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mmap broken in glibc 2.2?
- To: libc-alpha Mailinglist <libc-alpha at sourceware dot cygnus dot com>
- Subject: mmap broken in glibc 2.2?
- From: Andreas Jaeger <aj at suse dot de>
- Date: 13 Jan 2000 11:44:27 +0100
I configured glibc 2.2 CVS with kernel headers from 2.3.39 - but run a
2.2.13 kernel. tst-mmap fails:
LD_LIBRARY_PATH=. elf/ld-linux.so.2 posix/tst-mmap
Segmentation fault
strace reports:
mmap(NULL, 1000, PROT_READ, MAP_SHARED, 3, 0xfff) = -1 EINVAL (Invalid argument)
mmap(NULL, 1000, PROT_READ, MAP_PRIVATE, 3, 0xfff) = -1 EINVAL (Invalid argument)
brk(0x8001a000) = 0x8001a000
mmap(0x80016171, 1000, PROT_READ, MAP_SHARED|MAP_FIXED, 3, 0x1000) = -1 EINVAL (Invalid argument)
SYS_192(0x80016171, 0x3e8, 0x1, 0x11, 0x3) = -1 ENOSYS (Function not implemented)
mmap(0x80016171, 1000, PROT_READ, MAP_SHARED|MAP_FIXED, 3, 0x1000) = -1 EINVAL (Invalid argument)
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++
gdb shows:
(gdb)
113 ptr = mmap64 (mem + 1, 1000, PROT_READ, MAP_SHARED | MAP_FIXED, fd, ps);
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x11 in ?? ()
Is the mmap64 emulation broken? This might affect glibc 2.1.3 also
(2.1.3 doesn't have tst-mmap but the same mmap64 code AFAIK).
Andreas
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.rhein-neckar.de