diff options
| author | Masatake YAMATO <jet@gyve.org> | 2005-06-30 16:30:53 +0000 |
|---|---|---|
| committer | Masatake YAMATO <jet@gyve.org> | 2005-06-30 16:30:53 +0000 |
| commit | 711877f36a52e234c80f8cecbae3d3d03c388ba9 (patch) | |
| tree | 300878da5fae0b758f2bd4f30ba0102eb2d2ce0c | |
| parent | 63f7ffb3deb917b90fd7119c5ff09875863329fd (diff) | |
| download | emacs-711877f36a52e234c80f8cecbae3d3d03c388ba9.tar.gz | |
2005-07-01 Masatake YAMATO <jet@gyve.org>
* emacs.c (main): Passing ADD_NO_RANDOMIZE to
`personality'.
| -rw-r--r-- | etc/PROBLEMS | 17 | ||||
| -rw-r--r-- | src/ChangeLog | 5 | ||||
| -rw-r--r-- | src/emacs.c | 8 |
3 files changed, 12 insertions, 18 deletions
diff --git a/etc/PROBLEMS b/etc/PROBLEMS index 73da2666f97..73fe4615bf9 100644 --- a/etc/PROBLEMS +++ b/etc/PROBLEMS @@ -2378,8 +2378,6 @@ The fix is to install a newer version of ncurses, such as version 4.2. With certain recent Linux kernels (like the one of Redhat Fedora Core 1 and 2), the new "Exec-shield" functionality is enabled by default, which creates a different memory layout that breaks the emacs dumper. -The work-around explained here is not enough on Fedora Core 4. Read the -next item. Configure can overcome the problem of exec-shield if the architecture is x86 and the program setarch is present. On other architectures no @@ -2406,21 +2404,6 @@ command when running temacs like this: setarch i386 ./temacs --batch --load loadup [dump|bootstrap] -*** Fedora Core 4 GNU/Linux: Segfault during dumping. - -In addition to exec-shield explained above "Linux: Segfault during -`make bootstrap' under certain recent versions of the Linux kernel" -item, Linux kernel shipped with Fedora Core 4 randomizes the virtual -address space of a process. As the result dumping is failed even if -you turn off the exec-shield. In such case use -R option of setarch -command: - - setarch -R i386 ./temacs --batch --load loadup [dump|bootstrap] - -or - - setarch -R i386 make bootstrap - *** Fatal signal in the command temacs -l loadup inc dump. This command is the final stage of building Emacs. It is run by the diff --git a/src/ChangeLog b/src/ChangeLog index 85c3b747424..4c3c6a80d49 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,8 @@ +2005-07-01 Masatake YAMATO <jet@gyve.org> + + * emacs.c (main): Passing ADD_NO_RANDOMIZE to + `personality'. + 2005-06-30 Juri Linkov <juri@jurta.org> * xdisp.c (x_draw_vertical_border): If left fringe is not present diff --git a/src/emacs.c b/src/emacs.c index fd38268386a..89d6070b176 100644 --- a/src/emacs.c +++ b/src/emacs.c @@ -918,7 +918,13 @@ main (argc, argv { /* Set this so we only do this once. */ putenv("EMACS_HEAP_EXEC=true"); - personality (PER_LINUX32); + + /* A flag to turn off address randomization which is introduced + in linux kernel shipped with fedora core 4 */ +#define ADD_NO_RANDOMIZE 0x0040000 + personality (PER_LINUX32 | ADD_NO_RANDOMIZE); +#undef ADD_NO_RANDOMIZE + execvp (argv[0], argv); /* If the exec fails, try to dump anyway. */ |