- 23 Nov, 2011 1 commit
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Chris Bagwell authored
This allows ASUS Eee Slate touchscreens to work. Signed-off-by:
Chris Bagwell <chris@cnpbagwell.com> Reviewed-by:
Benjamin Tissoires <benjamin.tissoires@gmail.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz>
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- 03 Nov, 2011 4 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hidLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: Revert "HID: multitouch: decide if hid-multitouch needs to handle mt devices" HID: drivers/hid/hid-roccat.c: eliminate a null pointer dereference HID: hid-apple: add device ID of another wireless aluminium HID: Add device IDs for Macbook Pro 8 keyboards
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Linus Torvalds authored
This reverts commit 144060fe. It causes a resume regression for Andi on his Acer Aspire 1830T post 3.1. The screen just stays black after wakeup. Also, it really looks like the wrong way to suspend and resume perf events: I think they should be done as part of the CPU suspend and resume, rather than as a notifier that does smp_call_function(). Reported-by:
Andi Kleen <andi@firstfloor.org> Acked-by:
Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/steve/linux-dmLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/linux-dm: dm: raid fix device status indicator when array initializing dm log userspace: add log device dependency dm log userspace: fix comment hyphens dm: add thin provisioning target dm: add persistent data library dm: add bufio dm: export dm get md dm table: add immutable feature dm table: add always writeable feature dm table: add singleton feature dm kcopyd: add dm_kcopyd_zero to zero an area dm: remove superfluous smp_mb dm: use local printk ratelimit dm table: propagate non rotational flag
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git://git.selinuxproject.org/~jmorris/linux-securityLinus Torvalds authored
* 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security: TOMOYO: Fix interactive judgment functionality.
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- 02 Nov, 2011 35 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edacLinus Torvalds authored
* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (21 commits) MAINTAINERS: add an entry for Edac Sandy Bridge driver edac: tag sb_edac as EXPERIMENTAL, as it requires more testing EDAC: Fix incorrect edac mode reporting in sb_edac edac: sb_edac: Add it to the building system edac: Add an experimental new driver to support Sandy Bridge CPU's i7300_edac: Fix error cleanup logic i7core_edac: Initialize memory name with cpu, channel, bank i7core_edac: Fix compilation on 32 bits arch i7core_edac: scrubbing fixups EDAC: Correct Kconfig dependencies i7core_edac: return -ENODEV if no MC is found i7core_edac: use edac's own way to print errors MAINTAINERS: remove dropped edac_mce.* from the file i7core_edac: Drop the edac_mce facility x86, MCE: Use notifier chain only for MCE decoding EDAC i7core: Use mce socketid for better compatibility i7core_edac: Don't enable memory scrubbing for Xeon 35xx i7core_edac: Add scrubbing support edac: Move edac main structs to include/linux/edac.h i7core_edac: Fix oops when trying to inject errors ...
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
* 'for-3.2' of git://linux-nfs.org/~bfields/linux: nfsd4: typo logical vs bitwise negate in nfsd4_decode_share_access
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linuxLinus Torvalds authored
* 'misc-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: MAINTAINERS: Update entry for IA64 [IA64] gpio: GENERIC_GPIO default must be n [IA64[ add CONFIG_NET_VENDOR_INTEL=y to default config files where needed [IA64] agp/hp-agp: Allow binding user memory to the AGP GART [IA64] sn2: add missing put_cpu()
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Linus Torvalds authored
Says Andrew: "60 patches. That's good enough for -rc1 I guess. I have quite a lot of detritus to be rechecked, work through maintainers, etc. - most of the remains of MM - rtc - various misc - cgroups - memcg - cpusets - procfs - ipc - rapidio - sysctl - pps - w1 - drivers/misc - aio" * akpm: (60 commits) memcg: replace ss->id_lock with a rwlock aio: allocate kiocbs in batches drivers/misc/vmw_balloon.c: fix typo in code comment drivers/misc/vmw_balloon.c: determine page allocation flag can_sleep outside loop w1: disable irqs in critical section drivers/w1/w1_int.c: multiple masters used same init_name drivers/power/ds2780_battery.c: fix deadlock upon insertion and removal drivers/power/ds2780_battery.c: add a nolock function to w1 interface drivers/power/ds2780_battery.c: create central point for calling w1 interface w1: ds2760 and ds2780, use ida for id and ida_simple_get() to get it pps gpio client: add missing dependency pps: new client driver using GPIO pps: default echo function include/linux/dma-mapping.h: add dma_zalloc_coherent() sysctl: make CONFIG_SYSCTL_SYSCALL default to n sysctl: add support for poll() RapidIO: documentation update drivers/net/rionet.c: fix ethernet address macros for LE platforms RapidIO: fix potential null deref in rio_setup_device() RapidIO: add mport driver for Tsi721 bridge ...
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Andrew Bresticker authored
While back-porting Johannes Weiner's patch "mm: memcg-aware global reclaim" for an internal effort, we noticed a significant performance regression during page-reclaim heavy workloads due to high contention of the ss->id_lock. This lock protects idr map, and serializes calls to idr_get_next() in css_get_next() (which is used during the memcg hierarchy walk). Since idr_get_next() is just doing a look up, we need only serialize it with respect to idr_remove()/idr_get_new(). By making the ss->id_lock a rwlock, contention is greatly reduced and performance improves. Tested: cat a 256m file from a ramdisk in a 128m container 50 times on each core (one file + container per core) in parallel on a NUMA machine. Result is the time for the test to complete in 1 of the containers. Both kernels included Johannes' memcg-aware global reclaim patches. Before rwlock patch: 1710.778s After rwlock patch: 152.227s Signed-off-by:
Andrew Bresticker <abrestic@google.com> Cc: Paul Menage <menage@gmail.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Acked-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Ying Han <yinghan@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Jeff Moyer authored
In testing aio on a fast storage device, I found that the context lock takes up a fair amount of cpu time in the I/O submission path. The reason is that we take it for every I/O submitted (see __aio_get_req). Since we know how many I/Os are passed to io_submit, we can preallocate the kiocbs in batches, reducing the number of times we take and release the lock. In my testing, I was able to reduce the amount of time spent in _raw_spin_lock_irq by .56% (average of 3 runs). The command I used to test this was: aio-stress -O -o 2 -o 3 -r 8 -d 128 -b 32 -i 32 -s 16384 <dev> I also tested the patch with various numbers of events passed to io_submit, and I ran the xfstests aio group of tests to ensure I didn't break anything. Signed-off-by:
Jeff Moyer <jmoyer@redhat.com> Cc: Daniel Ehrenberg <dehrenberg@google.com> Signed-off-by:
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Rakib Mullick authored
Fix typo in code comment. Signed-off-by:
Rakib Mullick <rakib.mullick@gmail.com> Acked-by:
Dmitry Torokhov <dtor@vmware.com> Signed-off-by:
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Rakib Mullick authored
In vmballoon_reserve_page(), flags has been passed from the callee function (vmballoon_inflate here). So, we can determine can_sleep outside the loop. Signed-off-by:
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Jan Weitzel authored
Interrupting w1_delay() in w1_read_bit() results in missing the low level on the w1 line and receiving "1" instead of "0". Add local_irq_save()/local_irq_restore() around the critical section Signed-off-by:
Jan Weitzel <j.weitzel@phytec.de> Acked-by:
Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
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Florian Faber authored
When using multiple masters, w1_int.c would use the .init_name from w1.c for all entities, which will fail when creating a corresponding sysfs entry. This patch uses the unique name previously generated. WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0x48/0x64() sysfs: cannot create duplicate filename '/devices/w1 bus master' Modules linked in: Call trace: [<9001a604>] warn_slowpath_common+0x34/0x44 [<9001a64c>] warn_slowpath_fmt+0x14/0x18 [<90078020>] sysfs_add_one+0x48/0x64 [<900784ec>] create_dir+0x40/0x68 [<9007857a>] sysfs_create_dir+0x66/0x78 [<900c1a8a>] kobject_add_internal+0x6e/0x104 [<900c1bc0>] kobject_add_varg+0x20/0x2c [<900c1c1c>] kobject_add+0x30/0x3c [<900dbd66>] device_add+0x6a/0x378 [<900dbb4a>] device_initialize+0x12/0x48 [<900dc080>] device_register+0xc/0x10 [<900f99be>] w1_add_master_device+0x162/0x274 [<90008e7a>] w1_gpio_probe+0x66/0xb4 [<9000030c>] kernel_init+0x0/0xe8 [<900dde54>] platform_drv_probe+0xc/0xe [<9000030c>] kernel_init+0x0/0xe8 [<900dd4f8>] driver_probe_device+0x6c/0xdc [<900dd5fc>] __driver_attach+0x34/0x48 [<900dcce8>] bus_for_each_dev+0x2c/0x48 [<900dd5c8>] __driver_attach+0x0/0x48 [<900dd38c>] driver_attach+0x10/0x14 [<900dd16a>] bus_add_driver+0x6a/0x18c [<900dd768>] driver_register+0x60/0xb8 [<90011594>] __initcall_w1_therm_init6+0x0/0x4 [<90008e00>] w1_gpio_init+0x0/0x14 [<9000030c>] kernel_init+0x0/0xe8 [<900ddf48>] platform_driver_register+0x30/0x38 [<90011594>] __initcall_w1_therm_init6+0x0/0x4 [<90008e00>] w1_gpio_init+0x0/0x14 [<9000030c>] kernel_init+0x0/0xe8 [<900ddf5e>] platform_driver_probe+0xe/0x3c [<90008e0c>] w1_gpio_init+0xc/0x14 [<90011594>] __initcall_w1_therm_init6+0x0/0x4 [<90008e00>] w1_gpio_init+0x0/0x14 [<900126d4>] do_one_initcall+0x34/0x130 [<90000372>] kernel_init+0x66/0xe8 [<90011594>] __initcall_w1_therm_init6+0x0/0x4 [<9001ca3e>] do_exit+0x0/0x3a6 [<9000030c>] kernel_init+0x0/0xe8 [<9001ca3e>] do_exit+0x0/0x3a6 ---[ end trace 5a9233884fead918 ]--- kobject_add_internal failed for w1 bus master with -EEXIST, don't try to register things with the same name in the same directory. Signed-off-by:
Florian Faber <faber@faberman.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
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Clifton Barnes authored
Fixes the deadlock when inserting and removing the ds2780. Signed-off-by:
Clifton Barnes <cabarnes@indesign-llc.com> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: <stable@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by:
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Clifton Barnes authored
Adds a nolock function to the w1 interface to avoid locking the mutex if needed. Signed-off-by:
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Clifton Barnes authored
Simply creates one point to call the w1 interface. Signed-off-by:
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Jonathan Cameron authored
Straightforward. As an aside, the ida_init calls are not needed as far as I can see needed. (DEFINE_IDA does the same already). Signed-off-by:
Jonathan Cameron <jic23@cam.ac.uk> Cc: Evgeniy Polyakov <zbr@ioremap.net> Acked-by:
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Heiko Carstens authored
Add "depends on GENERIC_HARDIRQS" to avoid compile breakage on s390: drivers/built-in.o: In function `pps_gpio_remove': linux-next/drivers/pps/clients/pps-gpio.c:189: undefined reference to `free_irq' Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Cc: James Nuss <jamesnuss@nanometrics.ca> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by:
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James Nuss authored
This client driver allows you to use a GPIO pin as a source for PPS signals. Platform data [1] are used to specify the GPIO pin number, label, assert event edge type, and whether clear events are captured. This driver is based on the work by Ricardo Martins who submitted an initial implementation [2] of a PPS IRQ client driver to the linuxpps mailing-list on Dec 3 2010. [1] include/linux/pps-gpio.h [2] http://ml.enneenne.com/pipermail/linuxpps/2010-December/004155.html [akpm@linux-foundation.org: remove unneeded cast of void*] Signed-off-by:
James Nuss <jamesnuss@nanometrics.ca> Cc: Ricardo Martins <rasm@fe.up.pt> Acked-by:
Rodolfo Giometti <giometti@linux.it> Signed-off-by:
Ricardo Martins <rasm@fe.up.pt> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Igor Plyatov <plyatov@gmail.com> Signed-off-by:
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James Nuss authored
A default echo function has been provided so it is no longer an error when you specify PPS_ECHOASSERT or PPS_ECHOCLEAR without an explicit echo function. This allows some code re-use and also makes it easier to write client drivers since the default echo function does not normally need to change. Signed-off-by:
Ben Gardiner <bengardiner@nanometrics.ca> Acked-by:
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Andrew Morton authored
Lots of driver code does a dma_alloc_coherent() and then zeroes out the memory with a memset. Make it easy for them. Cc: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by:
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WANG Cong authored
When I tried to send a patch to remove it, Andi told me we still need to keep compabitlies for old libc, so we can't remove this completely. Then just make it default to n and remove the doc from feature-removal-schedule.txt. Signed-off-by:
WANG Cong <amwang@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Lucas De Marchi authored
Adding support for poll() in sysctl fs allows userspace to receive notifications of changes in sysctl entries. This adds a infrastructure to allow files in sysctl fs to be pollable and implements it for hostname and domainname. [akpm@linux-foundation.org: s/declare/define/ for definitions] Signed-off-by:
Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: Greg KH <gregkh@suse.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Alexandre Bounine authored
Update rapidio.txt to reflect changes from recent patch. See http://marc.info/?l=linux-kernel&m=131285620113589&w=2 for details. Signed-off-by:
Alexandre Bounine <alexandre.bounine@idt.com> Cc: Liu Gang <Gang.Liu@freescale.com> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by:
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Alexandre Bounine authored
Modify Ethernet addess macros to be compatible with BE/LE platforms Signed-off-by:
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Alexandre Bounine authored
The "goto cleanup" path can deference "rswitch" when it is NULL. Reported-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
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Alexandre Bounine authored
Add RapidIO mport driver for IDT TSI721 PCI Express-to-SRIO bridge device. The driver provides full set of callback functions defined for mport devices in RapidIO subsystem. It also is compatible with current version of RIONET driver (Ethernet over RapidIO messaging services). This patch is applicable to kernel versions starting from 2.6.39. Signed-off-by:
Chul Kim <chul.kim@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Signed-off-by:
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Liu Gang authored
arch/powerpc/sysdev/fsl_rio.c: release rapidio port I/O region resource if port failed to initialize The "struct rio_mport" contains a member of master port I/O memory resource structure "struct resource iores". This resource will be read from device tree and be used for rapidio R/W transaction memory space. Rapidio requests the port I/O memory resource under the root resource "iomem_resource". struct rio_mport *port; port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL); request_resource(&iomem_resource, &port->iores); When port failed to initialize, allocated "rio_mport" structure memory will be freed, and the port I/O memory resource structure pointer "&port->iores" will be invalid. If other requests resource under "iomem_resource", "&port->iores" node may be operated in the child resources list and this will cause the system to crash. So the requested port I/O memory resource should be released before freeing allocated "rio_mport" structure. Signed-off-by:
Liu Gang <Gang.Liu@freescale.com> Acked-by:
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Liu Gang authored
The discovered bit in PGCCSR register indicates if the device has been discovered by system host. In Rapidio systems, some agent devices can also be master devices. They can issue requests into the system. Signed-off-by:
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Will Drewry authored
Expand root=PARTUUID=UUID syntax to support selecting a root partition by integer offset from a known, unique partition. This approach provides similar properties to specifying a device and partition number, but using the UUID as the unique path prior to evaluating the offset. For example, root=PARTUUID=99DE9194-FC15-4223-9192-FC243948F88B/PARTNROFF=1 selects the partition with UUID 99DE.. then select the next partition. This change is motivated by a particular usecase in Chromium OS where the bootloader can easily determine what partition it is on (by UUID) but doesn't perform general partition table walking. That said, support for this model provides a direct mechanism for the user to modify the root partition to boot without specifically needing to extract each UUID or update the bootloader explicitly when the root partition UUID is changed (if it is recreated to be larger, for instance). Pinning to a /boot-style partition UUID allows the arbitrary root partition reconfiguration/modifications with slightly less ambiguity than just [dev][partition] and less stringency than the specific root partition UUID. [sfr@canb.auug.org.au: fix init sections warning] Signed-off-by:
Will Drewry <wad@chromium.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Manfred Spraul authored
For the sysvsem undo, each task struct contains a sysv_sem structure with a pointer to the undo information. This pointer is only necessary if sysvipc is enabled - thus the pointer can be made conditional on CONFIG_SYSVIPC. Signed-off-by:
Manfred Spraul <manfred@colorfullife.com> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Galbraith <efault@gmx.de> Signed-off-by:
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Manfred Spraul authored
include/linux/sem.h contains several structures that are only used within ipc/sem.c. The patch moves them into ipc/sem.c - there is no need to expose the structures to the whole kernel. No functional changes, only whitespace cleanups and 80-char per line fixes. Signed-off-by:
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Manfred Spraul authored
semtimedop() does not handle spurious wakeups, it returns -EINTR to user space. Most other schedule() users would just loop and not return to user space. The patch adds such a loop to semtimedop() Signed-off-by:
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Manfred Spraul authored
sys_semtimedop() may return -EIDRM although the semaphore operation completed successfully: thread 1: thread 2: semtimedop(), sleeps semop(): * acquires sem_lock() semtimedop() woken up due to timeout sem_lock() loops * notices that thread 2 could be completed. * performs the operations that thread 2 is sleeping on. * marks the semaphore operation as IN_WAKEUP * drops sem_lock(), does wakeup, sets return code to 0 * thread delayed due to interrupt, whatever * returns to user space * thread still delayed semctl(IPC_RMID) * acquires sem_lock() * ipc_rmid(), ipcp->deleted=1 * drops sem_lock() * thread finally continues - but seem_lock() now fails due to ipcp->deleted == 1 * returns -EIDRM instead of 0 The fix is trivial: Always use the return code in queue.status. In real world, the race probably doesn't matter: If the semaphore array is destroyed, the app is probably not interested if the last operation succeeded or was already cancelled. Signed-off-by:
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Tejun Heo authored
It's often convenient to be able to release resource from IRQ context. Make ida_simple_*() use irqsave/restore spin ops so that they are IRQ safe. Signed-off-by:
Tejun Heo <tj@kernel.org> Acked-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Vasiliy Kulikov authored
fd* files are restricted to the task's owner, and other users may not get direct access to them. But one may open any of these files and run any setuid program, keeping opened file descriptors. As there are permission checks on open(), but not on readdir() and read(), operations on the kept file descriptors will not be checked. It makes it possible to violate procfs permission model. Reading fdinfo/* may disclosure current fds' position and flags, reading directory contents of fdinfo/ and fd/ may disclosure the number of opened files by the target task. This information is not sensible per se, but it can reveal some private information (like length of a password stored in a file) under certain conditions. Used existing (un)lock_trace functions to check for ptrace_may_access(), but instead of using EPERM return code from it use EACCES to be consistent with existing proc_pid_follow_link()/proc_pid_readlink() return code. If they differ, attacker can guess what fds exist by analyzing stat() return code. Patched handlers: stat() for fd/*, stat() and read() for fdindo/*, readdir() and lookup() for fd/ and fdinfo/. Signed-off-by:
Vasiliy Kulikov <segoon@openwall.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: <stable@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by:
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Pavel Emelyanov authored
On reading sysctl dirs we should return -EISDIR instead of -EINVAL. Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Signed-off-by:
Cyrill Gorcunov <gorcunov@openvz.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by:
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David Rientjes authored
{get,put}_mems_allowed() exist so that general kernel code may locklessly access a task's set of allowable nodes without having the chance that a concurrent write will cause the nodemask to be empty on configurations where MAX_NUMNODES > BITS_PER_LONG. This could incur a significant delay, however, especially in low memory conditions because the page allocator is blocking and reclaim requires get_mems_allowed() itself. It is not atypical to see writes to cpuset.mems take over 2 seconds to complete, for example. In low memory conditions, this is problematic because it's one of the most imporant times to change cpuset.mems in the first place! The only way a task's set of allowable nodes may change is through cpusets by writing to cpuset.mems and when attaching a task to a generic code is not reading the nodemask with get_mems_allowed() at the same time, and then clearing all the old nodes. This prevents the possibility that a reader will see an empty nodemask at the same time the writer is storing a new nodemask. If at least one node remains unchanged, though, it's possible to simply set all new nodes and then clear all the old nodes. Changing a task's nodemask is protected by cgroup_mutex so it's guaranteed that two threads are not changing the same task's nodemask at the same time, so the nodemask is guaranteed to be stored before another thread changes it and determines whether a node remains set or not. Signed-off-by:David Rientjes <rientjes@google.com> Cc: Miao Xie <miaox@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Paul Menage <paul@paulmenage.org> Signed-off-by:
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