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| author | Xiongfeng Wang <wangxiongfeng2@huawei.com> | 2019-04-26 04:16:36 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2019-04-29 17:50:48 +0200 |
| commit | 2f1d4e24d91b1f475f939685e19bb1e537031661 (patch) | |
| tree | 16b3634234836c5d3b50d7bf83febc83ee519644 | |
| parent | arm64: mmap: Ensure file offset is treated as unsigned (diff) | |
| download | linux-2f1d4e24d91b1f475f939685e19bb1e537031661.tar.xz linux-2f1d4e24d91b1f475f939685e19bb1e537031661.zip | |
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>
| -rw-r--r-- | drivers/firmware/arm_sdei.c | 3 |
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) |