amd/amdkfd: fix a kfd_process ref leak

yifancom · smb49 · commit 8d0fc43b60fe · 2025-09-16T14:51:49.000+02:00
BugLink: https://bugs.launchpad.net/bugs/2121266 [ Upstream commit 90237b16ec1d7afa16e2173cc9a664377214cdd9 ] This patch is to fix a kfd_prcess ref leak. Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com> Reviewed-by: Philip Yang <Philip.Yang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Noah Wager <noah.wager@canonical.com> Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_events.c
@@ -1331,6 +1331,7 @@ void kfd_signal_poison_consumed_event(struct kfd_node *dev, u32 pasid)
 	user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);
 	if (unlikely(user_gpu_id == -EINVAL)) {
 		WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);
+		kfd_unref_process(p);
 		return;
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -1331,6 +1331,7 @@ void kfd_signal_poison_consumed_event(struct kfd_node *dev, u32 pasid)`
`1331`	`1331`	`user_gpu_id = kfd_process_get_user_gpu_id(p, dev->id);`
`1332`	`1332`	`if (unlikely(user_gpu_id == -EINVAL)) {`
`1333`	`1333`	`WARN_ONCE(1, "Could not get user_gpu_id from dev->id:%x\n", dev->id);`
	`1334`	`+ kfd_unref_process(p);`
`1334`	`1335`	`return;`
`1335`	`1336`	`}`
`1336`	`1337`