Junjie Mao 805dbe17d1 mac80211_hwsim: release driver when ieee80211_register_hw fails ... The driver is not released when ieee80211_register_hw fails in mac80211_hwsim_create_radio, leading to the access to the unregistered (and possibly freed) device in platform_driver_unregister: [ 0.447547] mac80211_hwsim: ieee80211_register_hw failed (-2) [ 0.448292] ------------[ cut here ]------------ [ 0.448854] WARNING: CPU: 0 PID: 1 at ../include/linux/kref.h:47 kobject_get+0x33/0x50() [ 0.449839] CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-00001-gdd46990-dirty #2 [ 0.450813] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.451512] 00000000 00000000 78025e38 7967c6c6 78025e68 7905e09b 7988b480 00000000 [ 0.452579] 00000001 79887d62 0000002f 79170bb3 79170bb3 78397008 79ac9d74 00000001 [ 0.453614] 78025e78 7905e15d 00000009 00000000 78025e84 79170bb3 78397000 78025e8c [ 0.454632] Call Trace: [ 0.454921] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.455453] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.456067] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.456612] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.457155] [<7905e15d>] warn_slowpath_null+0x1d/0x20 [ 0.457748] [<79170bb3>] kobject_get+0x33/0x50 [ 0.458274] [<7925824f>] get_device+0xf/0x20 [ 0.458779] [<7925b5cd>] driver_detach+0x3d/0xa0 [ 0.459331] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.459927] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.460660] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.461248] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.461824] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.462507] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.463161] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.463758] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.464393] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.465001] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.465569] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.466345] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.466972] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.467546] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.468072] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.468658] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.469303] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.469829] ---[ end trace ad8ac403ff8aef5c ]--- [ 0.470509] ------------[ cut here ]------------ [ 0.471047] WARNING: CPU: 0 PID: 1 at ../kernel/locking/lockdep.c:3161 __lock_acquire.isra.22+0x7aa/0xb00() [ 0.472163] DEBUG_LOCKS_WARN_ON(id >= MAX_LOCKDEP_KEYS) [ 0.472774] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.473815] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.474492] 78025de0 78025de0 78025da0 7967c6c6 78025dd0 7905e09b 79888931 78025dfc [ 0.475515] 00000001 79888a93 00000c59 7907f33a 7907f33a 78028000 fffe9d09 00000000 [ 0.476519] 78025de8 7905e10e 00000009 78025de0 79888931 78025dfc 78025e24 7907f33a [ 0.477523] Call Trace: [ 0.477821] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.478352] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.478976] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.479658] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480417] [<7905e10e>] warn_slowpath_fmt+0x2e/0x30 [ 0.480479] [<7907f33a>] __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480479] [<79078aa5>] ? sched_clock_cpu+0xb5/0xf0 [ 0.480479] [<7907fd06>] lock_acquire+0x56/0x70 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<79682d11>] mutex_lock_nested+0x61/0x2a0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.480479] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.480479] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.480479] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.480479] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.480479] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.480479] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.480479] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.480479] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.480479] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.480479] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.480479] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.480479] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.480479] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.480479] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.480479] ---[ end trace ad8ac403ff8aef5d ]--- [ 0.495478] BUG: unable to handle kernel paging request at 00200200 [ 0.496257] IP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 [ 0.496923] *pde = 00000000 [ 0.497290] Oops: 0002 [#1] [ 0.497653] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.498659] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.499321] task: 78028000 ti: 78024000 task.ti: 78024000 [ 0.499955] EIP: 0060:[<79682de5>] EFLAGS: 00010097 CPU: 0 [ 0.500620] EIP is at mutex_lock_nested+0x135/0x2a0 [ 0.501145] EAX: 00200200 EBX: 78397434 ECX: 78397460 EDX: 78025e70 [ 0.501816] ESI: 00000246 EDI: 78028000 EBP: 78025e8c ESP: 78025e54 [ 0.502497] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 0.503076] CR0: 8005003b CR2: 00200200 CR3: 01b9d000 CR4: 00000690 [ 0.503773] Stack: [ 0.503998] 00000000 00000001 00000000 7925b5e8 78397460 7925b5e8 78397474 78397460 [ 0.504944] 00200200 11111111 78025e70 78397000 79ac9d74 00000001 78025ea0 7925b5e8 [ 0.505451] 79ac9d74 fffffffe 00000001 78025ebc 7925a3ff 7a251398 78025ec8 7925bf80 [ 0.505451] Call Trace: [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.505451] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.505451] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.505451] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.505451] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.505451] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.505451] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.505451] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.505451] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.505451] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.505451] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.505451] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.505451] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.505451] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.505451] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.505451] Code: 89 d8 e8 cf 9b 9f ff 8b 4f 04 8d 55 e4 89 d8 e8 72 9d 9f ff 8d 43 2c 89 c1 89 45 d8 8b 43 30 8d 55 e4 89 53 30 89 4d e4 89 45 e8 <89> 10 8b 55 dc 8b 45 e0 89 7d ec e8 db af 9f ff eb 11 90 31 c0 [ 0.505451] EIP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 SS:ESP 0068:78025e54 [ 0.505451] CR2: 0000000000200200 [ 0.505451] ---[ end trace ad8ac403ff8aef5e ]--- [ 0.505451] Kernel panic - not syncing: Fatal exception Fixes: 9ea927748c ("mac80211_hwsim: Register and bind to driver") Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Junjie Mao <eternal.n08@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>		2014-10-29 16:31:06 +01:00
..
accessibility	…
acpi	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2014-10-07 21:26:52 -04:00
amba	…
ata	ARM: SoC non-critical bug fixes for 3.18	2014-10-08 17:03:09 -04:00
atm	…
auxdisplay	…
base	Driver core patches for 3.18-rc1	2014-10-08 06:53:19 -04:00
bcma	bcma: use chipcommon node from DT for SoC GPIO chip	2014-09-30 13:17:14 -04:00
block	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-10-07 21:16:26 -04:00
bluetooth	Bluetooth: btusb: remove redundant lock variable	2014-09-30 14:13:29 +02:00
bus	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
cdrom	…
char	Char/Misc driver patches for 3.18-rc1	2014-10-08 06:55:41 -04:00
clk	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
clocksource	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
connector	…
cpufreq	ARM: SoC non-critical bug fixes for 3.18	2014-10-08 17:03:09 -04:00
cpuidle	ARM: SoC platform changes for 3.18	2014-10-08 17:13:04 -04:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2014-10-08 06:44:48 -04:00
dca	…
devfreq	…
dio	…
dma	dmaengine-3.17	2014-10-07 20:39:25 -04:00
dma-buf	…
edac	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
eisa	…
extcon	extcon: gpio: Fix code cleanup	2014-09-22 16:48:47 +09:00
firewire	…
firmware	Revert "efi/x86: efistub: Move shared dependencies to <asm/efi.h>"	2014-09-23 22:01:55 +01:00
fmc	…
gpio	ACPI and power management fixes for 3.17-rc7	2014-09-25 15:25:52 -07:00
gpu	Staging patches for 3.18-rc1	2014-10-08 06:50:18 -04:00
hid	Merge branches 'for-3.18/always-poll-quirk', 'for-3.18/logitech', 'for-3.18/picolcd', 'for-3.18/rmi', 'for-3.18/sony', 'for-3.18/uhid', 'for-3.18/upstream' and 'for-3.18/wacom' into for-linus	2014-10-06 23:34:40 +02:00
hsi	…
hv	Drivers: hv: vmbus: Enable interrupt driven flow control	2014-09-23 23:31:22 -07:00
hwmon	hwmon: (tmp103) Fix resource leak bug in tmp103 temperature sensor driver	2014-09-22 11:11:48 -07:00
hwspinlock	…
i2c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-10-07 21:16:26 -04:00
ide	…
idle	…
iio	staging: iio: fix up merge error	2014-09-22 07:54:10 -07:00
infiniband	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-10-08 21:40:54 -04:00
input	Merge branch 'next' into for-linus	2014-10-03 11:24:46 -07:00
iommu	Fixes and features for 3.18.	2014-10-08 05:27:39 -04:00
ipack	ipoctal: clear break interrupt as soon as it occurs	2014-09-23 23:26:42 -07:00
irqchip	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
isdn	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-10-08 21:40:54 -04:00
leds	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
lguest	…
macintosh	…
mailbox	mailbox/omap: add support for parsing dt devices	2014-09-11 11:39:14 -07:00
mcb	…
md	md/raid5: disable 'DISCARD' by default due to safety concerns.	2014-10-02 13:45:00 +10:00
media	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-10-07 21:16:26 -04:00
memory	…
memstick	…
message	SCSI for-linus on 20141007	2014-10-07 21:29:18 -04:00
mfd	Immutable branch between MFD and some ARM sub-arch maintainers.	2014-09-16 10:24:16 +08:00
misc	ARM: SoC cleanups for 3.18	2014-10-08 17:06:53 -04:00
mmc	…
mtd	Two trivial MTD updates for 3.17-rc4:	2014-09-06 12:12:09 -07:00
net	mac80211_hwsim: release driver when ieee80211_register_hw fails	2014-10-29 16:31:06 +01:00
nfc	Merge tag 'master-2014-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next	2014-10-05 21:34:39 -04:00
ntb	ntb: Add alignment check to meet hardware requirement	2014-09-14 00:10:38 -04:00
nubus	…
of	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-10-08 21:40:54 -04:00
oprofile	…
parisc	parisc: Fix serial console for machines with serial port on superio chip	2014-10-01 22:12:50 +02:00
parport	parport: parport_pc: Implement architecture and device check to cut off false-positives	2014-09-23 23:14:28 -07:00
pci	PCI updates for v3.17:	2014-09-24 09:46:29 -07:00
pcmcia	…
phy	phy: remove .owner field for drivers using module_platform_driver	2014-09-24 15:18:34 +05:30
pinctrl	This is the bulk of pin control changes for the v3.18	2014-10-07 20:56:28 -04:00
platform	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-10-07 21:16:26 -04:00
pnp	…
power	power: reset: driver for the Versatile syscon reboot	2014-09-26 00:25:59 +02:00
powercap	powercap / RAPL: change domain detection message	2014-09-03 01:29:00 +02:00
pps	…
ps3	…
ptp	…
pwm	Second batch of AT91 cleanup for 3.18:	2014-09-09 17:03:17 +02:00
rapidio	…
ras	…
regulator	Merge remote-tracking branches 'regulator/topic/tps65217', 'regulator/topic/tps65910' and 'regulator/topic/voltage-ev' into regulator-next	2014-09-30 13:50:31 +01:00
remoteproc	…
reset	…
rpmsg	…
rtc	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
s390	net: better IFF_XMIT_DST_RELEASE support	2014-10-07 13:22:11 -04:00
sbus	…
scsi	SCSI for-linus on 20141007	2014-10-07 21:29:18 -04:00
sfi	…
sh	…
sn	…
soc	ARM: SoC driver updates for 3.18	2014-10-08 17:37:16 -04:00
spi	Merge remote-tracking branch 'spi/topic/xilinx' into spi-next	2014-10-03 16:33:44 +01:00
spmi	…
ssb	…
staging	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-10-08 21:40:54 -04:00
target	iscsi-target: avoid NULL pointer in iscsi_copy_param_list failure	2014-09-17 13:44:01 -07:00
tc	…
thermal	thermal: Remove ARCH_KIRKWOOD dependency	2014-09-09 14:39:21 +00:00
thunderbolt	…
tty	TTY/Serial driver patches for 3.18-rc1	2014-10-08 06:52:11 -04:00
uio	…
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2014-10-08 21:40:54 -04:00
uwb	uwb: add an ASIE sysfs attribute to uwb_rc devices	2014-09-23 22:05:26 -07:00
vfio	…
vhost	…
video	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-10-07 21:16:26 -04:00
virt	…
virtio	virtio_ring: unify direct/indirect code paths.	2014-09-13 12:52:35 -04:00
vlynq	…
vme	…
w1	…
watchdog	watchdog: Remove ARCH_KIRKWOOD dependency	2014-09-09 14:40:17 +00:00
xen	xen: bug fixes for 3.17-rc4	2014-09-11 16:52:29 -07:00
zorro	…
Kconfig	soc: ti: add Keystone Navigator QMSS driver	2014-09-24 09:49:14 -04:00
Makefile	…