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2012-07-16ACPI sysfs.c strlen fixPavel Vasilyev
commit 9f132652d94c96476b0b0a8caf0c10e96ab10fa8 upstream. Current code is ignoring the last character of "enable" and "disable" in comparisons. https://bugzilla.kernel.org/show_bug.cgi?id=33732 Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ACPI, x86: fix Dell M6600 ACPI reboot regression via DMIZhang Rui
commit 76eb9a30db4bc8fd172f9155247264b5f2686d7b upstream. Dell Precision M6600 is known to require PCI reboot, so add it to the reboot blacklist in pci_reboot_dmi_table[]. https://bugzilla.kernel.org/show_bug.cgi?id=42749 cc: x86@kernel.org Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overridingFeng Tang
commit f6b54f083cc66cf9b11d2120d8df3c2ad4e0836d upstream. This is the 2nd part of fix for kernel bugzilla 40002: "IRQ 0 assigned to VGA" https://bugzilla.kernel.org/show_bug.cgi?id=40002 The root cause is the buggy FW, whose ACPI tables assign the GSI 16 to 2 irqs 0 and 16(VGA), and the VGA is the right owner of GSI 16. So add a quirk to ignore the irq0 overriding GSI 16 for the FUJITSU SIEMENS AMILO PRO V2030 platform will solve this issue. Reported-and-tested-by: Szymon Kowalczyk <fazerxlo@o2.pl> Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ACPI: Remove one board specific WARN when ignoring timer overridingFeng Tang
commit 7f68b4c2e158019c2ec494b5cfbd9c83b4e5b253 upstream. Current WARN msg is only for the ati_ixp4x0 board, while this function is used by mulitple platforms. So this one board specific warning is not appropriate any more. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ACPI: Make acpi_skip_timer_override cover all source_irq==0 casesFeng Tang
commit ae10ccdc3093486f8c2369d227583f9d79f628e5 upstream. Currently when acpi_skip_timer_override is set, it only cover the (source_irq == 0 && global_irq == 2) cases. While there is also platform which need use this option and its global_irq is not 2. This patch will extend acpi_skip_timer_override to cover all timer overriding cases as long as the source irq is 0. This is the first part of a fix to kernel bug bugzilla 40002: "IRQ 0 assigned to VGA" https://bugzilla.kernel.org/show_bug.cgi?id=40002 Reported-and-tested-by: Szymon Kowalczyk <fazerxlo@o2.pl> Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ACPI, APEI, Avoid too much error reporting in runtimeHuang Ying
commit 34ddeb035d704eafdcdb3cbc781894300136c3c4 upstream. This patch fixed the following bug. https://bugzilla.kernel.org/show_bug.cgi?id=43282 This is caused by a firmware bug checking (checking generic address register provided by firmware) in runtime. The checking should be done in address mapping time instead of runtime to avoid too much error reporting in runtime. Reported-by: Pawel Sikora <pluto@agmk.net> Signed-off-by: Huang Ying <ying.huang@intel.com> Tested-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16acpi_pad: fix power_saving thread deadlockStuart Hayes
commit 5f1601261050251a5ca293378b492a69d590dacb upstream. The acpi_pad driver can get stuck in destroy_power_saving_task() waiting for kthread_stop() to stop a power_saving thread. The problem is that the isolated_cpus_lock mutex is owned when destroy_power_saving_task() calls kthread_stop(), which waits for a power_saving thread to end, and the power_saving thread tries to acquire the isolated_cpus_lock when it calls round_robin_cpu(). This patch fixes the issue by making round_robin_cpu() use its own mutex. https://bugzilla.kernel.org/show_bug.cgi?id=42981 Signed-off-by: Stuart Hayes <Stuart_Hayes@Dell.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ACPI video: Still use ACPI backlight control if _DOS doesn't existZhang Rui
commit b03738430c7537d5f87948e0b35d8aaf2688c6b4 upstream. This fixes a regression in 3.4-rc1 caused by commit ea9f8856bd6d4ed45885b06a338f7362cd6c60e5 (ACPI video: Harden video bus adding.) Some platforms don't have _DOS control method, but the ACPI backlight still works. We should not invoke _DOS for these platforms. https://bugzilla.kernel.org/show_bug.cgi?id=43168 Cc: Igor Murzov <intergalactic.anonymous@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16drm/radeon: fix VM page table setup on SIAlex Deucher
commit c21b328ea8c7c71cd2daf50557db440bbaa7ef55 upstream. Cayman and trinity allow for variable sized VM page tables, but SI requires that all page tables be the same size. The current code assumes variablely sized VM page tables so SI may end up with part of each page table overlapping with other memory which could end up being interpreted by the VM hw as garbage. Change the code to better accomodate SI. Allocate enough space for at least 2 full page tables and always set last_pfn to max_pfn on SI so each VM is backed by a full page table. This limits us to only 2 VMs active at any given time on SI. This will be rectified and the code can be reunified once we move to two level page tables. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16drm/i915: Fix eDP blank screen after S3 resume on HP desktopsTakashi Iwai
commit 6db65cbb941f9d433659bdad02b307f6d94465df upstream. This patch fixes the problem on some HP desktop machines with eDP which give blank screens after S3 resume. It turned out that BLC_PWM_CPU_CTL must be written after BLC_PWM_CPU_CTL2. Otherwise it doesn't take effect on these SNB machines. Tested with 3.5-rc3 kernel. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49233 Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16drm/nouveau/fbcon: using nv_two_heads is not a good ideaBen Skeggs
commit 9bd0c15fcfb42f6245447c53347d65ad9e72080b upstream. nv_two_heads() was never meant to be used outside of pre-nv50 code. The code checks for >= NV_10 for 2 CRTCs, then downgrades a few specific chipsets to 1 CRTC based on (pci_device & 0x0ff0). The breakage example seen is on GTX 560Ti, with a pciid of 0x1200, which gets detected as an NV20 (0x020x) with 1 CRTC by nv_two_heads(), causing memory corruption because there's actually 2 CRTCs.. This switches fbcon to use the CRTC count directly from the mode_config structure, which will also fix the same issue on Kepler boards which have 4 CRTCs. Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16drm/edid: don't return stack garbage from supports_rbDaniel Vetter
commit b196a4980ff7bb54db478e2a408dc8b12be15304 upstream. We need to initialize this to false, because the is_rb callback only ever sets it to true. Noticed while reading through the code. Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16Btrfs: run delayed directory updates during log replayChris Mason
commit b6305567e7d31b0bec1b8cb9ec0cadd7f7086f5f upstream. While we are resolving directory modifications in the tree log, we are triggering delayed metadata updates to the filesystem btrees. This commit forces the delayed updates to run so the replay code can find any modifications done. It stops us from crashing because the directory deleltion replay expects items to be removed immediately from the tree. Signed-off-by: Chris Mason <chris.mason@fusionio.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ASoC: tlv320aic3x: Fix codec pll configure bugHebbar, Gururaja
commit c9fe573a6584034670c1a55ee8162d623519cbbf upstream. In sound/soc/codecs/tlv320aic3x.c data = snd_soc_read(codec, AIC3X_PLL_PROGA_REG); snd_soc_write(codec, AIC3X_PLL_PROGA_REG, data | (pll_p << PLLP_SHIFT)); In the above code, pll-p value is OR'ed with previous value without clearing it. Bug is not seen if pll-p value doesn't change across Sampling frequency. However on some platforms (like AM335x EVM-SK), pll-p may have different values across different sampling frequencies. In such case, above code configures the pll with a wrong value. Because of this bug, when a audio stream is played with pll value different from previous stream, audio is heard as differently(like its stretched). Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ASoC: wm2200: Add missing BCLK rateMark Brown
commit b0dfa4541e48ac4cc5f017285432c89923ad0f58 upstream. Without this very high BCLKs will be configured incorrectly. Reported-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: enable serialize_regmode for non-PCIE AR9287Panayiotis Karabassis
commit 7508b657967cf664b5aa0f6367d05016e7e3bc2a upstream. https://bugzilla.kernel.org/show_bug.cgi?id=42903 Based on the work of <fynivx@gmail.com> Signed-off-by: Panayiotis Karabassis <panayk@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: fix dynamic WEP related regressionFelix Fietkau
commit bed3d9c0b71f9afbfec905cb6db3b9f16be29d4d upstream. commit 7a532fe7131216a02c81a6c1b1f8632da1195a58 ath9k_hw: fix interpretation of the rx KeyMiss flag This commit used the rx key miss indication to detect packets that were passed from the hardware without being decrypted, however it seems that this bit is not only undefined in the static WEP case, but also for dynamically allocated WEP keys. This caused a regression when using WEP-LEAP. This patch fixes the regression by keeping track of which key indexes refer to CCMP keys and only using the key miss indication for those. Reported-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k_htc: configure bssid on ASSOC/IBSS changeRajkumar Manoharan
commit 931cb03afed7b541392295f3afc4638da32f08a0 upstream. After the change "mac80211: remove spurious BSSID change flag", BSS_CHANGED_BSSID will not be passed on association or IBSS status changes. So it could be better to program bssid on ASSOC or IBSS change notification. Not doing so, is affecting the packet transmission. Reported-by: Michael Leun <lkml20120218@newton.leun.net> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k_hw: avoid possible infinite loop in ar9003_get_pll_sqsum_dvcMohammed Shafi Shajakhan
commit f18e3c6b67f448ec47b3a5b242789bd3d5644879 upstream. "ath9k: Fix softlockup in AR9485" with commit id 64bc1239c790e051ff677e023435d770d2ffa174 fixed the reported issue, yet its better to avoid the possible infinite loop in ar9003_get_pll_sqsum_dvc by having a timeout as suggested by ath9k maintainers. http://www.spinics.net/lists/linux-wireless/msg92126.html. Based on my testing PLL's locking measurement is done in ~200us (2 iterations). Cc: Rolf Offermanns <rolf.offermanns@gmx.net> Cc: Sujith Manoharan <c_manoha@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: fix invalid pointer access in the tx pathFelix Fietkau
commit 80b08a8d8829a58b5db14b1417151094cc28face upstream. After setup_frame_info has been called, only info->control.rates is still valid, other control fields have been overwritten by the ath_frame_info data. Move the access to info->control.vif for checking short preamble to setup_frame_info before it gets overwritten. This regression was introduced in commit d47a61aa "ath9k: Fix multi-VIF BSS handling" Signed-off-by: Felix Fietkau <nbd@openwrt.org> Reported-by: Thomas Hühn <thomas@net.t-labs.tu-berlin.de> Acked-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: fix a tx rate duration calculation bugFelix Fietkau
commit 76591bea9714a58d8924154068c78d702eb2cb17 upstream. The rate pointer variable for a rate series is used in a loop before it is initialized. This went unnoticed because it was used earlier for the RTS/CTS rate. This bug can lead to the wrong PHY type being passed to the duration calculation function. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: Fix softlockup in AR9485Mohammed Shafi Shajakhan
commit bcb7ad7bcbef030e6ba71ede1f9866368aca7c99 upstream. steps to recreate: load latest ath9k driver with AR9485 stop the network-manager and wpa_supplicant bring the interface up Call Trace: [<ffffffffa0517490>] ? ath_hw_check+0xe0/0xe0 [ath9k] [<ffffffff812cd1e8>] __const_udelay+0x28/0x30 [<ffffffffa03bae7a>] ar9003_get_pll_sqsum_dvc+0x4a/0x80 [ath9k_hw] [<ffffffffa05174eb>] ath_hw_pll_work+0x5b/0xe0 [ath9k] [<ffffffff810744fe>] process_one_work+0x11e/0x470 [<ffffffff8107530f>] worker_thread+0x15f/0x360 [<ffffffff810751b0>] ? manage_workers+0x230/0x230 [<ffffffff81079af3>] kthread+0x93/0xa0 [<ffffffff815fd3a4>] kernel_thread_helper+0x4/0x10 [<ffffffff81079a60>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff815fd3a0>] ? gs_change+0x13/0x13 ensure that the PLL-WAR for AR9485/AR9340 is executed only if the STA is associated (or) IBSS/AP mode had started beaconing. Ideally this WAR is needed to recover from some rare beacon stuck during stress testing. Before the STA is associated/IBSS had started beaconing, PLL4(0x1618c) always seem to have zero even though we had configured PLL3(0x16188) to query about PLL's locking status. When we keep on polling infinitely PLL4's 8th bit(ie check for PLL locking measurements is done), machine hangs due to softlockup. fixes https://bugzilla.redhat.com/show_bug.cgi?id=811142 Reported-by: Rolf Offermanns <rolf.offermanns@gmx.net> Tested-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16ath9k: Fix a WARNING on suspend/resume with IBSSMohammed Shafi Shajakhan
commit 2031b4c2b4904f7448ab9e4bc6b9bf16e32709f5 upstream. this patch is dependent on the patch "cfg80211: fix interface combinations" In ath9k currently we have ADHOC interface as a single incompatible interface. when drv_add_interface is called during resume we got to consider number of vifs already present in addition to checking the drivers 'opmode' information about ADHOC. we incorrectly assume an ADHOC interface is already present. Then we may miss some driver specific data for the ADHOC interface after resume. The above mentioned checks can be removed from the driver, as the patch 'cfg80211: fix interface combinations' ensures that if an interface type is not advertised by the driver in any of the interface combinations(via ieee80211_iface_combination) then it shall be treated as a single incompatible interface. Fixes the following warning on suspend/resume with ibss interface. ath: phy0: Cannot create ADHOC interface when other interfaces already exist. WARNING: at net/mac80211/driver-ops.h:12 ieee80211_reconfig+0x1882/0x1ca0 [mac80211]() Hardware name: 2842RK1 wlan2: Failed check-sdata-in-driver check, flags: 0x0 Call Trace: [<c01361b2>] warn_slowpath_common+0x72/0xa0 [<f8aaa7c2>] ? ieee80211_reconfig+0x1882/0x1ca0 [mac80211] [<f8aaa7c2>] ? ieee80211_reconfig+0x1882/0x1ca0 [mac80211] [<c0136283>] warn_slowpath_fmt+0x33/0x40 [<f8aaa7c2>] ieee80211_reconfig+0x1882/0x1ca0 [mac80211] [<c06c1d1a>] ? mutex_lock_nested+0x23a/0x2f0 [<f8a95097>] ieee80211_resume+0x27/0x70 [mac80211] [<fd177edf>] wiphy_resume+0x8f/0xa0 [cfg80211] Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16cifs: when server doesn't set CAP_LARGE_READ_X, cap default rsize at ↵Jeff Layton
MaxBufferSize commit ec01d738a1691dfc85b96b9f796020267a7be577 upstream. When the server doesn't advertise CAP_LARGE_READ_X, then MS-CIFS states that you must cap the size of the read at the client's MaxBufferSize. Unfortunately, testing with many older servers shows that they often can't service a read larger than their own MaxBufferSize. Since we can't assume what the server will do in this situation, we must be conservative here for the default. When the server can't do large reads, then assume that it can't satisfy any read larger than its MaxBufferSize either. Luckily almost all modern servers can do large reads, so this won't affect them. This is really just for older win9x and OS/2 era servers. Also, note that this patch just governs the default rsize. The admin can always override this if he so chooses. Reported-by: David H. Durgee <dhdurgee@acm.org> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steven French <sfrench@w500smf.none> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16cifs: fix parsing of password mount optionSuresh Jayaraman
commit e73f843a3235a19de38359c91586e9eadef12238 upstream. The double delimiter check that allows a comma in the password parsing code is unconditional. We set "tmp_end" to the end of the string and we continue to check for double delimiter. In the case where the password doesn't contain a comma we end up setting tmp_end to NULL and eventually setting "options" to "end". This results in the premature termination of the options string and hence the values of UNCip and UNC are being set to NULL. This results in mount failure with "Connecting to DFS root not implemented yet" error. This error is usually not noticable as we have password as the last option in the superblock mountdata. But when we call expand_dfs_referral() from cifs_mount() and try to compose mount options for the submount, the resulting mountdata will be of the form ",ver=1,user=foo,pass=bar,ip=x.x.x.x,unc=\\server\share" and hence results in the above error. This bug has been seen with older NAS servers running Samba 3.0.24. Fix this by moving the double delimiter check inside the conditional loop. Changes since -v1 - removed the wrong strlen() micro optimization. Signed-off-by: Suresh Jayaraman <sjayaraman@suse.com> Acked-by: Sachin Prabhu <sprabhu@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16rpmsg: make sure inflight messages don't invoke just-removed callbacksOhad Ben-Cohen
commit 15fd943af50dbc5f7f4de33835795c72595f7bf4 upstream. When inbound messages arrive, rpmsg core looks up their associated endpoint (by destination address) and then invokes their callback. We've made sure that endpoints will never be de-allocated after they were found by rpmsg core, but we also need to protect against the (rare) scenario where the rpmsg driver was just removed, and its callback function isn't available anymore. This is achieved by introducing a callback mutex, which must be taken before the callback is invoked, and, obviously, before it is removed. Reported-by: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16rpmsg: avoid premature deallocation of endpointsOhad Ben-Cohen
commit 5a081caa0414b9bbb82c17ffab9d6fe66edbb72f upstream. When an inbound message arrives, the rpmsg core looks up its associated endpoint and invokes the registered callback. If a message arrives while its endpoint is being removed (because the rpmsg driver was removed, or a recovery of a remote processor has kicked in) we must ensure atomicity, i.e.: - Either the ept is removed before it is found or - The ept is found but will not be freed until the callback returns This is achieved by maintaining a per-ept reference count, which, when drops to zero, will trigger deallocation of the ept. With this in hand, it is now forbidden to directly deallocate epts once they have been added to the endpoints idr. Reported-by: Fernando Guzman Lugo <fernando.lugo@ti.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16iommu/tegra: smmu: Fix unsleepable memory allocationHiroshi DOYU
commit 8f53dc724a83a0082184fa27df80c25c7df47340 upstream. allo_pdir() is called in smmu_iommu_domain_init() with spin_lock held. memory allocations in it have to be atomic/unsleepable. Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com> Reported-by: Chris Wright <chrisw@sous-sol.org> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16iommu/amd: Initialize dma_ops for hotplug and sriov devicesJoerg Roedel
commit ac1534a55d1e87d59a21c09c570605933b551480 upstream. When a device is added to the system at runtime the AMD IOMMU driver initializes the necessary data structures to handle translation for it. But it forgets to change the per-device dma_ops to point to the AMD IOMMU driver. So mapping actually never happens and all DMA accesses end in an IO_PAGE_FAULT. Fix this. Reported-by: Stefan Assmann <sassmann@redhat.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16iommu/amd: Fix missing iommu_shutdown initialization in passthrough modeShuah Khan
commit f2f12b6fc032c7b1419fd6db84e2868b5f05a878 upstream. The iommu_shutdown callback is not initialized when the AMD IOMMU driver runs in passthrough mode. Fix that by moving the callback initialization before the check for passthrough mode. Signed-off-by: Shuah Khan <shuah.khan@hp.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16udf: Fortify loading of sparing tableJan Kara
commit 1df2ae31c724e57be9d7ac00d78db8a5dabdd050 upstream. Add sanity checks when loading sparing table from disk to avoid accessing unallocated memory or writing to it. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16udf: Avoid run away loop when partition table length is corruptedJan Kara
commit adee11b2085bee90bd8f4f52123ffb07882d6256 upstream. Check provided length of partition table so that (possibly maliciously) corrupted partition table cannot cause accessing data beyond current buffer. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16udf: Use 'ret' instead of abusing 'i' in udf_load_logicalvol()Jan Kara
commit cb14d340ef1737c24125dd663eff77734a482d47 upstream. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16nilfs2: ensure proper cache clearing for gc-inodesRyusuke Konishi
commit fbb24a3a915f105016f1c828476be11aceac8504 upstream. A gc-inode is a pseudo inode used to buffer the blocks to be moved by garbage collection. Block caches of gc-inodes must be cleared every time a garbage collection function (nilfs_clean_segments) completes. Otherwise, stale blocks buffered in the caches may be wrongly reused in successive calls of the GC function. For user files, this is not a problem because their gc-inodes are distinguished by a checkpoint number as well as an inode number. They never buffer different blocks if either an inode number, a checkpoint number, or a block offset differs. However, gc-inodes of sufile, cpfile and DAT file can store different data for the same block offset. Thus, the nilfs_clean_segments function can move incorrect block for these meta-data files if an old block is cached. I found this is really causing meta-data corruption in nilfs. This fixes the issue by ensuring cache clear of gc-inodes and resolves reported GC problems including checkpoint file corruption, b-tree corruption, and the following warning during GC. nilfs_palloc_freev: entry number 307234 already freed. ... Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Tested-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16staging: r8712u: Add new USB IDsLubomir Schmidt
commit 3026b0e942c65c65c8fc80d391d004228b52b916 upstream. There are two new devices for this driver. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16hwmon: (applesmc) Limit key length in warning messagesHenrik Rydberg
commit ac852edb47b15900886ba2564eeeb13b3b526e3e upstream. Key lookups may call read_smc() with a fixed-length key string, and if the lookup fails, trailing stack content may appear in the kernel log. Fixed with this patch. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16NFC: Prevent multiple buffer overflows in NCIDan Rosenberg
commit 67de956ff5dc1d4f321e16cfbd63f5be3b691b43 upstream. Fix multiple remotely-exploitable stack-based buffer overflows due to the NCI code pulling length fields directly from incoming frames and copying too much data into statically-sized arrays. Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com> Cc: security@kernel.org Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Acked-by: Ilan Elias <ilane@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16NFC: Return from rawsock_release when sk is NULLEric Dumazet
commit 03e934f620101ca2cfc9383bd76172dd3e1f8567 upstream. Sasha Levin reported following panic : [ 2136.383310] BUG: unable to handle kernel NULL pointer dereference at 00000000000003b0 [ 2136.384022] IP: [<ffffffff8114e400>] __lock_acquire+0xc0/0x4b0 [ 2136.384022] PGD 131c4067 PUD 11c0c067 PMD 0 [ 2136.388106] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC [ 2136.388106] CPU 1 [ 2136.388106] Pid: 24855, comm: trinity-child1 Tainted: G W 3.5.0-rc2-sasha-00015-g7b268f7 #374 [ 2136.388106] RIP: 0010:[<ffffffff8114e400>] [<ffffffff8114e400>] __lock_acquire+0xc0/0x4b0 [ 2136.388106] RSP: 0018:ffff8800130b3ca8 EFLAGS: 00010046 [ 2136.388106] RAX: 0000000000000086 RBX: ffff88001186b000 RCX: 0000000000000000 [ 2136.388106] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 2136.388106] RBP: ffff8800130b3d08 R08: 0000000000000001 R09: 0000000000000000 [ 2136.388106] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000002 [ 2136.388106] R13: 00000000000003b0 R14: 0000000000000000 R15: 0000000000000000 [ 2136.388106] FS: 00007fa5b1bd4700(0000) GS:ffff88001b800000(0000) knlGS:0000000000000000 [ 2136.388106] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2136.388106] CR2: 00000000000003b0 CR3: 0000000011d1f000 CR4: 00000000000406e0 [ 2136.388106] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2136.388106] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 2136.388106] Process trinity-child1 (pid: 24855, threadinfo ffff8800130b2000, task ffff88001186b000) [ 2136.388106] Stack: [ 2136.388106] ffff8800130b3cd8 ffffffff81121785 ffffffff81236774 000080d000000001 [ 2136.388106] ffff88001b9d6c00 00000000001d6c00 ffffffff130b3d08 ffff88001186b000 [ 2136.388106] 0000000000000000 0000000000000002 0000000000000000 0000000000000000 [ 2136.388106] Call Trace: [ 2136.388106] [<ffffffff81121785>] ? sched_clock_local+0x25/0x90 [ 2136.388106] [<ffffffff81236774>] ? get_empty_filp+0x74/0x220 [ 2136.388106] [<ffffffff8114e97a>] lock_acquire+0x18a/0x1e0 [ 2136.388106] [<ffffffff836b37df>] ? rawsock_release+0x4f/0xa0 [ 2136.388106] [<ffffffff837c0ef0>] _raw_write_lock_bh+0x40/0x80 [ 2136.388106] [<ffffffff836b37df>] ? rawsock_release+0x4f/0xa0 [ 2136.388106] [<ffffffff836b37df>] rawsock_release+0x4f/0xa0 [ 2136.388106] [<ffffffff8321cfe8>] sock_release+0x18/0x70 [ 2136.388106] [<ffffffff8321d069>] sock_close+0x29/0x30 [ 2136.388106] [<ffffffff81236bca>] __fput+0x11a/0x2c0 [ 2136.388106] [<ffffffff81236d85>] fput+0x15/0x20 [ 2136.388106] [<ffffffff8321de34>] sys_accept4+0x1b4/0x200 [ 2136.388106] [<ffffffff837c165c>] ? _raw_spin_unlock_irq+0x4c/0x80 [ 2136.388106] [<ffffffff837c1669>] ? _raw_spin_unlock_irq+0x59/0x80 [ 2136.388106] [<ffffffff837c2565>] ? sysret_check+0x22/0x5d [ 2136.388106] [<ffffffff8321de8b>] sys_accept+0xb/0x10 [ 2136.388106] [<ffffffff837c2539>] system_call_fastpath+0x16/0x1b [ 2136.388106] Code: ec 04 00 0f 85 ea 03 00 00 be d5 0b 00 00 48 c7 c7 8a c1 40 84 e8 b1 a5 f8 ff 31 c0 e9 d4 03 00 00 66 2e 0f 1f 84 00 00 00 00 00 <49> 81 7d 00 60 73 5e 85 b8 01 00 00 00 44 0f 44 e0 83 fe 01 77 [ 2136.388106] RIP [<ffffffff8114e400>] __lock_acquire+0xc0/0x4b0 [ 2136.388106] RSP <ffff8800130b3ca8> [ 2136.388106] CR2: 00000000000003b0 [ 2136.388106] ---[ end trace 6d450e935ee18982 ]--- [ 2136.388106] Kernel panic - not syncing: Fatal exception in interrupt rawsock_release() should test if sock->sk is NULL before calling sock_orphan()/sock_put() Reported-by: Sasha Levin <levinsasha928@gmail.com> Tested-by: Sasha Levin <levinsasha928@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16powerpc: Fix build of some debug irq codeBenjamin Herrenschmidt
commit 21b2de341270bd7bb7a811027ffe63276d9b3b75 upstream. There was a typo, checking for CONFIG_TRACE_IRQFLAG instead of CONFIG_TRACE_IRQFLAGS causing some useful debug code to not be built This in turns causes a build error on BookE 64-bit due to incorrect semicolons at the end of a couple of macros, so let's fix that too Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16powerpc: More fixes for lazy IRQ vs. idleBenjamin Herrenschmidt
commit be2cf20a5ad31ebb13562c1c866ecc626fbd721e upstream. Looks like we still have issues with pSeries and Cell idle code vs. the lazy irq state. In fact, the reset fixes that went upstream are exposing the problem more by causing BUG_ON() to trigger (which this patch turns into a WARN_ON instead). We need to be careful when using a variant of low power state that has the side effect of turning interrupts back on, to properly set all the SW & lazy state to look as if everything is enabled before we enter the low power state with MSR:EE off as we will return with MSR:EE on. If not, we have a discrepancy of state which can cause things to go very wrong later on. This patch moves the logic into a helper and uses it from the pseries and cell idle code. The power4/970 idle code already got things right (in assembly even !) so I'm not touching it. The power7 "bare metal" idle code is subtly different and correct. Remains PA6T and some hypervisor based Cell platforms which have questionable code in there, but they are mostly dead platforms so I'll fix them when I manage to get final answers from the respective maintainers about how the low power state actually works on them. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16mm: fix slab->page _count corruption when using slubPravin B Shelar
commit abca7c4965845924f65d40e0aa1092bdd895e314 upstream. On arches that do not support this_cpu_cmpxchg_double() slab_lock is used to do atomic cmpxchg() on double word which contains page->_count. The page count can be changed from get_page() or put_page() without taking slab_lock. That corrupts page counter. Fix it by moving page->_count out of cmpxchg_double data. So that slub does no change it while updating slub meta-data in struct page. [akpm@linux-foundation.org: use standard comment layout, tweak comment text] Reported-by: Amey Bhide <abhide@nicira.com> Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16xen/netfront: teardown the device before unregistering it.Ian Campbell
[ Upstream commit 6bc96d047fe32d76ef79f3195c52a542edf7c705 ] Fixes: [ 15.470311] WARNING: at /local/scratch/ianc/devel/kernels/linux/fs/sysfs/file.c:498 sysfs_attr_ns+0x95/0xa0() [ 15.470326] sysfs: kobject eth0 without dirent [ 15.470333] Modules linked in: [ 15.470342] Pid: 12, comm: xenwatch Not tainted 3.4.0-x86_32p-xenU #93 and [ 9.150554] BUG: unable to handle kernel paging request at 2b359000 [ 9.150577] IP: [<c1279561>] linkwatch_do_dev+0x81/0xc0 [ 9.150592] *pdpt = 000000002c3c9027 *pde = 0000000000000000 [ 9.150604] Oops: 0002 [#1] SMP [ 9.150613] Modules linked in: This is http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=675190 Reported-by: George Shuklin <george.shuklin@gmail.com> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Tested-by: William Dauchy <wdauchy@gmail.com> Cc: stable@kernel.org Cc: 675190@bugs.debian.org Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16bridge: Assign rtnl_link_ops to bridge devices created via ioctl (v2)stephen hemminger
[ Upstream commit 149ddd83a92b02c658d6c61f3276eb6500d585e8 ] This ensures that bridges created with brctl(8) or ioctl(2) directly also carry IFLA_LINKINFO when dumped over netlink. This also allows to create a bridge with ioctl(2) and delete it with RTM_DELLINK. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16net: remove skb_orphan_try()Eric Dumazet
[ Upstream commit 62b1a8ab9b3660bb820d8dfe23148ed6cda38574 ] Orphaning skb in dev_hard_start_xmit() makes bonding behavior unfriendly for applications sending big UDP bursts : Once packets pass the bonding device and come to real device, they might hit a full qdisc and be dropped. Without orphaning, the sender is automatically throttled because sk->sk_wmemalloc reaches sk->sk_sndbuf (assuming sk_sndbuf is not too big) We could try to defer the orphaning adding another test in dev_hard_start_xmit(), but all this seems of little gain, now that BQL tends to make packets more likely to be parked in Qdisc queues instead of NIC TX ring, in cases where performance matters. Reverts commits : fc6055a5ba31 net: Introduce skb_orphan_try() 87fd308cfc6b net: skb_tx_hash() fix relative to skb_orphan_try() and removes SKBTX_DRV_NEEDS_SK_REF flag Reported-and-bisected-by: Jean-Michel Hautbois <jhautbois@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Oliver Hartkopp <socketcan@hartkopp.net> Acked-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16bnx2x: fix panic when TX ring is fullEric Dumazet
[ Upstream commit bc14786a100cc6a81cd060e8031ec481241b418c ] There is a off by one error in the minimal number of BD in bnx2x_start_xmit() and bnx2x_tx_int() before stopping/resuming tx queue. A full size GSO packet, with data included in skb->head really needs (MAX_SKB_FRAGS + 4) BDs, because of bnx2x_tx_split() This error triggers if BQL is disabled and heavy TCP transmit traffic occurs. bnx2x_tx_split() definitely can be called, remove a wrong comment. Reported-by: Tomas Hruby <thruby@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Yaniv Rosner <yanivr@broadcom.com> Cc: Merav Sicron <meravs@broadcom.com> Cc: Tom Herbert <therbert@google.com> Cc: Robert Evans <evansr@google.com> Cc: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16bnx2x: fix checksum validationEric Dumazet
[ Upstream commit d6cb3e41386f20fb0777d0b59a2def82c65d37f7 ] bnx2x driver incorrectly sets ip_summed to CHECKSUM_UNNECESSARY on encapsulated segments. TCP stack happily accepts frames with bad checksums, if they are inside a GRE or IPIP encapsulation. Our understanding is that if no IP or L4 csum validation was done by the hardware, we should leave ip_summed as is (CHECKSUM_NONE), since hardware doesn't provide CHECKSUM_COMPLETE support in its cqe. Then, if IP/L4 checksumming was done by the hardware, set CHECKSUM_UNNECESSARY if no error was flagged. Patch based on findings and analysis from Robert Evans Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Eilon Greenstein <eilong@broadcom.com> Cc: Yaniv Rosner <yanivr@broadcom.com> Cc: Merav Sicron <meravs@broadcom.com> Cc: Tom Herbert <therbert@google.com> Cc: Robert Evans <evansr@google.com> Cc: Willem de Bruijn <willemb@google.com> Acked-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16netpoll: fix netpoll_send_udp() bugsEric Dumazet
[ Upstream commit 954fba0274058d27c7c07b5ea07c41b3b7477894 ] Bogdan Hamciuc diagnosed and fixed following bug in netpoll_send_udp() : "skb->len += len;" instead of "skb_put(skb, len);" Meaning that _if_ a network driver needs to call skb_realloc_headroom(), only packet headers would be copied, leaving garbage in the payload. However the skb_realloc_headroom() must be avoided as much as possible since it requires memory and netpoll tries hard to work even if memory is exhausted (using a pool of preallocated skbs) It appears netpoll_send_udp() reserved 16 bytes for the ethernet header, which happens to work for typicall drivers but not all. Right thing is to use LL_RESERVED_SPACE(dev) (And also add dev->needed_tailroom of tailroom) This patch combines both fixes. Many thanks to Bogdan for raising this issue. Reported-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Neil Horman <nhorman@tuxdriver.com> Reviewed-by: Neil Horman <nhorman@tuxdriver.com> Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16bonding: Fix corrupted queue_mappingEric Dumazet
[ Upstream commit 5ee31c6898ea5537fcea160999d60dc63bc0c305 ] In the transmit path of the bonding driver, skb->cb is used to stash the skb->queue_mapping so that the bonding device can set its own queue mapping. This value becomes corrupted since the skb->cb is also used in __dev_xmit_skb. When transmitting through bonding driver, bond_select_queue is called from dev_queue_xmit. In bond_select_queue the original skb->queue_mapping is copied into skb->cb (via bond_queue_mapping) and skb->queue_mapping is overwritten with the bond driver queue. Subsequently in dev_queue_xmit, __dev_xmit_skb is called which writes the packet length into skb->cb, thereby overwriting the stashed queue mappping. In bond_dev_queue_xmit (called from hard_start_xmit), the queue mapping for the skb is set to the stashed value which is now the skb length and hence is an invalid queue for the slave device. If we want to save skb->queue_mapping into skb->cb[], best place is to add a field in struct qdisc_skb_cb, to make sure it wont conflict with other layers (eg : Qdiscc, Infiniband...) This patchs also makes sure (struct qdisc_skb_cb)->data is aligned on 8 bytes : netem qdisc for example assumes it can store an u64 in it, without misalignment penalty. Note : we only have 20 bytes left in (struct qdisc_skb_cb)->data[]. The largest user is CHOKe and it fills it. Based on a previous patch from Tom Herbert. Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Tom Herbert <therbert@google.com> Cc: John Fastabend <john.r.fastabend@intel.com> Cc: Roland Dreier <roland@kernel.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16dummy: fix rcu_sched self-detected stallsEric Dumazet
[ Upstream commit 16b0dc29c1af9df341428f4c49ada4f626258082 ] Trying to "modprobe dummy numdummies=30000" triggers : INFO: rcu_sched self-detected stall on CPU { 8} (t=60000 jiffies) After this splat, RTNL is locked and reboot is needed. We must call cond_resched() to avoid this, even holding RTNL. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16be2net: fix a race in be_xmit()Eric Dumazet
[ Upstream commit cd8f76c0a0c6fce0b2cf23c9bd0123f91453f46d ] As soon as hardware is notified of a transmit, we no longer can assume skb can be dereferenced, as TX completion might have freed the packet. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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