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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cb6ec182c1
After a variable is assigned the result of backlight_device_register, an
error test should be performed before a dereference.
A simplified version of the semantic match that finds this problem is
as follows:
// <smpl>
@def0@
expression x;
position p0;
@@
x@p0 = backlight_device_register(...)
@protected@
expression def0.x,E;
position def0.p0;
position p;
statement S;
@@
x@p0
... when != x = E
if (!IS_ERR(x) && ...) {<... x@p ...>} else S
@unprotected@
expression def0.x,E;
identifier fld;
position def0.p0;
position p != protected.p;
@@
x@p0
... when != x = E
* x@p->fld
// </smpl>
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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|---|---|---|
| .. | ||
| connector-analog-tv.c | ||
| connector-dvi.c | ||
| connector-hdmi.c | ||
| encoder-tfp410.c | ||
| encoder-tpd12s015.c | ||
| Kconfig | ||
| Makefile | ||
| panel-dpi.c | ||
| panel-dsi-cm.c | ||
| panel-lgphilips-lb035q02.c | ||
| panel-nec-nl8048hl11.c | ||
| panel-sharp-ls037v7dw01.c | ||
| panel-sony-acx565akm.c | ||
| panel-tpo-td028ttec1.c | ||
| panel-tpo-td043mtea1.c | ||