- 22 Nov, 2012 6 commits
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Matt Schulte authored
Add support for Commtech's Fastcom Async-335 and Fastcom Async-PCIe cards Signed-off-by:
Matt Schulte <matts@commtech-fastcom.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Matt Schulte authored
Add XR17D15x devices to the exar_handle_irq override: they have the same extra interrupt register that could fire and never be serviced by the standard handle_irq. Signed-off-by:
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Matt Schulte authored
Add sleep capability to XR17D15X ports Signed-off-by:
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Matt Schulte authored
Add initialization of sampling mode and tx/rx triggers to pci_xr17v35x_setup Signed-off-by:
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Matt Schulte authored
Optimization: check for presence of UPF_EXAR_EFR flag before serial_in Signed-off-by:
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Matt Schulte authored
Add register definitions used in several Exar PCI/PCIe UARTs Signed-off-by:
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- 21 Nov, 2012 15 commits
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Sonic Zhang authored
set_termios may be invoked before the former data transfer is completed. Block until the tranfer is done. Signed-off-by:
Sonic Zhang <sonic.zhang@analog.com> Signed-off-by:
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Josh Triplett authored
Nothing outside of drivers/tty/pty.c references pty_resize. Signed-off-by:
Josh Triplett <josh@joshtriplett.org> Signed-off-by:
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Matt Schulte authored
Add support for new devices: Exar's XR17V35x family of multi-port PCIe UARTs. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by:
Bill Pemberton <wfp5p@virginia.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Acked-by:
Tobias Klauser <tklauser@distanz.ch> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by:
David Brown <davidb@codeaurora.org> Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devinitconst is no longer needed. Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devinitdata is no longer needed. Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devinitdata is no longer needed. Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by:
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Bill Pemberton authored
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by:
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Josh Triplett authored
Nothing outside of drivers/tty/tty_io.c references these functions, so mark them static. Signed-off-by:
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Josh Triplett authored
C files should include the header files that prototype their functions. This keeps the types in sync, and eliminates warnings from GCC (-Wmissing-prototypes) and Sparse (-Wdecl). Signed-off-by:
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Jiri Slaby authored
I am the one introducing the most potential bugs. And people should know the urchin to whip. Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Signed-off-by:
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Jiri Slaby authored
Currently, the port may be destroyed twice or destroyed without being initialized. Fix this by sticking the destroy call in the right place as suggested by Tilman. Signed-off-by:
Tilman Schmidt <tilman@imap.cc> Cc: Hansjoerg Lipp <hjlipp@web.de> Cc: gigaset307x-common@lists.sourceforge.net Signed-off-by:
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Masanari Iida authored
Correct spelling typo in staging/dgrp driver Signed-off-by:
Masanari Iida <standby24x7@gmail.com> Signed-off-by:
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- 17 Nov, 2012 3 commits
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Greg Kroah-Hartman authored
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fix from Marcelo Tosatti: "A correction for oops on module init with older Intel hosts." * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: Fix invalid secondary exec controls in vmx_cpuid_update()
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- 16 Nov, 2012 16 commits
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Linus Torvalds authored
Merge misc fixes from Andrew Morton. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (12 patches) revert "mm: fix-up zone present pages" tmpfs: change final i_blocks BUG to WARNING tmpfs: fix shmem_getpage_gfp() VM_BUG_ON mm: highmem: don't treat PKMAP_ADDR(LAST_PKMAP) as a highmem address mm: revert "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures" rapidio: fix kernel-doc warnings swapfile: fix name leak in swapoff memcg: fix hotplugged memory zone oops mips, arc: fix build failure memcg: oom: fix totalpages calculation for memory.swappiness==0 mm: fix build warning for uninitialized value mm: add anon_vma_lock to validate_mm()
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Andrew Morton authored
Revert commit 7f1290f2 ("mm: fix-up zone present pages") That patch tried to fix a issue when calculating zone->present_pages, but it caused a regression on 32bit systems with HIGHMEM. With that change, reset_zone_present_pages() resets all zone->present_pages to zero, and fixup_zone_present_pages() is called to recalculate zone->present_pages when the boot allocator frees core memory pages into buddy allocator. Because highmem pages are not freed by bootmem allocator, all highmem zones' present_pages becomes zero. Various options for improving the situation are being discussed but for now, let's return to the 3.6 code. Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Petr Tesarik <ptesarik@suse.cz> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by:
David Rientjes <rientjes@google.com> Tested-by:
Chris Clayton <chris2553@googlemail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Hugh Dickins authored
Under a particular load on one machine, I have hit shmem_evict_inode()'s BUG_ON(inode->i_blocks), enough times to narrow it down to a particular race between swapout and eviction. It comes from the "if (freed > 0)" asymmetry in shmem_recalc_inode(), and the lack of coherent locking between mapping's nrpages and shmem's swapped count. There's a window in shmem_writepage(), between lowering nrpages in shmem_delete_from_page_cache() and then raising swapped count, when the freed count appears to be +1 when it should be 0, and then the asymmetry stops it from being corrected with -1 before hitting the BUG. One answer is coherent locking: using tree_lock throughout, without info->lock; reasonable, but the raw_spin_lock in percpu_counter_add() on used_blocks makes that messier than expected. Another answer may be a further effort to eliminate the weird shmem_recalc_inode() altogether, but previous attempts at that failed. So far undecided, but for now change the BUG_ON to WARN_ON: in usual circumstances it remains a useful consistency check. Signed-off-by:
Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Hugh Dickins authored
Fuzzing with trinity hit the "impossible" VM_BUG_ON(error) (which Fedora has converted to WARNING) in shmem_getpage_gfp(): WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70() Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49 Call Trace: warn_slowpath_common+0x7f/0xc0 warn_slowpath_null+0x1a/0x20 shmem_getpage_gfp+0xa5c/0xa70 shmem_fault+0x4f/0xa0 __do_fault+0x71/0x5c0 handle_pte_fault+0x97/0xae0 handle_mm_fault+0x289/0x350 __do_page_fault+0x18e/0x530 do_page_fault+0x2b/0x50 page_fault+0x28/0x30 tracesys+0xe1/0xe6 Thanks to Johannes for pointing to truncation: free_swap_and_cache() only does a trylock on the page, so the page lock we've held since before confirming swap is not enough to protect against truncation. What cleanup is needed in this case? Just delete_from_swap_cache(), which takes care of the memcg uncharge. Signed-off-by:Dave Jones <davej@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Will Deacon authored
kmap_to_page returns the corresponding struct page for a virtual address of an arbitrary mapping. This works by checking whether the address falls in the pkmap region and using the pkmap page tables instead of the linear mapping if appropriate. Unfortunately, the bounds checking means that PKMAP_ADDR(LAST_PKMAP) is incorrectly treated as a highmem address and we can end up walking off the end of pkmap_page_table and subsequently passing junk to pte_page. This patch fixes the bound check to stay within the pkmap tables. Signed-off-by:
Will Deacon <will.deacon@arm.com> Cc: Mel Gorman <mgorman@suse.de> Signed-off-by:
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Mel Gorman authored
Jiri Slaby reported the following: (It's an effective revert of "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures".) Given kswapd had hours of runtime in ps/top output yesterday in the morning and after the revert it's now 2 minutes in sum for the last 24h, I would say, it's gone. The intention of the patch in question was to compensate for the loss of lumpy reclaim. Part of the reason lumpy reclaim worked is because it aggressively reclaimed pages and this patch was meant to be a sane compromise. When compaction fails, it gets deferred and both compaction and reclaim/compaction is deferred avoid excessive reclaim. However, since commit c6543459 ("mm: remove __GFP_NO_KSWAPD"), kswapd is woken up each time and continues reclaiming which was not taken into account when the patch was developed. Attempts to address the problem ended up just changing the shape of the problem instead of fixing it. The release window gets closer and while a THP allocation failing is not a major problem, kswapd chewing up a lot of CPU is. This patch reverts commit 83fde0f2 ("mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures") and will be revisited in the future. Signed-off-by:
Mel Gorman <mgorman@suse.de> Cc: Zdenek Kabelac <zkabelac@redhat.com> Tested-by:
Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Rik van Riel <riel@redhat.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Johannes Hirte <johannes.hirte@fem.tu-ilmenau.de> Signed-off-by:
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Randy Dunlap authored
Fix rapidio kernel-doc warnings: Warning(drivers/rapidio/rio.c:415): No description found for parameter 'local' Warning(drivers/rapidio/rio.c:415): Excess function parameter 'lstart' description in 'rio_map_inb_region' Warning(include/linux/rio.h:290): No description found for parameter 'switches' Warning(include/linux/rio.h:290): No description found for parameter 'destid_table' Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Cc: Matt Porter <mporter@kernel.crashing.org> Acked-by:
Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by:
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Xiaotian Feng authored
There's a name leak introduced by commit 91a27b2a ("vfs: define struct filename and have getname() return it"). Add the missing putname. [akpm@linux-foundation.org: cleanup] Signed-off-by:
Xiaotian Feng <dannyfeng@tencent.com> Reviewed-by:
Jeff Layton <jlayton@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Hugh Dickins authored
When MEMCG is configured on (even when it's disabled by boot option), when adding or removing a page to/from its lru list, the zone pointer used for stats updates is nowadays taken from the struct lruvec. (On many configurations, calculating zone from page is slower.) But we have no code to update all the lruvecs (per zone, per memcg) when a memory node is hotadded. Here's an extract from the oops which results when running numactl to bind a program to a newly onlined node: BUG: unable to handle kernel NULL pointer dereference at 0000000000000f60 IP: __mod_zone_page_state+0x9/0x60 Pid: 1219, comm: numactl Not tainted 3.6.0-rc5+ #180 Bochs Bochs Process numactl (pid: 1219, threadinfo ffff880039abc000, task ffff8800383c4ce0) Call Trace: __pagevec_lru_add_fn+0xdf/0x140 pagevec_lru_move_fn+0xb1/0x100 __pagevec_lru_add+0x1c/0x30 lru_add_drain_cpu+0xa3/0x130 lru_add_drain+0x2f/0x40 ... The natural solution might be to use a memcg callback whenever memory is hotadded; but that solution has not been scoped out, and it happens that we do have an easy location at which to update lruvec->zone. The lruvec pointer is discovered either by mem_cgroup_zone_lruvec() or by mem_cgroup_page_lruvec(), and both of those do know the right zone. So check and set lruvec->zone in those; and remove the inadequate attempt to set lruvec->zone from lruvec_init(), which is called before NODE_DATA(node) has been allocated in such cases. Ah, there was one exceptionr. For no particularly good reason, mem_cgroup_force_empty_list() has its own code for deciding lruvec. Change it to use the standard mem_cgroup_zone_lruvec() and mem_cgroup_get_lru_size() too. In fact it was already safe against such an oops (the lru lists in danger could only be empty), but we're better proofed against future changes this way. I've marked this for stable (3.6) since we introduced the problem in 3.5 (now closed to stable); but I have no idea if this is the only fix needed to get memory hotadd working with memcg in 3.6, and received no answer when I enquired twice before. Reported-by:Tang Chen <tangchen@cn.fujitsu.com> Signed-off-by:
Johannes Weiner <hannes@cmpxchg.org> Acked-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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David Rientjes authored
Using a cross-compiler to fix another issue, the following build error occurred for mips defconfig: arch/mips/fw/arc/misc.c: In function 'ArcHalt': arch/mips/fw/arc/misc.c:25:2: error: implicit declaration of function 'local_irq_disable' Fix it up by including irqflags.h. Signed-off-by:
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Michal Hocko authored
oom_badness() takes a totalpages argument which says how many pages are available and it uses it as a base for the score calculation. The value is calculated by mem_cgroup_get_limit which considers both limit and total_swap_pages (resp. memsw portion of it). This is usually correct but since fe35004f ("mm: avoid swapping out with swappiness==0") we do not swap when swappiness is 0 which means that we cannot really use up all the totalpages pages. This in turn confuses oom score calculation if the memcg limit is much smaller than the available swap because the used memory (capped by the limit) is negligible comparing to totalpages so the resulting score is too small if adj!=0 (typically task with CAP_SYS_ADMIN or non zero oom_score_adj). A wrong process might be selected as result. The problem can be worked around by checking mem_cgroup_swappiness==0 and not considering swap at all in such a case. Signed-off-by:
Michal Hocko <mhocko@suse.cz> Acked-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by:
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David Rientjes authored
do_wp_page() sets mmun_called if mmun_start and mmun_end were initialized and, if so, may call mmu_notifier_invalidate_range_end() with these values. This doesn't prevent gcc from emitting a build warning though: mm/memory.c: In function `do_wp_page': mm/memory.c:2530: warning: `mmun_start' may be used uninitialized in this function mm/memory.c:2531: warning: `mmun_end' may be used uninitialized in this function It's much easier to initialize the variables to impossible values and do a simple comparison to determine if they were initialized to remove the bool entirely. Signed-off-by:
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Michel Lespinasse authored
Iterating over the vma->anon_vma_chain without anon_vma_lock may cause NULL ptr deref in anon_vma_interval_tree_verify(), because the node in the chain might have been removed. BUG: unable to handle kernel paging request at fffffffffffffff0 IP: [<ffffffff8122c29c>] anon_vma_interval_tree_verify+0xc/0xa0 PGD 4e28067 PUD 4e29067 PMD 0 Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC CPU 0 Pid: 9050, comm: trinity-child64 Tainted: G W 3.7.0-rc2-next-20121025-sasha-00001-g673f98e-dirty #77 RIP: 0010: anon_vma_interval_tree_verify+0xc/0xa0 Process trinity-child64 (pid: 9050, threadinfo ffff880045f80000, task ffff880048eb0000) Call Trace: validate_mm+0x58/0x1e0 vma_adjust+0x635/0x6b0 __split_vma.isra.22+0x161/0x220 split_vma+0x24/0x30 sys_madvise+0x5da/0x7b0 tracesys+0xe1/0xe6 RIP anon_vma_interval_tree_verify+0xc/0xa0 CR2: fffffffffffffff0 Figured out by Bob Liu. Reported-by:Sasha Levin <sasha.levin@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by:
Michel Lespinasse <walken@google.com> Reviewed-by:
Rik van Riel <riel@redhat.com> Signed-off-by:
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Takashi Iwai authored
The commit [ad756a16: KVM: VMX: Implement PCID/INVPCID for guests with EPT] introduced the unconditional access to SECONDARY_VM_EXEC_CONTROL, and this triggers kernel warnings like below on old CPUs: vmwrite error: reg 401e value a0568000 (err 12) Pid: 13649, comm: qemu-kvm Not tainted 3.7.0-rc4-test2+ #154 Call Trace: [<ffffffffa0558d86>] vmwrite_error+0x27/0x29 [kvm_intel] [<ffffffffa054e8cb>] vmcs_writel+0x1b/0x20 [kvm_intel] [<ffffffffa054f114>] vmx_cpuid_update+0x74/0x170 [kvm_intel] [<ffffffffa03629b6>] kvm_vcpu_ioctl_set_cpuid2+0x76/0x90 [kvm] [<ffffffffa0341c67>] kvm_arch_vcpu_ioctl+0xc37/0xed0 [kvm] [<ffffffff81143f7c>] ? __vunmap+0x9c/0x110 [<ffffffffa0551489>] ? vmx_vcpu_load+0x39/0x1a0 [kvm_intel] [<ffffffffa0340ee2>] ? kvm_arch_vcpu_load+0x52/0x1a0 [kvm] [<ffffffffa032dcd4>] ? vcpu_load+0x74/0xd0 [kvm] [<ffffffffa032deb0>] kvm_vcpu_ioctl+0x110/0x5e0 [kvm] [<ffffffffa032e93d>] ? kvm_dev_ioctl+0x4d/0x4a0 [kvm] [<ffffffff8117dc6f>] do_vfs_ioctl+0x8f/0x530 [<ffffffff81139d76>] ? remove_vma+0x56/0x60 [<ffffffff8113b708>] ? do_munmap+0x328/0x400 [<ffffffff81187c8c>] ? fget_light+0x4c/0x100 [<ffffffff8117e1a1>] sys_ioctl+0x91/0xb0 [<ffffffff815a942d>] system_call_fastpath+0x1a/0x1f This patch adds a check for the availability of secondary exec control to avoid these warnings. Cc: <stable@vger.kernel.org> [v3.6+] Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking updates from David Miller: 1) tx_filtered/ps_tx_buf queues need to be accessed with the SKB queue lock, from Arik Nemtsov. 2) Don't call 802.11 driver's filter configure method until it's actually open, from Felix Fietkau. 3) Use ieee80211_free_txskb otherwise we leak control information. From Johannes Berg. 4) Fix memory leak in bluetooth UUID removal,f rom Johan Hedberg. 5) The shift mask trick doesn't work properly when 'optname' is out of range in do_ip_setsockopt(). Use a straightforward switch statement instead, the compiler emits essentially the same code but without the missing range check. From Xi Wang. 6) Fix when we call tcp_replace_ts_recent() otherwise we can erroneously accept a too-high tsval. From Eric Dumazet. 7) VXLAN bug fixes, mostly to do with VLAN header length handling, from Alexander Duyck. 8) Missing return value initialization for IPV6_MINHOPCOUNT socket option handling. From Hannes Frederic. 9) Fix regression in tasklet handling in jme/ksz884x/xilinx drivers, from Xiaotian Feng. 10) At smsc911x driver init time, we don't know if the chip is in word swap mode or not. However we do need to wait for the control register's ready bit to be set before we program any other part of the chip. Adjust the wait loop to account for this. From Kamlakant Patel. 11) Revert erroneous MDIO bus unregister change to mdio-bitbang.c 12) Fix memory leak in /proc/net/sctp/, from Tommi Rantala. 13) tilegx driver registers IRQ with NULL name, oops, from Simon Marchi. 14) TCP metrics hash table kzalloc() based allocation can fail, back down to using vmalloc() if it does. From Eric Dumazet. 15) Fix packet steering out-of-order delivery regression, from Tom Herbert. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (40 commits) net-rps: Fix brokeness causing OOO packets tcp: handle tcp_net_metrics_init() order-5 memory allocation failures batman-adv: process broadcast packets in BLA earlier batman-adv: don't add TEMP clients belonging to other backbone nodes batman-adv: correctly pass the client flag on tt_response batman-adv: fix tt_global_entries flags update tilegx: request_irq with a non-null device name net: correct check in dev_addr_del() tcp: fix retransmission in repair mode sctp: fix /proc/net/sctp/ memory leak Revert "drivers/net/phy/mdio-bitbang.c: Call mdiobus_unregister before mdiobus_free" net/smsc911x: Fix ready check in cases where WORD_SWAP is needed drivers/net: fix tasklet misuse issue ipv4/ip_vti.c: VTI fix post-decryption forwarding brcmfmac: fix typo in CONFIG_BRCMISCAN vxlan: Update hard_header_len based on lowerdev when instantiating VXLAN vxlan: fix a typo. ipv6: setsockopt(IPIPPROTO_IPV6, IPV6_MINHOPCOUNT) forgot to set return value doc/net: Fix typo in netdev-features.txt vxlan: Fix error that was resulting in VXLAN MTU size being 10 bytes too large ... -
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirelessDavid S. Miller authored
John W. Linville says: ==================== This batch of fixes is intended for the 3.7 stream... This includes a pull of the Bluetooth tree. Gustavo says: "A few important fixes to go into 3.7. There is a new hw support by Marcos Chaparro. Johan added a memory leak fix and hci device index list fix. Also Marcel fixed a race condition in the device set up that was prevent the bt monitor to work properly. Last, Paulo Sérgio added a fix to the error status when pairing for LE fails. This was prevent userspace to work to handle the failure properly." Regarding the mac80211 pull, Johannes says: "I have a locking fix for some SKB queues, a variable initialization to avoid crashes in a certain failure case, another free_txskb fix from Felix and another fix from him to avoid calling a stopped driver, a fix for a (very unlikely) memory leak and a fix to not send null data packets when resuming while not associated." Regarding the iwlwifi pull, Johannes says: "Two more fixes for iwlwifi ... one to use ieee80211_free_txskb(), and one to check DMA mapping errors, please pull." On top of that, Johannes also included a wireless regulatory fix to allow 40 MHz on channels 12 and 13 in world roaming mode. Also, Hauke Mehrtens fixes a #ifdef typo in brcmfmac. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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