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Groups > linux.kernel > #1627034
| From | Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 3.18 019/124] drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces |
| Date | 2017-04-20 08:40 +0200 |
| Message-ID | <tydV0-5tf-35@gated-at.bofh.it> (permalink) |
| References | <tydUZ-5tf-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Thomas Hellstrom <thellstrom@vmware.com>
commit fe25deb7737ce6c0879ccf79c99fa1221d428bf2 upstream.
Previously, when a surface was opened using a legacy (non prime) handle,
it was verified to have been created by a client in the same master realm.
Relax this so that opening is also allowed recursively if the client
already has the surface open.
This works around a regression in svga mesa where opening of a shared
surface is used recursively to obtain surface information.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/ttm/ttm_object.c | 10 +++++++---
drivers/gpu/drm/vmwgfx/vmwgfx_fence.c | 6 ++----
drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 4 ++--
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 22 +++++++++-------------
include/drm/ttm/ttm_object.h | 5 ++++-
5 files changed, 24 insertions(+), 23 deletions(-)
--- a/drivers/gpu/drm/ttm/ttm_object.c
+++ b/drivers/gpu/drm/ttm/ttm_object.c
@@ -179,7 +179,7 @@ int ttm_base_object_init(struct ttm_obje
if (unlikely(ret != 0))
goto out_err0;
- ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
+ ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, false);
if (unlikely(ret != 0))
goto out_err1;
@@ -318,7 +318,8 @@ EXPORT_SYMBOL(ttm_ref_object_exists);
int ttm_ref_object_add(struct ttm_object_file *tfile,
struct ttm_base_object *base,
- enum ttm_ref_type ref_type, bool *existed)
+ enum ttm_ref_type ref_type, bool *existed,
+ bool require_existed)
{
struct drm_open_hash *ht = &tfile->ref_hash[ref_type];
struct ttm_ref_object *ref;
@@ -345,6 +346,9 @@ int ttm_ref_object_add(struct ttm_object
}
rcu_read_unlock();
+ if (require_existed)
+ return -EPERM;
+
ret = ttm_mem_global_alloc(mem_glob, sizeof(*ref),
false, false);
if (unlikely(ret != 0))
@@ -635,7 +639,7 @@ int ttm_prime_fd_to_handle(struct ttm_ob
prime = (struct ttm_prime_object *) dma_buf->priv;
base = &prime->base;
*handle = base->hash.key;
- ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
+ ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL, false);
dma_buf_put(dma_buf);
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
@@ -1144,10 +1144,8 @@ int vmw_fence_event_ioctl(struct drm_dev
(void) vmw_fence_obj_reference(fence);
if (user_fence_rep != NULL) {
- bool existed;
-
- ret = ttm_ref_object_add(tfile, base,
- TTM_REF_USAGE, &existed);
+ ret = ttm_ref_object_add(vmw_fp->tfile, base,
+ TTM_REF_USAGE, NULL, false);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to reference a fence "
"object.\n");
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c
@@ -588,7 +588,7 @@ static int vmw_user_dmabuf_synccpu_grab(
return ret;
ret = ttm_ref_object_add(tfile, &user_bo->prime.base,
- TTM_REF_SYNCCPU_WRITE, &existed);
+ TTM_REF_SYNCCPU_WRITE, &existed, false);
if (ret != 0 || existed)
ttm_bo_synccpu_write_release(&user_bo->dma.base);
@@ -764,7 +764,7 @@ int vmw_user_dmabuf_reference(struct ttm
*handle = user_bo->prime.base.hash.key;
return ttm_ref_object_add(tfile, &user_bo->prime.base,
- TTM_REF_USAGE, NULL);
+ TTM_REF_USAGE, NULL, false);
}
/*
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -895,17 +895,16 @@ vmw_surface_handle_reference(struct vmw_
uint32_t handle;
struct ttm_base_object *base;
int ret;
+ bool require_exist = false;
if (handle_type == DRM_VMW_HANDLE_PRIME) {
ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
if (unlikely(ret != 0))
return ret;
} else {
- if (unlikely(drm_is_render_client(file_priv))) {
- DRM_ERROR("Render client refused legacy "
- "surface reference.\n");
- return -EACCES;
- }
+ if (unlikely(drm_is_render_client(file_priv)))
+ require_exist = true;
+
handle = u_handle;
}
@@ -927,17 +926,14 @@ vmw_surface_handle_reference(struct vmw_
/*
* Make sure the surface creator has the same
- * authenticating master.
+ * authenticating master, or is already registered with us.
*/
if (drm_is_primary_client(file_priv) &&
- user_srf->master != file_priv->master) {
- DRM_ERROR("Trying to reference surface outside of"
- " master domain.\n");
- ret = -EACCES;
- goto out_bad_resource;
- }
+ user_srf->master != file_priv->master)
+ require_exist = true;
- ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
+ ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL,
+ require_exist);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a surface.\n");
goto out_bad_resource;
--- a/include/drm/ttm/ttm_object.h
+++ b/include/drm/ttm/ttm_object.h
@@ -229,6 +229,8 @@ extern void ttm_base_object_unref(struct
* @ref_type: The type of reference.
* @existed: Upon completion, indicates that an identical reference object
* already existed, and the refcount was upped on that object instead.
+ * @require_existed: Fail with -EPERM if an identical ref object didn't
+ * already exist.
*
* Checks that the base object is shareable and adds a ref object to it.
*
@@ -243,7 +245,8 @@ extern void ttm_base_object_unref(struct
*/
extern int ttm_ref_object_add(struct ttm_object_file *tfile,
struct ttm_base_object *base,
- enum ttm_ref_type ref_type, bool *existed);
+ enum ttm_ref_type ref_type, bool *existed,
+ bool require_existed);
extern bool ttm_ref_object_exists(struct ttm_object_file *tfile,
struct ttm_base_object *base);
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[PATCH 3.18 000/124] 3.18.50-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 08:40 +0200
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[PATCH 3.18 055/124] rtc: tegra: Implement clock handling Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 08:40 +0200
[PATCH 3.18 019/124] drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 08:40 +0200
[PATCH 3.18 027/124] metag/ptrace: Reject partial NT_METAG_RPIPE writes Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 08:40 +0200
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[PATCH 3.18 032/124] Drivers: hv: balloon: dont crash when memory is added in non-sorted order Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 059/124] virtio-console: avoid DMA from stack Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 069/124] KVM: kvm_io_bus_unregister_dev() should never fail Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 041/124] powerpc/boot: Fix zImage TOC alignment Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 067/124] KVM: PPC: Book3S PR: Fix illegal opcode emulation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 093/124] uwb: hwa-rc: fix NULL-deref at probe Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 088/124] net: properly release sk_frag.page Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 076/124] ipv4: provide stronger user input validation in nl_fib_input() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
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[PATCH 3.18 066/124] net sched actions: decrement module reference count after table flush. Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 095/124] USB: usbtmc: add missing endpoint sanity check Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 056/124] mm: Tighten x86 /dev/mem with zeroing reads Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 061/124] rtl8150: Use heap buffers for all register access Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 096/124] iio: adc: ti_am335x_adc: fix fifo overrun recovery Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 090/124] socket, bpf: fix sk_filter use after free in sk_clone_lock Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 052/124] crypto: ahash - Fix EINPROGRESS notification callback Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 071/124] perf/core: Fix event inheritance on fork() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 072/124] md/raid1/10: fix potential deadlock Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 099/124] iommu/vt-d: Fix NULL pointer dereference in device_to_iommu Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 089/124] net: unix: properly re-increment inflight counter of GC discarded candidates Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 039/124] powerpc/mm: Add missing global TLB invalidate if cxl is active Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 038/124] ALSA: seq: Fix race during FIFO resize Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 051/124] powerpc: Disable HFSCR[TM] if TM is not supported Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 087/124] net: bcmgenet: Do not suspend PHY if Wake-on-LAN is enabled Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 091/124] tcp: initialize icsk_ack.lrcvtime at session start time Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:00 +0200
[PATCH 3.18 014/124] Revert "ARM: 8457/1: psci-smp is built only for SMP" Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 012/124] char: Drop bogus dependency of DEVPORT on !M68K Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 002/124] Input: xpad - add support for Razer Wildcat gamepad Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 053/124] [media] dvb-usb-v2: avoid use-after-free Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 023/124] mips/ptrace: Preserve previous registers for short regset write Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 022/124] c6x/ptrace: Remove useless PTRACE_SETREGSET implementation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 043/124] scsi: lpfc: Add shutdown method for kexec Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 017/124] drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 008/124] scsi: sr: Sanity check returned mode data Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 009/124] scsi: sd: Fix capacity calculation with 32-bit sector_t Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 049/124] tty/serial: atmel: fix race condition (TX+DMA) Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
Re: [PATCH 3.18 049/124] tty/serial: atmel: fix race condition (TX+DMA) Richard Genoud <richard.genoud@gmail.com> - 2017-04-20 09:50 +0200
Re: [PATCH 3.18 049/124] tty/serial: atmel: fix race condition (TX+DMA) Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 15:40 +0200
[PATCH 3.18 021/124] drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 028/124] s390/decompressor: fix initrd corruption caused by bss clear Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 015/124] kvm: fix page struct leak in handle_vmon Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 026/124] metag/ptrace: Provide default TXSTATUS for short NT_PRSTATUS Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 029/124] s390/uaccess: get_user() should zero on failure (again) Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 007/124] iscsi-target: Drop work-around for legacy GlobalSAN initiator Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 042/124] target/pscsi: Fix TYPE_TAPE + TYPE_MEDIMUM_CHANGER export Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 005/124] x86/vdso: Ensure vdso32_enabled gets set to valid values only Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 044/124] scsi: libiscsi: add lock around task lists to fix list corruption regression Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 020/124] drm/vmwgfx: Remove getparam error message Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 030/124] Reset TreeId to zero on SMB2 TREE_CONNECT Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 046/124] scsi: libsas: fix ata xfer length Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
[PATCH 3.18 018/124] drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 09:10 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Guenter Roeck <linux@roeck-us.net> - 2017-04-20 15:50 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 16:30 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-20 22:00 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Guenter Roeck <linux@roeck-us.net> - 2017-04-21 05:40 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-21 06:40 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Guenter Roeck <linux@roeck-us.net> - 2017-04-21 19:10 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-21 20:20 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-04-21 09:20 +0200
Re: [PATCH 3.18 000/124] 3.18.50-stable review Mark Brown <broonie@kernel.org> - 2017-04-21 12:20 +0200
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