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Date: Fri, 14 Feb 2020 10:44:45 -0500 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Felix Kuehling <Felix.Kuehling@....com>, shaoyunl <shaoyun.liu@....com>, Alex Deucher <alexander.deucher@....com>, Sasha Levin <sashal@...nel.org>, amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org Subject: [PATCH AUTOSEL 5.5 293/542] drm/amdkfd: Fix permissions of hang_hws From: Felix Kuehling <Felix.Kuehling@....com> [ Upstream commit 2bdac179e217a0c0b548a8c60524977586621b19 ] Reading from /sys/kernel/debug/kfd/hang_hws would cause a kernel oops because we didn't implement a read callback. Set the permission to write-only to prevent that. Signed-off-by: Felix Kuehling <Felix.Kuehling@....com> Reviewed-by: shaoyunl <shaoyun.liu@....com> Signed-off-by: Alex Deucher <alexander.deucher@....com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c b/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c index 15c523027285c..511712c2e382d 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debugfs.c @@ -93,7 +93,7 @@ void kfd_debugfs_init(void) kfd_debugfs_hqds_by_device, &kfd_debugfs_fops); debugfs_create_file("rls", S_IFREG | 0444, debugfs_root, kfd_debugfs_rls_by_device, &kfd_debugfs_fops); - debugfs_create_file("hang_hws", S_IFREG | 0644, debugfs_root, + debugfs_create_file("hang_hws", S_IFREG | 0200, debugfs_root, NULL, &kfd_debugfs_hang_hws_fops); } -- 2.20.1
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