- 05 Nov, 2014 40 commits
-
-
Eric Dumazet authored
commit fe0ca732 upstream. We need to cancel the work queue after rcu grace period, otherwise it can be rescheduled by incoming packets. We need to purge queue if some skbs are still in it. We can use __skb_queue_head_init() variant in macvlan_process_broadcast() Signed-off-by:
Eric Dumazet <edumazet@google.com> Fixes: 412ca155 ("macvlan: Move broadcasts into a work queue") Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Luis Henriques <luis.henriques@canonical.com>
-
Eric Dumazet authored
commit 349ce993 upstream. percpu tcp_md5sig_pool contains memory blobs that ultimately go through sg_set_buf(). -> sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); This requires that whole area is in a physically contiguous portion of memory. And that @buf is not backed by vmalloc(). Given that alloc_percpu() can use vmalloc() areas, this does not fit the requirements. Replace alloc_percpu() by a static DEFINE_PER_CPU() as tcp_md5sig_pool is small anyway, there is no gain to dynamically allocate it. Signed-off-by:
Crestez Dan Leonard <cdleonard@gmail.com> Signed-off-by:
-
Haiyang Zhang authored
commit 942396b0 upstream. total_data_buflen is used by netvsc_send() to decide if a packet can be put into send buffer. It should also include the size of RNDIS message before the Ethernet frame. Otherwise, a messge with total size bigger than send_section_size may be copied into the send buffer, and cause data corruption. [Request to include this patch to the Stable branches] Signed-off-by:
Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
-
Karl Beldan authored
commit a63ba13e upstream. The crafted header start address is from a driver supplied buffer, which one can reasonably expect to be aligned on a 4-bytes boundary. However ATM the TSO helper API is only used by ethernet drivers and the tcp header will then be aligned to a 2-bytes only boundary from the header start address. Signed-off-by:
Karl Beldan <karl.beldan@rivierawaves.com> Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by:
-
Ian Morgan authored
commit 95ff8868 upstream. The following patch fixes a bug which causes the ax88179_178a driver to be incapable of being added to a bond. When I brought up the issue with the bonding maintainers, they indicated that the real problem was with the NIC driver which must return zero for success (of setting the MAC address). I see that several other NIC drivers follow that pattern by either simply always returing zero, or by passing through a negative (error) result while rewriting any positive return code to zero. With that same philisophy applied to the ax88179_178a driver, it allows it to work correctly with the bonding driver. I believe this is suitable for queuing in -stable, as it's a small, simple, and obvious fix that corrects a defect with no other known workaround. This patch is against vanilla 3.17(.0). Signed-off-by:
Ian Morgan <imorgan@primordial.ca> drivers/net/usb/ax88179_178a.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) Signed-off-by:
-
Li RongQing authored
commit 1245dfc8 upstream. pskb_may_pull() maybe change skb->data and make eth pointer oboslete, so set eth after pskb_may_pull() Fixes:3d7b46cd("ip_tunnel: push generic protocol handling to ip_tunnel module") Cc: Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
Li RongQing <roy.qing.li@gmail.com> Acked-by:
Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
-
Vasily Averin authored
commit 4062090e upstream. ip_setup_cork() called inside ip_append_data() steals dst entry from rt to cork and in case errors in __ip_append_data() nobody frees stolen dst entry Fixes: 2e77d89b ("net: avoid a pair of dst_hold()/dst_release() in ip_append_data()") Signed-off-by:
Vasily Averin <vvs@parallels.com> Acked-by:
-
Li RongQing authored
commit 7a9f526f upstream. pskb_may_pull maybe change skb->data and make eth pointer oboslete, so eth needs to reload Fixes: 91269e39 ("vxlan: using pskb_may_pull as early as possible") Cc: Eric Dumazet <edumazet@google.com> Signed-off-by:
-
Li RongQing authored
commit 91269e39 upstream. pskb_may_pull should be used to check if skb->data has enough space, skb->len can not ensure that. Cc: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
-
Li RongQing authored
commit ce6502a8 upstream. when netif_rx() is done, the netif_rx handled skb maybe be freed, and should not be used. Signed-off-by:
-
Jiri Pirko authored
commit f76936d0 upstream. fib_nh_match does not match nexthops correctly. Example: ip route add 172.16.10/24 nexthop via 192.168.122.12 dev eth0 \ nexthop via 192.168.122.13 dev eth0 ip route del 172.16.10/24 nexthop via 192.168.122.14 dev eth0 \ nexthop via 192.168.122.15 dev eth0 Del command is successful and route is removed. After this patch applied, the route is correctly matched and result is: RTNETLINK answers: No such process Please consider this for stable trees as well. Fixes: 4e902c57 ("[IPv4]: FIB configuration using struct fib_config") Signed-off-by:
Jiri Pirko <jiri@resnulli.us> Acked-by:
-
Alexei Starovoitov authored
commit e0ee9c12 upstream. 1. JIT compiler using multi-pass approach to converge to final image size, since x86 instructions are variable length. It starts with large gaps between instructions (so some jumps may use imm32 instead of imm8) and iterates until total program size is the same as in previous pass. This algorithm works only if program size is strictly decreasing. Programs that use LD_ABS insn need additional code in prologue, but it was not emitted during 1st pass, so there was a chance that 2nd pass would adjust imm32->imm8 jump offsets to the same number of bytes as increase in prologue, which may cause algorithm to erroneously decide that size converged. Fix it by always emitting largest prologue in the first pass which is detected by oldproglen==0 check. Also change error check condition 'proglen != oldproglen' to fail gracefully. 2. while staring at the code realized that 64-byte buffer may not be enough when 1st insn is large, so increase it to 128 to avoid buffer overflow (theoretical maximum size of prologue+div is 109) and add runtime check. Fixes: 62258278 ("net: filter: x86: internal BPF JIT") Reported-by:
Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by:
Alexei Starovoitov <ast@plumgrid.com> Tested-by:
-
Valdis Kletnieks authored
commit d4bf205d upstream. The pstore filesystem still creates duplicate filename/inode pairs for some pstore types. Add the id to the filename to prevent that. Before patch: [/sys/fs/pstore] ls -li total 0 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi 1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi After: [/sys/fs/pstore] ls -li total 0 1232 -r--r--r--. 1 root root 148 Sep 29 17:09 console-efi-141202499100000 1231 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi-141202499200000 1230 -r--r--r--. 1 root root 148 Sep 29 17:44 console-efi-141202705400000 1229 -r--r--r--. 1 root root 67 Sep 29 17:44 console-efi-141202705500000 1228 -r--r--r--. 1 root root 67 Sep 29 20:42 console-efi-141203772600000 1227 -r--r--r--. 1 root root 148 Sep 29 23:42 console-efi-141204854900000 1226 -r--r--r--. 1 root root 67 Sep 29 23:42 console-efi-141204855000000 1225 -r--r--r--. 1 root root 148 Sep 29 23:59 console-efi-141204954200000 1224 -r--r--r--. 1 root root 67 Sep 29 23:59 console-efi-141204954400000 Signed-off-by:
Valdis Kletnieks <valdis.kletnieks@vt.edu> Acked-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Tony Luck <tony.luck@intel.com> Signed-off-by:
-
Amos Kong authored
commit f4981956 upstream. Before we really unregister the hwrng device, reading will get stuck if the virtio device is reset. We should return error for reading when we start to remove the device. Signed-off-by:
Amos Kong <akong@redhat.com> Reviewed-by:
Amit Shah <amit.shah@redhat.com> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
-
Amos Kong authored
commit 3856e548 upstream. When we try to hot-remove a busy virtio-rng device from QEMU monitor, the device can't be hot-removed. Because virtio-rng driver hangs at wait_for_completion_killable(). This patch exits the waiting by completing have_data completion before unregistering, resets data_avail to avoid the hwrng core use wrong buffer bytes. Signed-off-by:
-
David Dueck authored
commit e77980e5 upstream. In order to make the driver work with the common clock framework, this patch converts the clk_enable()/clk_disable() to clk_prepare_enable()/clk_disable_unprepare(). While there, add the missing error handling. Signed-off-by:
David Dueck <davidcdueck@googlemail.com> Signed-off-by:
Anthony Harivel <anthony.harivel@emtrion.de> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by:
-
Marc Kleine-Budde authored
commit de594488 upstream. After sending a RTR frame the TX mailbox becomes a RX_EMPTY mailbox. To avoid side effects when the RX-FIFO is full, this patch puts the TX mailbox into TX_INACTIVE mode in the transmission complete interrupt handler. This, of course, leaves a race window between the actual completion of the transmission and the handling of tx-complete interrupt. However this is the best we can do without busy polling the tx complete interrupt. Signed-off-by:
-
David Jander authored
commit 25e92445 upstream. This patch implements the workaround mentioned in ERR005829: ERR005829: FlexCAN: FlexCAN does not transmit a message that is enabled to be transmitted in a specific moment during the arbitration process. Workaround: The workaround consists of two extra steps after setting up a message for transmission: Step 8: Reserve the first valid mailbox as an inactive mailbox (CODE=0b1000). If RX FIFO is disabled, this mailbox must be message buffer 0. Otherwise, the first valid mailbox can be found using the "RX FIFO filters" table in the FlexCAN chapter of the chip reference manual. Step 9: Write twice INACTIVE code (0b1000) into the first valid mailbox. Signed-off-by:
David Jander <david@protonic.nl> Signed-off-by:
-
David Jander authored
commit fc05b884 upstream. Apparently mailboxes may contain random data at startup, causing some of them being prepared for message reception. This causes overruns being missed or even confusing the IRQ check for trasmitted messages, increasing the transmit counter instead of the error counter. This patch initializes all mailboxes after the FIFO as RX_INACTIVE. Signed-off-by:
-
Marc Kleine-Budde authored
commit c32fe4ad upstream. This patch fixes the initialization of the TX mailbox. It is now correctly initialized as TX_INACTIVE not RX_EMPTY. Signed-off-by:
-
Al Viro authored
commit 4023bfc9 upstream. in the former we simply check if dentry is still valid after picking its ->d_inode; in the latter we fetch ->d_inode in the same places where we fetch dentry and its ->d_seq, under the same checks. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
-
Josh Triplett authored
commit 361e9dfb upstream. The buffers sized by CONFIG_LOG_BUF_SHIFT and CONFIG_LOG_CPU_MAX_BUF_SHIFT do not exist if CONFIG_PRINTK=n, so don't ask about their size at all. Signed-off-by:
Josh Triplett <josh@joshtriplett.org> Acked-by:
Randy Dunlap <rdunlap@infradead.org> [ kamal: backport to 3.13-stable: only LOG_BUF_SHIFT ] Signed-off-by:
Kamal Mostafa <kamal@canonical.com> Signed-off-by:
-
Nadav Amit authored
commit 7e46dddd upstream. Commit d1442d85 ("KVM: x86: Handle errors when RIP is set during far jumps") introduced a bug that caused the fix to be incomplete. Due to incorrect evaluation, far jump to segment with L bit cleared (i.e., 32-bit segment) and RIP with any of the high bits set (i.e, RIP[63:32] != 0) set may not trigger #GP. As we know, this imposes a security problem. In addition, the condition for two warnings was incorrect. Fixes: d1442d85Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Nadav Amit <namit@cs.technion.ac.il> [Add #ifdef CONFIG_X86_64 to avoid complaints of undefined behavior. - Paolo] Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
-
Quentin Casasnovas authored
commit 3d32e4db upstream. The third parameter of kvm_unpin_pages() when called from kvm_iommu_map_pages() is wrong, it should be the number of pages to un-pin and not the page size. This error was facilitated with an inconsistent API: kvm_pin_pages() takes a size, but kvn_unpin_pages() takes a number of pages, so fix the problem by matching the two. This was introduced by commit 350b8bdd ("kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601)"), which fixes the lack of un-pinning for pages intended to be un-pinned (i.e. memory leak) but unfortunately potentially aggravated the number of pages we un-pin that should have stayed pinned. As far as I understand though, the same practical mitigations apply. This issue was found during review of Red Hat 6.6 patches to prepare Ksplice rebootless updates. Thanks to Vegard for his time on a late Friday evening to help me in understanding this code. Fixes: 350b8bdd ("kvm: iommu: fix the third parameter of... (CVE-2014-3601)") Signed-off-by:
Quentin Casasnovas <quentin.casasnovas@oracle.com> Signed-off-by:
Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by:
Jamie Iles <jamie.iles@oracle.com> Reviewed-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
-
Michael S. Tsirkin authored
commit 2bc19dc3 upstream. KVM_EXIT_UNKNOWN is a kvm bug, we don't really know whether it was triggered by a priveledged application. Let's not kill the guest: WARN and inject #UD instead. Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
-
Petr Matousek authored
commit a642fc30 upstream. On systems with invvpid instruction support (corresponding bit in IA32_VMX_EPT_VPID_CAP MSR is set) guest invocation of invvpid causes vm exit, which is currently not handled and results in propagation of unknown exit to userspace. Fix this by installing an invvpid vm exit handler. This is CVE-2014-3646. Signed-off-by:
Petr Matousek <pmatouse@redhat.com> Signed-off-by:
-
Nadav Amit authored
commit d1442d85 upstream. Far jmp/call/ret may fault while loading a new RIP. Currently KVM does not handle this case, and may result in failed vm-entry once the assignment is done. The tricky part of doing so is that loading the new CS affects the VMCS/VMCB state, so if we fail during loading the new RIP, we are left in unconsistent state. Therefore, this patch saves on 64-bit the old CS descriptor and restores it if loading RIP failed. This fixes CVE-2014-3647. Signed-off-by:
-
Nadav Amit authored
commit 234f3ce4 upstream. Before changing rip (during jmp, call, ret, etc.) the target should be asserted to be canonical one, as real CPUs do. During sysret, both target rsp and rip should be canonical. If any of these values is noncanonical, a #GP exception should occur. The exception to this rule are syscall and sysenter instructions in which the assigned rip is checked during the assignment to the relevant MSRs. This patch fixes the emulator to behave as real CPUs do for near branches. Far branches are handled by the next patch. This fixes CVE-2014-3647. Signed-off-by:
-
Nadav Amit authored
commit 05c83ec9 upstream. Relative jumps and calls do the masking according to the operand size, and not according to the address size as the KVM emulator does today. This patch fixes KVM behavior. Signed-off-by:
-
Andy Honig authored
commit 2febc839 upstream. There's a race condition in the PIT emulation code in KVM. In __kvm_migrate_pit_timer the pit_timer object is accessed without synchronization. If the race condition occurs at the wrong time this can crash the host kernel. This fixes CVE-2014-3611. Signed-off-by:
Andrew Honig <ahonig@google.com> Signed-off-by:
-
Andy Honig authored
commit 8b3c3104 upstream. The previous patch blocked invalid writes directly when the MSR is written. As a precaution, prevent future similar mistakes by gracefulling handle GPs caused by writes to shared MSRs. Signed-off-by:
-
Nadav Amit authored
commit 854e8bb1 upstream. Upon WRMSR, the CPU should inject #GP if a non-canonical value (address) is written to certain MSRs. The behavior is "almost" identical for AMD and Intel (ignoring MSRs that are not implemented in either architecture since they would anyhow #GP). However, IA32_SYSENTER_ESP and IA32_SYSENTER_EIP cause #GP if non-canonical address is written on Intel but not on AMD (which ignores the top 32-bits). Accordingly, this patch injects a #GP on the MSRs which behave identically on Intel and AMD. To eliminate the differences between the architecutres, the value which is written to IA32_SYSENTER_ESP and IA32_SYSENTER_EIP is turned to canonical value before writing instead of injecting a #GP. Some references from Intel and AMD manuals: According to Intel SDM description of WRMSR instruction #GP is expected on WRMSR "If the source register contains a non-canonical address and ECX specifies one of the following MSRs: IA32_DS_AREA, IA32_FS_BASE, IA32_GS_BASE, IA32_KERNEL_GS_BASE, IA32_LSTAR, IA32_SYSENTER_EIP, IA32_SYSENTER_ESP." According to AMD manual instruction manual: LSTAR/CSTAR (SYSCALL): "The WRMSR instruction loads the target RIP into the LSTAR and CSTAR registers. If an RIP written by WRMSR is not in canonical form, a general-protection exception (#GP) occurs." IA32_GS_BASE and IA32_FS_BASE (WRFSBASE/WRGSBASE): "The address written to the base field must be in canonical form or a #GP fault will occur." IA32_KERNEL_GS_BASE (SWAPGS): "The address stored in the KernelGSbase MSR must be in canonical form." This patch fixes CVE-2014-3610. Signed-off-by:
-
Markos Chandras authored
commit aedd153f upstream. Code before the .fixup section needs to have the .insn directive. This has no side effects on MIPS32/64 but it affects the way microMIPS loads the address for the return label. Fixes the following build problem: mips-linux-gnu-ld: arch/mips/built-in.o: .fixup+0x4a0: Unsupported jump between ISA modes; consider recompiling with interlinking enabled. mips-linux-gnu-ld: final link failed: Bad value Makefile:819: recipe for target 'vmlinux' failed The fix is similar to 1658f914 ("MIPS: microMIPS: Disable LL/SC and fix linker bug.") Signed-off-by:
Markos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8117/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
-
Dirk Brandewie authored
commit d022a65e upstream. Using a VID value that is not high enough for the requested P state can cause machine checks. Add a ceiling function to ensure calulated VIDs with fractional values are set to the next highest integer VID value. The algorythm for calculating the non-trubo VID from the BIOS writers guide is: vid_ratio = (vid_max - vid_min) / (max_pstate - min_pstate) vid = ceiling(vid_min + (req_pstate - min_pstate) * vid_ratio) Signed-off-by:
Dirk Brandewie <dirk.j.brandewie@intel.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
-
Dirk Brandewie authored
commit b27580b0 upstream. BYT has a different conversion from P state to frequency than the core processors. This causes the min/max and current frequency to be misreported on some BYT SKUs. Tested on BYT N2820, Ivybridge and Haswell processors. Link: https://bugzilla.yoctoproject.org/show_bug.cgi?id=6663Signed-off-by:
-
Dirk Brandewie authored
commit c0348717 upstream. The user may have custom settings don't destroy them during suspend. Link: https://bugzilla.kernel.org/show_bug.cgi?id=80651Reported-by:
Tobias Jakobi <liquid.acid@gmx.net> Signed-off-by:
-
Gabriele Mazzotta authored
commit 4521e1a0 upstream. Some BIOSes modify the state of MSR_IA32_MISC_ENABLE_TURBO_DISABLE based on the current power source for the system battery AC vs battery. Reflect the correct current state and ability to modify the no_turbo sysfs file based on current state of MSR_IA32_MISC_ENABLE_TURBO_DISABLE. Link: https://bugzilla.kernel.org/show_bug.cgi?id=83151Signed-off-by:
Gabriele Mazzotta <gabriele.mzt@gmail.com> Signed-off-by:
-
Dirk Brandewie authored
commit c034b02e upstream. Currently the core does not expose scaling_cur_freq for set_policy() drivers this breaks some userspace monitoring tools. Change the core to expose this file for all drivers and if the set_policy() driver supports the get() callback use it to retrieve the current frequency. Link: https://bugzilla.kernel.org/show_bug.cgi?id=73741Signed-off-by:
-
Pali Rohár authored
commit 36b4bed5 upstream. Code which changes policy to powersave changes also max_policy_pct based on max_freq. Code which change max_perf_pct has upper limit base on value max_policy_pct. When policy is changing from powersave back to performance then max_policy_pct is not changed. Which means that changing max_perf_pct is not possible to high values if max_freq was too low in powersave policy. Test case: $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq 800000 $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 3300000 $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance $ cat /sys/devices/system/cpu/intel_pstate/max_perf_pct 100 $ echo powersave > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ echo 800000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq $ echo 20 > /sys/devices/system/cpu/intel_pstate/max_perf_pct $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor powersave $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 800000 $ cat /sys/devices/system/cpu/intel_pstate/max_perf_pct 20 $ echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor $ echo 3300000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq $ echo 100 > /sys/devices/system/cpu/intel_pstate/max_perf_pct $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor performance $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 3300000 $ cat /sys/devices/system/cpu/intel_pstate/max_perf_pct 24 And now intel_pstate driver allows to set maximal value for max_perf_pct based on max_policy_pct which is 24 for previous powersave max_freq 800000. This patch will set default value for max_policy_pct when setting policy to performance so it will allow to set also max value for max_perf_pct. Signed-off-by:
Pali Rohár <pali.rohar@gmail.com> Acked-by:
-
Olaf Hering authored
commit c0c3e735 upstream. qemu as used by xend/xm toolstack uses a different subvendor id. Bind the drm driver also to this emulated card. Signed-off-by:
Olaf Hering <olaf@aepfle.de> Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
-
