- 29 Jan, 2016 38 commits
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Sasha Levin authored
[ Upstream commit 320f1a4a ] proc_dostring() needs an initialized destination string, while the one provided in proc_sctp_do_hmac_alg() contains stack garbage. Thus, writing to cookie_hmac_alg would strlen() that garbage and end up accessing invalid memory. Fixes: 3c68198e ("sctp: Make hmac algorithm selection for cookie generation dynamic") Signed-off-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Francesco Ruggeri authored
[ Upstream commit 07a5d384 ] dst_release should not access dst->flags after decrementing __refcnt to 0. The dst_entry may be in dst_busy_list and dst_gc_task may dst_destroy it before dst_release gets a chance to access dst->flags. Fixes: d69bbf88 ("net: fix a race in dst_release()") Fixes: 27b75c95 ("net: avoid RCU for NOCACHE dst") Signed-off-by:
Francesco Ruggeri <fruggeri@arista.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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Hannes Frederic Sowa authored
[ Upstream commit ff621985 ] [I stole this patch from Eric Biederman. He wrote:] > There is no defined mechanism to pass network namespace information > into /sbin/bridge-stp therefore don't even try to invoke it except > for bridge devices in the initial network namespace. > > It is possible for unprivileged users to cause /sbin/bridge-stp to be > invoked for any network device name which if /sbin/bridge-stp does not > guard against unreasonable arguments or being invoked twice on the > same network device could cause problems. [Hannes: changed patch using netns_eq] Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
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willy tarreau authored
[ Upstream commit 712f4aad ] It is possible for a process to allocate and accumulate far more FDs than the process' limit by sending them over a unix socket then closing them to keep the process' fd count low. This change addresses this problem by keeping track of the number of FDs in flight per user and preventing non-privileged processes from having more FDs in flight than their configured FD limit. Reported-by: socketpair@gmail.com Reported-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Mitigates: CVE-2013-4312 (Linux 2.0+) Suggested-by:
Linus Torvalds <torvalds@linux-foundation.org> Acked-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
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Florian Westphal authored
[ Upstream commit 55285bf0 ] Dmitry reports memleak with syskaller program. Problem is that connector bumps skb usecount but might not invoke callback. So move skb_get to where we invoke the callback. Reported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Xin Long authored
[ Upstream commit 068d8bd3 ] In sctp_close, sctp_make_abort_user may return NULL because of memory allocation failure. If this happens, it will bypass any state change and never free the assoc. The assoc has no chance to be freed and it will be kept in memory with the state it had even after the socket is closed by sctp_close(). So if sctp_make_abort_user fails to allocate memory, we should abort the asoc via sctp_primitive_ABORT as well. Just like the annotation in sctp_sf_cookie_wait_prm_abort and sctp_sf_do_9_1_prm_abort said, "Even if we can't send the ABORT due to low memory delete the TCB. This is a departure from our typical NOMEM handling". But then the chunk is NULL (low memory) and the SCTP_CMD_REPLY cmd would dereference the chunk pointer, and system crash. So we should add SCTP_CMD_REPLY cmd only when the chunk is not NULL, just like other places where it adds SCTP_CMD_REPLY cmd. Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by:
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Andrey Ryabinin authored
[ Upstream commit e459dfee ] ip6addrlbl_get() has never worked. If ip6addrlbl_hold() succeeded, ip6addrlbl_get() will exit with '-ESRCH'. If ip6addrlbl_hold() failed, ip6addrlbl_get() will use about to be free ip6addrlbl_entry pointer. Fix this by inverting ip6addrlbl_hold() check. Fixes: 2a8cc6c8 ("[IPV6] ADDRCONF: Support RFC3484 configurable address selection policy table.") Signed-off-by:
Andrey Ryabinin <aryabinin@virtuozzo.com> Reviewed-by:
Cong Wang <cwang@twopensource.com> Acked-by:
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
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Vijay Pandurangan authored
[ Upstream commit ce8c839b ] Packets that arrive from real hardware devices have ip_summed == CHECKSUM_UNNECESSARY if the hardware verified the checksums, or CHECKSUM_NONE if the packet is bad or it was unable to verify it. The current version of veth will replace CHECKSUM_NONE with CHECKSUM_UNNECESSARY, which causes corrupt packets routed from hardware to a veth device to be delivered to the application. This caused applications at Twitter to receive corrupt data when network hardware was corrupting packets. We believe this was added as an optimization to skip computing and verifying checksums for communication between containers. However, locally generated packets have ip_summed == CHECKSUM_PARTIAL, so the code as written does nothing for them. As far as we can tell, after removing this code, these packets are transmitted from one stack to another unmodified (tcpdump shows invalid checksums on both sides, as expected), and they are delivered correctly to applications. We didn’t test every possible network configuration, but we tried a few common ones such as bridging containers, using NAT between the host and a container, and routing from hardware devices to containers. We have effectively deployed this in production at Twitter (by disabling RX checksum offloading on veth devices). This code dates back to the first version of the driver, commit <e314dbdc> ("[NET]: Virtual ethernet device driver"), so I suspect this bug occurred mostly because the driver API has evolved significantly since then. Commit <0b796750> ("net/veth: Fix packet checksumming") (in December 2010) fixed this for packets that get created locally and sent to hardware devices, by not changing CHECKSUM_PARTIAL. However, the same issue still occurs for packets coming in from hardware devices. Co-authored-by:
Evan Jones <ej@evanjones.ca> Signed-off-by:
Vijay Pandurangan <vijayp@vijayp.ca> Acked-by:
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Oliver Neukum authored
commit 1eaf35e4 upstream. The module should fail to load. Signed-off-by:
Oliver Neukum <oneukum@suse.com> Signed-off-by:
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Oliver Freyermuth authored
commit f7d7f59a upstream. Add the USB device ID for ELV Marble Sound Board 1. Signed-off-by:
Oliver Freyermuth <o.freyermuth@googlemail.com> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Dan Carpenter authored
commit abdc9a3b upstream. The code expects the loop to end with "retries" set to zero but, because it is a post-op, it will end set to -1. I have fixed this by moving the decrement inside the loop. Fixes: 014aa2a3 ('USB: ipaq: minor ipaq_open() cleanup.') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Chunfeng Yun authored
commit 096b110a upstream. if a full speed hub connects to a high speed hub which supports MTT, the MTT field of its slot context will be set to 1 when xHCI driver setups an xHCI virtual device in xhci_setup_addressable_virt_dev(); once usb core fetch its hub descriptor, and need to update the xHC's internal data structures for the device, the HUB field of its slot context will be set to 1 too, meanwhile MTT is also set before, this will cause configure endpoint command fail, so in the case, we should clear MTT to 0 for full speed hub according to section 6.2.2 Signed-off-by:
Chunfeng Yun <chunfeng.yun@mediatek.com> Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
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Vinod Koul authored
commit a1068045 upstream. The detection of direction for compress was only taking into account codec capabilities and not CPU ones. Fix this by checking the CPU side capabilities as well Tested-by:
Ashish Panwar <ashish.panwar@intel.com> Signed-off-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Nikesh Oswal authored
commit e73694d8 upstream. For a sample rate of 12kHz the bclk was taken from the 44.1kHz table as we test for a multiple of 8kHz. This patch fixes this issue by testing for multiples of 4kHz instead. Signed-off-by:
Nikesh Oswal <Nikesh.Oswal@cirrus.com> Signed-off-by:
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by:
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Mans Rullgard authored
commit 1ea5998a upstream. Attempting to use this codec driver triggers a BUG() in regcache_sync() since no cache type is set. The register map of this device is fairly small and has few holes so a flat cache is suitable. Signed-off-by:
Mans Rullgard <mans@mansr.com> Acked-by:
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Sachin Pandhare authored
commit e9f96bc5 upstream. From datasheet: R17408 (4400h) HPF_C_1 R17409 (4401h) HPF_C_0 17048 -> 17408 (0x4400) 17049 -> 17409 (0x4401) Signed-off-by:
Sachin Pandhare <sachinpandhare@gmail.com> Acked-by:
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Takashi Iwai authored
commit c0bcdbdf upstream. When a TLV ioctl with numid zero is handled, the driver may spew a kernel warning with a stack trace at each call. The check was intended obviously only for a kernel driver, but not for a user interaction. Let's fix it. This was spotted by syzkaller fuzzer. Reported-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Takashi Iwai authored
commit 2ba1fe7a upstream. hrtimer_cancel() waits for the completion from the callback, thus it must not be called inside the callback itself. This was already a problem in the past with ALSA hrtimer driver, and the early commit [fcfdebe7: ALSA: hrtimer - Fix lock-up] tried to address it. However, the previous fix is still insufficient: it may still cause a lockup when the ALSA timer instance reprograms itself in its callback. Then it invokes the start function even in snd_timer_interrupt() that is called in hrtimer callback itself, results in a CPU stall. This is no hypothetical problem but actually triggered by syzkaller fuzzer. This patch tries to fix the issue again. Now we call hrtimer_try_to_cancel() at both start and stop functions so that it won't fall into a deadlock, yet giving some chance to cancel the queue if the functions have been called outside the callback. The proper hrtimer_cancel() is called in anyway at closing, so this should be enough. Reported-and-tested-by:
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Nicolas Boichat authored
commit 43c54b8c upstream. This reverts one hunk of commit ef44a1ec ("ALSA: sound/core: use memdup_user()"), which replaced a number of kmalloc followed by memcpy with memdup calls. In this case, we are copying from a struct snd_pcm_hw_params32 to a struct snd_pcm_hw_params, but the latter is 4 bytes longer than the 32-bit version, so we need to separate kmalloc and copy calls. This actually leads to an out-of-bounds memory access later on in sound/soc/soc-pcm.c:soc_pcm_hw_params() (detected using KASan). Fixes: ef44a1ec ('ALSA: sound/core: use memdup_user()') Signed-off-by:
Nicolas Boichat <drinkcat@chromium.org> Signed-off-by:
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Nicolas Boichat authored
commit 9586495d upstream. This reverts one hunk of commit ef44a1ec ("ALSA: sound/core: use memdup_user()"), which replaced a number of kmalloc followed by memcpy with memdup calls. In this case, we are copying from a struct snd_seq_port_info32 to a struct snd_seq_port_info, but the latter is 4 bytes longer than the 32-bit version, so we need to separate kmalloc and copy calls. Fixes: ef44a1ec ('ALSA: sound/core: use memdup_user()') Signed-off-by:
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Takashi Iwai authored
commit ee8413b0 upstream. ALSA timer instance object has a couple of linked lists and they are unlinked unconditionally at snd_timer_stop(). Meanwhile snd_timer_interrupt() unlinks it, but it calls list_del() which leaves the element list itself unchanged. This ends up with unlinking twice, and it was caught by syzkaller fuzzer. The fix is to use list_del_init() variant properly there, too. Reported-by:
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Takashi Iwai authored
commit af368027 upstream. ALSA timer ioctls have an open race and this may lead to a use-after-free of timer instance object. A simplistic fix is to make each ioctl exclusive. We have already tread_sem for controlling the tread, and extend this as a global mutex to be applied to each ioctl. The downside is, of course, the worse concurrency. But these ioctls aren't to be parallel accessible, in anyway, so it should be fine to serialize there. Reported-by:
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Takashi Iwai authored
commit b5a663aa upstream. A slave timer instance might be still accessible in a racy way while operating the master instance as it lacks of locking. Since the master operation is mostly protected with timer->lock, we should cope with it while changing the slave instance, too. Also, some linked lists (active_list and ack_list) of slave instances aren't unlinked immediately at stopping or closing, and this may lead to unexpected accesses. This patch tries to address these issues. It adds spin lock of timer->lock (either from master or slave, which is equivalent) in a few places. For avoiding a deadlock, we ensure that the global slave_active_lock is always locked at first before each timer lock. Also, ack and active_list of slave instances are properly unlinked at snd_timer_stop() and snd_timer_close(). Last but not least, remove the superfluous call of _snd_timer_stop() at removing slave links. This is a noop, and calling it may confuse readers wrt locking. Further cleanup will follow in a later patch. Actually we've got reports of use-after-free by syzkaller fuzzer, and this hopefully fixes these issues. Reported-by:
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Takashi Iwai authored
commit 3567eb6a upstream. ALSA sequencer code has an open race between the timer setup ioctl and the close of the client. This was triggered by syzkaller fuzzer, and a use-after-free was caught there as a result. This patch papers over it by adding a proper queue->timer_mutex lock around the timer-related calls in the relevant code path. Reported-by:
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Takashi Iwai authored
commit 030e2c78 upstream. snd_seq_ioctl_remove_events() calls snd_seq_fifo_clear() unconditionally even if there is no FIFO assigned, and this leads to an Oops due to NULL dereference. The fix is just to add a proper NULL check. Reported-by:
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Mario Kleiner authored
commit 9f660a1c upstream. Without this patch, internal speaker and line-out work, but front headphone output jack stays silent on the Mac Pro 4,1. This code path also gets executed on the MacPro 5,1 due to identical codec SSID, but i don't know if it has any positive or adverse effects there or not. (v2) Implement feedback from Takashi Iwai: Reuse alc889_fixup_mbp_vref and just add a new nid 0x19 for the MacPro 4,1. Signed-off-by:
Mario Kleiner <mario.kleiner.de@gmail.com> Signed-off-by:
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Xiong Zhang authored
commit 3e6db33a upstream. It takes three minutes to enter into hibernation on some OEM SKL machines and we see many codec spurious response after thaw() opertion. This is because HDA is still in D0 state after freeze() call and pci_pm_freeze/pci_pm_freeze_noirq() don't set D3 hot in pci_bus driver. It seems bios still access HDA when system enter into freeze state, HDA will receive codec response interrupt immediately after thaw() call. Because of this unexpected interrupt, HDA enter into a abnormal state and slow down the system enter into hibernation. In this patch, we put HDA into D3 hot state in azx_freeze_noirq() and put HDA into D0 state in azx_thaw_noirq(). V2: Only apply this fix to SKL+ Fix compile error when CONFIG_PM_SLEEP isn't defined [Yet another fix for CONFIG_PM_SLEEP ifdef and the additional comment by tiwai] Signed-off-by:
Xiong Zhang <xiong.y.zhang@intel.com> Signed-off-by:
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David Henningsson authored
commit 02f6ff90 upstream. On the internal mic of the Packard Bell DOTS, one channel has an inverted signal. Add a quirk to fix this up. BugLink: https://bugs.launchpad.net/bugs/1523232Signed-off-by:
David Henningsson <david.henningsson@canonical.com> Signed-off-by:
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Takashi Iwai authored
commit a74a8216 upstream. rme96 driver needs to reset DAC depending on the sample rate, and this results in resetting to the max volume suddenly. It's because of the missing call of snd_rme96_apply_dac_volume(). However, calling this function right after the DAC reset still may not work, and we need some delay before this call. Since the DAC reset and the procedure after that are performed in the spinlock, we delay the DAC volume restore at the end after the spinlock. Reported-and-tested-by:
Sylvain LABOISNE <maeda1@free.fr> Signed-off-by:
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Takashi Iwai authored
commit c932b98c upstream. HP ProBook 6550b needs the same pin fixup applied to other HP B-series laptops with docks for making its headphone and dock headphone jacks working properly. We just need to add the codec SSID to the list. Bugzilla: https://bugzilla.kernel.org/attachment.cgi?id=191971Signed-off-by:
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Alexandra Yates authored
commit 5cf92c8b upstream. Adding Intel codename Lewisburg platform device IDs for audio. [rearranged the position by tiwai] Signed-off-by:
Alexandra Yates <alexandra.yates@linux.intel.com> Signed-off-by:
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Jan Stancek authored
commit 27f972d3 upstream. We encountered a panic on boot in ipmi_si on a dell per320 due to an uninitialized timer as follows. static int smi_start_processing(void *send_info, ipmi_smi_t intf) { /* Try to claim any interrupts. */ if (new_smi->irq_setup) new_smi->irq_setup(new_smi); --> IRQ arrives here and irq handler tries to modify uninitialized timer which triggers BUG_ON(!timer->function) in __mod_timer(). Call Trace: <IRQ> [<ffffffffa0532617>] start_new_msg+0x47/0x80 [ipmi_si] [<ffffffffa053269e>] start_check_enables+0x4e/0x60 [ipmi_si] [<ffffffffa0532bd8>] smi_event_handler+0x1e8/0x640 [ipmi_si] [<ffffffff810f5584>] ? __rcu_process_callbacks+0x54/0x350 [<ffffffffa053327c>] si_irq_handler+0x3c/0x60 [ipmi_si] [<ffffffff810efaf0>] handle_IRQ_event+0x60/0x170 [<ffffffff810f245e>] handle_edge_irq+0xde/0x180 [<ffffffff8100fc59>] handle_irq+0x49/0xa0 [<ffffffff8154643c>] do_IRQ+0x6c/0xf0 [<ffffffff8100ba53>] ret_from_intr+0x0/0x11 /* Set up the timer that drives the interface. */ setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); The following patch fixes the problem. To: Openipmi-developer@lists.sourceforge.net To: Corey Minyard <minyard@acm.org> CC: linux-kernel@vger.kernel.org Signed-off-by:
Jan Stancek <jstancek@redhat.com> Signed-off-by:
Tony Camuso <tcamuso@redhat.com> Signed-off-by:
Corey Minyard <cminyard@mvista.com> Signed-off-by:
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H.J. Lu authored
commit 8c31902c upstream. When decompressing kernel image during x86 bootup, malloc memory for ELF program headers may run out of heap space, which leads to system halt. This patch doubles BOOT_HEAP_SIZE to 64KB. Tested with 32-bit kernel which failed to boot without this patch. Signed-off-by:
H.J. Lu <hjl.tools@gmail.com> Acked-by:
H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@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 Signed-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Mario Kleiner authored
commit 2f0c0b2d upstream. Without the reboot=pci method, the iMac 10,1 simply hangs after printing "Restarting system" at the point when it should reboot. This fixes it. Signed-off-by:
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Paul Mackerras authored
commit c20875a3 upstream. Currently it is possible for userspace (e.g. QEMU) to set a value for the MSR for a guest VCPU which has both of the TS bits set, which is an illegal combination. The result of this is that when we execute a hrfid (hypervisor return from interrupt doubleword) instruction to enter the guest, the CPU will take a TM Bad Thing type of program interrupt (vector 0x700). Now, if PR KVM is configured in the kernel along with HV KVM, we actually handle this without crashing the host or giving hypervisor privilege to the guest; instead what happens is that we deliver a program interrupt to the guest, with SRR0 reflecting the address of the hrfid instruction and SRR1 containing the MSR value at that point. If PR KVM is not configured in the kernel, then we try to run the host's program interrupt handler with the MMU set to the guest context, which almost certainly causes a host crash. This closes the hole by making kvmppc_set_msr_hv() check for the illegal combination and force the TS field to a safe value (00, meaning non-transactional). Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Ouyang Zhaowei (Charles) authored
commit 6a1f5137 upstream. On a cancelled suspend the vcpu_info location does not change (it's still in the per-cpu area registered by xen_vcpu_setup()). So do not call xen_hvm_init_shared_info() which would make the kernel think its back in the shared info. With the wrong vcpu_info, events cannot be received and the domain will hang after a cancelled suspend. Signed-off-by:
Charles Ouyang <ouyangzhaowei@huawei.com> Reviewed-by:
Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by:
David Vrabel <david.vrabel@citrix.com> Signed-off-by:
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Boris Ostrovsky authored
commit 9c17d965 upstream. Doing so will cause the grant to be unmapped and then, during fault handling, the fault to be mistakenly treated as NUMA hint fault. In addition, even if those maps could partcipate in NUMA balancing, it wouldn't provide any benefit since we are unable to determine physical page's node (even if/when VNUMA is implemented). Marking grant maps' VMAs as VM_IO will exclude them from being part of NUMA balancing. Signed-off-by:
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Dmitry V. Levin authored
commit 22eab110 upstream. When restarting a syscall with regs->ax == -ERESTART_RESTARTBLOCK, regs->ax is assigned to a restart_syscall number. For x32 tasks, this syscall number must have __X32_SYSCALL_BIT set, otherwise it will be an x86_64 syscall number instead of a valid x32 syscall number. This issue has been there since the introduction of x32. Reported-by: strace/tests/restart_syscall.test Reported-and-tested-by:
Elvira Khabirova <lineprinter0@gmail.com> Signed-off-by:
Dmitry V. Levin <ldv@altlinux.org> Cc: Elvira Khabirova <lineprinter0@gmail.com> Link: http://lkml.kernel.org/r/20151130215436.GA25996@altlinux.orgSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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- 23 Jan, 2016 2 commits
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Greg Kroah-Hartman authored
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Yevgeny Pats authored
commit 23567fd0 upstream. This fixes CVE-2016-0728. If a thread is asked to join as a session keyring the keyring that's already set as its session, we leak a keyring reference. This can be tested with the following program: #include <stddef.h> #include <stdio.h> #include <sys/types.h> #include <keyutils.h> int main(int argc, const char *argv[]) { int i = 0; key_serial_t serial; serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING, "leaked-keyring"); if (serial < 0) { perror("keyctl"); return -1; } if (keyctl(KEYCTL_SETPERM, serial, KEY_POS_ALL | KEY_USR_ALL) < 0) { perror("keyctl"); return -1; } for (i = 0; i < 100; i++) { serial = keyctl(KEYCTL_JOIN_SESSION_KEYRING, "leaked-keyring"); if (serial < 0) { perror("keyctl"); return -1; } } return 0; } If, after the program has run, there something like the following line in /proc/keys: 3f3d898f I--Q--- 100 perm 3f3f0000 0 0 keyring leaked-keyring: empty with a usage count of 100 * the number of times the program has been run, then the kernel is malfunctioning. If leaked-keyring has zero usages or has been garbage collected, then the problem is fixed. Reported-by:
Yevgeny Pats <yevgeny@perception-point.io> Signed-off-by:
David Howells <dhowells@redhat.com> Acked-by:
Don Zickus <dzickus@redhat.com> Acked-by:
Prarit Bhargava <prarit@redhat.com> Acked-by:
Jarod Wilson <jarod@redhat.com> Signed-off-by:
James Morris <james.l.morris@oracle.com> Signed-off-by:
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