Mao Wenan cafe8df8b9 net: phy: Fix lack of reference count on PHY driver ... There is currently no reference count being held on the PHY driver, which makes it possible to remove the PHY driver module while the PHY state machine is running and polling the PHY. This could cause crashes similar to this one to show up: [ 43.361162] BUG: unable to handle kernel NULL pointer dereference at 0000000000000140 [ 43.361162] IP: phy_state_machine+0x32/0x490 [ 43.361162] PGD 59dc067 [ 43.361162] PUD 0 [ 43.361162] [ 43.361162] Oops: 0000 [#1] SMP [ 43.361162] Modules linked in: dsa_loop [last unloaded: broadcom] [ 43.361162] CPU: 0 PID: 1299 Comm: kworker/0:3 Not tainted 4.10.0-rc5+ #415 [ 43.361162] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu2 04/01/2014 [ 43.361162] Workqueue: events_power_efficient phy_state_machine [ 43.361162] task: ffff880006782b80 task.stack: ffffc90000184000 [ 43.361162] RIP: 0010:phy_state_machine+0x32/0x490 [ 43.361162] RSP: 0018:ffffc90000187e18 EFLAGS: 00000246 [ 43.361162] RAX: 0000000000000000 RBX: ffff8800059e53c0 RCX: ffff880006a15c60 [ 43.361162] RDX: ffff880006782b80 RSI: 0000000000000000 RDI: ffff8800059e5428 [ 43.361162] RBP: ffffc90000187e48 R08: ffff880006a15c40 R09: 0000000000000000 [ 43.361162] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800059e5428 [ 43.361162] R13: ffff8800059e5000 R14: 0000000000000000 R15: ffff880006a15c40 [ 43.361162] FS: 0000000000000000(0000) GS:ffff880006a00000(0000) knlGS:0000000000000000 [ 43.361162] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.361162] CR2: 0000000000000140 CR3: 0000000005979000 CR4: 00000000000006f0 [ 43.361162] Call Trace: [ 43.361162] process_one_work+0x1b4/0x3e0 [ 43.361162] worker_thread+0x43/0x4d0 [ 43.361162] ? __schedule+0x17f/0x4e0 [ 43.361162] kthread+0xf7/0x130 [ 43.361162] ? process_one_work+0x3e0/0x3e0 [ 43.361162] ? kthread_create_on_node+0x40/0x40 [ 43.361162] ret_from_fork+0x29/0x40 [ 43.361162] Code: 56 41 55 41 54 4c 8d 67 68 53 4c 8d af 40 fc ff ff 48 89 fb 4c 89 e7 48 83 ec 08 e8 c9 9d 27 00 48 8b 83 60 ff ff ff 44 8b 73 98 <48> 8b 90 40 01 00 00 44 89 f0 48 85 d2 74 08 4c 89 ef ff d2 8b Keep references on the PHY driver module right before we are going to utilize it in phy_attach_direct(), and conversely when we don't use it anymore in phy_detach(). Signed-off-by: Mao Wenan <maowenan@huawei.com> [florian: rebase, rework commit message] Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-02-02 22:59:43 -05:00
..
accessibility
acpi	ACPI fixes for v4.10-rc6	2017-01-26 17:27:00 -08:00
amba
android
ata	ata: sata_mv:- Handle return value of devm_ioremap.	2017-01-06 15:45:32 -05:00
atm	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
auxdisplay	auxdisplay: fix new ht16k33 build errors	2017-01-11 09:27:30 +01:00
base	memory_hotplug: make zone_can_shift() return a boolean value	2017-01-24 16:26:14 -08:00
bcma	Revert "bcma: init serial console directly from ChipCommon code"	2017-01-17 14:23:44 +02:00
block	xen-blkfront: correct maximum segment accounting	2017-01-23 13:27:42 -05:00
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	virtio_console: fix a crash in config_work_handler	2017-01-19 23:46:31 +02:00
clk	One fix for Samsung Exynos524x SoCs where recent IOMMU patches have	2017-01-21 18:46:45 -08:00
clocksource	clocksource/exynos_mct: Clear interrupt when cpu is shut down	2017-01-17 10:08:38 +01:00
connector
cpufreq	Merge branches 'pm-sleep' and 'pm-cpufreq'	2017-01-27 00:08:59 +01:00
cpuidle	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2016-12-27 17:51:36 -08:00
dax	libnvdimm for 4.10	2016-12-18 15:49:10 -08:00
dca
devfreq	PM / devfreq: exynos-bus: Fix the wrong return value	2017-01-03 00:21:45 +01:00
dio	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
dma	dmaengine: pl330: fix double lock	2017-01-25 15:35:11 +05:30
dma-buf
edac	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
eisa
extcon	extcon: return error code on failure	2017-01-11 09:11:39 +01:00
firewire
firmware	Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-01-15 10:54:39 -08:00
fmc
fpga	fpga: Clarify how write_init works streaming modes	2016-11-29 15:51:49 -06:00
gpio	gpio: provide lockdep keys for nested/unnested irqchips	2017-01-19 09:57:20 +01:00
gpu	drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj()	2017-01-29 13:50:06 -08:00
hid	HID: cp2112: fix gpio-callback error handling	2017-01-31 12:59:33 +01:00
hsi
hv	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
hwmon	hwmon: (lm90) fix temp1_max_alarm attribute	2017-01-02 10:15:28 -08:00
hwspinlock
hwtracing	coresight/etm3/4x: Consolidate hotplug state space	2016-12-25 10:47:44 +01:00
i2c	i2c: imx-lpi2c: add VLLS mode support	2017-01-26 00:24:23 +01:00
ide	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
idle	Power management material for v4.10-rc1	2016-12-13 10:41:53 -08:00
iio	First round of IIO fixes for the 4.10 cycle.	2017-01-02 16:59:44 +01:00
infiniband	RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled	2017-01-27 14:29:04 -05:00
input	Input: synaptics-rmi4 - fix reversed conditions in enable/disable_irq_wake	2017-01-31 00:51:06 -08:00
iommu	IOMMU Fixes for Linux v4.10-rc2	2017-01-06 10:49:36 -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	ISDN: eicon: silence misleading array-bounds warning	2017-01-27 11:27:34 -05:00
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	Char/Misc driver patches for 4.10-rc1	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	md/r5cache: disable write back for degraded array	2017-01-24 11:26:06 -08:00
media	media fixes for v4.10-rc6	2017-01-27 10:29:33 -08:00
memory	Fixes for drivers already queued to prevent	2016-11-30 14:58:00 +01:00
memstick	drivers/memstick/core/memstick.c: avoid -Wnonnull warning	2017-01-24 16:26:14 -08:00
message	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
mfd	- New Device Support	2016-12-19 08:16:26 -08:00
misc	mei: bus: enable OS version only for SPT and newer	2017-01-11 07:43:57 +01:00
mmc	mmc: dw_mmc: force setup bus if active slots exist	2017-01-23 10:19:30 +01:00
mtd	mtd: nand: lpc32xx: fix invalid error handling of a requested irq	2017-01-04 20:50:18 +01:00
net	net: phy: Fix lack of reference count on PHY driver	2017-02-02 22:59:43 -05:00
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	libnvdimm, namespace: fix pmem namespace leak, delete when size set to zero	2017-01-13 09:50:33 -08:00
nvme	nvme-fc: use blk_rq_nr_phys_segments	2017-01-26 17:49:14 +02:00
nvmem	nvmem: fix nvmem_cell_read() return type doc	2017-01-04 18:22:47 +01:00
of	pci-v4.10-changes	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	parisc, parport_gsc: Fixes for printk continuation lines	2017-01-28 21:54:21 +01:00
pci	PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling	2017-01-17 08:41:51 -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	SCSI misc on 20161213	2016-12-14 10:49:33 -08:00
pinctrl	pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler	2017-01-30 15:53:57 +01:00
platform	platform/x86: ideapad-laptop: handle ACPI event 1	2017-01-22 12:47:06 +02:00
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	pwm: Changes for v4.10-rc1	2016-12-15 11:45:13 -08:00
rapidio
ras
regulator	- New Device Support	2016-12-19 08:16:26 -08:00
remoteproc	Revert "remoteproc: Merge table_ptr and cached_table pointers"	2016-12-30 03:26:31 -08:00
reset	ARM: SoC driver updates for v4.10	2016-12-15 16:03:25 -08:00
rpmsg	rpmsg: virtio_rpmsg_bus: fix channel creation	2016-12-30 03:12:11 -08:00
rtc	rtc: jz4740: make the driver buildable as a module again	2017-01-26 23:03:21 +01:00
s390	virtio/s390: virtio: constify virtio_config_ops structures	2017-01-19 23:46:34 +02:00
sbus	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
scsi	Revert "sd: remove __data_len hack for WRITE SAME"	2017-01-26 10:01:20 -07:00
sfi
sh	lib: radix-tree: check accounting of existing slot replacement users	2016-12-12 18:55:08 -08:00
sn
soc	soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()	2017-01-12 13:37:49 -08:00
spi	spi: Fixes for v4.10	2017-01-20 12:25:11 -08:00
spmi
ssb
staging	staging: octeon: Call SET_NETDEV_DEV()	2017-01-03 17:11:50 +01:00
target	target: support XCOPY requests without parameters	2017-01-10 08:41:30 -08:00
tc
thermal	Revert "thermal: thermal_hwmon: Convert to hwmon_device_register_with_info()"	2017-01-25 09:51:08 +08:00
thunderbolt	Char/Misc driver patches for 4.10-rc1	2016-12-13 12:11:01 -08:00
tty	sysrq: attach sysrq handler correctly for 32-bit kernel	2017-01-11 09:22:54 +01:00
uio	uio-hv-generic: store physical addresses instead of virtual	2016-12-10 14:57:58 +01:00
usb	xhci: remove WARN_ON if dma mask is not set for platform devices	2017-01-20 14:55:20 +01:00
uwb
vfio	vfio/spapr: fail tce_iommu_attach_group() when iommu_data is null	2017-01-24 10:12:04 -07:00
vhost	vhost/vsock: handle vhost_vq_init_access() error	2017-01-25 00:33:10 +02:00
video	fbdev: color map copying bounds checking	2017-01-24 16:26:14 -08:00
virt
virtio	vring: Force use of DMA API for ARM-based systems with legacy devices	2017-01-25 00:33:11 +02:00
vlynq
vme	vme: Fix wrong pointer utilization in ca91cx42_slave_get	2017-01-11 10:42:16 +01:00
w1
watchdog	Watchdog updates for v4.10	2016-12-24 11:27:45 -08:00
xen	Merge branch 'stable/for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb	2017-01-27 12:17:07 -08:00
zorro	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
Kconfig
Makefile