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Vlad Yasevich says:
====================
Fix lockdep issues with stacked devices
Recent commit dc8eaaa006350d24030502a4521542e74b5cb39f
vlan: Fix lockdep warning when vlan dev handle notification
attempted to solve lockdep issues with vlans where multiple
vlans were stacked. However, the code does not work correctly
when the vlan stack is interspersed with other devices in between
the vlans. Additionally, similar lockdep issues show up with other
devices.
This series provides a generic way to solve these issue for any
devices that can be stacked. It also addresses the concern for
vlan and macvlan devices. I am not sure whether it makes sense
to do so for other types like team, vxlan, and bond.
Thanks
-vlad
Since v2:
- Remove rcu variants from patch1, since that function is called
only under rtnl.
- Fix whitespace problems reported by checkpatch
Since v1:
- Fixed up a goofed-up rebase.
* is_vlan_dev() should be bool and that change belongs in patch3.
* patch4 should not have any vlan changes in it.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Macvlan devices try to avoid stacking, but that's not always
successfull or even desired. As an example, the following
configuration is perefectly legal and valid:
eth0 <--- macvlan0 <---- vlan0.10 <--- macvlan1
However, this configuration produces the following lockdep
trace:
[ 115.620418] ======================================================
[ 115.620477] [ INFO: possible circular locking dependency detected ]
[ 115.620516] 3.15.0-rc1+ #24 Not tainted
[ 115.620540] -------------------------------------------------------
[ 115.620577] ip/1704 is trying to acquire lock:
[ 115.620604] (&vlan_netdev_addr_lock_key/1){+.....}, at: [<ffffffff815df49c>] dev_uc_sync+0x3c/0x80
[ 115.620686]
but task is already holding lock:
[ 115.620723] (&macvlan_netdev_addr_lock_key){+.....}, at: [<ffffffff815da5be>] dev_set_rx_mode+0x1e/0x40
[ 115.620795]
which lock already depends on the new lock.
[ 115.620853]
the existing dependency chain (in reverse order) is:
[ 115.620894]
-> #1 (&macvlan_netdev_addr_lock_key){+.....}:
[ 115.620935] [<ffffffff810d57f2>] lock_acquire+0xa2/0x130
[ 115.620974] [<ffffffff816f62e7>] _raw_spin_lock_nested+0x37/0x50
[ 115.621019] [<ffffffffa07296c3>] vlan_dev_set_rx_mode+0x53/0x110 [8021q]
[ 115.621066] [<ffffffff815da557>] __dev_set_rx_mode+0x57/0xa0
[ 115.621105] [<ffffffff815da5c6>] dev_set_rx_mode+0x26/0x40
[ 115.621143] [<ffffffff815da6be>] __dev_open+0xde/0x140
[ 115.621174] [<ffffffff815da9ad>] __dev_change_flags+0x9d/0x170
[ 115.621174] [<ffffffff815daaa9>] dev_change_flags+0x29/0x60
[ 115.621174] [<ffffffff815e7f11>] do_setlink+0x321/0x9a0
[ 115.621174] [<ffffffff815ea59f>] rtnl_newlink+0x51f/0x730
[ 115.621174] [<ffffffff815e6e75>] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [<ffffffff81608b19>] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [<ffffffff815e6dca>] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [<ffffffff81608150>] netlink_unicast+0xf0/0x1c0
[ 115.621174] [<ffffffff8160851f>] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [<ffffffff815bc9db>] sock_sendmsg+0x8b/0xc0
[ 115.621174] [<ffffffff815bd4b9>] ___sys_sendmsg+0x369/0x380
[ 115.621174] [<ffffffff815bdbb2>] __sys_sendmsg+0x42/0x80
[ 115.621174] [<ffffffff815bdc02>] SyS_sendmsg+0x12/0x20
[ 115.621174] [<ffffffff816ffd69>] system_call_fastpath+0x16/0x1b
[ 115.621174]
-> #0 (&vlan_netdev_addr_lock_key/1){+.....}:
[ 115.621174] [<ffffffff810d4d43>] __lock_acquire+0x1773/0x1a60
[ 115.621174] [<ffffffff810d57f2>] lock_acquire+0xa2/0x130
[ 115.621174] [<ffffffff816f62e7>] _raw_spin_lock_nested+0x37/0x50
[ 115.621174] [<ffffffff815df49c>] dev_uc_sync+0x3c/0x80
[ 115.621174] [<ffffffffa0696d2a>] macvlan_set_mac_lists+0xca/0x110 [macvlan]
[ 115.621174] [<ffffffff815da557>] __dev_set_rx_mode+0x57/0xa0
[ 115.621174] [<ffffffff815da5c6>] dev_set_rx_mode+0x26/0x40
[ 115.621174] [<ffffffff815da6be>] __dev_open+0xde/0x140
[ 115.621174] [<ffffffff815da9ad>] __dev_change_flags+0x9d/0x170
[ 115.621174] [<ffffffff815daaa9>] dev_change_flags+0x29/0x60
[ 115.621174] [<ffffffff815e7f11>] do_setlink+0x321/0x9a0
[ 115.621174] [<ffffffff815ea59f>] rtnl_newlink+0x51f/0x730
[ 115.621174] [<ffffffff815e6e75>] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [<ffffffff81608b19>] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [<ffffffff815e6dca>] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [<ffffffff81608150>] netlink_unicast+0xf0/0x1c0
[ 115.621174] [<ffffffff8160851f>] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [<ffffffff815bc9db>] sock_sendmsg+0x8b/0xc0
[ 115.621174] [<ffffffff815bd4b9>] ___sys_sendmsg+0x369/0x380
[ 115.621174] [<ffffffff815bdbb2>] __sys_sendmsg+0x42/0x80
[ 115.621174] [<ffffffff815bdc02>] SyS_sendmsg+0x12/0x20
[ 115.621174] [<ffffffff816ffd69>] system_call_fastpath+0x16/0x1b
[ 115.621174]
other info that might help us debug this:
[ 115.621174] Possible unsafe locking scenario:
[ 115.621174] CPU0 CPU1
[ 115.621174] ---- ----
[ 115.621174] lock(&macvlan_netdev_addr_lock_key);
[ 115.621174] lock(&vlan_netdev_addr_lock_key/1);
[ 115.621174] lock(&macvlan_netdev_addr_lock_key);
[ 115.621174] lock(&vlan_netdev_addr_lock_key/1);
[ 115.621174]
*** DEADLOCK ***
[ 115.621174] 2 locks held by ip/1704:
[ 115.621174] #0: (rtnl_mutex){+.+.+.}, at: [<ffffffff815e6dbb>] rtnetlink_rcv+0x1b/0x40
[ 115.621174] #1: (&macvlan_netdev_addr_lock_key){+.....}, at: [<ffffffff815da5be>] dev_set_rx_mode+0x1e/0x40
[ 115.621174]
stack backtrace:
[ 115.621174] CPU: 3 PID: 1704 Comm: ip Not tainted 3.15.0-rc1+ #24
[ 115.621174] Hardware name: Hewlett-Packard HP xw8400 Workstation/0A08h, BIOS 786D5 v02.38 10/25/2010
[ 115.621174] ffffffff82339ae0 ffff880465f79568 ffffffff816ee20c ffffffff82339ae0
[ 115.621174] ffff880465f795a8 ffffffff816e9e1b ffff880465f79600 ffff880465b019c8
[ 115.621174] 0000000000000001 0000000000000002 ffff880465b019c8 ffff880465b01230
[ 115.621174] Call Trace:
[ 115.621174] [<ffffffff816ee20c>] dump_stack+0x4d/0x66
[ 115.621174] [<ffffffff816e9e1b>] print_circular_bug+0x200/0x20e
[ 115.621174] [<ffffffff810d4d43>] __lock_acquire+0x1773/0x1a60
[ 115.621174] [<ffffffff810d3172>] ? trace_hardirqs_on_caller+0xb2/0x1d0
[ 115.621174] [<ffffffff810d57f2>] lock_acquire+0xa2/0x130
[ 115.621174] [<ffffffff815df49c>] ? dev_uc_sync+0x3c/0x80
[ 115.621174] [<ffffffff816f62e7>] _raw_spin_lock_nested+0x37/0x50
[ 115.621174] [<ffffffff815df49c>] ? dev_uc_sync+0x3c/0x80
[ 115.621174] [<ffffffff815df49c>] dev_uc_sync+0x3c/0x80
[ 115.621174] [<ffffffffa0696d2a>] macvlan_set_mac_lists+0xca/0x110 [macvlan]
[ 115.621174] [<ffffffff815da557>] __dev_set_rx_mode+0x57/0xa0
[ 115.621174] [<ffffffff815da5c6>] dev_set_rx_mode+0x26/0x40
[ 115.621174] [<ffffffff815da6be>] __dev_open+0xde/0x140
[ 115.621174] [<ffffffff815da9ad>] __dev_change_flags+0x9d/0x170
[ 115.621174] [<ffffffff815daaa9>] dev_change_flags+0x29/0x60
[ 115.621174] [<ffffffff811e1db1>] ? mem_cgroup_bad_page_check+0x21/0x30
[ 115.621174] [<ffffffff815e7f11>] do_setlink+0x321/0x9a0
[ 115.621174] [<ffffffff810d394c>] ? __lock_acquire+0x37c/0x1a60
[ 115.621174] [<ffffffff815ea59f>] rtnl_newlink+0x51f/0x730
[ 115.621174] [<ffffffff815ea169>] ? rtnl_newlink+0xe9/0x730
[ 115.621174] [<ffffffff815e6e75>] rtnetlink_rcv_msg+0x95/0x250
[ 115.621174] [<ffffffff810d329d>] ? trace_hardirqs_on+0xd/0x10
[ 115.621174] [<ffffffff815e6dbb>] ? rtnetlink_rcv+0x1b/0x40
[ 115.621174] [<ffffffff815e6de0>] ? rtnetlink_rcv+0x40/0x40
[ 115.621174] [<ffffffff81608b19>] netlink_rcv_skb+0xa9/0xc0
[ 115.621174] [<ffffffff815e6dca>] rtnetlink_rcv+0x2a/0x40
[ 115.621174] [<ffffffff81608150>] netlink_unicast+0xf0/0x1c0
[ 115.621174] [<ffffffff8160851f>] netlink_sendmsg+0x2ff/0x740
[ 115.621174] [<ffffffff815bc9db>] sock_sendmsg+0x8b/0xc0
[ 115.621174] [<ffffffff8119d4af>] ? might_fault+0x5f/0xb0
[ 115.621174] [<ffffffff8119d4f8>] ? might_fault+0xa8/0xb0
[ 115.621174] [<ffffffff8119d4af>] ? might_fault+0x5f/0xb0
[ 115.621174] [<ffffffff815cb51e>] ? verify_iovec+0x5e/0xe0
[ 115.621174] [<ffffffff815bd4b9>] ___sys_sendmsg+0x369/0x380
[ 115.621174] [<ffffffff816faa0d>] ? __do_page_fault+0x11d/0x570
[ 115.621174] [<ffffffff810cfe9f>] ? up_read+0x1f/0x40
[ 115.621174] [<ffffffff816fab04>] ? __do_page_fault+0x214/0x570
[ 115.621174] [<ffffffff8120a10b>] ? mntput_no_expire+0x6b/0x1c0
[ 115.621174] [<ffffffff8120a0b7>] ? mntput_no_expire+0x17/0x1c0
[ 115.621174] [<ffffffff8120a284>] ? mntput+0x24/0x40
[ 115.621174] [<ffffffff815bdbb2>] __sys_sendmsg+0x42/0x80
[ 115.621174] [<ffffffff815bdc02>] SyS_sendmsg+0x12/0x20
[ 115.621174] [<ffffffff816ffd69>] system_call_fastpath+0x16/0x1b
Fix this by correctly providing macvlan lockdep class.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit dc8eaaa006350d24030502a4521542e74b5cb39f.
vlan: Fix lockdep warning when vlan dev handle notification
Instead we use the new new API to find the lock subclass of
our vlan device. This way we can support configurations where
vlans are interspersed with other devices:
bond -> vlan -> macvlan -> vlan
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently netif_addr_lock_nested assumes that there can be only
a single nesting level between 2 devices. However, if we
have multiple devices of the same type stacked, this fails.
For example:
eth0 <-- vlan0.10 <-- vlan0.10.20
A more complicated configuration may stack more then one type of
device in different order.
Ex:
eth0 <-- vlan0.10 <-- macvlan0 <-- vlan1.10.20 <-- macvlan1
This patch adds an ndo_* function that allows each stackable
device to report its nesting level. If the device doesn't
provide this function default subclass of 1 is used.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Multiple devices in the kernel can be stacked/nested and they
need to know their nesting level for the purposes of lockdep.
This patch provides a generic function that determines a nesting
level of a particular device by its type (ex: vlan, macvlan, etc).
We only care about nesting of the same type of devices.
For example:
eth0 <- vlan0.10 <- macvlan0 <- vlan1.20
The nesting level of vlan1.20 would be 1, since there is another vlan
in the stack under it.
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The value written to PLLE_AUX was incorrect due to a wrong variable
being used. Without this fix SATA does not work.
Cc: stable@vger.kernel.org
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Tested-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: improved changelog]
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wdev->ifdev should be set by .change_virtual_intf(). This solves the
problem of WARN() messages on module unload.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit 6ddeb6d84459 (dmaengine: omap-dma: move IRQ handling to omap-dma)
added support for handling interrupts in the omap dmaengine driver
instead of the legacy driver. Because of different handling for
interrupts this however caused omap3 to hang eventually after hitting
off-idle.
Any of the virtual 32 DMA channels can be assigned to any of the
four DMA interrupts. So commit 6ddeb6d84459 made the omap dmaengine
driver to use the second DMA interrupt while keeping the legacy code
still using the first DMA interrupt.
This means we need to save and restore both IRQENABLE_L1 in addition
to IRQENABLE_L0. As there is a chance that the DSP might be using
IRQENABLE_L2 or IRQENABLE_L3 lines, let's not touch those until
this has been confirmed. Let's just add a comment to the code for
now.
Fixes: 6ddeb6d84459 (dmaengine: omap-dma: move IRQ handling to omap-dma)
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Commit c66d039197e4 broke NAND for non-DT boot on all OMAP2 and OMAP3
boards using board_nand_init(). Following error is seen at boot
[ 0.154998] (null): Unsupported NAND ECC scheme selected
For OMAP2 and OMAP3 platforms, the ecc_opt parameter in platform data
must be set to OMAP_ECC_HAM1_CODE_HW to work properly.
Tested on omap3-beagle c4.
Fixes: c66d039197e4 (mtd: nand: omap: combine different flavours of 1-bit hamming ecc schemes)
Cc: stable@vger.kernel.org # v3.12+
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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* acpi-video:
ACPI / video: Revert native brightness quirk for ThinkPad T530
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git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.15/fixes-v3
Two small OMAP fixes for v3.15-rc. One fixes "slow motion" or
"choppy" audio playback on OMAP5. The other applies an OMAP3630 fix
for clock rate setting for camera to other OMAP3 chips.
Basic build, boot, and PM test results are available here:
http://www.pwsan.com/omap/testlogs/prcm-fixes-b-v3.15-rc/20140514112639/
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Starting from linux-3.13, GRO attempts to build full size skbs.
Problem is the commit assumed one particular field in skb->cb[]
was clean, but it is not the case on some stacked devices.
Timo reported a crash in case traffic is decrypted before
reaching a GRE device.
Fix this by initializing NAPI_GRO_CB(skb)->last at the right place,
this also removes one conditional.
Thanks a lot to Timo for providing full reports and bisecting this.
Fixes: 8a29111c7ca6 ("net: gro: allow to build full sized skb")
Bisected-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The connected check fails to check for ip_gre nbma mode tunnels
properly. ip_gre creates temporary tnl_params with daddr specified
to pass-in the actual target on per-packet basis from neighbor
layer. Detect these tunnels by inspecting the actual tunnel
configuration.
Minimal test case:
ip route add 192.168.1.1/32 via 10.0.0.1
ip route add 192.168.1.2/32 via 10.0.0.2
ip tunnel add nbma0 mode gre key 1 tos c0
ip addr add 172.17.0.0/16 dev nbma0
ip link set nbma0 up
ip neigh add 172.17.0.1 lladdr 192.168.1.1 dev nbma0
ip neigh add 172.17.0.2 lladdr 192.168.1.2 dev nbma0
ping 172.17.0.1
ping 172.17.0.2
The second ping should be going to 192.168.1.2 and head 10.0.0.2;
but cached gre tunnel level route is used and it's actually going
to 192.168.1.1 via 10.0.0.1.
The lladdr's need to go to separate dst for the bug to trigger.
Test case uses separate route entries, but this can also happen
when the route entry is same: if there is a nexthop exception or
the GRE tunnel is IPsec'ed in which case the dst points to xfrm
bundle unique to the gre lladdr.
Fixes: 7d442fab0a67 ("ipv4: Cache dst in tunnels")
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Cc: Tom Herbert <therbert@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding more than one chip on device-tree currently causes the probing
routine to always use the first chips data pointer.
Signed-off-by: Fabian Godehardt <fg@emlix.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, "ip -6 route get mark xyz" ignores the mark passed in
by userspace. Make it honour the mark, just like IPv4 does.
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Include changes:
- fix NULL dereference in batadv_orig_hardif_seq_print_text()
- fix reference counting imbalance when using fragmentation
- avoid access to orig_node objects after they have been free'd
- fix local TT check for outgoing arp requests in DAT
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When the NAPI budget was not all used, xenvif_poll() would call
napi_complete() /after/ enabling the interrupt. This resulted in a
race between the napi_complete() and the napi_schedule() in the
interrupt handler. The use of local_irq_save/restore() avoided by
race iff the handler is running on the same CPU but not if it was
running on a different CPU.
Fix this properly by calling napi_complete() before reenabling
interrupts (in the xenvif_napi_schedule_or_enable_irq() call).
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Seems it helps some users, but causes issues for other users:
https://bugzilla.redhat.com/show_bug.cgi?id=1089545
So lets drop it for now until we've figured out a better fix.
Fixes: 43d949024425 (ACPI / video: Add use_native_backlight quirks for more systems)
References: https://bugzilla.redhat.com/show_bug.cgi?id=1089545
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
pull request: wireless 2014-05-15
Please pull this batch of fixes for the 3.15 stream...
For the mac80211 bits, Johannes says:
"One fix is to get better VHT performance and the other fixes tracing
garbage or other potential issues with the interface name tracing."
And...
"This has a fix from Emmanuel for a problem I failed to fix - when
association is in progress then it needs to be cancelled while
suspending (I had fixed the same for authentication). Also included a
fix from myself for a userspace API problem that hit the iw tool and a
fix to the remain-on-channel framework."
For the iwlwifi bits, Emmanuel says:
"Alex fixes the scan by disabling the fragmented scan. David prevents
scan offload while associated, the firmware seems not to like it. I
fix a stupid bug I made in BT Coex, and fix a bad #ifdef clause in rate
scaling. Along with that there is a fix for a NULL pointer exception
that can happen if we load the driver and our ISR gets called because
the interrupt line is shared. The fix has been tested by the reporter."
And...
"We have here a fix from David Spinadel that makes a previous fix more
complete, and an off-by-one issue fixed by Eliad in the same area.
I fix the monitor that broke on the way."
Beyond that...
Daniel Kim's one-liner fixes a brcmfmac regression caused by a typo
in an earlier commit..
Rajkumar Manoharan fixes an ath9k oops reported by David Herrmann.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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There may be padding on the ticket contained in the key payload, so just ensure
that the claimed token length is large enough, rather than exactly the right
size.
Signed-off-by: Nathaniel Wesley Filardo <nwf@cs.jhu.edu>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With commit be9dad1f9f26604fb ("net: phy: suspend phydev when going
to HALTED"), an unused PHY device will be put in a low-power mode
using BMCR_PDOWN. Some Ethernet drivers might be calling phy_start()
and phy_stop() from ndo_open and ndo_close() respectively, while
calling phy_connect() and phy_disconnect() from probe and remove.
In such a case, the PHY will be powered down during the phy_stop()
call, but will fail to be powered up in phy_start().
This patch fixes this scenario.
Signed-off-by: Jiancheng Xue <xuejiancheng@huawei.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Or Gerlitz says:
====================
mlx4: Fix VF MAC address change under RoCE usage
This short series provides proper handling for the case where a
VF netdevice change their MAC address under a RoCE use case. The code
it deals with was introduced in 3.15-rc1
Prior to this series the source MAC used for the VM RoCE CM
packets remains as before the MAC modification. Hence RoCE CM
packets sent by the VF will not carry the same source MAC
address as the non-CM packets.
Earlier 3.15-rc commit f24f790 "net/mlx4_core: Load the Eth driver
first" handled just one instance of the problem, but this one
provides a more generic and proper solution which covers all
cases of VF mac change.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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When we receive a netdev event indicating a netdev change and/or
a netdev address change, we must change the MAC index used by the
proxy QP1 (in the QP context), otherwise RoCE CM packets sent by the
VF will not carry the same source MAC address as the non-CM packets.
We use the UPDATE_QP command to perform this change.
In order to avoid modifying a QP context based on netdev event,
while the driver attempts to destroy this QP (e.g either the mlx4_ib
or ib_mad modules are unloaded), we use mutex locking in both flows.
Since the relevant mlx4 proxy GSI QP is created indirectly by the
mad module when they create their GSI QP, the mlx4 didn't need to
keep track on that QP prior to this change.
Now, when QP modifications are needed to this QP from within the
driver, we added refernece to it.
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>
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This patch adds UPDATE_QP SRIOV wrapper support.
The mechanism is a general one, but currently only source MAC
index changes are allowed for VFs.
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>
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Use a correct pipe type when filling un interrupt urbs. This should
finally take care of the WARN() messages on the console when USB urbs
are submitted.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Commit e2b149cc4ba0 ("crush: add chooseleaf_vary_r tunable") added the
crush_map::chooseleaf_vary_r field but missed the decode part. This
lead to misdirected requests caused by incorrect raw crush mapping
sets.
Fixes: http://tracker.ceph.com/issues/8226
Reported-and-Tested-by: Dmitry Smirnov <onlyjob@member.fsf.org>
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
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It has been reported that using ZFSonLinux on rbd will result in memory
corruption. The bug report can be found here:
https://github.com/zfsonlinux/spl/issues/241
http://tracker.ceph.com/issues/7790
The reason is that ZFS will send pages with page_count 0 into rbd, which in
turns send them to tcp_sendpage. However, tcp_sendpage cannot deal with
page_count 0, as it will do get_page and put_page, and erroneously free the
page.
This type of issue has been noted before, and handled in iscsi, drbd,
etc. So, rbd should also handle this. This fix address this issue by fall back
to slower sendmsg when page_count 0 detected.
Cc: Sage Weil <sage@inktank.com>
Cc: Yehuda Sadeh <yehuda@inktank.com>
Cc: stable@vger.kernel.org
Signed-off-by: Chunwei Chen <tuxoko@gmail.com>
Reviewed-by: Ilya Dryomov <ilya.dryomov@inktank.com>
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The following happens when trying to run a kvm guest on a kernel
configured for 64k pages. This doesn't happen with 4k pages:
BUG: failure at include/linux/mm.h:297/put_page_testzero()!
Kernel panic - not syncing: BUG!
CPU: 2 PID: 4228 Comm: qemu-system-aar Tainted: GF 3.13.0-0.rc7.31.sa2.k32v1.aarch64.debug #1
Call trace:
[<fffffe0000096034>] dump_backtrace+0x0/0x16c
[<fffffe00000961b4>] show_stack+0x14/0x1c
[<fffffe000066e648>] dump_stack+0x84/0xb0
[<fffffe0000668678>] panic+0xf4/0x220
[<fffffe000018ec78>] free_reserved_area+0x0/0x110
[<fffffe000018edd8>] free_pages+0x50/0x88
[<fffffe00000a759c>] kvm_free_stage2_pgd+0x30/0x40
[<fffffe00000a5354>] kvm_arch_destroy_vm+0x18/0x44
[<fffffe00000a1854>] kvm_put_kvm+0xf0/0x184
[<fffffe00000a1938>] kvm_vm_release+0x10/0x1c
[<fffffe00001edc1c>] __fput+0xb0/0x288
[<fffffe00001ede4c>] ____fput+0xc/0x14
[<fffffe00000d5a2c>] task_work_run+0xa8/0x11c
[<fffffe0000095c14>] do_notify_resume+0x54/0x58
In arch/arm/kvm/mmu.c:unmap_range(), we end up doing an extra put_page()
on the stage2 pgd which leads to the BUG in put_page_testzero(). This
happens because a pud_huge() test in unmap_range() returns true when it
should always be false with 2-level pages tables used by 64k pages.
This patch removes support for huge puds if 2-level pagetables are
being used.
Signed-off-by: Mark Salter <msalter@redhat.com>
[catalin.marinas@arm.com: removed #ifndef around PUD_SIZE check]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: <stable@vger.kernel.org> # v3.11+
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A few platforms lack a 'device_type = "memory"' for their memory
nodes, relying on an old ppc quirk in order to discover its memory.
Add the missing data so that all parsing code can find memory nodes
correctly.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: <stable@vger.kernel.org>
Acked-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
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The current .dts for ste-ccu8540 lacks a 'device_type = "memory"' for
its memory node, relying on an old ppc quirk in order to discover its
memory. Fix the data so that all parsing code can handle it correctly.
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
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I've missed to add a NULL entry to the bond_intmax_tbl when I introduced
it with the conversion of arp_interval so add it now.
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Fixes: 7bdb04ed0dbf ("bonding: convert arp_interval to use the new option API")
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The original series for reintroducing grant mapping for netback had a patch [1]
to handle receiving of packets from an another VIF. Grant copy on the receiving
side needs the grant ref of the page to set up the op.
The original patch assumed (wrongly) that the frags array haven't changed. In
the case reported by Sander, the sending guest sent a packet where the linear
buffer and the first frag were under PKT_PROT_LEN (=128) bytes.
xenvif_tx_submit() then pulled up the linear area to 128 bytes, and ditched the
first frag. The receiving side had an off-by-one problem when gathered the grant
refs.
This patch fixes that by checking whether the actual frag's page pointer is the
same as the page in the original frag list. It can handle any kind of changes on
the original frags array, like:
- removing granted frags from the array at any point
- adding local pages to the frags list anywhere
- reordering the frags
It's optimized to the most common case, when there is 1:1 relation between the
frags and the list, plus works optimal when frags are removed from the end or
the beginning.
[1]: 3e2234: xen-netback: Handle foreign mapped pages on the guest RX path
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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RFC 4861 states in 7.2.5:
The IsRouter flag in the cache entry MUST be set based on the
Router flag in the received advertisement. In those cases
where the IsRouter flag changes from TRUE to FALSE as a result
of this update, the node MUST remove that router from the
Default Router List and update the Destination Cache entries
for all destinations using that neighbor as a router as
specified in Section 7.3.3. This is needed to detect when a
node that is used as a router stops forwarding packets due to
being configured as a host.
Currently, when dealing with NA Message which IsRouter flag changes from
TRUE to FALSE, the kernel only removes router from the Default Router List,
and don't update the Destination Cache entries.
Now in order to update those Destination Cache entries, i introduce
function rt6_clean_tohost().
Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Conflicts:
net/ipv4/ip_vti.c
Steffen Klassert says:
====================
pull request (net): ipsec 2014-05-15
This pull request has a merge conflict in net/ipv4/ip_vti.c
between commit 8d89dcdf80d8 ("vti: don't allow to add the same
tunnel twice") and commit a32452366b72 ("vti4:Don't count header
length twice"). It can be solved like it is done in linux-next.
1) Fix a ipv6 xfrm output crash when a packet is rerouted
by netfilter to not use IPsec.
2) vti4 counts some header lengths twice leading to an incorrect
device mtu. Fix this by counting these headers only once.
3) We don't catch the case if an unsupported protocol is submitted
to the xfrm protocol handlers, this can lead to NULL pointer
dereferences. Fix this by adding the appropriate checks.
4) vti6 may unregister pernet ops twice on init errors.
Fix this by removing one of the calls to do it only once.
From Mathias Krause.
5) Set the vti tunnel mark before doing a lookup in the error
handlers. Otherwise we don't find the correct xfrm state.
====================
The conflict in ip_vti.c was simple, 'net' had a commit
removing a line from vti_tunnel_init() and this tree
being merged had a commit adding a line to the same
location.
Signed-off-by: David S. Miller <davem@davemloft.net>
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After the call to phy_init_hw failed in phy_attach_direct, phy_detach is called
to detach the phy device from its network device. If the attached driver is a
generic phy driver, this also detaches the driver. Subsequently phy_resume
is called, which assumes without checking that a driver is attached to the
device. This will result in a crash such as
Unable to handle kernel paging request for data at address 0xffffffffffffff90
Faulting instruction address: 0xc0000000003a0e18
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [c0000000003a0e18] .phy_attach_direct+0x68/0x17c
LR [c0000000003a0e6c] .phy_attach_direct+0xbc/0x17c
Call Trace:
[c0000003fc0475d0] [c0000000003a0e6c] .phy_attach_direct+0xbc/0x17c (unreliable)
[c0000003fc047670] [c0000000003a0ff8] .phy_connect_direct+0x28/0x98
[c0000003fc047700] [c0000000003f0074] .of_phy_connect+0x4c/0xa4
Only call phy_resume if phy_init_hw was successful.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Just like for pSCSI, if the transport sets get_write_cache, then it is
not valid to enable write cache emulation for it. Return an error.
see https://bugzilla.redhat.com/show_bug.cgi?id=1082675
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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This patch explicitly disables Immediate + Unsolicited Data for ISER
connections during login in iscsi_login_zero_tsih_s2() when protection
has been enabled for the session by the underlying hardware.
This is currently required because protection / signature memory regions
(MRs) expect T10 PI to occur on RDMA READs + RDMA WRITEs transfers, and
not on a immediate data payload associated with ISCSI_OP_SCSI_CMD, or
unsolicited data-out associated with a ISCSI_OP_SCSI_DATA_OUT.
v2 changes:
- Add TARGET_PROT_DOUT_INSERT check (Sagi)
- Add pr_debug noisemaker (Sagi)
- Add goto to avoid early return from MRDSL check (nab)
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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This patch fixes a free-after-use regression in ft_free_cmd(), where
ft_sess_put() is called with cmd->sess after percpu_ida_free() has
already released the tag.
Fix this bug by saving the ft_sess pointer ahead of percpu_ida_free(),
and pass it directly to ft_sess_put().
The regression was originally introduced in v3.13-rc1 commit:
commit 5f544cfac956971099e906f94568bc3fd1a7108a
Author: Nicholas Bellinger <nab@daterainc.com>
Date: Mon Sep 23 12:12:42 2013 -0700
tcm_fc: Convert to per-cpu command map pre-allocation of ft_cmd
Reported-by: Jun Wu <jwu@stormojo.com>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Cc: Robert Love <robert.w.love@intel.com>
Cc: <stable@vger.kernel.org> #3.13+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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This patch changes an incorrect use of BUG_ON to instead generate a
REJECT + PROTOCOL_ERROR in iscsit_process_nop_out() code. This case
can occur with traditional TCP where a flood of zeros in the data
stream can reach this block for what is presumed to be a NOP-OUT with
a solicited reply, but without a valid iscsi_cmd pointer.
This incorrect BUG_ON was introduced during the v3.11-rc timeframe
with the following commit:
commit 778de368964c5b7e8100cde9f549992d521e9c89
Author: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Fri Jun 14 16:07:47 2013 -0700
iscsi/isert-target: Refactor ISCSI_OP_NOOP RX handling
Reported-by: Arshad Hussain <arshad.hussain@calsoftinc.com>
Cc: stable@vger.kernel.org # 3.11+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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When the target is in stop stage, iSER transport initiates RDMA disconnects.
The iSER initiator may wish to establish a new connection over the
still existing network portal. In this case iSER transport should not
accept and resume new RDMA connections. In order to learn that, iscsi_np
is added with enabled flag so the iSER transport can check when deciding
weather to accept and resume a new connection request.
The iscsi_np is enabled after successful transport setup, and disabled
before iscsi_np login threads are cleaned up.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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RDMA CM and iSCSI target flows are asynchronous and completely
uncorrelated. Relying on the fact that iscsi_accept_np will be called
after CM connection request event and will wait for it is a mistake.
When attempting to login to a few targets this flow is racy and
unpredictable, but for parallel login to dozens of targets will
race and hang every time.
The correct synchronizing mechanism in this case is pending on
a semaphore rather than a wait_for_event. We keep the pending
interruptible for iscsi_np cleanup stage.
(Squash patch to remove dead code into parent - nab)
Reported-by: Slava Shwartsman <valyushash@gmail.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Should be adding list_add_tail($new, $head) and not
the other way around.
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Userspace tools assume if a value is read from configfs, it is valid
and will not cause an error if the same value is written back. The only
valid value for pi_prot_type for backends not supporting DIF is 0, so allow
this particular value to be set without returning an error.
Reported-by: Krzysztof Chojnowski <frirajder@gmail.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: stable@vger.kernel.org # 3.14+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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After silencing the sleeping warning in mls_convert_context() I started
seeing similar traces from hashtab_insert. Do a cond_resched there too.
Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
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selinux policy
On a slow machine (with debugging enabled), upgrading selinux policy may take
a considerable amount of time. Long enough that the softlockup detector
gets triggered.
The backtrace looks like this..
> BUG: soft lockup - CPU#2 stuck for 23s! [load_policy:19045]
> Call Trace:
> [<ffffffff81221ddf>] symcmp+0xf/0x20
> [<ffffffff81221c27>] hashtab_search+0x47/0x80
> [<ffffffff8122e96c>] mls_convert_context+0xdc/0x1c0
> [<ffffffff812294e8>] convert_context+0x378/0x460
> [<ffffffff81229170>] ? security_context_to_sid_core+0x240/0x240
> [<ffffffff812221b5>] sidtab_map+0x45/0x80
> [<ffffffff8122bb9f>] security_load_policy+0x3ff/0x580
> [<ffffffff810788a8>] ? sched_clock_cpu+0xa8/0x100
> [<ffffffff810786dd>] ? sched_clock_local+0x1d/0x80
> [<ffffffff810788a8>] ? sched_clock_cpu+0xa8/0x100
> [<ffffffff8103096a>] ? __change_page_attr_set_clr+0x82a/0xa50
> [<ffffffff810786dd>] ? sched_clock_local+0x1d/0x80
> [<ffffffff810788a8>] ? sched_clock_cpu+0xa8/0x100
> [<ffffffff8103096a>] ? __change_page_attr_set_clr+0x82a/0xa50
> [<ffffffff810788a8>] ? sched_clock_cpu+0xa8/0x100
> [<ffffffff81534ddc>] ? retint_restore_args+0xe/0xe
> [<ffffffff8109c82d>] ? trace_hardirqs_on_caller+0xfd/0x1c0
> [<ffffffff81279a2e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
> [<ffffffff810d28a8>] ? rcu_irq_exit+0x68/0xb0
> [<ffffffff81534ddc>] ? retint_restore_args+0xe/0xe
> [<ffffffff8121e947>] sel_write_load+0xa7/0x770
> [<ffffffff81139633>] ? vfs_write+0x1c3/0x200
> [<ffffffff81210e8e>] ? security_file_permission+0x1e/0xa0
> [<ffffffff8113952b>] vfs_write+0xbb/0x200
> [<ffffffff811581c7>] ? fget_light+0x397/0x4b0
> [<ffffffff81139c27>] SyS_write+0x47/0xa0
> [<ffffffff8153bde4>] tracesys+0xdd/0xe2
Stephen Smalley suggested:
> Maybe put a cond_resched() within the ebitmap_for_each_positive_bit()
> loop in mls_convert_context()?
That seems to do the trick. Tested by downgrading and re-upgrading selinux-policy-targeted.
Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>
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Vince Bridgers says:
====================
Altera TSE: Fix Sparse errors and misc issues
This is version 2 of a patch series to correct sparse errors, cppcheck
warnings, and workaound a multicast filtering issue in the Altera TSE
Ethernet driver. Multicast filtering is not working as expected, so if
present in the hardware will not be used and promiscuous mode enabled
instead. This workaround will be replaced with a working solution when
completely debugged, integrated and tested.
Version 2 is different from the first submission by breaking out the
workaround as a seperate patch and addressing a few structure instance
declarations by making them const per review comments.
If you find this patch acceptable, please consider this for inclusion into
the Altera TSE driver source code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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|
This patch disables multicast hash filtering if present in the hardware
and uses promiscuous mode instead until the problem with multicast
filtering has been debugged, integrated and tested.
Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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This patch fixes the many sparse errors and warnings contained in the
initial submission of the Altera Triple Speed Ethernet driver, and a
few minor cppcheck warnings. Changes are tested on ARM and NIOS2
example designs, and compile tested against multiple architectures.
Typical issues addressed were as follows:
altera_tse_ethtool.c:136:19: warning: incorrect type in argument
1 (different address spaces)
altera_tse_ethtool.c:136:19: expected void const volatile
[noderef] <asn:2>*addr
altera_tse_ethtool.c:136:19: got unsigned int *<noident>
...
altera_sgdma.c:129:31: warning: cast removes address space of
expression
Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As of 06f9cc12caa862f5bc86ebdb4f77568a4bef0167 "nfsd4: don't create
unnecessary mask acl", any non-trivial ACL will be left with an
unitialized entry, and a trivial ACL may write one entry beyond what's
allocated.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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|
From: Cong Wang <cwang@twopensource.com>
commit 50624c934db18ab90 (net: Delay default_device_exit_batch until no
devices are unregistering) introduced rtnl_lock_unregistering() for
default_device_exit_batch(). Same race could happen we when rmmod a driver
which calls rtnl_link_unregister() as we call dev->destructor without rtnl
lock.
For long term, I think we should clean up the mess of netdev_run_todo()
and net namespce exit code.
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
