Do you have a reproducer? On Wed, Aug 6, 2014 at 6:04 AM, ji wang <[email protected]> wrote: > First: Double Free > ================================================================= > ==2415==ERROR: AddressSanitizer: attempting double-free on 0xb4c28b20 in > thread T16777215: > ==2415==AddressSanitizer CHECK failed: > ../../../.././../gcc/gcc-4.9/libsanitizer/asan/asan_report.cc:586 > "((free_stack->size)) > ((0))" (0x0, 0x0) > #0 0xb67af94f (/system/lib/libasan.so.1+0x3f94f) > #1 0xb67b2f8b (/system/lib/libasan.so.1+0x42f8b) > #2 0xb67ae137 (/system/lib/libasan.so.1+0x3e137 > ... > ... ... > According to the asan code, free_stack maybe should not be empty, should > print something like “freed by thread T0 here:... ...previously allocated by > thread T0 here:... ..." > And of cource It's important, for what reason we may lose this part log > print or somethine went wrong on my asan? > > Second: UseAfterFree > ================================================================= > ==4782==ERROR: AddressSanitizer: heap-use-after-free on address 0xadb64ff7 > at pc 0xb5916e87 bp 0xb09ff8bc sp 0xb09ff8b4 > WRITE of size 1 at 0xadb64ff7 thread T16777215 > #0 0xb5916e85 (/system/lib/libstagefright.so+0x12ce85) > #1 0xb59185b3 (/system/lib/libstagefright.so+0x12e5b3) > ... > > 0xadb64ff7 is located 7 bytes inside of 8-byte region > [0xadb64ff0,0xadb64ff8) > ==4782==AddressSanitizer CHECK failed: > ../../../.././../gcc/gcc-4.9/libsanitizer/asan/asan_allocator2.cc:234 > "((id)) != (0)" (0x0, 0x0) > #0 0xb65cd94f (/system/lib/libasan.so.1+0x3f94f) > #1 0xb65d0f8b (/system/lib/libasan.so.1+0x42f8b) > #2 0xb65a2637 (/system/lib/libasan.so.1+0x14637) > ... > #6 0xb58ff04f (/system/lib/libstagefright.so+0x12c04f) > #7 0xb59273d3 (/system/lib/libstagefright.so+0x1543d3) > This one is the "CHECK(id);" error, what this id for? And more, the > stack printed first and second which I maked red colour is the same, this is > werid, why? > > -- > You received this message because you are subscribed to the Google Groups > "address-sanitizer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout.
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