- 23 Sep, 2010 12 commits
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Luke Macken authored
Enable the EFI framebuffer on 14 more Macs, including the iMac11,1 iMac10,1 iMac8,1 Macmini3,1 Macmini4,1 MacBook5,1 MacBook6,1 MacBook7,1 MacBookPro2,2 MacBookPro5,2 MacBookPro5,3 MacBookPro6,1 MacBookPro6,2 and MacBookPro7,1 Information gathered from various user submissions. https://bugzilla.redhat.com/show_bug.cgi?id=528232 http://ubuntuforums.org/showthread.php?t=1557326 [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:Luke Macken <lmacken@redhat.com> Signed-off-by:
Peter Jones <pjones@redhat.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Peter Jones authored
Some Apple machines have identical DMI data but different memory configurations for the video. Given that, check that the address in our table is actually within the range of a PCI BAR on a VGA device in the machine. This also fixes up the return value from set_system(), which has always been wrong, but never resulted in bad behavior since there's only ever been one matching entry in the dmi table. The patch 1) stops people's machines from crashing when we get their display wrong, which seems to be unfortunately inevitable, 2) allows us to support identical dmi data with differing video memory configurations This also adds me as the efifb maintainer, since I've effectively been acting as such for quite some time. Signed-off-by:
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Jan Kara authored
OCFS2 can return ERESTARTSYS from its write function when the process is signalled while waiting for a cluster lock (and the filesystem is mounted with intr mount option). Generally, it seems reasonable to allow filesystems to return this error code from its IO functions. As we must not leak ERESTARTSYS (and similar error codes) to userspace as a result of an AIO operation, we have to properly convert it to EINTR inside AIO code (restarting the syscall isn't really an option because other AIO could have been already submitted by the same io_submit syscall). Signed-off-by:
Jan Kara <jack@suse.cz> Reviewed-by:
Jeff Moyer <jmoyer@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Zach Brown <zach.brown@oracle.com> Cc: <stable@kernel.org> Signed-off-by:
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Minchan Kim authored
M. Vefa Bicakci reported 2.6.35 kernel hang up when hibernation on his 32bit 3GB mem machine. (https://bugzilla.kernel.org/show_bug.cgi?id=16771). Also he bisected the regression to commit bb21c7ce Author: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Date: Fri Jun 4 14:15:05 2010 -0700 vmscan: fix do_try_to_free_pages() return value when priority==0 reclaim failure At first impression, this seemed very strange because the above commit only chenged function return value and hibernate_preallocate_memory() ignore return value of shrink_all_memory(). But it's related. Now, page allocation from hibernation code may enter infinite loop if the system has highmem. The reasons are that vmscan don't care enough OOM case when oom_killer_disabled. The problem sequence is following as. 1. hibernation 2. oom_disable 3. alloc_pages 4. do_try_to_free_pages if (scanning_global_lru(sc) && !all_unreclaimable) return 1; If kswapd is not freozen, it would set zone->all_unreclaimable to 1 and then shrink_zones maybe return true(ie, all_unreclaimable is true). So at last, alloc_pages could go to _nopage_. If it is, it should have no problem. This patch adds all_unreclaimable check to protect in direct reclaim path, too. It can care of hibernation OOM case and help bailout all_unreclaimable case slightly. Signed-off-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
Minchan Kim <minchan.kim@gmail.com> Reported-by:
M. Vefa Bicakci <bicave@superonline.com> Reported-by: <caiqian@redhat.com> Reviewed-by:
Johannes Weiner <hannes@cmpxchg.org> Tested-by: <caiqian@redhat.com> Acked-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Rik van Riel <riel@redhat.com> Acked-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: <stable@kernel.org> Signed-off-by:
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Axel Lin authored
Otherwise, calling platform_get_drvdata() in ab3100_rtc_remove() returns NULL. Signed-off-by:
Axel Lin <axel.lin@gmail.com> Acked-by:
Wan ZongShun <mcuos.com@gmail.com> Acked-by:
Linus Walleij <linus.walleij@stericsson.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by:
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Hans-Christian Egtvedt authored
Alter the maintainer of the AVR32 architecture and the AVR32/AT32AP machine support to me. Haavard is moving on to new challenges, and we've found it better to transfer the maintainer part to me. I will have good contact with Haavard anyway. Signed-off-by:
Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by:
Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by:
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Dmitry Torokhov authored
In an effort to minimize customer confusion we want to unify naming convention for VMware-provided kernel modules. This change renames the balloon driver from vmware_ballon to vmw_balloon. We expect to follow this naming convention (vmw_<module_name>) for all modules that are part of mainline kernel and/or being distributed by VMware, with the sole exception of vmxnet3 driver (since the name of mainline driver happens to match with the name used in VMware Tools). Signed-off-by:
Dmitry Torokhov <dtor@vmware.com> Acked-by:
Bhavesh Davda <bhavesh@vmware.com> Signed-off-by:
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FUJITA Tomonori authored
This fixes the regression caused by the commit 6fee48cd ("dma-mapping: arm: use generic pci_set_dma_mask and pci_set_consistent_dma_mask"). ARM needs to clip the dma coherent mask for dmabounce devices. This restores the old trick. Note that strictly speaking, the DMA API doesn't allow architectures to do such but I'm not sure it's worth adding the new API to set the dma mask that allows architectures to clip it. Reported-by:
Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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Arnd Bergmann authored
Commit 73296bc6 ("procfs: Use generic_file_llseek in /proc/vmcore") broke seeking on /proc/vmcore. This changes it back to use default_llseek in order to restore the original behaviour. The problem with generic_file_llseek is that it only allows seeks up to inode->i_sb->s_maxbytes, which is zero on procfs and some other virtual file systems. We should merge generic_file_llseek and default_llseek some day and clean this up in a proper way, but for 2.6.35/36, reverting vmcore is the safer solution. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Reported-by:
CAI Qian <caiqian@redhat.com> Tested-by:
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Yinghai Lu authored
After d9e1b6c4 ("ipmi: fix ACPI detection with regspacing") we get [ 11.026326] ipmi_si: probing via ACPI [ 11.030019] ipmi_si 00:09: (null) regsize 1 spacing 1 irq 0 [ 11.035594] ipmi_si: Adding ACPI-specified kcs state machine on an old system with only one range for ipmi kcs range. Try to fix it by adding another res pointer. Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Signed-off-by:
Corey Minyard <cminyard@mvista.com> Signed-off-by:
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David Rientjes authored
A task's badness score is roughly a proportion of its rss and swap compared to the system's capacity. The scale ranges from 0 to 1000 with the highest score chosen for kill. Thus, this scale operates on a resolution of 0.1% of RAM + swap. Admin tasks are also given a 3% bonus, so the badness score of an admin task using 3% of memory, for example, would still be 0. It's possible that an exceptionally large number of tasks will combine to exhaust all resources but never have a single task that uses more than 0.1% of RAM and swap (or 3.0% for admin tasks). This patch ensures that the badness score of any eligible task is never 0 so the machine doesn't unnecessarily panic because it cannot find a task to kill. Signed-off-by:
David Rientjes <rientjes@google.com> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
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Dan Rosenberg authored
In 32-bit compatibility mode, the error handling for compat_do_readv_writev() may free an uninitialized pointer, potentially leading to all sorts of ugly memory corruption. This is reliably triggerable by unprivileged users by invoking the readv()/writev() syscalls with an invalid iovec pointer. The below patch fixes this to emulate the non-compat version. Introduced by commit b8373363 ("compat: factor out compat_rw_copy_check_uvector from compat_do_readv_writev") Signed-off-by:
Dan Rosenberg <dan.j.rosenberg@gmail.com> Cc: stable@kernel.org (2.6.35) Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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- 22 Sep, 2010 11 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Prevent no-handler signal syscall restart recursion. sparc: Don't mask signal when we can't setup signal frame. sparc64: Fix race in signal instruction flushing. sparc64: Support RAW perf events.
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Al Viro authored
Make sigreturn zero regs->trap, make do_signal() do the same on all paths. As it is, signal interrupting e.g. read() from fd 512 (== ERESTARTSYS) with another signal getting unblocked when the first handler finishes will lead to restart one insn earlier than it ought to. Same for multiple signals with in-kernel handlers interrupting that sucker at the same time. Same for multiple signals of any kind interrupting that sucker on 64bit... Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Acked-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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git://git.kernel.dk/linux-2.6-blockLinus Torvalds authored
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: bdi: Fix warnings in __mark_inode_dirty for /dev/zero and friends char: Mark /dev/zero and /dev/kmem as not capable of writeback bdi: Initialize noop_backing_dev_info properly cfq-iosched: fix a kernel OOPs when usb key is inserted block: fix blk_rq_map_kern bio direction flag cciss: freeing uninitialized data on error path
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Jan Kara authored
Inodes of devices such as /dev/zero can get dirty for example via utime(2) syscall or due to atime update. Backing device of such inodes (zero_bdi, etc.) is however unable to handle dirty inodes and thus __mark_inode_dirty complains. In fact, inode should be rather dirtied against backing device of the filesystem holding it. This is generally a good rule except for filesystems such as 'bdev' or 'mtd_inodefs'. Inodes in these pseudofilesystems are referenced from ordinary filesystem inodes and carry mapping with real data of the device. Thus for these inodes we have to use inode->i_mapping->backing_dev_info as we did so far. We distinguish these filesystems by checking whether sb->s_bdi points to a non-trivial backing device or not. Example: Assume we have an ext3 filesystem on /dev/sda1 mounted on /. There's a device inode A described by a path "/dev/sdb" on this filesystem. This inode will be dirtied against backing device "8:0" after this patch. bdev filesystem contains block device inode B coupled with our inode A. When someone modifies a page of /dev/sdb, it's B that gets dirtied and the dirtying happens against the backing device "8:16". Thus both inodes get filed to a correct bdi list. Cc: stable@kernel.org Signed-off-by:
Jens Axboe <jaxboe@fusionio.com>
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Jan Kara authored
These devices don't do any writeback but their device inodes still can get dirty so mark bdi appropriately so that bdi code does the right thing and files inodes to lists of bdi carrying the device inodes. Cc: stable@kernel.org Signed-off-by:
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Jan Kara authored
Properly initialize this backing dev info so that writeback code does not barf when getting to it e.g. via sb->s_bdi. Cc: stable@kernel.org Signed-off-by:
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David S. Miller authored
Explicitly clear the "in-syscall" bit when we have no signal handler and back up the program counters to back up the system call. Reported-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Don't invoke the signal handler tracehook in that situation either. Reported-by:
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git://git.fluff.org/bjdooks/linuxLinus Torvalds authored
* 'for-linus/i2c/2636-rc5' of git://git.fluff.org/bjdooks/linux: i2c-omap: Make sure i2c bus is free before setting it to idle
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Sage Weil authored
The lock structs are currently protected by the BKL, but are accessed by code in fs/locks.c and misc file system and DLM code. These stubs will allow all users to switch to the new interface before the implementation is changed to a spinlock. Acked-by:
Sage Weil <sage@newdream.net> Signed-off-by:
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Mathias Nyman authored
If the i2c bus receives an interrupt with both BB (bus busy) and ARDY (register access ready) statuses set during the tranfer of the last message the bus was put to idle while still busy. This caused bus to timeout. Signed-off-by:
Mathias Nyman <mathias.nyman@nokia.com> Acked-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Ben Dooks <ben-linux@fluff.org>
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- 21 Sep, 2010 14 commits
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Linus Torvalds authored
Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Fix nohz balance kick sched: Fix user time incorrectly accounted as system time on 32-bit
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Linus Torvalds authored
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hw breakpoints: Fix pid namespace bug x86: Fix instruction breakpoint encoding oprofile: Add Support for Intel CPU Family 6 / Model 22 (Intel Celeron 540) kprobes: Fix Kconfig dependency
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: ceph: select CRYPTO ceph: check mapping to determine if FILE_CACHE cap is used ceph: only send one flushsnap per cap_snap per mds session ceph: fix cap_snap and realm split ceph: stop sending FLUSHSNAPs when we hit a dirty capsnap ceph: correctly set 'follows' in flushsnap messages ceph: fix dn offset during readdir_prepopulate ceph: fix file offset wrapping at 4GB on 32-bit archs ceph: fix reconnect encoding for old servers ceph: fix pagelist kunmap tail ceph: fix null pointer deref on anon root dentry release
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git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intelLinus Torvalds authored
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: drm/i915: Hold a reference to the object whilst unbinding the eviction list drm/i915,agp/intel: Add second set of PCI-IDs for B43 drm/i915: Fix Sandybridge fence registers drm/i915/crt: Downgrade warnings for hotplug failures drm/i915: Ensure that the crtcinfo is populated during mode_fixup()
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: update comments to reflect LHCALL_LOAD_GDT_ENTRY. virtio: console: Prevent userspace from submitting NULL buffers virtio: console: Fix poll blocking even though there is data to read
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Suresh Siddha authored
There's a situation where the nohz balancer will try to wake itself: cpu-x is idle which is also ilb_cpu got a scheduler tick during idle and the nohz_kick_needed() in trigger_load_balance() checks for rq_x->nr_running which might not be zero (because of someone waking a task on this rq etc) and this leads to the situation of the cpu-x sending a kick to itself. And this can cause a lockup. Avoid this by not marking ourself eligible for kicking. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1284400941.2684.19.camel@sbsiddha-MOBL3.sc.intel.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Vivek Goyal authored
Mike reported a kernel crash when a usb key hotplug is performed while all kernel thrads are not in a root cgroup and are running in one of the child cgroups of blkio controller. BUG: unable to handle kernel NULL pointer dereference at 0000002c IP: [<c11c7b08>] cfq_get_queue+0x232/0x412 *pde = 00000000 Oops: 0000 [#1] PREEMPT last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.0/host3/scsi_host/host3/uevent [..] Pid: 30039, comm: scsi_scan_3 Not tainted 2.6.35.2-fg.roam #1 Volvi2 /Aspire 4315 EIP: 0060:[<c11c7b08>] EFLAGS: 00010086 CPU: 0 EIP is at cfq_get_queue+0x232/0x412 EAX: f705f9c0 EBX: e977abac ECX: 00000000 EDX: 00000000 ESI: f00da400 EDI: f00da4ec EBP: e977a800 ESP: dff8fd00 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process scsi_scan_3 (pid: 30039, ti=dff8e000 task=f6b6c9a0 task.ti=dff8e000) Stack: 00000000 00000000 00000001 01ff0000 f00da508 00000000 f00da524 f00da540 <0> e7994940 dd631750 f705f9c0 e977a820 e977ac44 f00da4d0 00000001 f6b6c9a0 <0> 00000010 00008010 0000000b 00000000 00000001 e977a800 dd76fac0 00000246 Call Trace: [<c11c7f10>] ? cfq_set_request+0x228/0x34c [<c11c7ce8>] ? cfq_set_request+0x0/0x34c [<c11bb3b9>] ? elv_set_request+0xf/0x1c [<c11bdd51>] ? get_request+0x1ad/0x22f [<c11bddf2>] ? get_request_wait+0x1f/0x11a [<c11d013b>] ? kvasprintf+0x33/0x3b [<c127b537>] ? scsi_execute+0x1d/0x103 [<c127b675>] ? scsi_execute_req+0x58/0x83 [<c127c391>] ? scsi_probe_and_add_lun+0x188/0x7c2 [<c12718c6>] ? attribute_container_add_device+0x15/0xfa [<c11c95d1>] ? kobject_get+0xf/0x13 [<c126d1db>] ? get_device+0x10/0x14 [<c127be93>] ? scsi_alloc_target+0x217/0x24d [<c127cbd8>] ? __scsi_scan_target+0x95/0x480 [<c10204eb>] ? dequeue_entity+0x14/0x1fe [<c1020491>] ? update_curr+0x165/0x1ab [<c1020491>] ? update_curr+0x165/0x1ab [<c127d00d>] ? scsi_scan_channel+0x4a/0x76 [<c127d0b0>] ? scsi_scan_host_selected+0x77/0xad [<c127d13c>] ? do_scan_async+0x0/0x11a [<c127d137>] ? do_scsi_scan_host+0x51/0x56 [<c127d13c>] ? do_scan_async+0x0/0x11a [<c127d14a>] ? do_scan_async+0xe/0x11a [<c127d13c>] ? do_scan_async+0x0/0x11a [<c10354c5>] ? kthread+0x5e/0x63 [<c1035467>] ? kthread+0x0/0x63 [<c1002af6>] ? kernel_thread_helper+0x6/0x10 Code: 44 24 1c 54 83 44 24 18 54 83 fa 03 75 94 8b 06 c7 86 64 02 00 00 01 00 00 00 83 e0 03 09 f0 89 06 8b 44 24 28 8b 90 58 01 00 00 <8b> 42 2c 85 c0 75 03 8b 42 08 8d 54 24 48 52 8d 4c 24 50 51 68 EIP: [<c11c7b08>] cfq_get_queue+0x232/0x412 SS:ESP 0068:dff8fd00 CR2: 000000000000002c ---[ end trace 9a88306573f69b12 ]--- The problem here is that we don't have bdi->dev information available when thread does some IO. Hence when dev_name() tries to access bdi->dev, it crashes. This problem does not happen if kernel threads are in root group as root group is statically allocated at device initialization time and we don't hit this piece of code. Fix it by delaying the filling of major and minor number information of device in blk_group. Initially a blk_group is created with 0 as device information and this information is filled later once some more IO comes in from same group. Reported-by:
Mike Kazantsev <mk.fraggod@gmail.com> Signed-off-by:
Vivek Goyal <vgoyal@redhat.com> Signed-off-by:
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Benny Halevy authored
This bug was introduced in 7b6d91da "block: unify flags for struct bio and struct request" Cc: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by:
Benny Halevy <bhalevy@panasas.com> Signed-off-by:
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Dan Carpenter authored
The "h->scatter_list" is allocated inside a for loop. If any of those allocations fail, then the rest of the list is uninitialized data. When we free it we should start from the top and free backwards so that we don't call kfree() on uninitialized pointers. Also if the allocation for "h->scatter_list" fails then we would get an Oops here. I should have noticed this when I send: 4ee69851 "cciss: handle allocation failure." but I didn't. Sorry about that. Signed-off-by:
Dan Carpenter <error27@gmail.com> Signed-off-by:
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Chris Wilson authored
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David S. Miller authored
If another cpu does a very wide munmap() on the signal frame area, it can tear down the page table hierarchy from underneath us. Borrow an idea from the 64-bit fault path's get_user_insn(), and disable cross call interrupts during the page table traversal to lock them in place while we operate. Reported-by:
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Rusty Russell authored
We used to have a hypercall which reloaded the entire GDT, then we switched to one which loaded a single entry (to match the IDT code). Some comments were not updated, so fix them. Signed-off-by:Rusty Russell <rusty@rustcorp.com.au> Reported by: Eviatar Khen <eviatarkhen@gmail.com>
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Amit Shah authored
A userspace could submit a buffer with 0 length to be written to the host. Prevent such a situation. This was not needed previously, but recent changes in the way write() works exposed this condition to trigger a virtqueue event to the host, causing a NULL buffer to be sent across. Signed-off-by:
Amit Shah <amit.shah@redhat.com> Signed-off-by:
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Hans de Goede authored
I found this while working on a Linux agent for spice, the symptom I was seeing was select blocking on the spice vdagent virtio serial port even though there were messages queued up there. virtio_console's port_fops_poll checks port->inbuf != NULL to determine if read won't block. However if an application reads enough bytes from inbuf through port_fops_read, to empty the current port->inbuf, port->inbuf will be NULL even though there may be buffers left in the virtqueue. This causes poll() to block even though there is data to be read, this patch fixes this by using will_read_block(port) instead of the port->inbuf != NULL check. Signed-off-By:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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- 20 Sep, 2010 3 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: Staging: vt6655: fix buffer overflow Revert: "Staging: batman-adv: Adding netfilter-bridge hooks"
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: USB: musb: MAINTAINERS: Fix my mail address USB: serial/mos*: prevent reading uninitialized stack memory USB: otg: twl4030: fix phy initialization(v1) USB: EHCI: Disable langwell/penwell LPM capability usb: musb_debugfs: don't use the struct file private_data field with seq_files
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