- 24 Mar, 2016 40 commits
-
-
Peter Jones authored
commit ed8b0de5 upstream. "rm -rf" is bricking some peoples' laptops because of variables being used to store non-reinitializable firmware driver data that's required to POST the hardware. These are 100% bugs, and they need to be fixed, but in the mean time it shouldn't be easy to *accidentally* brick machines. We have to have delete working, and picking which variables do and don't work for deletion is quite intractable, so instead make everything immutable by default (except for a whitelist), and make tools that aren't quite so broad-spectrum unset the immutable flag. Signed-off-by:
Peter Jones <pjones@redhat.com> Tested-by:
Lee, Chun-Yi <jlee@suse.com> Acked-by:
Matthew Garrett <mjg59@coreos.com> Signed-off-by:
Matt Fleming <matt@codeblueprint.co.uk> [ luis: backported to 3.16: - use mutex_lock/unlock() instead of inode_lock/unlock() - use root->d_inode instead of d_inode() ] Signed-off-by:
Luis Henriques <luis.henriques@canonical.com>
-
Peter Jones authored
commit 8282f5d9 upstream. All the variables in this list so far are defined to be in the global namespace in the UEFI spec, so this just further ensures we're validating the variables we think we are. Including the guid for entries will become more important in future patches when we decide whether or not to allow deletion of variables based on presence in this list. Signed-off-by:
-
Peter Jones authored
commit 3dcb1f55 upstream. Actually translate from ucs2 to utf8 before doing the test, and then test against our other utf8 data, instead of fudging it. Signed-off-by:
-
Peter Jones authored
commit e0d64e6a upstream. Translate EFI's UCS-2 variable names to UTF-8 instead of just assuming all variable names fit in ASCII. Signed-off-by:
-
Peter Jones authored
commit 73500267 upstream. This adds ucs2_utf8size(), which tells us how big our ucs2 string is in bytes, and ucs2_as_utf8, which translates from ucs2 to utf8.. Signed-off-by:
-
Marcelo Tosatti authored
commit 7cae2bed upstream. 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:
Paolo Bonzini <pbonzini@redhat.com> Cc: Liang Chen <liangchen.linux@gmail.com> Signed-off-by:
-
Jianjian Huo authored
commit 789d21db upstream. Since bch_is_open will iterate linked list bch_cache_sets and uncached_devices, it needs bch_register_lock. Signed-off-by:
Jianjian Huo <samuel.huo@gmail.com> Cc: Kamal Mostafa <kamal@canonical.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Greg Kroah-Hartman authored
In Linus's tree, the iovec code has been reworked massively, but in older kernels the AIO layer should be checking this before passing the request on to other layers. Many thanks to Ben Hawkes of Google Project Zero for pointing out the issue. Reported-by:
Ben Hawkes <hawkes@google.com> Acked-by:
Benjamin LaHaise <bcrl@kvack.org> Tested-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Moritz Muehlenhoff <jmm@inutil.org> Signed-off-by:
-
Vladis Dronov authored
commit 8e20cf2b upstream. The aiptek driver crashes in aiptek_probe() when a specially crafted USB device without endpoints is detected. This fix adds a check that the device has proper configuration expected by the driver. Also an error return value is changed to more matching one in one of the error paths. Reported-by:
Ralf Spenneberg <ralf@spenneberg.net> Signed-off-by:
Vladis Dronov <vdronov@redhat.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Moritz Muehlenhoff <jmm@inutil.org> Signed-off-by:
-
Eryu Guan authored
commit 6ffe77ba upstream. In commit bcff2488 ("ext4: don't read blocks from disk after extents being swapped") bh is not updated correctly in the for loop and wrong data has been written to disk. generic/324 catches this on sub-page block size ext4. Fixes: bcff2488 ("ext4: don't read blocks from disk after extentsbeing swapped") Signed-off-by:
Eryu Guan <guaneryu@gmail.com> Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
-
Bjørn Mork authored
commit 4d06dd53 upstream. usbnet_link_change will call schedule_work and should be avoided if bind is failing. Otherwise we will end up with scheduled work referring to a netdev which has gone away. Instead of making the call conditional, we can just defer it to usbnet_probe, using the driver_info flag made for this purpose. Fixes: 8a34b0ae ("usbnet: cdc_ncm: apply usbnet_link_change") Reported-by:
Andrey Konovalov <andreyknvl@gmail.com> Suggested-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
David S. Miller <davem@davemloft.net> [ luis: backported to 3.16: - cdc_ncm_bind_common() takes only 3 args in 3.16 - adjusted context ] Signed-off-by:
-
Dan Carpenter authored
commit 1d3cd177 upstream. We accidentally return IS_ERR(priv->base) which is 1 instead of PTR_ERR(priv->base) which is the error code. Fixes: 6c821bd9 ('net: Add MOXA ART SoCs ethernet driver') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
-
Florian Westphal authored
commit 5d150a98 upstream. When ipv6_find_hdr is used to find a fragment header (caller specifies target NEXTHDR_FRAGMENT) we erronously return -ENOENT for all fragments with nonzero offset. Before commit 9195bb8e, when target was specified, we did not enter the exthdr walk loop as nexthdr == target so this used to work. Now we do (so we can skip empty route headers). When we then stumble upon a frag with nonzero frag_off we must return -ENOENT ("header not found") only if the caller did not specifically request NEXTHDR_FRAGMENT. This allows nfables exthdr expression to match ipv6 fragments, e.g. via nft add rule ip6 filter input frag frag-off gt 0 Fixes: 9195bb8e ("ipv6: improve ipv6_find_hdr() to skip empty routing headers") Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
-
Benjamin Poirier authored
commit 1837b2e2 upstream. The current reserved_tailroom calculation fails to take hlen and tlen into account. skb: [__hlen__|__data____________|__tlen___|__extra__] ^ ^ head skb_end_offset In this representation, hlen + data + tlen is the size passed to alloc_skb. "extra" is the extra space made available in __alloc_skb because of rounding up by kmalloc. We can reorder the representation like so: [__hlen__|__data____________|__extra__|__tlen___] ^ ^ head skb_end_offset The maximum space available for ip headers and payload without fragmentation is min(mtu, data + extra). Therefore, reserved_tailroom = data + extra + tlen - min(mtu, data + extra) = skb_end_offset - hlen - min(mtu, skb_end_offset - hlen - tlen) = skb_tailroom - min(mtu, skb_tailroom - tlen) ; after skb_reserve(hlen) Compare the second line to the current expression: reserved_tailroom = skb_end_offset - min(mtu, skb_end_offset) and we can see that hlen and tlen are not taken into account. The min() in the third line can be expanded into: if mtu < skb_tailroom - tlen: reserved_tailroom = skb_tailroom - mtu else: reserved_tailroom = tlen Depending on hlen, tlen, mtu and the number of multicast address records, the current code may output skbs that have less tailroom than dev->needed_tailroom or it may output more skbs than needed because not all space available is used. Fixes: 4c672e4b ("ipv6: mld: fix add_grhead skb_over_panic for devs with large MTUs") Signed-off-by:
Benjamin Poirier <bpoirier@suse.com> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
-
Jack Morgenstein authored
commit 6e522422 upstream. The VF administrative mac addresses (stored in the PF driver) are initialized to zero when the PF driver starts up. These addresses may be modified in the PF driver through ndo calls initiated by iproute2 or libvirt. While we allow the PF/host to change the VF admin mac address from zero to a valid unicast mac, we do not allow restoring the VF admin mac to zero. We currently only allow changing this mac to a different unicast mac. This leads to problems when libvirt scripts are used to deal with VF mac addresses, and libvirt attempts to revoke the mac so this host will not use it anymore. Fix this by allowing resetting a VF administrative MAC back to zero. Fixes: 8f7ba3ca ('net/mlx4: Add set VF mac address support') Signed-off-by:
Jack Morgenstein <jackm@dev.mellanox.co.il> Reported-by:
Moshe Levi <moshele@mellanox.com> Signed-off-by:
-
Konstantin Khlebnikov authored
commit 9bdfb3b7 upstream. Currently it's converted into msecs, thus HZ=1000 intact. Signed-off-by:
Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: 740b0f18 ("tcp: switch rtt estimations to usec resolution") Signed-off-by:
-
Alex Deucher authored
commit d74e766e upstream. This reverts commit 39d42750. This caused a regression on some older hardware. bug: https://bugzilla.kernel.org/show_bug.cgi?id=113891Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
-
Radim Krčmář authored
commit 7099e2e1 upstream. 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.") Reported-by:
Jiří Olša <jolsa@redhat.com> Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
-
Paul Mackerras authored
commit ccec4456 upstream. 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. 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:
-
Linus Torvalds authored
commit 256faedc upstream. This reverts commit dbb17a21. It turns out that commit can cause problems for systems with multiple GPUs, and causes X to hang on at least a HP Pavilion dv7 with hybrid graphics. This got noticed originally in 4.4.4, where this patch had already gotten back-ported, but 4.5-rc7 was verified to have the same problem. Alexander Deucher says: "It looks like you have a muxed system so I suspect what's happening is that one of the display is being reported as connected for both the IGP and the dGPU and then the desktop environment gets confused or there some sort problem in the detect functions since the mux is not switched to the dGPU. I don't see an easy fix unless Dave has any ideas. I'd say just revert for now" Reported-by:
Jörg-Volker Peetz <jvpeetz@web.de> Acked-by:
-
Nicholas Bellinger authored
commit 7f54ab5f upstream. 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> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Takashi Iwai authored
commit 15c66570 upstream. 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> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Takashi Iwai authored
commit 8019c0b3 upstream. 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:
-
Takashi Iwai authored
commit d0784829 upstream. "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:
-
Maximilain Schneider authored
commit e9a2d81b upstream. 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> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by:
-
Felix Fietkau authored
commit 7a36b930 upstream. 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. Acked-by:
Avery Pennarun <apenwarr@gmail.com> Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Chris Bainbridge authored
commit f39ea269 upstream. 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") Signed-off-by:
Chris Bainbridge <chris.bainbridge@gmail.com> [reword commit message, use sizeof(*tid_agg_rx)] Signed-off-by:
-
Johannes Berg authored
commit cb150b9d upstream. 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. Signed-off-by:
-
Johannes Berg authored
commit 8bf86273 upstream. 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. Reported-by:
Beniamino Galvani <bgalvani@redhat.com> Signed-off-by:
-
Or Gerlitz authored
commit 11d8d645 upstream. According to IBTA spec v1.3 section 12.7.19, QPs should use GRH when the path returned by the SA has hop-limit > 0. Currently, we do that only for the > 1 case, fix that. Fixes: 6d969a47 ('IB/sa: Add ib_init_ah_from_path()') Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Reviewed-by:
Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by:
Doug Ledford <dledford@redhat.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Geert Uytterhoeven authored
commit b26a719b upstream. The R-Car GPIO driver handles Runtime PM for requested GPIOs only. When using a GPIO purely as an interrupt source, no Runtime PM handling is done, and the GPIO module's clock may not be enabled. To fix this: - Add .irq_request_resources() and .irq_release_resources() callbacks to handle Runtime PM when an interrupt is requested, - Add irq_bus_lock() and sync_unlock() callbacks to handle Runtime PM when e.g. disabling/enabling an interrupt, or configuring the interrupt type. Fixes: d5c3d846 "net: phy: Avoid polling PHY with PHY_IGNORE_INTERRUPTS" Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> [ luis: backported to 3.16: - use gpio_to_priv() instead of gpiochip_get_data() - adjusted context ] Signed-off-by:
-
Richard Weinberger authored
commit e4f6daac upstream. 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. Signed-off-by:
Richard Weinberger <richard@nod.at> Reviewed-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
-
Maciej W. Rozycki authored
commit e723e3f7 upstream. 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> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
-
Simon South authored
commit 02322ac9 upstream. 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> Signed-off-by:
-
Todd E Brandt authored
commit 92f9e179 upstream. 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> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
-
Alex Deucher authored
commit 5e031d9f upstream. 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:
-
Bjørn Mork authored
commit 04fdbc82 upstream. The MC74xx and EM74xx modules use different IDs by default, according to the Lenovo EM7455 driver for Windows. Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
-
Timothy Pearson authored
commit 2d02b8bd upstream. 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> Signed-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
-
Takashi Iwai authored
commit 197b958c upstream. 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> Signed-off-by:
-
Yegor Yefremov authored
commit c0992d0f upstream. Add support for Quectel UC20 and blacklist the QMI interface. Signed-off-by:
Yegor Yefremov <yegorslists@googlemail.com> [johan: amend commit message ] Signed-off-by:
-
