Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 17 Jan 2005 14:56:03 -0500 | From | Brian Gerst <> | Subject | Re: 2.6 Series Mem Mgmt |
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Chris Bookholt wrote: > I'm hoping someone can help explain part of the layout of a process' > virtual address space in the 2.6 series kernel. > > Below is the output of "cat /proc/self/maps" on Fedora Core 3 > (2.6.9-1.6_FC2) with exec-shield[-randomize] disabled and > legacy_vm_layout enabled. > > What is being mapped in at last line (ffffe000-fffff000 ---p)? This is > always there, no matter what process I run. To my knowledge, this > wasn't the case on 2.4. > > >$ cat /proc/self/maps > 08048000-0804c000 r-xp 00000000 03:03 2490451 /bin/cat > 0804c000-0804d000 rw-p 00003000 03:03 2490451 /bin/cat > 0804d000-0806e000 rw-p 0804d000 00:00 0 > 42344000-42359000 r-xp 00000000 03:03 950351 /lib/ld-2.3.3.so > 42359000-4235a000 r--p 00014000 03:03 950351 /lib/ld-2.3.3.so > 4235a000-4235b000 rw-p 00015000 03:03 950351 /lib/ld-2.3.3.so > 4235d000-42473000 r-xp 00000000 03:03 950450 /lib/tls/libc-2.3.3.so > 42473000-42474000 r--p 00116000 03:03 950450 /lib/tls/libc-2.3.3.so > 42474000-42477000 rw-p 00117000 03:03 950450 /lib/tls/libc-2.3.3.so > 42477000-42479000 rw-p 42477000 00:00 0 > 55017000-55018000 rw-p 55017000 00:00 0 > 55018000-55218000 r--p 00000000 03:03 114690 /usr/lib/locale/locale-archive > feffe000-ff000000 rw-p feffe000 00:00 0 > ffffe000-fffff000 ---p 00000000 00:00 0 > > I have not had much success in my search for information via Google & > IRC and the books I have are specific to the 2.4 series. Any help would > be greatly appreciated. >
That is the vsyscall page.
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