- 16 Jan, 2019 40 commits
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 122d6a34 ] We should only see devices with interrupt endpoints. Ignore any other endpoints that we find, so we don't send try to send them interrupt URBs and trigger a WARN down in the USB stack. Reported-by:
Andrey Konovalov <andreyknvl@google.com> Tested-by:
Cameron Gutman <aicommander@gmail.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Juerg Haefliger <juergh@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit f5308d1b ] The PowerA gamepad initialization quirk worked with the PowerA wired gamepad I had around (0x24c6:0x543a), but a user reported [0] that it didn't work for him, even though our gamepads shared the same vendor and product IDs. When I initially implemented the PowerA quirk, I wanted to avoid actually triggering the rumble action during init. My tests showed that my gamepad would work correctly even if it received a rumble of 0 intensity, so that's what I went with. Unfortunately, this apparently isn't true for all models (perhaps a firmware difference?). This non-working gamepad seems to require the real magic rumble packet that the Microsoft driver sends, which actually vibrates the gamepad. To counteract this effect, I still send the old zero-rumble PowerA quirk packet which cancels the rumble effect before the motors can spin up enough to vibrate. [0]: https://github.com/paroj/xpad/issues/48#issuecomment-313904867Reported-by:
Kyle Beauchamp <kyleabeauchamp@gmail.com> Tested-by:
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Arvind Yadav authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 94aef061 ] usb_device_id are not supposed to change at runtime. All functions working with usb_device_id provided by <linux/usb.h> work with const usb_device_id. So mark the non-const structs as const. Signed-off-by:
Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by:
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Benjamin Valentin authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit be19788c ] XBCD [0][1] is an OpenSource driver for Xbox controllers on Windows. Later it also started supporting Xbox360 controllers (presumably before the official Windows driver was released). It contains a couple device IDs unknown to the Linux driver, so I extracted those from xbcd.inf and added them to our list. It has a special type for Wheels and I have the feeling they might need some extra handling. They all have 'Wheel' in their name, so that information is available for future improvements. [0] https://www.s-config.com/xbcd-original-xbox-controllers-win10/ [1] http://www.redcl0ud.com/xbcd.htmlReviewed-by:
Benjamin Valentin <benpicco@googlemail.com> Signed-off-by:
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Benjamin Valentin authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit c225370e ] 360Controller [0] is an OpenSource driver for Xbox/Xbox360/XboxOne controllers on macOS. It contains a couple device IDs unknown to the Linux driver, so I wrote a small Python script [1] to extract them and feed them into my previous script [2] to compare them with the IDs known to Linux. For most devices, this information is not really needed as xpad is able to automatically detect the type of an unknown Xbox Controller at run-time. I've therefore stripped all the generic/vague entries. I've excluded the Logitech G920, it's handled by a HID driver already. I've also excluded the Scene It! Big Button IR, it's handled by an out-of-tree driver. [3] [0] https://github.com/360Controller/360Controller [1] http://codepad.org/v9GyLKMq [2] http://codepad.org/qh7jclpD [3] https://github.com/micolous/xbox360bbReviewed-by:
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Benjamin Valentin authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 4706aa07 ] Add USB IDs for two more Xbox 360 controllers. I found them in the pull requests for the xboxdrv userspace driver, which seems abandoned. Thanks to psychogony and mkaito for reporting the IDs there! Signed-off-by:
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Benjamin Valentin authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 44bc7225 ] The userspace xboxdrv driver [0] contains some USB IDs unknown to the kernel driver. I have created a simple script [1] to extract the missing devices and add them to xpad. A quick google search confirmed that all the new devices called Fightstick/pad are Arcade-type devices [2] where the MAP_TRIGGERS_TO_BUTTONS option should apply. There are some similar devices in the existing device table where this flag is not set, but I did refrain from changing those. [0] https://github.com/xboxdrv/xboxdrv/blob/stable/src/xpad_device.cpp [1] http://codepad.org/CHV98BNH [2] https://www.google.com/search?q=SFxT+Fightstick+Pro&tbm=ischSigned-off-by:
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Benjamin Valentin authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 873cb582 ] Some entries in the table of supported devices are out of order. To not create a mess when adding new ones using a script, sort them first. Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 81093c98 ] There are several quirky Xbox One pads that depend on initialization packets that the Microsoft pads don't require. To deal with these, I've added a mechanism for issuing device-specific initialization packets using a VID/PID-based quirks list. For the initial set of init quirks, I have added quirk handling from Valve's Steam Link xpad driver[0] and the 360Controller project[1] for macOS to enable some new pads to work properly. This should enable full functionality on the following quirky pads: 0x0e6f:0x0165 - Titanfall 2 gamepad (previously fully non-functional) 0x0f0d:0x0067 - Hori Horipad (analog sticks previously non-functional) 0x24c6:0x541a - PowerA Xbox One pad (previously fully non-functional) 0x24c6:0x542a - PowerA Xbox One pad (previously fully non-functional) 0x24c6:0x543a - PowerA Xbox One pad (previously fully non-functional) [0]: https://github.com/ValveSoftware/steamlink-sdk/blob/master/kernel/drivers/input/joystick/xpad.c [1]: https://github.com/360Controller/360ControllerSigned-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit a1fbf5bb ] Set the LED_CORE_SUSPENDRESUME flag on our LED device so the LED state will be automatically restored by LED core on resume. Since Xbox One pads stop flashing only when reinitialized, we'll send them the initialization packet so they calm down too. Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 57b8443d ] The Xbox One S requires an ack to its mode button report, otherwise it continuously retransmits the report. This makes the mode button appear to be stuck down after it is pressed for the first time. Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit c01b5e74 ] The order of endpoints is well defined on official Xbox pads, but we have found at least one 3rd-party pad that doesn't follow the standard ("Titanfall 2 Xbox One controller" 0e6f:0165). Fortunately, we get lucky with this specific pad because it uses endpoint addresses that differ only by direction. We know that there are other pads out where this is not true, so let's go ahead and fix this. Signed-off-by:
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Pavel Rojtberg authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit a8c34e27 ] Replace first goto with simple returns as we really are just returning one error code. Signed-off-by:
Pavel Rojtberg <rojtberg@gmail.com> Signed-off-by:
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Daniel Tobias authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 4f88476c ] xbox one was the only device that has a *_process_buttons routine. Signed-off-by:
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Daniel Tobias authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit c02fc1d9 ] Signed-off-by:
Daniel Tobias <dan.g.tob@gmail.com> Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit ae3b4469 ] Unlike previous Xbox pads, the Xbox One pad doesn't have "sticky" rumble packets. The duration is encoded into the command and expiration is handled by the pad firmware. ff-memless needs pseudo-sticky behavior for rumble effects to behave properly for long duration effects. We already specify the maximum rumble on duration in the command packets, but it's still only good for about 2.5 seconds of rumble. This is easily reproducible running fftest's sine vibration test. It turns out there's a repeat count encoded in the rumble command. We can abuse that to get the pseudo-sticky behavior needed for rumble to behave as expected for effects with long duration. By my math, this change should allow a single ff_effect to rumble for 10 minutes straight, which should be more than enough for most needs. Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 599b8c09 ] This is the new gamepad that ships with the Xbox One S which includes Bluetooth functionality. Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit f712a5a0 ] When the USB wireless adapter is suspended, the controllers lose their connection. This causes them to start flashing their LED rings and searching for the wireless adapter again, wasting the controller's battery power. Instead, we will tell the controllers to power down when we suspend. This mirrors the behavior of the controllers when connected to the console itself and how the official Xbox One wireless adapter behaves on Windows. Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 540c2608 ] Xbox One controllers that shipped with or were upgraded to the 2015 firmware discard the current rumble packets we send. This patch changes the Xbox One rumble packet to a form that both the newer and older firmware will accept. It is based on changes made to support newer Xbox One controllers in the SteamOS brewmaster-4.1 kernel branch. Signed-off-by:
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Pavel Rojtberg authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 6f49a398 ] added the according id and incresed XPAD_PKT_LEN to 64 as the elite controller sends at least 33 byte messages [1]. Verified to be working by [2]. [1]: https://franticrain.github.io/sniffs/XboxOneSniff.html [2]: https://github.com/paroj/xpad/issues/23Signed-off-by:
Pierre-Loup A. Griffais <eduke32@plagman.net> Signed-off-by:
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Pavel Rojtberg authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 6538c3b2 ] Signed-off-by:
Thomas Debesse <dev@illwieckz.net> Signed-off-by:
aronschatz <aronschatz@aselabs.com> Signed-off-by:
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Cameron Gutman authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 1ff5fa3c ] After initially connecting a wired Xbox 360 controller or sending it a command to change LEDs, a status/response packet is interpreted as controller input. This causes the state of buttons represented in byte 2 of the controller data packet to be incorrect until the next valid input packet. Wireless Xbox 360 controllers are not affected. Writing a new value to the LED device while holding the Start button and running jstest is sufficient to reproduce this bug. An event will come through with the Start button released. Xboxdrv also won't attempt to read controller input from a packet where byte 0 is non-zero. It also checks that byte 1 is 0x14, but that value differs between wired and wireless controllers and this code is shared by both. I think just checking byte 0 is enough to eliminate unwanted packets. The following are some examples of 3-byte status packets I saw: 01 03 02 02 03 00 03 03 03 08 03 00 Signed-off-by:
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Silvan Jegen authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit d63b0f0c ] This adds the VID/PID combination for the Xbox One version of the Mad Catz FightStick TE 2. The functionality that this provides is about on par with what the Windows drivers for the stick manage to deliver. What works: - Digital stick - 6 main buttons - Xbox button - The two buttons on the back - The locking buttons (preventing accidental Xbox button press) What doesn't work: - Two of the main buttons (don't work on Windows either) - The "Haptic" button setting does not have an effect (not sure if it works on Windows) I added the MAP_TRIGGERS_TO_BUTTONS option but in my (limited) testing there was no practical difference with or without. The FightStick does not have triggers though so adding it makes sense. Signed-off-by:
Silvan Jegen <s.jegen@gmail.com> Signed-off-by:
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Arnd Bergmann authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit a6ed4a18 ] There are two definitions of xpad_identify_controller(), one is used when CONFIG_JOYSTICK_XPAD_LEDS is set, but the other one is empty and never used, and we get a gcc warning about it: drivers/input/joystick/xpad.c:1210:13: warning: 'xpad_identify_controller' defined but not used [-Wunused-function] This removes the second definition. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Fixes: cae705ba ("Input: xpad - re-send LED command on present event") Signed-off-by:
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Pavel Rojtberg authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 95162dc8 ] Apparently the Covert Forces ID is not Covert Forces pad exclusive, but rather denotes a new firmware version that can be found on all new controllers and can be also updated on old hardware using Windows 10. see: https://github.com/paroj/xpad/issues/19Signed-off-by:
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Dmitry Torokhov authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit d9be398a ] When lighting up the segment identifying wireless controller, Instead of sending command directly to the controller, let's do it via LED API (usinf led_set_brightness) so that LED object state is in sync with controller state and we'll light up the correct segment on resume as well. Signed-off-by:
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Pavel Rojtberg authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 4220f7db ] The irq_out urb is dead after suspend/ resume on my x360 wr pad. (also reproduced by Zachary Lund [0]) Work around this by implementing suspend, resume, and reset_resume callbacks and properly shutting down URBs on suspend and restarting them on resume. [0]: https://github.com/paroj/xpad/issues/6Signed-off-by:
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Pierre-Loup A. Griffais authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 2a6d7527 ] There's apparently a serial number woven into both input and output packets; neglecting to specify a valid serial number causes the controller to ignore the rumble packets. The scale of the rumble was also apparently halved in the packets. The initialization packet had to be changed to allow force feedback to work. see https://github.com/paroj/xpad/issues/7 for details. Signed-off-by:
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Pierre-Loup A. Griffais authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 09c8b00a ] Handle the "a new device is present" message properly by dynamically creating the input device at this point in time. This means we now do not "preallocate" all 4 devices when a single wireless base station is seen. This requires a workqueue as we are in interrupt context when we learn about this. Also properly disconnect any devices that we are told are removed. Signed-off-by:
"Pierre-Loup A. Griffais" <pgriffais@valvesoftware.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Clement Calmels authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 93a017aa ] When powering up a wireless xbox 360 controller, some wrong joystick events are generated. It is annoying because, for example, it makes unwanted moves in Steam big picture mode's menu. When my controller is powering up, this packet is received by the driver: 00000000: 00 0f 00 f0 00 cc ff cf 8b e0 86 6a 68 f0 00 20 ...........jh.. 00000010: 13 e3 20 1d 30 03 40 01 50 01 ff ff .. .0.@.P... According to xboxdrv userspace driver source code, this packet is only dumping a serial id and should not be interpreted as joystick events. This issue can be easily seen with jstest: $ jstest --event /dev/input/js0 This patch only adds a way to filter out this "serial" packet and as a result it removes the spurous events. Signed-off-by:
Clement Calmels <clement.calmels@free.fr> Signed-off-by:
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Vasanthakumar Thiagarajan authored
BugLink: https://bugs.launchpad.net/bugs/1810967 commit ebaa4b16 upstream. arvifs list is traversed within data_lock spin_lock in tasklet context to fill channel information from the corresponding vif. This means any access to arvifs list for add/del operations should also be protected with the same spin_lock to avoid the race. Fix this by performing list add/del on arvfis within the data_lock. This could fix kernel panic something like the below. LR is at ath10k_htt_rx_pktlog_completion_handler+0x100/0xb6c [ath10k_core] PC is at ath10k_htt_rx_pktlog_completion_handler+0x1c0/0xb6c [ath10k_core] Internal error: Oops: 17 [#1] PREEMPT SMP ARM [<bf4857f4>] (ath10k_htt_rx_pktlog_completion_handler+0x2f4/0xb6c [ath10k_core]) [<bf487540>] (ath10k_htt_txrx_compl_task+0x8b4/0x1188 [ath10k_core]) [<c00312d4>] (tasklet_action+0x8c/0xec) [<c00309a8>] (__do_softirq+0xdc/0x208) [<c0030d6c>] (irq_exit+0x84/0xe0) [<c005db04>] (__handle_domain_irq+0x80/0xa0) [<c00085c4>] (gic_handle_irq+0x38/0x5c) [<c0009640>] (__irq_svc+0x40/0x74) (gdb) list *(ath10k_htt_rx_pktlog_completion_handler+0x1c0) 0x136c0 is in ath10k_htt_rx_h_channel (drivers/net/wireless/ath/ath10k/htt_rx.c:769) 764 struct cfg80211_chan_def def; 765 766 lockdep_assert_held(&ar->data_lock); 767 768 list_for_each_entry(arvif, &ar->arvifs, list) { 769 if (arvif->vdev_id == vdev_id && 770 ath10k_mac_vif_chan(arvif->vif, &def) == 0) 771 return def.chan; 772 } 773 Signed-off-by:
Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com> Signed-off-by:
Kalle Valo <kvalo@qca.qualcomm.com> Signed-off-by:
Amit Pundir <amit.pundir@linaro.org> Signed-off-by:
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Greg Hackmann authored
BugLink: https://bugs.launchpad.net/bugs/1810967 (commit 1a381d4a upstream) Linking the ARM64 defconfig kernel with LLVM lld fails with the error: ld.lld: error: unknown argument: -p Makefile:1015: recipe for target 'vmlinux' failed Without this flag, the ARM64 defconfig kernel successfully links with lld and boots on Dragonboard 410c. After digging through binutils source and changelogs, it turns out that -p is only relevant to ancient binutils installations targeting 32-bit ARM. binutils accepts -p for AArch64 too, but it's always been undocumented and silently ignored. A comment in ld/emultempl/aarch64elf.em explains that it's "Only here for backwards compatibility". Since this flag is a no-op on ARM64, we can safely drop it. Acked-by:
Will Deacon <will.deacon@arm.com> Reviewed-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
Greg Hackmann <ghackmann@google.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Andy Lutomirski authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit b3681dd5 ] error_entry and error_exit communicate the user vs. kernel status of the frame using %ebx. This is unnecessary -- the information is in regs->cs. Just use regs->cs. This makes error_entry simpler and makes error_exit more robust. It also fixes a nasty bug. Before all the Spectre nonsense, the xen_failsafe_callback entry point returned like this: ALLOC_PT_GPREGS_ON_STACK SAVE_C_REGS SAVE_EXTRA_REGS ENCODE_FRAME_POINTER jmp error_exit And it did not go through error_entry. This was bogus: RBX contained garbage, and error_exit expected a flag in RBX. Fortunately, it generally contained *nonzero* garbage, so the correct code path was used. As part of the Spectre fixes, code was added to clear RBX to mitigate certain speculation attacks. Now, depending on kernel configuration, RBX got zeroed and, when running some Wine workloads, the kernel crashes. This was introduced by: commit 3ac6d8c7 ("x86/entry/64: Clear registers for exceptions/interrupts, to reduce speculation attack surface") With this patch applied, RBX is no longer needed as a flag, and the problem goes away. I suspect that malicious userspace could use this bug to crash the kernel even without the offending patch applied, though. [ Historical note: I wrote this patch as a cleanup before I was aware of the bug it fixed. ] [ Note to stable maintainers: this should probably get applied to all kernels. If you're nervous about that, a more conservative fix to add xorl %ebx,%ebx; incl %ebx before the jump to error_exit should also fix the problem. ] Reported-and-tested-by:
M. Vefa Bicakci <m.v.b@runbox.com> Signed-off-by:
Andy Lutomirski <luto@kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Cc: xen-devel@lists.xenproject.org Fixes: 3ac6d8c7 ("x86/entry/64: Clear registers for exceptions/interrupts, to reduce speculation attack surface") Link: http://lkml.kernel.org/r/b5010a090d3586b2d6e06c7ad3ec5542d1241c45.1532282627.git.luto@kernel.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Nicolas Iooss authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 75ca5b22 ] As EBS does not mean anything reasonable in the context it is used, it seems like a misspelling for EBX. Signed-off-by:
Nicolas Iooss <nicolas.iooss_linux@m4x.org> Acked-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Johan Hovold authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit d397dbe6 ] Use the new of_get_compatible_child() helper to lookup the mdio child node instead of using of_find_compatible_node(), which searches the entire tree from a given start node and thus can return an unrelated (i.e. non-child) node. This also addresses a potential use-after-free (e.g. after probe deferral) as the tree-wide helper drops a reference to its first argument (i.e. the node of the device being probed). Fixes: aa09677c ("net: bcmgenet: add MDIO routines") Cc: stable <stable@vger.kernel.org> # 3.15 Cc: David S. Miller <davem@davemloft.net> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Johan Hovold authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 5bf59773 ] Use the new of_get_compatible_child() helper to lookup the nfc child node instead of using of_find_compatible_node(), which searches the entire tree from a given start node and thus can return an unrelated (i.e. non-child) node. This also addresses a potential use-after-free (e.g. after probe deferral) as the tree-wide helper drops a reference to its first argument (i.e. the parent node). Fixes: e097dc62 ("NFC: nfcmrvl: add UART driver") Fixes: d8e018c0 ("NFC: nfcmrvl: update device tree bindings for Marvell NFC") Cc: stable <stable@vger.kernel.org> # 4.2 Cc: Vincent Cuissard <cuissard@marvell.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by:
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Johan Hovold authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 36156f92 ] Add of_get_compatible_child() helper that can be used to lookup compatible child nodes. Several drivers currently use of_find_compatible_node() to lookup child nodes while failing to notice that the of_find_ functions search the entire tree depth-first (from a given start node) and therefore can match unrelated nodes. The fact that these functions also drop a reference to the node they start searching from (e.g. the parent node) is typically also overlooked, something which can lead to use-after-free bugs. Signed-off-by:
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Yufen Yu authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 1a413646 ] Other filesystems such as ext4, f2fs and ubifs all return ENXIO when lseek (SEEK_DATA or SEEK_HOLE) requests a negative offset. man 2 lseek says : EINVAL whence is not valid. Or: the resulting file offset would be : negative, or beyond the end of a seekable device. : : ENXIO whence is SEEK_DATA or SEEK_HOLE, and the file offset is beyond : the end of the file. Make tmpfs return ENXIO under these circumstances as well. After this, tmpfs also passes xfstests's generic/448. [akpm@linux-foundation.org: rewrite changelog] Link: http://lkml.kernel.org/r/1540434176-14349-1-git-send-email-yuyufen@huawei.comSigned-off-by:
Yufen Yu <yuyufen@huawei.com> Reviewed-by:
Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hughd@google.com> Cc: William Kucharski <william.kucharski@oracle.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Satheesh Rajendran authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit 437ccdc8 ] When VPHN function is not supported and during cpu hotplug event, kernel prints message 'VPHN function not supported. Disabling polling...'. Currently it prints on every hotplug event, it floods dmesg when a KVM guest tries to hotplug huge number of vcpus, let's just print once and suppress further kernel prints. Signed-off-by:
Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Prarit Bhargava authored
BugLink: https://bugs.launchpad.net/bugs/1810967 [ Upstream commit c2b94c72 ] gcc 8.1.0 warns with: kernel/debug/kdb/kdb_support.c: In function ‘kallsyms_symbol_next’: kernel/debug/kdb/kdb_support.c:239:4: warning: ‘strncpy’ specified bound depends on the length of the source argument [-Wstringop-overflow=] strncpy(prefix_name, name, strlen(name)+1); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/debug/kdb/kdb_support.c:239:31: note: length computed here Use strscpy() with the destination buffer size, and use ellipses when displaying truncated symbols. v2: Use strscpy() Signed-off-by:
Prarit Bhargava <prarit@redhat.com> Cc: Jonathan Toppins <jtoppins@redhat.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: kgdb-bugreport@lists.sourceforge.net Reviewed-by:
Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by:
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