[Sbcl-devel] sbcl on sparc64: mmap with MAP_NORESERVE not working?

[Peter V. E. <pva...@de...>]

Hello,

I'm trying to compile a new sbcl version on vore.debian.org using
the sbcl-0.9.1-sparc-linux binary tarball and I seem to=20
keep invoking the oom-killer, despite using MAP_NORESERVE.

=46rom the strace -e mmap output, mixed with the parms.lisp parameters=20
for sparc/linux:

mmap(0x10000000, 83886080, PROT_READ|PROT_WRITE|PROT_EXEC,=20
  MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0)=20
  =3D 0x10000000
for:
(def!constant read-only-space-start     #x10000000)
(def!constant read-only-space-end       #x15000000)

mmap(0x28000000, 67108864, PROT_READ|PROT_WRITE|PROT_EXEC,=20
  MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0)=20
  =3D 0x28000000
for:
(def!constant static-space-start        #x28000000)
(def!constant static-space-end          #x2c000000)

mmap(0x30000000, 134217728, PROT_READ|PROT_WRITE|PROT_EXEC,=20
  MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0)=20
  =3D 0x30000000
for:
(def!constant dynamic-0-space-start #x30000000)
def!constant dynamic-0-space-end   #x38000000)

mmap(0x40000000, 134217728, PROT_READ|PROT_WRITE|PROT_EXEC,=20
  MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0)=20
  =3D 0x40000000
(def!constant dynamic-1-space-start #x40000000)
(def!constant dynamic-1-space-end   #x48000000)

mmap(0xf800000, 8388608, PROT_READ|PROT_WRITE|PROT_EXEC,=20
  MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0)=20
  =3D 0xf800000
for
(def!constant linkage-table-space-start #x0f800000)
(def!constant linkage-table-space-end   #x10000000)

These ranges seem still to be free:

(unstable)pvaneynd@vore:~/sbcl$ uname -a
Linux vore 2.6.15-18-sparc64 #1 Thu Mar 9 14:41:32 UTC 2006 sparc64 GNU/Lin=
ux
(unstable)pvaneynd@vore:~/sbcl$ cat /proc/self/maps
00010000-00014000 r-xp 00000000 08:11 3417595                            /b=
in/cat
00024000-00026000 rwxp 00004000 08:11 3417595                            /b=
in/cat
00026000-00048000 rwxp 00026000 00:00 0                                  [h=
eap]
70000000-7001a000 r-xp 00000000 08:11 4398898                            /l=
ib/ld-2.3.6.so
7001a000-7001c000 rw-p 7001a000 00:00 0
7002a000-7002e000 rwxp 0001a000 08:11 4398898                            /l=
ib/ld-2.3.6.so
70044000-70160000 r-xp 00000000 08:11 4400180                            /l=
ib/libc-2.3.6.so
70160000-70170000 ---p 0011c000 08:11 4400180                            /l=
ib/libc-2.3.6.so
70170000-70172000 r--p 0011c000 08:11 4400180                            /l=
ib/libc-2.3.6.so
70172000-70178000 rwxp 0011e000 08:11 4400180                            /l=
ib/libc-2.3.6.so
70178000-7017a000 rwxp 70178000 00:00 0
ef81e000-ef848000 rw-p ef81e000 00:00 0                                  [s=
tack]

Still after a while the sbcl gets killed by the=20
oom killer.=20

Any clues?

Groetjes, Peter

=2D-=20
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on|=20