From 81d4b970684554dbd8faff90fbcd600b86847a68 Mon Sep 17 00:00:00 2001 From: Srinivasan Shanmugam Date: Fri, 5 Jan 2024 11:27:48 +0530 Subject: [PATCH] drm/amdkfd: Fix variable dereferenced before NULL check in 'kfd_dbg_trap_device_snapshot()' MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Fixes the below: drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_debug.c:1024 kfd_dbg_trap_device_snapshot() warn: variable dereferenced before check 'entry_size' (see line 1021) Cc: Felix Kuehling Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdkfd/kfd_debug.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c index 9ec750666382f..d889e3545120a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c @@ -1018,12 +1018,14 @@ int kfd_dbg_trap_device_snapshot(struct kfd_process *target, uint32_t *entry_size) { struct kfd_dbg_device_info_entry device_info; - uint32_t tmp_entry_size = *entry_size, tmp_num_devices; + uint32_t tmp_entry_size, tmp_num_devices; int i, r = 0; if (!(target && user_info && number_of_device_infos && entry_size)) return -EINVAL; + tmp_entry_size = *entry_size; + tmp_num_devices = min_t(size_t, *number_of_device_infos, target->n_pdds); *number_of_device_infos = target->n_pdds; *entry_size = min_t(size_t, *entry_size, sizeof(device_info)); -- 2.30.2