- 18 Apr, 2013 1 commit
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Ludovic Desroches authored
The BUG_ON() directive is triggered probably due to a latency modification following inclusion of commit c10d7367 ("softirq: reduce latencies"). This condition has not been met before 3.9-rc1 and doesn't trigger without this patch. We now make sure that DMA channel is idle before calling atc_complete_all() which makes the BUG_ON() "protection" useless. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 17 Apr, 2013 24 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linuxLinus Torvalds authored
Pull idle patches from Len Brown: "A pair of small patches for 3.9-rc7. This CPU-id should have been included in the ones that we updated earlier in 3.9. This pair of patches will allow this flavor of Haswell to behave like the other flavors." * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: additional Haswell CPU-id intel_idle: additional Haswell CPU-id
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Linus Torvalds authored
Pull misc fixes from Andrew Morton: "Ten fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: kernel/signal.c: stop info leak via the tkill and the tgkill syscalls mm/vmscan: fix error return in kswapd_run() hfsplus: fix potential overflow in hfsplus_file_truncate() avr32: fix build error in atstk1006_defconfig hugetlbfs: add swap entry check in follow_hugetlb_page() fs/binfmt_elf.c: fix hugetlb memory check in vma_dump_size() hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB) checkpatch: fix stringification macro defect drivers/video/mmp/core.c: fix use-after-free bug thinkpad-acpi: kill hotkey_thread_mutex
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Emese Revfy authored
This fixes a kernel memory contents leak via the tkill and tgkill syscalls for compat processes. This is visible in the siginfo_t->_sifields._rt.si_sigval.sival_ptr field when handling signals delivered from tkill. The place of the infoleak: int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) { ... put_user_ex(ptr_to_compat(from->si_ptr), &to->si_ptr); ... } Signed-off-by: Emese Revfy <re.emese@gmail.com> Reviewed-by: PaX Team <pageexec@freemail.hu> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Serge Hallyn <serge.hallyn@canonical.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Xishi Qiu authored
Fix the error return value in kswapd_run(). The bug was introduced by commit d5dc0ad9 ("mm/vmscan: fix error number for failed kthread"). Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Reviewed-by: Rik van Riel <riel@redhat.com> Reported-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Vyacheslav Dubeyko authored
Change a u32 to loff_t hfsplus_file_truncate(). Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Josh Wu authored
fixed the following compile error when use avr32 atstk1006_defconfig: drivers/mtd/nand/atmel_nand.c: In function 'pmecc_err_location': drivers/mtd/nand/atmel_nand.c:639: error: implicit declaration of function 'writel_relaxed' which was introduced by commit 1c7b874d ("mtd: at91: atmel_nand: add Programmable Multibit ECC controller support"). The PMECC for nand flash code uses writel_relaxed(). But in avr32, there is no macro "writel_relaxed" defined. This patch add writex_relaxed macro definitions. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Havard Skinnemoen <havard@skinnemoen.net> Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Naoya Horiguchi authored
With applying the previous patch "hugetlbfs: stop setting VM_DONTDUMP in initializing vma(VM_HUGETLB)" to reenable hugepage coredump, if a memory error happens on a hugepage and the affected processes try to access the error hugepage, we hit VM_BUG_ON(atomic_read(&page->_count) <= 0) in get_page(). The reason for this bug is that coredump-related code doesn't recognise "hugepage hwpoison entry" with which a pmd entry is replaced when a memory error occurs on a hugepage. In other words, physical address information is stored in different bit layout between hugepage hwpoison entry and pmd entry, so follow_hugetlb_page() which is called in get_dump_page() returns a wrong page from a given address. The expected behavior is like this: absent is_swap_pte FOLL_DUMP Expected behavior ------------------------------------------------------------------- true false false hugetlb_fault false true false hugetlb_fault false false false return page true false true skip page (to avoid allocation) false true true hugetlb_fault false false true return page With this patch, we can call hugetlb_fault() and take proper actions (we wait for migration entries, fail with VM_FAULT_HWPOISON_LARGE for hwpoisoned entries,) and as the result we can dump all hugepages except for hwpoisoned ones. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Rik van Riel <riel@redhat.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [2.6.34+?] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Naoya Horiguchi authored
Documentation/filesystems/proc.txt says about coredump_filter bitmask, Note bit 0-4 doesn't effect any hugetlb memory. hugetlb memory are only effected by bit 5-6. However current code can go into the subsequent flag checks of bit 0-4 for vma(VM_HUGETLB). So this patch inserts 'return' and makes it work as written in the document. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [3.7+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Naoya Horiguchi authored
Currently we fail to include any data on hugepages into coredump, because VM_DONTDUMP is set on hugetlbfs's vma. This behavior was recently introduced by commit 314e51b9 ("mm: kill vma flag VM_RESERVED and mm->reserved_vm counter"). This looks to me a serious regression, so let's fix it. Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@vger.kernel.org> [3.7+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Joe Perches authored
Fix checkpatch misreporting defect with stringification macros ERROR: Macros with complex values should be enclosed in parenthesis #27: FILE: arch/arm/include/asm/kgdb.h:41: +#define ___to_string(X) #X Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Vincent Stehlé <v-stehle@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andrei Epure authored
Found with coccinelle. Signed-off-by: Andrei Epure <epure.andrei@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Oleg Nesterov authored
hotkey_kthread() does try_to_freeze() under hotkey_thread_mutex. We can simply kill this mutex, hotkey_poll_stop_sync() does not need to serialize with hotkey_kthread(). When kthread_stop() returns the thread is already dead, it called do_exit()->complete_vfork_done(). Reported-by: Artem Savkov <artem.savkov@gmail.com> Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: Matthew Garrett <matthew.garrett@nebula.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Reviewed-by: Mandeep Singh Baines <msb@chromium.org> Cc: Aaron Lu <aaron.lu@intel.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-clientLinus Torvalds authored
Pull Ceph fix from Sage Weil: "It's a simple fix for a hard to hit race, but low-risk and clearly correct" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: rbd: do a safe list traversal in rbd_img_request_submit()
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Marc Zyngier authored
In the very unlikely event where a guest would be foolish enough to *read* from a write-only cache maintainance register, we end up with preemption disabled, due to a misplaced get_cpu(). Just move the "is_write" test outside of the critical section. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alex Elder authored
It's possible that the reference to the object request dropped inside the loop in rbd_img_request_submit() will be the last one, in which case the content of the object pointer can't be trusted. Use a safe form of the object request list traversal to avoid problems. This resolves: http://tracker.ceph.com/issues/4705Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Fix erroneous netfilter drop of SIP packets generated by some Cisco phones, from Patrick McHardy. 2) Fix netfilter IPSET refcounting in list_set_add(), from Jozsef Kadlecsik. 3) Fix TCP syncookies route lookup key, we don't use the same values we would use for the usual SYN receive processing, from Dmitry Popov. 4) Fix NULL deref in bond_slave_netdev_event(), from Nikolay Aleksandrov. 5) When bonding enslave fails, we can forget to clear the IFF_BONDING bit, fix also from Nikolay Aleksandrov. 6) skb->csum_start is 16-bits, which is almost always just fine. But if we reallocate the headroom of an SKB this can push the skb->csum_start value outside of it's valid range. This can easily happen when collapsing multiple SKBs from the retransmit queue together. Fix from Thomas Graf. 7) Fix NULL deref in be2net driver due to missing check of __vlan_put_tag() return value, from Ivan Vecera. 8) tun_set_iff() returns zero instead of error code on failure, fix from Wei Yongjun. 9) Like GARP, 802 MRP needs to hold the app->lock when adding MAD events and queueing PDUs. Fix from David Ward. 10) Build fix, MVMDIO needs PHYLIB, from Thomas Petazzoni.. 11) Fix mac80211 static with ipv6 modular build, from Cong Wang. 12) If userland specifies a path cost explicitly, do not override it when the carrier state changes. From Stephen Hemminger. 13) mvnets calculates the TX queue to use incorrectly resulting in garbage pointer derefs and crashes, fix from Willy Tarreau. 14) cdc_mbim does erroneous sizeof(ETH_HLEN). Fix from Bjorn Mork. 15) IP fragmentation can leak a refcount-less route out from an RCU protected section. This results in crashes and all sorts of hard to diagnose behavior. Fix from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (24 commits) qlcnic: fix beaconing test for 82xx adapter net: drop dst before queueing fragments net: fec: fix regression in link change accounting net: cdc_mbim: remove bogus sizeof() drivers: net: ethernet: cpsw: get slave VLAN id from slave node instead of cpsw node net: mvneta: fix improper tx queue usage in mvneta_tx() esp4: fix error return code in esp_output() bridge: make user modified path cost sticky ipv6: statically link register_inet6addr_notifier() net: mvmdio: add select PHYLIB net/802/mrp: fix possible race condition when calling mrp_pdu_queue() tuntap: fix error return code in tun_set_iff() be2net: take care of __vlan_put_tag return value can: sja1000: fix handling on dt properties on little endian systems can: mcp251x: add missing IRQF_ONESHOT to request_threaded_irq netfilter: nf_nat: fix race when unloading protocol modules tcp: Reallocate headroom if it would overflow csum_start stmmac: prevent interrupt loop with MMC RX IPC Counter bonding: IFF_BONDING is not stripped on enslave failure bonding: fix netdev event NULL pointer dereference ...
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Linus Torvalds authored
Commit b4cbb197 ("vm: add vm_iomap_memory() helper function") added a helper function wrapper around io_remap_pfn_range(), and every other architecture defined it in <asm/pgtable.h>. The s390 choice of <asm/io.h> may make sense, but is not very convenient for this case, and gratuitous differences like that cause unexpected errors like this: mm/memory.c: In function 'vm_iomap_memory': mm/memory.c:2439:2: error: implicit declaration of function 'io_remap_pfn_range' [-Werror=implicit-function-declaration] Glory be the kbuild test robot who noticed this, bisected it, and reported it to the guilty parties (ie me). Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Himanshu Madhani authored
o Commit 319ecf12 ("qlcnic: 83xx sysfs routines") introduced regression for beaconing test while refactoring 82xx code. This patch is to revert code to fix beaconing test for 82xx adapter. Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
Commit 4a94445c (net: Use ip_route_input_noref() in input path) added a bug in IP defragmentation handling, as non refcounted dst could escape an RCU protected section. Commit 64f3b9e2 (net: ip_expire() must revalidate route) fixed the case of timeouts, but not the general problem. Tom Parkin noticed crashes in UDP stack and provided a patch, but further analysis permitted us to pinpoint the root cause. Before queueing a packet into a frag list, we must drop its dst, as this dst has limited lifetime (RCU protected) When/if a packet is finally reassembled, we use the dst of the very last skb, still protected by RCU and valid, as the dst of the reassembled packet. Use same logic in IPv6, as there is no need to hold dst references. Reported-by: Tom Parkin <tparkin@katalix.com> Tested-by: Tom Parkin <tparkin@katalix.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.linaro.org/people/rmk/linux-armLinus Torvalds authored
Pull ARM fix from Russell King: "A build fix for an incomplete change to the ARM cpu suspend code" * branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: Do 15e0d9e3 (ARM: pm: let platforms select cpu_suspend support) properly
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Marcelo Tosatti: "PPC and ARM KVM fixes" * git://git.kernel.org/pub/scm/virt/kvm/kvm: ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write ARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting kvm/ppc/e500: eliminate tlb_refs kvm/ppc/e500: g2h_tlb1_map: clear old bit before setting new bit kvm/ppc/e500: h2g_tlb1_rmap: esel 0 is valid kvm/powerpc/e500mc: fix tlb invalidation on cpu migration
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git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixesLinus Torvalds authored
Pull powerpc fixes from Stephen Rothwell: "Three regresions in the PowerPC code. One from v3.7 the others from this merge window." * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes: powerpc: add a missing label in resume_kernel powerpc: Fix audit crash due to save/restore PPR changes powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuildLinus Torvalds authored
Pull kbuild fix from Michal Marek: "Fix for a missing dependency when generating scripts/mod/devicetable-offsets.h. This dependency got introduced in v3.9-rc1." * 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: generate generic headers before recursing into scripts
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "Two small fixups to the Wacom driver" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: wacom - correct reported resolution for Intuos4 Wireless Input: wacom - fix "can not retrieve extra class descriptor" for 24HDT
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- 16 Apr, 2013 6 commits
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git://github.com/columbia/linux-kvm-armMarcelo Tosatti authored
* 'kvm-arm-fixes-3.9' of git://github.com/columbia/linux-kvm-arm: ARM: KVM: fix L_PTE_S2_RDWR to actually be Read/Write ARM: KVM: fix KVM_CAP_ARM_SET_DEVICE_ADDR reporting Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Linus Torvalds authored
Various drivers end up replicating the code to mmap() their memory buffers into user space, and our core memory remapping function may be very flexible but it is unnecessarily complicated for the common cases to use. Our internal VM uses pfn's ("page frame numbers") which simplifies things for the VM, and allows us to pass physical addresses around in a denser and more efficient format than passing a "phys_addr_t" around, and having to shift it up and down by the page size. But it just means that drivers end up doing that shifting instead at the interface level. It also means that drivers end up mucking around with internal VM things like the vma details (vm_pgoff, vm_start/end) way more than they really need to. So this just exports a function to map a certain physical memory range into user space (using a phys_addr_t based interface that is much more natural for a driver) and hides all the complexity from the driver. Some drivers will still end up tweaking the vm_page_prot details for things like prefetching or cacheability etc, but that's actually relevant to the driver, rather than caring about what the page offset of the mapping is into the particular IO memory region. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Marc Zyngier authored
Looks like our L_PTE_S2_RDWR definition is slightly wrong, and is actually write only (see ARM ARM Table B3-9, Stage 2 control of access permissions). Didn't make a difference for normal pages, as we OR the flags together, but I'm still wondering how it worked for Stage-2 mapped devices, such as the GIC. Brown paper bag time, again. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
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Marc Zyngier authored
Commit 3401d546 (KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR ioctl) added support for the KVM_CAP_ARM_SET_DEVICE_ADDR capability, but failed to add a break in the relevant case statement, returning the number of CPUs instead. Luckilly enough, the CONFIG_NR_CPUS=0 patch hasn't been merged yet (https://lkml.org/lkml/diff/2012/3/31/131/1), so the bug wasn't noticed. Just give it a break! Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
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Lucas Stach authored
A link-down isn't properly saved in the FEC state, so we wouldn't restart the FEC after a repeated link-up. Regression was introduced with commit d97e7497 "net: fec: restart the FEC when PHY speed changes" Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Tested-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Bjørn Mork authored
The intention was to test against the constant, not the size of the constant. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
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- 15 Apr, 2013 9 commits
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Mugunthan V N authored
Dual EMAC slave VLAN id must be got from slave node instead of cpsw node as VLAN id for each slave will be different. Reported-by: Mark Jackson <mpfj-list@mimc.co.uk> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Willy Tarreau authored
mvneta_tx() was using a static tx queue number causing crashes as soon as a little bit of traffic was sent via the interface, because it is normally expected that the same queue should be used as in dev_queue_xmit(). As suggested by Ben Hutchings, let's use skb_get_queue_mapping() to get the proper Tx queue number, and use alloc_etherdev_mqs() instead of alloc_etherdev_mq() to create the queues. Both my Mirabox and my OpenBlocks AX3 used to crash without this patch and don't anymore with it. The issue appeared in 3.8 but became more visible after the fix allowing GSO to be enabled. Original work was done by Dmitri Epshtein and Thomas Petazzoni. I just adapted it to take care of Ben's comments. Signed-off-by: Willy Tarreau <w@1wt.eu> Cc: Dmitri Epshtein <dima@marvell.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Cc: Ben Hutchings <bhutchings@solarflare.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Wei Yongjun authored
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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stephen hemminger authored
Keep a STP port path cost value if it was set by a user. Don't replace it with the link-speed based path cost whenever the link goes down and comes back up. Reported-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Jason Gerecke authored
Reported-by: Przemo Firszt <przemo@firszt.eu> Signed-off-by: Jason Gerecke <killertofu@gmail.com> Tested-by: Przemo Firszt <przemo@firszt.eu> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Linus Torvalds authored
Merge branches 'timers-urgent-for-linus', 'irq-urgent-for-linus' and 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull {timer,irq,core} fixes from Thomas Gleixner: - timer: bug fix for a cpu hotplug race. - irq: single bugfix for a wrong return value, which prevents the calling function to invoke the software fallback. - core: bugfix which plugs two race confitions which can cause hotplug per cpu threads to end up on the wrong cpu. * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: hrtimer: Don't reinitialize a cpu_base lock on CPU_UP * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: gic: fix irq_trigger return * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: kthread: Prevent unpark race which puts threads on the wrong cpu
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Kevin Hao authored
A label 0 was missed in the patch a9c4e541 (powerpc/kprobe: Complete kprobe and migrate exception frame). This will cause the kernel branch to an undetermined address if there really has a conflict when updating the thread flags. Signed-off-by: Kevin Hao <haokexin@gmail.com> Cc: stable@vger.kernel.org Acked-By: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
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Alistair Popple authored
The current mainline crashes when hitting userspace with the following: kernel BUG at kernel/auditsc.c:1769! cpu 0x1: Vector: 700 (Program Check) at [c000000023883a60] pc: c0000000001047a8: .__audit_syscall_entry+0x38/0x130 lr: c00000000000ed64: .do_syscall_trace_enter+0xc4/0x270 sp: c000000023883ce0 msr: 8000000000029032 current = 0xc000000023800000 paca = 0xc00000000f080380 softe: 0 irq_happened: 0x01 pid = 1629, comm = start_udev kernel BUG at kernel/auditsc.c:1769! enter ? for help [c000000023883d80] c00000000000ed64 .do_syscall_trace_enter+0xc4/0x270 [c000000023883e30] c000000000009b08 syscall_dotrace+0xc/0x38 --- Exception: c00 (System Call) at 0000008010ec50dc Bisecting found the following patch caused it: commit 44e9309f Author: Haren Myneni <haren@linux.vnet.ibm.com> powerpc: Implement PPR save/restore It was found this patch corrupted r9 when calling SET_DEFAULT_THREAD_PPR() Using r10 as a scratch register instead of r9 solved the problem. Signed-off-by: Alistair Popple <alistair@popple.id.au> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
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Linus Torvalds authored
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