Since installing 2.1.61 + Dave's CVS patches (971103), some
binaries and shared libraries fail to work, but only when
they are on NFS-mounted drives.
For example, an strace running RTIN from an NFS mounted drive:
whistler:~$strace rtin
execve("/usr/local/i386-unknown-linux/bin/rtin", ["rtin"], [/* 34 vars */]) = 0
mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40007000
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++
(Runs fine from /tmp)
Similarly, libmediatool.so.0.0.6 (from KDE Beta 1) fails
in mmap() when it's loaded from an NFS drive, but not when
I get it from /tmp. In this case, the error is slightly
different:
[extract from strace ...]
open("/usr/local/i386-unknown-linux/lib/kde-beta-1/lib/libmediatool.so.0", O_RDO
NLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3"..., 4096) = 4096
mmap(0, 16384, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4000c000
mmap(0x4000c000, 9535, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) = 0x400
0c000
mmap(0x4000f000, 1756, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x2000) =
-1 EINVAL (Invalid argument)
write(2, "ls: can\'t map \'/usr/local/i386"..., 83ls: can't map '/usr/local/i386
-unknown-linux/lib/kde-beta-1/lib/libmediatool.so.0'
) = 83
Has anyone seen this before? It only affects certain programs/
libraries. Lots of things still run OK from NFS.
I haven't tried 2.1.62 yet, but a quick glance seems to show
that there are no patches in there that should affect mmap.
The client: Linux 2.1.61 + CVS 971103, -o nolock
The server: Linux 2.0.30, NFS server 2.2beta29
Rich.
-- Richard Jones rjones@imcl.com Tel: +44 171 460 6141 Fax: .. 4461 ABLE INmEDIA Ltd. 262a Fulham Rd. London SW10 9EL. "you'll write in PGP: www.four11.com telegraphic, or you won't write at all" [Céline]