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2013-02-12Merge branch 'for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu into akpm Pull m68knommu fix from Greg Ungerer: "This contains a single critical fix for the non-MMU m68k platforms. The change of the kernel exec code path has revealed a problem in the start thread code that causes crashing on boot. This is the fix for it." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: fix trap on execing /bin/init
2013-02-12Merge branch 'stable' of ↵Linus Torvalds17-394/+413
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile into akpm Pull tile bugfixes from Chris Metcalf: "This includes a variety of minor bug fixes, mostly to do with testing "make allyesconfig", "make allmodconfig", "make allnoconfig", inspired to Tejun Heo's observation about Kconfig.freezer not being included. The largest changes are just syntax changes removing the tile-specific use of a macro named INT_MASK, which is way too commonly redefined throughout driver code" * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tile: tag some code with #ifdef CONFIG_COMPAT tile: fix memcpy_*io functions for allnoconfig tile: export a handful of symbols appropriately drm: fix compile failure by including <linux/swiotlb.h> tile: avoid defining INT_MASK macro in <arch/interrupts.h> tile: provide "screen_info" when enabling VT drivers/input/joystick/analog.c: enable precise timer tile: include kernel/Kconfig.freezer in tile Kconfig tile: remove an unused variable in copy_thread()
2013-02-12Merge tag 'fixes-for-linus' of ↵Linus Torvalds4-5/+12
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into akpm Pull ARM SoC fixes from Olof Johansson: "We had a number of fixes queued up, but taking a strict pass-through and weeding out any that either have been broken for a while, or are for platforms that need out-of-tree code to be useful anyway, or other fixes for problems that few users are likely to see in real life, only this short branch of patches remains. The three patches here are to make SMP boot work on the Calxeda platforms again. Some of the rework for cpuids on 3.8 broke it (and it was discovered late, unfortunately)." * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: highbank: mask cluster id from cpu_logical_map ARM: scu: mask cluster id from cpu_logical_map ARM: scu: add empty scu_enable for !CONFIG_SMP
2013-02-12mm: cma: fix accounting of CMA pages placed in high memoryMarek Szyprowski1-0/+4
The total number of low memory pages is determined as totalram_pages - totalhigh_pages, so without this patch all CMA pageblocks placed in highmem were accounted to low memory. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-12kernel/pid.c: reenable interrupts when alloc_pid() fails because init has exitedEric W. Biederman1-1/+1
We're forgetting to reenable local interrupts on an error path. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Reported-by: Josh Boyer <jwboyer@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-12memcg: fix kmemcg registration for late cachesGlauber Costa1-1/+3
The designed workflow for the caches in kmemcg is: register it with memcg_register_cache() if kmemcg is already available or later on when a new kmemcg appears at memcg_update_cache_sizes() which will handle all caches in the system. The caches created at boot time will be handled by the later, and the memcg-caches as well as any system caches that are registered later on by the former. There is a bug, however, in memcg_register_cache: we correctly set up the array size, but do not mark the cache as a root cache. This means that allocations for any cache appearing late in the game will see memcg->memcg_params->is_root_cache == false, and in particular, trigger VM_BUG_ON(!cachep->memcg_params->is_root_cache) in __memcg_kmem_cache_get. The obvious fix is to include the missing assignment. Signed-off-by: Glauber Costa <glommer@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-12mm: don't overwrite mm->def_flags in do_mlockall()Gerald Schaefer1-3/+3
With commit 8e72033f2a48 ("thp: make MADV_HUGEPAGE check for mm->def_flags") the VM_NOHUGEPAGE flag may be set on s390 in mm->def_flags for certain processes, to prevent future thp mappings. This would be overwritten by do_mlockall(), which sets it back to 0 with an optional VM_LOCKED flag set. To fix this, instead of overwriting mm->def_flags in do_mlockall(), only the VM_LOCKED flag should be set or cleared. Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Reported-by: Vivek Goyal <vgoyal@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-12drivers/rtc/rtc-pl031.c: restore ST variant functionalityLinus Walleij1-1/+3
Commit e7e034e18a0a ("drivers/rtc/rtc-pl031.c: fix the missing operation on enable") accidentally broke the ST variants of PL031. The bit that is being poked as "clockwatch" enable bit for the ST variants does the work of bit 0 on this variant. Bit 0 is used for a clock divider on the ST variants, and setting it to 1 will affect timekeeping in a very bad way. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Mian Yousaf KAUKAB <mian.yousaf.kaukab@stericsson.com> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-12Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds8-71/+81
Pull drm fixes from Dave Airlie: "Three nouveau fixes, all user visible issues, and one radeon regression fix" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon: enforce use of radeon_get_ib_value when reading user cmd drm/nouveau: add lockdep annotations drm/nv50/fb: Fix nullptr-deref on IGPs drm/nouveau: use different register to wait for secret scrubber
2013-02-12drm/radeon: enforce use of radeon_get_ib_value when reading user cmdJerome Glisse2-62/+62
When ever parsing cmd buffer supplied by userspace we need to use radeon_get_ib_value rather than directly accessing the ib as the user cmd might not yet be copied into the ib thus the parser might read value that does not correspond to what user is sending and possibly allowing user to send malicious command undected. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-02-11Merge branch 'drm-nouveau-fixes-3.8' of ↵Dave Airlie6-9/+19
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next Fixes for one major lockdep warning, one oops reported by a few people, and fix for a long hang on some gpu engines. * 'drm-nouveau-fixes-3.8' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau: add lockdep annotations drm/nv50/fb: Fix nullptr-deref on IGPs drm/nouveau: use different register to wait for secret scrubber
2013-02-09Merge tag 'highbank-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux ↵Olof Johansson4-5/+12
into fixes From Rob Herring: highbank fixes for 3.8 -Compile fix for !SMP -More cpu cluster id related fixes * tag 'highbank-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux: ARM: highbank: mask cluster id from cpu_logical_map ARM: scu: mask cluster id from cpu_logical_map ARM: scu: add empty scu_enable for !CONFIG_SMP
2013-02-09drm/nouveau: add lockdep annotationsMarcin Slusarz3-3/+9
1) Lockdep thinks all nouveau subdevs belong to the same class and can be locked in arbitrary order, which is not true (at least in general case). Tell it to distinguish subdevs by (o)class type. 2) DRM client can be locked under user client lock - tell lockdep to put DRM client lock in a separate class. Reported-by: Arend van Spriel <arend@broadcom.com> Reported-by: Peter Hurley <peter@hurleysoftware.com> Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Reported-by: Daniel J Blueman <daniel@quora.org> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: stable@vger.kernel.org [3.7, but needs s/const ofuncs/ofuncs/ to build] Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-02-09Linux 3.8-rc7v3.8-rc7Linus Torvalds1-1/+1
2013-02-09Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-armLinus Torvalds4-5/+26
Pull ARM fixes from Russell King: "I was going to hold these off until v3.8 was out, and send them with a stable tag, but as everyone else is pushing much bigger fixes which Linus is accepting, let's save people from the hastle of having to patch v3.8 back into working or use a stable kernel. Looking at the diffstat, this really is high value for its size; this is miniscule compared to how the -rc6 to tip diffstat currently looks. So, four patches in this set: - Punit Agrawal reports that the kernel no longer boots on MPCore due to a new assumption made in the GIC code which isn't true of earlier GIC designs. This is the biggest change in this set. - Punit's boot log also revealed a bunch of WARN_ON() dumps caused by the DT-ification of the GIC support without fixing up non-DT Realview - which now sees a greater number of interrupts than it did before. - A fix for the DMA coherent code from Marek which uses the wrong check for atomic allocations; this can result in spinlock lockups or other nasty effects. - A fix from Will, which will affect all Android based platforms if not applied (which use the 2G:2G VM split) - this causes particularly 'make' to misbehave unless this bug is fixed." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is aligned ARM: DMA mapping: fix bad atomic test ARM: realview: ensure that we have sufficient IRQs available ARM: GIC: fix GIC cpumask initialization
2013-02-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds68-348/+649
Pull networking fixes from David Miller: 1) Revert iwlwifi reclaimed packet tracking, it causes problems for a bunch of folks. From Emmanuel Grumbach. 2) Work limiting code in brcmsmac wifi driver can clear tx status without processing the event. From Arend van Spriel. 3) rtlwifi USB driver processes wrong SKB, fix from Larry Finger. 4) l2tp tunnel delete can race with close, fix from Tom Parkin. 5) pktgen_add_device() failures are not checked at all, fix from Cong Wang. 6) Fix unintentional removal of carrier off from tun_detach(), otherwise we confuse userspace, from Michael S. Tsirkin. 7) Don't leak socket reference counts and ubufs in vhost-net driver, from Jason Wang. 8) vmxnet3 driver gets it's initial carrier state wrong, fix from Neil Horman. 9) Protect against USB networking devices which spam the host with 0 length frames, from Bjørn Mork. 10) Prevent neighbour overflows in ipv6 for locally destined routes, from Marcelo Ricardo. This is the best short-term fix for this, a longer term fix has been implemented in net-next. 11) L2TP uses ipv4 datagram routines in it's ipv6 code, whoops. This mistake is largely because the ipv6 functions don't even have some kind of prefix in their names to suggest they are ipv6 specific. From Tom Parkin. 12) Check SYN packet drops properly in tcp_rcv_fastopen_synack(), from Yuchung Cheng. 13) Fix races and TX skb freeing bugs in via-rhine's NAPI support, from Francois Romieu and your's truly. 14) Fix infinite loops and divides by zero in TCP congestion window handling, from Eric Dumazet, Neal Cardwell, and Ilpo Järvinen. 15) AF_PACKET tx ring handling can leak kernel memory to userspace, fix from Phil Sutter. 16) Fix error handling in ipv6 GRE tunnel transmit, from Tommi Rantala. 17) Protect XEN netback driver against hostile frontend putting garbage into the rings, don't leak pages in TX GOP checking, and add proper resource releasing in error path of xen_netbk_get_requests(). From Ian Campbell. 18) SCTP authentication keys should be cleared out and released with kzfree(), from Daniel Borkmann. 19) L2TP is a bit too clever trying to maintain skb->truesize, and ends up corrupting socket memory accounting to the point where packet sending is halted indefinitely. Just remove the adjustments entirely, they aren't really needed. From Eric Dumazet. 20) ATM Iphase driver uses a data type with the same name as the S390 headers, rename to fix the build. From Heiko Carstens. 21) Fix a typo in copying the inner network header offset from one SKB to another, from Pravin B Shelar. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (56 commits) net: sctp: sctp_endpoint_free: zero out secret key data net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree atm/iphase: rename fregt_t -> ffreg_t net: usb: fix regression from FLAG_NOARP code l2tp: dont play with skb->truesize net: sctp: sctp_auth_key_put: use kzfree instead of kfree netback: correct netbk_tx_err to handle wrap around. xen/netback: free already allocated memory on failure in xen_netbk_get_requests xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop. xen/netback: shutdown the ring if it contains garbage. net: qmi_wwan: add more Huawei devices, including E320 net: cdc_ncm: add another Huawei vendor specific device ipv6/ip6_gre: fix error case handling in ip6gre_tunnel_xmit() tcp: fix for zero packets_in_flight was too broad brcmsmac: rework of mac80211 .flush() callback operation ssb: unregister gpios before unloading ssb bcma: unregister gpios before unloading bcma rtlwifi: Fix scheduling while atomic bug net: usbnet: fix tx_dropped statistics tcp: ipv6: Update MIB counters for drops ...
2013-02-08Merge branch 'sctp_keys'David S. Miller2-1/+6
Daniel Borkmann says: ==================== Cryptographically used keys should be zeroed out when our session ends resp. memory is freed, thus do not leave them somewhere in the memory. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08net: sctp: sctp_endpoint_free: zero out secret key dataDaniel Borkmann1-0/+5
On sctp_endpoint_destroy, previously used sensitive keying material should be zeroed out before the memory is returned, as we already do with e.g. auth keys when released. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfreeDaniel Borkmann1-1/+1
In sctp_setsockopt_auth_key, we create a temporary copy of the user passed shared auth key for the endpoint or association and after internal setup, we free it right away. Since it's sensitive data, we should zero out the key before returning the memory back to the allocator. Thus, use kzfree instead of kfree, just as we do in sctp_auth_key_put(). Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08atm/iphase: rename fregt_t -> ffreg_tHeiko Carstens1-73/+73
We have conflicting type qualifiers for "freg_t" in s390's ptrace.h and the iphase atm device driver, which causes the compile error below. Unfortunately the s390 typedef can't be renamed, since it's a user visible api, nor can I change the include order in s390 code to avoid the conflict. So simply rename the iphase typedef to a new name. Fixes this compile error: In file included from drivers/atm/iphase.c:66:0: drivers/atm/iphase.h:639:25: error: conflicting type qualifiers for 'freg_t' In file included from next/arch/s390/include/asm/ptrace.h:9:0, from next/arch/s390/include/asm/lowcore.h:12, from next/arch/s390/include/asm/thread_info.h:30, from include/linux/thread_info.h:54, from include/linux/preempt.h:9, from include/linux/spinlock.h:50, from include/linux/seqlock.h:29, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from drivers/atm/iphase.c:43: next/arch/s390/include/uapi/asm/ptrace.h:197:3: note: previous declaration of 'freg_t' was here Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: chas williams - CONTRACTOR <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08tile: tag some code with #ifdef CONFIG_COMPATChris Metcalf1-0/+4
This allows us to disable COMPAT mode without a link error. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2013-02-08tile: fix memcpy_*io functions for allnoconfigChris Metcalf1-1/+5
On tilepro without CONFIG_PCI, we can't provide inlines of these functions, as we don't have readl/writel. In addition, fix memset_io() signature to take a volatile void *. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2013-02-08tile: export a handful of symbols appropriatelyChris Metcalf6-0/+10
This was shown up by running with "allmodconfig". I used EXPORT_SYMBOL() to match existing conventions in files that were already exporting symbols, or that were exported that way by other architectures, and otherwise EXPORT_SYMBOL_GPL(). Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
2013-02-08ARM: 7641/1: memory: fix broken mmap by ensuring TASK_UNMAPPED_BASE is alignedWill Deacon1-1/+1
We have received multiple reports of mmap failures when running with a 2:2 vm split. These manifest as either -EINVAL with a non page-aligned address (ending 0xaaa) or a SEGV, depending on the application. The issue is commonly observed in children of make, which appears to use bottom-up mmap (assumedly because it changes the stack rlimit). Further investigation reveals that this regression was triggered by 394ef6403abc ("mm: use vm_unmapped_area() on arm architecture"), whereby TASK_UNMAPPED_BASE is no longer page-aligned for bottom-up mmap, causing get_unmapped_area to choke on misaligned addressed. This patch fixes the problem by defining TASK_UNMAPPED_BASE in terms of TASK_SIZE and explicitly aligns the result to 16M, matching the other end of the heap. Acked-by: Nicolas Pitre <nico@linaro.org> Reported-by: Steve Capper <steve.capper@arm.com> Reported-by: Jean-Francois Moine <moinejf@free.fr> Reported-by: Christoffer Dall <cdall@cs.columbia.edu> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-08ARM: DMA mapping: fix bad atomic testRussell King1-1/+1
Realview fails to boot with this warning: BUG: spinlock lockup suspected on CPU#0, init/1 lock: 0xcf8bde10, .magic: dead4ead, .owner: init/1, .owner_cpu: 0 Backtrace: [<c00185d8>] (dump_backtrace+0x0/0x10c) from [<c03294e8>] (dump_stack+0x18/0x1c) r6:cf8bde10 r5:cf83d1c0 r4:cf8bde10 r3:cf83d1c0 [<c03294d0>] (dump_stack+0x0/0x1c) from [<c018926c>] (spin_dump+0x84/0x98) [<c01891e8>] (spin_dump+0x0/0x98) from [<c0189460>] (do_raw_spin_lock+0x100/0x198) [<c0189360>] (do_raw_spin_lock+0x0/0x198) from [<c032cbac>] (_raw_spin_lock+0x3c/0x44) [<c032cb70>] (_raw_spin_lock+0x0/0x44) from [<c01c9224>] (pl011_console_write+0xe8/0x11c) [<c01c913c>] (pl011_console_write+0x0/0x11c) from [<c002aea8>] (call_console_drivers.clone.7+0xdc/0x104) [<c002adcc>] (call_console_drivers.clone.7+0x0/0x104) from [<c002b320>] (console_unlock+0x2e8/0x454) [<c002b038>] (console_unlock+0x0/0x454) from [<c002b8b4>] (vprintk_emit+0x2d8/0x594) [<c002b5dc>] (vprintk_emit+0x0/0x594) from [<c0329718>] (printk+0x3c/0x44) [<c03296dc>] (printk+0x0/0x44) from [<c002929c>] (warn_slowpath_common+0x28/0x6c) [<c0029274>] (warn_slowpath_common+0x0/0x6c) from [<c0029304>] (warn_slowpath_null+0x24/0x2c) [<c00292e0>] (warn_slowpath_null+0x0/0x2c) from [<c0070ab0>] (lockdep_trace_alloc+0xd8/0xf0) [<c00709d8>] (lockdep_trace_alloc+0x0/0xf0) from [<c00c0850>] (kmem_cache_alloc+0x24/0x11c) [<c00c082c>] (kmem_cache_alloc+0x0/0x11c) from [<c00bb044>] (__get_vm_area_node.clone.24+0x7c/0x16c) [<c00bafc8>] (__get_vm_area_node.clone.24+0x0/0x16c) from [<c00bb7b8>] (get_vm_area_caller+0x48/0x54) [<c00bb770>] (get_vm_area_caller+0x0/0x54) from [<c0020064>] (__alloc_remap_buffer.clone.15+0x38/0xb8) [<c002002c>] (__alloc_remap_buffer.clone.15+0x0/0xb8) from [<c0020244>] (__dma_alloc+0x160/0x2c8) [<c00200e4>] (__dma_alloc+0x0/0x2c8) from [<c00204d8>] (arm_dma_alloc+0x88/0xa0)[<c0020450>] (arm_dma_alloc+0x0/0xa0) from [<c00beb00>] (dma_pool_alloc+0xcc/0x1a8) [<c00bea34>] (dma_pool_alloc+0x0/0x1a8) from [<c01a9d14>] (pl08x_fill_llis_for_desc+0x28/0x568) [<c01a9cec>] (pl08x_fill_llis_for_desc+0x0/0x568) from [<c01aab8c>] (pl08x_prep_slave_sg+0x258/0x3b0) [<c01aa934>] (pl08x_prep_slave_sg+0x0/0x3b0) from [<c01c9f74>] (pl011_dma_tx_refill+0x140/0x288) [<c01c9e34>] (pl011_dma_tx_refill+0x0/0x288) from [<c01ca748>] (pl011_start_tx+0xe4/0x120) [<c01ca664>] (pl011_start_tx+0x0/0x120) from [<c01c54a4>] (__uart_start+0x48/0x4c) [<c01c545c>] (__uart_start+0x0/0x4c) from [<c01c632c>] (uart_start+0x2c/0x3c) [<c01c6300>] (uart_start+0x0/0x3c) from [<c01c795c>] (uart_write+0xcc/0xf4) [<c01c7890>] (uart_write+0x0/0xf4) from [<c01b0384>] (n_tty_write+0x1c0/0x3e4) [<c01b01c4>] (n_tty_write+0x0/0x3e4) from [<c01acfe8>] (tty_write+0x144/0x240) [<c01acea4>] (tty_write+0x0/0x240) from [<c01ad17c>] (redirected_tty_write+0x98/0xac) [<c01ad0e4>] (redirected_tty_write+0x0/0xac) from [<c00c371c>] (vfs_write+0xbc/0x150) [<c00c3660>] (vfs_write+0x0/0x150) from [<c00c39c0>] (sys_write+0x4c/0x78) [<c00c3974>] (sys_write+0x0/0x78) from [<c0014460>] (ret_fast_syscall+0x0/0x3c) This happens because the DMA allocation code is not respecting atomic allocations correctly. GFP flags should not be tested for GFP_ATOMIC to determine if an atomic allocation is being requested. GFP_ATOMIC is not a flag but a value. The GFP bitmask flags are all prefixed with __GFP_. The rest of the kernel tests for __GFP_WAIT not being set to indicate an atomic allocation. We need to do the same. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-08ARM: realview: ensure that we have sufficient IRQs availableRussell King1-1/+1
Realview EB with a rev B MPcore tile results in lots of warnings at boot because it can't allocate enough IRQs. Fix this by increasing the number of available IRQs. WARNING: at /home/rmk/git/linux-rmk/arch/arm/common/gic.c:757 gic_init_bases+0x12c/0x2ec() Cannot allocate irq_descs @ IRQ96, assuming pre-allocated Modules linked in: Backtrace: [<c00185d8>] (dump_backtrace+0x0/0x10c) from [<c03294e8>] (dump_stack+0x18/0x1c) r6:000002f5 r5:c042c62c r4:c044ff40 r3:c045f240 [<c03294d0>] (dump_stack+0x0/0x1c) from [<c00292c8>] (warn_slowpath_common+0x54/0x6c) [<c0029274>] (warn_slowpath_common+0x0/0x6c) from [<c0029384>] (warn_slowpath_fmt+0x38/0x40) [<c002934c>] (warn_slowpath_fmt+0x0/0x40) from [<c042c62c>] (gic_init_bases+0x12c/0x2ec) [<c042c500>] (gic_init_bases+0x0/0x2ec) from [<c042cdc8>] (gic_init_irq+0x8c/0xd8) [<c042cd3c>] (gic_init_irq+0x0/0xd8) from [<c042827c>] (init_IRQ+0x1c/0x24) [<c0428260>] (init_IRQ+0x0/0x24) from [<c04256c8>] (start_kernel+0x1a4/0x300) [<c0425524>] (start_kernel+0x0/0x300) from [<70008070>] (0x70008070) ---[ end trace 1b75b31a2719ed1c ]--- ------------[ cut here ]------------ WARNING: at /home/rmk/git/linux-rmk/kernel/irq/irqdomain.c:234 irq_domain_add_legacy+0x80/0x140() Modules linked in: Backtrace: [<c00185d8>] (dump_backtrace+0x0/0x10c) from [<c03294e8>] (dump_stack+0x18/0x1c) r6:000000ea r5:c0081a38 r4:00000000 r3:c045f240 [<c03294d0>] (dump_stack+0x0/0x1c) from [<c00292c8>] (warn_slowpath_common+0x54/0x6c) [<c0029274>] (warn_slowpath_common+0x0/0x6c) from [<c0029304>] (warn_slowpath_null+0x24/0x2c) [<c00292e0>] (warn_slowpath_null+0x0/0x2c) from [<c0081a38>] (irq_domain_add_legacy+0x80/0x140) [<c00819b8>] (irq_domain_add_legacy+0x0/0x140) from [<c042c64c>] (gic_init_bases+0x14c/0x2ec) [<c042c500>] (gic_init_bases+0x0/0x2ec) from [<c042cdc8>] (gic_init_irq+0x8c/0xd8) [<c042cd3c>] (gic_init_irq+0x0/0xd8) from [<c042827c>] (init_IRQ+0x1c/0x24) [<c0428260>] (init_IRQ+0x0/0x24) from [<c04256c8>] (start_kernel+0x1a4/0x300) [<c0425524>] (start_kernel+0x0/0x300) from [<70008070>] (0x70008070) ---[ end trace 1b75b31a2719ed1d ]--- ------------[ cut here ]------------ WARNING: at /home/rmk/git/linux-rmk/arch/arm/common/gic.c:762 gic_init_bases+0x170/0x2ec() Modules linked in: Backtrace: [<c00185d8>] (dump_backtrace+0x0/0x10c) from [<c03294e8>] (dump_stack+0x18/0x1c) r6:000002fa r5:c042c670 r4:00000000 r3:c045f240 [<c03294d0>] (dump_stack+0x0/0x1c) from [<c00292c8>] (warn_slowpath_common+0x54/0x6c) [<c0029274>] (warn_slowpath_common+0x0/0x6c) from [<c0029304>] (warn_slowpath_null+0x24/0x2c) [<c00292e0>] (warn_slowpath_null+0x0/0x2c) from [<c042c670>] (gic_init_bases+0x170/0x2ec) [<c042c500>] (gic_init_bases+0x0/0x2ec) from [<c042cdc8>] (gic_init_irq+0x8c/0xd8) [<c042cd3c>] (gic_init_irq+0x0/0xd8) from [<c042827c>] (init_IRQ+0x1c/0x24) [<c0428260>] (init_IRQ+0x0/0x24) from [<c04256c8>] (start_kernel+0x1a4/0x300) [<c0425524>] (start_kernel+0x0/0x300) from [<70008070>] (0x70008070) ---[ end trace 1b75b31a2719ed1e ]--- Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-08ARM: GIC: fix GIC cpumask initializationRussell King1-2/+23
Punit Agrawal reports: > I was trying to boot 3.8-rc5 on Realview EB 11MPCore using > realview-smp_defconfig as a starting point but the kernel failed to > progress past the log below (config attached). > > Pawel suggested I try reverting 384a290283f - "ARM: gic: use a private > mapping for CPU target interfaces" that you've authored. With this > commit reverted the kernel boots. > > I am not quite sure why the commit breaks 11MPCore but Pawel (cc'd) > might be able to shed light on that. Some early GIC implementations return zero for the first distributor CPU routing register. This means we can't rely on that telling us which CPU interface we're connected to. We know that these platforms implement PPIs for IRQs 29-31 - but we shouldn't assume that these will always be populated. So, instead, scan for a non-zero CPU routing register in the first 32 IRQs and use that as our CPU mask. Reported-by: Punit Agrawal <punit.agrawal@arm.com> Reviewed-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-02-08Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds1-5/+8
Pull drm regression fix from Dave Airlie: "This one fixes a sleep while locked regression that was introduced earlier in 3.8." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/ttm: fix fence locking in ttm_buffer_object_transfer, 2nd try
2013-02-08net: usb: fix regression from FLAG_NOARP codeLucas Stach1-1/+1
In commit 6509141f9c2ba74df6cc72ec35cd1865276ae3a4 ("usbnet: add new flag FLAG_NOARP for usb net devices"), the newly added flag NOARP was using an already defined value, which broke drivers using flag MULTI_PACKET. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08l2tp: dont play with skb->truesizeEric Dumazet2-12/+0
Andrew Savchenko reported a DNS failure and we diagnosed that some UDP sockets were unable to send more packets because their sk_wmem_alloc was corrupted after a while (tx_queue column in following trace) $ cat /proc/net/udp sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops ... 459: 00000000:0270 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 4507 2 ffff88003d612380 0 466: 00000000:0277 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 4802 2 ffff88003d613180 0 470: 076A070A:007B 00000000:0000 07 FFFF4600:00000000 00:00000000 00000000 123 0 5552 2 ffff880039974380 0 470: 010213AC:007B 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 4986 2 ffff88003dbd3180 0 470: 010013AC:007B 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 4985 2 ffff88003dbd2e00 0 470: 00FCA8C0:007B 00000000:0000 07 FFFFFB00:00000000 00:00000000 00000000 0 0 4984 2 ffff88003dbd2a80 0 ... Playing with skb->truesize is tricky, especially when skb is attached to a socket, as we can fool memory charging. Just remove this code, its not worth trying to be ultra precise in xmit path. Reported-by: Andrew Savchenko <bircoph@gmail.com> Tested-by: Andrew Savchenko <bircoph@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: James Chapman <jchapman@katalix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07net: sctp: sctp_auth_key_put: use kzfree instead of kfreeDaniel Borkmann1-1/+1
For sensitive data like keying material, it is common practice to zero out keys before returning the memory back to the allocator. Thus, use kzfree instead of kfree. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07Merge branch 'fixes' of ↵David S. Miller1-7/+9
git://git.kernel.org/pub/scm/linux/kernel/git/jesse/openvswitch into openvswitch Jesse Gross says: ==================== One bug fix for net/3.8 for a long standing problem that was reported a few times recently. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07Merge branch 'netback'David S. Miller3-53/+88
Ian Campbell says: ==================== The Xen netback implementation contains a couple of flaws which can allow a guest to cause a DoS in the backend domain, potentially affecting other domains in the system. CVE-2013-0216 is a failure to sanity check the ring producer/consumer pointers which can allow a guest to cause netback to loop for an extended period preventing other work from occurring. CVE-2013-0217 is a memory leak on an error path which is guest triggerable. The following series contains the fixes for these issues, as previously included in Xen Security Advisory 39: http://lists.xen.org/archives/html/xen-announce/2013-02/msg00001.html Changes in v2: - Typo and block comment format fixes - Added stable Cc ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07netback: correct netbk_tx_err to handle wrap around.Ian Campbell1-1/+1
Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Jan Beulich <JBeulich@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07xen/netback: free already allocated memory on failure in xen_netbk_get_requestsIan Campbell1-1/+12
Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07xen/netback: don't leak pages on failure in xen_netbk_tx_check_gop.Matthew Daley1-25/+13
Signed-off-by: Matthew Daley <mattjd@gmail.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Jan Beulich <JBeulich@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-07xen/netback: shutdown the ring if it contains garbage.Ian Campbell3-26/+62
A buggy or malicious frontend should not be able to confuse netback. If we spot anything which is not as it should be then shutdown the device and don't try to continue with the ring in a potentially hostile state. Well behaved and non-hostile frontends will not be penalised. As well as making the existing checks for such errors fatal also add a new check that ensures that there isn't an insane number of requests on the ring (i.e. more than would fit in the ring). If the ring contains garbage then previously is was possible to loop over this insane number, getting an error each time and therefore not generating any more pending requests and therefore not exiting the loop in xen_netbk_tx_build_gops for an externded period. Also turn various netdev_dbg calls which no precipitate a fatal error into netdev_err, they are rate limited because the device is shutdown afterwards. This fixes at least one known DoS/softlockup of the backend domain. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Jan Beulich <JBeulich@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-08Merge tag 'fixes-for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull virtio fix from Rusty Russell: "Obviously I forgot to push this before linux.conf.au..." * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: virtio_console: Don't access uninitialized data.
2013-02-08Merge tag 'rdma-for-linus' of ↵Linus Torvalds4-15/+10
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull IB regression fixes from Roland Dreier: - Fix mlx4 VFs not working on old guests because of 64B CQE changes - Fix ill-considered sparse fix for qib - Fix IPoIB crash due to skb double destruct introduced in 3.8-rc1 * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/qib: Fix for broken sparse warning fix mlx4_core: Fix advertisement of wrong PF context behaviour IPoIB: Fix crash due to skb double destruct
2013-02-08Merge branch 'for-linus' of ↵Linus Torvalds8-36/+87
git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs fixes from Chris Mason: "We've got corner cases for updating i_size that ceph was hitting, error handling for quotas when we run out of space, a very subtle snapshot deletion race, a crash while removing devices, and one deadlock between subvolume creation and the sb_internal code (thanks lockdep)." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: move d_instantiate outside the transaction during mksubvol Btrfs: fix EDQUOT handling in btrfs_delalloc_reserve_metadata Btrfs: fix possible stale data exposure Btrfs: fix missing i_size update Btrfs: fix race between snapshot deletion and getting inode Btrfs: fix missing release of the space/qgroup reservation in start_transaction() Btrfs: fix wrong sync_writers decrement in btrfs_file_aio_write() Btrfs: do not merge logged extents if we've removed them from the tree btrfs: don't try to notify udev about missing devices
2013-02-08Merge tag 'pinctrl-for-v3.8-late' of ↵Linus Torvalds4-4/+22
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull late pinctrl fixes from Linus Walleij: "Two patches appeared as of late, one was completely news to me, the other one was rotated in -next for the next merge window but turned out to be a showstopper. - Exynos Kconfig fixup - SIRF DT translation bug" * tag 'pinctrl-for-v3.8-late' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: pinctrl: sirf: replace of_gpio_simple_xlate by sirf specific of_xlate pinctrl: exynos: change PINCTRL_EXYNOS option
2013-02-08Merge tag 'stable/for-linus-3.8-rc6-tag' of ↵Linus Torvalds2-9/+9
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen Pull Xen fixes from Konrad Rzeszutek Wilk: "This has two fixes. One is a security fix wherein we would spam the kernel printk buffer if one of the guests was misbehaving. The other is much tamer and it was us only checking for one type of error from the IRQ subsystem (when allocating new IRQs) instead of for all of them. - Fix an IRQ allocation where we only check for a specific error (-1). - CVE-2013-0231 / XSA-43. Make xen-pciback rate limit error messages from xen_pcibk_enable_msi{,x}()" * tag 'stable/for-linus-3.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: fix error handling path if xen_allocate_irq_dynamic fails xen-pciback: rate limit error messages from xen_pcibk_enable_msi{,x}()
2013-02-08Merge tag 'regulator-v3.8-rc6' of ↵Linus Torvalds8-35/+40
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "Mostly driver specific fixes here, though one of them uncovered the issue Stephen Warren fixed with multiple OF matches getting upset due to a lack of cleanup." * tag 'regulator-v3.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: s2mps11: fix incorrect register for buck10 regulator: clear state each invocation of of_regulator_match regulator: max8997: Fix using wrong dev argument at various places regulator: max77686: Fix using wrong dev argument at various places regulator: max8907: Fix using wrong dev argument for calling of_regulator_match regulator: max8998: fix incorrect min_uV value for ldo10 regulator: tps65910: Fix using wrong dev argument for calling of_regulator_match regulator: tps65217: Fix using wrong dev argument for calling of_regulator_match
2013-02-08drm/ttm: fix fence locking in ttm_buffer_object_transfer, 2nd tryDaniel Vetter1-5/+8
This fixes up commit e8e89622ed361c46bf90ba4828e685a8b603f7e5 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Tue Dec 18 22:25:11 2012 +0100 drm/ttm: fix fence locking in ttm_buffer_object_transfer which leaves behind a might_sleep in atomic context, since the fence_lock spinlock is held over a kmalloc(GFP_KERNEL) call. The fix is to revert the above commit and only take the lock where we need it, around the call to ->sync_obj_ref. v2: Fixup things noticed by Maarten Lankhorst: - Brown paper bag locking bug. - No need for kzalloc if we clear the entire thing on the next line. - check for bo->sync_obj (totally unlikely race, but still someone else could have snuck in) and clear fbo->sync_obj if it's cleared already. Reported-by: Dave Airlie <airlied@gmail.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-02-07virtio_console: Don't access uninitialized data.Sjur Brændeland1-1/+2
Don't access uninitialized work-queue when removing device. The work queue is initialized only if the device multi-queue. So don't call cancel_work unless this is a multi-queue device. This fixes the following panic: Kernel panic - not syncing: BUG! Call Trace: 62031b28: [<6026085d>] panic+0x16b/0x2d3 62031b30: [<6004ef5e>] flush_work+0x0/0x1d7 62031b60: [<602606f2>] panic+0x0/0x2d3 62031b68: [<600333b0>] memcpy+0x0/0x140 62031b80: [<6002d58a>] unblock_signals+0x0/0x84 62031ba0: [<602609c5>] printk+0x0/0xa0 62031bd8: [<60264e51>] __mutex_unlock_slowpath+0x13d/0x148 62031c10: [<6004ef5e>] flush_work+0x0/0x1d7 62031c18: [<60050234>] try_to_grab_pending+0x0/0x17e 62031c38: [<6004e984>] get_work_gcwq+0x71/0x8f 62031c48: [<60050539>] __cancel_work_timer+0x5b/0x115 62031c78: [<628acc85>] unplug_port+0x0/0x191 [virtio_console] 62031c98: [<6005061c>] cancel_work_sync+0x12/0x14 62031ca8: [<628ace96>] virtcons_remove+0x80/0x15c [virtio_console] 62031ce8: [<628191de>] virtio_dev_remove+0x1e/0x7e [virtio] 62031d08: [<601cf242>] __device_release_driver+0x75/0xe4 62031d28: [<601cf2dd>] device_release_driver+0x2c/0x40 62031d48: [<601ce0dd>] driver_unbind+0x7d/0xc6 62031d88: [<601cd5d9>] drv_attr_store+0x27/0x29 62031d98: [<60115f61>] sysfs_write_file+0x100/0x14d 62031df8: [<600b737d>] vfs_write+0xcb/0x184 62031e08: [<600b58b8>] filp_close+0x88/0x94 62031e38: [<600b7686>] sys_write+0x59/0x88 62031e88: [<6001ced1>] handle_syscall+0x5d/0x80 62031ea8: [<60030a74>] userspace+0x405/0x531 62031f08: [<600d32cc>] sys_dup+0x0/0x5e 62031f28: [<601b11d6>] strcpy+0x0/0x18 62031f38: [<600be46c>] do_execve+0x10/0x12 62031f48: [<600184c7>] run_init_process+0x43/0x45 62031fd8: [<60019a91>] new_thread_handler+0xba/0xbc Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Cc: stable@kernel.org Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-02-07Merge tag 'sound-3.8' of ↵Linus Torvalds6-47/+63
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Just a couple of build regression fixes for ASoC fsl stuff. It doesn't look too trivial, but neither intrusive, so hopefully I can avoid your curse..." Hey, Takashi has a good track record, I think he gets a pass.. * tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: fsl: fix snd-soc-imx-pcm module build Revert "ASoC: fsl: fix multiple definition of init_module"
2013-02-07Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds8-28/+101
Pull block layer updates from Jens Axboe: "I've got a few bits pending for 3.8 final, that I better get sent out. It's all been sitting for a while, I consider it safe. It contains: - Two bug fixes for mtip32xx, fixing a driver hang and a crash. - A few-liner protocol error fix for drbd. - A few fixes for the xen block front/back driver, fixing a potential data corruption issue. - A race fix for disk_clear_events(), causing spurious warnings. Out of the Chrome OS base. - A deadlock fix for disk_clear_events(), moving it to the a unfreezable workqueue. Also from the Chrome OS base." * 'for-linus' of git://git.kernel.dk/linux-block: drbd: fix potential protocol error and resulting disconnect/reconnect mtip32xx: fix for crash when the device surprise removed during rebuild mtip32xx: fix for driver hang after a command timeout block: prevent race/cleanup block: remove deadlock in disk_clear_events xen-blkfront: handle bvecs with partial data llist/xen-blkfront: implement safe version of llist_for_each_entry xen-blkback: implement safe iterator for the list of persistent grants
2013-02-06net: qmi_wwan: add more Huawei devices, including E320Bjørn Mork1-0/+12
Adding new class/subclass/protocol combinations based on the GPLed out-of-tree Huawei driver. One of these has already appeared on a device labelled as "E320". Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-06net: cdc_ncm: add another Huawei vendor specific deviceBjørn Mork1-0/+3
Adding a new vendor specific class/subclass/protocol combination for CDC NCM devices based on information from a GPLed out-of-tree driver from Huawei. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-02-06ipv6/ip6_gre: fix error case handling in ip6gre_tunnel_xmit()Tommi Rantala1-1/+1
ip6gre_tunnel_xmit() is leaking the skb when we hit this error branch, and the -1 return value from this function is bogus. Use the error handling we already have in place in ip6gre_tunnel_xmit() for this error case to fix this. Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>