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amdkfd: process debug trap ioctl only on a primary context

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Set_debug_trap ioctl should work on a specific kfd_process
even when multiple contexts feature is implemented.

For consistency, this commit allow set_debug_trap ioctl only work on the
primary kfd process of a user space program

Signed-off-by: Zhu Lingshan <lingshan.zhu@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Zhu Lingshan
2025-10-13 15:58:31 +08:00
committed by Alex Deucher
parent 3ec1a42f5f
commit e3491fa3f3
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
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@@ -2931,6 +2931,12 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v
struct kfd_process_device *pdd = NULL;
int r = 0;
if (p->context_id != KFD_CONTEXT_ID_PRIMARY) {
pr_debug("Set debug trap ioctl can not be invoked on non-primary kfd process\n");
return -EOPNOTSUPP;
}
if (sched_policy == KFD_SCHED_POLICY_NO_HWS) {
pr_err("Debugging does not support sched_policy %i", sched_policy);
return -EINVAL;
@@ -2975,6 +2981,12 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v
goto out;
}
if (target->context_id != KFD_CONTEXT_ID_PRIMARY) {
pr_debug("Set debug trap ioctl not supported on non-primary kfd process\n");
r = -EOPNOTSUPP;
goto out;
}
/* Check if target is still PTRACED. */
rcu_read_lock();
if (target != p && args->op != KFD_IOC_DBG_TRAP_DISABLE