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Add a simple cpio decoder without library dependencies for the purpose
of extracting components from the initramfs blob for early kernel
uses. Intended consumers so far are microcode and ACPI override.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1349043837-22659-2-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild fixes from Michal Marek:
"There are two more kbuild fixes for 3.6.
One fixes a race between x86's archscripts target and the rule
(re)building scripts/basic/fixdep. The second is a fix for the
previous attempt at fixing make firmware_install with make 3.82.
This new solution should work with any version of GNU make"
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
x86/kbuild: archscripts depends on scripts_basic
firmware: fix directory creation rule matching with make 3.80
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull hwmon subsystem fixes from Jean Delvare.
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
hwmon: (fam15h_power) Tweak runavg_range on resume
hwmon: (coretemp) Use get_online_cpus to avoid races involving CPU hotplug
hwmon: (via-cputemp) Use get_online_cpus to avoid races involving CPU hotplug
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of four essential fixes: two oops related (bnx2i,
virtio-scsi), one data corruption related (hpsa) and one failure to
boot due to interrupt routing issues (mpt2ss).
Signed-off-by: James Bottomley <JBottomley@Parallels.com>"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] hpsa: fix handling of protocol error
[SCSI] mpt2sas: Fix for issue - Unable to boot from the drive connected to HBA
[SCSI] bnx2i: Fixed NULL ptr deference for 1G bnx2 Linux iSCSI offload
[SCSI] scsi: virtio-scsi: Fix address translation failure of HighMem pages used by sg list
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Fix potential NULL pointer dereference in edac_unregister_sysfs() on
system boot introduced in 3.6-rc1.
Since commit 7a623c039 ("edac: rewrite the sysfs code to use struct
device") edac_mc_alloc() no longer initializes embedded kobjects in
struct mem_ctl_info. Therefore edac_mc_free() can no longer simply
decrement a kobject reference count to free the allocated memory unless
the memory controller driver module had also called edac_mc_add_mc().
Now edac_mc_free() will check if the newly embedded struct device has
been registered with sysfs before using either the standard device
release functions or freeing the data structures itself with logic
pulled out of the error path of edac_mc_alloc().
The BUG this patch resolves for me:
BUG: unable to handle kernel NULL pointer dereference at (null)
EIP is at __wake_up_common+0x1a/0x6a
Process modprobe (pid: 933, ti=f3dc6000 task=f3db9520 task.ti=f3dc6000)
Call Trace:
complete_all+0x3f/0x50
device_pm_remove+0x23/0xa2
device_del+0x34/0x142
edac_unregister_sysfs+0x3b/0x5c [edac_core]
edac_mc_free+0x29/0x2f [edac_core]
e7xxx_probe1+0x268/0x311 [e7xxx_edac]
e7xxx_init_one+0x56/0x61 [e7xxx_edac]
local_pci_probe+0x13/0x15
...
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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coccinelle warns about:
+ drivers/edac/edac_mc.c:429:9-23: ERROR: reference preceded by free on line 429
421 if (mci->csrows) {
> 422 for (chn = 0; chn < tot_channels; chn++) {
423 csr = mci->csrows[chn];
424 if (csr) {
> 425 for (chn = 0; chn < tot_channels; chn++)
426 kfree(csr->channels[chn]);
427 kfree(csr);
428 }
> 429 kfree(mci->csrows[i]);
430 }
431 kfree(mci->csrows);
432 }
and that code block seem to mess things up in several ways (double free, memory
leak, out-of-bound reads etc.):
L422: The iterator "chn" and bound "tot_channels" are totally wrong. Should be
"row" and "tot_csrows" respectively. Which means either memory leak, or
out-of-bound reads (which if does not trigger an immediate page fault
error, will further lead to kfree() on random addresses).
L425: The inner loop is reusing the same iterator "chn" as the outer loop,
which could lead to premature end of the outer loop, and hence memory leak.
L429: The array index 'i' in mci->csrows[i] is a temporary value used in
previous loops, and won't change at all in the current loop. Which
means either out-of-bound read and possibly kfree(random number), or the
same mci->csrows[i] get freed once and again, and possibly double free
for the kfree(csr) in L427.
L426/L427: a kfree(csr->channels) is needed in between to avoid leaking the memory.
The buggy code was introduced by commit de3910eb ("edac: change the mem
allocation scheme to make Documentation/kobject.txt happy") in the 3.6-rc1
merge window. Fix it by freeing up resources in this order:
free csrows[i]->channels[j]
free csrows[i]->channels
free csrows[i]
free csrows
CC: Mauro Carvalho Chehab <mchehab@redhat.com>
CC: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The quirk introduced with commit
00250ec90963b7ef6678438888f3244985ecde14 (hwmon: fam15h_power: fix
bogus values with current BIOSes) is not only required during driver
load but also when system resumes from suspend. The BIOS might set the
previously recommended (but unsuitable) initilization value for the
running average range register during resume.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Tested-by: Andreas Hartmann <andihartmann@01019freenet.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@vger.kernel.org # 3.0+
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coretemp_init loops with for_each_online_cpu, adding platform_devices
and sysfs interfaces, then calls register_hotcpu_notifier. There is a
race if a CPU is offlined or onlined after the loop, but before
register_hotcpu_notifier. The race might result in the absence of a
platform_device+sysfs interface for an online CPU, or the presence of
a platform_device+sysfs interface for an offline CPU. A similar race
occurs during coretemp_exit, after the module calls
unregister_hotcpu_notifier, but before it unregisters all devices, a
CPU might offline and a device for an offline CPU will exist for a
short while.
This fix surrounds for_each_online_cpu and register_hotcpu_notifier
with get_online_cpus+put_online_cpus; and surrounds
unregister_hotcpu_notifier and device unregistering with
get_online_cpus+put_online_cpus.
Build tested.
Signed-off-by: Silas Boyd-Wickizer <sbw@mit.edu>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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via_cputemp_init loops with for_each_online_cpu, adding
platform_devices, then calls register_hotcpu_notifier. If a CPU is
offlined between the loop and register_hotcpu_notifier, then later
onlined, via_cputemp_device_add will attempt to add platform devices
with the same ID. A similar race occurs during via_cputemp_exit,
after the module calls unregister_hotcpu_notifier, a CPU might offline
and a device will exist for a CPU that is offline.
This fix surrounds for_each_online_cpu and register_hotcpu_notifier
with get_online_cpus+put_online_cpus; and surrounds
unregister_hotcpu_notifier and device unregistering with
get_online_cpus+put_online_cpus.
Build tested.
Signed-off-by: Silas Boyd-Wickizer <sbw@mit.edu>
Acked-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Pull MIPS fixes from Ralf Baechle:
"Random fixes across arch/mips, essentially.
One fix for an issue in get_user_pages_fast() which previously was
discovered on x86, a miscalculation in the support for the MIPS MT
hardware multithreading support, the RTC support for the Malta and a
fix for a spurious interrupt issue that seems to bite only very
special Malta configurations."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Malta: Don't crash on spurious interrupt.
MIPS: Malta: Remove RTC Data Mode bootstrap breakage
MIPS: mm: Add compound tail page _mapcount when mapped
MIPS: CMP/SMTC: Fix tc_id calculation
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Pull ARM and clkdev fixes from Russell King:
"Two patches for clkdev which resolve the long standing issue that the
devm_* versions were dependent on clkdev, which they shouldn't have
been. Instead, they're dependent on HAVE_CLK instead, which implies
that you're providing clk_get() and clk_put().
A small fix to the ARM decompressor to ensure that the page tables are
properly interpreted by the CPU, and reserve syscall 378 for kcmp (the
checksyscalls.sh script is unfortunately currently broken so arch
maintainers aren't getting notified of new syscalls...)
Lastly, a larger fix for an issue between the common clk subsystem and
smp_twd which causes warnings to be spat out."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: reserve syscall 378 for kcmp
ARM: 7535/1: Reprogram smp_twd based on new common clk framework notifiers
ARM: 7537/1: clk: Fix release in devm_clk_put()
ARM: 7532/1: decompressor: reset SCTLR.TRE for VMSA ARMv7 cores
ARM: 7534/1: clk: Make the managed clk functions generically available
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
"The most important fix is Logitech Unifying receiver regression in
device enumeration fix from Nestor Lopez Casado. In addition to that,
there is a small memory leak fix for Thinkpad keyboard driver from
Axel Lin."
* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: Fix logitech-dj: missing Unifying device issue
HID: lenovo-tpkbd: Fix memory leak in tpkbd_remove_tp()
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Pull cifs fix from Steve French.
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix return value in cifsConvertToUTF16
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This patch fixes an issue introduced after commit 4ea5454203d991ec
("HID: Fix race condition between driver core and ll-driver").
After that commit, hid-core discards any incoming packet that arrives while
hid driver's probe function is being executed.
This broke the enumeration process of hid-logitech-dj, that must receive
control packets in-band with the mouse and keyboard packets. Discarding mouse
or keyboard data at the very begining is usually fine, but it is not the case
for control packets.
This patch forces a re-enumeration of the paired devices when a packet arrives
that comes from an unknown device.
Based on a patch originally written by Benjamin Tissoires.
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Nestor Lopez Casado <nlopezcasad@logitech.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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We need to kfree names for led_mute and led_micmute in tpkbd_remove_tp().
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Bernhard Seibold <mail@bernhard-seibold.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Pull networking updates from David Miller:
"More bug fixes, nothing gets past these guys"
1) More kernel info leaks found by Mathias Krause, this time in the
IPSEC configuration layers.
2) When IPSEC policies change, we do not properly make sure that cached
routes (which could now be stale) throughout the system will be
revalidated. Fix this by generalizing the generation count
invalidation scheme used by ipv4. From Nicolas Dichtel.
3) When repairing TCP sockets, we need to allow to restore not just the
send window scale, but the receive one too. Extend the existing
interface to achieve this in a backwards compatible way. From
Andrey Vagin.
4) A fix for FCOE scatter gather feature validation erroneously caused
scatter gather to be disabled for things like AOE too. From Ed L
Cashin.
5) Several cases of mishandling of error pointers, from Mathias Krause,
Wei Yongjun, and Devendra Naga.
6) Fix gianfar build, from Richard Cochran.
7) CAP_NET_* failures should return -EPERM not -EACCES, from Zhao
Hongjiang.
8) Hardware reset fix in janz-ican3 CAN driver, from Ira W Snyder.
9) Fix oops during rmmod in ti_hecc CAN driver, from Marc Kleine-Budde.
10) The removal of the conditional compilation of the clk support code
in the stmmac driver broke things. This is because the interfaces
used are the ones that don't also perform the enable/disable of the
clk. Fix from Stefan Roese.
11) The QFQ packet scheduler can record out of range virtual start
times, resulting later in misbehavior and even crashes. Fix from
Paolo Valente.
12) If MSG_WAITALL is used with IOAT DMA under TCP, we can wedge the
receiver when the advertised receive window goes to zero. Detect
this case and force the processing of the IOAT DMA queue when it
happens to avoid getting stuck. Fix from Michal Kubecek.
13) batman-adv assumes that test_bit() returns only 0 or 1, but this is
not true for x86 (which returns -1 or 0, via the 'sbb' instruction).
Fix from Linus Lussing.
14) Fix small packet corruption in e1000, from Tushar Dave.
15) make_blackhole() in the IPSEC policy code can do one read unlock too
many, fix from Li RongQing.
16) The new tcp_try_coalesce() code introduced a bug in TCP URG
handling, fix from Eric Dumazet.
17) Fix memory leak in __netif_receive_skb() when doing zerocopy and
when hit an OOM condition. From Michael S Tsirkin.
18) netxen blindly deferences pdev->bus->self, which is not guarenteed
to be non-NULL. Fix from Nikolay Aleksandrov.
19) Fix a performance regression caused by mistakes in ipv6 checksum
validation in the bnx2x driver, fix from Michal Schmidt.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (45 commits)
net/stmmac: Use clk_prepare_enable and clk_disable_unprepare
net: change return values from -EACCES to -EPERM
net/irda: sh_sir: fix return value check in sh_sir_set_baudrate()
stmmac: fix return value check in stmmac_open_ext_timer()
gianfar: fix phc index build failure
ipv6: fix return value check in fib6_add()
bnx2x: remove false warning regarding interrupt number
can: ti_hecc: fix oops during rmmod
can: janz-ican3: fix support for older hardware revisions
net: do not disable sg for packets requiring no checksum
aoe: assert AoE packets marked as requiring no checksum
at91ether: return PTR_ERR if call to clk_get fails
xfrm_user: don't copy esn replay window twice for new states
xfrm_user: ensure user supplied esn replay window is valid
xfrm_user: fix info leak in copy_to_user_tmpl()
xfrm_user: fix info leak in copy_to_user_policy()
xfrm_user: fix info leak in copy_to_user_state()
xfrm_user: fix info leak in copy_to_user_auth()
net: qmi_wwan: adding Huawei E367, ZTE MF683 and Pantech P4200
tcp: restore rcv_wscale in a repair mode (v2)
...
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Pull sparc updates from David Miller:
1) Debugging builds on 32-bit sparc need to handle the R_SPARC_DISP32
relocation, not just 64-bit sparc. From Andreas Larsson.
2) Wei Yongjun noticed that module_alloc() on sparc can return an
error pointer, but that's not allowed. module_alloc() should
return only a valid pointer, or NULL.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: fix the return value of module_alloc()
sparc32: Enable the relocation target R_SPARC_DISP32 for sparc32
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Small fixlets"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/init.c: Fix devmem_is_allowed() off by one
x86/kconfig: Remove outdated reference to Intel CPUs in CONFIG_SWIOTLB
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
"One more timekeeping fix for v3.6"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
time: Fix timeekeping_get_ns overflow on 32bit systems
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Small perf fixlets"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tracing: Don't call page_to_pfn() if page is NULL
perf/x86: Fix Intel Ivy Bridge support
perf/x86/ibs: Check syscall attribute flags
perf/x86: Export Sandy Bridge uncore clockticks event in sysfs
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Pull xfs bugfixes from Ben Myers:
- fix a regression related to xfs_sync_worker racing with unmount.
- fix a race while discarding xfs buffers.
* tag 'for-linus-v3.6-rc7' of git://oss.sgi.com/xfs/xfs:
xfs: stop the sync worker before xfs_unmountfs
xfs: fix race while discarding buffers [V4]
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Pull drm fixes from Dave Airlie:
"Fixes for big 3 drivers:
nouveau: revert earlier MBP fix, put a dmi based MBP fix in its place
(fixes a regression we found on some Dell eDP panels doing some
internal testing)
radeon: revert pll fixes, real fix is too invasive, fix scratch leak
intel: 3 minor fixes, one for HDMI audio."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: add dmi quirk for gpio reset
drm/radeon: Prevent leak of scratch register on resume from suspend
Revert "drm/nv50-/gpio: initialise to vbios defaults during init"
Revert "drm/radeon: rework pll selection (v3)"
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug
drm/i915: Reduce a pin-leak BUG into a WARN
drm/i915: enable lvds pin pairs before dpll on gen2
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"Updates for the input subsystem. Just a few driver updates mostly
dealing with recent regressions."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: edt-ft5x06 - return -EFAULT on copy_to_user() error
Input: sentelic - filter out erratic movement when lifting finger
Input: ambakmi - [un]prepare clocks when enabling amd disabling
Input: i8042 - disable mux on Toshiba C850D
Revert "input: ab8500-ponkey: Create AB8500 domain IRQ mapping"
Input: imx_keypad - fix missing clk conversions
Input: usbtouchscreen - initialize eGalax devices
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Pull watchdog fixes from Wim Van Sebroeck:
"Fix a kdump issue in hpwdt and a possible NULL dereference."
* git://www.linux-watchdog.org/linux-watchdog:
watchdog: move the dereference below the NULL test
hpwdt: Fix kdump issue in hpwdt
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- Add missing 'name' sysfs attributes to ad7314 and ads7871 drivers
- Bump maximum wait time for applesmc driver (again)
- Fix build warning seen with W=1 in include/linux/kernel.h, introduced
with commit b6d86d3d6d6e ("Fix DIV_ROUND_CLOSEST to support negative
dividends")
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
linux/kernel.h: Fix warning seen with W=1 due to change in DIV_ROUND_CLOSEST
hwmon: (applesmc) Bump max wait
hwmon: (ad7314) Add 'name' sysfs attribute
hwmon: (ads7871) Add 'name' sysfs attribute
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Pull slave-dmaengine fixes from Vinod Koul:
"There are two trivial fixes in pl330 driver and two in at_hdmac
driver."
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
DMA: PL330: Check the pointer returned by kzalloc
DMA: PL330: Fix potential NULL pointer dereference in pl330_submit_req()
dmaengine: at_hdmac: check that each sg data length is non-null
dmaengine: at_hdmac: fix comment in atc_prep_slave_sg()
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc bug fixes from Olof Johansson:
"A couple of samsung clock locking fixes, at91 device tree gpio
configuration fix and a couple more for shmobile and i.MX.
All small targeted fixes."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM i.MX25: Make timer irq work again
ARM: imx: armadillo5x0: Fix illegal register access
ARM: shmobile: kzm9g: bugfix: correct mmcif interrupt settings
ARM: SAMSUNG: Use spin_lock_{irqsave,irqrestore} in clk_set_rate
ARM: at91: fix missing #interrupt-cells on gpio-controller
ARM: SAMSUNG: use spin_lock_irqsave() in clk_set_parent
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In case of error, function module_alloc() in other platform never
returns ERR_PTR(), and all of the user only check for NULL, so
we'd better return NULL instead of ERR_PTR().
dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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GNU Binutils 2.20.1 generates .eh_frame sections that uses R_SPARC_DISP32.
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Bug fixes for 3.6-rc7, including some important patches for large page
related memory management issues."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/dasd: fix read unit address configuration loop
s390/dasd: fix pathgroup race
s390/mm: fix user access page-table walk code
s390/hwcaps: do not report high gprs for 31 bit kernel
s390/cio: invalidate cdev pointer before deregistration
s390/cio: fix IO subchannel event race
s390/dasd: move wake_up call
s390/hugetlb: use direct TLB flushing for hugetlbfs pages
s390/mm: fix deadlock in unmap_hugepage_range()
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull Xen bug-fixes from Konrad Rzeszutek Wilk:
- Fix M2P batching re-using the incorrect structure field.
In v3.5 we added batching for M2P override (Machine Frame Number ->
Physical Frame Number), but the original MFN was saved in an
incorrect structure - and we would oops/restore when restoring with
the old MFN.
- Disable BIOS SMP MP table search.
A bootup issue that we had ignored until we found that on DL380 G6 it
was needed.
* tag 'stable/for-linus-3.6-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/boot: Disable BIOS SMP MP table search.
xen/m2p: do not reuse kmap_op->dev_bus_addr
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This patch fixes an issue introduced by commit ID 6a81c26f
[net/stmmac: remove conditional compilation of clk code], which
switched from the internal stmmac_clk_{en}{dis}able calls to
clk_{en}{dis}able. By this, calling clk_prepare and clk_unprepare
was removed.
clk_{un}prepare is mandatory for platforms using common clock framework.
Since these drivers are used by SPEAr platform, which supports common
clock framework, add clk_{un}prepare() support for them. Otherwise
the clocks are not correctly en-/disabled and ethernet support doesn't
work.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The format_array_alloc() function is fundamentally racy, in that it
prints the array twice: once to figure out how much space to allocate
for the buffer, and the second time to actually print out the data.
If any of the array contents changes in between, the allocation size may
be wrong, and the end result may be truncated in odd ways.
Just don't do it. Allocate a maximum-sized array up-front, and just
format the array contents once. The only user of the u32_array
interfaces is the Xen spinlock statistics code, and it has 31 entries in
the arrays, so the maximum size really isn't that big, and the end
result is much simpler code without the bug.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Change return value from -EACCES to -EPERM when the permission check fails.
Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Marc Kleine-Budde says:
====================
two patches for the v3.6 release cycle. Ira W. Snyder fixed support for the
older version of the Janz CMOD-IO Carrier Board. I found and fixed an oops in
the ti_hecc driver, which occurs when removing the module if the network
interface is still open.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL pointer. The NULL test in the error
handling should be replaced with IS_ERR().
dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case of error, the function clk_get() returns ERR_PTR()
and never returns NULL pointer. The NULL test in the error
handling should be replaced with IS_ERR().
dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fixes a build failure introduced in commit 66636287
("gianfar: Support the get_ts_info ethtool method."). Not only was a
global variable inconsistently named, but also it was not exported as
it should have been.
This fix is also needed in stable version 3.5.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case of error, the function fib6_add_1() returns ERR_PTR()
or NULL pointer. The ERR_PTR() case check is missing in fib6_add().
dpatch engine is used to generated this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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u32_array_open() is racy when multiple threads read from a file with a
seek position of zero, i.e. when two or more simultaneous reads are
occurring after the non-seekable files are created. It is possible that
file->private_data is double-freed because the threads races between
kfree(file->private-data);
and
file->private_data = NULL;
The fix is to only do format_array_alloc() when the file is opened and
free it when it is closed.
Note that because the file has always been non-seekable, you can't open
it and read it multiple times anyway, so the data has always been
generated just once. The difference is that now it is generated at open
time rather than at the time of the first read, and that avoids the
race.
Reported-by: Dave Jones <davej@redhat.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Raghavendra <raghavendra.kt@linux.vnet.ibm.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Since version 7.4 the FW configures in the pci config space the max
number of interrupts available to the physical function, instead of
the exact number to use.
This causes a false warning in driver when comparing the number of
configured interrupts to the number about to be used.
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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kcmp has appeared on x86, but has not been noticed because
checksyscalls.sh is broken at the moment. Reserve ARM syscall 378
for this should we ever need it, and add an __IGNORE entry for this
unimplemented syscall.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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While building the SUSE kernel packages, which build the scripts,
make clean, and then build everything, we have been running into spurious
build failures. We tracked them down to a simple dependency issue:
$ make mrproper
CLEAN arch/x86/tools
CLEAN scripts/basic
$ cp patches/config/x86_64/desktop .config
$ make archscripts
HOSTCC arch/x86/tools/relocs
/bin/sh: scripts/basic/fixdep: No such file or directory
make[3]: *** [arch/x86/tools/relocs] Error 1
make[2]: *** [archscripts] Error 2
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2
This was introduced by commit
6520fe55 (x86, realmode: 16-bit real-mode code support for relocs),
which added the archscripts dependency to archprepare.
This patch adds the scripts_basic dependency to the x86 archscripts.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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Since make 3.80 doesn't support secondary expansion it uses a fallback
rule to create firmware directories which is matched after primary
expansion of the $(installed-fw) rule's prerequisite. Commit
6c7080a61fc7 [firmware: fix directory creation rule matching with make
3.82] changed the expression generated after primary expansion such
that the fallback was not matched. Updating the fallback rule to match
the new look primary expansion is not an option for various reasons.
The trailing slash added here to $(INSTALL_FW_PATH)/. while defining
installed-fw-dirs fixes builds with make 3.82 since this will provide
a matching rule for $(INSTALL_FW_PATH)/$$(dir %) when % is in the base
firmware directory (ie. $(dir %) gives './'). Versions of make prior
to 3.82 will strip this trailing slash along with the one generated by
$(dir %) when % is in the base firmware directory and as such continue
to function as before.
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
Tested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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This patch fixes an oops which occurs when unloading the driver, while the
network interface is still up. The problem is that first the io mapping is
teared own, then the CAN device is unregistered, resulting in accessing the
hardware's iomem:
[ 172.744232] Unable to handle kernel paging request at virtual address c88b0040
[ 172.752441] pgd = c7be4000
[ 172.755645] [c88b0040] *pgd=87821811, *pte=00000000, *ppte=00000000
[ 172.762207] Internal error: Oops: 807 [#1] PREEMPT ARM
[ 172.767517] Modules linked in: ti_hecc(-) can_dev
[ 172.772430] CPU: 0 Not tainted (3.5.0alpha-00037-g3554cc0 #126)
[ 172.778961] PC is at ti_hecc_close+0xb0/0x100 [ti_hecc]
[ 172.784423] LR is at __dev_close_many+0x90/0xc0
[ 172.789123] pc : [<bf00c768>] lr : [<c033be58>] psr: 60000013
[ 172.789123] sp : c5c1de68 ip : 00040081 fp : 00000000
[ 172.801025] r10: 00000001 r9 : c5c1c000 r8 : 00100100
[ 172.806457] r7 : c5d0a48c r6 : c5d0a400 r5 : 00000000 r4 : c5d0a000
[ 172.813232] r3 : c88b0000 r2 : 00000001 r1 : c5d0a000 r0 : c5d0a000
[ 172.820037] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 172.827423] Control: 10c5387d Table: 87be4019 DAC: 00000015
[ 172.833404] Process rmmod (pid: 600, stack limit = 0xc5c1c2f0)
[ 172.839447] Stack: (0xc5c1de68 to 0xc5c1e000)
[ 172.843994] de60: bf00c6b8 c5c1dec8 c5d0a000 c5d0a000 00200200 c033be58
[ 172.852478] de80: c5c1de44 c5c1dec8 c5c1dec8 c033bf2c c5c1de90 c5c1de90 c5d0a084 c5c1de44
[ 172.860992] dea0: c5c1dec8 c033c098 c061d3dc c5d0a000 00000000 c05edf28 c05edb34 c000d724
[ 172.869476] dec0: 00000000 c033c2f8 c5d0a084 c5d0a084 00000000 c033c370 00000000 c5d0a000
[ 172.877990] dee0: c05edb00 c033c3b8 c5d0a000 bf00d3ac c05edb00 bf00d7c8 bf00d7c8 c02842dc
[ 172.886474] df00: c02842c8 c0282f90 c5c1c000 c05edb00 bf00d7c8 c0283668 bf00d7c8 00000000
[ 172.894989] df20: c0611f98 befe2f80 c000d724 c0282d10 bf00d804 00000000 00000013 c0068a8c
[ 172.903472] df40: c5c538e8 685f6974 00636365 c61571a8 c5cb9980 c61571a8 c6158a20 c00c9bc4
[ 172.911987] df60: 00000000 00000000 c5cb9980 00000000 c5cb9980 00000000 c7823680 00000006
[ 172.920471] df80: bf00d804 00000880 c5c1df8c 00000000 000d4267 befe2f80 00000001 b6d90068
[ 172.928985] dfa0: 00000081 c000d5a0 befe2f80 00000001 befe2f80 00000880 b6d90008 00000008
[ 172.937469] dfc0: befe2f80 00000001 b6d90068 00000081 00000001 00000000 befe2eac 00000000
[ 172.945983] dfe0: 00000000 befe2b18 00023ba4 b6e6addc 60000010 befe2f80 a8e00190 86d2d344
[ 172.954498] [<bf00c768>] (ti_hecc_close+0xb0/0x100 [ti_hecc]) from [<c033be58>] (__dev__registered_many+0xc0/0x2a0)
[ 172.984161] [<c033c098>] (rollback_registered_many+0xc0/0x2a0) from [<c033c2f8>] (rollback_registered+0x20/0x30)
[ 172.994750] [<c033c2f8>] (rollback_registered+0x20/0x30) from [<c033c370>] (unregister_netdevice_queue+0x68/0x98)
[ 173.005401] [<c033c370>] (unregister_netdevice_queue+0x68/0x98) from [<c033c3b8>] (unregister_netdev+0x18/0x20)
[ 173.015899] [<c033c3b8>] (unregister_netdev+0x18/0x20) from [<bf00d3ac>] (ti_hecc_remove+0x60/0x80 [ti_hecc])
[ 173.026245] [<bf00d3ac>] (ti_hecc_remove+0x60/0x80 [ti_hecc]) from [<c02842dc>] (platform_drv_remove+0x14/0x18)
[ 173.036712] [<c02842dc>] (platform_drv_remove+0x14/0x18) from [<c0282f90>] (__device_release_driver+0x7c/0xbc)
Cc: stable <stable@vger.kernel.org>
Cc: Anant Gole <anantgole@ti.com>
Tested-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The Revision 1.0 Janz CMOD-IO Carrier Board does not have support for
the reset registers. To support older hardware, the code is changed to
use the hardware reset register on the Janz VMOD-ICAN3 hardware itself.
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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git://people.freedesktop.org/~danvet/drm-intel into drm-fixes
Daniel writes:
Essentially just flush my -fixes queue before I head off to xdc.
- gen2 regression fixer, we've enabled the lvds stuff too late. Not
causing any known issues, but this restores the sequence before a
refactor that landed in 3.5, and lvds is a fickle beast. And seriously,
who runs gen2 still ...
- downgrade a BUG to a WARN - we haven't root-caused/fixed the underlying
issue yet, but this should help bug reporters quite a bit.
- properly disable hdmi audio - we've lost track of this, which resulted
in the alsa driver again losing track of the unplug event.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: HDMI - Clear Audio Enable bit for Hot Plug
drm/i915: Reduce a pin-leak BUG into a WARN
drm/i915: enable lvds pin pairs before dpll on gen2
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This fixes the gpio reset problem so the Retina MBP works, but avoids
breaking the Dell systems. Ben will work on a better solution for 3.7.
Tested by me on retina MBP.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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A change in a series of VLAN-related changes appears to have
inadvertently disabled the use of the scatter gather feature of
network cards for transmission of non-IP ethernet protocols like ATA
over Ethernet (AoE). Below is a reference to the commit that
introduces a "harmonize_features" function that turns off scatter
gather when the NIC does not support hardware checksumming for the
ethernet protocol of an sk buff.
commit f01a5236bd4b140198fbcc550f085e8361fd73fa
Author: Jesse Gross <jesse@nicira.com>
Date: Sun Jan 9 06:23:31 2011 +0000
net offloading: Generalize netif_get_vlan_features().
The can_checksum_protocol function is not equipped to consider a
protocol that does not require checksumming. Calling it for a
protocol that requires no checksum is inappropriate.
The patch below has harmonize_features call can_checksum_protocol when
the protocol needs a checksum, so that the network layer is not forced
to perform unnecessary skb linearization on the transmission of AoE
packets. Unnecessary linearization results in decreased performance
and increased memory pressure, as reported here:
http://www.spinics.net/lists/linux-mm/msg15184.html
The problem has probably not been widely experienced yet, because
only recently has the kernel.org-distributed aoe driver acquired the
ability to use payloads of over a page in size, with the patchset
recently included in the mm tree:
https://lkml.org/lkml/2012/8/28/140
The coraid.com-distributed aoe driver already could use payloads of
greater than a page in size, but its users generally do not use the
newest kernels.
Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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