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| author |   Michal Kazior <michal@plume.com> | 2019-02-11 10:29:27 +0100 |
|---|---|---|
| committer |   Jacek Anaszewski <jacek.anaszewski@gmail.com> | 2019-02-14 22:03:44 +0100 |
| commit | 5ddb0869bfc1bca6cfc592c74c64a026f936638c (patch) | |
| tree | ad600e28f853eb1ea69f3e4c8d2c5ee693897e18 /arch/s390/include/asm/pnet.h | |
| parent | leds: trigger: timer: Add initialization from Device Tree (diff) | |
| download | linux-dev-5ddb0869bfc1bca6cfc592c74c64a026f936638c.tar.xz linux-dev-5ddb0869bfc1bca6cfc592c74c64a026f936638c.zip | |
leds: lp55xx: fix null deref on firmware load failure
I've stumbled upon a kernel crash and the logs
pointed me towards the lp5562 driver:
> <4>[306013.841294] lp5562 0-0030: Direct firmware load for lp5562 failed with error -2
> <4>[306013.894990] lp5562 0-0030: Falling back to user helper
> ...
> <3>[306073.924886] lp5562 0-0030: firmware request failed
> <1>[306073.939456] Unable to handle kernel NULL pointer dereference at virtual address 00000000
> <4>[306074.251011] PC is at _raw_spin_lock+0x1c/0x58
> <4>[306074.255539] LR is at release_firmware+0x6c/0x138
> ...
After taking a look I noticed firmware_release()
could be called with either NULL or a dangling
pointer.
Fixes: 10c06d178df11 ("leds-lp55xx: support firmware interface")
Signed-off-by: Michal Kazior <michal@plume.com>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Diffstat (limited to 'arch/s390/include/asm/pnet.h')
0 files changed, 0 insertions, 0 deletions