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| author |   Anson Huang <Anson.Huang@nxp.com> | 2019-11-15 11:30:14 -0800 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-11-15 11:49:29 -0800 |
| commit | dffe969aa7abfd866bc86780762a6aafa196d286 (patch) | |
| tree | 022f56e91f3eff5a162591309bf1ee221bbee3b8 /drivers/input | |
| parent | Input: ili210x - optionally show calibrate sysfs attribute (diff) | |
| download | linux-dev-dffe969aa7abfd866bc86780762a6aafa196d286.tar.xz linux-dev-dffe969aa7abfd866bc86780762a6aafa196d286.zip | |
Input: imx_sc_key - correct SCU message structure to avoid stack corruption
The SCU message's data field used for receiving response data from SCU
should be 32-bit width, as SCU will send back 32-bit width data.
This solves kernel panic when CONFIG_CC_HAVE_STACKPROTECTOR_SYSREG is
enabled.
[ 1.950768] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted
[ 1.980607] Workqueue: events imx_sc_check_for_events
[ 1.985657] Call trace:
[ 1.988104] dump_backtrace+0x0/0x140
[ 1.991768] show_stack+0x14/0x20
[ 1.995090] dump_stack+0xb4/0xf8
[ 1.998407] panic+0x158/0x324
[ 2.001463] print_tainted+0x0/0xa8
[ 2.004950] imx_sc_check_for_events+0x18c/0x190
[ 2.009569] process_one_work+0x198/0x320
[ 2.013579] worker_thread+0x48/0x420
[ 2.017252] kthread+0xf0/0x120
[ 2.020394] ret_from_fork+0x10/0x18
[ 2.023977] SMP: stopping secondary CPUs
[ 2.027901] Kernel Offset: disabled
[ 2.031391] CPU features: 0x0002,2100600c
[ 2.035401] Memory Limit: none
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Fixes: 688f1dfb69b4 ("Input: keyboard - imx_sc: Add i.MX system controller key support")
Link: https://lore.kernel.org/r/1573730499-2224-1-git-send-email-Anson.Huang@nxp.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/keyboard/imx_sc_key.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/input/keyboard/imx_sc_key.c b/drivers/input/keyboard/imx_sc_key.c index dd57daa67e5f..53799527dc75 100644 --- a/drivers/input/keyboard/imx_sc_key.c +++ b/drivers/input/keyboard/imx_sc_key.c @@ -35,7 +35,7 @@ struct imx_key_drv_data { struct imx_sc_msg_key { struct imx_sc_rpc_msg hdr; - u8 state; + u32 state; }; static int imx_sc_key_notify(struct notifier_block *nb, |