Date: Sun, 24 Sep 2006 14:46:25 +0400 From: Boris Samorodov <bsam@ipt.ru> To: Marcin Cieslak <saper@SYSTEM.PL> Cc: emulation@freebsd.org Subject: Re: mmap(2) fingerprinting on amd64 Message-ID: <48095086@bsam.ru> In-Reply-To: <450F3525.5080305@SYSTEM.PL> (Marcin Cieslak's message of "Tue, 19 Sep 2006 02:09:09 %2B0200") References: <450F3525.5080305@SYSTEM.PL>
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On Tue, 19 Sep 2006 02:09:09 +0200 Marcin Cieslak wrote: > Attached please find a very simple brute-force mmap(2) testing program. > 1. It would be nice if somebody could run this on real amd64 linux machine. > and under FreeBSD linuxolator on amd64 machine. Please mail results to me. Here is the result on a real linux machine (not mine, got the result via russian fido): ----- Linux amd64 2.6.17-2-amd64 #1 SMP Wed Sep 13 17:49:33 CEST 2006 x86_64 GNU/Linux 0001: mmap(0, 1024, PROT_NONE, MAP_SHARED, ...) for filemode O_RDONLY: mmap OK read: sigsegv write: sigsegv 0002: mmap(0, 1024, PROT_READ, MAP_SHARED, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: sigsegv 0003: mmap(0, 1024, PROT_WRITE, MAP_SHARED, ...) for filemode O_RDONLY: mmap error (13) 0004: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_SHARED, ...) for filemode O_RDONLY: mmap error (13) 0005: mmap(0, 1024, PROT_NONE, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: sigsegv write: sigsegv 0006: mmap(0, 1024, PROT_READ, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: sigsegv 0007: mmap(0, 1024, PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: sigsegv write: OK 0008: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: OK 0009: mmap(0, 1024, PROT_NONE, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0010: mmap(0, 1024, PROT_READ, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0011: mmap(0, 1024, PROT_WRITE, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0012: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0013: mmap(0, 1024, PROT_NONE, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0014: mmap(0, 1024, PROT_READ, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0015: mmap(0, 1024, PROT_WRITE, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0016: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0017: mmap(0, 1024, PROT_NONE, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: sigsegv write: sigsegv 0018: mmap(0, 1024, PROT_READ, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: 0x41 write: sigsegv 0019: mmap(0, 1024, PROT_WRITE, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: sigsegv write: OK 0020: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: 0x42 write: OK 0021: mmap(0, 1024, PROT_NONE, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: sigsegv write: sigsegv 0022: mmap(0, 1024, PROT_READ, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: 0x42 write: sigsegv 0023: mmap(0, 1024, PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: sigsegv write: OK 0024: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: 0x42 write: OK 0025: mmap(0, 1024, PROT_NONE, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: sigsegv write: sigsegv 0026: mmap(0, 1024, PROT_READ, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: 0x00 write: sigsegv 0027: mmap(0, 1024, PROT_WRITE, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: sigsegv write: OK 0028: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: 0x00 write: OK 0029: mmap(0, 1024, PROT_NONE, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: sigsegv write: sigsegv 0030: mmap(0, 1024, PROT_READ, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: 0x00 write: sigsegv 0031: mmap(0, 1024, PROT_WRITE, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: sigsegv write: OK 0032: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: 0x00 write: OK ----- Next is the result at my amd64 machine, binary built with gentoo-stage-3: ----- # uname -a FreeBSD bsam.ru 7.0-CURRENT FreeBSD 7.0-CURRENT #16: Wed Sep 20 00:51:44 MSD 2006 bsam@bsam.ru:/usr/obj/usr/src/sys/GENERIC amd64 # ./a.out 0001: mmap(0, 1024, PROT_NONE, MAP_SHARED, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: sigsegv 0002: mmap(0, 1024, PROT_READ, MAP_SHARED, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: sigsegv 0003: mmap(0, 1024, PROT_WRITE, MAP_SHARED, ...) for filemode O_RDONLY: mmap error (13) 0004: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_SHARED, ...) for filemode O_RDONLY: mmap error (13) 0005: mmap(0, 1024, PROT_NONE, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: sigsegv 0006: mmap(0, 1024, PROT_READ, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: sigsegv 0007: mmap(0, 1024, PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: OK 0008: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDONLY: mmap OK read: 0x41 write: OK 0009: mmap(0, 1024, PROT_NONE, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0010: mmap(0, 1024, PROT_READ, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0011: mmap(0, 1024, PROT_WRITE, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0012: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_SHARED, ...) for filemode O_WRONLY: mmap error (13) 0013: mmap(0, 1024, PROT_NONE, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0014: mmap(0, 1024, PROT_READ, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0015: mmap(0, 1024, PROT_WRITE, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0016: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_PRIVATE, ...) for filemode O_WRONLY: mmap error (13) 0017: mmap(0, 1024, PROT_NONE, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: 0x41 write: sigsegv 0018: mmap(0, 1024, PROT_READ, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: 0x41 write: sigsegv 0019: mmap(0, 1024, PROT_WRITE, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: 0x41 write: OK 0020: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_SHARED, ...) for filemode O_RDWR: mmap OK read: 0x42 write: OK 0021: mmap(0, 1024, PROT_NONE, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: 0x42 write: sigsegv 0022: mmap(0, 1024, PROT_READ, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: 0x42 write: sigsegv 0023: mmap(0, 1024, PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: 0x42 write: OK 0024: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_PRIVATE, ...) for filemode O_RDWR: mmap OK read: 0x42 write: OK 0025: mmap(0, 1024, PROT_NONE, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: 0x00 write: sigsegv 0026: mmap(0, 1024, PROT_READ, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: 0x00 write: sigsegv 0027: mmap(0, 1024, PROT_WRITE, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: 0x00 write: OK 0028: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, ...) for filemode anonymous: mmap OK read: 0x00 write: OK 0029: mmap(0, 1024, PROT_NONE, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: 0x00 write: sigsegv 0030: mmap(0, 1024, PROT_READ, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: 0x00 write: sigsegv 0031: mmap(0, 1024, PROT_WRITE, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: 0x00 write: OK 0032: mmap(0, 1024, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, ...) for filemode anonymous: mmap OK read: 0x00 write: OK ----- WBR -- Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone & Internet SP FreeBSD committer, http://www.FreeBSD.org The Power To Serve
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