Package: eglibc Version: FTBFS with kernels >= 2.6.37 (error in tst-writev) Severity: serious Justification: fails to build from source
Tested with (self-built) kernels 2.6.38.6 and 2.6.39.1: tst-writev fails with Error 1. It succeeds on 2.6.36.4. On closer inspection the writev() call in tst-writev returns a value that is 4096 smaller than expected. strace howeer shows that the iovec parameter to the actual syscall is as expected. IMHO this result is correct (and tst-writev must be modified or scrapped): starting with 2.6.37 the Linux kernel "clamps" the maximum amount of what can be written in a single syscall to MAX_RW_COUNT = INT_MAX & PAGE_CACHE_MASK. Cf. the changes to rw_copy_check_uvector() in fs/read_write.c in 2.6.37 Cheers, Roderich -- System Information: Debian Release: wheezy/sid APT prefers oneiric APT policy: (500, 'oneiric'), (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.39.1 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
