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982,081 commits

Author SHA1 Message Date
Andrii Nakryiko
62039c30c1 bpf: Initialize storage pointers to NULL to prevent freeing garbage pointer
Local storage array isn't initialized, so if cgroup storage allocation fails
for BPF_CGROUP_STORAGE_SHARED, error handling code will attempt to free
uninitialized pointer for BPF_CGROUP_STORAGE_PERCPU storage type. Avoid this
by always initializing storage pointers to NULLs.

Fixes: 8bad74f984 ("bpf: extend cgroup bpf core to allow multiple cgroup storage types")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200309222756.1018737-1-andriin@fb.com
2020-03-09 19:56:48 -07:00
David S. Miller
6c9ee30693 mlx5-updates-2020-03-09
This series provides updates to mlx5 driver:
 
 1) Use vport metadata matching only when mandatory
 2) Introduce root flow table and ethtool steering for uplink representors
 3) Expose port speed via FW when link modes are not available
 3) Misc cleanups
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Merge tag 'mlx5-updates-2020-03-09' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2020-03-09

This series provides updates to mlx5 driver:

1) Use vport metadata matching only when mandatory
2) Introduce root flow table and ethtool steering for uplink representors
3) Expose port speed via FW when link modes are not available
3) Misc cleanups
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:40:42 -07:00
David S. Miller
119959a0a5 Merge branch 'hns3-next'
Huazhong Tan says:

====================
net: hns3: misc updates for -net-next

This series includes some misc updates for the HNS3 ethernet driver.

[patch 1] fixes some mixed type operation warning.
[patch 2] renames a macro to make it more readable.
[patch 3 & 4]  removes some unnecessary code.
[patch 5] adds check before assert VF reset to prevent some unsuitable
error log.
[patch 6 - 9] some modifications related to printing.

Change log:
V1->V2: fixes a wrong print format in [patch 1] suggested by Jian Shen.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Yufeng Mo
fbdc4d79fc net: hns3: delete unnecessary logs after kzalloc fails
Since kernel already has logs after kzalloc fails,
it's unnecessary to print duplicate logs. So this
patch deletes these logs.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Huazhong Tan
8de91e9207 net: hns3: synchronize some print relating to reset issue
This patch modifies some printing relating to reset issue.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Yufeng Mo
77ba415d19 net: hns3: print out command code when dump fails in debugfs
This patch adds a local variable to save the command code in
some dump cases which need to modify the command code, then
the failing command code can be print out for debugging.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Huazhong Tan
e45afb396e net: hns3: print out status register when VF receives unknown source interrupt
When received an unknown vector 0 interrupt, there is not a
helpful information for user to realize that now. So this patch
prints out the value of the status register for this case, and
uses dev_info() instead of dev_dbg() in hclge_check_event_cause().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Yonglong Liu
9091367037 net: hns3: add a check before PF inform VF to reset
When setting VF's MAC from PF, if the VF driver not loaded, the
firmware will return error to PF.

So PF should check whether VF is alive before sending message to
VF when setting VF's MAC.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Guojia Liao
01c45c521a net: hns3: delete some reduandant code
In hclge_add_mc_addr_common() and hclge_rm_mc_addr_common(),
variable req had been set as "0" by memset(), so it's unnecessary
to set .entry_type field as "0" with hnae3_set_bit() again.

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Yufeng Mo
89a8555930 net: hns3: remove an unnecessary resetting check in hclge_handle_hw_ras_error()
In hclge_handle_hw_ras_error(), it is unnecessary to check
HCLGE_STATE_RST_HANDLING flag, because the reset priority
has been ensured by the process itself.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:13 -07:00
Yufeng Mo
4960cabff6 net: hns3: rename macro HCLGE_MAX_NCL_CONFIG_LENGTH
The name of macro HCLGE_MAX_NCL_CONFIG_LENGTH is inaccurate,
this patch renames it to HCLGE_NCL_CONFIG_LENGTH_IN_EACH_CMD.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:12 -07:00
Guojia Liao
72fa490480 net: hns3: fix some mixed type assignment
This patch cleans up some incorrect type in assignment reported by sparse
and compiler.
The warning as below:
- warning : restricted __le16 degrades to integer
- warning : cast from restricted __le32
- warning : cast from restricted __be32
- warning : cast from restricted __be16
and "mixed operation".

Signed-off-by: Guojia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:36:12 -07:00
David S. Miller
09dee69ea6 Merge branch 'ionic-updates'
Shannon Nelson says:

====================
ionic updates

This is a set of small updates for the Pensando ionic driver, some
from internal work, some a result of mailing list discussions.

v4 - don't register mgmt device netdev
v3 - changed __attribute__(packed)) to __packed
v2 - removed print from ionic_init_module()
====================

Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:28 -07:00
Shannon Nelson
1fcbebf115 ionic: drop ethtool driver version
Use the default kernel version in ethtool drv_info output
and drop the module version.

Cc: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
b3f064e974 ionic: add support for device id 0x1004
Add support for the management port device id.  This is to
capture the device and set it up for devlink use, but not set
it up for network operations.  We still use a netdev object
in order to use the napi infrasucture for processing adminq
and notifyq messages, we just don't register the netdev.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
c220e52396 ionic: print pci bus lane info
Print the PCI bus lane information so people can keep an
eye out for poor configurations that might not support
the advertised speed.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
75fcb75b93 ionic: support ethtool rxhash disable
We can disable rxhashing by setting rss_types to 0.  The user
can toggle this with "ethtool -K <ethX> rxhash off|on",
which calls into the .ndo_set_features callback with the
NETIF_F_RXHASH feature bit set or cleared.  This patch adds
a check for that bit and updates the FW if necessary.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
c6d3d73a40 ionic: clean up bitflag usage
Remove the unused flags field and and fix the bitflag names
to include the _F_ flag hint.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
b7f55b81f2 ionic: improve irq numa locality
Spreading the interrupts across the CPU cores is good for load
balancing, but not necessarily as good when using a CPU/core
that is not part of the NUMA local CPU.  If it can be localized,
the kernel's cpumask_local_spread() service will pick a core
that is on the node close to the PCI device.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
5dca69c425 ionic: remove pragma packed
Replace the misguided "#pragma packed" with tags on each
struct/union definition that actually needs it.  This is safer
and more efficient on the various compilers and architectures.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:04 -07:00
Shannon Nelson
30a1e6d0f8 ionic: keep ionic dev on lif init fail
If the basic ionic interface works but the lif creation fails,
don't fail the probe.  This will allow us to use the driver to
help inspect the hw/fw/pci interface for debugging purposes.

Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:34:03 -07:00
David S. Miller
c8e98343bf Merge branch 'mptcp-don-t-auto-adjust-rcvbuf-size-if-locked'
Florian Westphal says:

====================
mptcp: don't auto-adjust rcvbuf size if locked

The mptcp receive buffer is auto-sized based on the subflow receive
buffer.  Don't do this if userspace specfied a value via SO_RCVBUF
setsockopt.

Also update selftest program to provide a new option to set a fixed
size.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:30:08 -07:00
Florian Westphal
ec33916d47 mptcp: don't grow mptcp socket receive buffer when rcvbuf is locked
The mptcp rcvbuf size is adjusted according to the subflow rcvbuf size.
This should not be done if userspace did set a fixed value.

Fixes: 600911ff5f ("mptcp: add rmem queue accounting")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:30:08 -07:00
Florian Westphal
8a4b910d00 mptcp: selftests: add rcvbuf set option
allows to run the tests with fixed receive buffer by passing
"-R <value>" to mptcp_connect.sh.

While at it, add a default 10 second poll timeout so the "-t"
becomes optional -- this makes mptcp_connect simpler to use
during manual testing.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:30:08 -07:00
DENG Qingfang
37feab6076 net: dsa: mt7530: add support for port mirroring
Add support for configuring port mirroring through the cls_matchall
classifier. We do a full ingress and/or egress capture towards a
capture port.
MT7530 supports one monitor port and multiple mirrored ports.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:25:04 -07:00
David S. Miller
6c1a55feca This cleanup patchset includes the following patches:
- bump version strings, by Simon Wunderlich
 
  - Avoid RCU list-traversal in spinlock, by Sven Eckelmann
 
  - Replace zero-length array with flexible-array member,
    by Gustavo A. R. Silva
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Merge tag 'batadv-next-for-davem-20200306' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
This cleanup patchset includes the following patches:

 - bump version strings, by Simon Wunderlich

 - Avoid RCU list-traversal in spinlock, by Sven Eckelmann

 - Replace zero-length array with flexible-array member,
   by Gustavo A. R. Silva
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:14:18 -07:00
David S. Miller
2362059427 Here is a batman-adv bugfix:
- Don't schedule OGM for disabled interface, by Sven Eckelmann
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Merge tag 'batadv-net-for-davem-20200306' of git://git.open-mesh.org/linux-merge

Simon Wunderlich says:

====================
Here is a batman-adv bugfix:

 - Don't schedule OGM for disabled interface, by Sven Eckelmann
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:08:43 -07:00
David S. Miller
af99168a4c Merge branch 'r8169-series-with-improvements-to-rtl_tx'
Heiner Kallweit says:

====================
r8169: series with improvements to rtl_tx

This series includes few improvements to rtl_tx().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:07:42 -07:00
Heiner Kallweit
101438729d r8169: remove now unneeded barrier in rtl_tx
Until ae84bc1873 ("r8169: don't use bit LastFrag in tx descriptor
after send") we used to access another bit in the descriptor, therefore
it seems the barrier was needed. Since this commit DescOwn is the
only bit we're interested in, so the barrier isn't needed any longer.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:07:42 -07:00
Heiner Kallweit
22d352c51e r8169: simplify usage of rtl8169_unmap_tx_skb
Simplify the parameters taken by rtl8169_unmap_tx_skb, this makes
usage of this function easier to read and understand.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:07:42 -07:00
Heiner Kallweit
6a41f2b2f1 r8169: ensure tx_skb is fully reset after calling rtl8169_unmap_tx_skb
So far tx_skb->skb is the only member of the two structs that is not
reset. Make understanding the code easier by resetting both structs
completely in rtl8169_unmap_tx_skb.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:07:42 -07:00
Heiner Kallweit
a0e6650bdd r8169: convert while to for loop in rtl_tx
Slightly improve the code by converting this while to a for loop.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 19:07:42 -07:00
Vladimir Oltean
a8015ded89 net: mscc: ocelot: properly account for VLAN header length when setting MRU
What the driver writes into MAC_MAXLEN_CFG does not actually represent
VLAN_ETH_FRAME_LEN but instead ETH_FRAME_LEN + ETH_FCS_LEN. Yes they are
numerically equal, but the difference is important, as the switch treats
VLAN-tagged traffic specially and knows to increase the maximum accepted
frame size automatically. So it is always wrong to account for VLAN in
the MAC_MAXLEN_CFG register.

Unconditionally increase the maximum allowed frame size for
double-tagged traffic. Accounting for the additional length does not
mean that the other VLAN membership checks aren't performed, so there's
no harm done.

Also, stop abusing the MTU name for configuring the MRU. There is no
support for configuring the MRU on an interface at the moment.

Fixes: a556c76adc ("net: mscc: Add initial Ocelot switch support")
Fixes: fa914e9c4d ("net: mscc: ocelot: create a helper for changing the port MTU")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:58:17 -07:00
Eric Dumazet
afe207d80a ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast()
Commit e18b353f10 ("ipvlan: add cond_resched_rcu() while
processing muticast backlog") added a cond_resched_rcu() in a loop
using rcu protection to iterate over slaves.

This is breaking rcu rules, so lets instead use cond_resched()
at a point we can reschedule

Fixes: e18b353f10 ("ipvlan: add cond_resched_rcu() while processing muticast backlog")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:32:03 -07:00
David S. Miller
206bd0a735 Merge branch 's390-qeth-next'
Julian Wiedmann says:

====================
s390/qeth: updates 2020-03-06

please apply the following patch series for qeth to netdev's net-next
tree.

Just a small update to take care of a regression wrt to IRQ handling in
net-next, reported by Qian Cai. The fix needs some qdio layer changes,
so you will find Vasily's Acked-by in that patch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:16:06 -07:00
Julian Wiedmann
49f42f5d61 s390/qeth: remove VNICC callback parameter struct
After recent cleanups this is just a complicated wrapper around an u32*.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:16:06 -07:00
Julian Wiedmann
1309982414 s390/qdio: add tighter controls for IRQ polling
Once the call to qdio_establish() has completed, qdio is free to deliver
data IRQs to the device driver's IRQ poll handler.

For qeth (the only qdio driver that currently uses IRQ polling) this is
problematic, since the IRQs can arrive before its NAPI instance is
even registered. Calling napi_schedule() from qeth_qdio_start_poll()
then crashes in various nasty ways.

Until recently qeth checked for IFF_UP to drop such early interrupts,
but that's fragile as well since it doesn't enforce any ordering.

Fix this properly by bringing up the qdio device in IRQS_DISABLED mode,
and have the driver explicitly opt-in to receive data IRQs.
qeth does so from qeth_open(), which kick-starts a NAPI poll and then
calls qdio_start_irq() from qeth_poll().

Also add a matching qdio_stop_irq() in qeth_stop() to switch the qdio
dataplane back into a disabled state.

Fixes: 3d35dbe622 ("s390/qeth: don't check for IFF_UP when scheduling napi")
CC: Qian Cai <cai@lca.pw>
Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:16:06 -07:00
Dmitry Yakunin
018d26fcd1 cgroup, netclassid: periodically release file_lock on classid updating
In our production environment we have faced with problem that updating
classid in cgroup with heavy tasks cause long freeze of the file tables
in this tasks. By heavy tasks we understand tasks with many threads and
opened sockets (e.g. balancers). This freeze leads to an increase number
of client timeouts.

This patch implements following logic to fix this issue:
аfter iterating 1000 file descriptors file table lock will be released
thus providing a time gap for socket creation/deletion.

Now update is non atomic and socket may be skipped using calls:

dup2(oldfd, newfd);
close(oldfd);

But this case is not typical. Moreover before this patch skip is possible
too by hiding socket fd in unix socket buffer.

New sockets will be allocated with updated classid because cgroup state
is updated before start of the file descriptors iteration.

So in common cases this patch has no side effects.

Signed-off-by: Dmitry Yakunin <zeil@yandex-team.ru>
Reviewed-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:13:39 -07:00
Leslie Monis
3f95f55eb5 net: sched: pie: change tc_pie_xstats->prob
Commit 105e808c1d ("pie: remove pie_vars->accu_prob_overflows")
changes the scale of probability values in PIE from (2^64 - 1) to
(2^56 - 1). This affects the precision of tc_pie_xstats->prob in
user space.

This patch ensures user space is unaffected.

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:05:55 -07:00
Mahesh Bandewar
ce9a4186f9 macvlan: add cond_resched() during multicast processing
The Rx bound multicast packets are deferred to a workqueue and
macvlan can also suffer from the same attack that was discovered
by Syzbot for IPvlan. This solution is not as effective as in
IPvlan. IPvlan defers all (Tx and Rx) multicast packet processing
to a workqueue while macvlan does this way only for the Rx. This
fix should address the Rx codition to certain extent.

Tx is still suseptible. Tx multicast processing happens when
.ndo_start_xmit is called, hence we cannot add cond_resched().
However, it's not that severe since the user which is generating
 / flooding will be affected the most.

Fixes: 412ca1550c ("macvlan: Move broadcasts into a work queue")
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:02:19 -07:00
Mahesh Bandewar
e18b353f10 ipvlan: add cond_resched_rcu() while processing muticast backlog
If there are substantial number of slaves created as simulated by
Syzbot, the backlog processing could take much longer and result
into the issue found in the Syzbot report.

INFO: rcu_sched detected stalls on CPUs/tasks:
        (detected by 1, t=10502 jiffies, g=5049, c=5048, q=752)
All QSes seen, last rcu_sched kthread activity 10502 (4294965563-4294955061), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.1  R  running task on cpu   1  10984 11210   3866 0x30020008 179034491270
Call Trace:
 <IRQ>
 [<ffffffff81497163>] _sched_show_task kernel/sched/core.c:8063 [inline]
 [<ffffffff81497163>] _sched_show_task.cold+0x2fd/0x392 kernel/sched/core.c:8030
 [<ffffffff8146a91b>] sched_show_task+0xb/0x10 kernel/sched/core.c:8073
 [<ffffffff815c931b>] print_other_cpu_stall kernel/rcu/tree.c:1577 [inline]
 [<ffffffff815c931b>] check_cpu_stall kernel/rcu/tree.c:1695 [inline]
 [<ffffffff815c931b>] __rcu_pending kernel/rcu/tree.c:3478 [inline]
 [<ffffffff815c931b>] rcu_pending kernel/rcu/tree.c:3540 [inline]
 [<ffffffff815c931b>] rcu_check_callbacks.cold+0xbb4/0xc29 kernel/rcu/tree.c:2876
 [<ffffffff815e3962>] update_process_times+0x32/0x80 kernel/time/timer.c:1635
 [<ffffffff816164f0>] tick_sched_handle+0xa0/0x180 kernel/time/tick-sched.c:161
 [<ffffffff81616ae4>] tick_sched_timer+0x44/0x130 kernel/time/tick-sched.c:1193
 [<ffffffff815e75f7>] __run_hrtimer kernel/time/hrtimer.c:1393 [inline]
 [<ffffffff815e75f7>] __hrtimer_run_queues+0x307/0xd90 kernel/time/hrtimer.c:1455
 [<ffffffff815e90ea>] hrtimer_interrupt+0x2ea/0x730 kernel/time/hrtimer.c:1513
 [<ffffffff844050f4>] local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1031 [inline]
 [<ffffffff844050f4>] smp_apic_timer_interrupt+0x144/0x5e0 arch/x86/kernel/apic/apic.c:1056
 [<ffffffff84401cbe>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:778
RIP: 0010:do_raw_read_lock+0x22/0x80 kernel/locking/spinlock_debug.c:153
RSP: 0018:ffff8801dad07ab8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff12
RAX: 0000000000000000 RBX: ffff8801c4135680 RCX: 0000000000000000
RDX: 1ffff10038826afe RSI: ffff88019d816bb8 RDI: ffff8801c41357f0
RBP: ffff8801dad07ac0 R08: 0000000000004b15 R09: 0000000000310273
R10: ffff88019d816bb8 R11: 0000000000000001 R12: ffff8801c41357e8
R13: 0000000000000000 R14: ffff8801cfb19850 R15: ffff8801cfb198b0
 [<ffffffff8101460e>] __raw_read_lock_bh include/linux/rwlock_api_smp.h:177 [inline]
 [<ffffffff8101460e>] _raw_read_lock_bh+0x3e/0x50 kernel/locking/spinlock.c:240
 [<ffffffff840d78ca>] ipv6_chk_mcast_addr+0x11a/0x6f0 net/ipv6/mcast.c:1006
 [<ffffffff84023439>] ip6_mc_input+0x319/0x8e0 net/ipv6/ip6_input.c:482
 [<ffffffff840211c8>] dst_input include/net/dst.h:449 [inline]
 [<ffffffff840211c8>] ip6_rcv_finish+0x408/0x610 net/ipv6/ip6_input.c:78
 [<ffffffff840214de>] NF_HOOK include/linux/netfilter.h:292 [inline]
 [<ffffffff840214de>] NF_HOOK include/linux/netfilter.h:286 [inline]
 [<ffffffff840214de>] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:278
 [<ffffffff83a29efa>] __netif_receive_skb_one_core+0x12a/0x1f0 net/core/dev.c:5303
 [<ffffffff83a2a15c>] __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:5417
 [<ffffffff83a2f536>] process_backlog+0x216/0x6c0 net/core/dev.c:6243
 [<ffffffff83a30d1b>] napi_poll net/core/dev.c:6680 [inline]
 [<ffffffff83a30d1b>] net_rx_action+0x47b/0xfb0 net/core/dev.c:6748
 [<ffffffff846002c8>] __do_softirq+0x2c8/0x99a kernel/softirq.c:317
 [<ffffffff813e656a>] invoke_softirq kernel/softirq.c:399 [inline]
 [<ffffffff813e656a>] irq_exit+0x16a/0x1a0 kernel/softirq.c:439
 [<ffffffff84405115>] exiting_irq arch/x86/include/asm/apic.h:561 [inline]
 [<ffffffff84405115>] smp_apic_timer_interrupt+0x165/0x5e0 arch/x86/kernel/apic/apic.c:1058
 [<ffffffff84401cbe>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:778
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:102
RSP: 0018:ffff880196033bd8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
RAX: ffff88019d8161c0 RBX: 00000000ffffffff RCX: ffffc90003501000
RDX: 0000000000000002 RSI: ffffffff816236d1 RDI: 0000000000000005
RBP: ffff880196033bd8 R08: ffff88019d8161c0 R09: 0000000000000000
R10: 1ffff10032c067f0 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000000
 [<ffffffff816236d1>] do_futex+0x151/0x1d50 kernel/futex.c:3548
 [<ffffffff816260f0>] C_SYSC_futex kernel/futex_compat.c:201 [inline]
 [<ffffffff816260f0>] compat_SyS_futex+0x270/0x3b0 kernel/futex_compat.c:175
 [<ffffffff8101da17>] do_syscall_32_irqs_on arch/x86/entry/common.c:353 [inline]
 [<ffffffff8101da17>] do_fast_syscall_32+0x357/0xe1c arch/x86/entry/common.c:415
 [<ffffffff84401a9b>] entry_SYSENTER_compat+0x8b/0x9d arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f23c69
RSP: 002b:00000000f5d1f12c EFLAGS: 00000282 ORIG_RAX: 00000000000000f0
RAX: ffffffffffffffda RBX: 000000000816af88 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000816af8c
RBP: 00000000f5d1f228 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_sched kthread starved for 10502 jiffies! g5049 c5048 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched       R  running task on cpu   1  13048     8      2 0x90000000 179099587640
Call Trace:
 [<ffffffff8147321f>] context_switch+0x60f/0xa60 kernel/sched/core.c:3209
 [<ffffffff8100095a>] __schedule+0x5aa/0x1da0 kernel/sched/core.c:3934
 [<ffffffff810021df>] schedule+0x8f/0x1b0 kernel/sched/core.c:4011
 [<ffffffff8101116d>] schedule_timeout+0x50d/0xee0 kernel/time/timer.c:1803
 [<ffffffff815c13f1>] rcu_gp_kthread+0xda1/0x3b50 kernel/rcu/tree.c:2327
 [<ffffffff8144b318>] kthread+0x348/0x420 kernel/kthread.c:246
 [<ffffffff84400266>] ret_from_fork+0x56/0x70 arch/x86/entry/entry_64.S:393

Fixes: ba35f8588f (“ipvlan: Defer multicast / broadcast processing to a work-queue”)
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 18:00:58 -07:00
Mahesh Bandewar
ad8192767c ipvlan: don't deref eth hdr before checking it's set
IPvlan in L3 mode discards outbound multicast packets but performs
the check before ensuring the ether-header is set or not. This is
an error that Eric found through code browsing.

Fixes: 2ad7bf3638 (“ipvlan: Initial check-in of the IPVLAN driver.”)
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 17:59:25 -07:00
Yousuk Seung
e08ab0b377 tcp: add bytes not sent to SCM_TIMESTAMPING_OPT_STATS
Add TCP_NLA_BYTES_NOTSENT to SCM_TIMESTAMPING_OPT_STATS that reports
bytes in the write queue but not sent. This is the same metric as
what is exported with tcp_info.tcpi_notsent_bytes.

Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 17:56:33 -07:00
Edward Cree
4b1bd9db07 sfc: detach from cb_page in efx_copy_channel()
It's a resource, not a parameter, so we can't copy it into the new
 channel's TX queues, otherwise aliasing will lead to resource-
 management bugs if the channel is subsequently torn down without
 being initialised.

Before the Fixes:-tagged commit there was a similar bug with
 tsoh_page, but I'm not sure it's worth doing another fix for such
 old kernels.

Fixes: e9117e5099 ("sfc: Firmware-Assisted TSO version 2")
Suggested-by: Derek Shute <Derek.Shute@stratus.com>
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 17:44:05 -07:00
Jin Yao
f787feff69 perf block-info: Support color ops to print block percents in color
It would be nice to print the block percents with colors.

This patch supports the 'Sampled Cycles%' and 'Avg Cycles%' printed in
colors.

For example,

perf record -b ...
perf report --total-cycles or perf report --total-cycles --stdio

percent > 5%, colored in red
percent > 0.5%, colored in green
percent < 0.5%, default color

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200202141655.32053-5-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09 21:43:25 -03:00
Jin Yao
cca0cc76f5 perf block-info: Allow selecting which columns to report and its order
Currently we use a predefined array to set the block info output
formats, it's fixed and inflexible.

This patch adds two parameters "block_hpps" and "nr_hpps" in
block_info__create_report and other static functions, in order to let
user decide which columns to report and with specified report ordering.
It should be more flexible.

Buffers will be allocated to contain the new fmts, of course, we need to
release them before perf exits.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200202141655.32053-4-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09 21:43:25 -03:00
Jin Yao
a8a9f6dc0d perf diff: Use __block_info__cmp() to replace block_pair_cmp()
'perf diff' uses block_pair_cmp() to compare two blocks. But
block_info__cmp() has the similar functionality and it's a bit more
complete.

This patch removes block_pair_cmp() and uses __block_info__cmp()
instead. __block_info__cmp() is wrapped by block_info__cmp() and it
doesn't receives a perf_hpp_fmt parameter.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200202141655.32053-3-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09 21:43:25 -03:00
Jin Yao
3e152aa984 perf block-info: Fix wrong block address comparison in block_info__cmp()
Commit 6041441870 ("perf block: Cleanup and refactor block info
functions") introduces block_info__cmp(), which compares two blocks.

But the issues are:

1. It should return the strcmp cmp value only if it's not 0.

2. When symbol names are matched, we need to compare the addresses
   of blocks further. But it wrongly uses the symbol addresses for
   comparison.

3. If the syms are both NULL, we can't consider these two blocks are
   matched.

This patch fixes above 3 issues.

Fixes: 6041441870 ("perf block: Cleanup and refactor block info functions")
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200202141655.32053-2-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09 21:43:25 -03:00
Jiri Olsa
d942815a76 perf expr: Make expr__parse() return -1 on error
To match the error value of the expr__find_other function, so all
exported expr functions return the same values:
0 on success, -1 on error.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20200228093616.67125-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09 21:43:25 -03:00
Jiri Olsa
0f9b1e124b perf expr: Straighten expr__parse()/expr__find_other() interface
Now that we have a flex parser we don't need to update the parsed string
pointer, so the interface can just be passed the pointer to the
expression instead of a pointer to pointer.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20200228093616.67125-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-03-09 21:43:24 -03:00