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If an error occurs in mlx4_init_eq_table the index used in the
err_out_unmap label is one too big which results in a panic in
mlx4_free_eq. This patch fixes the index in the error path.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* better mesh path fixing, from Thomas
* fix TIM IE recalculation after sending frames
to a sleeping station, from Felix
* fix sequence number assignment while sending
frames to a sleeping station, also from Felix
* validate number of probe response CSA counter
offsets, fixing a copy/paste bug (from myself)
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Merge tag 'mac80211-for-davem-2016-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A few more fixes:
* better mesh path fixing, from Thomas
* fix TIM IE recalculation after sending frames
to a sleeping station, from Felix
* fix sequence number assignment while sending
frames to a sleeping station, also from Felix
* validate number of probe response CSA counter
offsets, fixing a copy/paste bug (from myself)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Due to an apparent copy/paste bug, the number of counters for the
beacon configuration were checked twice, instead of checking the
number of probe response counters. Fix this to check the number of
probe response counters before parsing those.
Cc: stable@vger.kernel.org
Fixes: 9a774c78e2 ("cfg80211: Support multiple CSA counters")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If 'IS_ERR(pdata->clk)' is true, then 'clk_disable_unprepare(pdata->clk)'
will do nothing.
It is likely that 'if (!IS_ERR(pdata->clk))' was expected here.
In fact, the test can even be removed because 'clk_disable_unprepare'
already handles such cases.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 4f00878126 ("sctp: apply rhashtable api to send/recv
path"), sctp uses transport rhashtable with .obj_cmpfn sctp_hash_cmp,
in which it compares the members of the transport with the rhashtable
args to check if it's the right transport.
But sctp uses the transport without holding it in sctp_hash_cmp, it can
cause a use-after-free panic. As after it gets transport from hashtable,
another CPU may close the sk and free the asoc. In sctp_association_free,
it frees all the transports, meanwhile, the assoc's refcnt may be reduced
to 0, assoc can be destroyed by sctp_association_destroy.
So after that, transport->assoc is actually an unavailable memory address
in sctp_hash_cmp. Although sctp_hash_cmp is under rcu_read_lock, it still
can not avoid this, as assoc is not freed by RCU.
This patch is to hold the transport before checking it's members with
sctp_transport_hold, in which it checks the refcnt first, holds it if
it's not 0.
Fixes: 4f00878126 ("sctp: apply rhashtable api to send/recv path")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When system enters into kdump kernel because of kernel panic, it won't
shutdown devices. On-flight DMA will continue transferring data until
device driver initializes. All devices are supposed to reset during
driver initialization. And this property is used to fix the kdump
failure in system with intel iommu. Other systems with hardware iommu
should be similar. Please check commit 091d42e ("iommu/vt-d: Copy
translation tables from old kernel") and those commits around.
But bnx2 driver doesn't reset device during driver initialization. The
device resetting is deferred to net device up stage. This will cause
hardware iommu handling failure on bnx2 device. And its resetting relies
on firmware. So in this patch move the firmware requesting code to earlier
bnx2_init_one(), then next call bnx2_reset_chip to reset device.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree,
they are:
1) Endianess fix for the new nf_tables netlink trace infrastructure,
NFTA_TRACE_POLICY endianess was not correct, patch from Liping Zhang.
2) Fix broken re-route after userspace queueing in nf_tables route
chain. This patch is large but it is simple since it is just getting
this code in sync with iptable_mangle. Also from Liping.
3) NAT mangling via ctnetlink lies to userspace when nf_nat_setup_info()
fails to setup the NAT conntrack extension. This problem has been
there since the beginning, but it can now show up after rhashtable
conversion.
4) Fix possible NULL pointer dereference due to failures in allocating
the synproxy and seqadj conntrack extensions, from Gao feng.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When memory is exhausted, nfct_seqadj_ext_add may fail to add the
synproxy and seqadj extensions. The function nf_ct_seqadj_init doesn't
check if get valid seqadj pointer by the nfct_seqadj.
Now drop the packet directly when fail to add seqadj extension to
avoid dereference NULL pointer in nf_ct_seqadj_init from
init_conntrack().
Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
nf_nat_setup_info() returns NF_* verdicts, so convert them to error
codes that is what ctnelink expects. This has passed overlook without
having any impact since this nf_nat_setup_info() has always returned
NF_ACCEPT so far. Since 870190a9ec ("netfilter: nat: convert nat bysrc
hash to rhashtable"), this is problem.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pull networking fixes from David Miller:
"Mostly small sets of driver fixes scattered all over the place.
1) Mediatek driver fixes from Sean Wang. Forward port not written
correctly during TX map, missed handling of EPROBE_DEFER, and
mistaken use of put_page() instead of skb_free_frag().
2) Fix socket double-free in KCM code, from WANG Cong.
3) QED driver fixes from Sudarsana Reddy Kalluru, including a fix for
using the dcbx buffers before initializing them.
4) Mellanox Switch driver fixes from Jiri Pirko, including a fix for
double fib removals and an error handling fix in
mlxsw_sp_module_init().
5) Fix kernel panic when enabling LLDP in i40e driver, from Dave
Ertman.
6) Fix padding of TSO packets in thunderx driver, from Sunil Goutham.
7) TCP's rcv_wup not initialized properly when using fastopen, from
Neal Cardwell.
8) Don't use uninitialized flow keys in flow dissector, from Gao
Feng.
9) Use after free in l2tp module unload, from Sabrina Dubroca.
10) Fix interrupt registry ordering issues in smsc911x driver, from
Jeremy Linton.
11) Fix crashes in bonding having to do with enslaving and rx_handler,
from Mahesh Bandewar.
12) AF_UNIX deadlock fixes from Linus.
13) In mlx5 driver, don't read skb->xmit_mode after it might have been
freed from the TX reclaim path. From Tariq Toukan.
14) Fix a bug from 2015 in TCP Yeah where the congestion window does
not increase, from Artem Germanov.
15) Don't pad frames on receive in NFP driver, from Jakub Kicinski.
16) Fix chunk fragmenting in SCTP wrt. GSO, from Marcelo Ricardo
Leitner.
17) Fix deletion of VRF routes, from Mark Tomlinson.
18) Fix device refcount leak when DAD fails in ipv6, from Wei Yongjun"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (101 commits)
net/mlx4_en: Fix panic on xmit while port is down
net/mlx4_en: Fixes for DCBX
net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_state()
net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_all()
net: ethernet: renesas: sh_eth: add POST registers for rz
drivers: net: phy: mdio-xgene: Add hardware dependency
dwc_eth_qos: do not register semi-initialized device
sctp: identify chunks that need to be fragmented at IP level
mlxsw: spectrum: Set port type before setting its address
mlxsw: spectrum_router: Fix error path in mlxsw_sp_router_init
nfp: don't pad frames on receive
nfp: drop support for old firmware ABIs
nfp: remove linux/version.h includes
tcp: cwnd does not increase in TCP YeAH
net/mlx5e: Fix parsing of vlan packets when updating lro header
net/mlx5e: Fix global PFC counters replication
net/mlx5e: Prevent casting overflow
net/mlx5e: Move an_disable_cap bit to a new position
net/mlx5e: Fix xmit_more counter race issue
tcp: fastopen: avoid negative sk_forward_alloc
...
A fixed mpath was not quite being treated as such:
1) if a PERR frame was received, a fixed mpath was
deactivated.
2) queued path discovery for fixed mpath was potentially
being considered, changing mpath state.
3) other mpath flags were potentially being inherited when
fixing the mpath. Just assign PATH_FIXED and SN_VALID.
This solves several issues when fixing a mesh path in one
direction. The reverse direction mpath should probably
also be fixed, or root announcements at least be enabled.
Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When using intermediate queues, sequence number allocation is deferred
until dequeue. This doesn't work for PS response frames, which bypass
those queues.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Handle the case where the mac80211 intermediate queues are empty and the
driver has buffered frames
Fixes: ba8c3d6f16 ("mac80211: add an intermediate software queue implementation")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tariq Toukan says:
====================
mlx4 fixes
This patchset contains several bug fixes from the team to the
mlx4 Eth driver.
Series generated against net commit:
c2f57fb97d "drivers: net: phy: mdio-xgene: Add hardware dependency"
v2:
* excluded some cleanup patches.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When port is down, tx drop counter update is not needed.
Updating the counter in this case can cause a kernel
panic as when the port is down, ring can be NULL.
Fixes: 63a664b7e9 ("net/mlx4_en: fix tx_dropped bug")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a capability check before enabling DCBX.
In addition, it re-organizes the relevant data structures,
and fixes a typo in a define.
Fixes: af7d518526 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
mlx4_en_dcbnl_set_state() returns u8, the return value from
mlx4_en_setup_tc() could be negative in case of failure, so fix that.
Fixes: af7d518526 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
mlx4_en_dcbnl_set_all() returns u8, so return value can't be negative in
case of failure.
Fixes: af7d518526 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Rana Shahout <ranas@mellanox.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit aa71987472 ("nvme: fabrics drivers don't need the nvme-pci
driver") removed the dependency on BLK_DEV_NVME, but the cdoe does
depend on the block layer (which used to be an implicit dependency
through BLK_DEV_NVME).
Otherwise you get various errors from the kbuild test robot random
config testing when that happens to hit a configuration with BLOCK
device support disabled.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jay Freyensee <james_p_freyensee@linux.intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are a few small IIO fixes for 4.8-rc6.
Nothing major, full details are in the shortlog, all of these have been
in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull IIO fixes from Greg KH:
"Here are a few small IIO fixes for 4.8-rc6.
Nothing major, full details are in the shortlog, all of these have
been in linux-next with no reported issues"
* tag 'staging-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio:core: fix IIO_VAL_FRACTIONAL sign handling
iio: ensure ret is initialized to zero before entering do loop
iio: accel: kxsd9: Fix scaling bug
iio: accel: bmc150: reset chip at init time
iio: fix pressure data output unit in hid-sensor-attributes
tools:iio:iio_generic_buffer: fix trigger-less mode
Here are some small USB gadget, phy, and xhci fixes for 4.8-rc6.
All of these resolve minor issues that have been reported, and all have
been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB gadget, phy, and xhci fixes for 4.8-rc6.
All of these resolve minor issues that have been reported, and all
have been in linux-next with no reported issues"
* tag 'usb-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
xhci: fix null pointer dereference in stop command timeout function
usb: dwc3: pci: fix build warning on !PM_SLEEP
usb: gadget: prevent potenial null pointer dereference on skb->len
usb: renesas_usbhs: fix clearing the {BRDY,BEMP}STS condition
usb: phy: phy-generic: Check clk_prepare_enable() error
usb: gadget: udc: renesas-usb3: clear VBOUT bit in DRD_CON
Revert "usb: dwc3: gadget: always decrement by 1"
Due to a mistake in the hardware manual, the FWSLC and POST1-4 registers
were not documented and left out of the driver for RZ/A making the CAM
feature non-operational.
Additionally, when the offset values for POST1-4 are left blank, the driver
attempts to set them using an offset of 0xFFFF which can cause a memory
corruption or panic.
This patch fixes the panic and properly enables CAM.
Reported-by: Daniel Palmer <daniel@0x0f.com>
Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull libnvdimm fixes from Dan Williams:
"nvdimm fixes for v4.8, two of them are tagged for -stable:
- Fix devm_memremap_pages() to use track_pfn_insert(). Otherwise,
DAX pmd mappings end up with an uncached pgprot, and unusable
performance for the device-dax interface. The device-dax interface
appeared in 4.7 so this is tagged for -stable.
- Fix a couple VM_BUG_ON() checks in the show_smaps() path to
understand DAX pmd entries. This fix is tagged for -stable.
- Fix a mis-merge of the nfit machine-check handler to flip the
polarity of an if() to match the final version of the patch that
Vishal sent for 4.8-rc1. Without this the nfit machine check
handler never detects / inserts new 'badblocks' entries which
applications use to identify lost portions of files.
- For test purposes, fix the nvdimm_clear_poison() path to operate on
legacy / simulated nvdimm memory ranges. Without this fix a test
can set badblocks, but never clear them on these ranges.
- Fix the range checking done by dax_dev_pmd_fault(). This is not
tagged for -stable since this problem is mitigated by specifying
aligned resources at device-dax setup time.
These patches have appeared in a next release over the past week. The
recent rebase you can see in the timestamps was to drop an invalid fix
as identified by the updated device-dax unit tests [1]. The -mm
touches have an ack from Andrew"
[1]: "[ndctl PATCH 0/3] device-dax test for recent kernel bugs"
https://lists.01.org/pipermail/linux-nvdimm/2016-September/006855.html
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm: allow legacy (e820) pmem region to clear bad blocks
nfit, mce: Fix SPA matching logic in MCE handler
mm: fix cache mode of dax pmd mappings
mm: fix show_smap() for zone_device-pmd ranges
dax: fix mapping size check
Pull i2c fixes from Wolfram Sang:
"Mostly driver bugfixes, but also a few cleanups which are nice to have
out of the way"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: rk3x: Restore clock settings at resume time
i2c: Spelling s/acknowedge/acknowledge/
i2c: designware: save the preset value of DW_IC_SDA_HOLD
Documentation: i2c: slave-interface: add note for driver development
i2c: mux: demux-pinctrl: run properly with multiple instances
i2c: bcm-kona: fix inconsistent indenting
i2c: rcar: use proper device with dma_mapping_error
i2c: sh_mobile: use proper device with dma_mapping_error
i2c: mux: demux-pinctrl: invalidate properly when switching fails
allows a malicious user to set an encryption policy on an empty
directory which they do not own.
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Merge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull fscrypto fixes fromTed Ts'o:
"Fix some brown-paper-bag bugs for fscrypto, including one one which
allows a malicious user to set an encryption policy on an empty
directory which they do not own"
* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
fscrypto: require write access to mount to set encryption policy
fscrypto: only allow setting encryption policy on directories
fscrypto: add authorization check for setting encryption policy
Since setting an encryption policy requires writing metadata to the
filesystem, it should be guarded by mnt_want_write/mnt_drop_write.
Otherwise, a user could cause a write to a frozen or readonly
filesystem. This was handled correctly by f2fs but not by ext4. Make
fscrypt_process_policy() handle it rather than relying on the filesystem
to get it right.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
The FS_IOC_SET_ENCRYPTION_POLICY ioctl allowed setting an encryption
policy on nondirectory files. This was unintentional, and in the case
of nonempty regular files did not behave as expected because existing
data was not actually encrypted by the ioctl.
In the case of ext4, the user could also trigger filesystem errors in
->empty_dir(), e.g. due to mismatched "directory" checksums when the
kernel incorrectly tried to interpret a regular file as a directory.
This bug affected ext4 with kernels v4.8-rc1 or later and f2fs with
kernels v4.6 and later. It appears that older kernels only permitted
directories and that the check was accidentally lost during the
refactoring to share the file encryption code between ext4 and f2fs.
This patch restores the !S_ISDIR() check that was present in older
kernels.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
On an ext4 or f2fs filesystem with file encryption supported, a user
could set an encryption policy on any empty directory(*) to which they
had readonly access. This is obviously problematic, since such a
directory might be owned by another user and the new encryption policy
would prevent that other user from creating files in their own directory
(for example).
Fix this by requiring inode_owner_or_capable() permission to set an
encryption policy. This means that either the caller must own the file,
or the caller must have the capability CAP_FOWNER.
(*) Or also on any regular file, for f2fs v4.6 and later and ext4
v4.8-rc1 and later; a separate bug fix is coming for that.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The mdio-xgene driver is only useful on X-Gene SoC.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Iyappan Subramanian <isubramanian@apm.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
iwlwifi
* fix P2P dump trigger
* prevent a potential null dereference in iwlmvm
* prevent an uninitialized value from being returned in iwlmvm
* advertise support for channel width change in AP mode
ath10k
* fix racy rx status retrieval from htt context
* QCA9887 support is not experimental anymore, remove the warning message
ath9k
* fix regression with led GPIOs
* fix AR5416 GPIO access warning
brcmfmac
* avoid potential stack overflow in brcmf_cfg80211_start_ap()
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Merge tag 'wireless-drivers-for-davem-2016-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.8
iwlwifi
* fix P2P dump trigger
* prevent a potential null dereference in iwlmvm
* prevent an uninitialized value from being returned in iwlmvm
* advertise support for channel width change in AP mode
ath10k
* fix racy rx status retrieval from htt context
* QCA9887 support is not experimental anymore, remove the warning message
ath9k
* fix regression with led GPIOs
* fix AR5416 GPIO access warning
brcmfmac
* avoid potential stack overflow in brcmf_cfg80211_start_ap()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We move register_netdev() to the end of dwceqos_probe() to close any
races where the netdev callbacks are called before the initialization
has finished.
Reported-by: Pavel Andrianov <andrianov@ispras.ru>
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Previously, without GSO, it was easy to identify it: if the chunk didn't
fit and there was no data chunk in the packet yet, we could fragment at
IP level. So if there was an auth chunk and we were bundling a big data
chunk, it would fragment regardless of the size of the auth chunk. This
also works for the context of PMTU reductions.
But with GSO, we cannot distinguish such PMTU events anymore, as the
packet is allowed to exceed PMTU.
So we need another check: to ensure that the chunk that we are adding,
actually fits the current PMTU. If it doesn't, trigger a flush and let
it be fragmented at IP level in the next round.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bad blocks can be injected via /sys/block/pmemN/badblocks. In a situation
where legacy pmem is being used or a pmem region created by using memmap
kernel parameter, the injected bad blocks are not cleared due to
nvdimm_clear_poison() failing from lack of ndctl function pointer. In
this case we need to just return as handled and allow the bad blocks to
be cleared rather than fail.
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The check for a 'pmem' type SPA in the MCE handler was inverted due to a
merge/rebase error.
Fixes: 6839a6d nfit: do an ARS scrub on hitting a latent media error
Cc: linux-acpi@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
track_pfn_insert() in vmf_insert_pfn_pmd() is marking dax mappings as
uncacheable rendering them impractical for application usage. DAX-pte
mappings are cached and the goal of establishing DAX-pmd mappings is to
attain more performance, not dramatically less (3 orders of magnitude).
track_pfn_insert() relies on a previous call to reserve_memtype() to
establish the expected page_cache_mode for the range. While memremap()
arranges for reserve_memtype() to be called, devm_memremap_pages() does
not. So, teach track_pfn_insert() and untrack_pfn() how to handle
tracking without a vma, and arrange for devm_memremap_pages() to
establish the write-back-cache reservation in the memtype tree.
Cc: <stable@vger.kernel.org>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Nilesh Choudhury <nilesh.choudhury@oracle.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Toshi Kani <toshi.kani@hpe.com>
Reported-by: Kai Zhang <kai.ka.zhang@oracle.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Attempting to dump /proc/<pid>/smaps for a process with pmd dax mappings
currently results in the following VM_BUG_ONs:
kernel BUG at mm/huge_memory.c:1105!
task: ffff88045f16b140 task.stack: ffff88045be14000
RIP: 0010:[<ffffffff81268f9b>] [<ffffffff81268f9b>] follow_trans_huge_pmd+0x2cb/0x340
[..]
Call Trace:
[<ffffffff81306030>] smaps_pte_range+0xa0/0x4b0
[<ffffffff814c2755>] ? vsnprintf+0x255/0x4c0
[<ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
[<ffffffff8123c8a2>] walk_page_vma+0x62/0x80
[<ffffffff81307656>] show_smap+0xa6/0x2b0
kernel BUG at fs/proc/task_mmu.c:585!
RIP: 0010:[<ffffffff81306469>] [<ffffffff81306469>] smaps_pte_range+0x499/0x4b0
Call Trace:
[<ffffffff814c2795>] ? vsnprintf+0x255/0x4c0
[<ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
[<ffffffff8123c8a2>] walk_page_vma+0x62/0x80
[<ffffffff81307696>] show_smap+0xa6/0x2b0
These locations are sanity checking page flags that must be set for an
anonymous transparent huge page, but are not set for the zone_device
pages associated with dax mappings.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Jiri Pirko says:
====================
mlxsw: couple of fixes
Couple of fixes from Ido and myself.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
During port init, we currently set the port's type to Ethernet after
setting its MAC address. However, the hardware documentation states this
should be the other way around.
Align the driver with the hardware documentation and set the port's MAC
address after setting its type.
Fixes: 56ade8fe3f ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When neigh_init fails, we have to do proper cleanup including
router_fini call.
Fixes: 6cf3c971dc ("mlxsw: spectrum_router: Add private neigh table")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This includes a couple of bugfixs for virtio.
The virtio console patch is actually also
in x86/tip targeting 4.9 because it helps vmap
stacks, but it also fixes IOMMU_PLATFORM which
was added in 4.8, and it seems important not to
ship that in a broken configuration.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"This includes a couple of bugfixs for virtio.
The virtio console patch is actually also in x86/tip targeting 4.9
because it helps vmap stacks, but it also fixes IOMMU_PLATFORM which
was added in 4.8, and it seems important not to ship that in a broken
configuration"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_console: Stop doing DMA on the stack
virtio: mark vring_dma_dev() static
- If the PM QoS framework invokes cancel_delayed_work_sync() during
early boot, it will enable interrupts which is not expected at
that point, so prevent it from happening (Tejun Heo).
- Fix cpufreq statistic documentation to follow a recent change in
behavior that forgot to update it as appropriate (Jean Delvare).
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Merge tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"This includes a PM QoS framework fix from Tejun to prevent interrupts
from being enabled unexpectedly during early boot and a cpufreq
documentation fix.
Specifics:
- If the PM QoS framework invokes cancel_delayed_work_sync() during
early boot, it will enable interrupts which is not expected at that
point, so prevent it from happening (Tejun Heo)
- Fix cpufreq statistic documentation to follow a recent change in
behavior that forgot to update it as appropriate (Jean Delvare)"
* tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq-stats: Minor documentation fix
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
- Revert a pointless attempt to add an include to solve the UM
allyes compilation problem.
- Make the mcp23s08 depend on OF_GPIO as it uses it and doesn't
compile properly without it.
- Fix a probing problem for ucb1x00.
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Merge tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Some GPIO fixes that have been boiling the last two weeks or so.
Nothing special, I'm trying to sort out some Kconfig business and
Russell needs a fix in for -his SA1100 rework.
Summary:
- Revert a pointless attempt to add an include to solve the UM allyes
compilation problem.
- Make the mcp23s08 depend on OF_GPIO as it uses it and doesn't
compile properly without it.
- Fix a probing problem for ucb1x00"
* tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: sa1100: fix irq probing for ucb1x00
gpio: mcp23s08: make driver depend on OF_GPIO
Revert "gpio: include <linux/io-mapping.h> in gpiolib-of"
Pull fuse fix from Miklos Szeredi:
"This fixes a deadlock when fuse, direct I/O and loop device are
combined"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: direct-io: don't dirty ITER_BVEC pages
Pull overlayfs fix from Miklos Szeredi:
"This fixes a regression caused by the last pull request"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix workdir creation
Pull btrfs fixes from Chris Mason:
"I'm not proud of how long it took me to track down that one liner in
btrfs_sync_log(), but the good news is the patches I was trying to
blame for these problems were actually fine (sorry Filipe)"
* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: introduce tickets_id to determine whether asynchronous metadata reclaim work makes progress
btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns
btrfs: do not decrease bytes_may_use when replaying extents
We've got quite a few fixes at this time, and all are stable patches.
syzkaller strikes back again (episode 19 or so), and we had to plug
some holes in ALSA core part (mostly timer). In addition, a couple of
FireWire audio fixes for the invalid copy user calls in locks, and a
few quirks for HD-audio and USB-audio as usual are included.
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Merge tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"We've got quite a few fixes at this time, and all are stable patches.
syzkaller strikes back again (episode 19 or so), and we had to plug
some holes in ALSA core part (mostly timer).
In addition, a couple of FireWire audio fixes for the invalid copy
user calls in locks, and a few quirks for HD-audio and USB-audio as
usual are included"
* tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: rawmidi: Fix possible deadlock with virmidi registration
ALSA: timer: Fix zero-division by continue of uninitialized instance
ALSA: timer: fix NULL pointer dereference in read()/ioctl() race
ALSA: fireworks: accessing to user space outside spinlock
ALSA: firewire-tascam: accessing to user space outside spinlock
ALSA: hda - Enable subwoofer on Dell Inspiron 7559
ALSA: hda - Add headset mic quirk for Dell Inspiron 5468
ALSA: usb-audio: Add sample rate inquiry quirk for B850V3 CP2114
ALSA: timer: fix NULL pointer dereference on memory allocation failure
ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE
virtio_console uses a small DMA buffer for control requests. Move
that buffer into heap memory.
Doing virtio DMA on the stack is normally okay on non-DMA-API virtio
systems (which is currently most of them), but it breaks completely
if the stack is virtually mapped.
Tested by typing both directions using picocom aimed at /dev/hvc0.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
We get 1 warning when building kernel with W=1:
drivers/virtio/virtio_ring.c:170:16: warning: no previous prototype for 'vring_dma_dev' [-Wmissing-prototypes]
In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
so this patch marks this function with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
