- 22 Nov, 2016 1 commit
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Misc fixes: - two fixes to make (very) old Intel CPUs boot reliably - fix the intel-mid driver and rename it - two KASAN false positive fixes - an FPU fix - two sysfb fixes - two build fixes related to new toolchain versions" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/platform/intel-mid: Rename platform_wdt to platform_mrfld_wdt x86/build: Build compressed x86 kernels as PIE when !CONFIG_RELOCATABLE as well x86/platform/intel-mid: Register watchdog device after SCU x86/fpu: Fix invalid FPU ptrace state after execve() x86/boot: Fail the boot if !M486 and CPUID is missing x86/traps: Ignore high word of regs->cs in early_fixup_exception() x86/dumpstack: Prevent KASAN false positive warnings x86/unwind: Prevent KASAN false positive warnings in guess unwinder x86/boot: Avoid warning for zero-filling .bss x86/sysfb: Fix lfb_size calculation x86/sysfb: Add support for 64bit EFI lfb_base
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- 21 Nov, 2016 13 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-securityLinus Torvalds authored
Pull apparmor bugfix from James Morris: "This has a fix for a policy replacement bug that is fairly serious for apache mod_apparmor users, as it results in the wrong policy being applied on an network facing service" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: apparmor: fix change_hat not finding hat after policy replacement
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparcLinus Torvalds authored
Pull sparc fixes from David Miller: 1) With modern networking cards we can run out of 32-bit DMA space, so support 64-bit DMA addressing when possible on sparc64. From Dave Tushar. 2) Some signal frame validation checks are inverted on sparc32, fix from Andreas Larsson. 3) Lockdep tables can get too large in some circumstances on sparc64, add a way to adjust the size a bit. From Babu Moger. 4) Fix NUMA node probing on some sun4v systems, from Thomas Tai. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: drop duplicate header scatterlist.h lockdep: Limit static allocations if PROVE_LOCKING_SMALL is defined config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc sunbmac: Fix compiler warning sunqe: Fix compiler warnings sparc64: Enable 64-bit DMA sparc64: Enable sun4v dma ops to use IOMMU v2 APIs sparc64: Bind PCIe devices to use IOMMU v2 service sparc64: Initialize iommu_map_table and iommu_pool sparc64: Add ATU (new IOMMU) support sparc64: Add FORCE_MAX_ZONEORDER and default to 13 sparc64: fix compile warning section mismatch in find_node() sparc32: Fix inverted invalid_frame_pointer checks on sigreturns sparc64: Fix find_node warning if numa node cannot be found
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Clear congestion control state when changing algorithms on an existing socket, from Florian Westphal. 2) Fix register bit values in altr_tse_pcs portion of stmmac driver, from Jia Jie Ho. 3) Fix PTP handling in stammc driver for GMAC4, from Giuseppe CAVALLARO. 4) Fix udplite multicast delivery handling, it ignores the udp_table parameter passed into the lookups, from Pablo Neira Ayuso. 5) Synchronize the space estimated by rtnl_vfinfo_size and the space actually used by rtnl_fill_vfinfo. From Sabrina Dubroca. 6) Fix memory leak in fib_info when splitting nodes, from Alexander Duyck. 7) If a driver does a napi_hash_del() explicitily and not via netif_napi_del(), it must perform RCU synchronization as needed. Fix this in virtio-net and bnxt drivers, from Eric Dumazet. 8) Likewise, it is not necessary to invoke napi_hash_del() is we are also doing neif_napi_del() in the same code path. Remove such calls from be2net and cxgb4 drivers, also from Eric Dumazet. 9) Don't allocate an ID in peernet2id_alloc() if the netns is dead, from WANG Cong. 10) Fix OF node and device struct leaks in of_mdio, from Johan Hovold. 11) We cannot cache routes in ip6_tunnel when using inherited traffic classes, from Paolo Abeni. 12) Fix several crashes and leaks in cpsw driver, from Johan Hovold. 13) Splice operations cannot use freezable blocking calls in AF_UNIX, from WANG Cong. 14) Link dump filtering by master device and kind support added an error in loop index updates during the dump if we actually do filter, fix from Zhang Shengju. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (59 commits) tcp: zero ca_priv area when switching cc algorithms net: l2tp: Treat NET_XMIT_CN as success in l2tp_eth_dev_xmit ethernet: stmmac: make DWMAC_STM32 depend on it's associated SoC tipc: eliminate obsolete socket locking policy description rtnl: fix the loop index update error in rtnl_dump_ifinfo() l2tp: fix racy SOCK_ZAPPED flag check in l2tp_ip{,6}_bind() net: macb: add check for dma mapping error in start_xmit() rtnetlink: fix FDB size computation netns: fix get_net_ns_by_fd(int pid) typo af_unix: conditionally use freezable blocking calls in read net: ethernet: ti: cpsw: fix fixed-link phy probe deferral net: ethernet: ti: cpsw: add missing sanity check net: ethernet: ti: cpsw: fix secondary-emac probe error path net: ethernet: ti: cpsw: fix of_node and phydev leaks net: ethernet: ti: cpsw: fix deferred probe net: ethernet: ti: cpsw: fix mdio device reference leak net: ethernet: ti: cpsw: fix bad register access in probe error path net: sky2: Fix shutdown crash cfg80211: limit scan results cache size net sched filters: pass netlink message flags in event notification ...
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Florian Westphal authored
We need to zero out the private data area when application switches connection to different algorithm (TCP_CONGESTION setsockopt). When congestion ops get assigned at connect time everything is already zeroed because sk_alloc uses GFP_ZERO flag. But in the setsockopt case this contains whatever previous cc placed there. Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Gao Feng authored
The tc could return NET_XMIT_CN as one congestion notification, but it does not mean the packe is lost. Other modules like ipvlan, macvlan, and others treat NET_XMIT_CN as success too. So l2tp_eth_dev_xmit should add the NET_XMIT_CN check. Signed-off-by:
Gao Feng <gfree.wind@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Peter Robinson authored
There's not much point, except compile test, enabling the stmmac platform drivers unless the STM32 SoC is enabled. It's not useful without it. Signed-off-by:
Peter Robinson <pbrobinson@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Andy Shevchenko authored
Rename the watchdog platform library file to explicitly show that is used only on Intel Merrifield platforms. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20161118172723.179761-1-andriy.shevchenko@linux.intel.comSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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H.J. Lu authored
Since the bootloader may load the compressed x86 kernel at any address, it should always be built as PIE, not just when CONFIG_RELOCATABLE=y. Otherwise, linker in binutils 2.27 will optimize GOT load into the absolute address when building the compressed x86 kernel as a non-PIE executable. Signed-off-by:
H.J. Lu <hjl.tools@gmail.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org [ Small wording changes. ] Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Andy Shevchenko authored
Watchdog device in Intel Tangier relies on SCU to be present. It uses the SCU IPC channel to send commands and receive responses. If watchdog driver is initialized quite before SCU and a command has been sent the result is always an error like the following: intel_mid_wdt: Error stopping watchdog: 0xffffffed Register watchdog device whne SCU is ready to avoid described issue. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20161118165224.175514-1-andriy.shevchenko@linux.intel.com [ Small cleanups. ] Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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Yu-cheng Yu authored
Robert O'Callahan reported that after an execve PTRACE_GETREGSET NT_X86_XSTATE continues to return the pre-exec register values until the exec'ed task modifies FPU state. The test code is at: https://bugzilla.redhat.com/attachment.cgi?id=1164286. What is happening is fpu__clear() does not properly clear fpstate. Fix it by doing just that. Reported-by:
Robert O'Callahan <robert@ocallahan.org> Signed-off-by:
Yu-cheng Yu <yu-cheng.yu@intel.com> Cc: <stable@vger.kernel.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: David Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi V. Shankar <ravi.v.shankar@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1479402695-6553-1-git-send-email-yu-cheng.yu@intel.comSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Andy Lutomirski authored
Linux will have all kinds of sporadic problems on systems that don't have the CPUID instruction unless CONFIG_M486=y. In particular, sync_core() will explode. I believe that these kernels had a better chance of working before commit 05fb3c19 ("x86/boot: Initialize FPU and X86_FEATURE_ALWAYS even if we don't have CPUID"). That commit inadvertently fixed a serious bug: we used to fail to detect the FPU if CPUID wasn't present. Because we also used to forget to set X86_FEATURE_ALWAYS, we end up with no cpu feature bits set at all. This meant that alternative patching didn't do anything and, if paravirt was disabled, we could plausibly finish the entire boot process without calling sync_core(). Rather than trying to work around these issues, just have the kernel fail loudly if it's running on a CPUID-less 486, doesn't have CPUID, and doesn't have CONFIG_M486 set. Reported-by:
Matthew Whitehead <tedheadster@gmail.com> Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/70eac6639f23df8be5fe03fa1984aedd5d40077a.1479598603.git.luto@kernel.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Andy Lutomirski authored
On the 80486 DX, it seems that some exceptions may leave garbage in the high bits of CS. This causes sporadic failures in which early_fixup_exception() refuses to fix up an exception. As far as I can tell, this has been buggy for a long time, but the problem seems to have been exacerbated by commits: 1e02ce4c ("x86: Store a per-cpu shadow copy of CR4") e1bfc11c ("x86/init: Fix cr4_init_shadow() on CR4-less machines") This appears to have broken for as long as we've had early exception handling. [ Note to stable maintainers: This patch is needed all the way back to 3.4, but it will only apply to 4.6 and up, as it depends on commit: 0e861fbb ("x86/head: Move early exception panic code into early_fixup_exception()") If you want to backport to kernels before 4.6, please don't backport the prerequisites (there was a big chain of them that rewrote a lot of the early exception machinery); instead, ask me and I can send you a one-liner that will apply. ] Reported-by:
Matthew Whitehead <tedheadster@gmail.com> Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Fixes: 4c5023a3 ("x86-32: Handle exception table entries during early boot") Link: http://lkml.kernel.org/r/cb32c69920e58a1a58e7b5cad975038a69c0ce7d.1479609510.git.luto@kernel.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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John Johansen authored
After a policy replacement, the task cred may be out of date and need to be updated. However change_hat is using the stale profiles from the out of date cred resulting in either: a stale profile being applied or, incorrect failure when searching for a hat profile as it has been migrated to the new parent profile. Fixes: 01e2b670 (failure to find hat) Fixes: 898127c3 (stale policy being applied) Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=1000287 Cc: stable@vger.kernel.org Signed-off-by:
John Johansen <john.johansen@canonical.com> Signed-off-by:
James Morris <james.l.morris@oracle.com>
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- 20 Nov, 2016 10 commits
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Linus Torvalds authored
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: "A few more ARM fixes: - the assembly backtrace code suffers problems with the new printk() implementation which assumes that kernel messages without KERN_CONT should have newlines inserted between them. Fix this. - fix a section naming error - ".init.text" rather than ".text.init" - preallocate DMA debug memory at core_initcall() time rather than fs_initcall(), as we have some core drivers that need to use DMA mapping - and that triggers a kernel warning from the DMA debug code. - fix XIP kernels after the ro_after_init changes made this data permanently read-only" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: Fix XIP kernels ARM: 8628/1: dma-mapping: preallocate DMA-debug hash tables in core_initcall ARM: 8624/1: proc-v7m.S: fix init section name ARM: fix backtrace
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Jon Paul Maloy authored
The comment block in socket.c describing the locking policy is obsolete, and does not reflect current reality. We remove it in this commit. Since the current locking policy is much simpler and follows a mainstream approach, we see no need to add a new description. Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Zhang Shengju authored
If the link is filtered out, loop index should also be updated. If not, loop index will not be correct. Fixes: dc599f76 ("net: Add support for filtering link dump by master device and kind") Signed-off-by:
Zhang Shengju <zhangshengju@cmss.chinamobile.com> Acked-by:
David Ahern <dsa@cumulusnetworks.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Guillaume Nault authored
Lock socket before checking the SOCK_ZAPPED flag in l2tp_ip6_bind(). Without lock, a concurrent call could modify the socket flags between the sock_flag(sk, SOCK_ZAPPED) test and the lock_sock() call. This way, a socket could be inserted twice in l2tp_ip6_bind_table. Releasing it would then leave a stale pointer there, generating use-after-free errors when walking through the list or modifying adjacent entries. BUG: KASAN: use-after-free in l2tp_ip6_close+0x22e/0x290 at addr ffff8800081b0ed8 Write of size 8 by task syz-executor/10987 CPU: 0 PID: 10987 Comm: syz-executor Not tainted 4.8.0+ #39 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014 ffff880031d97838 ffffffff829f835b ffff88001b5a1640 ffff8800081b0ec0 ffff8800081b15a0 ffff8800081b6d20 ffff880031d97860 ffffffff8174d3cc ffff880031d978f0 ffff8800081b0e80 ffff88001b5a1640 ffff880031d978e0 Call Trace: [<ffffffff829f835b>] dump_stack+0xb3/0x118 lib/dump_stack.c:15 [<ffffffff8174d3cc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:156 [< inline >] print_address_description mm/kasan/report.c:194 [<ffffffff8174d666>] kasan_report_error+0x1f6/0x4d0 mm/kasan/report.c:283 [< inline >] kasan_report mm/kasan/report.c:303 [<ffffffff8174db7e>] __asan_report_store8_noabort+0x3e/0x40 mm/kasan/report.c:329 [< inline >] __write_once_size ./include/linux/compiler.h:249 [< inline >] __hlist_del ./include/linux/list.h:622 [< inline >] hlist_del_init ./include/linux/list.h:637 [<ffffffff8579047e>] l2tp_ip6_close+0x22e/0x290 net/l2tp/l2tp_ip6.c:239 [<ffffffff850b2dfd>] inet_release+0xed/0x1c0 net/ipv4/af_inet.c:415 [<ffffffff851dc5a0>] inet6_release+0x50/0x70 net/ipv6/af_inet6.c:422 [<ffffffff84c4581d>] sock_release+0x8d/0x1d0 net/socket.c:570 [<ffffffff84c45976>] sock_close+0x16/0x20 net/socket.c:1017 [<ffffffff817a108c>] __fput+0x28c/0x780 fs/file_table.c:208 [<ffffffff817a1605>] ____fput+0x15/0x20 fs/file_table.c:244 [<ffffffff813774f9>] task_work_run+0xf9/0x170 [<ffffffff81324aae>] do_exit+0x85e/0x2a00 [<ffffffff81326dc8>] do_group_exit+0x108/0x330 [<ffffffff81348cf7>] get_signal+0x617/0x17a0 kernel/signal.c:2307 [<ffffffff811b49af>] do_signal+0x7f/0x18f0 [<ffffffff810039bf>] exit_to_usermode_loop+0xbf/0x150 arch/x86/entry/common.c:156 [< inline >] prepare_exit_to_usermode arch/x86/entry/common.c:190 [<ffffffff81006060>] syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259 [<ffffffff85e4d726>] entry_SYSCALL_64_fastpath+0xc4/0xc6 Object at ffff8800081b0ec0, in cache L2TP/IPv6 size: 1448 Allocated: PID = 10987 [ 1116.897025] [<ffffffff811ddcb6>] save_stack_trace+0x16/0x20 [ 1116.897025] [<ffffffff8174c736>] save_stack+0x46/0xd0 [ 1116.897025] [<ffffffff8174c9ad>] kasan_kmalloc+0xad/0xe0 [ 1116.897025] [<ffffffff8174cee2>] kasan_slab_alloc+0x12/0x20 [ 1116.897025] [< inline >] slab_post_alloc_hook mm/slab.h:417 [ 1116.897025] [< inline >] slab_alloc_node mm/slub.c:2708 [ 1116.897025] [< inline >] slab_alloc mm/slub.c:2716 [ 1116.897025] [<ffffffff817476a8>] kmem_cache_alloc+0xc8/0x2b0 mm/slub.c:2721 [ 1116.897025] [<ffffffff84c4f6a9>] sk_prot_alloc+0x69/0x2b0 net/core/sock.c:1326 [ 1116.897025] [<ffffffff84c58ac8>] sk_alloc+0x38/0xae0 net/core/sock.c:1388 [ 1116.897025] [<ffffffff851ddf67>] inet6_create+0x2d7/0x1000 net/ipv6/af_inet6.c:182 [ 1116.897025] [<ffffffff84c4af7b>] __sock_create+0x37b/0x640 net/socket.c:1153 [ 1116.897025] [< inline >] sock_create net/socket.c:1193 [ 1116.897025] [< inline >] SYSC_socket net/socket.c:1223 [ 1116.897025] [<ffffffff84c4b46f>] SyS_socket+0xef/0x1b0 net/socket.c:1203 [ 1116.897025] [<ffffffff85e4d685>] entry_SYSCALL_64_fastpath+0x23/0xc6 Freed: PID = 10987 [ 1116.897025] [<ffffffff811ddcb6>] save_stack_trace+0x16/0x20 [ 1116.897025] [<ffffffff8174c736>] save_stack+0x46/0xd0 [ 1116.897025] [<ffffffff8174cf61>] kasan_slab_free+0x71/0xb0 [ 1116.897025] [< inline >] slab_free_hook mm/slub.c:1352 [ 1116.897025] [< inline >] slab_free_freelist_hook mm/slub.c:1374 [ 1116.897025] [< inline >] slab_free mm/slub.c:2951 [ 1116.897025] [<ffffffff81748b28>] kmem_cache_free+0xc8/0x330 mm/slub.c:2973 [ 1116.897025] [< inline >] sk_prot_free net/core/sock.c:1369 [ 1116.897025] [<ffffffff84c541eb>] __sk_destruct+0x32b/0x4f0 net/core/sock.c:1444 [ 1116.897025] [<ffffffff84c5aca4>] sk_destruct+0x44/0x80 net/core/sock.c:1452 [ 1116.897025] [<ffffffff84c5ad33>] __sk_free+0x53/0x220 net/core/sock.c:1460 [ 1116.897025] [<ffffffff84c5af23>] sk_free+0x23/0x30 net/core/sock.c:1471 [ 1116.897025] [<ffffffff84c5cb6c>] sk_common_release+0x28c/0x3e0 ./include/net/sock.h:1589 [ 1116.897025] [<ffffffff8579044e>] l2tp_ip6_close+0x1fe/0x290 net/l2tp/l2tp_ip6.c:243 [ 1116.897025] [<ffffffff850b2dfd>] inet_release+0xed/0x1c0 net/ipv4/af_inet.c:415 [ 1116.897025] [<ffffffff851dc5a0>] inet6_release+0x50/0x70 net/ipv6/af_inet6.c:422 [ 1116.897025] [<ffffffff84c4581d>] sock_release+0x8d/0x1d0 net/socket.c:570 [ 1116.897025] [<ffffffff84c45976>] sock_close+0x16/0x20 net/socket.c:1017 [ 1116.897025] [<ffffffff817a108c>] __fput+0x28c/0x780 fs/file_table.c:208 [ 1116.897025] [<ffffffff817a1605>] ____fput+0x15/0x20 fs/file_table.c:244 [ 1116.897025] [<ffffffff813774f9>] task_work_run+0xf9/0x170 [ 1116.897025] [<ffffffff81324aae>] do_exit+0x85e/0x2a00 [ 1116.897025] [<ffffffff81326dc8>] do_group_exit+0x108/0x330 [ 1116.897025] [<ffffffff81348cf7>] get_signal+0x617/0x17a0 kernel/signal.c:2307 [ 1116.897025] [<ffffffff811b49af>] do_signal+0x7f/0x18f0 [ 1116.897025] [<ffffffff810039bf>] exit_to_usermode_loop+0xbf/0x150 arch/x86/entry/common.c:156 [ 1116.897025] [< inline >] prepare_exit_to_usermode arch/x86/entry/common.c:190 [ 1116.897025] [<ffffffff81006060>] syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259 [ 1116.897025] [<ffffffff85e4d726>] entry_SYSCALL_64_fastpath+0xc4/0xc6 Memory state around the buggy address: ffff8800081b0d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8800081b0e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8800081b0e80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8800081b0f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8800081b0f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== The same issue exists with l2tp_ip_bind() and l2tp_ip_bind_table. Fixes: c51ce497 ("l2tp: fix oops in L2TP IP sockets for connect() AF_UNSPEC case") Reported-by:
Baozeng Ding <sploving1@gmail.com> Reported-by:
Andrey Konovalov <andreyknvl@google.com> Tested-by:
Baozeng Ding <sploving1@gmail.com> Signed-off-by:
Guillaume Nault <g.nault@alphalink.fr> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "Again a set of smaller fixes across several platforms (OMAP, Marvell, Allwinner, i.MX, etc). A handful of typo fixes and smaller missing contents from device trees, with some tweaks to OMAP mach files to deal with CPU feature print misformatting, potential NULL ptr dereference and one setup issue with UARTs" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ipmi/bt-bmc: change compatible node to 'aspeed, ast2400-ibt-bmc' ARM: dts: STiH410-b2260: Fix typo in spi0 chipselect definition ARM: dts: omap5: board-common: fix wrong SMPS6 (VDD-DDR3) voltage ARM: omap3: Add missing memory node in SOM-LV arm64: dts: marvell: add unique identifiers for Armada A8k SPI controllers arm64: dts: marvell: fix clocksource for CP110 slave SPI0 arm64: dts: marvell: Fix typo in label name on Armada 37xx ASoC: omap-abe-twl6040: fix typo in bindings documentation dts: omap5: board-common: enable twl6040 headset jack detection dts: omap5: board-common: add phandle to reference Palmas gpadc ARM: OMAP2+: avoid NULL pointer dereference ARM: OMAP2+: PRM: initialize en_uart4_mask and grpsel_uart4_mask ARM: dts: omap3: Fix memory node in Torpedo board ARM: AM43XX: Select OMAP_INTERCONNECT in Kconfig ARM: OMAP3: Fix formatting of features printed ARM: dts: imx53-qsb: Fix regulator constraints ARM: dts: sun8i: fix the pinmux for UART1
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext4 fixes from Ted Ts'o: "A security fix (so a maliciously corrupted file system image won't panic the kernel) and some fixes for CONFIG_VMAP_STACK" * tag 'ext4_for_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext4: sanity check the block and cluster size at mount time fscrypto: don't use on-stack buffer for key derivation fscrypto: don't use on-stack buffer for filename encryption
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Theodore Ts'o authored
If the block size or cluster size is insane, reject the mount. This is important for security reasons (although we shouldn't be just depending on this check). Ref: http://www.securityfocus.com/archive/1/539661 Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1332506Reported-by:
Borislav Petkov <bp@alien8.de> Reported-by:
Nikolay Borisov <kernel@kyup.com> Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Cc: stable@vger.kernel.org
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Eric Biggers authored
With the new (in 4.9) option to use a virtually-mapped stack (CONFIG_VMAP_STACK), stack buffers cannot be used as input/output for the scatterlist crypto API because they may not be directly mappable to struct page. get_crypt_info() was using a stack buffer to hold the output from the encryption operation used to derive the per-file key. Fix it by using a heap buffer. This bug could most easily be observed in a CONFIG_DEBUG_SG kernel because this allowed the BUG in sg_set_buf() to be triggered. Cc: stable@vger.kernel.org Signed-off-by:
Eric Biggers <ebiggers@google.com> Signed-off-by:
Theodore Ts'o <tytso@mit.edu>
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Eric Biggers authored
With the new (in 4.9) option to use a virtually-mapped stack (CONFIG_VMAP_STACK), stack buffers cannot be used as input/output for the scatterlist crypto API because they may not be directly mappable to struct page. For short filenames, fname_encrypt() was encrypting a stack buffer holding the padded filename. Fix it by encrypting the filename in-place in the output buffer, thereby making the temporary buffer unnecessary. This bug could most easily be observed in a CONFIG_DEBUG_SG kernel because this allowed the BUG in sg_set_buf() to be triggered. Cc: stable@vger.kernel.org Signed-off-by:
Eric Biggers <ebiggers@google.com> Signed-off-by:
Theodore Ts'o <tytso@mit.edu>
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- 19 Nov, 2016 16 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Some I2C driver bugfixes (and one documentation fix)" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: i2c-mux-pca954x: fix deselect enabling for device-tree i2c: digicolor: use clk_disable_unprepare instead of clk_unprepare i2c: mux: fix up dependencies i2c: Documentation: i2c-topology: fix minor whitespace nit i2c: mux: demux-pinctrl: make drivers with no pinctrl work again
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fixes from Radim Krčmář: "ARM: - Fix handling of the 32bit cycle counter - Fix cycle counter filtering x86: - Fix a race leading to double unregistering of user notifiers - Amend oversight in kvm_arch_set_irq that turned Hyper-V code dead - Use SRCU around kvm_lapic_set_vapic_addr - Avoid recursive flushing of asynchronous page faults - Do not rely on deferred update in KVM_GET_CLOCK, which fixes #GP - Let userspace know that KVM_GET_CLOCK is useful with master clock; 4.9 changed the return value to better match the guest clock, but didn't provide means to let guests take advantage of it" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: kvm: x86: merge kvm_arch_set_irq and kvm_arch_set_irq_inatomic KVM: x86: fix missed SRCU usage in kvm_lapic_set_vapic_addr KVM: async_pf: avoid recursive flushing of work items kvm: kvmclock: let KVM_GET_CLOCK return whether the master clock is in use KVM: Disable irq while unregistering user notifier KVM: x86: do not go through vcpu in __get_kvmclock_ns KVM: arm64: Fix the issues when guest PMCCFILTR is configured arm64: KVM: pmu: Fix AArch32 cycle counter access
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Alex Hemme authored
Deselect functionality can be ignored for device-trees with "i2c-mux-idle-disconnect" entries if no platform_data is available. By enabling the deselect functionality outside the platform_data block the logic works as it did in previous kernels. Fixes: 7fcac980 ("i2c: i2c-mux-pca954x: convert to use an explicit i2c mux core") Cc: <stable@vger.kernel.org> # v4.7+ Signed-off-by:
Alex Hemme <ahemme@cisco.com> Signed-off-by:
Ziyang Wu <ziywu@cisco.com> [touched up a few minor issues /peda] Signed-off-by:
Peter Rosin <peda@axentia.se> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: "Fixes marked for stable: - fix system reset interrupt winkle wakeups - fix setting of AIL in hypervisor mode Fixes for code merged this cycle: - fix exception vector build with 2.23 era binutils - fix missing update of HID register on secondary CPUs Other: - fix missing pr_cont()s - invalidate ERAT on tlbiel for POWER9 DD1" * tag 'powerpc-4.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/mm: Fix missing update of HID register on secondary CPUs powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1 powerpc/64: Fix setting of AIL in hypervisor mode powerpc/oops: Fix missing pr_cont()s in instruction dump powerpc/oops: Fix missing pr_cont()s in show_regs() powerpc/oops: Fix missing pr_cont()s in print_msr_bits() et. al. powerpc/oops: Fix missing pr_cont()s in show_stack() powerpc: Fix exception vector build with 2.23 era binutils powerpc/64s: Fix system reset interrupt winkle wakeups
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
Pull crypto fixes from Herbert Xu: "This fixes the following issues: - Compiler warning in caam driver that was the last one remaining - Do not register aes-xts in caam drivers on unsupported platforms - Regression in algif_hash interface that may lead to an oops" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: algif_hash - Fix NULL hash crash with shash crypto: caam - fix type mismatch warning crypto: caam - do not register AES-XTS mode on LP units
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git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-ledsLinus Torvalds authored
Pull LED subsystem update from Jacek Anaszewski: "I'd like to announce a new co-maintainer - Pavel Machek" * tag 'leds_4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds: MAINTAINERS: Add LED subsystem co-maintainer
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git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds authored
Pull dmaengine fixes from Vinod Koul: "Some driver fixes which we pending in my tree: - return error code fix in edma driver - Kconfig fix for genric allocator in mmp_tdma - fix uninitialized value in sun6i - Runtime pm fixes for cppi" * tag 'dmaengine-fix-4.9-rc6' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: cppi41: More PM runtime fixes dmaengine: cpp41: Fix handling of error path dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected dmaengine: cppi41: Fix list not empty warning on module removal dmaengine: sun6i: fix the uninitialized value for v_lli dmaengine: mmp_tdma: add missing select GENERIC_ALLOCATOR in Kconfig dmaengine: edma: Fix error return code in edma_alloc_chan_resources()
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Paolo Bonzini authored
kvm_arch_set_irq is unused since commit b97e6de9. Merge its functionality with kvm_arch_set_irq_inatomic. Reported-by:
Jiang Biao <jiang.biao2@zte.com.cn> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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Paolo Bonzini authored
Reported by syzkaller: [ INFO: suspicious RCU usage. ] 4.9.0-rc4+ #47 Not tainted ------------------------------- ./include/linux/kvm_host.h:536 suspicious rcu_dereference_check() usage! stack backtrace: CPU: 1 PID: 6679 Comm: syz-executor Not tainted 4.9.0-rc4+ #47 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 ffff880039e2f6d0 ffffffff81c2e46b ffff88003e3a5b40 0000000000000000 0000000000000001 ffffffff83215600 ffff880039e2f700 ffffffff81334ea9 ffffc9000730b000 0000000000000004 ffff88003c4f8420 ffff88003d3f8000 Call Trace: [< inline >] __dump_stack lib/dump_stack.c:15 [<ffffffff81c2e46b>] dump_stack+0xb3/0x118 lib/dump_stack.c:51 [<ffffffff81334ea9>] lockdep_rcu_suspicious+0x139/0x180 kernel/locking/lockdep.c:4445 [< inline >] __kvm_memslots include/linux/kvm_host.h:534 [< inline >] kvm_memslots include/linux/kvm_host.h:541 [<ffffffff8105d6ae>] kvm_gfn_to_hva_cache_init+0xa1e/0xce0 virt/kvm/kvm_main.c:1941 [<ffffffff8112685d>] kvm_lapic_set_vapic_addr+0xed/0x140 arch/x86/kvm/lapic.c:2217 Reported-by:
Dmitry Vyukov <dvyukov@google.com> Fixes: fda4e2e8 Cc: Andrew Honig <ahonig@google.com> Cc: stable@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Reviewed-by:
David Hildenbrand <david@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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Paolo Bonzini authored
This was reported by syzkaller: [ INFO: possible recursive locking detected ] 4.9.0-rc4+ #49 Not tainted --------------------------------------------- kworker/2:1/5658 is trying to acquire lock: ([ 1644.769018] (&work->work) [< inline >] list_empty include/linux/compiler.h:243 [<ffffffff8128dd60>] flush_work+0x0/0x660 kernel/workqueue.c:1511 but task is already holding lock: ([ 1644.769018] (&work->work) [<ffffffff812916ab>] process_one_work+0x94b/0x1900 kernel/workqueue.c:2093 stack backtrace: CPU: 2 PID: 5658 Comm: kworker/2:1 Not tainted 4.9.0-rc4+ #49 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: events async_pf_execute ffff8800676ff630 ffffffff81c2e46b ffffffff8485b930 ffff88006b1fc480 0000000000000000 ffffffff8485b930 ffff8800676ff7e0 ffffffff81339b27 ffff8800676ff7e8 0000000000000046 ffff88006b1fcce8 ffff88006b1fccf0 Call Trace: ... [<ffffffff8128ddf3>] flush_work+0x93/0x660 kernel/workqueue.c:2846 [<ffffffff812954ea>] __cancel_work_timer+0x17a/0x410 kernel/workqueue.c:2916 [<ffffffff81295797>] cancel_work_sync+0x17/0x20 kernel/workqueue.c:2951 [<ffffffff81073037>] kvm_clear_async_pf_completion_queue+0xd7/0x400 virt/kvm/async_pf.c:126 [< inline >] kvm_free_vcpus arch/x86/kvm/x86.c:7841 [<ffffffff810b728d>] kvm_arch_destroy_vm+0x23d/0x620 arch/x86/kvm/x86.c:7946 [< inline >] kvm_destroy_vm virt/kvm/kvm_main.c:731 [<ffffffff8105914e>] kvm_put_kvm+0x40e/0x790 virt/kvm/kvm_main.c:752 [<ffffffff81072b3d>] async_pf_execute+0x23d/0x4f0 virt/kvm/async_pf.c:111 [<ffffffff8129175c>] process_one_work+0x9fc/0x1900 kernel/workqueue.c:2096 [<ffffffff8129274f>] worker_thread+0xef/0x1480 kernel/workqueue.c:2230 [<ffffffff812a5a94>] kthread+0x244/0x2d0 kernel/kthread.c:209 [<ffffffff831f102a>] ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:433 The reason is that kvm_put_kvm is causing the destruction of the VM, but the page fault is still on the ->queue list. The ->queue list is owned by the VCPU, not by the work items, so we cannot just add list_del to the work item. Instead, use work->vcpu to note async page faults that have been resolved and will be processed through the done list. There is no need to flush those. Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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Paolo Bonzini authored
Userspace can read the exact value of kvmclock by reading the TSC and fetching the timekeeping parameters out of guest memory. This however is brittle and not necessary anymore with KVM 4.11. Provide a mechanism that lets userspace know if the new KVM_GET_CLOCK semantics are in effect, and---since we are at it---if the clock is stable across all VCPUs. Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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Ignacio Alvarado authored
Function user_notifier_unregister should be called only once for each registered user notifier. Function kvm_arch_hardware_disable can be executed from an IPI context which could cause a race condition with a VCPU returning to user mode and attempting to unregister the notifier. Signed-off-by:
Ignacio Alvarado <ikalvarado@google.com> Cc: stable@vger.kernel.org Fixes: 18863bdd ("KVM: x86 shared msr infrastructure") Reviewed-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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Paolo Bonzini authored
Going through the first VCPU is wrong if you follow a KVM_SET_CLOCK with a KVM_GET_CLOCK immediately after, without letting the VCPU run and call kvm_guest_time_update. To fix this, compute the kvmclock value ourselves, using the master clock (tsc, nsec) pair as the base and the host CPU frequency as the scale. Reported-by:
Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarmRadim Krčmář authored
KVM/ARM updates for v4.9-rc6 - Fix handling of the 32bit cycle counter - Fix cycle counter filtering
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git://git.open-mesh.org/linux-mergeDavid S. Miller authored
Simon Wunderlich says: ==================== Here are two batman-adv bugfix patches: - Revert a splat on disabling interface which created another problem, by Sven Eckelmann - Fix error handling when the primary interface disappears during a throughput meter test, by Sven Eckelmann ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Geliang Tang authored
Drop duplicate header scatterlist.h from iommu_common.h. Signed-off-by:
Geliang Tang <geliangtang@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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