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gpu: nvgpu: fix ecc counter free

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ECC counter structures are freed without removing the node from the
stats_list. This can lead to invalid access due to dangling pointers.

Update the ecc counter free logic to set them to NULL upon free, to
remove them from stats_list and free them by validation.

Also updated some of the ecc init paths where error was not propa-
gated to callers and full ecc counters deallocation was not done.

Now, calling unit ecc_free from any context (with counters alloc-
ated or not) is harmless as requisite checks are in place.

bug 3326612
bug 3345977

Change-Id: I05eb6ed226cff9197ad37776912da9dcb7e0716d
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2565264
Tested-by: Ashish Mhetre <amhetre@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Sagar Kamble
2021-06-17 11:34:36 +05:30
committed by mobile promotions
parent 2887d06e3b
commit 40064ef1ec
33 changed files with 546 additions and 218 deletions
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2
drivers/gpu/nvgpu/hal/init/hal_tu104.c
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@@ -368,6 +368,8 @@ static const struct gops_gr_ecc tu104_ops_gr_ecc = {
.detect = NULL,
.gpc_tpc_ecc_init = gv11b_gr_gpc_tpc_ecc_init,
.fecs_ecc_init = gv11b_gr_fecs_ecc_init,
.gpc_tpc_ecc_deinit = gv11b_gr_gpc_tpc_ecc_deinit,
.fecs_ecc_deinit = gv11b_gr_fecs_ecc_deinit,
};
static const struct gops_gr_ctxsw_prog tu104_ops_gr_ctxsw_prog = {