- 22 Mar, 2016 16 commits
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Alex Deucher authored
[ Upstream commit 092c96a8 ] Need to properly handle the max link rate in the dpcd. This prevents some cases where 5.4 Ghz is selected when it shouldn't be. v2: simplify logic, add array bounds check Reviewed-by:
Tom St Denis <tom.stdenis@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
Sasha Levin <sasha.levin@oracle.com>
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Alex Deucher authored
[ Upstream commit 0c3a8840 ] Signed-off-by:
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Radim Krčmář authored
[ Upstream commit 7099e2e1 ] Linux guests on Haswell (and also SandyBridge and Broadwell, at least) would crash if you decided to run a host command that uses PEBS, like perf record -e 'cpu/mem-stores/pp' -a This happens because KVM is using VMX MSR switching to disable PEBS, but SDM [2015-12] 18.4.4.4 Re-configuring PEBS Facilities explains why it isn't safe: When software needs to reconfigure PEBS facilities, it should allow a quiescent period between stopping the prior event counting and setting up a new PEBS event. The quiescent period is to allow any latent residual PEBS records to complete its capture at their previously specified buffer address (provided by IA32_DS_AREA). There might not be a quiescent period after the MSR switch, so a CPU ends up using host's MSR_IA32_DS_AREA to access an area in guest's memory. (Or MSR switching is just buggy on some models.) The guest can learn something about the host this way: If the guest doesn't map address pointed by MSR_IA32_DS_AREA, it results in #PF where we leak host's MSR_IA32_DS_AREA through CR2. After that, a malicious guest can map and configure memory where MSR_IA32_DS_AREA is pointing and can therefore get an output from host's tracing. This is not a critical leak as the host must initiate with PEBS tracing and I have not been able to get a record from more than one instruction before vmentry in vmx_vcpu_run() (that place has most registers already overwritten with guest's). We could disable PEBS just few instructions before vmentry, but disabling it earlier shouldn't affect host tracing too much. We also don't need to switch MSR_IA32_PEBS_ENABLE on VMENTRY, but that optimization isn't worth its code, IMO. (If you are implementing PEBS for guests, be sure to handle the case where both host and guest enable PEBS, because this patch doesn't.) Fixes: 26a4f3c0 ("perf/x86: disable PEBS on a guest entry.") Cc: <stable@vger.kernel.org> Reported-by:
Jiří Olša <jolsa@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Al Viro authored
[ Upstream commit f9381284 ] d_instantiate(new_dentry, old_inode) is absolutely wrong thing to do - it will oops if new_dentry used to be positive, for starters. What we need is d_invalidate() the target and be done with that. Cc: stable@vger.kernel.org # v3.18+ Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Al Viro authored
[ Upstream commit 803c0012 ] Failing to allocate an inode for child means that cache for *parent* is incompletely populated. So it's parent directory inode ('dir') that needs NCPI_DIR_CACHE flag removed, *not* the child inode ('inode', which is what we'd failed to allocate in the first place). Fucked-up-in: commit 5e993e25 ("ncpfs: get rid of d_validate() nonsense") Fucked-up-by:
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Paul Mackerras authored
[ Upstream commit ccec4456 ] Thomas Huth discovered that a guest could cause a hard hang of a host CPU by setting the Instruction Authority Mask Register (IAMR) to a suitable value. It turns out that this is because when the code was added to context-switch the new special-purpose registers (SPRs) that were added in POWER8, we forgot to add code to ensure that they were restored to a sane value on guest exit. This adds code to set those registers where a bad value could compromise the execution of the host kernel to a suitable neutral value on guest exit. Cc: stable@vger.kernel.org # v3.14+ Fixes: b005255eReported-by:
Thomas Huth <thuth@redhat.com> Reviewed-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Mugunthan V N authored
[ Upstream commit 0f514e69 ] Errata id: i877 Description: ------------ The RGMII 1000 Mbps Transmit timing is based on the output clock (rgmiin_txc) being driven relative to the rising edge of an internal clock and the output control/data (rgmiin_txctl/txd) being driven relative to the falling edge of an internal clock source. If the internal clock source is allowed to be static low (i.e., disabled) for an extended period of time then when the clock is actually enabled the timing delta between the rising edge and falling edge can change over the lifetime of the device. This can result in the device switching characteristics degrading over time, and eventually failing to meet the Data Manual Delay Time/Skew specs. To maintain RGMII 1000 Mbps IO Timings, SW should minimize the duration that the Ethernet internal clock source is disabled. Note that the device reset state for the Ethernet clock is "disabled". Other RGMII modes (10 Mbps, 100Mbps) are not affected Workaround: ----------- If the SoC Ethernet interface(s) are used in RGMII mode at 1000 Mbps, SW should minimize the time the Ethernet internal clock source is disabled to a maximum of 200 hours in a device life cycle. This is done by enabling the clock as early as possible in IPL (QNX) or SPL/u-boot (Linux/Android) by setting the register CM_GMAC_CLKSTCTRL[1:0]CLKTRCTRL = 0x2:SW_WKUP. So, do not allow to gate the cpsw clocks using ti,no-idle property in cpsw node assuming 1000 Mbps is being used all the time. If someone does not need 1000 Mbps and wants to gate clocks to cpsw, this property needs to be deleted in their respective board files. Signed-off-by:
Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by:
Lokesh Vutla <lokeshvutla@ti.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Paul Walmsley <paul@pwsan.com> Signed-off-by:
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Lokesh Vutla authored
[ Upstream commit 6327a31a ] commit 2e18f5a1 upstream. Introduce a dt property, ti,no-idle, that prevents an IP to idle at any point. This is to handle Errata i877, which tells that GMAC clocks cannot be disabled. Acked-by:
Roger Quadros <rogerq@ti.com> Tested-by:
Sekhar Nori <nsekhar@ti.com> Signed-off-by:
Dave Gerlach <d-gerlach@ti.com> Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Peter Ujfalusi authored
[ Upstream commit c12ba8ce ] Some module needs more than one functional clock in order to be accessible, like the McASPs found in DRA7xx family. This flag will indicate that the opt_clks need to be handled at the same time as the main_clk for the given hwmod, ensuring that all needed clocks are enabled before we try to access the module's address space. Signed-off-by:
Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
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Nicholas Bellinger authored
[ Upstream commit 7f54ab5f ] This patch fixes a recent ABORT_TASK regression associated with commit febe562c, where a left-over target_put_sess_cmd() would still be called when __target_check_io_state() detected a command has already been completed, and explicit ABORT must be avoided. Note commit febe562c dropped the local kref_get_unless_zero() check in core_tmr_abort_task(), but did not drop this extra corresponding target_put_sess_cmd() in the failure path. So go ahead and drop this now bogus target_put_sess_cmd(), and avoid this potential use-after-free. Reported-by:
Dan Lane <dracodan@gmail.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Himanshu Madhani <himanshu.madhani@qlogic.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Andy Grover <agrover@redhat.com> Cc: Mike Christie <mchristi@redhat.com> Cc: stable@vger.kernel.org # 3.14+ Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
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Konstantin Khlebnikov authored
[ Upstream commit b81de061 ] Overlayfs must update uid/gid after chown, otherwise functions like inode_owner_or_capable() will check user against stale uid. Catched by xfstests generic/087, it chowns file and calls utimes. Signed-off-by:
Konstantin Khlebnikov <koct9i@gmail.com> Signed-off-by:
Miklos Szeredi <miklos@szeredi.hu> Cc: <stable@vger.kernel.org> Signed-off-by:
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Konstantin Khlebnikov authored
[ Upstream commit 45d11738 ] After rename file dentry still holds reference to lower dentry from previous location. This doesn't matter for data access because data comes from upper dentry. But this stale lower dentry taints dentry at new location and turns it into non-pure upper. Such file leaves visible whiteout entry after remove in directory which shouldn't have whiteouts at all. Overlayfs already tracks pureness of file location in oe->opaque. This patch just uses that for detecting actual path type. Comment from Vivek Goyal's patch: Here are the details of the problem. Do following. $ mkdir upper lower work merged upper/dir/ $ touch lower/test $ sudo mount -t overlay overlay -olowerdir=lower,upperdir=upper,workdir= work merged $ mv merged/test merged/dir/ $ rm merged/dir/test $ ls -l merged/dir/ /usr/bin/ls: cannot access merged/dir/test: No such file or directory total 0 c????????? ? ? ? ? ? test Basic problem seems to be that once a file has been unlinked, a whiteout has been left behind which was not needed and hence it becomes visible. Whiteout is visible because parent dir is of not type MERGE, hence od->is_real is set during ovl_dir_open(). And that means ovl_iterate() passes on iterate handling directly to underlying fs. Underlying fs does not know/filter whiteouts so it becomes visible to user. Why did we leave a whiteout to begin with when we should not have. ovl_do_remove() checks for OVL_TYPE_PURE_UPPER() and does not leave whiteout if file is pure upper. In this case file is not found to be pure upper hence whiteout is left. So why file was not PURE_UPPER in this case? I think because dentry is still carrying some leftover state which was valid before rename. For example, od->numlower was set to 1 as it was a lower file. After rename, this state is not valid anymore as there is no such file in lower. Signed-off-by:
Viktor Stanchev <me@viktorstanchev.com> Suggested-by:
Vivek Goyal <vgoyal@redhat.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=109611Acked-by:
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Rui Wang authored
[ Upstream commit ce9113bb ] ovl_remove_upper() should do d_drop() only after it successfully removes the dir, otherwise a subsequent getcwd() system call will fail, breaking userspace programs. This is to fix: https://bugzilla.kernel.org/show_bug.cgi?id=110491Signed-off-by:
Rui Wang <rui.y.wang@intel.com> Reviewed-by:
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Jouni Malinen authored
[ Upstream commit 1ec7bae8 ] Public Action frames use special rules for how the BSSID field (Address 3) is set. A wildcard BSSID is used in cases where the transmitter and recipient are not members of the same BSS. As such, we need to accept Public Action frames with wildcard BSSID. Commit db8e1732 ("mac80211: ignore frames between TDLS peers when operating as AP") added a rule that drops Action frames to TDLS-peers based on an Action frame having different DA (Address 1) and BSSID (Address 3) values. This is not correct since it misses the possibility of BSSID being a wildcard BSSID in which case the Address 1 would not necessarily match. Fix this by allowing mac80211 to accept wildcard BSSID in an Action frame when in AP mode. Fixes: db8e1732 ("mac80211: ignore frames between TDLS peers when operating as AP") Cc: stable@vger.kernel.org Signed-off-by:
Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Johannes Berg authored
[ Upstream commit 9acc54be ] Just like for CCMP we need to check that for GCMP the fragments have PNs that increment by one; the spec was updated to fix this security issue and now has the following text: The receiver shall discard MSDUs and MMPDUs whose constituent MPDU PN values are not incrementing in steps of 1. Adapt the code for CCMP to work for GCMP as well, luckily the relevant fields already alias each other so no code duplication is needed (just check the aliasing with BUILD_BUG_ON.) Cc: stable@vger.kernel.org Signed-off-by:
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Takashi Iwai authored
[ Upstream commit 15c66570 ] The firmware ctls like "DSP1 Firmware" in wm_adsp codec driver are enum, while the current driver accesses wrongly via value.integer.value[]. They have to be via value.enumerated.item[] instead. Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org Signed-off-by:
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- 18 Mar, 2016 11 commits
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Takashi Iwai authored
[ Upstream commit 8019c0b3 ] The DRC Mode like "AIF1DRC1 Mode" and EQ Mode like "AIF1.1 EQ Mode" in wm8994 codec driver are enum ctls, while the current driver accesses wrongly via value.integer.value[]. They have to be via value.enumerated.item[] instead. Signed-off-by:
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Takashi Iwai authored
[ Upstream commit d0784829 ] "MBC Mode", "VSS Mode", "VSS HPF Mode" and "Enhanced EQ Mode" ctls in wm8958 codec driver are enum, while the current driver accesses wrongly via value.integer.value[]. They have to be via value.enumerated.item[] instead. Signed-off-by:
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Takashi Iwai authored
[ Upstream commit 741338f9 ] snd_soc_dapm_dai_link_get() and _put() access the associated ctl values as value.integer.value[]. However, this is an enum ctl, and it has to be accessed via value.enumerated.item[]. The former is long while the latter is unsigned int, so they don't align. Fixes: c6615082 ('ASoC: dapm: add code to configure dai link parameters') Cc: <stable@vger.kernel.org> Signed-off-by:
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Maximilain Schneider authored
[ Upstream commit e9a2d81b ] gs_destroy_candev() erroneously calls kfree() on a struct gs_can *, which is allocated through alloc_candev() and should instead be freed using free_candev() alone. The inappropriate use of kfree() causes the kernel to hang when gs_destroy_candev() is called. Only the struct gs_usb * which is allocated through kzalloc() should be freed using kfree() when the device is disconnected. Signed-off-by:
Maximilian Schneider <max@schneidersoft.net> Cc: linux-stable <stable@vger.kernel.org> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by:
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Felix Fietkau authored
[ Upstream commit 7a36b930 ] The value 5000 was put here with the addition of the timeout field to ieee80211_start_tx_ba_session. It was originally added in mac80211 to save resources for drivers like iwlwifi, which only supports a limited number of concurrent aggregation sessions. Since iwlwifi does not use minstrel_ht and other drivers don't need this, 0 is a better default - especially since there have been recent reports of aggregation setup related issues reproduced with ath9k. This should improve stability without causing any adverse effects. Cc: stable@vger.kernel.org Acked-by:
Avery Pennarun <apenwarr@gmail.com> Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
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Charles Keepax authored
[ Upstream commit 316fa9e0 ] Lockdep warns of a potential lock inversion, i2s->lock is held numerous times whilst we are under the substream lock (snd_pcm_stream_lock). If we use the IRQ unsafe spin lock calls, you can also end up locking snd_pcm_stream_lock whilst under i2s->lock (if an IRQ happens whilst we are holding i2s->lock). This could result in deadlock. [ 18.147001] CPU0 CPU1 [ 18.151509] ---- ---- [ 18.156022] lock(&(&pri_dai->spinlock)->rlock); [ 18.160701] local_irq_disable(); [ 18.166622] lock(&(&substream->self_group.lock)->rlock); [ 18.174595] lock(&(&pri_dai->spinlock)->rlock); [ 18.181806] <Interrupt> [ 18.184408] lock(&(&substream->self_group.lock)->rlock); [ 18.190045] [ 18.190045] *** DEADLOCK *** This patch changes to using the irq safe spinlock calls, to avoid this issue. Fixes: ce8bcdbb ("ASoC: samsung: i2s: Protect more registers with a spinlock") Signed-off-by:
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Tested-by:
Anand Moon <linux.amoon@gmail.com> Signed-off-by:
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Liad Kaufman authored
[ Upstream commit fb896c44 ] Until this patch, when TXing non-sta the pending_frames counter wasn't increased, but it WAS decreased in iwl_mvm_rx_tx_cmd_single(), what makes it negative in certain conditions. This in turn caused much trouble when we need to remove the station since we won't be waiting forever until pending_frames gets 0. In certain cases, we were exhausting the station table even in BSS mode, because we had a lot of stale stations. Increase the counter also in iwl_mvm_tx_skb_non_sta() after a successful TX to avoid this outcome. CC: <stable@vger.kernel.org> [3.18+] Signed-off-by:
Liad Kaufman <liad.kaufman@intel.com> Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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Sven Eckelmann authored
[ Upstream commit 212c5a5e ] The change from cur_tp to the function minstrel_get_tp_avg/minstrel_ht_get_tp_avg changed the unit used for the current throughput. For example in minstrel_ht the correct conversion between them would be: mrs->cur_tp / 10 == minstrel_ht_get_tp_avg(..). This factor 10 must also be included in the calculation of minstrel_get_expected_throughput and minstrel_ht_get_expected_throughput to return values with the unit [Kbps] instead of [10Kbps]. Otherwise routing algorithms like B.A.T.M.A.N. V will make incorrect decision based on these values. Its kernel based implementation expects expected_throughput always to have the unit [Kbps] and not sometimes [10Kbps] and sometimes [Kbps]. The same requirement has iw or olsrdv2's nl80211 based statistics module which retrieve the same data via NL80211_STA_INFO_TX_BITRATE. Cc: stable@vger.kernel.org Fixes: 6a27b2c4 ("mac80211: restructure per-rate throughput calculation into function") Signed-off-by:
Sven Eckelmann <sven@open-mesh.com> Signed-off-by:
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Chris Bainbridge authored
[ Upstream commit f39ea269 ] Use kzalloc instead of kmalloc for struct tid_ampdu_rx to initialize the "removed" field (all others are initialized manually). That fixes: UBSAN: Undefined behaviour in net/mac80211/rx.c:932:29 load of value 2 is not a valid value for type '_Bool' CPU: 3 PID: 1134 Comm: kworker/u16:7 Not tainted 4.5.0-rc1+ #265 Workqueue: phy0 rt2x00usb_work_rxdone 0000000000000004 ffff880254a7ba50 ffffffff8181d866 0000000000000007 ffff880254a7ba78 ffff880254a7ba68 ffffffff8188422d ffffffff8379b500 ffff880254a7bab8 ffffffff81884747 0000000000000202 0000000348620032 Call Trace: [<ffffffff8181d866>] dump_stack+0x45/0x5f [<ffffffff8188422d>] ubsan_epilogue+0xd/0x40 [<ffffffff81884747>] __ubsan_handle_load_invalid_value+0x67/0x70 [<ffffffff82227b4d>] ieee80211_sta_reorder_release.isra.16+0x5ed/0x730 [<ffffffff8222ca14>] ieee80211_prepare_and_rx_handle+0xd04/0x1c00 [<ffffffff8222db03>] __ieee80211_rx_handle_packet+0x1f3/0x750 [<ffffffff8222e4a7>] ieee80211_rx_napi+0x447/0x990 While at it, convert to use sizeof(*tid_agg_rx) instead. Fixes: 788211d8 ("mac80211: fix RX A-MPDU session reorder timer deletion") Cc: stable@vger.kernel.org Signed-off-by:
Chris Bainbridge <chris.bainbridge@gmail.com> [reword commit message, use sizeof(*tid_agg_rx)] Signed-off-by:
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Johannes Berg authored
[ Upstream commit cb150b9d ] Since cfg80211 frequently takes actions from its netdev notifier call, wireless extensions messages could still be ordered badly since the wext netdev notifier, since wext is built into the kernel, runs before the cfg80211 netdev notifier. For example, the following can happen: 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff 5: wlan1: <BROADCAST,MULTICAST,UP> link/ether when setting the interface down causes the wext message. To also fix this, export the wireless_nlevent_flush() function and also call it from the cfg80211 notifier. Cc: stable@vger.kernel.org Signed-off-by:
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Johannes Berg authored
[ Upstream commit 8bf86273 ] Beniamino reported that he was getting an RTM_NEWLINK message for a given interface, after the RTM_DELLINK for it. It turns out that the message is a wireless extensions message, which was sent because the interface had been connected and disconnection while it was deleted caused a wext message. For its netlink messages, wext uses RTM_NEWLINK, but the message is without all the regular rtnetlink attributes, so "ip monitor link" prints just rudimentary information: 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff Deleted 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff 5: wlan1: <BROADCAST,MULTICAST,UP> link/ether (from my hwsim reproduction) This can cause userspace to get confused since it doesn't expect an RTM_NEWLINK message after RTM_DELLINK. The reason for this is that wext schedules a worker to send out the messages, and the scheduling delay can cause the messages to get out to userspace in different order. To fix this, have wext register a netdevice notifier and flush out any pending messages when netdevice state changes. This fixes any ordering whenever the original message wasn't sent by a notifier itself. Cc: stable@vger.kernel.org Reported-by:
Beniamino Galvani <bgalvani@redhat.com> Signed-off-by:
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- 17 Mar, 2016 1 commit
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Sasha Levin authored
Signed-off-by:
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- 14 Mar, 2016 4 commits
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Hannes Frederic Sowa authored
[ Upstream commit 9ef2e965 ] This is a clone of commit 2ab95749 ("ip_forward: Drop frames with attached skb->sk") for ipv6. This commit has exactly the same reasons as the above mentioned commit, namely to prevent panics during netfilter reload or a misconfigured stack. Signed-off-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Marcelo Tosatti authored
[ Upstream commit 7cae2bed ] As reported at https://bugs.launchpad.net/qemu/+bug/1494350, it is possible to have vcpu->arch.st.last_steal initialized from a thread other than vcpu thread, say the iothread, via KVM_SET_MSRS. Which can cause an overflow later (when subtracting from vcpu threads sched_info.run_delay). To avoid that, move steal time accumulation to vcpu entry time, before copying steal time data to guest. Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com> Reviewed-by:
David Matlack <dmatlack@google.com> Signed-off-by:
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Richard Weinberger authored
[ Upstream commit e4f6daac ] ubi_start_leb_change() allocates too few bytes. ubi_more_leb_change_data() will write up to req->upd_bytes + ubi->min_io_size bytes. Cc: stable@vger.kernel.org Signed-off-by:
Richard Weinberger <richard@nod.at> Reviewed-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
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Maciej W. Rozycki authored
[ Upstream commit e723e3f7 ] Avoid sending a partially initialised `siginfo_t' structure along SIGFPE signals issued from `do_ov' and `do_trap_or_bp', leading to information leaking from the kernel stack. Signed-off-by:
Maciej W. Rozycki <macro@imgtec.com> Cc: stable@vger.kernel.org Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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- 09 Mar, 2016 8 commits
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Simon South authored
[ Upstream commit 02322ac9 ] This patch applies the microphone-related fix created for the Acer Aspire E1-572 to the E1-472 as well, as it uses the same Realtek ALC282 CODEC and demonstrates the same issues. This patch allows an external, headset microphone to be used and limits the gain on the (quite noisy) internal microphone. Signed-off-by:
Simon South <simon@simonsouth.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Todd E Brandt authored
[ Upstream commit 92f9e179 ] Pause/unpause graph tracing around do_suspend_lowlevel as it has inconsistent call/return info after it jumps to the wakeup vector. The graph trace buffer will otherwise become misaligned and may eventually crash and hang on suspend. To reproduce the issue and test the fix: Run a function_graph trace over suspend/resume and set the graph function to suspend_devices_and_enter. This consistently hangs the system without this fix. Signed-off-by:
Todd Brandt <todd.e.brandt@linux.intel.com> Cc: All applicable <stable@vger.kernel.org> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Alex Deucher authored
[ Upstream commit 5e031d9f ] On CI, we need to see if the number of crtcs changes to determine whether or not we need to upload the mclk table again. In practice we don't currently upload the mclk table again after the initial load. The only reason you would would be to add new states, e.g., for arbitrary mclk setting which is not currently supported. Acked-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
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Bjørn Mork authored
[ Upstream commit 04fdbc82 ] The MC74xx and EM74xx modules use different IDs by default, according to the Lenovo EM7455 driver for Windows. Cc: <stable@vger.kernel.org> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Timothy Pearson authored
[ Upstream commit 2d02b8bd ] During DRAM initialization on certain ASpeed devices, an incorrect bit (bit 10) was checked in the "SDRAM Bus Width Status" register to determine DRAM width. Query bit 6 instead in accordance with the Aspeed AST2050 datasheet v1.05. Signed-off-by:
Timothy Pearson <tpearson@raptorengineeringinc.com> Cc: stable@vger.kernel.org Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Helge Deller authored
[ Upstream commit 98e8b6c9 ] Mike Frysinger reported that his ptrace testcase showed strange behaviour on parisc: It was not possible to avoid a syscall and the return value of a syscall couldn't be changed. To modify a syscall number, we were missing to save the new syscall number to gr20 which is then picked up later in assembly again. The effect that the return value couldn't be changed is a side-effect of another bug in the assembly code. When a process is ptraced, userspace expects each syscall to report entrance and exit of a syscall. If a syscall number was given which doesn't exist, we jumped to the normal syscall exit code instead of informing userspace that the (non-existant) syscall exits. This unexpected behaviour confuses userspace and thus the bug was misinterpreted as if we can't change the return value. This patch fixes both problems and was tested on 64bit kernel with 32bit userspace. Signed-off-by:
Helge Deller <deller@gmx.de> Cc: Mike Frysinger <vapier@gentoo.org> Cc: stable@vger.kernel.org # v4.0+ Tested-by:
Mike Frysinger <vapier@gentoo.org> Signed-off-by:
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Takashi Iwai authored
[ Upstream commit 197b958c ] The OSS sequencer client tries to drain the pending events at releasing. Unfortunately, as spotted by syzkaller fuzzer, this may lead to an unkillable process state when the event has been queued at the far future. Since the process being released can't be signaled any longer, it remains and waits for the echo-back event in that far future. Back to history, the draining feature was implemented at the time we misinterpreted POSIX definition for blocking file operation. Actually, such a behavior is superfluous at release, and we should just release the device as is instead of keeping it up forever. This patch just removes the draining call that may block the release for too long time unexpectedly. BugLink: http://lkml.kernel.org/r/CACT4Y+Y4kD-aBGj37rf-xBw9bH3GMU6P+MYg4W1e-s-paVD2pg@mail.gmail.comReported-by:
Dmitry Vyukov <dvyukov@google.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Dennis Kadioglu authored
[ Upstream commit 17e2df46 ] Plantronics DA45 does not support reading the sample rate which leads to many lines of "cannot get freq at ep 0x4" and "cannot get freq at ep 0x84". This patch adds the USB ID of the DA45 to quirks.c and avoids those error messages. Signed-off-by:
Dennis Kadioglu <denk@post.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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