On Thu, 25 Jan 2024, wangxiaoming321 <xiaoming.wang@xxxxxxxxx> wrote:
> In the call stack xe_device_probe -> xe_display_init_nommio -> intel_power_domains_init
> Power_domains hasn't been cleaned up if return error,
> which has do the clean in i915_driver_late_release call from i915_driver_probe.
This has nothing to do with i915_*.
If intel_power_domains_init() returns an error, it should have cleaned
up after itself, not force its caller to do that. If there's an issue,
please fix it in intel_power_domains_init().
BR,
Jani.
>
> unreferenced object 0xffff88811150ee00 (size 512):
> comm "systemd-udevd", pid 506, jiffies 4294674198 (age 3605.560s)
> hex dump (first 32 bytes):
> 10 b4 9d a0 ff ff ff ff ff ff ff ff ff ff ff ff ................
> ff ff ff ff ff ff ff ff 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff8134b901>] __kmem_cache_alloc_node+0x1c1/0x2b0
> [<ffffffff812c98b2>] __kmalloc+0x52/0x150
> [<ffffffffa08b0033>] __set_power_wells+0xc3/0x360 [xe]
> [<ffffffffa08562fc>] xe_display_init_nommio+0x4c/0x70 [xe]
> [<ffffffffa07f0d1c>] xe_device_probe+0x3c/0x5a0 [xe]
> [<ffffffffa082e48f>] xe_pci_probe+0x33f/0x5a0 [xe]
> [<ffffffff817f2187>] local_pci_probe+0x47/0xa0
> [<ffffffff817f3db3>] pci_device_probe+0xc3/0x1f0
> [<ffffffff8192f2a2>] really_probe+0x1a2/0x410
> [<ffffffff8192f598>] __driver_probe_device+0x78/0x160
> [<ffffffff8192f6ae>] driver_probe_device+0x1e/0x90
> [<ffffffff8192f92a>] __driver_attach+0xda/0x1d0
> [<ffffffff8192c95c>] bus_for_each_dev+0x7c/0xd0
> [<ffffffff8192e159>] bus_add_driver+0x119/0x220
> [<ffffffff81930d00>] driver_register+0x60/0x120
> [<ffffffffa05e50a0>] 0xffffffffa05e50a0
>
> Signed-off-by: wangxiaoming321 <xiaoming.wang@xxxxxxxxx>
> ---
> drivers/gpu/drm/xe/xe_display.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/xe/xe_display.c b/drivers/gpu/drm/xe/xe_display.c
> index 74391d9b11ae..2725afba4afb 100644
> --- a/drivers/gpu/drm/xe/xe_display.c
> +++ b/drivers/gpu/drm/xe/xe_display.c
> @@ -146,8 +146,10 @@ int xe_display_init_nommio(struct xe_device *xe)
> intel_detect_pch(xe);
>
> err = intel_power_domains_init(xe);
> - if (err)
> + if (err) {
> + intel_power_domains_cleanup(xe);
> return err;
> + }
>
> return drmm_add_action_or_reset(&xe->drm, xe_display_fini_nommio, xe);
> }
--
Jani Nikula, Intel
