| Commit message (Collapse) | Author | Age |
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: check size of FUSE_NOTIFY_INVAL_ENTRY message
fuse: mark pages accessed when written to
fuse: delete dead .write_begin and .write_end aops
fuse: fix flock
fuse: fix non-ANSI void function notation
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FUSE_NOTIFY_INVAL_ENTRY didn't check the length of the write so the
message processing could overrun and result in a "kernel BUG at
fs/fuse/dev.c:629!"
Reported-by: Han-Wen Nienhuys <hanwenn@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: stable@kernel.org
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As fuse does not use the page cache library functions when userspace
writes to a file, it did not benefit from 'c8236db mm: mark page
accessed before we write_end()' that made sure pages are properly
marked accessed when written to.
Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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Ever since 'ea9b990 fuse: implement perform_write', the .write_begin
and .write_end aops have been dead code.
Their task - acquiring a page from the page cache, sending out a write
request and releasing the page again - is now done batch-wise to
maximize the number of pages send per userspace request.
Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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Commit a9ff4f87 "fuse: support BSD locking semantics" overlooked a
number of issues with supporing flock locks over existing POSIX
locking infrastructure:
- it's not backward compatible, passing flock(2) calls to userspace
unconditionally (if userspace sets FUSE_POSIX_LOCKS)
- it doesn't cater for the fact that flock locks are automatically
unlocked on file release
- it doesn't take into account the fact that flock exclusive locks
(write locks) don't need an fd opened for write.
The last one invalidates the original premise of the patch that flock
locks can be emulated with POSIX locks.
This patch fixes the first two issues. The last one needs to be fixed
in userspace if the filesystem assumed that a write lock will happen
only on a file operned for write (as in the case of the current fuse
library).
Reported-by: Sebastian Pipping <webmaster@hartwork.org>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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Fix void function parameter list sparse warning:
fs/fuse/inode.c:74:44: warning: non-ANSI function declaration of function 'fuse_alloc_forget'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: Allow handling signals when stack is corrupted.
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If we can't push the pending register windows onto the user's stack,
we disallow signal delivery even if the signal would be delivered on a
valid seperate signal stack.
Add a register window save area in the signal frame, and store any
unsavable windows there.
On sigreturn, if any windows are still queued up in the signal frame,
try to push them back onto the stack and if that fails we kill the
process immediately.
This allows the debug/tst-longjmp_chk2 glibc test case to pass.
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (29 commits)
bridge: fix a possible net_device leak
net: Documentation: RFC 2553bis is now RFC 3493
atm: br2684: Fix oops due to skb->dev being NULL
ipv6: Fix ipv6_getsockopt for IPV6_2292PKTOPTIONS
net: netdev-features.txt update to Documentation/networking/00-INDEX
vlan: reset headers on accel emulation path
forcedeth: call vlan_mode only if hw supports vlans
via-velocity: remove non-tagged packet filtering
bonding:reset backup and inactive flag of slave
net_sched: fix port mirror/redirect stats reporting
sit tunnels: propagate IPv6 transport class to IPv4 Type of Service
gianfar: reduce stack usage in gianfar_ethtool.c
net: minor update to Documentation/networking/scaling.txt
net: add missing entries to Documentation/networking/00-INDEX
gianfar: prevent buggy hw rx vlan tagging
net: sh_eth: Fix build by forgot including linux/interrupt.h
drivers/net/can/sja1000/plx_pci.c: eliminate double free
usbnet/cdc_ncm: Don't use stack variables for DMA
vmxnet3: Don't enable vlan filters in promiscuous mode.
iwlagn: sysfs couldn't find the priv pointer
...
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Jan Beulich reported a possible net_device leak in bridge code after
commit bb900b27a2f4 (bridge: allow creating bridge devices with netlink)
Reported-by: Jan Beulich <JBeulich@novell.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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This bug has been introduced by:
d593411084a56124aa9d80aafa15db8463b2d8f7
Author: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Mon Jul 11 10:48:51 2011 +0300
iwlagn: simplify the bus architecture
Revert part of the buggy patch: dev_get_drvdata will now return
iwl_priv as it did before the patch.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This reverts commit cc1a93e68f6c0d736b771f0746e8e4186f483fdc.
This fix introduced a bug: bad pointer in unload.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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In each case, the freed data should be freed in the error handling code
as
well.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@exists@
local idexpression x;
statement S,S1;
expression E;
identifier fl;
expression *ptr != NULL;
@@
x = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...kfree(x)...+> }
when any
when != true x == NULL
x->fl
...>
(
if (x == NULL) S1
|
if (...) { ... when != x
when forall
(
return \(0\|<+...x...+>\|ptr\);
|
* return ...;
)
}
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Patch should fix this oops:
BUG: unable to handle kernel NULL pointer dereference at 000000a0
IP: [<f81b30c9>] rt2800usb_get_txwi+0x19/0x70 [rt2800usb]
*pdpt = 0000000000000000 *pde = f000ff53f000ff53
Oops: 0000 [#1] SMP
Pid: 198, comm: kworker/u:3 Tainted: G W 3.0.0-wl+ #9 LENOVO 6369CTO/6369CTO
EIP: 0060:[<f81b30c9>] EFLAGS: 00010283 CPU: 1
EIP is at rt2800usb_get_txwi+0x19/0x70 [rt2800usb]
EAX: 00000000 EBX: f465e140 ECX: f4494960 EDX: ef24c5f8
ESI: 810f21f5 EDI: f1da9960 EBP: f4581e80 ESP: f4581e70
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process kworker/u:3 (pid: 198, ti=f4580000 task=f4494960 task.ti=f4580000)
Call Trace:
[<f804790f>] rt2800_txdone_entry+0x2f/0xf0 [rt2800lib]
[<c045110d>] ? warn_slowpath_common+0x7d/0xa0
[<f81b3a38>] ? rt2800usb_work_txdone+0x288/0x360 [rt2800usb]
[<f81b3a38>] ? rt2800usb_work_txdone+0x288/0x360 [rt2800usb]
[<f81b3a13>] rt2800usb_work_txdone+0x263/0x360 [rt2800usb]
[<c046a8d6>] process_one_work+0x186/0x440
[<c046a85a>] ? process_one_work+0x10a/0x440
[<f81b37b0>] ? rt2800usb_probe_hw+0x120/0x120 [rt2800usb]
[<c046c283>] worker_thread+0x133/0x310
[<c04885db>] ? trace_hardirqs_on+0xb/0x10
[<c046c150>] ? manage_workers+0x1e0/0x1e0
[<c047054c>] kthread+0x7c/0x90
[<c04704d0>] ? __init_kthread_worker+0x60/0x60
[<c0826b42>] kernel_thread_helper+0x6/0x1
Oops might happen because we check rt2x00queue_empty(queue) twice,
but this condition can change and we can process entry in
rt2800_txdone_entry(), which was already processed by
rt2800usb_txdone_entry_check() -> rt2x00lib_txdone_noinfo() and
has nullify entry->skb .
Reported-by: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: stable@kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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In rt2800usb_work_txdone we check flags in order:
- ENTRY_OWNER_DEVICE_DATA
- ENTRY_DATA_STATUS_PENDING
- ENTRY_DATA_IO_FAILED
Modify flags in separate order in rt2x00usb_interrupt_txdone, to avoid
processing entries in _txdone with wrong flags or skip processing
ready entries.
Reported-by: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: stable@kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Patch should fix this oops:
BUG: unable to handle kernel NULL pointer dereference at 000000a0
IP: [<f8e06078>] rt2800usb_write_tx_desc+0x18/0xc0 [rt2800usb]
*pdpt = 000000002408c001 *pde = 0000000024079067 *pte = 0000000000000000
Oops: 0000 [#1] SMP
EIP: 0060:[<f8e06078>] EFLAGS: 00010282 CPU: 0
EIP is at rt2800usb_write_tx_desc+0x18/0xc0 [rt2800usb]
EAX: 00000035 EBX: ef2bef10 ECX: 00000000 EDX: d40958a0
ESI: ef1865f8 EDI: ef1865f8 EBP: d4095878 ESP: d409585c
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Call Trace:
[<f8da5e85>] rt2x00queue_write_tx_frame+0x155/0x300 [rt2x00lib]
[<f8da424c>] rt2x00mac_tx+0x7c/0x370 [rt2x00lib]
[<c04882b2>] ? mark_held_locks+0x62/0x90
[<c081f645>] ? _raw_spin_unlock_irqrestore+0x35/0x60
[<c04884ba>] ? trace_hardirqs_on_caller+0x5a/0x170
[<c04885db>] ? trace_hardirqs_on+0xb/0x10
[<f8d618ac>] __ieee80211_tx+0x5c/0x1e0 [mac80211]
[<f8d631fc>] ieee80211_tx+0xbc/0xe0 [mac80211]
[<f8d63163>] ? ieee80211_tx+0x23/0xe0 [mac80211]
[<f8d632e1>] ieee80211_xmit+0xc1/0x200 [mac80211]
[<f8d63220>] ? ieee80211_tx+0xe0/0xe0 [mac80211]
[<c0487d45>] ? lock_release_holdtime+0x35/0x1b0
[<f8d63986>] ? ieee80211_subif_start_xmit+0x446/0x5f0 [mac80211]
[<f8d637dd>] ieee80211_subif_start_xmit+0x29d/0x5f0 [mac80211]
[<f8d63924>] ? ieee80211_subif_start_xmit+0x3e4/0x5f0 [mac80211]
[<c0760188>] ? sock_setsockopt+0x6a8/0x6f0
[<c0760000>] ? sock_setsockopt+0x520/0x6f0
[<c076daef>] dev_hard_start_xmit+0x2ef/0x650
Oops might happen because we perform parallel putting new entries in a
queue (rt2x00queue_write_tx_frame()) and removing entries after
finishing transmitting (rt2800usb_work_txdone()). There are cases when
_txdone may process an entry that was not fully send and nullify
entry->skb .
To fix check in _txdone if entry has flags that indicate pending
transmission and wait until flags get cleared.
Reported-by: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: stable@kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Geoffrey Thomas <geofft@mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This oops have been already fixed with commit
27141666b69f535a4d63d7bc6d9e84ee5032f82a
atm: [br2684] Fix oops due to skb->dev being NULL
It happens that if a packet arrives in a VC between the call to open it on
the hardware and the call to change the backend to br2684, br2684_regvcc
processes the packet and oopses dereferencing skb->dev because it is
NULL before the call to br2684_push().
but have been introduced again with commit
b6211ae7f2e56837c6a4849316396d1535606e90
atm: Use SKB queue and list helpers instead of doing it by-hand.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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IPV6_2292PKTOPTIONS is broken for 32-bit applications running
in COMPAT mode on 64-bit kernels.
The same problem was fixed for IPv4 with the patch:
ipv4: Fix ip_getsockopt for IP_PKTOPTIONS,
commit dd23198e58cd35259dd09e8892bbdb90f1d57748
Signed-off-by: Sorin Dumitru <sdumitru@ixiacom.com>
Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update netdev-features.txt entry in 00-INDEX to incorporate
feedback by Michał Mirosław.
v2: restored tabs that were inadvertently changed to spaces in v1.
sorry for the error.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's after all necessary to do reset headers here. The reason is we
cannot depend that it gets reseted in __netif_receive_skb once skb is
reinjected. For incoming vlanids without vlan_dev, vlan_do_receive()
returns false with skb != NULL and __netif_reveive_skb continues, skb is
not reinjected.
This might be good material for 3.0-stable as well
Reported-by: Mike Auty <mike.auty@gmail.com>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If hw does not support vlans, dont call nv_vlan_mode because it has no point.
I believe that this should fix issues on older non-vlan supportive
chips (like Ingo has).
Reported-ty: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's undesired to filter untagged packets at any time. So simply remove this.
Reported-by: Stephan Bärwolf <stephan.baerwolf@tu-ilmenau.de>
Tested-by: Stephan Bärwolf <stephan.baerwolf@tu-ilmenau.de>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eduard Sinelnikov (eduard.sinelnikov@gmail.com) found that if we change
bonding mode from active backup to round robin, some slaves are still keeping
"backup", and won't transmit packets.
As Jay Vosburgh(fubar@us.ibm.com) pointed out that we can work around that by
removing the bond_is_active_slave() check, because the "backup" flag is only
meaningful for active backup mode.
But if we just simply ignore the bond_is_active_slave() check,
the transmission will work fine, but we can't maintain the correct value of
"backup" flag for each slaves, though it is meaningless for other mode than
active backup.
I'd like to reset "backup" and "inactive" flag in bond_open,
thus we can keep the correct value of them.
As for bond_is_active_slave(), I'd like to prepare another patch to handle it.
V2:
Use C style comment.
Move read_lock(&bond->curr_slave_lock).
Replace restore with reset, for active backup mode, it means "restore",
but for other modes, it means "reset".
Signed-off-by: Weiping Pan <panweiping3@gmail.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When a redirected or mirrored packet is dropped by the target
device we need to record statistics.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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sit tunnels (IPv6 tunnel over IPv4) do not implement the "tos inherit"
case to copy the IPv6 transport class byte from the inner packet to
the IPv4 type of service byte in the outer packet. By contrast, ipip
tunnels and GRE tunnels do.
This patch, adapted from the similar code in net/ipv4/ipip.c and
net/ipv4/ip_gre.c, implements that.
This patch applies to 3.0.1, and has been tested on that version.
Signed-off-by: Lionel Elie Mamane <lionel@mamane.lu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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drivers/net/gianfar_ethtool.c:765: warning: the frame size of 2048 bytes is larger than 1024 bytes
Signed-off-by: Wang Shaoyan <wangshaoyan.pt@taobao.com>
Reviewed-and-tested-by: Sebastian Pöhn <sebastian.poehn@belden.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Incorporate last comments about hyperthreading, interrupt coalescing and
the definition of cache domains into the network scaling document scaling.txt
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A simple janitor duty patch that adds a one sentence overview to
00-INDEX for all files that lacked it.
- does not add entries for subdirectories
- does not modify existing entries.
Signed-off-by: David S. Miller <davem@davemloft.net>
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On some buggy chips, "vlan tag present" flag is set which causes packet
loss. Fix this by checking if rx vlan accel is enabled in features.
Reported-by: Michael Guntsche <mguntsche@gmail.com>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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By a6b7a407865aab9f849dd99a71072b7cd1175116, remove interrupt.h
from netdevice.h. But this forget to revise sh_eth.
This fix the build failure.
error: expected '=', ',', ';', 'asm' or '__attribute__' before 'sh_eth_interrupt'
error: implicit declaration of function 'request_irq'
error: 'sh_eth_interrupt' undeclared (first use in this function)
error: (Each undeclared identifier is reported only once
drivers/net/sh_eth.c:1386: error: for each function it appears in.)
error: 'IRQF_SHARED' undeclared (first use in this function)
error: implicit declaration of function 'free_irq'
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In this code, the failure_cleanup label calls the function
plx_pci_del_card, which frees everything in the card->net_dev array. dev
is placed in this array immediately after allocation, so the two subsequent
jumps to failure_cleanup should not also call free_sja1000dev, but the
second one does.
If plx_pci_check_sja1000 fails, then free_sja1000dev is also called on
dev. Because dev is already in the card->net_dev array, this implies that
when plx_pci_del_card is later called, it may get freed again. So that
entry is reset to NULL after the free.
Finally, if there is a problem with one channel, there will be a hole in the
array. card->channels counts the number of channels that have succeeded,
and does not keep track of the index of the largest element in the array
that is valid. So the loop in plx_pci_del_card is changed to go up to
PLX_PCI_MAX_CHAN, which is only 2.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The cdc_ncm driver still has a few places where stack variables are
passed to the cdc_ncm_do_request function. This triggers a stack trace in
lib/dma-debug.c if the CONFIG_DEBUG_DMA_API option is set.
Adjust these calls to pass parameters that have been allocated with
kzalloc.
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The vmxnet3 driver enables vlan filters if filtering is enabled for
any vlan. In promiscuous mode the filter table is cleared to in
order to disable filtering. However, if a vlan device is subsequently
created that vlan will be added to the filter, re-engaging it. As a
result, not only do we not see all the vlans in promiscuous mode, we
don't even see vlans for which a filter was previously created.
CC: Scott J. Goldman <scottjg@vmware.com>
CC: Shreyas Bhatewara <sbhatewara@vmware.com>
CC: VMware PV-Drivers <pv-drivers@vmware.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/jkirsher/net
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When the Manageability Engine (ME) is enabled on 82579, it periodically
accesses some MAC CSR registers. There is an arbiter in hardware which
prevents simultaneous access of these registers by the host software, i.e.
the driver. There is a hardware bug in the aribter that signals a host
access of the registers later than it actually happens. A write of the
Transmit or Receive Descriptor Tail register could result in an incorrect
value if the driver and ME perform simultaneous accesses which could result
in an access to an invalid memory address. This would return an
Unsupported Request which could hang the hardware. Workaround the issue by
checking the FWSM register bit24 which is set by ME before it accesses the
MAC CSR registers.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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The MAC can drop short packets when the PHY detects noise on the line at
100Mbps due to a timing issue. Workaround the issue by increasing the PLL
counter so the PHY properly recognizes the synchronization pattern from the
MAC.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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On 82577/8/9 in half-duplex when a received packet is passed from the PHY
to the MAC, if too many preamble octects are stripped from the packet
before arriving at the MAC, it can be misintrepeted as an in-band message
rather than an actual frame. For example, if the frame contents resembled
an interrupt request in-band message, it would trigger a false interrupt.
In most cases, the packet is just dropped.
By reducing the number of preamble octets stripped from the beginning of
the frame when passing it from the PHY to the MAC, the MAC will interpret
the frame properly.
An additional uses of the magic PHY_REG(770, 16) have been updated with a
define introduced with this patch.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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This patch is meant to fix a memory leak found via code review for FCOE.
Specifically on DDP flows the SKBs were being dropped without being
recycled, freed, or given to the stack.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86-32, vdso: On system call restart after SYSENTER, use int $0x80
x86, UV: Remove UV delay in starting slave cpus
x86, olpc: Wait for last byte of EC command to be accepted
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When we enter a 32-bit system call via SYSENTER or SYSCALL, we shuffle
the arguments to match the int $0x80 calling convention. This was
probably a design mistake, but it's what it is now. This causes
errors if the system call as to be restarted.
For SYSENTER, we have to invoke the instruction from the vdso as the
return address is hardcoded. Accordingly, we can simply replace the
jump in the vdso with an int $0x80 instruction and use the slower
entry point for a post-restart.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/CA%2B55aFztZ=r5wa0x26KJQxvZOaQq8s2v3u50wCyJcA-Sc4g8gQ@mail.gmail.com
Cc: <stable@kernel.org>
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Delete the 10 msec delay between the INIT and SIPI when starting
slave cpus. I can find no requirement for this delay. BIOS also
has similar code sequences without the delay.
Removing the delay reduces boot time by 40 sec. Every bit helps.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/20110805140900.GA6774@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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When executing EC commands, only waiting when there are still
more bytes to write is usually fine. However, if the system
suspends very quickly after a call to olpc_ec_cmd(), the last
data byte may not yet be transferred to the EC, and the command
will not complete.
This solves a bug where the SCI wakeup mask was not correctly
written when going into suspend.
It means that sometimes, on XO-1.5 (but not XO-1), the
devices that were marked as wakeup sources can't wake up
the system. e.g. you ask for wifi wakeups, suspend, but then
incoming wifi frames don't wake up the system as they should.
Signed-off-by: Paul Fox <pgf@laptop.org>
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Andres Salomon <dilinger@queued.net>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Fixes fallout due to the removal of the cast in commit aa462abe8aaf
("mm: fix __page_to_pfn for a const struct page argument")
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: fix tracing builds inside the source tree
xfs: remove subdirectories
xfs: don't expect xfs headers to be in subdirectories
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The code really requires the current source directory to be in the
header search path. We already do this if building with an object
tree separate from the source, but it needs to be added manually
if building inside the source. The cflags addition for it accidentally
got removed when collapsing the xfs directory structure.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
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Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the
annoying subdirectories in the XFS source code. Besides the large
amount of file rename the only changes are to the Makefile, a few
files including headers with the subdirectory prefix, and the binary
sysctl compat code that includes a header under fs/xfs/ from
kernel/.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
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Fix up some #include directives in preparation for moving a few
header files out of xfs source subdirectories.
Note that "xfs_linux.h" also got its quoting convention for included
files switched.
Signed-off-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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