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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-08 04:17:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-08 04:17:45 +0000
commit41fb2ba1cd2e84f28cd9f5b91d670fef7d982409 (patch)
tree3518db389445fe1c1e74d64e3598ed34c6e2c59a /drivers/acpi/acpica/dswstate.c
parentReleasing progress-linux version 4.19.282-1progress5u1. (diff)
downloadlinux-41fb2ba1cd2e84f28cd9f5b91d670fef7d982409.tar.xz
linux-41fb2ba1cd2e84f28cd9f5b91d670fef7d982409.zip
Merging upstream version 4.19.289.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/acpi/acpica/dswstate.c')
-rw-r--r--drivers/acpi/acpica/dswstate.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c
index c879380e5..ddafbf441 100644
--- a/drivers/acpi/acpica/dswstate.c
+++ b/drivers/acpi/acpica/dswstate.c
@@ -576,9 +576,14 @@ acpi_ds_init_aml_walk(struct acpi_walk_state *walk_state,
ACPI_FUNCTION_TRACE(ds_init_aml_walk);
walk_state->parser_state.aml =
- walk_state->parser_state.aml_start = aml_start;
- walk_state->parser_state.aml_end =
- walk_state->parser_state.pkg_end = aml_start + aml_length;
+ walk_state->parser_state.aml_start =
+ walk_state->parser_state.aml_end =
+ walk_state->parser_state.pkg_end = aml_start;
+ /* Avoid undefined behavior: applying zero offset to null pointer */
+ if (aml_length != 0) {
+ walk_state->parser_state.aml_end += aml_length;
+ walk_state->parser_state.pkg_end += aml_length;
+ }
/* The next_op of the next_walk will be the beginning of the method */