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libunwind-eh_elf/src
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Paul Pluzhnikov 0cf76ed0b5 Check for NULL when validating addresses 
This is rather on the obvious side.

While doing strace on an executable using libunwind, I noticed a
lot of:

  msync(0, 1, MS_SYNC) = -1 ENOMEM (Cannot allocate memory)

Since we know that the first page isn't mapped (or at least doesn't
contain the data we are looking for), we can eliminate all such
msync calls.

Tested on Linux/x86_64 with no regressions.
2009-12-01 13:59:45 -08:00
..
arm Allow caller to block signals. 2009-09-25 09:35:31 -07:00
dwarf Fix a race condition in dwarf unwinding. 2009-11-24 15:18:48 -08:00
hppa Allow caller to block signals. 2009-09-25 09:35:31 -07:00
ia64 Make the remaining sigprocmask calls conditional on --enable-block-signals 2009-09-29 23:14:50 -07:00
mi Add initial ARM and MIPS support. To support this, also enable the 2008-02-04 17:16:37 -07:00
mips Allow caller to block signals. 2009-09-25 09:35:31 -07:00
ppc Mark Wielaard <mwielaard@redhat.com> writes: 2007-10-01 08:35:01 -06:00
ppc32 Allow caller to block signals. 2009-09-25 09:35:31 -07:00
ppc64 Allow caller to block signals. 2009-09-25 09:35:31 -07:00
ptrace Fix ppc32 build. 2009-04-13 11:44:45 -07:00
setjmp Add initial ARM and MIPS support. To support this, also enable the 2008-02-04 17:16:37 -07:00
unwind Use a shorter path for include 2009-04-13 10:57:21 -07:00
x86 Check for NULL when validating addresses 2009-12-01 13:59:45 -08:00
x86_64 Check for NULL when validating addresses 2009-12-01 13:59:45 -08:00
elf32.c Do nothing of UNW_REMOTE_ONLY is defined. 2003-02-15 03:10:30 +00:00
elf32.h (Logical change 1.45) 2003-02-08 10:10:59 +00:00
elf64.c Do nothing of UNW_REMOTE_ONLY is defined. 2003-02-15 03:10:30 +00:00
elf64.h (Logical change 1.45) 2003-02-08 10:10:59 +00:00
elfxx.c Introduce a tdep_get_func_addr_hook() in the ELF lookup_symbol() 2007-08-22 13:02:09 -06:00
elfxx.h Introduce a tdep_get_func_addr_hook() in the ELF lookup_symbol() 2007-08-22 13:02:09 -06:00
Makefile.am Remove the special casing of ia64 for GetIPInfo() 2009-04-24 11:10:08 -07:00
os-hpux.c Include "libunwind_i.h" instead of "tdep.h" and "internal.h". 2005-05-20 09:48:08 +00:00
os-linux.c Reduce stack use and apply CONFIG_DEBUG_FRAME to more code. 2009-10-07 12:51:03 -07:00
os-linux.h Reduce stack use and apply CONFIG_DEBUG_FRAME to more code. 2009-10-07 12:51:03 -07:00