- 21 Jul, 2014 24 commits
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Russell King authored
commit 3683f44c upstream. While debugging the FEC ethernet driver using stacktrace, it was noticed that the stacktraces always begin as follows: [<c00117b4>] save_stack_trace_tsk+0x0/0x98 [<c0011870>] save_stack_trace+0x24/0x28 ... This is because the stack trace code includes the stack frames for itself. This is incorrect behaviour, and also leads to "skip" doing the wrong thing (which is the number of stack frames to avoid recording.) Perversely, it does the right thing when passed a non-current thread. Fix this by ensuring that we have a known constant number of frames above the main stack trace function, and always skip these. Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
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Jeff Mahoney authored
commit 22e7478d upstream. Prior to commit 0e4f6a79 (Fix reiserfs_file_release()), reiserfs truncates serialized on i_mutex. They mostly still do, with the exception of reiserfs_file_release. That blocks out other writers via the tailpack mutex and the inode openers counter adjusted in reiserfs_file_open. However, NFS will call reiserfs_setattr without having called ->open, so we end up with a race when nfs is calling ->setattr while another process is releasing the file. Ultimately, it triggers the BUG_ON(inode->i_size != new_file_size) check in maybe_indirect_to_direct. The solution is to pull the lock into reiserfs_setattr to encompass the truncate_setsize call as well. Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Bart Van Assche authored
commit 024ca901 upstream. Avoid that the loops that iterate over the request ring can encounter a pointer to a SCSI command in req->scmnd that is no longer associated with that request. If the function srp_unmap_data() is invoked twice for a SCSI command that is not in flight then that would cause ib_fmr_pool_unmap() to be invoked with an invalid pointer as argument, resulting in a kernel oops. Reported-by:
Sagi Grimberg <sagig@mellanox.com> Reference: http://thread.gmane.org/gmane.linux.drivers.rdma/19068/focus=19069Signed-off-by:
Bart Van Assche <bvanassche@acm.org> Reviewed-by:
Roland Dreier <roland@purestorage.com> Signed-off-by:
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Kees Cook authored
commit 1b15d2e5 upstream. Some drivers use the first HID report in the list instead of using an index. In these cases, validation uses ID 0, which was supposed to mean "first known report". This fixes the problem, which was causing at least the lgff family of devices to stop working since hid_validate_values was being called with ID 0, but the devices used single numbered IDs for their reports: 0x05, 0x01, /* Usage Page (Desktop), */ 0x09, 0x05, /* Usage (Gamepad), */ 0xA1, 0x01, /* Collection (Application), */ 0xA1, 0x02, /* Collection (Logical), */ 0x85, 0x01, /* Report ID (1), */ ... Reported-by:
Simon Wood <simon@mungewell.org> Signed-off-by:
Kees Cook <keescook@chromium.org> Reviewed-by:
Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Chander Kashyap authored
commit 086abb58 upstream. In of_init_opp_table function, if a failure to add an OPP is detected, the count of OPPs, yet to be added is not updated. Fix this by decrementing this count on failure as well. Signed-off-by:
Chander Kashyap <k.chander@samsung.com> Signed-off-by:
Inderpal Singh <inderpal.s@samsung.com> Acked-by:
Viresh Kumar <viresh.kumar@linaro.org> Acked-by:
Nishanth Menon <nm@ti.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> [ kamal: backport to 3.8-stable: context ] Signed-off-by:
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Joe Handzik authored
commit 3b7a45e5 upstream. Signed-off-by:
Scott Teel <scott.teel@hp.com> Signed-off-by:
Joe Handzik <joseph.t.handzik@hp.com> Signed-off-by:
Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Mike Miller authored
commit 97b9f53d upstream. This patch adds the PCI ID's for HP Smart Array Gen9 controllers. Please consider this patch for inclusion. Signed-off-by:
Mike Miller <mike.miller@hp.com> Signed-off-by:
James Bottomley <JBottomley@Parallels.com> Signed-off-by:
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Lv Zheng authored
commit 73577d1d upstream. This patch fixes the following issue: If DSDT is customized, no local DSDT copy is needed. References: https://bugzilla.kernel.org/show_bug.cgi?id=69711Signed-off-by:
Enrico Etxe Arte <goitizena.generoa@gmail.com> Signed-off-by:
Lv Zheng <lv.zheng@intel.com> [rjw: Subject] Signed-off-by:
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hujianyang authored
commit 691a7c6f upstream. There is a race condition in UBIFS: Thread A (mmap) Thread B (fsync) ->__do_fault ->write_cache_pages -> ubifs_vm_page_mkwrite -> budget_space -> lock_page -> release/convert_page_budget -> SetPagePrivate -> TestSetPageDirty -> unlock_page -> lock_page -> TestClearPageDirty -> ubifs_writepage -> do_writepage -> release_budget -> ClearPagePrivate -> unlock_page -> !(ret & VM_FAULT_LOCKED) -> lock_page -> set_page_dirty -> ubifs_set_page_dirty -> TestSetPageDirty (set page dirty without budgeting) -> unlock_page This leads to situation where we have a diry page but no budget allocated for this page, so further write-back may fail with -ENOSPC. In this fix we return from page_mkwrite without performing unlock_page. We return VM_FAULT_LOCKED instead. After doing this, the race above will not happen. Signed-off-by:
hujianyang <hujianyang@huawei.com> Tested-by:
Laurence Withers <lwithers@guralp.com> Signed-off-by:
Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by:
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Emmanuel Grumbach authored
commit 501fd989 upstream. Some races with the hardware can happen when we take ownership of the device. Don't give up after the first try. Reviewed-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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Mike Frysinger authored
commit 7fd44dac upstream. The io_setup takes a pointer to a context id of type aio_context_t. This in turn is typed to a __kernel_ulong_t. We could tweak the exported headers to define this as a 64bit quantity for specific ABIs, but since we already have a 32bit compat shim for the x86 ABI, let's just re-use that logic. The libaio package is also written to expect this as a pointer type, so a compat shim would simplify that. The io_submit func operates on an array of pointers to iocb structs. Padding out the array to be 64bit aligned is a huge pain, so convert it over to the existing compat shim too. We don't convert io_getevents to the compat func as its only purpose is to handle the timespec struct, and the x32 ABI uses 64bit times. With this change, the libaio package can now pass its testsuite when built for the x32 ABI. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Link: http://lkml.kernel.org/r/1399250595-5005-1-git-send-email-vapier@gentoo.org Cc: H.J. Lu <hjl.tools@gmail.com> Signed-off-by:
H. Peter Anvin <hpa@zytor.com> Signed-off-by:
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Thomas Gleixner authored
commit 1e77d0a1 upstream. Till reported that the spurious interrupt detection of threaded interrupts is broken in two ways: - note_interrupt() is called for each action thread of a shared interrupt line. That's wrong as we are only interested whether none of the device drivers felt responsible for the interrupt, but by calling multiple times for a single interrupt line we account IRQ_NONE even if one of the drivers felt responsible. - note_interrupt() when called from the thread handler is not serialized. That leaves the members of irq_desc which are used for the spurious detection unprotected. To solve this we need to defer the spurious detection of a threaded interrupt to the next hardware interrupt context where we have implicit serialization. If note_interrupt is called with action_ret == IRQ_WAKE_THREAD, we check whether the previous interrupt requested a deferred check. If not, we request a deferred check for the next hardware interrupt and return. If set, we check whether one of the interrupt threads signaled success. Depending on this information we feed the result into the spurious detector. If one primary handler of a shared interrupt returns IRQ_HANDLED we disable the deferred check of irq threads on the same line, as we have found at least one device driver who cared. Reported-by:
Till Straumann <strauman@slac.stanford.edu> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Tested-by:
Austin Schuh <austin@peloton-tech.com> Cc: Oliver Hartkopp <socketcan@hartkopp.net> Cc: Wolfgang Grandegger <wg@grandegger.com> Cc: Pavel Pisa <pisa@cmp.felk.cvut.cz> Cc: Marc Kleine-Budde <mkl@pengutronix.de> Cc: linux-can@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1303071450130.22263@ionosSigned-off-by:
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H. Peter Anvin authored
commit 246f2d2e upstream. It is not safe to use LAR to filter when to go down the espfix path, because the LDT is per-process (rather than per-thread) and another thread might change the descriptors behind our back. Fortunately it is always *safe* (if a bit slow) to go down the espfix path, and a 32-bit LDT stack segment is extremely rare. Signed-off-by:
H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.comSigned-off-by:
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Thomas Jarosch authored
commit 7c82126a upstream. After a CPU upgrade while keeping the same mainboard, we faced "spurious interrupt" problems again. It turned out that the new CPU also featured a new GPU with a different PCI ID. Add this PCI ID to the quirk table. Probably all other Intel GPU PCI IDs are affected, too, but I don't want to add them without a test system. See f67fd55f ("PCI: Add quirk for still enabled interrupts on Intel Sandy Bridge GPUs") for some history. [bhelgaas: add f67fd55f reference, stable tag] Signed-off-by:
Thomas Jarosch <thomas.jarosch@intra2net.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Signed-off-by:
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Gavin Shan authored
commit 54f112a3 upstream. In pseries_eeh_get_state(), EEH_STATE_UNAVAILABLE is always overwritten by EEH_STATE_NOT_SUPPORT because of the missed "break" there. The patch fixes the issue. Reported-by:
Joe Perches <joe@perches.com> Signed-off-by:
Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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Felipe Balbi authored
commit da64c27d upstream. LDISCs shouldn't call tty->ops->write() from within ->write_wakeup(). ->write_wakeup() is called with port lock taken and IRQs disabled, tty->ops->write() will try to acquire the same port lock and we will deadlock. Acked-by:
Marcel Holtmann <marcel@holtmann.org> Reviewed-by:
Peter Hurley <peter@hurleysoftware.com> Reported-by:
Huang Shijie <b32955@freescale.com> Signed-off-by:
Felipe Balbi <balbi@ti.com> Tested-by:
Andreas Bießmann <andreas@biessmann.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Asai Thambi S P authored
commit d1e714db upstream. A hardware quirk in P320h/P420m interfere with PCIe transactions on some AMD chipsets, making P320h/P420m unusable. This workaround is to disable ERO and NoSnoop bits in the parent and root complex for normal functioning of these devices NOTE: This workaround is specific to AMD chipset with a PCIe upstream device with device id 0x5aXX Signed-off-by:
Asai Thambi S P <asamymuthupa@micron.com> Signed-off-by:
Sam Bradshaw <sbradshaw@micron.com> Signed-off-by:
Jens Axboe <axboe@fb.com> Signed-off-by:
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Asai Thambi S P authored
commit af5ded8c upstream. In module exit, dfs_parent and it's subtree were removed before unregistering with pci. When debugfs entry for each device is attempted to remove in pci_remove() context, they don't exist, as dfs_parent and its children were already ripped apart. Modified to first unregister with pci and then remove dfs_parent. Signed-off-by:
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Asai Thambi S P authored
commit 670a6414 upstream. Increased timeout for STANDBY IMMEDIATE command to 2 minutes. Signed-off-by:
Selvan Mani <smani@micron.com> Signed-off-by:
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Felipe Balbi authored
commit 687ef981 upstream. so it seems like DWC3 IP doesn't clear stalls automatically when we disable an endpoint, because of that, we _must_ make sure stalls are cleared before clearing the proper bit in DALEPENA register. Reported-by:
Johannes Stezenbach <js@sig21.net> Signed-off-by:
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Trond Myklebust authored
commit 43b6535e upstream. Fix a bug, whereby nfs_update_inode() was declaring the inode to be up to date despite not having checked all the attributes. The bug occurs because the temporary variable in which we cache the validity information is 'sanitised' before reapplying to nfsi->cache_validity. Reported-by:
Kinglong Mee <kinglongmee@gmail.com> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by:
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Edward Lin authored
commit 08a56226 upstream. With win8 capabiltiy, the ACPI backlight control is broken. The system also loses backlight setting when resuming from S3. Add this model to the the ACPI video detect blacklist to make backlight functionality work. Although backlight functionality works via video.use_native_backlight=1, this approach may be safer. Signed-off-by:
Edward Lin <yidi.lin@canonical.com> Signed-off-by:
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Florian Westphal authored
commit 945b2b2d upstream. Quoting Samu Kallio: Basically what's happening is, during netns cleanup, nf_nat_net_exit gets called before ipv4_net_exit. As I understand it, nf_nat_net_exit is supposed to kill any conntrack entries which have NAT context (through nf_ct_iterate_cleanup), but for some reason this doesn't happen (perhaps something else is still holding refs to those entries?). When ipv4_net_exit is called, conntrack entries (including those with NAT context) are cleaned up, but the nat_bysource hashtable is long gone - freed in nf_nat_net_exit. The bug happens when attempting to free a conntrack entry whose NAT hash 'prev' field points to a slot in the freed hash table (head for that bin). We ignore conntracks with null nat bindings. But this is wrong, as these are in bysource hash table as well. Restore nat-cleaning for the netns-is-being-removed case. bug: https://bugzilla.kernel.org/show_bug.cgi?id=65191 Fixes: c2d421e1 ('netfilter: nf_nat: fix race when unloading protocol modules') Reported-by:
Samu Kallio <samu.kallio@aberdeencloud.com> Debugged-by:
Florian Westphal <fw@strlen.de> Tested-by:
Pablo Neira Ayuso <pablo@netfilter.org> [ kamal: backport to 3.8-stable: context ] Cc: Chris J Arges <chris.j.arges@canonical.com> Signed-off-by:
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Todd Fujinaka authored
commit e66c083a upstream. RQDPC on i210/i211 is R/W not ReadClear. Clear after reading. Signed-off-by:
Todd Fujinaka <todd.fujinaka@intel.com> Tested-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Tim Gardner <tim.gardner@canonical.com> Signed-off-by:
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- 01 Jul, 2014 1 commit
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Kamal Mostafa authored
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- 30 Jun, 2014 4 commits
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Greg Kroah-Hartman authored
commit 206a81c1 upstream. The lzo decompressor can, if given some really crazy data, possibly overrun some variable types. Modify the checking logic to properly detect overruns before they happen. Reported-by:
"Don A. Bailey" <donb@securitymouse.com> Tested-by:
Luis Henriques <luis.henriques@canonical.com> Signed-off-by:
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Markus F.X.J. Oberhumer authored
commit 8b975bd3 upstream. This commit updates the kernel LZO code to the current upsteam version which features a significant speed improvement - benchmarking the Calgary and Silesia test corpora typically shows a doubled performance in both compression and decompression on modern i386/x86_64/powerpc machines. Signed-off-by:
Markus F.X.J. Oberhumer <markus@oberhumer.com> CVE-2014-4608 Signed-off-by:
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Markus F.X.J. Oberhumer authored
commit b6bec26c upstream. Rename the source file to match the function name and thereby also make room for a possible future even slightly faster "non-safe" decompressor version. Signed-off-by:
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Kamal Mostafa authored
[3.8-stable-only] Revert "ARM: OMAP3: clock: Back-propagate rate change from cam_mclk to dpll4_m5 on all OMAP3 platforms" This reverts commit 5cc70500. Commit is not suitable for 3.8-based kernels; breaks the OMAP build (oops)! Signed-off-by:
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- 27 Jun, 2014 1 commit
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Kamal Mostafa authored
Signed-off-by:
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- 24 Jun, 2014 10 commits
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Andrey Ryabinin authored
commit 624483f3 upstream. While working address sanitizer for kernel I've discovered use-after-free bug in __put_anon_vma. For the last anon_vma, anon_vma->root freed before child anon_vma. Later in anon_vma_free(anon_vma) we are referencing to already freed anon_vma->root to check rwsem. This fixes it by freeing the child anon_vma before freeing anon_vma->root. Signed-off-by:
Andrey Ryabinin <a.ryabinin@samsung.com> Acked-by:
Peter Zijlstra <peterz@infradead.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Nicholas Bellinger authored
commit f1453773 upstream. This patch fixes a OOPs where an attempt to write to the per-device alua_access_state configfs attribute at: /sys/kernel/config/target/core/$HBA/$DEV/alua/$TG_PT_GP/alua_access_state results in an NULL pointer dereference when the backend device has not yet been configured. This patch adds an explicit check for DF_CONFIGURED, and fails with -ENODEV to avoid this case. Reported-by:
Chris Boot <crb@tiger-computing.co.uk> Reported-by:
Philip Gaw <pgaw@darktech.org.uk> Cc: Chris Boot <crb@tiger-computing.co.uk> Cc: Philip Gaw <pgaw@darktech.org.uk> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
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Thomas Gleixner authored
commit 54a21788 upstream. The current implementation of lookup_pi_state has ambigous handling of the TID value 0 in the user space futex. We can get into the kernel even if the TID value is 0, because either there is a stale waiters bit or the owner died bit is set or we are called from the requeue_pi path or from user space just for fun. The current code avoids an explicit sanity check for pid = 0 in case that kernel internal state (waiters) are found for the user space address. This can lead to state leakage and worse under some circumstances. Handle the cases explicit: Waiter | pi_state | pi->owner | uTID | uODIED | ? [1] NULL | --- | --- | 0 | 0/1 | Valid [2] NULL | --- | --- | >0 | 0/1 | Valid [3] Found | NULL | -- | Any | 0/1 | Invalid [4] Found | Found | NULL | 0 | 1 | Valid [5] Found | Found | NULL | >0 | 1 | Invalid [6] Found | Found | task | 0 | 1 | Valid [7] Found | Found | NULL | Any | 0 | Invalid [8] Found | Found | task | ==taskTID | 0/1 | Valid [9] Found | Found | task | 0 | 0 | Invalid [10] Found | Found | task | !=taskTID | 0/1 | Invalid [1] Indicates that the kernel can acquire the futex atomically. We came came here due to a stale FUTEX_WAITERS/FUTEX_OWNER_DIED bit. [2] Valid, if TID does not belong to a kernel thread. If no matching thread is found then it indicates that the owner TID has died. [3] Invalid. The waiter is queued on a non PI futex [4] Valid state after exit_robust_list(), which sets the user space value to FUTEX_WAITERS | FUTEX_OWNER_DIED. [5] The user space value got manipulated between exit_robust_list() and exit_pi_state_list() [6] Valid state after exit_pi_state_list() which sets the new owner in the pi_state but cannot access the user space value. [7] pi_state->owner can only be NULL when the OWNER_DIED bit is set. [8] Owner and user space value match [9] There is no transient state which sets the user space TID to 0 except exit_robust_list(), but this is indicated by the FUTEX_OWNER_DIED bit. See [4] [10] There is no transient state which leaves owner and user space TID out of sync. Signed-off-by:
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Thomas Gleixner authored
commit 13fbca4c upstream. If the owner died bit is set at futex_unlock_pi, we currently do not cleanup the user space futex. So the owner TID of the current owner (the unlocker) persists. That's observable inconsistant state, especially when the ownership of the pi state got transferred. Clean it up unconditionally. Signed-off-by:
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Thomas Gleixner authored
commit b3eaa9fc upstream. We need to protect the atomic acquisition in the kernel against rogue user space which sets the user space futex to 0, so the kernel side acquisition succeeds while there is existing state in the kernel associated to the real owner. Verify whether the futex has waiters associated with kernel state. If it has, return -EINVAL. The state is corrupted already, so no point in cleaning it up. Subsequent calls will fail as well. Not our problem. [ tglx: Use futex_top_waiter() and explain why we do not need to try restoring the already corrupted user space state. ] Signed-off-by:
Darren Hart <dvhart@linux.intel.com> Cc: Kees Cook <keescook@chromium.org> Cc: Will Drewry <wad@chromium.org> Signed-off-by:
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Thomas Gleixner authored
futex-prevent-requeue-pi-on-same-futex.patch futex: Forbid uaddr == uaddr2 in futex_requeue(..., requeue_pi=1) commit e9c243a5 upstream. If uaddr == uaddr2, then we have broken the rule of only requeueing from a non-pi futex to a pi futex with this call. If we attempt this, then dangling pointers may be left for rt_waiter resulting in an exploitable condition. This change brings futex_requeue() in line with futex_wait_requeue_pi() which performs the same check as per commit 6f7b0a2a ("futex: Forbid uaddr == uaddr2 in futex_wait_requeue_pi()") [ tglx: Compare the resulting keys as well, as uaddrs might be different depending on the mapping ] Fixes CVE-2014-3153. Reported-by: Pinkie Pie Signed-off-by:
Will Drewry <wad@chromium.org> Signed-off-by:
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Takashi Iwai authored
commit 192a98e2 upstream. The conversion to a fixup table for Replacer model with ALC260 in commit 20f7d928 took the wrong widget NID for COEF setups. Namely, NID 0x1a should have been used instead of NID 0x20, which is the common node for all Realtek codecs but ALC260. Fixes: 20f7d928 ('ALSA: hda/realtek - Replace ALC260 model=replacer with the auto-parser') Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Ronan Marquet authored
commit e30cf2d2 upstream. Correcion of wrong fixup entries add in commit ca8f0424 to replace static model quirk for PB V7900 laptop (will model). [note: the removal of ALC260_FIXUP_HP_PIN_0F chain is also needed as a part of the fix; otherwise the pin is set up wrongly as a headphone, and user-space (PulseAudio) may be wrongly trying to detect the jack state -- tiwai] Fixes: ca8f0424 ('ALSA: hda/realtek - Add the fixup codes for ALC260 model=will') Signed-off-by:
Ronan Marquet <ronan.marquet@orange.fr> Signed-off-by:
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Mathias Nyman authored
commit 5dc2808c upstream. Lists of endpoints are stored for bandwidth calculation for roothub ports. Make sure we remove all endpoints from the list before the whole device, containing its endpoints list_head stuctures, is freed. This used to be done in the wrong order in xhci_mem_cleanup(), and triggered an oops in resume from S4 (hibernate). Tested-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
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NeilBrown authored
commit 3991b31e upstream. If mddev->ro is set, md_to_sync will (correctly) abort. However in that case MD_RECOVERY_INTR isn't set. If a RESHAPE had been requested, then ->finish_reshape() will be called and it will think the reshape was successful even though nothing happened. Normally a resync will not be requested if ->ro is set, but if an array is stopped while a reshape is on-going, then when the array is started, the reshape will be restarted. If the array is also set read-only at this point, the reshape will instantly appear to success, resulting in data corruption. Consequently, this patch is suitable for any -stable kernel. Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
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