On Wed, Aug 22, 2012 at 9:39 PM, Florian Philipp <li...@binarywings.net> wrote: > Am 22.08.2012 20:52, schrieb Jorge Almeida: > > This should not happen, especially on such a small archive. I've tried > `strace xz -t m4-1.4.16.tar.xz` and looked for calls to mmap (e.g. > memory allocations). They never were larger than 68 MB > > Try it yourself. The second parameter in mmap is the allocated size in byte. > > In the box where it works:
$ strace -e trace=mmap2 xz -t m4-1.4.16.tar.xz mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7746000 mmap2(NULL, 134226, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7725000 mmap2(NULL, 155888, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb76fe000 mmap2(0xb7723000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24) = 0xb7723000 mmap2(NULL, 107004, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb76e3000 mmap2(0xb76fa000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16) = 0xb76fa000 mmap2(0xb76fc000, 4604, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb76fc000 mmap2(NULL, 1727172, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb753d000 mmap2(0xb76dd000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19f) = 0xb76dd000 mmap2(0xb76e0000, 10948, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb76e0000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb753c000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb753b000 mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb733b000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7745000 mmap2(NULL, 1052672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb723a000 +++ exited with 0 +++ In the other box, in the gentoo chroot: # strace -e trace=mmap2 xz -t /usr/portage/distfiles/m4-1.4.16.tar.xz mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb779e000 mmap2(NULL, 12143, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb779b000 mmap2(NULL, 143600, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7777000 mmap2(0xb7799000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x21) = 0xb7799000 mmap2(NULL, 1448488, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7615000 mmap2(0xb7771000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15c) = 0xb7771000 mmap2(0xb7774000, 10792, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7774000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7614000 mmap2(NULL, 2097152, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7414000 mmap2(NULL, 4096, PROT_READ, MAP_PRIVATE, 3, 0x102a) = 0xb779d000 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb779c000 mmap2(NULL, 67112960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap2(NULL, 67244032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap2(NULL, 2097152, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0xb7214000 mmap2(NULL, 67112960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb779c000 xz: /usr/portage/distfiles/m4-1.4.16.tar.xz: Cannot allocate memory +++ exited with 1 +++ Thanks, Jorge Almeida
