| Age | Commit message (Collapse) | Author |
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In i40iw_free_virt_mem(), do not set mem->va to NULL
after freeing it as mem->va is a self-referencing pointer
to mem.
Fixes: 4e9042e647ff ("i40iw: add hw and utils files")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Add NULL check for pdata and pdata->addr before the memcpy in
i40iw_form_cm_frame(). This fixes a NULL pointer de-reference
which occurs when the MPA private data pointer is NULL. Also
only copy pdata->size bytes in the memcpy to prevent reading
past the length of the private data buffer provided by upper layer.
Fixes: f27b4746f378 ("i40iw: add connection management code")
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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During an audit for sk_filter(), we found that rx_busy_skb handling
in l2cap_sock_recv_cb() and l2cap_sock_recvmsg() looks not quite as
intended.
The assumption from commit e328140fdacb ("Bluetooth: Use event-driven
approach for handling ERTM receive buffer") is that errors returned
from sock_queue_rcv_skb() are due to receive buffer shortage. However,
nothing should prevent doing a setsockopt() with SO_ATTACH_FILTER on
the socket, that could drop some of the incoming skbs when handled in
sock_queue_rcv_skb().
In that case sock_queue_rcv_skb() will return with -EPERM, propagated
from sk_filter() and if in L2CAP_MODE_ERTM mode, wrong assumption was
that we failed due to receive buffer being full. From that point onwards,
due to the to-be-dropped skb being held in rx_busy_skb, we cannot make
any forward progress as rx_busy_skb is never cleared from l2cap_sock_recvmsg(),
due to the filter drop verdict over and over coming from sk_filter().
Meanwhile, in l2cap_sock_recv_cb() all new incoming skbs are being
dropped due to rx_busy_skb being occupied.
Instead, just use __sock_queue_rcv_skb() where an error really tells that
there's a receive buffer issue. Split the sk_filter() and enable it for
non-segmented modes at queuing time since at this point in time the skb has
already been through the ERTM state machine and it has been acked, so dropping
is not allowed. Instead, for ERTM and streaming mode, call sk_filter() in
l2cap_data_rcv() so the packet can be dropped before the state machine sees it.
Fixes: e328140fdacb ("Bluetooth: Use event-driven approach for handling ERTM receive buffer")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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In hci_req_sync_complete the event skb is referenced in hdev->req_skb.
It is used (via hci_req_run_skb) from either __hci_cmd_sync_ev which will
pass the skb to the caller, or __hci_req_sync which leaks.
unreferenced object 0xffff880005339a00 (size 256):
comm "kworker/u3:1", pid 1011, jiffies 4294671976 (age 107.389s)
backtrace:
[<ffffffff818d89d9>] kmemleak_alloc+0x49/0xa0
[<ffffffff8116bba8>] kmem_cache_alloc+0x128/0x180
[<ffffffff8167c1df>] skb_clone+0x4f/0xa0
[<ffffffff817aa351>] hci_event_packet+0xc1/0x3290
[<ffffffff8179a57b>] hci_rx_work+0x18b/0x360
[<ffffffff810692ea>] process_one_work+0x14a/0x440
[<ffffffff81069623>] worker_thread+0x43/0x4d0
[<ffffffff8106ead4>] kthread+0xc4/0xe0
[<ffffffff818dd38f>] ret_from_fork+0x1f/0x40
[<ffffffffffffffff>] 0xffffffffffffffff
Signed-off-by: Frédéric Dalleau <frederic.dalleau@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Adding a BO can make it the insertion point for larger sizes as well.
v2: add a comment about the guard structure.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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After arbitrary bio size was introduced, the incoming bio may
be very big. We have to split the bio into small bios so that
each holds at most BIO_MAX_PAGES bvecs for safety reason, such
as bio_clone().
This patch fixes the following kernel crash:
> [ 172.660142] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
> [ 172.660229] IP: [<ffffffff811e53b4>] bio_trim+0xf/0x2a
> [ 172.660289] PGD 7faf3e067 PUD 7f9279067 PMD 0
> [ 172.660399] Oops: 0000 [#1] SMP
> [...]
> [ 172.664780] Call Trace:
> [ 172.664813] [<ffffffffa007f3be>] ? raid1_make_request+0x2e8/0xad7 [raid1]
> [ 172.664846] [<ffffffff811f07da>] ? blk_queue_split+0x377/0x3d4
> [ 172.664880] [<ffffffffa005fb5f>] ? md_make_request+0xf6/0x1e9 [md_mod]
> [ 172.664912] [<ffffffff811eb860>] ? generic_make_request+0xb5/0x155
> [ 172.664947] [<ffffffffa0445c89>] ? prio_io+0x85/0x95 [bcache]
> [ 172.664981] [<ffffffffa0448252>] ? register_cache_set+0x355/0x8d0 [bcache]
> [ 172.665016] [<ffffffffa04497d3>] ? register_bcache+0x1006/0x1174 [bcache]
The issue can be reproduced by the following steps:
- create one raid1 over two virtio-blk
- build bcache device over the above raid1 and another cache device
and bucket size is set as 2Mbytes
- set cache mode as writeback
- run random write over ext4 on the bcache device
Fixes: 54efd50(block: make generic_make_request handle arbitrarily sized bios)
Reported-by: Sebastian Roesner <sroesner-kernelorg@roesner-online.de>
Reported-by: Eric Wheeler <bcache@lists.ewheeler.net>
Cc: stable@vger.kernel.org (4.3+)
Cc: Shaohua Li <shli@fb.com>
Acked-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Improve the management and caching of client rxrpc connection objects.
From this point, client connections will be managed separately from service
connections because AF_RXRPC controls the creation and re-use of client
connections but doesn't have that luxury with service connections.
Further, there will be limits on the numbers of client connections that may
be live on a machine. No direct restriction will be placed on the number
of client calls, excepting that each client connection can support a
maximum of four concurrent calls.
Note that, for a number of reasons, we don't want to simply discard a
client connection as soon as the last call is apparently finished:
(1) Security is negotiated per-connection and the context is then shared
between all calls on that connection. The context can be negotiated
again if the connection lapses, but that involves holding up calls
whilst at least two packets are exchanged and various crypto bits are
performed - so we'd ideally like to cache it for a little while at
least.
(2) If a packet goes astray, we will need to retransmit a final ACK or
ABORT packet. To make this work, we need to keep around the
connection details for a little while.
(3) The locally held structures represent some amount of setup time, to be
weighed against their occupation of memory when idle.
To this end, the client connection cache is managed by a state machine on
each connection. There are five states:
(1) INACTIVE - The connection is not held in any list and may not have
been exposed to the world. If it has been previously exposed, it was
discarded from the idle list after expiring.
(2) WAITING - The connection is waiting for the number of client conns to
drop below the maximum capacity. Calls may be in progress upon it
from when it was active and got culled.
The connection is on the rxrpc_waiting_client_conns list which is kept
in to-be-granted order. Culled conns with waiters go to the back of
the queue just like new conns.
(3) ACTIVE - The connection has at least one call in progress upon it, it
may freely grant available channels to new calls and calls may be
waiting on it for channels to become available.
The connection is on the rxrpc_active_client_conns list which is kept
in activation order for culling purposes.
(4) CULLED - The connection got summarily culled to try and free up
capacity. Calls currently in progress on the connection are allowed
to continue, but new calls will have to wait. There can be no waiters
in this state - the conn would have to go to the WAITING state
instead.
(5) IDLE - The connection has no calls in progress upon it and must have
been exposed to the world (ie. the EXPOSED flag must be set). When it
expires, the EXPOSED flag is cleared and the connection transitions to
the INACTIVE state.
The connection is on the rxrpc_idle_client_conns list which is kept in
order of how soon they'll expire.
A connection in the ACTIVE or CULLED state must have at least one active
call upon it; if in the WAITING state it may have active calls upon it;
other states may not have active calls.
As long as a connection remains active and doesn't get culled, it may
continue to process calls - even if there are connections on the wait
queue. This simplifies things a bit and reduces the amount of checking we
need do.
There are a couple flags of relevance to the cache:
(1) EXPOSED - The connection ID got exposed to the world. If this flag is
set, an extra ref is added to the connection preventing it from being
reaped when it has no calls outstanding. This flag is cleared and the
ref dropped when a conn is discarded from the idle list.
(2) DONT_REUSE - The connection should be discarded as soon as possible and
should not be reused.
This commit also provides a number of new settings:
(*) /proc/net/rxrpc/max_client_conns
The maximum number of live client connections. Above this number, new
connections get added to the wait list and must wait for an active
conn to be culled. Culled connections can be reused, but they will go
to the back of the wait list and have to wait.
(*) /proc/net/rxrpc/reap_client_conns
If the number of desired connections exceeds the maximum above, the
active connection list will be culled until there are only this many
left in it.
(*) /proc/net/rxrpc/idle_conn_expiry
The normal expiry time for a client connection, provided there are
fewer than reap_client_conns of them around.
(*) /proc/net/rxrpc/idle_conn_fast_expiry
The expedited expiry time, used when there are more than
reap_client_conns of them around.
Note that I combined the Tx wait queue with the channel grant wait queue to
save space as only one of these should be in use at once.
Note also that, for the moment, the service connection cache still uses the
old connection management code.
Signed-off-by: David Howells <dhowells@redhat.com>
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The main connection list is used for two independent purposes: primarily it
is used to find connections to reap and secondarily it is used to list
connections in procfs.
Split the procfs list out from the reap list. This allows us to stop using
the reap list for client connections when they acquire a separate
management strategy from service collections.
The client connections will not be on a management single list, and sometimes
won't be on a management list at all. This doesn't leave them floating,
however, as they will also be on an rb-tree rooted on the socket so that the
socket can find them to dispatch calls.
Signed-off-by: David Howells <dhowells@redhat.com>
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Make /proc/net/rxrpc_calls safer by stashing a copy of the peer pointer in
the rxrpc_call struct and checking in the show routine that the peer
pointer, the socket pointer and the local pointer obtained from the socket
pointer aren't NULL before we use them.
Signed-off-by: David Howells <dhowells@redhat.com>
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nvme_set_features() callers seem to expect that passing NULL as the
result pointer is acceptable. Teach nvme_set_features() not to try to
write to the NULL address.
For symmetry, make the same change to nvme_get_features(), despite the
fact that all current callers pass a valid result pointer.
I assume that this bug hasn't been reported in practice because
the callers that pass NULL are all in the SCSI translation layer
and no one uses the relevant operations.
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
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The MIPI DSI output on Tegra SoCs requires some external logic to
calibrate the MIPI pads before a video signal can be transmitted. This
MIPI calibration logic requires to be powered on while the MIPI pads are
being used, which is currently done as part of the DSI driver's probe
implementation.
This is suboptimal because it will leave the MIPI calibration logic
powered up even if the DSI output is never used.
On Tegra114 and earlier this behaviour also causes the driver to hang
while trying to power up the MIPI calibration logic because the power
partition that contains the MIPI calibration logic will be powered on
by the display controller at output pipeline configuration time. Thus
the power up sequence for the MIPI calibration logic happens before
it's power partition is guaranteed to be enabled.
Fix this by splitting up the API into a request/free pair of functions
that manage the runtime dependency between the DSI and the calibration
modules (no registers are accessed) and a set of enable, calibrate and
disable functions that program the MIPI calibration logic at points in
time where the power partition is really enabled.
While at it, make sure that the runtime power management also works in
ganged mode, which is currently also broken.
Reported-by: Jonathan Hunter <jonathanh@nvidia.com>
Tested-by: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Change vif_event_lock to spinlock from mutex, since this lock is
used in wait_event_timeout() via vif_event_equals(). This caused
a warning report as below.
As far as I can see, this lock protects regions where updating
structure members, not function calls. Also, since those
regions are not called from interrupt handlers (of course, it
was a mutex), spin_lock is used instead of spin_lock_irqsave.
[ 186.678550] ------------[ cut here ]------------
[ 186.678556] WARNING: CPU: 2 PID: 7140 at /home/mhiramat/ksrc/linux/kernel/sched/core.c:7545 __might_sleep+0x7c/0x80
[ 186.678560] do not call blocking ops when !TASK_RUNNING; state=2 set at [<ffffffff980d9090>] prepare_to_wait_event+0x60/0x100
[ 186.678560] Modules linked in: brcmfmac xt_CHECKSUM rfcomm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_addrtype br_netfilter xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_raw ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_filter ip6_tables iptable_raw iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_filter ip_tables x_tables bnep nls_iso8859_1 i2c_designware_platform i2c_designware_core snd_hda_codec_hdmi snd_hda_codec_realtek dcdbas snd_hda_codec_generic snd_hda_intel snd_hda_codec intel_rapl snd_hda_core x86_pkg_temp_thermal intel_powerclamp coretemp
[ 186.678594] snd_pcm crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 joydev glue_helper snd_hwdep lrw gf128mul uvcvideo ablk_helper snd_seq_midi cryptd snd_seq_midi_event snd_rawmidi videobuf2_vmalloc videobuf2_memops snd_seq input_leds videobuf2_v4l2 cfg80211 videobuf2_core snd_timer videodev serio_raw btusb snd_seq_device media btrtl rtsx_pci_ms snd mei_me memstick hid_multitouch mei soundcore brcmutil idma64 virt_dma intel_lpss_pci processor_thermal_device intel_soc_dts_iosf hci_uart btbcm btqca btintel bluetooth int3403_thermal dell_smo8800 intel_lpss_acpi intel_lpss int3402_thermal int340x_thermal_zone intel_hid mac_hid int3400_thermal shpchp sparse_keymap acpi_pad acpi_thermal_rel acpi_als kfifo_buf industrialio kvm_intel kvm irqbypass parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq
[ 186.678631] usbhid nouveau ttm i915 rtsx_pci_sdmmc mxm_wmi i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops psmouse drm ahci rtsx_pci nvme nvme_core libahci i2c_hid hid pinctrl_sunrisepoint video wmi pinctrl_intel fjes [last unloaded: brcmfmac]
[ 186.678646] CPU: 2 PID: 7140 Comm: wpa_supplicant Not tainted 4.8.0-rc1+ #8
[ 186.678647] Hardware name: Dell Inc. XPS 15 9550/0N7TVV, BIOS 01.02.00 04/07/2016
[ 186.678648] 0000000000000000 ffff9d8c64b5b900 ffffffff98442f23 ffff9d8c64b5b950
[ 186.678651] 0000000000000000 ffff9d8c64b5b940 ffffffff9808b22b 00001d790000000d
[ 186.678653] ffffffff98c75e78 000000000000026c 0000000000000000 ffff9d8c2706d058
[ 186.678655] Call Trace:
[ 186.678659] [<ffffffff98442f23>] dump_stack+0x85/0xc2
[ 186.678666] [<ffffffff9808b22b>] __warn+0xcb/0xf0
[ 186.678668] [<ffffffff9808b29f>] warn_slowpath_fmt+0x4f/0x60
[ 186.678671] [<ffffffff980d9090>] ? prepare_to_wait_event+0x60/0x100
[ 186.678672] [<ffffffff980d9090>] ? prepare_to_wait_event+0x60/0x100
[ 186.678674] [<ffffffff980b922c>] __might_sleep+0x7c/0x80
[ 186.678680] [<ffffffff988b0853>] mutex_lock_nested+0x33/0x3b0
[ 186.678682] [<ffffffff980e5d8d>] ? trace_hardirqs_on+0xd/0x10
[ 186.678689] [<ffffffffc0c57d2d>] brcmf_cfg80211_wait_vif_event+0xcd/0x130 [brcmfmac]
[ 186.678691] [<ffffffff980d9190>] ? wake_atomic_t_function+0x60/0x60
[ 186.678697] [<ffffffffc0c628e9>] brcmf_p2p_del_vif+0xf9/0x220 [brcmfmac]
[ 186.678702] [<ffffffffc0c57fab>] brcmf_cfg80211_del_iface+0x21b/0x270 [brcmfmac]
[ 186.678716] [<ffffffffc0b0539e>] nl80211_del_interface+0xfe/0x3a0 [cfg80211]
[ 186.678718] [<ffffffff987ca335>] genl_family_rcv_msg+0x1b5/0x370
[ 186.678720] [<ffffffff980e5d8d>] ? trace_hardirqs_on+0xd/0x10
[ 186.678721] [<ffffffff987ca56d>] genl_rcv_msg+0x7d/0xb0
[ 186.678722] [<ffffffff987ca4f0>] ? genl_family_rcv_msg+0x370/0x370
[ 186.678724] [<ffffffff987c9a47>] netlink_rcv_skb+0x97/0xb0
[ 186.678726] [<ffffffff987ca168>] genl_rcv+0x28/0x40
[ 186.678727] [<ffffffff987c93c3>] netlink_unicast+0x1d3/0x2f0
[ 186.678729] [<ffffffff987c933b>] ? netlink_unicast+0x14b/0x2f0
[ 186.678731] [<ffffffff987c97cb>] netlink_sendmsg+0x2eb/0x3a0
[ 186.678733] [<ffffffff9876dad8>] sock_sendmsg+0x38/0x50
[ 186.678734] [<ffffffff9876e4df>] ___sys_sendmsg+0x27f/0x290
[ 186.678737] [<ffffffff9828b935>] ? mntput_no_expire+0x5/0x3f0
[ 186.678739] [<ffffffff9828b9be>] ? mntput_no_expire+0x8e/0x3f0
[ 186.678741] [<ffffffff9828b935>] ? mntput_no_expire+0x5/0x3f0
[ 186.678743] [<ffffffff9828bd44>] ? mntput+0x24/0x40
[ 186.678744] [<ffffffff98267830>] ? __fput+0x190/0x200
[ 186.678746] [<ffffffff9876f125>] __sys_sendmsg+0x45/0x80
[ 186.678748] [<ffffffff9876f172>] SyS_sendmsg+0x12/0x20
[ 186.678749] [<ffffffff988b5680>] entry_SYSCALL_64_fastpath+0x23/0xc1
[ 186.678751] [<ffffffff980e2b8f>] ? trace_hardirqs_off_caller+0x1f/0xc0
[ 186.678752] ---[ end trace e224d66c5d8408b5 ]---
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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Check rtnl_lock is locked in brcmf_p2p_ifp_removed() by passing
rtnl_locked flag. Actually the caller brcmf_del_if() checks whether
the rtnl_lock is locked, but doesn't pass it to brcmf_p2p_ifp_removed().
Without this fix, wpa_supplicant goes softlockup with rtnl_lock
holding (this means all other process using netlink are locked up too)
e.g.
[ 4495.876627] INFO: task wpa_supplicant:7307 blocked for more than 10 seconds.
[ 4495.876632] Tainted: G W 4.8.0-rc1+ #8
[ 4495.876635] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 4495.876638] wpa_supplicant D ffff974c647b39a0 0 7307 1 0x00000000
[ 4495.876644] ffff974c647b39a0 0000000000000000 ffff974c00000000 ffff974c7dc59c58
[ 4495.876651] ffff974c6b7417c0 ffff974c645017c0 ffff974c647b4000 ffffffff86f16c08
[ 4495.876657] ffff974c645017c0 0000000000000246 00000000ffffffff ffff974c647b39b8
[ 4495.876664] Call Trace:
[ 4495.876671] [<ffffffff868aeccc>] schedule+0x3c/0x90
[ 4495.876676] [<ffffffff868af065>] schedule_preempt_disabled+0x15/0x20
[ 4495.876682] [<ffffffff868b0996>] mutex_lock_nested+0x176/0x3b0
[ 4495.876686] [<ffffffff867a2067>] ? rtnl_lock+0x17/0x20
[ 4495.876690] [<ffffffff867a2067>] rtnl_lock+0x17/0x20
[ 4495.876720] [<ffffffffc0ae9a5d>] brcmf_p2p_ifp_removed+0x4d/0x70 [brcmfmac]
[ 4495.876741] [<ffffffffc0aebde6>] brcmf_remove_interface+0x196/0x1b0 [brcmfmac]
[ 4495.876760] [<ffffffffc0ae9901>] brcmf_p2p_del_vif+0x111/0x220 [brcmfmac]
[ 4495.876777] [<ffffffffc0adefab>] brcmf_cfg80211_del_iface+0x21b/0x270 [brcmfmac]
[ 4495.876820] [<ffffffffc097b39e>] nl80211_del_interface+0xfe/0x3a0 [cfg80211]
[ 4495.876825] [<ffffffff867ca335>] genl_family_rcv_msg+0x1b5/0x370
[ 4495.876832] [<ffffffff860e5d8d>] ? trace_hardirqs_on+0xd/0x10
[ 4495.876836] [<ffffffff867ca56d>] genl_rcv_msg+0x7d/0xb0
[ 4495.876839] [<ffffffff867ca4f0>] ? genl_family_rcv_msg+0x370/0x370
[ 4495.876846] [<ffffffff867c9a47>] netlink_rcv_skb+0x97/0xb0
[ 4495.876849] [<ffffffff867ca168>] genl_rcv+0x28/0x40
[ 4495.876854] [<ffffffff867c93c3>] netlink_unicast+0x1d3/0x2f0
[ 4495.876860] [<ffffffff867c933b>] ? netlink_unicast+0x14b/0x2f0
[ 4495.876866] [<ffffffff867c97cb>] netlink_sendmsg+0x2eb/0x3a0
[ 4495.876870] [<ffffffff8676dad8>] sock_sendmsg+0x38/0x50
[ 4495.876874] [<ffffffff8676e4df>] ___sys_sendmsg+0x27f/0x290
[ 4495.876882] [<ffffffff8628b935>] ? mntput_no_expire+0x5/0x3f0
[ 4495.876888] [<ffffffff8628b9be>] ? mntput_no_expire+0x8e/0x3f0
[ 4495.876894] [<ffffffff8628b935>] ? mntput_no_expire+0x5/0x3f0
[ 4495.876899] [<ffffffff8628bd44>] ? mntput+0x24/0x40
[ 4495.876904] [<ffffffff86267830>] ? __fput+0x190/0x200
[ 4495.876909] [<ffffffff8676f125>] __sys_sendmsg+0x45/0x80
[ 4495.876914] [<ffffffff8676f172>] SyS_sendmsg+0x12/0x20
[ 4495.876918] [<ffffffff868b5680>] entry_SYSCALL_64_fastpath+0x23/0xc1
[ 4495.876924] [<ffffffff860e2b8f>] ? trace_hardirqs_off_caller+0x1f/0xc0
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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When tearing down an AUX buf for an event via perf_mmap_close(),
__perf_event_output_stop() is called on the event's CPU to ensure that
trace generation is halted before the process of unmapping and
freeing the buffer pages begins.
The callback is performed via cpu_function_call(), which ensures that it
runs with interrupts disabled and is therefore not preemptible.
Unfortunately, the current code grabs the per-cpu context pointer using
get_cpu_ptr(), which unnecessarily disables preemption and doesn't pair
the call with put_cpu_ptr(), leading to a preempt_count() imbalance and
a BUG when freeing the AUX buffer later on:
WARNING: CPU: 1 PID: 2249 at kernel/events/ring_buffer.c:539 __rb_free_aux+0x10c/0x120
Modules linked in:
[...]
Call Trace:
[<ffffffff813379dd>] dump_stack+0x4f/0x72
[<ffffffff81059ff6>] __warn+0xc6/0xe0
[<ffffffff8105a0c8>] warn_slowpath_null+0x18/0x20
[<ffffffff8112761c>] __rb_free_aux+0x10c/0x120
[<ffffffff81128163>] rb_free_aux+0x13/0x20
[<ffffffff8112515e>] perf_mmap_close+0x29e/0x2f0
[<ffffffff8111da30>] ? perf_iterate_ctx+0xe0/0xe0
[<ffffffff8115f685>] remove_vma+0x25/0x60
[<ffffffff81161796>] exit_mmap+0x106/0x140
[<ffffffff8105725c>] mmput+0x1c/0xd0
[<ffffffff8105cac3>] do_exit+0x253/0xbf0
[<ffffffff8105e32e>] do_group_exit+0x3e/0xb0
[<ffffffff81068d49>] get_signal+0x249/0x640
[<ffffffff8101c273>] do_signal+0x23/0x640
[<ffffffff81905f42>] ? _raw_write_unlock_irq+0x12/0x30
[<ffffffff81905f69>] ? _raw_spin_unlock_irq+0x9/0x10
[<ffffffff81901896>] ? __schedule+0x2c6/0x710
[<ffffffff810022a4>] exit_to_usermode_loop+0x74/0x90
[<ffffffff81002a56>] prepare_exit_to_usermode+0x26/0x30
[<ffffffff81906d1b>] retint_user+0x8/0x10
This patch uses this_cpu_ptr() instead of get_cpu_ptr(), since preemption is
already disabled by the caller.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 95ff4ca26c49 ("perf/core: Free AUX pages in unmap path")
Link: http://lkml.kernel.org/r/20160824091905.GA16944@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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walk.iv is not assigned a value in blkcipher_walk_init. It makes iv uninitialized.
It is possibly a null value(as shown below), which is then used by aes_p8_encrypt.
This patch moves iv = walk.iv after blkcipher_walk_virt, in which walk.iv is set.
[17856.268050] Unable to handle kernel paging request for data at address 0x00000000
[17856.268212] Faulting instruction address: 0xd000000002ff04bc
7:mon> t
[link register ] d000000002ff47b8 p8_aes_xts_crypt+0x168/0x2a0 [vmx_crypto] (938)
[c000000013b77960] d000000002ff4794 p8_aes_xts_crypt+0x144/0x2a0 [vmx_crypto] (unreliable)
[c000000013b77a70] c000000000544d64 skcipher_decrypt_blkcipher+0x64/0x80
[c000000013b77ac0] d000000003c0175c crypt_convert+0x53c/0x620 [dm_crypt]
[c000000013b77ba0] d000000003c043fc kcryptd_crypt+0x3cc/0x440 [dm_crypt]
[c000000013b77c50] c0000000000f3070 process_one_work+0x1e0/0x590
[c000000013b77ce0] c0000000000f34c8 worker_thread+0xa8/0x660
[c000000013b77d80] c0000000000fc0b0 kthread+0x110/0x130
[c000000013b77e30] c0000000000098f0 ret_from_kernel_thread+0x5c/0x6c
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Increase value of supported key sizes for qat_aes_xts.
aes-xts keys consists of keys of equal size concatenated.
Fixes: def14bfaf30d ("crypto: qat - add support for ctr(aes) and xts(aes)")
Cc: stable@vger.kernel.org
Reported-by: Wenqian Yu <wenqian.yu@intel.com>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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We can directly depend on SOC_IMX31 since commit c9ee94965dce
("ARM: imx: deconstruct mxc_rnga initialization")
Since that commit, CONFIG_HW_RANDOM_MXC_RNGA could not be switched on
with unknown symbol ARCH_HAS_RNGA and mxc-rnga.o can't be generated with
ARCH=arm make M=drivers/char/hw_random
Previously, HW_RANDOM_MXC_RNGA required ARCH_HAS_RNGA
which was based on IMX_HAVE_PLATFORM_MXC_RNGA && ARCH_MXC.
IMX_HAVE_PLATFORM_MXC_RNGA was based on SOC_IMX31.
Fixes: c9ee94965dce ("ARM: imx: deconstruct mxc_rnga initialization")
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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These product IDs are listed in Windows driver.
0x6803 corresponds to WeTelecom WM-D300.
0x6802 name is unknown.
Signed-off-by: Aleksandr Makarov <aleksandr.o.makarov@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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If a duplicate packet comes in for a call that has just completed on a
connection's channel then there will be an oops in the data_ready handler
because it tries to examine the connection struct via a call struct (which
we don't have - the pointer is unset).
Since the connection struct pointer is available to us, go direct instead.
Also, the ACK packet to be retransmitted needs three octets of padding
between the soft ack list and the ackinfo.
Fixes: 18bfeba50dfd0c8ee420396f2570f16a0bdbd7de ("rxrpc: Perform terminal call ACK/ABORT retransmission from conn processor")
Signed-off-by: David Howells <dhowells@redhat.com>
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Pull vhost bugfix from Michael Tsirkin:
"This includes a single bugfix for vhost-scsi"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vhost/scsi: fix reuse of &vq->iov[out] in response
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Slave devices are not enumerated by ACPI data because the ACPI handle for the
core driver is NULL if it was enumerated by PCI.
Propagate firmware node handle of the PCI device to the platform device.
Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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After commit 5b8ef3415a21f173
("xfrm: Remove ancient sleeping when the SA is in acquire state")
gc does not need any per-netns data anymore.
As far as gc is concerned all state structs are the same, so we
can use a global work struct for it.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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An earlier patch accidentally replaced a write_lock_bh
with a spin_unlock_bh. Fix this by using spin_lock_bh
instead.
Fixes: 9d0380df6217 ("xfrm: policy: convert policy_lock to spinlock")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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We get 1 warning about global functions without a declaration in the
clocksource/drivers/pxa driver when building with W=1:
drivers/clocksource/pxa_timer.c:221:13: warning: no previous prototype for 'pxa_timer_nodt_init' [-Wmissing-prototypes]
void __init pxa_timer_nodt_init(int irq, void __iomem *base,
In fact, this function is declared in pxa.h, so this patch
add missing header dependencies.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: daniel.lezcano@linaro.org
Cc: xie.baoyou@zte.com.cn
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1471965569-4104-1-git-send-email-baoyou.xie@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The ARM architected timer driver falls under the drivers/clocksource/
catch-all in MAINTAINERS, and get_maintainers.pl doesn't suggest a
number of people who should be Cc'd.
The ARM architected timer is a core component of ARMv7+VE and ARMv8, and
is critical to the correct operation of both architecture ports (and
their respective KVM code), and patches to it should have review by
knowledgeable interested parties.
This patch adds a MAINTAINERS entry for the driver and its low-level
arch components, such that get_maintainer.pl will always include
relevant interested parties for modifications to the driver. For the
timebeing, this means myself and Marc Zyngier.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1470737036-2082-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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MSI Cubi MS-B120 needs the same fixup as the Gigabyte BXBT-2807 for its
mic to work.
They both use a single 3-way jack for both mic and headset with an
ALC283 codec, with the same pins used.
Cc: Daniel Drake <drake@endlessm.com>
Signed-off-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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native_smp_prepare_cpus
-> default_setup_apic_routing
-> enable_IR_x2apic
-> irq_remapping_prepare
-> intel_prepare_irq_remapping
-> intel_setup_irq_remapping
So IR table is setup even if "noapic" boot parameter is added. As a result we
crash later when the interrupt affinity is set due to a half initialized
remapping infrastructure.
Prevent remap initialization when IOAPIC is disabled.
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>
Link: http://lkml.kernel.org/r/1471954039-3942-1-git-send-email-wanpeng.li@hotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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It was reported that hibernation could fail on the 2nd attempt, where the
system hangs at hibernate() -> syscore_resume() -> i8237A_resume() ->
claim_dma_lock(), because the lock has already been taken.
However there is actually no other process would like to grab this lock on
that problematic platform.
Further investigation showed that the problem is triggered by setting
/sys/power/pm_trace to 1 before the 1st hibernation.
Since once pm_trace is enabled, the rtc becomes unmeaningful after suspend,
and meanwhile some BIOSes would like to adjust the 'invalid' RTC (e.g, smaller
than 1970) to the release date of that motherboard during POST stage, thus
after resumed, it may seem that the system had a significant long sleep time
which is a completely meaningless value.
Then in timekeeping_resume -> tk_debug_account_sleep_time, if the bit31 of the
sleep time happened to be set to 1, fls() returns 32 and we add 1 to
sleep_time_bin[32], which causes an out of bounds array access and therefor
memory being overwritten.
As depicted by System.map:
0xffffffff81c9d080 b sleep_time_bin
0xffffffff81c9d100 B dma_spin_lock
the dma_spin_lock.val is set to 1, which caused this problem.
This patch adds a sanity check in tk_debug_account_sleep_time()
to ensure we don't index past the sleep_time_bin array.
[jstultz: Problem diagnosed and original patch by Chen Yu, I've solved the
issue slightly differently, but borrowed his excelent explanation of the
issue here.]
Fixes: 5c83545f24ab "power: Add option to log time spent in suspend"
Reported-by: Janek Kozicki <cosurgi@gmail.com>
Reported-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: linux-pm@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xunlei Pang <xpang@redhat.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: stable <stable@vger.kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Link: http://lkml.kernel.org/r/1471993702-29148-3-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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When I added some extra sanity checking in timekeeping_get_ns() under
CONFIG_DEBUG_TIMEKEEPING, I missed that the NMI safe __ktime_get_fast_ns()
method was using timekeeping_get_ns().
Thus the locking added to the debug checks broke the NMI-safety of
__ktime_get_fast_ns().
This patch open-codes the timekeeping_get_ns() logic for
__ktime_get_fast_ns(), so can avoid any deadlocks in NMI.
Fixes: 4ca22c2648f9 "timekeeping: Add warnings when overflows or underflows are observed"
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: stable <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1471993702-29148-2-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Eric Dumazet says:
====================
net: remove clear_sk() method
Since IPv6 socket lookups no longer dereference pinet6 pointer
and UDP lost SLAB_DESTROY_BY_RCU special rules, we no longer
need special clear_sk() methods.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We no longer use this handler, we can delete it.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now RCU lookups of IPv6 TCP sockets no longer dereference pinet6,
we do not need tcp_v6_clear_sk() anymore.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since we no longer use SLAB_DESTROY_BY_RCU for UDP,
we do not need sk_prot_clear_portaddr_nulls() helper.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now RCU lookups of ipv6 udp sockets no longer dereference
pinet6 field, we can get rid of udp_v6_clear_sk() helper.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This implements SOCK_DESTROY for UDP sockets similar to what was done
for TCP with commit c1e64e298b8ca ("net: diag: Support destroying TCP
sockets.") A process with a UDP socket targeted for destroy is awakened
and recvmsg fails with ECONNABORTED.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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inet_diag_find_one_icsk takes a reference to a socket that is not
released if sock_diag_destroy returns an error. Fix by changing
tcp_diag_destroy to manage the refcnt for all cases and remove
the sock_put calls from tcp_abort.
Fixes: c1e64e298b8ca ("net: diag: Support destroying TCP sockets")
Reported-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of using sock_tx_timestamp, use skb_tx_timestamp to record
software transmit timestamp of a packet.
sock_tx_timestamp resets and overrides the tx_flags of the skb.
The function is intended to be called from within the protocol
layer when creating the skb, not from a device driver. This is
inconsistent with other drivers and will cause issues for TCP.
In TCP, we intend to sample the timestamps for the last byte
for each sendmsg/sendpage. For that reason, tcp_sendmsg calls
tcp_tx_timestamp only with the last skb that it generates.
For example, if a 128KB message is split into two 64KB packets
we want to sample the SND timestamp of the last packet. The current
code in the tun driver, however, will result in sampling the SND
timestamp for both packets.
Also, when the last packet is split into smaller packets for
retranmission (see tcp_fragment), the tun driver will record
timestamps for all of the retransmitted packets and not only the
last packet.
Fixes: eda297729171 (tun: Support software transmit time stamping.)
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Francis Yan <francisyyan@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use kfree_skb() instead of kfree() to free sk_buff.
Fixes: 0d051bf93c06 ("tipc: make bearer packet filtering generic")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After commit ca065d0cf80f ("udp: no longer use SLAB_DESTROY_BY_RCU")
we do not need this special allocation mode anymore, even if it is
harmless.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch changes the return type of ena_set_push_mode() to be void,
as it always returns 0.
Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs fixes from Jaegeuk Kim:
- fsmark regression
- i_size race condition
- wrong conditions in f2fs_move_file_range
* tag 'for-f2fs-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: avoid potential deadlock in f2fs_move_file_range
f2fs: allow copying file range only in between regular files
Revert "f2fs: move i_size_write in f2fs_write_end"
Revert "f2fs: use percpu_rw_semaphore"
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The function sctp_diag_dump_one() currently performs a memcpy()
of 64 bytes from a 16 byte field into another 16 byte field. Fix
by using correct size, use sizeof to obtain correct size instead
of using a hard-coded constant.
Fixes: 8f840e47f190 ("sctp: add the sctp_diag.c file")
Signed-off-by: Lance Richardson <lrichard@redhat.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Miscellaneous improvements
Here are some improvements that are part of the AF_RXRPC rewrite. They
need to be applied on top of the just posted cleanups.
(1) Set the connection expiry on the connection becoming idle when its
last currently active call completes rather than each time put is
called.
This means that the connection isn't held open by retransmissions,
pings and duplicate packets. Future patches will limit the number of
live connections that the kernel will support, so making sure that old
connections don't overstay their welcome is necessary.
(2) Calculate packet serial skew in the UDP data_ready callback rather
than in the call processor on a work queue. Deferring it like this
causes the skew to be elevated by further packets coming in before we
get to make the calculation.
(3) Move retransmission of the terminal ACK or ABORT packet for a
connection to the connection processor, using the terminal state
cached in the rxrpc_connection struct. This means that once last_call
is set in a channel to the current call's ID, no more packets will be
routed to that rxrpc_call struct.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Cleanups
Here are some cleanups for the AF_RXRPC rewrite:
(1) Remove some unused bits.
(2) Call releasing on socket closure is now done in the order in which
calls progress through the phases so that we don't miss a call
actively moving list.
(3) The rxrpc_call struct's channel number field is redundant and replaced
with accesses to the masked off cid field instead.
(4) Use a tracepoint for socket buffer accounting rather than printks.
Unfortunately, since this would require currently non-existend
arch-specific help to divine the current instruction location, the
accounting functions are moved out of line so that
__builtin_return_address() can be used.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove including <linux/version.h> that don't need it.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fixes the following sparse warning:
drivers/net/phy/xilinx_gmii2rgmii.c:61:5: warning:
symbol 'xgmiitorgmii_probe' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add provision for configuring the fastpath queues with Tx (or Rx) only
functionality.
Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We currently enable interrupts before we enable NAPI. If an RX interrupt
hits before we enabled NAPI then the NAPI callback is never called and
we leave the hardware with RX interrupts disabled, which of course leads
us to never handling received packets. Fix this by moving the interrupt
enable to after we've enable NAPI and the reclaim tasklet.
Fixes: cd5e41234729 ("dwc_eth_qos: do phy_start before resetting hardware")
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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clk_prepare_enable() may fail, so we should better check its return
value and propagate it in the case of failure
While at it, replace __lpc_eth_clock_enable() with a plain
clk_prepare_enable/clk_disable_unprepare() call in order to
simplify the code.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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