summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2012-10-24LOCKD: fix races in nsm_client_getTrond Myklebust
Commit e9406db20fecbfcab646bad157b4cfdc7cadddfb (lockd: per-net NSM client creation and destruction helpers introduced) contains a nasty race on initialisation of the per-net NSM client because it doesn't check whether or not the client is set after grabbing the nsm_create_mutex. Reported-by: Nix <nix@esperi.org.uk> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
2012-10-24SUNRPC: Get rid of the xs_error_report socket callbackTrond Myklebust
Chris Perl reports that we're seeing races between the wakeup call in xs_error_report and the connect attempts. Basically, Chris has shown that in certain circumstances, the call to xs_error_report causes the rpc_task that is responsible for reconnecting to wake up early, thus triggering a disconnect and retry. Since the sk->sk_error_report() calls in the socket layer are always followed by a tcp_done() in the cases where we care about waking up the rpc_tasks, just let the state_change callbacks take responsibility for those wake ups. Reported-by: Chris Perl <chris.perl@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org Tested-by: Chris Perl <chris.perl@gmail.com>
2012-10-24SUNRPC: Prevent races in xs_abort_connection()Trond Myklebust
The call to xprt_disconnect_done() that is triggered by a successful connection reset will trigger another automatic wakeup of all tasks on the xprt->pending rpc_wait_queue. In particular it will cause an early wake up of the task that called xprt_connect(). All we really want to do here is clear all the socket-specific state flags, so we split that functionality out of xs_sock_mark_closed() into a helper that can be called by xs_abort_connection() Reported-by: Chris Perl <chris.perl@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org Tested-by: Chris Perl <chris.perl@gmail.com>
2012-10-24Revert "SUNRPC: Ensure we close the socket on EPIPE errors too..."Trond Myklebust
This reverts commit 55420c24a0d4d1fce70ca713f84aa00b6b74a70e. Now that we clear the connected flag when entering TCP_CLOSE_WAIT, the deadlock described in this commit is no longer possible. Instead, the resulting call to xs_tcp_shutdown() can interfere with pending reconnection attempts. Reported-by: Chris Perl <chris.perl@gmail.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org Tested-by: Chris Perl <chris.perl@gmail.com>
2012-10-24SUNRPC: Clear the connect flag when socket state is TCP_CLOSE_WAITTrond Myklebust
This is needed to ensure that we call xprt_connect() upon the next call to call_connect(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org Tested-by: Chris Perl <chris.perl@gmail.com>
2012-10-24Merge tag 'stable/for-linus-3.7-rc2-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull xen bug-fixes from Konrad Rzeszutek Wilk: - Fix mysterious SIGSEGV or SIGKILL in applications due to corrupting of the %eip when returning from a signal handler. - Fix various ARM compile issues after the merge fallout. - Continue on making more of the Xen generic code usable by ARM platform. - Fix SR-IOV passthrough to mirror multifunction PCI devices. - Fix various compile warnings. - Remove hypercalls that don't exist anymore. * tag 'stable/for-linus-3.7-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: dbgp: Fix warning when CONFIG_PCI is not enabled. xen: arm: comment on why 64-bit xen_pfn_t is safe even on 32 bit xen: balloon: use correct type for frame_list xen/x86: don't corrupt %eip when returning from a signal handler xen: arm: make p2m operations NOPs xen: balloon: don't include e820.h xen: grant: use xen_pfn_t type for frame_list. xen: events: pirq_check_eoi_map is X86 specific xen: XENMEM_translate_gpfn_list was remove ages ago and is unused. xen: sysfs: fix build warning. xen: sysfs: include err.h for PTR_ERR etc xen: xenbus: quirk uses x86 specific cpuid xen PV passthru: assign SR-IOV virtual functions to separate virtual slots xen/xenbus: Fix compile warning. xen/x86: remove duplicated include from enlighten.c
2012-10-24alpha: separate thread-synchronous flagsAl Viro
... and fix the race in updating unaligned control ones Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-24Merge tag 'kvm-3.7-2' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm fixes from Avi Kivity: "KVM updates for 3.7-rc2" * tag 'kvm-3.7-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM guest: exit idleness when handling KVM_PV_REASON_PAGE_NOT_PRESENT KVM: apic: fix LDR calculation in x2apic mode KVM: MMU: fix release noslot pfn
2012-10-24Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Most of these are uprobes race fixes from Oleg, and their preparatory cleanups. (It's larger than what I'd normally send for an -rc kernel, but they looked significant enough to not delay them.) There's also an oprofile fix and an uncore PMU fix." * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits) perf/x86: Disable uncore on virtualized CPUs oprofile, x86: Fix wrapping bug in op_x86_get_ctrl() ring-buffer: Check for uninitialized cpu buffer before resizing uprobes: Fix the racy uprobe->flags manipulation uprobes: Fix prepare_uprobe() race with itself uprobes: Introduce prepare_uprobe() uprobes: Fix handle_swbp() vs unregister() + register() race uprobes: Do not delete uprobe if uprobe_unregister() fails uprobes: Don't return success if alloc_uprobe() fails uprobes/x86: Only rep+nop can be emulated correctly uprobes: Simplify is_swbp_at_addr(), remove stale comments uprobes: Kill set_orig_insn()->is_swbp_at_addr() uprobes: Introduce copy_opcode(), kill read_opcode() uprobes: Kill set_swbp()->is_swbp_at_addr() uprobes: Restrict valid_vma(false) to skip VM_SHARED vmas uprobes: Change valid_vma() to demand VM_MAYEXEC rather than VM_EXEC uprobes: Change write_opcode() to use FOLL_FORCE uprobes: Move clear_thread_flag(TIF_UPROBE) to uprobe_notify_resume() uprobes: Kill UTASK_BP_HIT state uprobes: Fix UPROBE_SKIP_SSTEP checks in handle_swbp() ...
2012-10-24Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core kernel fixes from Ingo Molnar: "Two small fixes" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation: Reflect the new location of the NMI watchdog info nohz: Fix idle ticks in cpu summary line of /proc/stat
2012-10-24Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 fixes from Martin Schwidefsky: "Among the usual minor bug fixes the more interesting patches are the perf counters for the latest machine, the missing select to enable transparent huge pages and a build fix for the UAPI rework." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390,uapi: do not use uapi/asm-generic/kvm_para.h s390/cache: fix data/instruction cache output s390: fix linker script for 31 bit builds s390/thp: select HAVE_ARCH_TRANSPARENT_HUGEPAGE s390/kdump: Use 64 bit mode for 0x10000 entry point perf_cpum_cf: Add support for counters available with IBM zEC12 s390/css: stop stsch loop after cc 3 s390/cio: use generic bitmap functions s390/chpid: make headers usable (again)
2012-10-24Merge branch 'stable' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull tile fixes from Chris Metcalf: "This fixes one issue with compiler flags that can cause modules not to load, and cleans up some warnings with ELF_R_xxx defines." * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: avoid build warnings from duplicate ELF_R_xxx #defines arch/tile: avoid generating .eh_frame information in modules
2012-10-24Merge tag 'please-pull-uapi-fix' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull ia64 fix from Tony Luck: "Fix from dhowells for UAPI fallout" * tag 'please-pull-uapi-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: UAPI: Make arch/ia64/include/asm/kvm_para.h generic
2012-10-23arch/tile: avoid build warnings from duplicate ELF_R_xxx #definesChris Metcalf
These are now provided in <asm-generic/module.h>, so clean up warnings by not re-defining them in module.c. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au>
2012-10-23arch/tile: avoid generating .eh_frame information in modulesChris Metcalf
The tile tool chain uses the .eh_frame information for backtracing. The vmlinux build drops any .eh_frame sections at link time, but when present in kernel modules, it causes a module load failure due to the presence of unsupported pc-relative relocations. When compiling to use compiler feedback support, the compiler by default omits .eh_frame information, so we don't see this problem. But when not using feedback, we need to explicitly suppress the .eh_frame. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> Cc: stable@vger.kernel.org
2012-10-23Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Fixes for intel and nouveau mainly. - intel: disable HSW by default, sdvo fixes, link train regression fix - nouveau: acpi rom loading regression fix, with a few other fixes from the rework -core: just other minor fixes and race fixes for ttm." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (24 commits) drm/ttm: Fix a theoretical race in ttm_bo_cleanup_refs() drm/ttm: Fix a theoretical race drm: platform: Don't initialize driver-private data drm/debugfs: remove redundant info from gem_names drm: fb: cma: Fail gracefully on allocation failure drm: fb: cma: Fix typo in debug message drm/nouveau/clock: fix missing pll type/addr when matching default entry drm/nouveau/fb: fix reporting of memory type on GF8+ IGPs drm/nv41/vm: don't init hw pciegart on boards with agp bridge drm/nouveau/bios: fetch full 4KiB block to determine ACPI ROM image size drm/nouveau: validate vbios size drm/nouveau: warn when trying to free mm which is still in use drm/nouveau: fix nouveau_mm/nouveau_mm_node leak drm/nouveau/bios: improve error handling when reading the vbios from ACPI drm/nouveau: handle same-fb page flips drm/i915: Initialize obj->pages before use by i915_gem_object_do_bit17_swizzle() drm/i915: Add no-lvds quirk for Supermicro X7SPA-H drm/i915: Insert i915_preliminary_hw_support variable. drm/i915: shut up spurious WARN in the gtt fault handler Revert "drm/i915: Try harder to complete DP training pattern 1" ...
2012-10-23Merge tag 'jfs-3.7-2' of git://github.com/kleikamp/linux-shaggyLinus Torvalds
Pull jfs fix from Dave Kleikamp: "Bug fix: Fix FITRIM argument handling" * tag 'jfs-3.7-2' of git://github.com/kleikamp/linux-shaggy: jfs: Fix FITRIM argument handling
2012-10-23Merge tag 'ext4_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 fixes from Ted Ts'o: "Various bug fixes for ext4. The most serious of them fixes a security bug (CVE-2012-4508) which leads to stale data exposure when we have fallocate racing against writes to files undergoing delayed allocation. We also have two fixes for the metadata checksum feature, the most serious of which can cause the superblock to have a invalid checksum after a power failure." * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: Avoid underflow in ext4_trim_fs() ext4: Checksum the block bitmap properly with bigalloc enabled ext4: fix undefined bit shift result in ext4_fill_flex_info ext4: fix metadata checksum calculation for the superblock ext4: race-condition protection for ext4_convert_unwritten_extents_endio ext4: serialize fallocate with ext4_convert_unwritten_extents
2012-10-23Merge tag 'nfs-for-3.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client bugfixes from Trond Myklebust: - Do not call pnfs_return_layout() from an rpciod context - nfs4_ds_disconnect can cause Oopses. Kill it... - Fix the return value for nfs_callback_start_svc - Fix a number of compile warnings * tag 'nfs-for-3.7-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Fix the return value for nfs_callback_start_svc NFSv4.1: Declare osd_pri_2_pnfs_err(), objio_init_read/write to be static NFSv4: fs/nfs/nfs4getroot.c needs to include "internal.h" NFSv4.1: Use kcalloc() to allocate zeroed arrays instead of kzalloc() NFSv4.1: Do not call pnfs_return_layout() from an rpciod context NFSv4.1: Kill nfs4_ds_disconnect()
2012-10-23Merge tag 'regmap-fix-mmio' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fix from Mark Brown: "regmap: Fix for dependencies for MMIO Trivial dependency issue, not noticed before as the only user of MMIO also needs I2C." * tag 'regmap-fix-mmio' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: select REGMAP if REGMAP_MMIO and REGMAP_IRQ enabled
2012-10-23drm/ttm: Fix a theoretical race in ttm_bo_cleanup_refs()Thomas Hellstrom
In theory, that function could release the lru lock between checking for bo on ddestroy list and a successful reserve if the bo was already reserved, and the function was called with waiting reserves allowed. However, all current reservers of a bo on the ddestroy list would atomically take the bo off the list after a successful reserve so this race should not have been hit, so no need to backport for stable. This patch also fixes a case found by Maarten Lankhorst where ttm_mem_evict_first called with no_wait_gpu would incorrectly spin waiting for bo idle if trying to evict a busy buffer that also sits on the ddestroy list. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-23drm/ttm: Fix a theoretical raceThomas Hellstrom
The ttm_mem_evict_first function could theoretically drop the lru lock without retrying if a reservation from off the LRU list ended up waiting. However, since currently there are no users that could cause a wait in that situation so this is not suitable for stable Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-23drm: platform: Don't initialize driver-private dataThierry Reding
Platform device drivers usually use the driver-private data for their own purposes. Having it overwritten by drm_platform_init() is confusing and error-prone. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-23drm/debugfs: remove redundant info from gem_namesMarcin Slusarz
It's a relic of "drm: Convert proc files to seq_file and introduce debugfs", which wrongly converted DRM_INFO + sprintf to 2 seq_printfs. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Ben Gamari <bgamari@gmail.com> Cc: Eric Anholt <eric@anholt.net> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-23drm: fb: cma: Fail gracefully on allocation failureThierry Reding
The drm_gem_cma_create() function never returns NULL but rather an error encoded in the return value using the ERR_PTR() macro. Callers therefore need to check for errors using the IS_ERR() macro. This change allows drivers to handle contiguous DMA allocation failures gracefully. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-23drm: fb: cma: Fix typo in debug messageThierry Reding
The debug message showing the resolution of a framebuffer to be allocated is missing a closing parenthesis. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-22ext4: Avoid underflow in ext4_trim_fs()Lukas Czerner
Currently if len argument in ext4_trim_fs() is smaller than one block, the 'end' variable underflow. Avoid that by returning EINVAL if len is smaller than file system block. Also remove useless unlikely(). Signed-off-by: Lukas Czerner <lczerner@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@vger.kernel.org
2012-10-22KVM guest: exit idleness when handling KVM_PV_REASON_PAGE_NOT_PRESENTSasha Levin
KVM_PV_REASON_PAGE_NOT_PRESENT kicks cpu out of idleness, but we haven't marked that spot as an exit from idleness. Not doing so can cause RCU warnings such as: [ 732.788386] =============================== [ 732.789803] [ INFO: suspicious RCU usage. ] [ 732.790032] 3.7.0-rc1-next-20121019-sasha-00002-g6d8d02d-dirty #63 Tainted: G W [ 732.790032] ------------------------------- [ 732.790032] include/linux/rcupdate.h:738 rcu_read_lock() used illegally while idle! [ 732.790032] [ 732.790032] other info that might help us debug this: [ 732.790032] [ 732.790032] [ 732.790032] RCU used illegally from idle CPU! [ 732.790032] rcu_scheduler_active = 1, debug_locks = 1 [ 732.790032] RCU used illegally from extended quiescent state! [ 732.790032] 2 locks held by trinity-child31/8252: [ 732.790032] #0: (&rq->lock){-.-.-.}, at: [<ffffffff83a67528>] __schedule+0x178/0x8f0 [ 732.790032] #1: (rcu_read_lock){.+.+..}, at: [<ffffffff81152bde>] cpuacct_charge+0xe/0x200 [ 732.790032] [ 732.790032] stack backtrace: [ 732.790032] Pid: 8252, comm: trinity-child31 Tainted: G W 3.7.0-rc1-next-20121019-sasha-00002-g6d8d02d-dirty #63 [ 732.790032] Call Trace: [ 732.790032] [<ffffffff8118266b>] lockdep_rcu_suspicious+0x10b/0x120 [ 732.790032] [<ffffffff81152c60>] cpuacct_charge+0x90/0x200 [ 732.790032] [<ffffffff81152bde>] ? cpuacct_charge+0xe/0x200 [ 732.790032] [<ffffffff81158093>] update_curr+0x1a3/0x270 [ 732.790032] [<ffffffff81158a6a>] dequeue_entity+0x2a/0x210 [ 732.790032] [<ffffffff81158ea5>] dequeue_task_fair+0x45/0x130 [ 732.790032] [<ffffffff8114ae29>] dequeue_task+0x89/0xa0 [ 732.790032] [<ffffffff8114bb9e>] deactivate_task+0x1e/0x20 [ 732.790032] [<ffffffff83a67c29>] __schedule+0x879/0x8f0 [ 732.790032] [<ffffffff8117e20d>] ? trace_hardirqs_off+0xd/0x10 [ 732.790032] [<ffffffff810a37a5>] ? kvm_async_pf_task_wait+0x1d5/0x2b0 [ 732.790032] [<ffffffff83a67cf5>] schedule+0x55/0x60 [ 732.790032] [<ffffffff810a37c4>] kvm_async_pf_task_wait+0x1f4/0x2b0 [ 732.790032] [<ffffffff81139e50>] ? abort_exclusive_wait+0xb0/0xb0 [ 732.790032] [<ffffffff81139c25>] ? prepare_to_wait+0x25/0x90 [ 732.790032] [<ffffffff810a3a66>] do_async_page_fault+0x56/0xa0 [ 732.790032] [<ffffffff83a6a6e8>] async_page_fault+0x28/0x30 Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Acked-by: Gleb Natapov <gleb@redhat.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-10-22KVM: apic: fix LDR calculation in x2apic modeGleb Natapov
Signed-off-by: Gleb Natapov <gleb@redhat.com> Reviewed-by: Chegu Vinod <chegu_vinod@hp.com> Tested-by: Chegu Vinod <chegu_vinod@hp.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-10-22KVM: MMU: fix release noslot pfnXiao Guangrong
We can not directly call kvm_release_pfn_clean to release the pfn since we can meet noslot pfn which is used to cache mmio info into spte Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: stable@vger.kernel.org Signed-off-by: Avi Kivity <avi@redhat.com>
2012-10-22Merge branch 'drm-nouveau-fixes' of ↵Dave Airlie
git://git.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes Fixes from Ben, off note: ACPI ROM regression fix, some IGP and AGP regressions fixes from rework fallout. * 'drm-nouveau-fixes' of git://git.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau/clock: fix missing pll type/addr when matching default entry drm/nouveau/fb: fix reporting of memory type on GF8+ IGPs drm/nv41/vm: don't init hw pciegart on boards with agp bridge drm/nouveau/bios: fetch full 4KiB block to determine ACPI ROM image size drm/nouveau: validate vbios size drm/nouveau: warn when trying to free mm which is still in use drm/nouveau: fix nouveau_mm/nouveau_mm_node leak drm/nouveau/bios: improve error handling when reading the vbios from ACPI drm/nouveau: handle same-fb page flips
2012-10-22module_signing: fix printk format warningRandy Dunlap
Fix the warning: kernel/module_signing.c:195:2: warning: format '%lu' expects type 'long unsigned int', but argument 3 has type 'size_t' by using the proper 'z' modifier for printing a size_t. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull m68k updates from Geert Uytterhoeven: "Just the expected UAPI disintegration and the "new" kcmp syscall." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Wire up kcmp m68k: Remove empty #ifdef/#else/#endif block UAPI: (Scripted) Disintegrate arch/m68k/include/asm
2012-10-22Input: fix use-after-free introduced with dynamic minor changesDmitry Torokhov
Commit 7f8d4cad1e4e ("Input: extend the number of event (and other) devices") made evdev, joydev and mousedev to embed struct cdev into their respective structures representing input devices. Unfortunately character device structure may outlive the parent structure unless we do not set it up as parent of character device so that it will stay pinned until character device is freed. Also, now that parent structure is pinned while character device exists we do not need to pin and unpin it every time user opens or closes it. Reported-by: Dave Jones <davej@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-22char_dev: pin parent kobjectDmitry Torokhov
In certain cases (for example when a cdev structure is embedded into another object whose lifetime is controlled by a separate kobject) it is beneficial to tie lifetime of another object to the lifetime of character device so that related object is not freed until after char_dev object is freed. To achieve this let's pin kobject's parent when doing cdev_add() and unpin when last reference to cdev structure is being released. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-22drm/nouveau/clock: fix missing pll type/addr when matching default entryBen Skeggs
This issue is a regression from 70790f4f819875e8f390871fd15bbbf823f28e1b, and causes us to miss a special-case for C51 (NV4E) chipsets and return the wrong reference frequency for the VPLLs. Should fix fdo#56202 Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22ext4: Checksum the block bitmap properly with bigalloc enabledTao Ma
In mke2fs, we only checksum the whole bitmap block and it is right. While in the kernel, we use EXT4_BLOCKS_PER_GROUP to indicate the size of the checksumed bitmap which is wrong when we enable bigalloc. The right size should be EXT4_CLUSTERS_PER_GROUP and this patch fixes it. Also as every caller of ext4_block_bitmap_csum_set and ext4_block_bitmap_csum_verify pass in EXT4_BLOCKS_PER_GROUP(sb)/8, we'd better removes this parameter and sets it in the function itself. Signed-off-by: Tao Ma <boyu.mt@taobao.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Lukas Czerner <lczerner@redhat.com> Cc: stable@vger.kernel.org
2012-10-22drm/nouveau/fb: fix reporting of memory type on GF8+ IGPsBen Skeggs
Purely a cosmetic issue at this point. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nv41/vm: don't init hw pciegart on boards with agp bridgeBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nouveau/bios: fetch full 4KiB block to determine ACPI ROM image sizeBen Skeggs
Buggy firmware leads to bad things happening otherwise.. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nouveau: validate vbios sizeMarcin Slusarz
Without checking, we could detect vbios size as 0, allocate 0-byte array (kmalloc returns invalid pointer for such allocation) and crash in nouveau_bios_score while checking for vbios signature. Reported-by: Heinz Diehl <htd@fritha.org> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nouveau: warn when trying to free mm which is still in useMarcin Slusarz
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nouveau: fix nouveau_mm/nouveau_mm_node leakMarcin Slusarz
v2: use already existing parent Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nouveau/bios: improve error handling when reading the vbios from ACPIMartin Peres
Reported-by: Pawel Sikora <pawel.sikora@agmk.net> Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-22drm/nouveau: handle same-fb page flipsMarcin Slusarz
It's questionable use case, but weston/wayland already relies on this behaviour, and other drivers don't care about it, so it's a matter of compatibility. Without it, process invoking such page flip hangs in unkillable state, trying to reserve the same buffer twice. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-10-21Merge branch 'drm-intel-fixes' of ↵Dave Airlie
git://people.freedesktop.org/~danvet/drm-intel into drm-fixes Daniel writes: The big thing is the disabling of the hsw support by default, cc: stable. We've aimed for basic hsw support in 3.6, but due to a few bad happenstances we've screwed up and only 3.8 will have better modeset support than vesa. To avoid yet another round of fallout from such a gaffle on for the next platform we've added a module option to disable early hw support by default. That should also give us more flexibility in bring-up. Otherwise just small fixes: - 3 fixes from Egbert for sdvo corner cases - invert-brightness quirk entry from Egbert - revert a dp link training change, it regresses some setups - and shut up a spurious WARN in our gem fault handler. - regression fix for an oops on bit17 swizzling machines, introduce in 3.7 - another no-lvds quirk * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: Initialize obj->pages before use by i915_gem_object_do_bit17_swizzle() drm/i915: Add no-lvds quirk for Supermicro X7SPA-H drm/i915: Insert i915_preliminary_hw_support variable. drm/i915: shut up spurious WARN in the gtt fault handler Revert "drm/i915: Try harder to complete DP training pattern 1" DRM/i915: Restore sdvo_flags after dtd->mode->dtd Roundrtrip. DRM/i915: Don't clone SDVO LVDS with analog. DRM/i915: Add QUIRK_INVERT_BRIGHTNESS for NCR machines. DRM/i915: Don't delete DPLL Multiplier during DAC init.
2012-10-21Merge branch 'tip/perf/urgent' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent Pull ftrace ring-buffer resizing fix from Steve Rostedt. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-10-21Documentation: Reflect the new location of the NMI watchdog infoJean Delvare
Commit 9919cba7 ("watchdog: Update documentation") moved the NMI watchdog documentation from nmi_watchdog.txt to lockup-watchdogs.txt. Update the index file accordingly. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/20121021120551.4656d99b@endymion.delvare Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-10-21Merge branch 'uprobes/core' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/urgent Pull various uprobes bugfixes from Oleg Nesterov - mostly race and failure path fixes. Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-10-21Merge branch 'urgent' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/rric/oprofile into perf/urgent Pull event-wrapping Oprofile fix from Robert Richter. Signed-off-by: Ingo Molnar <mingo@kernel.org>