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bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le
From: |
Paul Eggert |
Subject: |
bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le |
Date: |
Sat, 27 Oct 2018 13:26:07 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 |
Wonderful. Yet another reason we need to get the pdumper branch working. Anyway:
1. Can you use strace and/or GDB to investigate how ./temacs is disabling
address randomization? In the emacs-26 branch, if you run this command in src:
strace -f -o /tmp/tr ./temacs --batch --load loadup bootstrap
the output file /tmp/tr should contain something like this:
18406 personality(0xffffffff) = 0 (PER_LINUX)
18406 personality(PER_LINUX|ADDR_NO_RANDOMIZE) = 0 (PER_LINUX)
18406 personality(0xffffffff) = 0x40000 (PER_LINUX|ADDR_NO_RANDOMIZE)
18406 execve("./temacs", ["./temacs", "--batch", "--load", "loadup",
"bootstrap"], 0xc521b0 /* 80 vars */) = 0
and later on there should be one more call to 'personality', like this:
18406 personality(0xffffffff) = 0x40000 (PER_LINUX|ADDR_NO_RANDOMIZE)
If it doesn't look like this, please investigate why, by using GDB.
2. What filesystem are you building in, and does it support xattrs? What is the
output of the following in your build directory?
touch x
setfattr -n user.variable -v value x
getfattr -n user.variable x
3. What is the output of "getfattr -d src/temacs"? It should be something like
this:
# file: src/temacs
user.pax.flags="er"
If not, we need to figure out why not.
4. The output of 'make V=1' should contain something like the following. If not,
please investigate why not.
setfattr -n user.pax.flags -v er temacs
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/27
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/27
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le,
Paul Eggert <=
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Paul Eggert, 2018/10/28
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/28
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Paul Eggert, 2018/10/28
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/29
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Paul Eggert, 2018/10/29
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/28
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Paul Eggert, 2018/10/29
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/29
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Paul Eggert, 2018/10/30
- bug#33174: 27.0.50; Dump fails on GNU/Linux ppc64le, Thomas Fitzsimmons, 2018/10/30