Unverified Commit 0b22d093 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!4188 [sync] PR-4012: drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL 

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/4012 
 
PR sync from: Baogen Shang <baogen.shang@outlook.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/KNLAD6EDXJPWCFUEATI3SWNGGTNVF6ZH/ 
 
https://gitee.com/openeuler/kernel/issues/I8AS5P 
 
Link:https://gitee.com/openeuler/kernel/pulls/4188

 

Reviewed-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents e4668e3a f9589653

drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c

+6 −0
Original line number Diff line number Diff line
@@ -575,6 +575,9 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf, 
	ssize_t result = 0;

	int r;



	if (!adev->smc_rreg)

		return -EPERM;



	if (size & 0x3 || *pos & 0x3)

		return -EINVAL;
@@ -634,6 +637,9 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user * 
	ssize_t result = 0;

	int r;



	if (!adev->smc_wreg)

		return -EPERM;



	if (size & 0x3 || *pos & 0x3)

		return -EINVAL;