- 16 9月, 2010 11 次提交
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由 Arnd Bergmann 提交于
Simple attribute files need to be seekable to allow resetting the file for another read. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
No need for seek here, so let's just use nonseekable_open. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
There does not seem to be a need for lirc to allow seeking on the file descriptor, so let's just disallow this before users start relying on it. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
Some applications try to seek on tape devices and fail if they return an error. Since we want to change the default llseek action to no_llseek, viotape needs to be changed to use noop_llseek explicitly. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
The raw_fops may need to seek, so there should be an explicit reference to default_llseek. raw_ctl_fops does not contain a read or write method, so we use noop_llseek to ignore seeking requests without an error. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
The default for llseek will change to no_llseek, so ibmasmfs needs to add explicit .llseek assignments. Since we're dealing with regular files from a VFS perspective, use generic_file_llseek. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
The default for llseek is changing, so we need explicit operations everywhere. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: linuxppc-dev@ozlabs.org
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由 Arnd Bergmann 提交于
In future kernels, debugfs files need to specify the llseek operation explicitly to allow seeking. This sets the llseek operation in the omap iommu debugfs files to generic_file_llseek, which is appropriate for files using simple_read_from_buffer. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Cc: Tony Lindgren <tony@atomide.com> Cc: linux-omap@vger.kernel.org
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由 Arnd Bergmann 提交于
When the default llseek behavior gets changed to not allowing seek, all file operations that rely on the current behaviour need to use an explicit .llseek operation. The files that lkdtm uses in debugfs are regular files and they get read using simple_read_from_buffer, so generic_file_llseek is the right operation. Signed-off-by: NArnd Bergmann <arnd@arndb.de>
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由 Arnd Bergmann 提交于
The default llseek operation is changing from default_llseek to no_llseek, so all code relying on the current behaviour needs to make that explicit. The wireless driver infrastructure and some of the drivers make use of generated debugfs files, so they cannot be converted by our script that automatically determines the right operation. All these files use debugfs and they typically rely on simple_read_from_buffer, so the best llseek operation here is generic_file_llseek. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Cc: "John W. Linville" <linville@tuxdriver.com> Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org
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由 Arnd Bergmann 提交于
The drm device drivers currently allow seeking on the character device but never care about the actual file position. When we change the default llseek operation to be no_llseek, calling llseek on a drm device would return an error condition, which is an API change. Explicitly setting noop_llseek lets us keep the current API. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Cc: David Airlie <airlied@linux.ie> Cc: dri-devel@lists.freedesktop.org
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- 13 9月, 2010 1 次提交
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由 Linus Torvalds 提交于
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- 12 9月, 2010 6 次提交
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由 Randy Dunlap 提交于
Fix docbook templates that reference files that do not contain the expected kernel-doc notation. Fixes these warnings: Warning(arch/x86/include/asm/unaligned.h): no structured comments found Warning(lib/vsprintf.c): no structured comments found These cause errors in the generated html output, like below, so drop these lines. Name arch/x86/include/asm/unaligned.h - Document generation inconsistency Oops Warning The template for this document tried to insert the structured comment from the file arch/x86/include/asm/unaligned.h at this point, but none was found. This dummy section is inserted to allow generation to continue. Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Berg 提交于
When you don't use !E or !I but only !F, then it's very easy to miss including some functions, structs etc. in documentation. To help finding which ones were missed, allow printing out the unused ones as warnings. For example, using this on mac80211 yields a lot of warnings like this: Warning: didn't use docs for DOC: mac80211 workqueue Warning: didn't use docs for ieee80211_max_queues Warning: didn't use docs for ieee80211_bss_change Warning: didn't use docs for ieee80211_bss_conf when generating the documentation for it. Signed-off-by: NJohannes Berg <johannes.berg@intel.com> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Berg 提交于
There are valid attributes that could have upper case letters, but we still want to remove, like for example __attribute__((aligned(NETDEV_ALIGN))) as encountered in the wireless code. Signed-off-by: NJohannes Berg <johannes.berg@intel.com> Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6由 Linus Torvalds 提交于
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / Hibernate: Avoid hitting OOM during preallocation of memory PM QoS: Correct pr_debug() misuse and improve parameter checks PM: Prevent waiting forever on asynchronous resume after failing suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] fix use-after-free in scsi_init_io() [SCSI] sd: fix medium-removal bug [SCSI] qla2xxx: Update version number to 8.03.04-k0. [SCSI] qla2xxx: Check for empty slot in request queue before posting Command type 6 request. [SCSI] qla2xxx: Cover UNDERRUN case where SCSI status is set. [SCSI] qla2xxx: Correctly set fw hung and complete only waiting mbx. [SCSI] qla2xxx: Reset seconds_since_last_heartbeat correctly. [SCSI] qla2xxx: make rport deletions explicit during vport removal [SCSI] qla2xxx: Fix vport delete issues [SCSI] sd, sym53c8xx: Remove warnings after vsprintf %pV introducation. [SCSI] Fix warning: zero-length gnu_printf format string [SCSI] hpsa: disable doorbell reset on reset_devices [SCSI] be2iscsi: Fix for Login failure [SCSI] fix bio.bi_rw handling
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由 Rafael J. Wysocki 提交于
There is a problem in hibernate_preallocate_memory() that it calls preallocate_image_memory() with an argument that may be greater than the total number of available non-highmem memory pages. If that's the case, the OOM condition is guaranteed to trigger, which in turn can cause significant slowdown to occur during hibernation. To avoid that, make preallocate_image_memory() adjust its argument before calling preallocate_image_pages(), so that the total number of saveable non-highem pages left is not less than the minimum size of a hibernation image. Change hibernate_preallocate_memory() to try to allocate from highmem if the number of pages allocated by preallocate_image_memory() is too low. Modify free_unnecessary_pages() to take all possible memory allocation patterns into account. Reported-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Tested-by: NM. Vefa Bicakci <bicave@superonline.com>
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- 11 9月, 2010 8 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (28 commits) ipheth: remove incorrect devtype to WWAN MAINTAINERS: Add CAIF sctp: fix test for end of loop KS8851: Correct RX packet allocation udp: add rehash on connect() net: blackhole route should always be recalculated ipv4: Suppress lockdep-RCU false positive in FIB trie (3) niu: Fix kernel buffer overflow for ETHTOOL_GRXCLSRLALL ipvs: fix active FTP gro: Re-fix different skb headrooms via-velocity: Turn scatter-gather support back off. ipv4: Fix reverse path filtering with multipath routing. UNIX: Do not loop forever at unix_autobind(). PATCH: b44 Handle RX FIFO overflow better (simplified) irda: off by one 3c59x: Fix deadlock in vortex_error() netfilter: discard overlapping IPv6 fragment ipv6: discard overlapping fragment net: fix tx queue selection for bridged devices implementing select_queue bonding: Fix jiffies overflow problems (again) ... Fix up trivial conflicts due to the same cgroup API thinko fix going through both Andrew and the networking tree. However, there were small differences between the two, with Andrew's version generally being the nicer one, and the one I merged first. So pick that one. Conflicts in: include/linux/cgroup.h and kernel/cgroup.c
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Kill all BKL usage.
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由 Linus Torvalds 提交于
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: x86, tsc: Fix a preemption leak in restore_sched_clock_state() sched: Move sched_avg_update() to update_cpu_load()
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由 Peter Zijlstra 提交于
Doh, a real life genuine preemption leak.. This caused a suspend failure. Reported-bisected-and-tested-by-the-invaluable: Jeff Chua <jeff.chua.linux@gmail.com> Acked-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Nico Schottelius <nico-linux-20100709@schottelius.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Florian Pritz <flo@xssn.at> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: <stable@kernel.org> # Greg, please apply after: cd7240c0 ("x86, tsc, sched: Recompute cyc2ns_offset's during resume from") sleep states LKML-Reference: <1284150773.402.122.camel@laptop> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel由 Linus Torvalds 提交于
* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: drm/i915: don't enable self-refresh on Ironlake drm/i915: Double check that the wait_request is not pending before warning Revert "drm/i915: Warn if we run out of FIFO space for a mode" Revert "drm/i915: Allow LVDS on pipe A on gen4+" Revert "drm/i915: Enable RC6 on Ironlake."
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git://oss.sgi.com/xfs/xfs由 Linus Torvalds 提交于
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: log IO completion workqueue is a high priority queue xfs: prevent reading uninitialized stack memory
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由 Peter Zijlstra 提交于
A real life genuine preemption leak.. Reported-and-tested-by: NJeff Chua <jeff.chua.linux@gmail.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 mark gross 提交于
Correct some pr_debug() misuse and add a stronger parameter check to pm_qos_write() for the ASCII hex value case. Thanks to Dan Carpenter for pointing out the problem! Signed-off-by: Nmark gross <markgross@thegnar.org> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 10 9月, 2010 14 次提交
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由 Dave Chinner 提交于
The workqueue implementation in 2.6.36-rcX has changed, resulting in the workqueues no longer having dedicated threads for work processing. This has caused severe livelocks under heavy parallel create workloads because the log IO completions have been getting held up behind metadata IO completions. Hence log commits would stall, memory allocation would stall because pages could not be cleaned, and lock contention on the AIL during inode IO completion processing was being seen to slow everything down even further. By making the log Io completion workqueue a high priority workqueue, they are queued ahead of all data/metadata IO completions and processed before the data/metadata completions. Hence the log never gets stalled, and operations needed to clean memory can continue as quickly as possible. This avoids the livelock conditions and allos the system to keep running under heavy load as per normal. Signed-off-by: NDave Chinner <dchinner@redhat.com> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAlex Elder <aelder@sgi.com>
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由 Roland McGrath 提交于
An execve with a very large total of argument/environment strings can take a really long time in the execve system call. It runs uninterruptibly to count and copy all the strings. This change makes it abort the exec quickly if sent a SIGKILL. Note that this is the conservative change, to interrupt only for SIGKILL, by using fatal_signal_pending(). It would be perfectly correct semantics to let any signal interrupt the string-copying in execve, i.e. use signal_pending() instead of fatal_signal_pending(). We'll save that change for later, since it could have user-visible consequences, such as having a timer set too quickly make it so that an execve can never complete, though it always happened to work before. Signed-off-by: NRoland McGrath <roland@redhat.com> Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Roland McGrath 提交于
This adds a preemption point during the copying of the argument and environment strings for execve, in copy_strings(). There is already a preemption point in the count() loop, so this doesn't add any new points in the abstract sense. When the total argument+environment strings are very large, the time spent copying them can be much more than a normal user time slice. So this change improves the interactivity of the rest of the system when one process is doing an execve with very large arguments. Signed-off-by: NRoland McGrath <roland@redhat.com> Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Roland McGrath 提交于
The CONFIG_STACK_GROWSDOWN variant of setup_arg_pages() does not check the size of the argument/environment area on the stack. When it is unworkably large, shift_arg_pages() hits its BUG_ON. This is exploitable with a very large RLIMIT_STACK limit, to create a crash pretty easily. Check that the initial stack is not too large to make it possible to map in any executable. We're not checking that the actual executable (or intepreter, for binfmt_elf) will fit. So those mappings might clobber part of the initial stack mapping. But that is just userland lossage that userland made happen, not a kernel problem. Signed-off-by: NRoland McGrath <roland@redhat.com> Reviewed-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: Perform hardware_enable in CPU_STARTING callback KVM: i8259: fix migration KVM: fix i8259 oops when no vcpus are online KVM: x86 emulator: fix regression with cmpxchg8b on i386 hosts
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由 Linus Torvalds 提交于
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: tracing: t_start: reset FTRACE_ITER_HASH in case of seek/pread perf symbols: Fix multiple initialization of symbol system perf: Fix CPU hotplug perf, trace: Fix module leak tracing/kprobe: Fix handling of C-unlike argument names tracing/kprobes: Fix handling of argument names perf probe: Fix handling of arguments names perf probe: Fix return probe support tracing/kprobe: Fix a memory leak in error case tracing: Do not allow llseek to set_ftrace_filter
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由 David Howells 提交于
Fix a bug in keyctl_session_to_parent() whereby it tries to check the ownership of the parent process's session keyring whether or not the parent has a session keyring [CVE-2010-2960]. This results in the following oops: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0 IP: [<ffffffff811ae4dd>] keyctl_session_to_parent+0x251/0x443 ... Call Trace: [<ffffffff811ae2f3>] ? keyctl_session_to_parent+0x67/0x443 [<ffffffff8109d286>] ? __do_fault+0x24b/0x3d0 [<ffffffff811af98c>] sys_keyctl+0xb4/0xb8 [<ffffffff81001eab>] system_call_fastpath+0x16/0x1b if the parent process has no session keyring. If the system is using pam_keyinit then it mostly protected against this as all processes derived from a login will have inherited the session keyring created by pam_keyinit during the log in procedure. To test this, pam_keyinit calls need to be commented out in /etc/pam.d/. Reported-by: NTavis Ormandy <taviso@cmpxchg8b.com> Signed-off-by: NDavid Howells <dhowells@redhat.com> Acked-by: NTavis Ormandy <taviso@cmpxchg8b.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Howells 提交于
There's an protected access to the parent process's credentials in the middle of keyctl_session_to_parent(). This results in the following RCU warning: =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- security/keys/keyctl.c:1291 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 1 lock held by keyctl-session-/2137: #0: (tasklist_lock){.+.+..}, at: [<ffffffff811ae2ec>] keyctl_session_to_parent+0x60/0x236 stack backtrace: Pid: 2137, comm: keyctl-session- Not tainted 2.6.36-rc2-cachefs+ #1 Call Trace: [<ffffffff8105606a>] lockdep_rcu_dereference+0xaa/0xb3 [<ffffffff811ae379>] keyctl_session_to_parent+0xed/0x236 [<ffffffff811af77e>] sys_keyctl+0xb4/0xb6 [<ffffffff81001eab>] system_call_fastpath+0x16/0x1b The code should take the RCU read lock to make sure the parents credentials don't go away, even though it's holding a spinlock and has IRQ disabled. Signed-off-by: NDavid Howells <dhowells@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.dk/linux-2.6-block由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: Range check cpu in blk_cpu_to_group scatterlist: prevent invalid free when alloc fails writeback: Fix lost wake-up shutting down writeback thread writeback: do not lose wakeup events when forking bdi threads cciss: fix reporting of max queue depth since init block: switch s390 tape_block and mg_disk to elevator_change() block: add function call to switch the IO scheduler from a driver fs/bio-integrity.c: return -ENOMEM on kmalloc failure bio-integrity.c: remove dependency on __GFP_NOFAIL BLOCK: fix bio.bi_rw handling block: put dev->kobj in blk_register_queue fail path cciss: handle allocation failure cfq-iosched: Documentation help for new tunables cfq-iosched: blktrace print per slice sector stats cfq-iosched: Implement tunable group_idle cfq-iosched: Do group share accounting in IOPS when slice_idle=0 cfq-iosched: Do not idle if slice_idle=0 cciss: disable doorbell reset on reset_devices blkio: Fix return code for mkdir calls
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git://github.com/at91linux/linux-2.6-at91由 Linus Torvalds 提交于
* 'at91-fixes-for-linus' of git://github.com/at91linux/linux-2.6-at91: AT91: at91sam9261ek: remove C99 comments but keep information AT91: at91sam9261ek board: remove warnings related to use of SPI or SD/MMC AT91: dm9000 initialization update AT91: SAM9G45 - add a separate clock entry for every single TC block AT91: clock: peripheral clocks can have other parent than mck AT91: change dma resource index
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: rawmidi: fix the get next midi device ioctl ALSA: hda - Fix wrong HP pin detection in snd_hda_parse_pin_def_config() ALSA: seq/oss - Fix double-free at error path of snd_seq_oss_open() ALSA: msnd-classic: Fix invalid cfg parameter ALSA: hda - Enable PC-beep for EeePC with ALC269 codec ALSA: hda - Add errata initverb sequence for CS42xx codecs ALSA: usb - Release capture substream URBs properly ALSA: virtuoso: fix setting of Xonar DS line-in/mic-in controls ALSA: virtuoso: work around missing reset in the Xonar DS Windows driver ALSA: hda - Add quirk for Lenovo T400s ALSA: usb-audio: fix detection of vendor-specific device protocol settings ALSA: usb-audio: Assume first control interface is for audio ALSA: hda - Add a new hp-laptop model for Conexant 5066, tested on HP G60
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由 Jesse Barnes 提交于
We don't know how to enable it safely, especially as outputs turn on and off. When disabling LP1 we also need to make sure LP2 and 3 are already disabled. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29173 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29082Reported-by: NChris Lord <chris@linux.intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org> Tested-by: NDaniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@kernel.org Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
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由 Dan Rosenberg 提交于
The XFS_IOC_FSGETXATTR ioctl allows unprivileged users to read 12 bytes of uninitialized stack memory, because the fsxattr struct declared on the stack in xfs_ioc_fsgetxattr() does not alter (or zero) the 12-byte fsx_pad member before copying it back to the user. This patch takes care of it. Signed-off-by: NDan Rosenberg <dan.j.rosenberg@gmail.com> Reviewed-by: NEric Sandeen <sandeen@redhat.com> Signed-off-by: NAlex Elder <aelder@sgi.com>
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由 Nicolas Ferre 提交于
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
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