* [intel-linux-intel-lts:5.4/yocto 8/24] drivers/gpu/drm/i915/gvt/display.c:2137:21-23: ERROR: disp_path is NULL but dereferenced.
@ 2021-02-09 12:55 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-02-09 12:55 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 10391 bytes --]
CC: kbuild-all(a)lists.01.org
TO: Colin Xu <colin.xu@intel.com>
CC: "Qin, Chao" <chao.qin@intel.com>
CC: Hang Yuan <hang.yuan@intel.com>
tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto
head: 8bbfe55bfdb2905c35914605bc1b4a4404d86649
commit: 2521b097a48688b899e3db9cb855aa1ec59b02e8 [8/24] drm/i915/gvt: Rebase IDV 2.1 direct display to 5.4.x.
:::::: branch date: 8 months ago
:::::: commit date: 8 months ago
config: x86_64-randconfig-c002-20210209 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
"coccinelle warnings: (new ones prefixed by >>)"
>> drivers/gpu/drm/i915/gvt/display.c:2137:21-23: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2138:31-37: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2139:31-37: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2140:21-31: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2141:21-37: ERROR: disp_path is NULL but dereferenced.
--
>> drivers/gpu/drm/i915/gvt/display.c:1917:2-8: preceding lock on line 1908
--
>> drivers/gpu/drm/i915/gvt/display.c:1904:7-16: ERROR: invalid reference to the index variable of the iterator on line 1899
drivers/gpu/drm/i915/gvt/display.c:2119:39-48: ERROR: invalid reference to the index variable of the iterator on line 2114
drivers/gpu/drm/i915/gvt/display.c:2120:8-17: ERROR: invalid reference to the index variable of the iterator on line 2114
drivers/gpu/drm/i915/gvt/display.c:2121:9-18: ERROR: invalid reference to the index variable of the iterator on line 2114
drivers/gpu/drm/i915/gvt/display.c:1611:6-15: ERROR: invalid reference to the index variable of the iterator on line 1607
drivers/gpu/drm/i915/gvt/display.c:1798:6-15: ERROR: invalid reference to the index variable of the iterator on line 1794
drivers/gpu/drm/i915/gvt/display.c:1223:6-15: ERROR: invalid reference to the index variable of the iterator on line 1219
vim +2137 drivers/gpu/drm/i915/gvt/display.c
2521b097a48688 Colin Xu 2020-04-14 2071
2521b097a48688 Colin Xu 2020-04-14 2072 static void intel_gvt_switch_display_work(struct work_struct *w)
2521b097a48688 Colin Xu 2020-04-14 2073 {
2521b097a48688 Colin Xu 2020-04-14 2074 struct intel_gvt *gvt = container_of(w,
2521b097a48688 Colin Xu 2020-04-14 2075 struct intel_gvt, switch_display_work);
2521b097a48688 Colin Xu 2020-04-14 2076 struct intel_vgpu *vgpu, *old_v, *new_v;
2521b097a48688 Colin Xu 2020-04-14 2077 struct intel_vgpu_display_path *disp_path = NULL, *n;
2521b097a48688 Colin Xu 2020-04-14 2078 int id, old, new;
2521b097a48688 Colin Xu 2020-04-14 2079 u32 new_owner = 0;
2521b097a48688 Colin Xu 2020-04-14 2080 enum pipe pipe;
2521b097a48688 Colin Xu 2020-04-14 2081 enum port port;
2521b097a48688 Colin Xu 2020-04-14 2082 bool do_switch = false;
2521b097a48688 Colin Xu 2020-04-14 2083
2521b097a48688 Colin Xu 2020-04-14 2084 mutex_lock(&gvt->lock);
2521b097a48688 Colin Xu 2020-04-14 2085 mutex_lock(&gvt->sw_in_progress);
2521b097a48688 Colin Xu 2020-04-14 2086
2521b097a48688 Colin Xu 2020-04-14 2087 /* Switch base on port */
2521b097a48688 Colin Xu 2020-04-14 2088 for_each_pipe(gvt->dev_priv, pipe) {
2521b097a48688 Colin Xu 2020-04-14 2089 port = intel_gvt_port_from_pipe(gvt->dev_priv, pipe);
2521b097a48688 Colin Xu 2020-04-14 2090
2521b097a48688 Colin Xu 2020-04-14 2091 if (port == PORT_NONE)
2521b097a48688 Colin Xu 2020-04-14 2092 continue;
2521b097a48688 Colin Xu 2020-04-14 2093
2521b097a48688 Colin Xu 2020-04-14 2094 gvt_dbg_dpy("Check display switch on PIPE_%c, PORT_%c\n",
2521b097a48688 Colin Xu 2020-04-14 2095 pipe_name(pipe), port_name(port));
2521b097a48688 Colin Xu 2020-04-14 2096
2521b097a48688 Colin Xu 2020-04-14 2097 old = gvt->pipe_info[pipe].owner;
2521b097a48688 Colin Xu 2020-04-14 2098 new = (gvt->disp_owner >> port * 4) & 0xF;
2521b097a48688 Colin Xu 2020-04-14 2099
2521b097a48688 Colin Xu 2020-04-14 2100 old_v = NULL;
2521b097a48688 Colin Xu 2020-04-14 2101 new_v = NULL;
2521b097a48688 Colin Xu 2020-04-14 2102 do_switch = false;
2521b097a48688 Colin Xu 2020-04-14 2103 // Get old and new owners, either host or vGPU-x
2521b097a48688 Colin Xu 2020-04-14 2104 idr_for_each_entry((&(gvt)->vgpu_idr), vgpu, id) {
2521b097a48688 Colin Xu 2020-04-14 2105 if (old && id == old)
2521b097a48688 Colin Xu 2020-04-14 2106 old_v = vgpu;
2521b097a48688 Colin Xu 2020-04-14 2107 if (new && id == new)
2521b097a48688 Colin Xu 2020-04-14 2108 new_v = vgpu;
2521b097a48688 Colin Xu 2020-04-14 2109 }
2521b097a48688 Colin Xu 2020-04-14 2110
2521b097a48688 Colin Xu 2020-04-14 2111 if (new != old) {
2521b097a48688 Colin Xu 2020-04-14 2112 if (new_v) {
2521b097a48688 Colin Xu 2020-04-14 2113 disp_path = NULL;
2521b097a48688 Colin Xu 2020-04-14 2114 list_for_each_entry_safe(disp_path, n, &new_v->disp_cfg.path_list, list) {
2521b097a48688 Colin Xu 2020-04-14 2115 if (disp_path->p_pipe != INVALID_PIPE &&
2521b097a48688 Colin Xu 2020-04-14 2116 disp_path->p_port == port)
2521b097a48688 Colin Xu 2020-04-14 2117 break;
2521b097a48688 Colin Xu 2020-04-14 2118 }
2521b097a48688 Colin Xu 2020-04-14 2119 if (atomic_read(&new_v->active) && disp_path &&
2521b097a48688 Colin Xu 2020-04-14 2120 disp_path->foreground &&
2521b097a48688 Colin Xu 2020-04-14 2121 !disp_path->foreground_state) {
2521b097a48688 Colin Xu 2020-04-14 2122 do_switch = true;
2521b097a48688 Colin Xu 2020-04-14 2123 gvt_dbg_dpy("Switch display to vGPU-%d, path-%d, PIPE_%c, PORT_%c\n",
2521b097a48688 Colin Xu 2020-04-14 2124 new_v->id, disp_path->id,
2521b097a48688 Colin Xu 2020-04-14 2125 pipe_name(disp_path->p_pipe),
2521b097a48688 Colin Xu 2020-04-14 2126 port_name(disp_path->p_port));
2521b097a48688 Colin Xu 2020-04-14 2127 } else {
2521b097a48688 Colin Xu 2020-04-14 2128 // If can't switch to new vGPU,
2521b097a48688 Colin Xu 2020-04-14 2129 // maintain old owner.
2521b097a48688 Colin Xu 2020-04-14 2130 new_owner = gvt->disp_owner;
2521b097a48688 Colin Xu 2020-04-14 2131 new_owner &= ~(0xF << port * 4);
2521b097a48688 Colin Xu 2020-04-14 2132 new_owner |= (old << port * 4);
2521b097a48688 Colin Xu 2020-04-14 2133 gvt->disp_owner = new_owner;
2521b097a48688 Colin Xu 2020-04-14 2134 do_switch = false;
2521b097a48688 Colin Xu 2020-04-14 2135 gvt_dbg_dpy("Can't switch display to vGPU-%d active-%d, path-%d, PIPE_%c, PORT_%c, foreground-%d, foreground_state-%d\n",
2521b097a48688 Colin Xu 2020-04-14 2136 new_v->id, atomic_read(&new_v->active),
2521b097a48688 Colin Xu 2020-04-14 @2137 disp_path->id,
2521b097a48688 Colin Xu 2020-04-14 2138 pipe_name(disp_path->p_pipe),
2521b097a48688 Colin Xu 2020-04-14 2139 port_name(disp_path->p_port),
2521b097a48688 Colin Xu 2020-04-14 2140 disp_path->foreground,
2521b097a48688 Colin Xu 2020-04-14 2141 disp_path->foreground_state);
2521b097a48688 Colin Xu 2020-04-14 2142 }
2521b097a48688 Colin Xu 2020-04-14 2143 } else {
2521b097a48688 Colin Xu 2020-04-14 2144 // Switch to host is always expected possible
2521b097a48688 Colin Xu 2020-04-14 2145 do_switch = true;
2521b097a48688 Colin Xu 2020-04-14 2146 gvt_dbg_dpy("Switch display to host\n");
2521b097a48688 Colin Xu 2020-04-14 2147 }
2521b097a48688 Colin Xu 2020-04-14 2148 } else {
2521b097a48688 Colin Xu 2020-04-14 2149 do_switch = false;
2521b097a48688 Colin Xu 2020-04-14 2150 gvt_dbg_dpy("Skip switch display due to unchanged owner\n");
2521b097a48688 Colin Xu 2020-04-14 2151 }
2521b097a48688 Colin Xu 2020-04-14 2152
2521b097a48688 Colin Xu 2020-04-14 2153 if (do_switch && !prepare_for_switch_display(gvt, pipe)) {
2521b097a48688 Colin Xu 2020-04-14 2154 intel_gvt_switch_display_pipe(gvt, pipe, old_v, new_v);
2521b097a48688 Colin Xu 2020-04-14 2155 if (old_v && new_v)
2521b097a48688 Colin Xu 2020-04-14 2156 gvt_dbg_dpy("Change PIPE_%c PORT_%c owner from "
2521b097a48688 Colin Xu 2020-04-14 2157 "vGPU-%d to vGPU-%d\n",
2521b097a48688 Colin Xu 2020-04-14 2158 pipe_name(pipe), port_name(port),
2521b097a48688 Colin Xu 2020-04-14 2159 old_v->id, new_v->id);
2521b097a48688 Colin Xu 2020-04-14 2160 else if (old_v && !new_v)
2521b097a48688 Colin Xu 2020-04-14 2161 gvt_dbg_dpy("Change PIPE_%c PORT_%c owner from "
2521b097a48688 Colin Xu 2020-04-14 2162 "vGPU-%d to host\n",
2521b097a48688 Colin Xu 2020-04-14 2163 pipe_name(pipe), port_name(port),
2521b097a48688 Colin Xu 2020-04-14 2164 old_v->id);
2521b097a48688 Colin Xu 2020-04-14 2165 else if (!old_v && new_v)
2521b097a48688 Colin Xu 2020-04-14 2166 gvt_dbg_dpy("Change PIPE_%c PORT_%c owner from "
2521b097a48688 Colin Xu 2020-04-14 2167 "host to vGPU-%d\n",
2521b097a48688 Colin Xu 2020-04-14 2168 pipe_name(pipe), port_name(port),
2521b097a48688 Colin Xu 2020-04-14 2169 new_v->id);
2521b097a48688 Colin Xu 2020-04-14 2170 else
2521b097a48688 Colin Xu 2020-04-14 2171 gvt_dbg_dpy("Unexpected change PIPE_%c PORT_%c "
2521b097a48688 Colin Xu 2020-04-14 2172 "owner from host to host\n",
2521b097a48688 Colin Xu 2020-04-14 2173 pipe_name(pipe), port_name(port));
2521b097a48688 Colin Xu 2020-04-14 2174 }
2521b097a48688 Colin Xu 2020-04-14 2175 }
2521b097a48688 Colin Xu 2020-04-14 2176
2521b097a48688 Colin Xu 2020-04-14 2177 mutex_unlock(&gvt->sw_in_progress);
2521b097a48688 Colin Xu 2020-04-14 2178 mutex_unlock(&gvt->lock);
2521b097a48688 Colin Xu 2020-04-14 2179 }
2521b097a48688 Colin Xu 2020-04-14 2180
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 35036 bytes --]
^ permalink raw reply [flat|nested] 2+ messages in thread
* [intel-linux-intel-lts:5.4/yocto 8/24] drivers/gpu/drm/i915/gvt/display.c:2137:21-23: ERROR: disp_path is NULL but dereferenced.
@ 2021-04-12 18:43 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-04-12 18:43 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 10496 bytes --]
CC: kbuild-all(a)lists.01.org
TO: Colin Xu <colin.xu@intel.com>
CC: "Qin, Chao" <chao.qin@intel.com>
CC: Hang Yuan <hang.yuan@intel.com>
tree: https://github.com/intel/linux-intel-lts.git 5.4/yocto
head: 8bbfe55bfdb2905c35914605bc1b4a4404d86649
commit: 2521b097a48688b899e3db9cb855aa1ec59b02e8 [8/24] drm/i915/gvt: Rebase IDV 2.1 direct display to 5.4.x.
:::::: branch date: 10 months ago
:::::: commit date: 10 months ago
config: x86_64-randconfig-c002-20210412 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
cocci warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/i915/gvt/display.c:2137:21-23: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2138:31-37: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2139:31-37: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2140:21-31: ERROR: disp_path is NULL but dereferenced.
drivers/gpu/drm/i915/gvt/display.c:2141:21-37: ERROR: disp_path is NULL but dereferenced.
--
>> drivers/gpu/drm/i915/gvt/display.c:1917:2-8: preceding lock on line 1908
--
>> drivers/gpu/drm/i915/gvt/display.c:1904:7-16: ERROR: invalid reference to the index variable of the iterator on line 1899
drivers/gpu/drm/i915/gvt/display.c:2119:39-48: ERROR: invalid reference to the index variable of the iterator on line 2114
drivers/gpu/drm/i915/gvt/display.c:2120:8-17: ERROR: invalid reference to the index variable of the iterator on line 2114
drivers/gpu/drm/i915/gvt/display.c:2121:9-18: ERROR: invalid reference to the index variable of the iterator on line 2114
drivers/gpu/drm/i915/gvt/display.c:1611:6-15: ERROR: invalid reference to the index variable of the iterator on line 1607
drivers/gpu/drm/i915/gvt/display.c:1798:6-15: ERROR: invalid reference to the index variable of the iterator on line 1794
drivers/gpu/drm/i915/gvt/display.c:1223:6-15: ERROR: invalid reference to the index variable of the iterator on line 1219
vim +2137 drivers/gpu/drm/i915/gvt/display.c
2521b097a48688b Colin Xu 2020-04-14 2071
2521b097a48688b Colin Xu 2020-04-14 2072 static void intel_gvt_switch_display_work(struct work_struct *w)
2521b097a48688b Colin Xu 2020-04-14 2073 {
2521b097a48688b Colin Xu 2020-04-14 2074 struct intel_gvt *gvt = container_of(w,
2521b097a48688b Colin Xu 2020-04-14 2075 struct intel_gvt, switch_display_work);
2521b097a48688b Colin Xu 2020-04-14 2076 struct intel_vgpu *vgpu, *old_v, *new_v;
2521b097a48688b Colin Xu 2020-04-14 2077 struct intel_vgpu_display_path *disp_path = NULL, *n;
2521b097a48688b Colin Xu 2020-04-14 2078 int id, old, new;
2521b097a48688b Colin Xu 2020-04-14 2079 u32 new_owner = 0;
2521b097a48688b Colin Xu 2020-04-14 2080 enum pipe pipe;
2521b097a48688b Colin Xu 2020-04-14 2081 enum port port;
2521b097a48688b Colin Xu 2020-04-14 2082 bool do_switch = false;
2521b097a48688b Colin Xu 2020-04-14 2083
2521b097a48688b Colin Xu 2020-04-14 2084 mutex_lock(&gvt->lock);
2521b097a48688b Colin Xu 2020-04-14 2085 mutex_lock(&gvt->sw_in_progress);
2521b097a48688b Colin Xu 2020-04-14 2086
2521b097a48688b Colin Xu 2020-04-14 2087 /* Switch base on port */
2521b097a48688b Colin Xu 2020-04-14 2088 for_each_pipe(gvt->dev_priv, pipe) {
2521b097a48688b Colin Xu 2020-04-14 2089 port = intel_gvt_port_from_pipe(gvt->dev_priv, pipe);
2521b097a48688b Colin Xu 2020-04-14 2090
2521b097a48688b Colin Xu 2020-04-14 2091 if (port == PORT_NONE)
2521b097a48688b Colin Xu 2020-04-14 2092 continue;
2521b097a48688b Colin Xu 2020-04-14 2093
2521b097a48688b Colin Xu 2020-04-14 2094 gvt_dbg_dpy("Check display switch on PIPE_%c, PORT_%c\n",
2521b097a48688b Colin Xu 2020-04-14 2095 pipe_name(pipe), port_name(port));
2521b097a48688b Colin Xu 2020-04-14 2096
2521b097a48688b Colin Xu 2020-04-14 2097 old = gvt->pipe_info[pipe].owner;
2521b097a48688b Colin Xu 2020-04-14 2098 new = (gvt->disp_owner >> port * 4) & 0xF;
2521b097a48688b Colin Xu 2020-04-14 2099
2521b097a48688b Colin Xu 2020-04-14 2100 old_v = NULL;
2521b097a48688b Colin Xu 2020-04-14 2101 new_v = NULL;
2521b097a48688b Colin Xu 2020-04-14 2102 do_switch = false;
2521b097a48688b Colin Xu 2020-04-14 2103 // Get old and new owners, either host or vGPU-x
2521b097a48688b Colin Xu 2020-04-14 2104 idr_for_each_entry((&(gvt)->vgpu_idr), vgpu, id) {
2521b097a48688b Colin Xu 2020-04-14 2105 if (old && id == old)
2521b097a48688b Colin Xu 2020-04-14 2106 old_v = vgpu;
2521b097a48688b Colin Xu 2020-04-14 2107 if (new && id == new)
2521b097a48688b Colin Xu 2020-04-14 2108 new_v = vgpu;
2521b097a48688b Colin Xu 2020-04-14 2109 }
2521b097a48688b Colin Xu 2020-04-14 2110
2521b097a48688b Colin Xu 2020-04-14 2111 if (new != old) {
2521b097a48688b Colin Xu 2020-04-14 2112 if (new_v) {
2521b097a48688b Colin Xu 2020-04-14 2113 disp_path = NULL;
2521b097a48688b Colin Xu 2020-04-14 2114 list_for_each_entry_safe(disp_path, n, &new_v->disp_cfg.path_list, list) {
2521b097a48688b Colin Xu 2020-04-14 2115 if (disp_path->p_pipe != INVALID_PIPE &&
2521b097a48688b Colin Xu 2020-04-14 2116 disp_path->p_port == port)
2521b097a48688b Colin Xu 2020-04-14 2117 break;
2521b097a48688b Colin Xu 2020-04-14 2118 }
2521b097a48688b Colin Xu 2020-04-14 2119 if (atomic_read(&new_v->active) && disp_path &&
2521b097a48688b Colin Xu 2020-04-14 2120 disp_path->foreground &&
2521b097a48688b Colin Xu 2020-04-14 2121 !disp_path->foreground_state) {
2521b097a48688b Colin Xu 2020-04-14 2122 do_switch = true;
2521b097a48688b Colin Xu 2020-04-14 2123 gvt_dbg_dpy("Switch display to vGPU-%d, path-%d, PIPE_%c, PORT_%c\n",
2521b097a48688b Colin Xu 2020-04-14 2124 new_v->id, disp_path->id,
2521b097a48688b Colin Xu 2020-04-14 2125 pipe_name(disp_path->p_pipe),
2521b097a48688b Colin Xu 2020-04-14 2126 port_name(disp_path->p_port));
2521b097a48688b Colin Xu 2020-04-14 2127 } else {
2521b097a48688b Colin Xu 2020-04-14 2128 // If can't switch to new vGPU,
2521b097a48688b Colin Xu 2020-04-14 2129 // maintain old owner.
2521b097a48688b Colin Xu 2020-04-14 2130 new_owner = gvt->disp_owner;
2521b097a48688b Colin Xu 2020-04-14 2131 new_owner &= ~(0xF << port * 4);
2521b097a48688b Colin Xu 2020-04-14 2132 new_owner |= (old << port * 4);
2521b097a48688b Colin Xu 2020-04-14 2133 gvt->disp_owner = new_owner;
2521b097a48688b Colin Xu 2020-04-14 2134 do_switch = false;
2521b097a48688b Colin Xu 2020-04-14 2135 gvt_dbg_dpy("Can't switch display to vGPU-%d active-%d, path-%d, PIPE_%c, PORT_%c, foreground-%d, foreground_state-%d\n",
2521b097a48688b Colin Xu 2020-04-14 2136 new_v->id, atomic_read(&new_v->active),
2521b097a48688b Colin Xu 2020-04-14 @2137 disp_path->id,
2521b097a48688b Colin Xu 2020-04-14 2138 pipe_name(disp_path->p_pipe),
2521b097a48688b Colin Xu 2020-04-14 2139 port_name(disp_path->p_port),
2521b097a48688b Colin Xu 2020-04-14 2140 disp_path->foreground,
2521b097a48688b Colin Xu 2020-04-14 2141 disp_path->foreground_state);
2521b097a48688b Colin Xu 2020-04-14 2142 }
2521b097a48688b Colin Xu 2020-04-14 2143 } else {
2521b097a48688b Colin Xu 2020-04-14 2144 // Switch to host is always expected possible
2521b097a48688b Colin Xu 2020-04-14 2145 do_switch = true;
2521b097a48688b Colin Xu 2020-04-14 2146 gvt_dbg_dpy("Switch display to host\n");
2521b097a48688b Colin Xu 2020-04-14 2147 }
2521b097a48688b Colin Xu 2020-04-14 2148 } else {
2521b097a48688b Colin Xu 2020-04-14 2149 do_switch = false;
2521b097a48688b Colin Xu 2020-04-14 2150 gvt_dbg_dpy("Skip switch display due to unchanged owner\n");
2521b097a48688b Colin Xu 2020-04-14 2151 }
2521b097a48688b Colin Xu 2020-04-14 2152
2521b097a48688b Colin Xu 2020-04-14 2153 if (do_switch && !prepare_for_switch_display(gvt, pipe)) {
2521b097a48688b Colin Xu 2020-04-14 2154 intel_gvt_switch_display_pipe(gvt, pipe, old_v, new_v);
2521b097a48688b Colin Xu 2020-04-14 2155 if (old_v && new_v)
2521b097a48688b Colin Xu 2020-04-14 2156 gvt_dbg_dpy("Change PIPE_%c PORT_%c owner from "
2521b097a48688b Colin Xu 2020-04-14 2157 "vGPU-%d to vGPU-%d\n",
2521b097a48688b Colin Xu 2020-04-14 2158 pipe_name(pipe), port_name(port),
2521b097a48688b Colin Xu 2020-04-14 2159 old_v->id, new_v->id);
2521b097a48688b Colin Xu 2020-04-14 2160 else if (old_v && !new_v)
2521b097a48688b Colin Xu 2020-04-14 2161 gvt_dbg_dpy("Change PIPE_%c PORT_%c owner from "
2521b097a48688b Colin Xu 2020-04-14 2162 "vGPU-%d to host\n",
2521b097a48688b Colin Xu 2020-04-14 2163 pipe_name(pipe), port_name(port),
2521b097a48688b Colin Xu 2020-04-14 2164 old_v->id);
2521b097a48688b Colin Xu 2020-04-14 2165 else if (!old_v && new_v)
2521b097a48688b Colin Xu 2020-04-14 2166 gvt_dbg_dpy("Change PIPE_%c PORT_%c owner from "
2521b097a48688b Colin Xu 2020-04-14 2167 "host to vGPU-%d\n",
2521b097a48688b Colin Xu 2020-04-14 2168 pipe_name(pipe), port_name(port),
2521b097a48688b Colin Xu 2020-04-14 2169 new_v->id);
2521b097a48688b Colin Xu 2020-04-14 2170 else
2521b097a48688b Colin Xu 2020-04-14 2171 gvt_dbg_dpy("Unexpected change PIPE_%c PORT_%c "
2521b097a48688b Colin Xu 2020-04-14 2172 "owner from host to host\n",
2521b097a48688b Colin Xu 2020-04-14 2173 pipe_name(pipe), port_name(port));
2521b097a48688b Colin Xu 2020-04-14 2174 }
2521b097a48688b Colin Xu 2020-04-14 2175 }
2521b097a48688b Colin Xu 2020-04-14 2176
2521b097a48688b Colin Xu 2020-04-14 2177 mutex_unlock(&gvt->sw_in_progress);
2521b097a48688b Colin Xu 2020-04-14 2178 mutex_unlock(&gvt->lock);
2521b097a48688b Colin Xu 2020-04-14 2179 }
2521b097a48688b Colin Xu 2020-04-14 2180
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
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2021-02-09 12:55 [intel-linux-intel-lts:5.4/yocto 8/24] drivers/gpu/drm/i915/gvt/display.c:2137:21-23: ERROR: disp_path is NULL but dereferenced kernel test robot
2021-04-12 18:43 kernel test robot
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