Re: Over write store instruction and purpose of -fsanitize=address

s from it, send an > email to address-sanitizer+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/address-sanitizer/390ebc47-e6a3-4744-b5fa-92f3337c3521n%40googlegroups.com. -- Alexander Potapenko Software Engineer Google

Re: ASAN read-only poisoned by user shadow byte

eceived 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 address-...@googlegroups.com. >> > To view this discussion o

Re: ASAN read-only poisoned by user shadow byte

On Thu, Dec 12, 2019 at 1:03 PM Andrea Fioraldi wrote: > > Hi to all, Hi Andrea, > there is a way to poison bytes as read-only in the ASAN runtime? > For instance, I have a type field in a dynamic allocated structure that is > assigned only at creation > and I want to mark it as read-only

Re: address sanitizer performance slowdown

A lot of things have changed since 2015. For example, new ASan features could've been introduced that increase the slowdown. Maybe some previously disabled features got enabled by default. Maybe there were changes to the runtime (e.g. the allocator), or a newly added interceptor increased the

Re: Suppression of stack-buffer-overflow

K allocs: 18 remains: 18 > leaf1> 32 (4096): total: 128 K allocs: 16 remains: 16 > leaf1> 33 (5120): total: 256 K allocs: 48 remains: 48 > leaf1> 35 (7168): total: 128 K allocs: 9 remains: 9 > leaf1> 36 (8192): total: 832 K allocs: 96 remains: 96 > leaf1> 37 (

Re: ASAN on embedded platform (Cortex-M) ?

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Re: ASAN - How to suppress strlen Error ?

@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straße, 33 80636 München Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz d

Re: ASan chromium win7

If you've downloaded an ASan-instrumented build of Chromium, you don't need LLVM already - just start using the instrumented browser and look out for the bug reports. On Mon, Oct 9, 2017 at 5:21 PM, wrote: > Hi, > > can someone enlighten me on how to use ASan with

Re: Making adaptive redzones less aggressive

ot; group. > To unsubscribe from this group and stop receiving emails from it, send an > email to address-sanitizer+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Straß

Re: Stack Variables and Global Variables

This is more or less expected. As Kuba said, there's no distinction between a check for a heap overflow or global overflow - we just check that every memory access is valid. On Thu, Jun 22, 2017 at 9:08 AM, Aayushi Agrawal wrote: > Yes I tried but its coming out to be

Re: Clang and Address Sanitizer

sue which is not handled by address sanitizer ? > > On 02-May-2017 5:45 pm, "'Alexander Potapenko' via address-sanitizer" > <address-sanitizer@googlegroups.com> wrote: >> >> Most certainly the access to global_array[200] ends up touching a >> valid locat

Re: Clang and Address Sanitizer

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Re: How to check error log of ASAN in Linux for an xyz.o file?

this? > > -- > 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 address-sanitizer+unsubscr...@googlegroups.com. > For more o

Re: How to check error log of ASAN in Linux for an xyz.o file?

May I ask you to post the actual report you want to analyze? sent from phone On Sep 17, 2016 9:43 AM, "Karthigaasri Thirunavukkarasu" < karthigaasri...@gmail.com> wrote: > Thank you again for your valuable insight...Can you help me with how to > analyse the error that is being reported by ASAN

Re: How to check error log of ASAN in Linux for an xyz.o file?

sanitizer" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to address-sanitizer+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Germany GmbH Erika-Ma

Re: How to check error log of ASAN in Linux for an xyz.o file?

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Re: kasan with clang

Hello there, You can refer to https://github.com/ramosian-glider/clang-kernel-build for the instructions on how to build the upstream kernel with Clang. HTH, Alex On Tue, Sep 13, 2016 at 1:35 PM, WookHyun Han wrote: > Hi, > I'm doing a research to instrument Asan and

Re: Keep global variables metadata in redzone

) - 132 global names The 1052 source locations contained 1049 unique line/column pairs and referenced several instances of a single filename string. We can easily save 8 bytes on each of those 1052 __asan_global_source_location structs. On Fri, Dec 26, 2014 at 3:40 PM, Alexander Potapenko gli

Re: Keep global variables metadata in redzone

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Re: a lsan question, help me please

On Fri, Nov 28, 2014 at 12:26 PM, wuning shi wuning@gmail.com wrote: hello 1. can you tell me where is the memory scan in source code?(which file? which class? which function?) i read the most lsan source code, but i don't find that scan code : ( ScanRangeForPointers() in

Re: a lsan question, help me please

Hello. The main problem with 32-bit leak checking is that too many random 4-byte sequences look like pointers. In order to find live objects in the heap LSan scans the memory that's already known to be live and looks for pointers in it. Because LSan doesn't know anything about data types, it has

Re: Compiling for iOS Simulator

Assuming you already know how to build an application targeting the iOS simulator, you just need to use the trunk version of Clang (not the one shipped with Xcode) and pass -fsanitize=address when compiling and linking the code. There's a pretty nice writeup on using ASan with iOS simulator by

Re: Autorun gdb on error

Someone did consider it, but I think it just wasn't important enough. Doesn't the sleep_before_dying option work for you? On Oct 29, 2014 12:24 AM, Yury Gribov y.gri...@samsung.com wrote: Hi all, Has anyone considered adding a flag to ASAN_OPTIONS to start gdb automatically when

Re: AddressSanitizer and issue suppression

, Sep 25, 2014 at 2:16 AM, 'Alexander Potapenko' via address-sanitizer address-sanitizer@googlegroups.com wrote: Some time ago I've been thinking about adding a flag for each interceptor that disables checks in that interceptor similar to replace_intrin flag. Using suppressions

Re: AddressSanitizer's allocator

and stop receiving emails from it, send an email to address-sanitizer+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Moscow -- You received this message because you are subscribed to the Google Groups

Re: AddressSanitizer and issue suppression

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Re: Avoid reserving shadow for kernel area

to address-sanitizer+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Moscow -- You received this message because you are subscribed to the Google Groups address-sanitizer group. To unsubscribe from this group

Re: Issue 272 in address-sanitizer: Attempting double-free on IOS with SDL

to the Google Groups address-sanitizer group. To unsubscribe from this group and stop receiving emails from it, send an email to address-sanitizer+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Moscow -- You

Re: Help interpreting result

, visit https://groups.google.com/d/optout. -- Alexander Potapenko Software Engineer Google Moscow -- 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 address

Re: allocator_may_return_null=1?

This is an env variable ASAN_OPTIONS= allocator_may_return_null=1 On Mar 15, 2014 9:49 PM, Jeffrey Walton noloa...@gmail.com wrote: I ==26311==WARNING: AddressSanitizer failed to allocate 0x7fff bytes ==26311==AddressSanitizer's allocator is terminating the process instead of

Re: address-sanitizer check failed in Mac

Hello there, We've reproduced this bug with Chromium code (see https://code.google.com/p/address-sanitizer/issues/detail?id=274) Can you please update to Clang r203916 and verify that it's fixed? On Tue, Feb 18, 2014 at 3:38 PM, Alexander Potapenko gli...@google.com wrote: Thanks very much

Re: Issue 272 in address-sanitizer: Attempting double-free on IOS with SDL

Do you have a standalone repro? On Mar 9, 2014 1:04 AM, address-saniti...@googlecode.com wrote: Status: New Owner: Labels: Type-Defect Priority-Medium New issue 272 by sabotag...@gmail.com: Attempting double-free on IOS with SDL

Re: Compile-Time Optimizations

I thought that some optimization cases mentioned on this page could be handled by segregating the sanitizing code from the accesses themselves. Can you please elaborate what do you mean by segregation here? Is it actually treating the sanitizing code as function calls taking the variables as