mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-03-02 16:42:00 -05:00
Code Issues Packages Projects Releases Wiki Activity
Files
cdcb33f9824429a926b971bf041a6cec238f91ff
linux/drivers
History
Bjorn Helgaas cdcb33f982 PCI: Avoid possible deadlock on pci_lock and p->pi_lock 
pci_lock is an IRQ-safe spinlock that protects all accesses to PCI
configuration space (see PCI_OP_READ() and PCI_OP_WRITE() in pci/access.c).

The pci_cfg_access_unlock() path acquires pci_lock, then p->pi_lock (inside
wake_up_all()).  According to lockdep, there is a possible path involving
snbep_uncore_pci_read_counter() that could acquire them in the reverse
order: acquiring p->pi_lock, then pci_lock, which could result in a
deadlock.  Lockdep details are in the bugzilla below.

Avoid the possible deadlock by dropping pci_lock before waking up any
config access waiters.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=192901
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-01-30 16:55:33 -06:00
..
accessibility
…
acpi
PCI/ACPI: Fix bus range comparison in pci_mcfg_lookup()
2017-01-12 14:32:09 -06:00
amba
…
android
…
ata
Merge branch 'for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2016-12-13 15:30:50 -08:00
atm
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
auxdisplay
auxdisplay: ht16k33: select framebuffer helper modules
2016-11-30 13:04:31 +01:00
base
avoid spurious "may be used uninitialized" warning
2016-12-25 14:56:58 -08:00
bcma
bcma: add Dell Inspiron 3148
2016-11-29 17:35:14 +02:00
block
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
bluetooth
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-12-16 10:24:44 -08:00
bus
cpu/hotplug: Cleanup state names
2016-12-25 10:47:44 +01:00
cdrom
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
char
clocksource: Use a plain u64 instead of cycle_t
2016-12-25 11:04:12 +01:00
clk
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2016-12-15 16:06:15 -08:00
clocksource
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-12-25 14:30:04 -08:00
connector
…
cpufreq
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
cpuidle
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
crypto
crypto: add virtio-crypto driver
2016-12-16 00:13:32 +02:00
dax
Merge tag 'libnvdimm-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2016-12-18 15:49:10 -08:00
dca
…
devfreq
devfreq: rk3399_dmc: Don't use OPP structures outside of RCU locks
2016-12-08 01:46:07 +01:00
dio
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
dma
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
dma-buf
…
edac
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
eisa
…
extcon
Merge tag 'sound-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
2016-12-14 11:14:28 -08:00
firewire
…
firmware
firmware: dmi_scan: Always show system identification string
2016-12-19 10:01:47 +01:00
fmc
…
fpga
fpga: Clarify how write_init works streaming modes
2016-11-29 15:51:49 -06:00
gpio
Merge tag 'mfd-for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2016-12-19 08:16:26 -08:00
gpu
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
hid
Merge branches 'for-4.10/asus', 'for-4.10/cp2112', 'for-4.10/i2c-hid-nopower', 'for-4.10/intel-ish', 'for-4.10/mayflash', 'for-4.10/microsoft-surface-3', 'for-4.10/multitouch', 'for-4.10/sony', 'for-4.10/udraw-ps3', 'for-4.10/upstream' and 'for-4.10/wacom/generic' into for-linus
2016-12-14 10:12:26 +01:00
hsi
…
hv
clocksource: Use a plain u64 instead of cycle_t
2016-12-25 11:04:12 +01:00
hwmon
hwmon: (g762) Fix overflows and crash seen when writing limit attributes
2016-12-12 11:33:44 -08:00
hwspinlock
…
hwtracing
coresight/etm3/4x: Consolidate hotplug state space
2016-12-25 10:47:44 +01:00
i2c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
ide
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
idle
Merge tag 'pm-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2016-12-13 10:41:53 -08:00
iio
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
infiniband
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
input
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
iommu
Merge tag 'acpi-extra-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2016-12-22 10:19:32 -08:00
ipack
…
irqchip
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-12-25 14:30:04 -08:00
isdn
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
leds
cpu/hotplug: Cleanup state names
2016-12-25 10:47:44 +01:00
lguest
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
lightnvm
Merge tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2016-12-13 12:11:01 -08:00
macintosh
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
mailbox
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
mcb
…
md
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
media
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
memory
Merge tag 'davinci-for-v4.10/drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers
2016-11-30 14:58:00 +01:00
memstick
Merge branch 'for-4.10/block' of git://git.kernel.dk/linux-block
2016-12-13 10:19:16 -08:00
message
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
mfd
Merge tag 'mfd-for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2016-12-19 08:16:26 -08:00
misc
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
mmc
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
mtd
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
net
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-12-25 14:30:04 -08:00
nfc
…
ntb
ntb_transport: Remove unnecessary call to ntb_peer_spad_read
2016-12-23 16:11:07 -05:00
nubus
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
nvdimm
Merge tag 'libnvdimm-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2016-12-18 15:49:10 -08:00
nvme
nvme : Use correct scnprintf in cmb show
2016-12-19 08:35:24 -07:00
nvmem
…
of
Merge tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2016-12-15 12:46:48 -08:00
oprofile
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
parisc
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
parport
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
pci
PCI: Avoid possible deadlock on pci_lock and p->pi_lock
2017-01-30 16:55:33 -06:00
pcmcia
drivers/pcmcia/m32r_pcc.c: check return from add_pcc_socket
2016-12-12 18:55:06 -08:00
perf
cpu/hotplug: Cleanup state names
2016-12-25 10:47:44 +01:00
phy
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2016-12-14 10:49:33 -08:00
pinctrl
Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-12-15 15:50:24 -08:00
platform
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
pnp
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
power
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
powercap
powercap / RAPL: Add Knights Mill CPUID
2016-11-30 23:41:33 +01:00
pps
…
ps3
…
ptp
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-12-12 19:56:15 -08:00
pwm
Merge tag 'pwm/for-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
2016-12-15 11:45:13 -08:00
rapidio
…
ras
…
regulator
Merge tag 'mfd-for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2016-12-19 08:16:26 -08:00
remoteproc
remoteproc: qcom_adsp_pil: select qcom_scm
2016-12-09 16:16:56 -08:00
reset
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2016-12-15 16:03:25 -08:00
rpmsg
Merge tag 'rpmsg-v4.10' of git://github.com/andersson/remoteproc
2016-12-13 08:52:45 -08:00
rtc
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
s390
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
sbus
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
scsi
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-12-25 14:30:04 -08:00
sfi
…
sh
lib: radix-tree: check accounting of existing slot replacement users
2016-12-12 18:55:08 -08:00
sn
…
soc
Merge tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-12-16 09:26:42 -08:00
spi
Merge tag 'dmaengine-4.10-rc1' of git://git.infradead.org/users/vkoul/slave-dma
2016-12-14 20:42:45 -08:00
spmi
…
ssb
…
staging
staging/lustre/libcfs: Convert to hotplug state machine
2016-12-25 10:47:43 +01:00
target
Merge branch 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux
2016-12-21 10:16:05 -08:00
tc
…
thermal
Merge tag 'pm-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2016-12-13 10:41:53 -08:00
thunderbolt
Merge tag 'char-misc-4.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2016-12-13 12:11:01 -08:00
tty
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
uio
uio-hv-generic: store physical addresses instead of virtual
2016-12-10 14:57:58 +01:00
usb
ktime: Cleanup ktime_set() usage
2016-12-25 17:21:22 +01:00
uwb
…
vfio
Merge tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-12-16 09:26:42 -08:00
vhost
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-12-16 10:24:44 -08:00
video
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
virt
…
virtio
virtio_mmio: Set dev.release() to avoid warning
2016-12-16 00:13:39 +02:00
vlynq
…
vme
…
w1
…
watchdog
Merge tag 'watchdog-for-linus-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
2016-12-24 11:27:45 -08:00
xen
cpu/hotplug: Cleanup state names
2016-12-25 10:47:44 +01:00
zorro
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
Kconfig
…
Makefile
…