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authorXiongfeng Wang <wangxiongfeng2@huawei.com>2019-04-26 10:16:36 +0800
committerWill Deacon <will.deacon@arm.com>2019-04-29 16:50:48 +0100
commit2f1d4e24d91b1f475f939685e19bb1e537031661 (patch)
tree16b3634234836c5d3b50d7bf83febc83ee519644 /drivers/firmware
parentf08cae2f28db24d95be5204046b60618d8de4ddc (diff)
downloadlinux-2f1d4e24d91b1f475f939685e19bb1e537031661.tar.bz2
firmware: arm_sdei: Prohibit probing in '_sdei_handler'
Functions called in '_sdei_handler' are needed to be marked as 'nokprobe'. Because these functions are called in NMI context and neither the arch-code's debug infrastructure nor kprobes core supports this. Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Reviewed-by: James Morse <james.morse@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/arm_sdei.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c
index e6376f985ef7..9cd70d1a5622 100644
--- a/drivers/firmware/arm_sdei.c
+++ b/drivers/firmware/arm_sdei.c
@@ -165,6 +165,7 @@ static int invoke_sdei_fn(unsigned long function_id, unsigned long arg0,
return err;
}
+NOKPROBE_SYMBOL(invoke_sdei_fn);
static struct sdei_event *sdei_event_find(u32 event_num)
{
@@ -879,6 +880,7 @@ static void sdei_smccc_smc(unsigned long function_id,
{
arm_smccc_smc(function_id, arg0, arg1, arg2, arg3, arg4, 0, 0, res);
}
+NOKPROBE_SYMBOL(sdei_smccc_smc);
static void sdei_smccc_hvc(unsigned long function_id,
unsigned long arg0, unsigned long arg1,
@@ -887,6 +889,7 @@ static void sdei_smccc_hvc(unsigned long function_id,
{
arm_smccc_hvc(function_id, arg0, arg1, arg2, arg3, arg4, 0, 0, res);
}
+NOKPROBE_SYMBOL(sdei_smccc_hvc);
int sdei_register_ghes(struct ghes *ghes, sdei_event_callback *normal_cb,
sdei_event_callback *critical_cb)