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From: Andrew Cooper <andrew.cooper3@citrix.com>
To: George Dunlap <george.dunlap@citrix.com>, xen-devel@lists.xenproject.org
Cc: Ian Jackson <ian.jackson@citrix.com>,
	Wei Liu <wei.liu2@citrix.com>, Jan Beulich <jbeulich@suse.com>
Subject: Re: [PATCH 01/14] fuzz/x86_emulate: Remove redundant AFL hook
Date: Fri, 25 Aug 2017 18:37:55 +0100	[thread overview]
Message-ID: <6ce84281-79f8-c646-409c-957d9458d38b@citrix.com> (raw)
In-Reply-To: <20170825164343.29015-1-george.dunlap@citrix.com>

On 25/08/17 17:43, George Dunlap wrote:
> You don't need __AFL_INIT if you have __AFL_LOOP.
>
> Signed-off-by: George Dunlap <george.dunlap@citrix.com>

Really?  Is that covered in any documentation?

I got the contrary impression from whichever version of AFL I was using
when I put this in, and a quick look over the afl-fuzz source doesn't
appear to equate them in any way.

~Andrew

> ---
> CC: Ian Jackson <ian.jackson@citrix.com>
> CC: Wei Liu <wei.liu2@citrix.com>
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: Jan Beulich <jbeulich@suse.com>
> ---
>  tools/fuzz/x86_instruction_emulator/afl-harness.c | 2 --
>  1 file changed, 2 deletions(-)
>
> diff --git a/tools/fuzz/x86_instruction_emulator/afl-harness.c b/tools/fuzz/x86_instruction_emulator/afl-harness.c
> index 154869336a..1a79ff228e 100644
> --- a/tools/fuzz/x86_instruction_emulator/afl-harness.c
> +++ b/tools/fuzz/x86_instruction_emulator/afl-harness.c
> @@ -63,8 +63,6 @@ int main(int argc, char **argv)
>          exit(-1);
>  
>  #ifdef __AFL_HAVE_MANUAL_CONTROL
> -    __AFL_INIT();
> -
>      while ( __AFL_LOOP(1000) )
>  #endif
>      {


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  parent reply	other threads:[~2017-08-25 17:37 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-25 16:43 [PATCH 01/14] fuzz/x86_emulate: Remove redundant AFL hook George Dunlap
2017-08-25 16:43 ` [PATCH 02/14] x86emul/fuzz: add rudimentary limit checking George Dunlap
2017-08-25 16:43 ` [PATCH 03/14] fuzz/x86_emulate: Actually use cpu_regs input George Dunlap
2017-09-15 11:21   ` Wei Liu
2017-08-25 16:43 ` [PATCH 04/14] fuzz/x86_emulate: Add a better input size check George Dunlap
2017-08-25 17:42   ` Andrew Cooper
2017-09-15 11:39   ` Wei Liu
2017-09-25  9:36     ` George Dunlap
2017-09-25 11:08       ` George Dunlap
2017-08-25 16:43 ` [PATCH 05/14] fuzz/x86_emulate: Improve failure descriptions in x86_emulate harness George Dunlap
2017-09-15 11:41   ` Wei Liu
2017-09-15 11:47     ` George Dunlap
2017-08-25 16:43 ` [PATCH 06/14] fuzz/x86_emulate: Implement dread() and davail() George Dunlap
2017-08-25 17:45   ` Andrew Cooper
2017-09-14 17:06     ` George Dunlap
2017-09-25 11:40     ` George Dunlap
2017-08-25 16:43 ` [PATCH 07/14] fuzz/x86_emulate: Rename the file containing the wrapper code George Dunlap
2017-09-15 11:45   ` Wei Liu
2017-08-25 16:43 ` [PATCH 08/14] fuzz/x86_emulate: Add 'afl-cov' target George Dunlap
2017-09-15 12:55   ` Wei Liu
2017-09-15 12:57   ` Wei Liu
2017-09-15 13:28     ` George Dunlap
2017-08-25 16:43 ` [PATCH 09/14] fuzz/x86_emulate: Take multiple test files for inputs George Dunlap
2017-09-15 13:07   ` Wei Liu
2017-09-15 13:27     ` George Dunlap
2017-09-15 13:42       ` Wei Liu
2017-08-25 16:43 ` [PATCH 10/14] fuzz/x86_emulate: Move all state into fuzz_state George Dunlap
2017-08-25 16:43 ` [PATCH 11/14] fuzz/x86_emulate: Make input more compact George Dunlap
2017-08-25 16:52   ` George Dunlap
2017-08-25 17:59   ` Andrew Cooper
2017-08-28  9:10     ` George Dunlap
2017-08-25 16:43 ` [PATCH 12/14] fuzz/x86_emulate: Add --rerun option to try to track down instability George Dunlap
2017-09-15 13:30   ` Wei Liu
2017-08-25 16:43 ` [PATCH 13/14] fuzz/x86_emulate: Set and fuzz more CPU state George Dunlap
2017-08-25 16:43 ` [PATCH 14/14] fuzz/x86_emulate: Add an option to limit the number of instructions executed George Dunlap
2017-09-15 13:38   ` Wei Liu
2017-09-15 13:55     ` George Dunlap
2017-09-19 10:05       ` Wei Liu
2017-08-25 17:37 ` Andrew Cooper [this message]
2017-08-28 10:34   ` [PATCH 01/14] fuzz/x86_emulate: Remove redundant AFL hook George Dunlap
2017-09-14 15:26     ` George Dunlap
2017-09-22 15:47   ` George Dunlap
2017-09-22 16:09     ` Andrew Cooper

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