On Wed, 5 Nov 2003 [EMAIL PROTECTED] wrote: > > i downloaded the new 0.9.5 paxtest package and amongst other changes it > > has the following oneliner change: [...] > > + do_mprotect((unsigned long)argv & ~4095U, 4096, > > PROT_READ|PROT_WRITE|PROT_EXEC);
> first of all, it's multithreaded. [...] paxtest does not link to libpthread, nor does it create threads, at all. How can you claim it's multithreaded? > glibc creates executable thread stacks by default. [...] to the contrary, glibc does this: 00594000-005a1000 r-xp 00000000 09:00 735400 /lib/tls/libpthread-0.60.so 005a1000-005a2000 rw-p 0000c000 09:00 735400 /lib/tls/libpthread-0.60.so 005a2000-005a4000 rw-p 00000000 00:00 0 0063b000-00650000 r-xp 00000000 09:00 730361 /lib/ld-2.3.2.so 00650000-00651000 rw-p 00015000 09:00 730361 /lib/ld-2.3.2.so 00e25000-00f58000 r-xp 00000000 09:00 735396 /lib/tls/libc-2.3.2.so 00f58000-00f5b000 rw-p 00132000 09:00 735396 /lib/tls/libc-2.3.2.so 00f5b000-00f5e000 rw-p 00000000 00:00 0 08048000-08049000 r-xp 00000000 09:02 5226629 /tmp/test 08049000-0804a000 rw-p 00000000 09:02 5226629 /tmp/test 09e9c000-09ebd000 rw-p 00000000 00:00 0 beba6000-beba7000 ---p 00000000 00:00 0 <== thread stack guard page beba7000-bf5a8000 rw-p 00001000 00:00 0 <== non-exec thread stack bf5be000-bf5bf000 rw-p 00000000 00:00 0 bfe79000-c0000000 rw-p fff5d000 00:00 0 $ rpm -q glibc glibc-2.3.2-101 Ingo