This is a note to let you know that I've just added the patch titled Revert "drm/ttm: fix memleak in ttm_transfered_destroy" to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: revert-drm-ttm-fix-memleak-in-ttm_transfered_destroy.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From bfd043fac1e7eaa5b16b5368373593bf9cc92d12 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Date: Thu, 4 Nov 2021 09:35:57 +0100 Subject: Revert "drm/ttm: fix memleak in ttm_transfered_destroy" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> This reverts commit bd99782f3ca491879e8524c89b1c0f40071903bd which is commit 0db55f9a1bafbe3dac750ea669de9134922389b5 upstream. Seems that the older kernels can not handle this fix because, to quote Christian: The problem is this memory leak could potentially happen with 5.10 as wel, just much much much less likely. But my guess is that 5.10 is so buggy that when the leak does NOT happen we double free and obviously causing a crash. So it needs to be reverted. Link: https://lore.kernel.org/r/1a1cc125-9314-f569-a6c4-40fc4509a377@xxxxxxx Cc: Christian König <christian.koenig@xxxxxxx> Cc: Erhard F. <erhard_f@xxxxxxxxxxx> Cc: Erhard F. <erhard_f@xxxxxxxxxxx> Cc: Huang Rui <ray.huang@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/ttm/ttm_bo_util.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -463,7 +463,6 @@ static void ttm_transfered_destroy(struc struct ttm_transfer_obj *fbo; fbo = container_of(bo, struct ttm_transfer_obj, base); - dma_resv_fini(&fbo->base.base._resv); ttm_bo_put(fbo->bo); kfree(fbo); } Patches currently in stable-queue which might be from gregkh@xxxxxxxxxxxxxxxxxxx are queue-5.4/revert-usb-core-hcd-add-support-for-deferring-roothub.patch queue-5.4/sfc-fix-reading-non-legacy-supported-link-modes.patch queue-5.4/net-ethernet-microchip-lan743x-fix-skb-allocation-failure.patch queue-5.4/revert-xhci-set-hcd-flag-to-defer-primary-roothub-registration.patch queue-5.4/revert-drm-ttm-fix-memleak-in-ttm_transfered_destroy.patch queue-5.4/scsi-core-put-lld-module-refcnt-after-scsi-device-is-released.patch queue-5.4/media-firewire-firedtv-avc-fix-a-buffer-overflow-in-avc_ca_pmt.patch queue-5.4/vrf-revert-reset-skb-conntrack-connection.patch