Currently the list is traversed using rcu variant. That is not correct
since dev_set_mac_address can be called which eventually calls
rtmsg_ifinfo_build_skb and there, skb allocation can sleep. So fix this
by remove the rcu usage here.
Fixes: 3d249d4ca7 "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Iyappan Subramanian says:
====================
drivers: net: xgene: Fix backward compatibility of newer firmware with older kernel
Kernel 3.17 driver supports only RGMII ethernet interface.
Since the Tianocore DT contains same compatibility string for RGMII,
SGMII based 1G and XFI based 10G interfaces, crash happens when probe called
on SGMII based 1G and XFI based 10G interface.
This patch fixes the backward compatibility of the older driver with the
newer firmware by making the binding unique so that the older driver won't
recognize the non-supported interfaces.
v2: Address comments from v1
* updated cover letter subject line with net: xgene
* Documentation: formatted compatible string values as list
v1:
* Initial version
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the backward compatibile of the older driver with the
newer firmware by making the binding unique so that the older driver won't
recognize the non-supported interfaces.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the backward compatibility of the older driver with the
newer firmware by making the binding unique so that the older driver won't
recognize the non-supported interfaces.
The new bindings are in sync with the newer firmware.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1. For an IPv4 ping socket, ping_check_bind_addr does not check
the family of the socket address that's passed in. Instead,
make it behave like inet_bind, which enforces either that the
address family is AF_INET, or that the family is AF_UNSPEC and
the address is 0.0.0.0.
2. For an IPv6 ping socket, ping_check_bind_addr returns EINVAL
if the socket family is not AF_INET6. Return EAFNOSUPPORT
instead, for consistency with inet6_bind.
3. Make ping_v4_sendmsg and ping_v6_sendmsg return EAFNOSUPPORT
instead of EINVAL if an incorrect socket address structure is
passed in.
4. Make IPv6 ping sockets be IPv6-only. The code does not support
IPv4, and it cannot easily be made to support IPv4 because
the protocol numbers for ICMP and ICMPv6 are different. This
makes connect(::ffff:192.0.2.1) fail with EAFNOSUPPORT instead
of making the socket unusable.
Among other things, this fixes an oops that can be triggered by:
int s = socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP);
struct sockaddr_in6 sin6 = {
.sin6_family = AF_INET6,
.sin6_addr = in6addr_any,
};
bind(s, (struct sockaddr *) &sin6, sizeof(sin6));
Change-Id: If06ca86d9f1e4593c0d6df174caca3487c57a241
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case there was some tx buffer reclaimed and not enough rx packets
to consume the whole budget, napi_complete would not be called and
interrupts would be kept disabled, effectively resulting in the
network core never to call the poll callback again and no rx/tx
interrupts to be fired either.
Fix that by only accounting the rx work done in the poll callback.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently we're getting IRQs after lots of resources are already
allocated:
* netdev
* clocks
* MDIO bus
Also HW gets initialized by the time when checking IRQs as well.
Now there's a possibility for master interrupt controller to be not
probed yet. This will lead to exit from GMAC probe routine with "-
EPROBE_DEFER" and so deferred probe will hapen later on.
But since we exited the first GMAC probe without release of all
allocated resources there could be conflicts on subsequent probes.
For example this is what happens for me:
--->8---
stmmaceth e0018000.ethernet: no reset control found
stmmac - user ID: 0x10, Synopsys ID: 0x37
Ring mode enabled
DMA HW capability register supported
Normal descriptors
RX Checksum Offload Engine supported (type 2)
TX Checksum insertion supported
Enable RX Mitigation via HW Watchdog Timer
libphy: stmmac: probed
eth0: PHY ID 20005c7a at 1 IRQ POLL (stmmac-0:01) active
platform e0018000.ethernet: Driver stmmaceth requests probe deferral
...
...
...
stmmaceth e0018000.ethernet: no reset control found
stmmac - user ID: 0x10, Synopsys ID: 0x37
Ring mode enabled
DMA HW capability register supported
Normal descriptors
RX Checksum Offload Engine supported (type 2)
TX Checksum insertion supported
Enable RX Mitigation via HW Watchdog Timer
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x4e/0x68()
sysfs: cannot create duplicate filename
'/devices/platform/axs10x_mb/e0018000.ethernet/mdio_bus/stmmac-0'
CPU: 0 PID: 6 Comm: kworker/u2:0 Not tainted 4.0.0-rc1-next-20150303+#8
Workqueue: deferwq deferred_probe_work_func
Stack Trace:
arc_unwind_core+0xb8/0x114
warn_slowpath_common+0x5a/0x8c
warn_slowpath_fmt+0x2e/0x38
sysfs_warn_dup+0x4e/0x68
sysfs_create_dir_ns+0x98/0xa0
kobject_add_internal+0x8c/0x2e8
kobject_add+0x4a/0x8c
device_add+0xc6/0x448
mdiobus_register+0x6c/0x164
stmmac_mdio_register+0x112/0x264
stmmac_dvr_probe+0x6c0/0x85c
stmmac_pltfr_probe+0x2e4/0x50c
platform_drv_probe+0x26/0x5c
really_probe+0x76/0x1dc
bus_for_each_drv+0x42/0x7c
device_attach+0x64/0x6c
bus_probe_device+0x74/0xa4
deferred_probe_work_func+0x50/0x84
process_one_work+0xf8/0x2cc
worker_thread+0x110/0x478
kthread+0x8a/0x9c
ret_from_fork+0x14/0x18
---[ end trace a2dfaa7d630c8be1 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6 at lib/kobject.c:240
kobject_add_internal+0x218/0x2e8()
kobject_add_internal failed for stmmac-0 with -EEXIST, don't try to
register things with the same name in the same di.
CPU: 0 PID: 6 Comm: kworker/u2:0 Tainted: G W
4.0.0-rc1-next-20150303+ #8
Workqueue: deferwq deferred_probe_work_func
Stack Trace:
arc_unwind_core+0xb8/0x114
warn_slowpath_common+0x5a/0x8c
warn_slowpath_fmt+0x2e/0x38
kobject_add_internal+0x218/0x2e8
kobject_add+0x4a/0x8c
device_add+0xc6/0x448
mdiobus_register+0x6c/0x164
stmmac_mdio_register+0x112/0x264
stmmac_dvr_probe+0x6c0/0x85c
stmmac_pltfr_probe+0x2e4/0x50c
platform_drv_probe+0x26/0x5c
really_probe+0x76/0x1dc
bus_for_each_drv+0x42/0x7c
device_attach+0x64/0x6c
bus_probe_device+0x74/0xa4
deferred_probe_work_func+0x50/0x84
process_one_work+0xf8/0x2cc
worker_thread+0x110/0x478
kthread+0x8a/0x9c
ret_from_fork+0x14/0x18
---[ end trace a2dfaa7d630c8be2 ]---
libphy: mii_bus stmmac-0 failed to register
: Cannot register as MDIO bus
stmmac_pltfr_probe: main driver probe failed
stmmaceth: probe of e0018000.ethernet failed with error -22
--->8---
Essential fix is to check for IRQs availability as early as possible and
then safely go to deferred probe if IRQs are not there yet.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Sonic Zhang <sonic.zhang@analog.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
- minor timeout & other fixes on reservation/fence
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Merge tag 'dma-buf-for-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf
Pull dma-buf fixes from Sumit Semwal:
"Minor timeout & other fixes on reservation/fence"
* tag 'dma-buf-for-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf:
reservation: Remove shadowing local variable 'ret'
dma-buf/fence: don't wait when specified timeout is zero
reservation: wait only with non-zero timeout specified (v3)
- Fix for dynticks.
- Fix for smpboot bug.
- Fix for IOMMU group refcounting.
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Merge tag 'powerpc-4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc fixes from Michael Ellerman:
- Fix for dynticks.
- Fix for smpboot bug.
- Fix for IOMMU group refcounting.
* tag 'powerpc-4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
powerpc/iommu: Remove IOMMU device references via bus notifier
powerpc/smp: Wait until secondaries are active & online
powerpc: Re-enable dynticks
After d905c5df9a ("PPC: POWERNV: move iommu_add_device earlier"), the
refcnt on the kobject backing the IOMMU group for a PCI device is
elevated by each call to pci_dma_dev_setup_pSeriesLP() (via
set_iommu_table_base_and_group). When we go to dlpar a multi-function
PCI device out:
iommu_reconfig_notifier ->
iommu_free_table ->
iommu_group_put
BUG_ON(tbl->it_group)
We trip this BUG_ON, because there are still references on the table, so
it is not freed. Fix this by moving the powernv bus notifier to common
code and calling it for both powernv and pseries.
Fixes: d905c5df9a ("PPC: POWERNV: move iommu_add_device earlier")
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Tested-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Anton has a busy ppc64le KVM box where guests sometimes hit the infamous
"kernel BUG at kernel/smpboot.c:134!" issue during boot:
BUG_ON(td->cpu != smp_processor_id());
Basically a per CPU hotplug thread scheduled on the wrong CPU. The oops
output confirms it:
CPU: 0
Comm: watchdog/130
The problem is that we aren't ensuring the CPU active bit is set for the
secondary before allowing the master to continue on. The master unparks
the secondary CPU's kthreads and the scheduler looks for a CPU to run
on. It calls select_task_rq() and realises the suggested CPU is not in
the cpus_allowed mask. It then ends up in select_fallback_rq(), and
since the active bit isnt't set we choose some other CPU to run on.
This seems to have been introduced by 6acbfb9697 "sched: Fix hotplug
vs. set_cpus_allowed_ptr()", which changed from setting active before
online to setting active after online. However that was in turn fixing a
bug where other code assumed an active CPU was also online, so we can't
just revert that fix.
The simplest fix is just to spin waiting for both active & online to be
set. We already have a barrier prior to set_cpu_online() (which also
sets active), to ensure all other setup is completed before online &
active are set.
Fixes: 6acbfb9697 ("sched: Fix hotplug vs. set_cpus_allowed_ptr()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Pull nfsd fixes from Bruce Fields:
"Three miscellaneous bugfixes, most importantly the clp->cl_revoked
bug, which we've seen several reports of people hitting"
* 'for-4.0' of git://linux-nfs.org/~bfields/linux:
sunrpc: integer underflow in rsc_parse()
nfsd: fix clp->cl_revoked list deletion causing softlock in nfsd
svcrpc: fix memory leak in gssp_accept_sec_context_upcall
Pull networking fixes from David Miller:
1) If an IPVS tunnel is created with a mixed-family destination
address, it cannot be removed. Fix from Alexey Andriyanov.
2) Fix module refcount underflow in netfilter's nft_compat, from Pablo
Neira Ayuso.
3) Generic statistics infrastructure can reference variables sitting on
a released function stack, therefore use dynamic allocation always.
Fix from Ignacy Gawędzki.
4) skb_copy_bits() return value test is inverted in ip_check_defrag().
5) Fix network namespace exit in openvswitch, we have to release all of
the per-net vports. From Pravin B Shelar.
6) Fix signedness bug in CAIF's cfpkt_iterate(), from Dan Carpenter.
7) Fix rhashtable grow/shrink behavior, only expand during inserts and
shrink during deletes. From Daniel Borkmann.
8) Netdevice names with semicolons should never be allowed, because
they serve as a separator. From Matthew Thode.
9) Use {,__}set_current_state() where appropriate, from Fabian
Frederick.
10) Revert byte queue limits support in r8169 driver, it's causing
regressions we can't figure out.
11) tcp_should_expand_sndbuf() erroneously uses tp->packets_out to
measure packets in flight, properly use tcp_packets_in_flight()
instead. From Neal Cardwell.
12) Fix accidental removal of support for bluetooth in CSR based Intel
wireless cards. From Marcel Holtmann.
13) We accidently added a behavioral change between native and compat
tasks, wrt testing the MSG_CMSG_COMPAT bit. Just ignore it if the
user happened to set it in a native binary as that was always the
behavior we had. From Catalin Marinas.
14) Check genlmsg_unicast() return valud in hwsim netlink tx frame
handling, from Bob Copeland.
15) Fix stale ->radar_required setting in mac80211 that can prevent
starting new scans, from Eliad Peller.
16) Fix memory leak in nl80211 monitor, from Johannes Berg.
17) Fix race in TX index handling in xen-netback, from David Vrabel.
18) Don't enable interrupts in amx-xgbe driver until all software et al.
state is ready for the interrupt handler to run. From Thomas
Lendacky.
19) Add missing netlink_ns_capable() checks to rtnl_newlink(), from Eric
W Biederman.
20) The amount of header space needed in macvtap was not calculated
properly, fix it otherwise we splat past the beginning of the
packet. From Eric Dumazet.
21) Fix bcmgenet TCP TX perf regression, from Jaedon Shin.
22) Don't raw initialize or mod timers, use setup_timer() and
mod_timer() instead. From Vaishali Thakkar.
23) Fix software maintained statistics in bcmgenet and systemport
drivers, from Florian Fainelli.
24) DMA descriptor updates in sh_eth need proper memory barriers, from
Ben Hutchings.
25) Don't do UDP Fragmentation Offload on RAW sockets, from Michal
Kubecek.
26) Openvswitch's non-masked set actions aren't constructed properly
into netlink messages, fix from Joe Stringer.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
openvswitch: Fix serialization of non-masked set actions.
gianfar: Reduce logging noise seen due to phy polling if link is down
ibmveth: Add function to enable live MAC address changes
net: bridge: add compile-time assert for cb struct size
udp: only allow UFO for packets from SOCK_DGRAM sockets
sh_eth: Really fix padding of short frames on TX
Revert "sh_eth: Enable Rx descriptor word 0 shift for r8a7790"
sh_eth: Fix RX recovery on R-Car in case of RX ring underrun
sh_eth: Ensure proper ordering of descriptor active bit write/read
net/mlx4_en: Disbale GRO for incoming loopback/selftest packets
net/mlx4_core: Fix wrong mask and error flow for the update-qp command
net: systemport: fix software maintained statistics
net: bcmgenet: fix software maintained statistics
rxrpc: don't multiply with HZ twice
rxrpc: terminate retrans loop when sending of skb fails
net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface.
net: pasemi: Use setup_timer and mod_timer
net: stmmac: Use setup_timer and mod_timer
net: 8390: axnet_cs: Use setup_timer and mod_timer
net: 8390: pcnet_cs: Use setup_timer and mod_timer
...
Set actions consist of a regular OVS_KEY_ATTR_* attribute nested inside
of a OVS_ACTION_ATTR_SET action attribute. When converting masked actions
back to regular set actions, the inner attribute length was not changed,
ie, double the length being serialized. This patch fixes the bug.
Fixes: 83d2b9b ("net: openvswitch: Support masked set actions.")
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 6ce29b0e2a ("gianfar: Avoid unnecessary reg accesses in adjust_link()")
eliminates unnecessary calls to adjust_link for phy devices which don't support
interrupts and need polling. As part of that work, the 'new_state' local flag,
which was used to reduce logging noise on the console, was eliminated.
Unfortunately, that means that a 'Link is Down' log message will now be
issued continuously if a link is configured as UP, the link state is down,
and the associated phy requires polling. This occurs because priv->oldduplex
is -1 in this case, which always differs from phydev->duplex. In addition,
phydev->speed may also differ from priv->oldspeed. gfar_update_link_state()
is therefore called each time a phy is polled, even if the link state did not
change.
Cc: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a function that will enable changing the MAC address
of an ibmveth interface while it is still running.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
make build fail if structure no longer fits into ->cb storage.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is a tricky story of the new atomic state handling and the legacy
code fighting over each another. The bug at hand is an underrun of the
framebuffer reference with subsequent hilarity caused by the load
detect code. Which is peculiar since the the exact same code works
fine as the implementation of the legacy setcrtc ioctl.
Let's look at the ingredients:
- Currently our code is a crazy mix of legacy modeset interfaces to
set the parameters and half-baked atomic state tracking underneath.
While this transition is going we're using the transitional plane
helpers to update the atomic side (drm_plane_helper_disable/update
and friends), i.e. plane->state->fb. Since the state structure owns
the fb those functions take care of that themselves.
The legacy state (specifically crtc->primary->fb) is still managed
by the old code (and mostly by the drm core), with the fb reference
counting done by callers (core drm for the ioctl or the i915 load
detect code). The relevant commit is
commit ea2c67bb4a
Author: Matt Roper <matthew.d.roper@intel.com>
Date: Tue Dec 23 10:41:52 2014 -0800
drm/i915: Move to atomic plane helpers (v9)
- drm_plane_helper_disable has special code to handle multiple calls
in a row - it checks plane->crtc == NULL and bails out. This is to
match the proper atomic implementation which needs the crtc to get
at the implied locking context atomic updates always need. See
commit acf24a395c
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue Jul 29 15:33:05 2014 +0200
drm/plane-helper: transitional atomic plane helpers
- The universal plane code split out the implicit primary plane from
the CRTC into it's own full-blown drm_plane object. As part of that
the setcrtc ioctl (which updated both the crtc mode and primary
plane) learned to set crtc->primary->crtc on modeset to make sure
the plane->crtc assignments statate up to date in
commit e13161af80
Author: Matt Roper <matthew.d.roper@intel.com>
Date: Tue Apr 1 15:22:38 2014 -0700
drm: Add drm_crtc_init_with_planes() (v2)
Unfortunately we've forgotten to update the load detect code. Which
wasn't a problem since the load detect modeset is temporary and
always undone before we drop the locks.
- Finally there is a organically grown history (i.e. don't ask) around
who sets the legacy plane->fb for the various driver entry points.
Originally updating that was the drivers duty, but for almost all
places we've moved that (plus updating the refcounts) into the core.
Again the exception is the load detect code.
Taking all together the following happens:
- The load detect code doesn't set crtc->primary->crtc. This is only
really an issue on crtcs never before used or when userspace
explicitly disabled the primary plane.
- The plane helper glue code short-circuits because of that and leaves
a non-NULL fb behind in plane->state->fb and plane->fb. The state
fb isn't a real problem (it's properly refcounted on its own), it's
just the canary.
- Load detect code drops the reference for that fb, but doesn't set
plane->fb = NULL. This is ok since it's still living in that old
world where drivers had to clear the pointer but the core/callers
handled the refcounting.
- On the next modeset the drm core notices plane->fb and takes care of
refcounting it properly by doing another unref. This drops the
refcount to zero, leaving state->plane now pointing at freed memory.
- intel_plane_duplicate_state still assume it owns a reference to that
very state->fb and bad things start to happen.
Fix this all by applying the same duct-tape as for the legacy setcrtc
ioctl code and set crtc->primary->crtc properly.
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Paulo Zanoni <przanoni@gmail.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If an over-MTU UDP datagram is sent through a SOCK_RAW socket to a
UFO-capable device, ip_ufo_append_data() sets skb->ip_summed to
CHECKSUM_PARTIAL unconditionally as all GSO code assumes transport layer
checksum is to be computed on segmentation. However, in this case,
skb->csum_start and skb->csum_offset are never set as raw socket
transmit path bypasses udp_send_skb() where they are usually set. As a
result, driver may access invalid memory when trying to calculate the
checksum and store the result (as observed in virtio_net driver).
Moreover, the very idea of modifying the userspace provided UDP header
is IMHO against raw socket semantics (I wasn't able to find a document
clearly stating this or the opposite, though). And while allowing
CHECKSUM_NONE in the UFO case would be more efficient, it would be a bit
too intrusive change just to handle a corner case like this. Therefore
disallowing UFO for packets from SOCK_DGRAM seems to be the best option.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings says:
====================
Fixes for sh_eth #4 v2
I'm continuing review and testing of Ethernet support on the R-Car H2
chip, with help from a colleague. This series fixes a few more issues.
These are not tested on any of the other supported chips.
v2: Add note that the revert is not a pure revert.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
My previous fix to clear padding of short frames used skb->len as the
DMA length, assuming that skb_padto() extended skb->len to include the
padding. That isn't the case; we need to use skb_put_padto() instead.
(This wasn't immediately obvious because software padding isn't
actually needed on the R-Car H2. We could make it conditional on
which chip is being driven, but it's probably not worth the effort.)
Reported-by: "Violeta Menéndez González" <violeta.menendez@codethink.co.uk>
Fixes: 612a17a54b50 ("sh_eth: Fix padding of short frames on TX")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit fd9af07c34.
The hardware manual states that the frame error and multicast bits are
copied to bits 9:0 of RD0, not bits 25:16. I've tested that this is
true for RFS1 (CRC error), RFS3 (frame too short), RFS4 (frame too
long) and RFS8 (multicast).
Also adjust a comment to agree with this.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of RX ring underrun (RDE), we attempt to reset the software
descriptor pointers (dirty_rx and cur_rx) to match where the hardware
will read the next descriptor from, as that might not be the first
dirty descriptor. This relies on reading RDFAR, but that register
doesn't exist on all supported chips - specifically, not on the R-Car
chips. This will result in unpredictable behaviour on those chips
after an RDE.
Make this pointer reset conditional and assume that it isn't needed on
the R-Car chips. This fix also assumes that RDFAR is never exposed at
offset 0 in the memory map - this is currently true, and a subsequent
commit will fix the ambiguity between offset 0 and no-offset in the
register offset maps.
Fixes: 79fba9f517 ("net: sh_eth: fix the rxdesc pointer when rx ...")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
When submitting a DMA descriptor, the active bit must be written last.
When reading a completed DMA descriptor, the active bit must be read
first.
Add memory barriers to ensure that this ordering is maintained.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable disabled interrupt, on unsuccessful operation.
Found by Coccinelle.
Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Currently the guest exit trace event saves the VCPU pointer to the
structure, and the guest PC is retrieved by dereferencing it when the
event is printed rather than directly from the trace record. This isn't
safe as the printing may occur long afterwards, after the PC has changed
and potentially after the VCPU has been freed. Usually this results in
the same (wrong) PC being printed for multiple trace events. It also
isn't portable as userland has no way to access the VCPU data structure
when interpreting the trace record itself.
Lets save the actual PC in the structure so that the correct value is
accessible later.
Fixes: 669e846e6c ("KVM/MIPS32: MIPS arch specific APIs for KVM")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.10+
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
- Fix a translation problem in of_get_named_gpiod_flags()
- Fix a long standing container_of() mistake in the TPS65912
driver.
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Merge tag 'gpio-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Two GPIO fixes:
- Fix a translation problem in of_get_named_gpiod_flags()
- Fix a long standing container_of() mistake in the TPS65912 driver"
* tag 'gpio-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: tps65912: fix wrong container_of arguments
gpiolib: of: allow of_gpiochip_find_and_xlate to find more than one chip per node
Pull thermal management fixes from Eduardo Valentin:
"Specifics:
- Several fixes in tmon tool.
- Fixes in intel int340x for _ART and _TRT tables.
- Add id for Avoton SoC into powerclamp driver.
- Fixes in RCAR thermal driver to remove race conditions and fix fail
path
- Fixes in TI thermal driver: removal of unnecessary code and build
fix if !CONFIG_PM_SLEEP
- Cleanups in exynos thermal driver
- Add stubs for include/linux/thermal.h. Now drivers using thermal
calls but that also work without CONFIG_THERMAL will be able to
compile for systems that don't care about thermal.
Note: I am sending this pull on Rui's behalf while he fixes issues in
his Linux box"
* 'fixes-for-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal:
thermal: int340x_thermal: Ignore missing _ART, _TRT tables
thermal/intel_powerclamp: add id for Avoton SoC
tools/thermal: tmon: silence 'set but not used' warnings
tools/thermal: tmon: use pkg-config to determine library dependencies
tools/thermal: tmon: support cross-compiling
tools/thermal: tmon: add .gitignore
tools/thermal: tmon: fixup tui windowing calculations
tools/thermal: tmon: tui: don't hard-code dialog window size assumptions
tools/thermal: tmon: add min/max macros
tools/thermal: tmon: add --target-temp parameter
thermal: exynos: Clean-up code to use oneline entry for exynos compatible table
thermal: rcar: Make error and remove paths symmetrical with init
thermal: rcar: Fix race condition between init and interrupt
thermal: Introduce dummy functions when thermal is not defined
ti-soc-thermal: Delete an unnecessary check before the function call "cpufreq_cooling_unregister"
thermal: ti-soc-thermal: bandgap: Fix build warning if !CONFIG_PM_SLEEP
In commit b4eef9b36d, we started to use hwapic_isr_update() != NULL
instead of kvm_apic_vid_enabled(vcpu->kvm). This didn't work because
SVM had it defined and "apicv" path in apic_{set,clear}_isr() does not
change apic->isr_count, because it should always be 1. The initial
value of apic->isr_count was based on kvm_apic_vid_enabled(vcpu->kvm),
which is always 0 for SVM, so KVM could have injected interrupts when it
shouldn't.
Fix it by implicitly setting SVM's hwapic_isr_update to NULL and make the
initial isr_count depend on hwapic_isr_update() for good measure.
Fixes: b4eef9b36d ("kvm: x86: vmx: NULL out hwapic_isr_update() in case of !enable_apicv")
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
- fix a read-balance problem that was reported 2 years ago, but
that I never noticed the report :-(
- fix for rare RAID6 problem causing incorrect bitmap updates when
two devices fail.
- add __ATTR_PREALLOC annotation now that it is possible.
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Merge tag 'md/4.0-fixes' of git://neil.brown.name/md
Pull md fixes from Neil Brown:
"Three md fixes:
- fix a read-balance problem that was reported 2 years ago, but that
I never noticed the report :-(
- fix for rare RAID6 problem causing incorrect bitmap updates when
two devices fail.
- add __ATTR_PREALLOC annotation now that it is possible"
* tag 'md/4.0-fixes' of git://neil.brown.name/md:
md: mark some attributes as pre-alloc
raid5: check faulty flag for array status during recovery.
md/raid1: fix read balance when a drive is write-mostly.
This is just a single patch to fix the KSTK_EIP() and KSTK_ESP() macros
for metag which have always been erronously returning the PC and stack
pointer of the task's kernel context rather than from its user context
saved at entry from userland into the kernel, which affects the contents
of /proc/<pid>/maps and /proc/<pid>/stat.
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Merge tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull arch/metag fix from James Hogan:
"This is just a single patch to fix the KSTK_EIP() and KSTK_ESP()
macros for metag which have always been erronously returning the PC
and stack pointer of the task's kernel context rather than from its
user context saved at entry from userland into the kernel, which
affects the contents of /proc/<pid>/maps and /proc/<pid>/stat"
* tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Fix KSTK_EIP() and KSTK_ESP() macros
Or Gerlitz says:
====================
Mellanox driver fixes
Two small fixes, please apply to net.
Both patches should go to 3.19.y too.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Packets which are sent from the selftest (ethtool) flow,
should not be passed to GRO stack but rather dropped by
the driver after validation. To achieve that, we disable
GRO for the duration of the selftest.
Fixes: dd65beac48 ("net/mlx4_en: Extend usage of napi_gro_frags")
Reported-by: Carol Soto <clsoto@linux.vnet.ibm.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bit mask for currently supported driver features (MLX4_UPDATE_QP_SUPPORTED_ATTRS)
of the update-qp command was defined twice (using enum value and pre-processor
define directive) and wrong.
The return value of the call to mlx4_update_qp() from within the SRIOV
resource-tracker was wrongly voided down.
Fix both issues.
issue: none
Fixes: 09e05c3f78 ('net/mlx4: Set vlan stripping policy by the right command')
Fixes: ce8d9e0d67 ('net/mlx4_core: Add UPDATE_QP SRIOV wrapper support')
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull x86 fixes from Ingo Molnar:
"A CR4-shadow 32-bit init fix, plus two typo fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
x86/platform/intel-mid: Fix trivial printk message typo in intel_mid_arch_setup()
x86/cpu/intel: Fix trivial typo in intel_tlb_table[]
Pull perf fixes from Ingo Molnar:
"Two kprobes fixes and a handful of tooling fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Make sparc64 arch point to sparc
perf symbols: Define EM_AARCH64 for older OSes
perf top: Fix SIGBUS on sparc64
perf tools: Fix probing for PERF_FLAG_FD_CLOEXEC flag
perf tools: Fix pthread_attr_setaffinity_np build error
perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check
perf bench: Fix order of arguments to memcpy_alloc_mem
kprobes/x86: Check for invalid ftrace location in __recover_probed_insn()
kprobes/x86: Use 5-byte NOP when the code might be modified by ftrace
Pull locking fix from Ingo Molnar:
"An rtmutex deadlock path fixlet"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rtmutex: Set state back to running on error
Florian Fainelli says:
====================
net: bcmgenet and systemport statistics fixes
This two patches fix a similar problem in the GENET and SYSTEMPORT drivers
for software maintained statistics used to track DMA mapping and SKB
re-allocation failures.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 60b4ea1781 ("net: systemport: log RX buffer allocation and RX/TX DMA
failures") added a few software maintained statistics using
BCM_SYSPORT_STAT_MIB_RX and BCM_SYSPORT_STAT_MIB_TX. These statistics are read
from the hardware MIB counters, such that bcm_sysport_update_mib_counters() was
trying to read from a non-existing MIB offset for these counters.
Fix this by introducing a special type: BCM_SYSPORT_STAT_SOFT, similar to
BCM_SYSPORT_STAT_NETDEV, such that bcm_sysport_get_ethtool_stats will read from
the software mib.
Fixes: 60b4ea1781 ("net: systemport: log RX buffer allocation and RX/TX DMA failures")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 44c8bc3ce3 ("net: bcmgenet: log RX buffer allocation and RX/TX dma
failures") added a few software maintained statistics using
BCMGENET_STAT_MIB_RX and BCMGENET_STAT_MIB_TX. These statistics are read from
the hardware MIB counters, such that bcmgenet_update_mib_counters() was trying
to read from a non-existing MIB offset for these counters.
Fix this by introducing a special type: BCMGENET_STAT_SOFT, similar to
BCMGENET_STAT_NETDEV, such that bcmgenet_get_ethtool_stats will read from the
software mib.
Fixes: 44c8bc3ce3 ("net: bcmgenet: log RX buffer allocation and RX/TX dma failures")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rxrpc_resend_timeout has an initial value of 4 * HZ; use it as-is.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Typo, 'stop' is never set to true.
Seems intent is to not attempt to retransmit more packets after sendmsg
returns an error.
This change is based on code inspection only.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
To repeat:
$ sudo ip link del hsr0
BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
IP: [<ffffffff8187f495>] hsr_del_port+0x15/0xa0
etc...
Bug description:
As part of the hsr master device destruction, hsr_del_port() is called for each of
the hsr ports. At each such call, the master device is updated regarding features
and mtu. When the master device is freed before the slave interfaces, master will
be NULL in hsr_del_port(), which led to a NULL pointer dereference.
Additionally, dev_put() was called on the master device itself in hsr_del_port(),
causing a refcnt error.
A third bug in the same code path was that the rtnl lock was not taken before
hsr_del_port() was called as part of hsr_dev_destroy().
The reporter (Nicolas Dichtel) also said: "hsr_netdev_notify() supposes that the
port will always be available when the notification is for an hsr interface. It's
wrong. For example, netdev_wait_allrefs() may resend NETDEV_UNREGISTER.". As a
precaution against this, a check for port == NULL was added in hsr_dev_notify().
Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Fixes: 51f3c60531 ("net/hsr: Move slave init to hsr_slave.c.")
Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use timer API functions setup_timer and mod_timer instead
of structure assignments as they are standard way to set
the timer and to update the expire field of an active timer
respectively.
This is done using Coccinelle and semantic patch used for
this is as follows:
// <smpl>
@@
expression x,y,z,a,b;
@@
-init_timer (&x);
+setup_timer (&x, y, z);
+mod_timer (&a, b);
-x.function = y;
-x.data = z;
-x.expires = b;
-add_timer(&a);
// </smpl>
Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko