From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Chris Bainbridge <chris.bainbridge@gmail.com>,
Mathias Nyman <mathias.nyman@linux.intel.com>
Subject: [PATCH 4.6 058/100] usb: core: hub: hub_port_init lock controller instead of bus
Date: Mon, 30 May 2016 13:49:53 -0700 [thread overview]
Message-ID: <20160530204910.320649906@linuxfoundation.org> (raw)
In-Reply-To: <20160530204908.422037419@linuxfoundation.org>
4.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Bainbridge <chris.bainbridge@gmail.com>
commit feb26ac31a2a5cb88d86680d9a94916a6343e9e6 upstream.
The XHCI controller presents two USB buses to the system - one for USB2
and one for USB3. The hub init code (hub_port_init) is reentrant but
only locks one bus per thread, leading to a race condition failure when
two threads attempt to simultaneously initialise a USB2 and USB3 device:
[ 8.034843] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[ 13.183701] usb 3-3: device descriptor read/all, error -110
On a test system this failure occurred on 6% of all boots.
The call traces at the point of failure are:
Call Trace:
[<ffffffff81b9bab7>] schedule+0x37/0x90
[<ffffffff817da7cd>] usb_kill_urb+0x8d/0xd0
[<ffffffff8111e5e0>] ? wake_up_atomic_t+0x30/0x30
[<ffffffff817dafbe>] usb_start_wait_urb+0xbe/0x150
[<ffffffff817db10c>] usb_control_msg+0xbc/0xf0
[<ffffffff817d07de>] hub_port_init+0x51e/0xb70
[<ffffffff817d4697>] hub_event+0x817/0x1570
[<ffffffff810f3e6f>] process_one_work+0x1ff/0x620
[<ffffffff810f3dcf>] ? process_one_work+0x15f/0x620
[<ffffffff810f4684>] worker_thread+0x64/0x4b0
[<ffffffff810f4620>] ? rescuer_thread+0x390/0x390
[<ffffffff810fa7f5>] kthread+0x105/0x120
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
[<ffffffff81ba183f>] ret_from_fork+0x3f/0x70
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
Call Trace:
[<ffffffff817fd36d>] xhci_setup_device+0x53d/0xa40
[<ffffffff817fd87e>] xhci_address_device+0xe/0x10
[<ffffffff817d047f>] hub_port_init+0x1bf/0xb70
[<ffffffff811247ed>] ? trace_hardirqs_on+0xd/0x10
[<ffffffff817d4697>] hub_event+0x817/0x1570
[<ffffffff810f3e6f>] process_one_work+0x1ff/0x620
[<ffffffff810f3dcf>] ? process_one_work+0x15f/0x620
[<ffffffff810f4684>] worker_thread+0x64/0x4b0
[<ffffffff810f4620>] ? rescuer_thread+0x390/0x390
[<ffffffff810fa7f5>] kthread+0x105/0x120
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
[<ffffffff81ba183f>] ret_from_fork+0x3f/0x70
[<ffffffff810fa6f0>] ? kthread_create_on_node+0x200/0x200
Which results from the two call chains:
hub_port_init
usb_get_device_descriptor
usb_get_descriptor
usb_control_msg
usb_internal_control_msg
usb_start_wait_urb
usb_submit_urb / wait_for_completion_timeout / usb_kill_urb
hub_port_init
hub_set_address
xhci_address_device
xhci_setup_device
Mathias Nyman explains the current behaviour violates the XHCI spec:
hub_port_reset() will end up moving the corresponding xhci device slot
to default state.
As hub_port_reset() is called several times in hub_port_init() it
sounds reasonable that we could end up with two threads having their
xhci device slots in default state at the same time, which according to
xhci 4.5.3 specs still is a big no no:
"Note: Software shall not transition more than one Device Slot to the
Default State at a time"
So both threads fail at their next task after this.
One fails to read the descriptor, and the other fails addressing the
device.
Fix this in hub_port_init by locking the USB controller (instead of an
individual bus) to prevent simultaneous initialisation of both buses.
Fixes: 638139eb95d2 ("usb: hub: allow to process more usb hub events in parallel")
Link: https://lkml.org/lkml/2016/2/8/312
Link: https://lkml.org/lkml/2016/2/4/748
Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/hcd.c | 15 +++++++++++++--
drivers/usb/core/hub.c | 8 ++++----
include/linux/usb.h | 3 +--
include/linux/usb/hcd.h | 1 +
4 files changed, 19 insertions(+), 8 deletions(-)
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -994,7 +994,7 @@ static void usb_bus_init (struct usb_bus
bus->bandwidth_allocated = 0;
bus->bandwidth_int_reqs = 0;
bus->bandwidth_isoc_reqs = 0;
- mutex_init(&bus->usb_address0_mutex);
+ mutex_init(&bus->devnum_next_mutex);
}
/*-------------------------------------------------------------------------*/
@@ -2521,6 +2521,14 @@ struct usb_hcd *usb_create_shared_hcd(co
return NULL;
}
if (primary_hcd == NULL) {
+ hcd->address0_mutex = kmalloc(sizeof(*hcd->address0_mutex),
+ GFP_KERNEL);
+ if (!hcd->address0_mutex) {
+ kfree(hcd);
+ dev_dbg(dev, "hcd address0 mutex alloc failed\n");
+ return NULL;
+ }
+ mutex_init(hcd->address0_mutex);
hcd->bandwidth_mutex = kmalloc(sizeof(*hcd->bandwidth_mutex),
GFP_KERNEL);
if (!hcd->bandwidth_mutex) {
@@ -2532,6 +2540,7 @@ struct usb_hcd *usb_create_shared_hcd(co
dev_set_drvdata(dev, hcd);
} else {
mutex_lock(&usb_port_peer_mutex);
+ hcd->address0_mutex = primary_hcd->address0_mutex;
hcd->bandwidth_mutex = primary_hcd->bandwidth_mutex;
hcd->primary_hcd = primary_hcd;
primary_hcd->primary_hcd = primary_hcd;
@@ -2598,8 +2607,10 @@ static void hcd_release(struct kref *kre
struct usb_hcd *hcd = container_of (kref, struct usb_hcd, kref);
mutex_lock(&usb_port_peer_mutex);
- if (usb_hcd_is_primary_hcd(hcd))
+ if (usb_hcd_is_primary_hcd(hcd)) {
+ kfree(hcd->address0_mutex);
kfree(hcd->bandwidth_mutex);
+ }
if (hcd->shared_hcd) {
struct usb_hcd *peer = hcd->shared_hcd;
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2080,7 +2080,7 @@ static void choose_devnum(struct usb_dev
struct usb_bus *bus = udev->bus;
/* be safe when more hub events are proceed in parallel */
- mutex_lock(&bus->usb_address0_mutex);
+ mutex_lock(&bus->devnum_next_mutex);
if (udev->wusb) {
devnum = udev->portnum + 1;
BUG_ON(test_bit(devnum, bus->devmap.devicemap));
@@ -2098,7 +2098,7 @@ static void choose_devnum(struct usb_dev
set_bit(devnum, bus->devmap.devicemap);
udev->devnum = devnum;
}
- mutex_unlock(&bus->usb_address0_mutex);
+ mutex_unlock(&bus->devnum_next_mutex);
}
static void release_devnum(struct usb_device *udev)
@@ -4364,7 +4364,7 @@ hub_port_init(struct usb_hub *hub, struc
if (oldspeed == USB_SPEED_LOW)
delay = HUB_LONG_RESET_TIME;
- mutex_lock(&hdev->bus->usb_address0_mutex);
+ mutex_lock(hcd->address0_mutex);
/* Reset the device; full speed may morph to high speed */
/* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
@@ -4650,7 +4650,7 @@ fail:
hub_port_disable(hub, port1, 0);
update_devnum(udev, devnum); /* for disconnect processing */
}
- mutex_unlock(&hdev->bus->usb_address0_mutex);
+ mutex_unlock(hcd->address0_mutex);
return retval;
}
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -374,13 +374,12 @@ struct usb_bus {
int devnum_next; /* Next open device number in
* round-robin allocation */
+ struct mutex devnum_next_mutex; /* devnum_next mutex */
struct usb_devmap devmap; /* device address allocation map */
struct usb_device *root_hub; /* Root hub */
struct usb_bus *hs_companion; /* Companion EHCI bus, if any */
- struct mutex usb_address0_mutex; /* unaddressed device mutex */
-
int bandwidth_allocated; /* on this bus: how much of the time
* reserved for periodic (intr/iso)
* requests is used, on average?
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -181,6 +181,7 @@ struct usb_hcd {
* bandwidth_mutex should be dropped after a successful control message
* to the device, or resetting the bandwidth after a failed attempt.
*/
+ struct mutex *address0_mutex;
struct mutex *bandwidth_mutex;
struct usb_hcd *shared_hcd;
struct usb_hcd *primary_hcd;
next prev parent reply other threads:[~2016-05-30 21:24 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-30 20:48 [PATCH 4.6 000/100] 4.6.1-stable review Greg Kroah-Hartman
2016-05-30 20:48 ` [PATCH 4.6 001/100] arm64: Fix typo in the pmdp_huge_get_and_clear() definition Greg Kroah-Hartman
2016-05-30 20:48 ` [PATCH 4.6 002/100] arm64: Ensure pmd_present() returns false after pmd_mknotpresent() Greg Kroah-Hartman
2016-05-30 20:48 ` [PATCH 4.6 003/100] arm64: Implement ptep_set_access_flags() for hardware AF/DBM Greg Kroah-Hartman
2016-05-30 20:48 ` [PATCH 4.6 004/100] arm64: Implement pmdp_set_access_flags() " Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 005/100] arm64: cpuinfo: Missing NULL terminator in compat_hwcap_str Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 006/100] arm/arm64: KVM: Enforce Break-Before-Make on Stage-2 page tables Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 007/100] kvm: arm64: Fix EC field in inject_abt64 Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 008/100] perf/x86/intel/uncore: Remove WARN_ON_ONCE in uncore_pci_probe Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 009/100] remove directory incorrectly tries to set delete on close on non-empty directories Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 010/100] fs/cifs: correctly to anonymous authentication via NTLMSSP Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 011/100] fs/cifs: correctly to anonymous authentication for the LANMAN authentication Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 012/100] fs/cifs: correctly to anonymous authentication for the NTLM(v1) authentication Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 013/100] fs/cifs: correctly to anonymous authentication for the NTLM(v2) authentication Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 014/100] asix: Fix offset calculation in asix_rx_fixup() causing slow transmissions Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 015/100] ring-buffer: Use long for nr_pages to avoid overflow failures Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 016/100] ring-buffer: Prevent overflow of size in ring_buffer_resize() Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 017/100] crypto: caam - fix caam_jr_alloc() ret code Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 018/100] crypto: talitos - fix ahash algorithms registration Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 019/100] crypto: sun4i-ss - Replace spinlock_bh by spin_lock_irq{save|restore} Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 020/100] clk: qcom: msm8916: Fix crypto clock flags Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 021/100] crypto: sha1-mb - make sha1_x8_avx2() conform to C function ABI Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 022/100] fscrypto/f2fs: allow fs-specific key prefix for fs encryption Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 023/100] sched/loadavg: Fix loadavg artifacts on fully idle and on fully loaded systems Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 024/100] mfd: omap-usb-tll: Fix scheduling while atomic BUG Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 025/100] Input: pwm-beeper - fix - scheduling while atomic Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 026/100] irqchip/gic: Ensure ordering between read of INTACK and shared data Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 027/100] irqchip/gic-v3: Configure all interrupts as non-secure Group-1 Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 028/100] nfc: st21nfca: Fix static checker warning Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 029/100] can: fix handling of unmodifiable configuration options Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 030/100] mmc: mmc: Fix partition switch timeout for some eMMCs Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 031/100] ACPI / PM: Export acpi_device_fix_up_power() Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 032/100] mmc: sdhci-acpi: Ensure connected devices are powered when probing Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 033/100] mmc: sdhci-acpi: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 034/100] ACPI / osi: Fix an issue that acpi_osi=!* cannot disable ACPICA internal strings Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 036/100] mmc: longer timeout for long read time quirk Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 037/100] mmc: sdhci-pci: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 038/100] Bluetooth: vhci: fix open_timeout vs. hdev race Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 039/100] Bluetooth: vhci: purge unhandled skbs Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 040/100] Bluetooth: vhci: Fix race at creating hci device Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 041/100] mei: fix NULL dereferencing during FW initiated disconnection Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 042/100] mei: amthif: discard not read messages Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 043/100] mei: bus: call mei_cl_read_start under device lock Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 044/100] USB: serial: cp210x: fix hardware flow-control disable Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 045/100] USB: serial: mxuport: fix use-after-free in probe error path Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 046/100] USB: serial: keyspan: " Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 047/100] USB: serial: quatech2: " Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 048/100] USB: serial: io_edgeport: fix memory leaks in attach " Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 049/100] USB: serial: io_edgeport: fix memory leaks in probe " Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 050/100] USB: serial: option: add support for Cinterion PH8 and AHxx Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 051/100] USB: serial: option: add more ZTE device ids Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 052/100] USB: serial: option: add even " Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 053/100] usb: gadget: f_fs: Fix EFAULT generation for async read operations Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 055/100] usb: misc: usbtest: fix pattern tests for scatterlists Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 056/100] USB: leave LPM alone if possible when binding/unbinding interface drivers Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 057/100] usb: gadget: udc: core: Fix argument of dev_err() in usb_gadget_map_request() Greg Kroah-Hartman
2016-05-30 20:49 ` Greg Kroah-Hartman [this message]
2016-05-30 20:49 ` [PATCH 4.6 059/100] usb: host: xhci-rcar: Avoid long wait in xhci_reset() Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 060/100] staging: comedi: das1800: fix possible NULL dereference Greg Kroah-Hartman
2016-05-30 20:49 ` [PATCH 4.6 064/100] MIPS: KVM: Fix timer IRQ race when freezing timer Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 065/100] MIPS: KVM: Fix timer IRQ race when writing CP0_Compare Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 066/100] xen/x86: actually allocate legacy interrupts on PV guests Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 067/100] x86/cpufeature, x86/mm/pkeys: Fix broken compile-time disabling of pkeys Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 068/100] tty: vt, return error when con_startup fails Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 069/100] TTY: n_gsm, fix false positive WARN_ON Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 070/100] tty/serial: atmel: fix hardware handshake selection Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 071/100] Fix OpenSSH pty regression on close Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 073/100] serial: 8250_mid: use proper bar for DNV platform Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 074/100] serial: 8250_mid: recognize interrupt source in handler Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 075/100] serial: samsung: Reorder the sequence of clock control when call s3c24xx_serial_set_termios() Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 076/100] locking,qspinlock: Fix spin_is_locked() and spin_unlock_wait() Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 077/100] clk: bcm2835: add locking to pll*_on/off methods Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 078/100] watchdog: core: Fix circular locking dependency Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 079/100] watchdog: sp5100_tco: properly check for new register layouts Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 080/100] objtool: Allow building with older libelf Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 081/100] Fixing oops in callback path Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 082/100] misc: mic: Fix for double fetch security bug in VOP driver Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 083/100] mcb: Fixed bar number assignment for the gdd Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 084/100] ALSA: hda/realtek - New codecs support for ALC234/ALC274/ALC294 Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 085/100] ALSA: hda - Fix headphone noise on Dell XPS 13 9360 Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 086/100] ALSA: hda/realtek - Add support for ALC295/ALC3254 Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 087/100] ALSA: hda - Fix headset mic detection problem for one Dell machine Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 088/100] IB/srp: Fix a debug kernel crash Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 089/100] IB/srp: Fix srp_create_target() error handling Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 090/100] thunderbolt: Fix double free of drom buffer Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 091/100] md: md.c: fix oops in mddev_suspend for raid0 Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 092/100] SIGNAL: Move generic copy_siginfo() to signal.h Greg Kroah-Hartman
2016-05-30 20:50 ` Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 093/100] btrfs: bugfix: handle FS_IOC32_{GETFLAGS,SETFLAGS,GETVERSION} in btrfs_ioctl Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 094/100] Btrfs: fix handling of faults from btrfs_copy_from_user Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 095/100] UBI: Fix static volume checks when Fastmap is used Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 096/100] hpfs: fix remount failure when there are no options changed Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 097/100] hpfs: implement the show_options method Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 098/100] scsi: Add intermediate STARGET_REMOVE state to scsi_target_state Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 099/100] Revert "scsi: fix soft lockup in scsi_remove_target() on module removal" Greg Kroah-Hartman
2016-05-30 20:50 ` [PATCH 4.6 100/100] kbuild: move -Wunused-const-variable to W=1 warning level Greg Kroah-Hartman
2016-06-01 5:35 ` [PATCH 4.6 000/100] 4.6.1-stable review Guenter Roeck
2016-06-01 16:16 ` Greg Kroah-Hartman
2016-06-02 4:25 ` Xuetao Guan
2016-06-01 14:20 ` Shuah Khan
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