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more UBsan

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This commit is contained in:
xamidev
2026-03-28 21:50:19 +01:00
parent 3cd38f654c
commit 65371077d9
8 changed files with 184 additions and 12 deletions
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src/security/ubsan.c
+133
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@@ -158,3 +158,136 @@ void __ubsan_handle_out_of_bounds(void* data_raw, void* index_raw)
panic(NULL, "Undefined Behavior Sanitization error: out of bounds");
}
/*
* __ubsan_handle_divrem_overflow - Hook for UBSan
* @data_raw: pointer to error data
* @lhs_raw: left hand side operator
* @rhs_raw: right hand side operator
*
* This function is executed when the UBSan library detects
* following undefined behavior: division remainder overflow.
* It halts the system and gives the location of the code
* that triggered it.
*/
void __ubsan_handle_divrem_overflow(void* data_raw, void* lhs_raw, void* rhs_raw)
{
struct ubsan_overflow_data* data = (struct ubsan_overflow_data*) data_raw;
uintptr_t lhs = (uintptr_t) lhs_raw;
uintptr_t rhs = (uintptr_t) rhs_raw;
struct ubsan_source_location* loc = &data->location;
DEBUG("\x1b[38;5;231mUBSan: division remainder overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
if (init.all) {
printf("\x1b[38;5;231mUBSan: division remainder overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
}
panic(NULL, "Undefined Behavior Sanitization error: division remainder overflow");
}
/*
* __ubsan_handle_sub_overflow - Hook for UBSan
* @data_raw: pointer to error data
* @lhs_raw: left hand side operator
* @rhs_raw: right hand side operator
*
* This function is executed when the UBSan library detects
* following undefined behavior: subtraction overflow.
* It halts the system and gives the location of the code
* that triggered it.
*/
void __ubsan_handle_sub_overflow(void* data_raw, void* lhs_raw, void* rhs_raw)
{
struct ubsan_overflow_data* data = (struct ubsan_overflow_data*) data_raw;
uintptr_t lhs = (uintptr_t) lhs_raw;
uintptr_t rhs = (uintptr_t) rhs_raw;
struct ubsan_source_location* loc = &data->location;
DEBUG("\x1b[38;5;231mUBSan: subtraction overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
if (init.all) {
printf("\x1b[38;5;231mUBSan: subtraction overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
}
panic(NULL, "Undefined Behavior Sanitization error: subtraction overflow");
}
/*
* __ubsan_handle_add_overflow - Hook for UBSan
* @data_raw: pointer to error data
* @lhs_raw: left hand side operator
* @rhs_raw: right hand side operator
*
* This function is executed when the UBSan library detects
* following undefined behavior: addition overflow.
* It halts the system and gives the location of the code
* that triggered it.
*/
void __ubsan_handle_add_overflow(void* data_raw, void* lhs_raw, void* rhs_raw)
{
struct ubsan_overflow_data* data = (struct ubsan_overflow_data*) data_raw;
uintptr_t lhs = (uintptr_t) lhs_raw;
uintptr_t rhs = (uintptr_t) rhs_raw;
struct ubsan_source_location* loc = &data->location;
DEBUG("\x1b[38;5;231mUBSan: addition overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
if (init.all) {
printf("\x1b[38;5;231mUBSan: addition overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
}
panic(NULL, "Undefined Behavior Sanitization error: addition overflow");
}
/*
* __ubsan_handle_mul_overflow - Hook for UBSan
* @data_raw: pointer to error data
* @lhs_raw: left hand side operator
* @rhs_raw: right hand side operator
*
* This function is executed when the UBSan library detects
* following undefined behavior: multiplication overflow.
* It halts the system and gives the location of the code
* that triggered it.
*/
void __ubsan_handle_mul_overflow(void* data_raw, void* lhs_raw, void* rhs_raw)
{
struct ubsan_overflow_data* data = (struct ubsan_overflow_data*) data_raw;
uintptr_t lhs = (uintptr_t) lhs_raw;
uintptr_t rhs = (uintptr_t) rhs_raw;
struct ubsan_source_location* loc = &data->location;
DEBUG("\x1b[38;5;231mUBSan: multiplication overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
if (init.all) {
printf("\x1b[38;5;231mUBSan: multiplication overflow (lhs=%p, rhs=%p) at %s:%u:%u\x1b[0m", lhs, rhs, loc->filename, loc->line, loc->column);
}
panic(NULL, "Undefined Behavior Sanitization error: multiplication overflow");
}
/*
* __ubsan_handle_negate_overflow - Hook for UBSan
* @data_raw: pointer to error data
* @old_value_raw: value before overflow
*
* This function is executed when the UBSan library detects
* following undefined behavior: negation overflow.
* It halts the system and gives the location of the code
* that triggered it.
*/
void __ubsan_handle_negate_overflow(void* data_raw, void* old_value_raw)
{
struct ubsan_overflow_data* data = (struct ubsan_overflow_data*) data_raw;
uintptr_t old_value = (uintptr_t) old_value_raw;
struct ubsan_source_location* loc = &data->location;
DEBUG("\x1b[38;5;231mUBSan: negation overflow (old_value=%p) at %s:%u:%u\x1b[0m", old_value, loc->filename, loc->line, loc->column);
if (init.all) {
printf("\x1b[38;5;231mUBSan: negation overflow (old_value=%p) at %s:%u:%u\x1b[0m", old_value, loc->filename, loc->line, loc->column);
}
panic(NULL, "Undefined Behavior Sanitization error: negation overflow");
}