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| author | Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2015-08-03 14:57:30 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-13 09:07:41 -0700 |
| commit | 731fedc9a4c9192e0250e8615d2db08134749b3d (patch) | |
| tree | b836be889933bd2a7540e0b784d5e90ddaba2710 /net/lapb/lapb_timer.c | |
| parent | 0d2808f59028f624b18529bc445a1dcdcec56ae9 (diff) | |
HID: hid-input: Fix accessing freed memory during device disconnect
commit 0621809e37936e7c2b3eac9165cf2aad7f9189eb upstream.
During unbinding the driver was dereferencing a pointer to memory
already freed by power_supply_unregister().
Driver was freeing its internal description of battery through pointers
stored in power_supply structure. However, because the core owns the
power supply instance, after calling power_supply_unregister() this
memory is freed and the driver cannot access these members.
Fix this by storing the pointer to internal description of battery in a
local variable before calling power_supply_unregister(), so the pointer
remains valid.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reported-by: H.J. Lu <hjl.tools@gmail.com>
Fixes: 297d716f6260 ("power_supply: Change ownership from driver to core")
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions