmitry Vyukov <dvyukov@google.com> reported the counter leak on missing
net_enable_timestamp() (2nd patch) and further testing here revealed the
other two issues.
Please consider these to -stable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: also copy sk_tsflags when copying the socket
As we are keeping timestamps on when copying the socket, we also have to
copy sk_tsflags.
This is needed since b9f40e21ef42 ("net-timestamp: move timestamp flags
out of sk_flags").
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: update the netstamp_needed counter when copying sockets
Dmitry Vyukov reported that SCTP was triggering a WARN on socket destroy
related to disabling sock timestamp.
When SCTP accepts an association or peel one off, it copies sock flags
but forgot to call net_enable_timestamp() if a packet timestamping flag
was copied, leading to extra calls to net_disable_timestamp() whenever
such clones were closed.
The fix is to call net_enable_timestamp() whenever we copy a sock with
that flag on, like tcp does.
Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: use the same clock as if sock source timestamps were on
SCTP echoes a cookie o INIT ACK chunks that contains a timestamp, for
detecting stale cookies. This cookie is echoed back to the server by the
client and then that timestamp is checked.
Thing is, if the listening socket is using packet timestamping, the
cookie is encoded with ktime_get() value and checked against
ktime_get_real(), as done by __net_timestamp().
The fix is to sctp also use ktime_get_real(), so we can compare bananas
with bananas later no matter if packet timestamping was enabled or not.
Fixes: 52db882f3fc2 ("net: sctp: migrate cookie life from timeval to ktime") Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Fri, 4 Dec 2015 12:54:03 +0000 (13:54 +0100)]
vxlan: fix incorrect RCO bit in VXLAN header
Commit 3511494ce2f3d ("vxlan: Group Policy extension") changed definition of
VXLAN_HF_RCO from 0x00200000 to BIT(24). This is obviously incorrect. It's
also in violation with the RFC draft.
Fixes: 3511494ce2f3d ("vxlan: Group Policy extension") Cc: Thomas Graf <tgraf@suug.ch> Cc: Tom Herbert <therbert@google.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Acked-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Bjørn Mork [Fri, 4 Dec 2015 13:15:08 +0000 (14:15 +0100)]
ipv6: keep existing flags when setting IFA_F_OPTIMISTIC
Commit 64236f3f3d74 ("ipv6: introduce IFA_F_STABLE_PRIVACY flag")
failed to update the setting of the IFA_F_OPTIMISTIC flag, causing
the IFA_F_STABLE_PRIVACY flag to be lost if IFA_F_OPTIMISTIC is set.
Cc: Erik Kline <ek@google.com> Cc: Fernando Gont <fgont@si6networks.com> Cc: Lorenzo Colitti <lorenzo@google.com> Cc: YOSHIFUJI Hideaki/吉藤英明 <hideaki.yoshifuji@miraclelinux.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Fixes: 64236f3f3d74 ("ipv6: introduce IFA_F_STABLE_PRIVACY flag") Signed-off-by: Bjørn Mork <bjorn@mork.no> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
There is a memleak when suspend/resume this driver version.
Currently the stmmac, during resume step, reallocates all the resources
but they are not released when suspend.
The patch is not to release these resources but the logic has been changed.
In fact, it is not necessary to free and reallocate all from scratch
because the memory data will be always preserved.
As final solution, the patch just reinit the descriptors and the rx/tx
pointers only when resume. Tested done on STi boxes.
Reported-by: ZhengShunQian <zhengsq@rock-chips.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This is because netdev_alloc_skb() fails and 'mdp->rx_skbuff[entry]' is left
NULL but sh_eth_rx() later uses it without checking. Add such check...
Reported-by: Yasushi SHOJI <yashi@atmark-techno.com> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 5 Dec 2015 22:39:31 +0000 (17:39 -0500)]
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2015-12-03
This series contains updates to ixgbe, i40e/i40evf, MAINTAINERS and e100.txt
Alex provides a fix for ixgbe where enabling SR-IOV and then bringing the
interface up was resulting in the PF MAC addresses getting into a bad state.
The workaround for this issue is to bring up the interface first and then
enable SR-IOV as this will trigger the reset in the existing code.
I clean up legacy license stuff in the e100.txt documentation and then
update the maintainers/reviewers list for our drivers.
Jesse fixes an issue with the i40e/i40evf drivers, where if the driver were
to happen to have a mutex held while the i40e_init_adminq() call was called,
the init_adminq might inadvertently call mutex_init on a lock that was held
which is a violation of the calling semantices.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Machek [Fri, 4 Dec 2015 08:50:00 +0000 (09:50 +0100)]
atl1c: Improve driver not to do order 4 GFP_ATOMIC allocation
atl1c driver is doing order-4 allocation with GFP_ATOMIC
priority. That often breaks networking after resume. Switch to
GFP_KERNEL. Still not ideal, but should be significantly better.
atl1c_setup_ring_resources() is called from .open() function, and
already uses GFP_KERNEL, so this change is safe.
Signed-off-by: Pavel Machek <pavel@ucw.cz> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Fri, 4 Dec 2015 14:39:56 +0000 (22:39 +0800)]
rhashtable: Use __vmalloc with GFP_ATOMIC for table allocation
When an rhashtable user pounds rhashtable hard with back-to-back
insertions we may end up growing the table in GFP_ATOMIC context.
Unfortunately when the table reaches a certain size this often
fails because we don't have enough physically contiguous pages
to hold the new table.
Eric Dumazet suggested (and in fact wrote this patch) using
__vmalloc instead which can be used in GFP_ATOMIC context.
Reported-by: Phil Sutter <phil@nwl.cc> Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Thu, 3 Dec 2015 16:21:50 +0000 (17:21 +0100)]
gre6: allow to update all parameters via rtnl
Parameters were updated only if the kernel was unable to find the tunnel
with the new parameters, ie only if core pamareters were updated (keys,
addr, link, type).
Now it's possible to update ttl, hoplimit, flowinfo and flags.
Fixes: c12b395a4664 ("gre: Support GRE over IPv6") Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Reported-by: Andrew <nitr0@seti.kr.ua> Fixes: 287f3a943fef ("pppoe: Use workqueue to die properly when a PADT is received") Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 4 Dec 2015 20:01:13 +0000 (15:01 -0500)]
Merge branch 'mvpp2-fixes'
Marcin Wojtas says:
====================
Marvell Armada 375 mvpp2 fixes
During my work on mvneta driver I revised mvpp2, and it occurred that the
initial version of Marvell Armada 375 SoC comprised bugs around
DMA-unmapping in both ingress and egress paths - not all buffers were
umapped in TX path and none(!) in RX. Three patches that I send fix
this situation.
Any feedback would be welcome.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Thu, 3 Dec 2015 14:20:51 +0000 (15:20 +0100)]
net: mvpp2: fix refilling BM pools in RX path
In hitherto code in case of RX buffer allocation error during refill,
original buffer is pushed to the network stack, but the amount of
available buffer pointers in BM pool is decreased.
This commit fixes the situation by moving refill call before skb_put(),
and returning original buffer pointer to the pool in case of an error.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375
network unit")
Cc: <stable@vger.kernel.org> # v3.18+ Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Thu, 3 Dec 2015 14:20:50 +0000 (15:20 +0100)]
net: mvpp2: fix buffers' DMA handling on RX path
Each allocated buffer, whose pointer is put into BM pool is DMA-mapped.
Hence it should be properly unmapped after usage or when removing buffers
from pool.
This commit fixes DMA handling on RX path by adding dma_unmap_single() in
mvpp2_rx() and in mvpp2_bufs_free(). The latter function's argument number
had to be increased for this purpose.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375
network unit")
Cc: <stable@vger.kernel.org> # v3.18+ Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Thu, 3 Dec 2015 14:20:49 +0000 (15:20 +0100)]
net: mvpp2: fix missing DMA region unmap in egress processing
The Tx descriptor release code currently calls dma_unmap_single() and
dev_kfree_skb_any() if the descriptor is associated with a non-NULL skb.
This condition is true only for the last fragment of the packet.
Since every descriptor's buffer is DMA-mapped it has to be properly
unmapped.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375
network unit")
Cc: <stable@vger.kernel.org> # v3.18+ Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Thu, 3 Dec 2015 12:41:29 +0000 (20:41 +0800)]
rhashtable: Prevent spurious EBUSY errors on insertion
Thomas and Phil observed that under stress rhashtable insertion
sometimes failed with EBUSY, even though this error should only
ever been seen when we're under attack and our hash chain length
has grown to an unacceptable level, even after a rehash.
It turns out that the logic for detecting whether there is an
existing rehash is faulty. In particular, when two threads both
try to grow the same table at the same time, one of them may see
the newly grown table and thus erroneously conclude that it had
been rehashed. This is what leads to the EBUSY error.
This patch fixes this by remembering the current last table we
used during insertion so that rhashtable_insert_rehash can detect
when another thread has also done a resize/rehash. When this is
detected we will give up our resize/rehash and simply retry the
insertion with the new table.
Reported-by: Thomas Graf <tgraf@suug.ch> Reported-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Phil Sutter <phil@nwl.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 3 Dec 2015 23:45:16 +0000 (15:45 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A collection of fixes from this series. The most important here is a
regression fix for an issue that some folks would hit in blk-merge.c,
and the NVMe queue depth limit for the screwed up Apple "nvme"
controller.
In more detail, this pull request contains:
- a set of fixes for null_blk, including a fix for a few corner cases
where we could hang the device. From Arianna and Paolo.
- lightnvm:
- A build improvement from Keith.
- Update the qemu pci id detection from Matias.
- Error handling fixes for leaks and other little fixes from
Sudip and Wenwei.
- fix from Eric where BLKRRPART would not return EBUSY for whole
device mounts, only when partitions were mounted.
- fix from Jan Kara, where EOF O_DIRECT reads would return
negatively.
- remove check for rq_mergeable() when checking limits for cloned
requests. The check doesn't make any sense. It's assuming that
since NOMERGE is set on the request that we don't have to
recalculate limits since the request didn't change, but that's not
true if the request has been redirected. From Hannes.
- correctly get the bio front segment value set for single segment
bio's, fixing a BUG() in blk-merge. From Ming"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvme: temporary fix for Apple controller reset
null_blk: change type of completion_nsec to unsigned long
null_blk: guarantee device restart in all irq modes
null_blk: set a separate timer for each command
blk-merge: fix computing bio->bi_seg_front_size in case of single segment
direct-io: Fix negative return from dio read beyond eof
block: Always check queue limits for cloned requests
lightnvm: missing nvm_lock acquire
lightnvm: unconverted ppa returned in get_bb_tbl
lightnvm: refactor and change vendor id for qemu
lightnvm: do device max sectors boundary check first
lightnvm: fix ioctl memory leaks
lightnvm: free memory when gennvm register fails
lightnvm: Simplify config when disabled
Return EBUSY from BLKRRPART for mounted whole-dev fs
Linus Torvalds [Thu, 3 Dec 2015 23:23:17 +0000 (15:23 -0800)]
Merge tag 'trace-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"During the merge window I added a new file that is used to filter
trace events on pids. It filters all events where only tasks with
their pid in that file exists. It also handles the sched_switch and
sched_wakeup trace events where the current task does not have its pid
in the file, but the task either being switched to or awaken does.
Unfortunately, I forgot about sched_wakeup_new and sched_waking. Both
of these tracepoints use the same class as the sched_wakeup
tracepoint, and they too should be included in what gets filtered by
the set_event_pid file"
* tag 'trace-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Add sched_wakeup_new and sched_waking tracepoints for pid filter
Jesse Brandeburg [Wed, 18 Nov 2015 23:47:06 +0000 (15:47 -0800)]
i40e/i40evf: avoid mutex re-init
If the driver were to happen to have a mutex held while
the i40e_init_adminq call was called, the init_adminq might
inadvertently call mutex_init on a lock that was held
which is a violation of the calling semantics.
Fix this by avoiding adminq.c code allocating/freeing this memory, and
then do the same work only once in probe/remove.
Testing Hints (Required if no HSD): for VF, load i40evf in bare metal
and echo 32 > sriov_numvfs; echo 0 > sriov_numvfs in a loop. Yes this
is a horrible thing to do.
Change-ID: Ida263c51b34e195252179e7e5e400d73a99be7a2 Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jeff Kirsher [Tue, 10 Nov 2015 19:09:06 +0000 (11:09 -0800)]
MAINTAINERS: Update Intel Wired LAN reviewers
Since Matthew has moved on to other pastures and no longer works
for Intel, remove him from the list of reviewers and add Bruce
Allan as his replacement.
CC: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jeff Kirsher [Mon, 9 Nov 2015 13:03:47 +0000 (05:03 -0800)]
e100.txt: Cleanup license info in kernel doc
Apparently the e100.txt document contained a "License" section left
over from days of old, which does not need to be in the kernel
documentation. So clean it up..
CC: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com>
David S. Miller [Thu, 3 Dec 2015 20:56:22 +0000 (15:56 -0500)]
Merge tag 'mac80211-for-davem-2015-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A small set of fixes for 4.4:
* fix scanning in mac80211 to not actively scan radar
channels (from Antonio)
* fix uninitialized variable in remain-on-channel that
could lead to treating frame TX as remain-on-channel
and not sending the frame at all
* remove NL80211_FEATURE_FULL_AP_CLIENT_STATE again, it
was broken and needs more work, we'll enable it later
* fix call_rcu() induced use-after-reset/free in mesh
(that was suddenly causing issues in certain tests)
* always request block-ack window size 64 as we found
some APs will otherwise crash (really ...)
* fix P2P-Device teardown sequence to avoid restarting
with uninitialized data
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Tue, 20 Oct 2015 20:28:17 +0000 (13:28 -0700)]
ixgbe: Reset interface after enabling SR-IOV
Enabling SR-IOV and then bringing the interface up was resulting in the PF
MAC addresses getting into a bad state. Specifically the MAC address was
enabled for both VF 0 and the PF. This resulted in some odd behaviors such
as VF 0 receiving a copy of the PFs traffic, which in turn enables the
ability for VF 0 to spoof the PF.
A workaround for this issue appears to be to bring up the interface first
and then enable SR-IOV as this way the reset is then triggered in the
existing code.
In order to correct this I have added a change to ixgbe_setup_tc where if
the interface is down we still will at least call ixgbe_reset so that the
MAC addresses for the device are reset to the correct pools.
Expected Result, behavior after patch:
MPSAR[0] 00000080
MPSAR[254] 00000080
Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Tested-by: Darin Miller <darin.j.miller@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jérôme Pouiller [Thu, 3 Dec 2015 09:02:35 +0000 (10:02 +0100)]
net: phy: reset only targeted phy
It is possible to address another chip on same MDIO bus. The case is
correctly handled for media advertising. It is taken into account
only if mii_data->phy_id == phydev->addr. However, this condition
was missing for reset case.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Wed, 2 Dec 2015 06:54:08 +0000 (01:54 -0500)]
bnxt_en: Setup uc_list mac filters after resetting the chip.
Call bnxt_cfg_rx_mode() in bnxt_init_chip() to setup uc_list and
mc_list mac address filters. Before the patch, uc_list is not
setup again after chip reset (such as ethtool ring size change)
and macvlans don't work any more after that.
Modify bnxt_cfg_rx_mode() to return error codes appropriately so
that the init chip sequence can detect any failures.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jeffrey Huang [Wed, 2 Dec 2015 06:54:07 +0000 (01:54 -0500)]
bnxt_en: enforce proper storing of MAC address
For PF, the bp->pf.mac_addr always holds the permanent MAC
addr assigned by the HW. For VF, the bp->vf.mac_addr always
holds the administrator assigned VF MAC addr. The random
generated VF MAC addr should never get stored to bp->vf.mac_addr.
This way, when the VF wants to change the MAC address, we can tell
if the adminstrator has already set it and disallow the VF from
changing it.
v2: Fix compile error if CONFIG_BNXT_SRIOV is not set.
Signed-off-by: Jeffrey Huang <huangjw@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jeffrey Huang [Wed, 2 Dec 2015 06:54:06 +0000 (01:54 -0500)]
bnxt_en: Fixed incorrect implementation of ndo_set_mac_address
The existing ndo_set_mac_address only copies the new MAC addr
and didn't set the new MAC addr to the HW. The correct way is
to delete the existing default MAC filter from HW and add
the new one. Because of RFS filters are also dependent on the
default mac filter l2 context, the driver must go thru
close_nic() to delete the default MAC and RFS filters, then
open_nic() to set the default MAC address to HW.
Signed-off-by: Jeffrey Huang <huangjw@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: lpc_eth: remove irq > NR_IRQS check from probe()
If the driver is used on an ARM platform with SPARSE_IRQ defined,
semantics of NR_IRQS is different (minimal value of virtual irqs) and
by default it is set to 16, see arch/arm/include/asm/irq.h.
This value may be less than the actual number of virtual irqs, which
may break the driver initialization. The check removal allows to use
the driver on such a platform, and, if irq controller driver works
correctly, the check is not needed on legacy platforms.
Fixes a runtime problem:
lpc-eth 31060000.ethernet: error getting resources.
lpc_eth: lpc-eth: not found (-6).
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mq/mqprio have their own ways to report qlen/drops by folding stats on
all their queues, with appropriate locking.
A second problem is that qdisc_tree_decrease_qlen() calls qdisc_lookup()
without proper locking : concurrent qdisc updates could corrupt the list
that qdisc_match_from_root() parses to find a qdisc given its handle.
Fix first problem adding a TCQ_F_NOPARENT qdisc flag that
qdisc_tree_decrease_qlen() can use to abort its tree traversal,
as soon as it meets a mq/mqprio qdisc children.
Second problem can be fixed by RCU protection.
Qdisc are already freed after RCU grace period, so qdisc_list_add() and
qdisc_list_del() simply have to use appropriate rcu list variants.
A future patch will add a per struct netdev_queue list anchor, so that
qdisc_tree_decrease_qlen() can have more efficient lookups.
Reported-by: Daniele Fucini <dfucini@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Cong Wang <cwang@twopensource.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Tue, 1 Dec 2015 17:33:36 +0000 (18:33 +0100)]
openvswitch: fix hangup on vxlan/gre/geneve device deletion
Each openvswitch tunnel vport (vxlan,gre,geneve) holds a reference
to the underlying tunnel device, but never released it when such
device is deleted.
Deleting the underlying device via the ip tool cause the kernel to
hangup in the netdev_wait_allrefs() loop.
This commit ensure that on device unregistration dp_detach_port_notify()
is called for all vports that hold the device reference, properly
releasing it.
Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device") Fixes: b2acd1dc3949 ("openvswitch: Use regular GRE net_device instead of vport") Fixes: 6b001e682e90 ("openvswitch: Use Geneve device.") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Flavio Leitner <fbl@sysclose.org> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Tue, 1 Dec 2015 15:31:08 +0000 (16:31 +0100)]
ipv4: igmp: Allow removing groups from a removed interface
When a multicast group is joined on a socket, a struct ip_mc_socklist
is appended to the sockets mc_list containing information about the
joined group.
If the interface is hot unplugged, this entry becomes stale. Prior to
commit 52ad353a5344f ("igmp: fix the problem when mc leave group") it
was possible to remove the stale entry by performing a
IP_DROP_MEMBERSHIP, passing either the old ifindex or ip address on
the interface. However, this fix enforces that the interface must
still exist. Thus with time, the number of stale entries grows, until
sysctl_igmp_max_memberships is reached and then it is not possible to
join and more groups.
The previous patch fixes an issue where a IP_DROP_MEMBERSHIP is
performed without specifying the interface, either by ifindex or ip
address. However here we do supply one of these. So loosen the
restriction on device existence to only apply when the interface has
not been specified. This then restores the ability to clean up the
stale entries.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Fixes: 52ad353a5344f "(igmp: fix the problem when mc leave group") Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 1 Dec 2015 15:20:07 +0000 (07:20 -0800)]
ipv6: sctp: implement sctp_v6_destroy_sock()
Dmitry Vyukov reported a memory leak using IPV6 SCTP sockets.
We need to call inet6_destroy_sock() to properly release
inet6 specific fields.
Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Shi [Mon, 30 Nov 2015 22:24:07 +0000 (14:24 -0800)]
arm64: bpf: add 'store immediate' instruction
aarch64 doesn't have native store immediate instruction, such operation
has to be implemented by the below instruction sequence:
Load immediate to register
Store register
Signed-off-by: Yang Shi <yang.shi@linaro.org> CC: Zi Shen Lim <zlim.lnx@gmail.com> CC: Xi Wang <xi.wang@gmail.com> Reviewed-by: Zi Shen Lim <zlim.lnx@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 3 Dec 2015 05:53:57 +0000 (21:53 -0800)]
ipv6: kill sk_dst_lock
While testing the np->opt RCU conversion, I found that UDP/IPv6 was
using a mixture of xchg() and sk_dst_lock to protect concurrent changes
to sk->sk_dst_cache, leading to possible corruptions and crashes.
ip6_sk_dst_lookup_flow() uses sk_dst_check() anyway, so the simplest
way to fix the mess is to remove sk_dst_lock completely, as we did for
IPv4.
__ip6_dst_store() and ip6_dst_store() share same implementation.
sk_setup_caps() being called with socket lock being held or not,
we have to use sk_dst_set() instead of __sk_dst_set()
Note that I had to move the "np->dst_cookie = rt6_get_cookie(rt);"
in ip6_dst_store() before the sk_setup_caps(sk, dst) call.
This is because ip6_dst_store() can be called from process context,
without any lock held.
As soon as the dst is installed in sk->sk_dst_cache, dst can be freed
from another cpu doing a concurrent ip6_dst_store()
Doing the dst dereference before doing the install is needed to make
sure no use after free would trigger.
Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net/neighbour: fix crash at dumping device-agnostic proxy entries
Proxy entries could have null pointer to net-device.
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com> Fixes: 84920c1420e2 ("net: Allow ipv6 proxies and arp proxies be shown with iproute2") Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Vyukov reported that the user could trigger a kernel warning by
using a large len value for getsockopt SCTP_GET_LOCAL_ADDRS, as that
value directly affects the value used as a kmalloc() parameter.
This patch thus switches the allocation flags from all user-controllable
kmalloc size to GFP_USER to put some more restrictions on it and also
disables the warn, as they are not necessary.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
sctp: convert sack_needed and sack_generation to bits
They don't need to be any bigger than that and with this we start a new
bitfield for tracking association runtime stuff, like zero window
situation.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 30 Nov 2015 03:37:57 +0000 (19:37 -0800)]
ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
To avoid never succeeding kmalloc with order >= MAX_ORDER check that
elem->value_size and computed elem_size are within limits for both hash and
array type maps.
Also add __GFP_NOWARN to kmalloc(value_size | elem_size) to avoid OOM warnings.
Note kmalloc(key_size) is highly unlikely to trigger OOM, since key_size <= 512,
so keep those kmalloc-s as-is.
Large value_size can cause integer overflows in elem_size and map.pages
formulas, so check for that as well.
Fixes: aaac3ba95e4c ("bpf: charge user for creation of BPF maps and programs") Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 3 Dec 2015 04:35:22 +0000 (23:35 -0500)]
Merge branch 'mvneta-fixes'
Marcin Wojtas says:
====================
Marvell Armada XP/370/38X Neta fixes
I'm sending v4 with corrected commit log of the last patch, in order to
avoid possible conflicts between the branches as suggested by Gregory
Clement.
Best regards,
Marcin Wojtas
Changes from v4:
* Correct commit log of patch 6/6
Changes from v2:
* Style fixes in patch updating mbus protection
* Remove redundant stable notifications except for patch 4/6
Changes from v1:
* update MBUS windows access protection register once, after whole loop
* add fixing value of MVNETA_RXQ_INTR_ENABLE_ALL_MASK
* add fixing error path for skb_build()
* add possibility of setting custom TX IP checksum limit in DT property
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:46 +0000 (13:27 +0100)]
mvebu: dts: enable IP checksum with jumbo frames for Armada 38x on Port0
The Ethernet controller found in the Armada 38x SoC's family support
TCP/IP checksumming with frame sizes larger than 1600 bytes, however
only on port 0.
This commit enables it by setting 'tx-csum-limit' to 9800B in
'ethernet@70000' node.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:45 +0000 (13:27 +0100)]
net: mvneta: enable setting custom TX IP checksum limit
Since Armada 38x SoC can support IP checksum for jumbo frames only on
a single port, it means that this feature should be enabled per-port,
rather than for the whole SoC.
This patch enables setting custom TX IP checksum limit by adding new
optional property to the mvneta device tree node. If not used, by
default 1600B is set for "marvell,armada-370-neta" and 9800B for other
strings, which ensures backward compatibility. Binding documentation
is updated accordingly.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:44 +0000 (13:27 +0100)]
net: mvneta: fix error path for building skb
In the actual RX processing, there is same error path for both descriptor
ring refilling and building skb fails. This is not correct, because after
successful refill, the ring is already updated with newly allocated
buffer. Then, in case of build_skb() fail, hitherto code left the original
buffer unmapped.
This patch fixes above situation by swapping error check of skb build with
DMA-unmap of original buffer.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Acked-by: Simon Guinot <simon.guinot@sequanux.org> Cc: <stable@vger.kernel.org> # v4.2+
Fixes a84e32894191 ("net: mvneta: fix refilling for Rx DMA buffers") Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:43 +0000 (13:27 +0100)]
net: mvneta: fix bit assignment for RX packet irq enable
A value originally defined in the driver was inappropriate. Even though
the ingress was somehow working, writing MVNETA_RXQ_INTR_ENABLE_ALL_MASK
to MVNETA_INTR_ENABLE didn't make any effect, because the bits [31:16]
are reserved and read-only.
This commit updates MVNETA_RXQ_INTR_ENABLE_ALL_MASK to be compliant with
the controller's documentation.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network
unit") Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:42 +0000 (13:27 +0100)]
net: mvneta: fix bit assignment in MVNETA_RXQ_CONFIG_REG
MVNETA_RXQ_HW_BUF_ALLOC bit which controls enabling hardware buffer
allocation was mistakenly set as BIT(1). This commit fixes the assignment.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network
unit") Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:41 +0000 (13:27 +0100)]
net: mvneta: add configuration for MBUS windows access protection
This commit adds missing configuration of MBUS windows access protection
in mvneta_conf_mbus_windows function - a dedicated variable for that
purpose remained there unused since v3.8 initial mvneta support. Because
of that the register contents were inherited from the bootloader.
Signed-off-by: Marcin Wojtas <mw@semihalf.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network
unit") Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 3 Dec 2015 00:45:56 +0000 (16:45 -0800)]
Merge tag 'spi-fix-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There's one fix for the core here, we weren't reinitialising the
actual transferred length in messages when they get reused which meant
that we'd just keep adding to the length if a message is reused. This
has limited impact since it's only used in error handling cases but
will really mess anything that tries to use it up when it triggers.
As ever there's a small collection of driver specific fixes too"
* tag 'spi-fix-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: bugfix: spi_message.transfer_length does not get reset
spi: pl022: handle EPROBE_DEFER for dma
spi: bcm63xx: use correct format string for printing a resource
spi: mediatek: single device does not require cs_gpios
spi: Add missing kerneldoc description for parameter
In the last change here, I neglected to update the cookie in one code
path: when a mgmt-tx has no real cookie sent to userspace as it doesn't
wait for a response, but is off-channel. The original code used the SKB
pointer as the cookie and always assigned the cookie to the TX SKB in
ieee80211_start_roc_work(), but my change turned this around and made
the code rely on a valid cookie being passed in.
Unfortunately, the off-channel no-wait TX path wasn't assigning one at
all, resulting in an uninitialized stack value being used. This wasn't
handed back to userspace as a cookie (since in the no-wait case there
isn't a cookie), but it was tested for non-zero to distinguish between
mgmt-tx and off-channel.
Fix this by assigning a dummy non-zero cookie unconditionally, and get
rid of a misleading comment and some dead code while at it. I'll clean
up the ACK SKB handling separately later.
Fixes: 3b79af973cf4 ("mac80211: stop using pointers as userspace cookies") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
DFS channels should not be actively scanned as we can't be sure
if we are allowed or not.
If the current channel is in the DFS band, active scan might be
performed after CSA, but we have no guarantee about other channels,
therefore it is safer to prevent active scanning at all.
Cc: stable@vger.kernel.org Signed-off-by: Antonio Quartulli <antonio@open-mesh.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Eliad Peller [Tue, 17 Nov 2015 08:24:40 +0000 (10:24 +0200)]
mac80211: don't teardown sdata on sdata stop
Interfaces are being initialized (setup) on addition,
and torn down on removal.
However, p2p device is being torn down when stopped,
resulting in the next p2p start operation being done
on uninitialized interface.
Solve it by calling ieee80211_teardown_sdata() only
on interface removal (for the non-netdev case).
Signed-off-by: Eliad Peller <eliadx.peller@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
[squashed in fix to call teardown after unregister] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch series contains fixes for various issues observed
with BGX and NIC drivers.
Changes from v1:
- Fixed comment syle in the first patch of the series
- Removed 'Increase transmit queue length' patch from the series,
will recheck if it's a driver or system issue and resubmit.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sunil Goutham [Wed, 2 Dec 2015 10:06:17 +0000 (15:36 +0530)]
net: thunderx: Enable BGX LMAC's RX/TX only after VF is up
Enable or disable BGX LMAC's RX/TX based on corresponding VF's
status. If otherwise, when multiple LMAC's physical link is up
then packets from all LMAC's whose corresponding VF is not yet
initialized will get forwarded to VF0. This is due to VNIC's default
configuration where CPI, RSSI e.t.c point to VF0/QSET0/RQ0.
This patch will prevent multiple copies of packets on VF0.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Sunil Goutham [Wed, 2 Dec 2015 10:06:16 +0000 (15:36 +0530)]
net: thunderx: Switchon carrier only upon interface link up
Call netif_carrier_on() only if interface's link is up. Switching this on
upon IFF_UP by default, is causing issues with ethernet channel bonding
in LACP mode. Initial NETDEV_CHANGE notification was being skipped.
Also fixed some issues with link/speed/duplex reporting via ethtool.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: thunderx: Wait for delayed work to finish before destroying it
While VNIC or BGX driver teardown, wait for already scheduled delayed work to
finish before destroying it.
Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com> Signed-off-by: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: thunderx: Force to load octeon-mdio before bgx driver.
Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com> Signed-off-by: Sunil Goutham <sgoutham@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 2 Dec 2015 19:05:34 +0000 (11:05 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- regression fix for hid-lg driver from Benjamin Tissoires
- quirk for Logitech G710+ from Jimmy Berry
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: lg: restrict filtering out of first interface to G29 only
HID: usbhid: add Logitech G710+ keyboard quirk NOGET
Linus Torvalds [Wed, 2 Dec 2015 19:00:05 +0000 (11:00 -0800)]
Merge tag 'pinctrl-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pincontrol fixes from Linus Walleij:
"These are some v4.4 pin control fixes:
- Drop a redundant if-clause from Kconfig
- Fix a missing of_node_put() memory leak in the Freescale i.MX
driver
- Fix 64bit compilation of the Qualcomm SSBI driver.
- Fix a logic inversion in the Mediatek driver.
- Fix a compilation error for the odd one off in the Super-H instance
of the SH PFC driver"
* tag 'pinctrl-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: sh-pfc: sh7734: Add missing cfg macro parameter to fix build
pinctrl: mediatek: Add get_direction support.
pinctrl: fix qcom ssbi drivers for 64-bit compilation
pinctrl: imx1-core: add missing of_node_put
pinctrl: remove redundant if conditional from Kconfig
Linus Torvalds [Wed, 2 Dec 2015 18:54:03 +0000 (10:54 -0800)]
Merge tag 'gpio-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Some GPIO fixes for the v4.4 series:
- Fix a bunch of possible NULL references found by Coccinelle
jockeys.
- Stop creating Tegra's debugfs on everything and its dog. This is
an ARM multiplatform kernel issue.
- Fix an oops in gpiolib for NULL names on named GPIOs.
- Fix a complex OMAP1 bug in the OMAP driver"
* tag 'gpio-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: omap: drop omap1 mpuio specific irq_mask/unmask callbacks
gpiolib: fix oops, if gpio name is NULL
gpio-tegra: Do not create the debugfs entry by default
gpio: palmas: fix a possible NULL dereference
gpio: syscon: fix a possible NULL dereference
gpio: 74xx: fix a possible NULL dereference
Paolo Abeni [Mon, 30 Nov 2015 11:31:43 +0000 (12:31 +0100)]
openvswitch: properly refcount vport-vxlan module
After 614732eaa12d, no refcount is maintained for the vport-vxlan module.
This allows the userspace to remove such module while vport-vxlan
devices still exist, which leads to later oops.
v1 -> v2:
- move vport 'owner' initialization in ovs_vport_ops_register()
and make such function a macro
Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Mon, 30 Nov 2015 12:02:56 +0000 (13:02 +0100)]
bpf, array: fix heap out-of-bounds access when updating elements
During own review but also reported by Dmitry's syzkaller [1] it has been
noticed that we trigger a heap out-of-bounds access on eBPF array maps
when updating elements. This happens with each map whose map->value_size
(specified during map creation time) is not multiple of 8 bytes.
In array_map_alloc(), elem_size is round_up(attr->value_size, 8) and
used to align array map slots for faster access. However, in function
array_map_update_elem(), we update the element as ...
... where we access 'value' out-of-bounds, since it was allocated from
map_update_elem() from syscall side as kmalloc(map->value_size, GFP_USER)
and later on copied through copy_from_user(value, uvalue, map->value_size).
Thus, up to 7 bytes, we can access out-of-bounds.
Same could happen from within an eBPF program, where in worst case we
access beyond an eBPF program's designated stack.
Since 1be7f75d1668 ("bpf: enable non-root eBPF programs") didn't hit an
official release yet, it only affects priviledged users.
In case of array_map_lookup_elem(), the verifier prevents eBPF programs
from accessing beyond map->value_size through check_map_access(). Also
from syscall side map_lookup_elem() only copies map->value_size back to
user, so nothing could leak.
[1] http://github.com/google/syzkaller
Fixes: 28fbcfa08d8e ("bpf: add array type of eBPF maps") Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
tracing: Add sched_wakeup_new and sched_waking tracepoints for pid filter
The set_event_pid filter relies on attaching to the sched_switch and
sched_wakeup tracepoints to see if it should filter the tracing on schedule
tracepoints. By adding the callbacks to sched_wakeup, pids in the
set_event_pid file will trace the wakeups of those tasks with those pids.
But sched_wakeup_new and sched_waking were missed. These two should also be
traced. Luckily, these tracepoints share the same class as sched_wakeup
which means they can use the same pre and post callbacks as sched_wakeup
does.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Eric Dumazet [Mon, 30 Nov 2015 04:03:11 +0000 (20:03 -0800)]
net: fix sock_wake_async() rcu protection
Dmitry provided a syzkaller (http://github.com/google/syzkaller)
triggering a fault in sock_wake_async() when async IO is requested.
Said program stressed af_unix sockets, but the issue is generic
and should be addressed in core networking stack.
The problem is that by the time sock_wake_async() is called,
we should not access the @flags field of 'struct socket',
as the inode containing this socket might be freed without
further notice, and without RCU grace period.
We already maintain an RCU protected structure, "struct socket_wq"
so moving SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA into it
is the safe route.
It also reduces number of cache lines needing dirtying, so might
provide a performance improvement anyway.
In followup patches, we might move remaining flags (SOCK_NOSPACE,
SOCK_PASSCRED, SOCK_PASSSEC) to save 8 bytes and let 'struct socket'
being mostly read and let it being shared between cpus.
Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 30 Nov 2015 04:03:10 +0000 (20:03 -0800)]
net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
This patch is a cleanup to make following patch easier to
review.
Goal is to move SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
from (struct socket)->flags to a (struct socket_wq)->flags
to benefit from RCU protection in sock_wake_async()
To ease backports, we rename both constants.
Two new helpers, sk_set_bit(int nr, struct sock *sk)
and sk_clear_bit(int net, struct sock *sk) are added so that
following patch can change their implementation.
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Stephan Günther [Tue, 1 Dec 2015 20:23:22 +0000 (13:23 -0700)]
nvme: temporary fix for Apple controller reset
Recent patches added basic support for the Apple NVMe controller but
still cause resets and data corruption on that particular controller
when a specific pattern of read/flush commands occurs. Limiting the
queue depth to 2 works around that issue.
This patch enforces that limit only for the Apple controller and is
considered a temporary fix until we find the root source of that
problem.
Signed-off-by: Stephan Günther <guenther@tum.de> Signed-off-by: Maurice Leclaire <leclaire@in.tum.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
vmxnet3_drv does not check dma_addr with dma_mapping_error()
after mapping dma memory. The patch adds the checks and
tries to handle failures.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Shrikrishna Khare <skhare@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Peter Hurley [Fri, 27 Nov 2015 19:18:39 +0000 (14:18 -0500)]
wan/x25: Fix use-after-free in x25_asy_open_tty()
The N_X25 line discipline may access the previous line discipline's closed
and already-freed private data on open [1].
The tty->disc_data field _never_ refers to valid data on entry to the
line discipline's open() method. Rather, the ldisc is expected to
initialize that field for its own use for the lifetime of the instance
(ie. from open() to close() only).
Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
In IPv6, we cannot inherit the dst of the original dst. ndisc packets
are IPv6 packets and may take another route than the original packet.
This patch breaks the following scenario: a packet comes from eth0 and
is forwarded through vxlan1. The encapsulated packet triggers an NS
which cannot be sent because of the wrong route.
CC: Jiri Benc <jbenc@redhat.com> CC: Thomas Graf <tgraf@suug.ch> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
null_blk: change type of completion_nsec to unsigned long
This commit at least doubles the maximum value for
completion_nsec. This helps in special cases where one wants/needs to
emulate an extremely slow I/O (for example to spot bugs).
null_blk: guarantee device restart in all irq modes
In single-queue (block layer) mode,the function null_rq_prep_fn stops
the device if alloc_cmd fails. Then, once stopped, the device must be
restarted on the next command completion, so that the request(s) for
which alloc_cmd failed can be requeued. Otherwise the device hangs.
Unfortunately, device restart is currently performed only for delayed
completions, i.e., in irqmode==2. This fact causes hangs, for the
above reasons, with the other irqmodes in combination with single-queue
block layer.
This commits addresses this issue by making sure that, if stopped, the
device is properly restarted for all irqmodes on completions.
Paolo Valente [Tue, 1 Dec 2015 10:48:17 +0000 (11:48 +0100)]
null_blk: set a separate timer for each command
For the Timer IRQ mode (i.e., when command completions are delayed),
there is one timer for each CPU. Each of these timers
. has a completion queue associated with it, containing all the
command completions to be executed when the timer fires;
. is set, and a new completion-to-execute is inserted into its
completion queue, every time the dispatch code for a new command
happens to be executed on the CPU related to the timer.
This implies that, if the dispatch of a new command happens to be
executed on a CPU whose timer has already been set, but has not yet
fired, then the timer is set again, to the completion time of the
newly arrived command. When the timer eventually fires, all its queued
completions are executed.
This way of handling delayed command completions entails the following
problem: if more than one command completion is inserted into the
queue of a timer before the timer fires, then the expiration time for
the timer is moved forward every time each of these completions is
enqueued. As a consequence, only the last completion enqueued enjoys a
correct execution time, while all previous completions are unjustly
delayed until the last completion is executed (and at that time they
are executed all together).
Specifically, if all the above completions are enqueued almost at the
same time, then the problem is negligible. On the opposite end, if
every completion is enqueued a while after the previous completion was
enqueued (in the extreme case, it is enqueued only right before the
timer would have expired), then every enqueued completion, except for
the last one, experiences an inflated delay, proportional to the number
of completions enqueued after it. In the end, commands, and thus I/O
requests, may be completed at an arbitrarily lower rate than the
desired one.
This commit addresses this issue by replacing per-CPU timers with
per-command timers, i.e., by associating an individual timer with each
command.
Linus Torvalds [Tue, 1 Dec 2015 17:43:06 +0000 (09:43 -0800)]
Merge tag 'remoteproc-4.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc
Pull remoteproc fixes from Ohad Ben-Cohen:
"Two one-liners coming from Suman and Arnd"
* tag 'remoteproc-4.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
remoteproc: fix memory leak of remoteproc ida cache layers
remoteproc: avoid stack overflow in debugfs file
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:2: error: '_GP_DATA' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
...
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:1: error: macro "_GP_INOUTSEL" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:53: error: '_GP_INOUTSEL' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:2: warning: initialization makes integer from pointer without a cast [enabled by default]
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:2: warning: (near initialization for '(anonymous)[0]') [enabled by default]
...
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:1: error: macro "_GP_INDT" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:47: error: '_GP_INDT' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:2: warning: initialization makes integer from pointer without a cast [enabled by default]
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:2: warning: (near initialization for '(anonymous)[0]') [enabled by default]
...
Add the missing "cfg" macro parameters to the sh7734-specific
_GP_DATA(), _GP_INOUTSEL(), and _GP_INDT() macros to fix this.
Fixes: 22768fc60abbf58b ("pinctrl: sh-pfc: Add macros defining GP ports with config flags") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Torvalds [Tue, 1 Dec 2015 00:06:44 +0000 (16:06 -0800)]
Merge tag 'mn10300-for-linus-v4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull mn10300 fix from Guenter Roeck:
"A single patch to fix mn10300 build failures"
* tag 'mn10300-for-linus-v4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
mn10300: Select CONFIG_HAVE_UID16 to fix build failure
Linus Torvalds [Mon, 30 Nov 2015 23:38:23 +0000 (15:38 -0800)]
Merge tag 'trace-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"I found two minor bugs while doing development on the ring buffer
code.
The first is something that's been there since its creation. If a
reader reads a page out of the ring buffer before there's any events
on it, it can get an out of date timestamp for that event. It may be
off by a few microseconds, more if the first event gets discarded.
The fix was to only update the reader time stamp when it actually sees
an event on the page, instead of just reading the timestamp from the
page even if it has no events on it. That timestamp is still volatile
until an event is present.
The second bug is more recent. Instead of passing around parameters a
descriptor was made and the parameters are passed via a single
descriptor. This simplified the code a bit. But there was one place
that expected the parameter to be passed by value not reference (which
a descriptor now does). And it added to the length of the event,
which may be ignored later, but the length should not have been
increased. The only real problem with this bug is that it may
allocate more than was needed for the event"
* tag 'trace-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ring-buffer: Put back the length if crossed page with add_timestamp
ring-buffer: Update read stamp with first real commit on page
His program is specifically attempting a Cross SYN TCP exchange,
that we support (for the pleasure of hackers ?), but it looks we
lack proper tcp->copied_seq initialization.
Thanks again Dmitry for your report and testings.
Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Brown [Thu, 26 Nov 2015 11:59:46 +0000 (11:59 +0000)]
net: fsl: Fix error checking for platform_get_irq()
The gianfar driver has recently been enabled on arm64 but fails to build
since it check the return value of platform_get_irq() against NO_IRQ. Fix
this by instead checking for a negative error code.
Even on ARM where this code was previously being built this check was
incorrect since platform_get_irq() returns a negative error code which
may not be exactly the (unsigned int)(-1) that NO_IRQ is defined to be.
Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Brown [Thu, 26 Nov 2015 11:59:45 +0000 (11:59 +0000)]
net: fsl: Don't use NO_IRQ to check return value of irq_of_parse_and_map()
This driver can be built on arm64 but relies on NO_IRQ to check the return
value of irq_of_parse_and_map() which fails to build on arm64 because the
architecture does not provide a NO_IRQ. Fix this to correctly check the
return value of irq_of_parse_and_map().
Even on ARM systems where the driver was previously used the check was
broken since on ARM NO_IRQ is -1 but irq_of_parse_and_map() returns 0 on
error.
Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
sendpage did not care about credentials at all. This could lead to
situations in which because of fd passing between processes we could
append data to skbs with different scm data. It is illegal to splice those
skbs together. Instead we have to allocate a new skb and if requested
fill out the scm details.
Fixes: 869e7c62486ec ("net: af_unix: implement stream sendpage support") Reported-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Ming Lei [Mon, 30 Nov 2015 08:05:49 +0000 (16:05 +0800)]
blk-merge: fix computing bio->bi_seg_front_size in case of single segment
When bio has only one physical segment, we should set bio's
bi_seg_front_size as the real(final) size of the single segment.
Fixes: 02e707424c2ea(blk-merge: fix blk_bio_segment_split) Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Ming Lei <ming.lei@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
David S. Miller [Mon, 30 Nov 2015 19:52:52 +0000 (14:52 -0500)]
Merge branch 'stmmac-fixes'
Giuseppe Cavallaro says:
====================
Spare stmmac fixes
These are some fixes for the stmmac d.d. tested on STi platforms.
They are for some part of the PM, STi glue and rx path when test
Jumbo.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The receive skb buffers can be preallocated when the link is opened
according to mtu size.
While testing on a network environment with not standard MTU (e.g. 3000),
a panic occurred if an incoming packet had a length greater than rx skb
buffer size. This is because the HW is programmed to copy, from the DMA,
an Jumbo frame and the Sw must check if the allocated buffer is enough to
store the frame.
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
When stmmac_mdio_reset, was called from stmmac_resume, it was not
resetting the PHY due to which MAC was not getting reset properly and
hence ethernet interface not was resumed properly.
The issue was currently only reproducible on stih301-b2204.
Signed-off-by: Pankaj Dev <pankaj.dev@st.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
In case of the st,tx-retime-src is missing from device-tree
(it's an optional field) the driver will invoke the strcasecmp to check
which clock has been selected and this is a bug; the else condition
is needed.
In the dwmac_setup, the "rs" variable, passed to the strcasecmp, was not
initialized and the compiler, depending on the options adopted, could
take it in some different part of the stack generating the hang in such
configuration.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is to fix the csr clock in case of 300MHz is provided.
Reported-by: Kent Borg <Kent.Borg@csr.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-eoan-kernel.git / log