forked from Minki/linux
e47301b06d
Fix the below Oops when trying to modprobe wlcore_spi. The oops occurs because the wl1271_power_{off,on}() function doesn't check the power() function pointer. [ 23.401447] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 23.409954] pgd = c0004000 [ 23.412922] [00000000] *pgd=00000000 [ 23.416693] Internal error: Oops: 80000007 [#1] SMP ARM [ 23.422168] Modules linked in: wl12xx wlcore mac80211 cfg80211 musb_dsps musb_hdrc usbcore usb_common snd_soc_simple_card evdev joydev omap_rng wlcore_spi snd_soc_tlv320aic23_i2c rng_core snd_soc_tlv320aic23 c_can_platform c_can can_dev snd_soc_davinci_mcasp snd_soc_edma snd_soc_omap omap_wdt musb_am335x cpufreq_dt thermal_sys hwmon [ 23.453253] CPU: 0 PID: 36 Comm: kworker/0:2 Not tainted 4.2.0-00002-g951efee-dirty #233 [ 23.461720] Hardware name: Generic AM33XX (Flattened Device Tree) [ 23.468123] Workqueue: events request_firmware_work_func [ 23.473690] task: de32efc0 ti: de4ee000 task.ti: de4ee000 [ 23.479341] PC is at 0x0 [ 23.482112] LR is at wl12xx_set_power_on+0x28/0x124 [wlcore] [ 23.488074] pc : [<00000000>] lr : [<bf2581f0>] psr: 60000013 [ 23.488074] sp : de4efe50 ip : 00000002 fp : 00000000 [ 23.500162] r10: de7cdd00 r9 : dc848800 r8 : bf27af00 [ 23.505663] r7 : bf27a1a8 r6 : dcbd8a80 r5 : dce0e2e0 r4 : dce0d2e0 [ 23.512536] r3 : 00000000 r2 : 00000000 r1 : 00000001 r0 : dc848810 [ 23.519412] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 23.527109] Control: 10c5387d Table: 9cb78019 DAC: 00000015 [ 23.533160] Process kworker/0:2 (pid: 36, stack limit = 0xde4ee218) [ 23.539760] Stack: (0xde4efe50 to 0xde4f0000) [...] [ 23.665030] [<bf2581f0>] (wl12xx_set_power_on [wlcore]) from [<bf25f7ac>] (wlcore_nvs_cb+0x118/0xa4c [wlcore]) [ 23.675604] [<bf25f7ac>] (wlcore_nvs_cb [wlcore]) from [<c04387ec>] (request_firmware_work_func+0x30/0x58) [ 23.685784] [<c04387ec>] (request_firmware_work_func) from [<c0058e2c>] (process_one_work+0x1b4/0x4b4) [ 23.695591] [<c0058e2c>] (process_one_work) from [<c0059168>] (worker_thread+0x3c/0x4a4) [ 23.704124] [<c0059168>] (worker_thread) from [<c005ee68>] (kthread+0xd4/0xf0) [ 23.711747] [<c005ee68>] (kthread) from [<c000f598>] (ret_from_fork+0x14/0x3c) [ 23.719357] Code: bad PC value [ 23.722760] ---[ end trace 981be8510db9b3a9 ]--- Prevent oops by validationg power() pointer value before calling the function. Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il> Cc: stable@vger.kernel.org Acked-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> |
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.. | ||
appletalk | ||
arcnet | ||
bonding | ||
caif | ||
can | ||
cris | ||
dsa | ||
ethernet | ||
fddi | ||
fjes | ||
hamradio | ||
hippi | ||
hyperv | ||
ieee802154 | ||
ipvlan | ||
irda | ||
phy | ||
plip | ||
ppp | ||
slip | ||
team | ||
usb | ||
vmxnet3 | ||
wan | ||
wimax | ||
wireless | ||
xen-netback | ||
dummy.c | ||
eql.c | ||
geneve.c | ||
ifb.c | ||
Kconfig | ||
LICENSE.SRC | ||
loopback.c | ||
macvlan.c | ||
macvtap.c | ||
Makefile | ||
mdio.c | ||
mii.c | ||
netconsole.c | ||
nlmon.c | ||
ntb_netdev.c | ||
rionet.c | ||
sb1000.c | ||
Space.c | ||
sungem_phy.c | ||
tun.c | ||
veth.c | ||
virtio_net.c | ||
vrf.c | ||
vxlan.c | ||
xen-netfront.c |