On 12/19/2013 2:17 PM, Aaro Koskinen wrote:
Hi,
This commit (0576da2c08e3d332f1b0653030d28ab804585ab6) and the current
mainline kernel (3.13-rc4) gives me the following with GLIBC 2.18:
$ localedef -c -i en_US -f UTF-8 en_US.UTF-8
cannot map archive header: Invalid argument
strace looks like this:
mmap2(NULL, 536870912, PROT_NONE, MAP_SHARED, 3, 0) = 0x42f34000
mmap2(0x43000000, 1607632, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, 3, 0) = -1 EINVAL (Invalid argument)
With the patch reverted, it works:
mmap2(NULL, 536870912, PROT_NONE, MAP_SHARED, 3, 0) = 0x42d74000
mmap2(0x43000000, 1607632, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, 3, 0) = 0x43000000
BTW, note that for GLIBC 2.18 some changes were done regarding this:
https://sourceware.org/bugzilla/show_bug.cgi?id=10283
Are you sure the glibc changes are correct? PARISC addresses are not
strictly aligned to SHMLBA.
There's also a page offset and "random" offset derived from the kernel
address of the mapping struct.
Helge is still looking at this to try and improve the allocation density
of small maps as we run out of
memory far too quickly.
Dave
--
John David Anglin dave.anglin@xxxxxxxx
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