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compiler-rt/lib/asan/asan_errors.cc
| Show First 20 Lines • Show All 290 Lines • ▼ Show 20 Lines | if (access_size) { | ||||
| // Determine the error type. | // Determine the error type. | ||||
| bug_descr = "unknown-crash"; | bug_descr = "unknown-crash"; | ||||
| if (AddrIsInMem(addr)) { | if (AddrIsInMem(addr)) { | ||||
| u8 *shadow_addr = (u8 *)MemToShadow(addr); | u8 *shadow_addr = (u8 *)MemToShadow(addr); | ||||
| // If we are accessing 16 bytes, look at the second shadow byte. | // If we are accessing 16 bytes, look at the second shadow byte. | ||||
| if (*shadow_addr == 0 && access_size > SHADOW_GRANULARITY) shadow_addr++; | if (*shadow_addr == 0 && access_size > SHADOW_GRANULARITY) shadow_addr++; | ||||
| // If we are in the partial right redzone, look at the next shadow byte. | // If we are in the partial right redzone, look at the next shadow byte. | ||||
| if (*shadow_addr > 0 && *shadow_addr < 128) shadow_addr++; | if (*shadow_addr > 0 && *shadow_addr < 128) shadow_addr++; | ||||
| // For large shadow granularity, skip pass all partial right redzones. | |||||
| if (SHADOW_GRANULARITY >= 32) { | |||||
| while (AddrIsInShadow((uptr)shadow_addr) && *shadow_addr > 0 && | |||||
| *shadow_addr < 128) | |||||
| shadow_addr++; | |||||
| } | |||||
| bool far_from_bounds = false; | bool far_from_bounds = false; | ||||
| shadow_val = *shadow_addr; | shadow_val = *shadow_addr; | ||||
| int bug_type_score = 0; | int bug_type_score = 0; | ||||
| // For use-after-frees reads are almost as bad as writes. | // For use-after-frees reads are almost as bad as writes. | ||||
| int read_after_free_bonus = 0; | int read_after_free_bonus = 0; | ||||
| switch (shadow_val) { | switch (shadow_val) { | ||||
| case kAsanHeapLeftRedzoneMagic: | case kAsanHeapLeftRedzoneMagic: | ||||
| case kAsanArrayCookieMagic: | case kAsanArrayCookieMagic: | ||||
| ▲ Show 20 Lines • Show All 177 Lines • Show Last 20 Lines | |||||