On 19/01/17 11:54, Ian Erickson wrote:
Greetings; I've posted the following to R's bug tracking system (at
https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17210 ) and Martin Maechler
requested that I post to this list as well.
If I start R from the command line with --vanilla, then repeatedly execute the
following line:
det(matrix(nrow=10,ncol=10))
... I eventually get a crash, with error:
*** Error in `/usr/lib/R/bin/exec/R': malloc(): memory corruption:
0x0000000002399400 ***
The specific address in memory that is referenced varies. The number of times I
need to execute the above line before getting a crash also varies.
This occurs with a wide range of matrix dimensions; 10x10 is not the only size
that causes this issue.
output of R.version:
platform x86_64-pc-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 3
minor 3.2
year 2016
month 10
day 31
svn rev 71607
language R
version.string R version 3.3.2 (2016-10-31)
nickname Sincere Pumpkin Patch
I am running Linux Mint 17.3; my CPU is an Intel Core i7-2620m (Sandy Bridge).
My RAM is non-ECC. My R binary is from the CRAN Ubuntu repository at
cran.cnr.berkeley.edu . (r-base and r-base-core versions 3.3.2-1trusty0 )
I also see this issue running R within Emacs, as well as Rstudio.
This issue may be related to
https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16862 but I'm not certain.
The output of La_version() for me is:
[1] "3.5.0"
The output of:
system(paste("lsof -p", Sys.getpid(), "| grep -iE '(blas|lapack)'"))
is:
R 3636 <myusername> mem REG 252,0 39272 11930369
/usr/lib/R/modules/lapack.so
R 3636 <myusername> mem REG 252,0 5882272 11933488
/usr/lib/lapack/liblapack.so.3.0
R 3636 <myusername> mem REG 252,0 23108112 11929607
/usr/lib/openblas-base/libopenblas.so.0
Is anyone able to reproduce?
I can't. I tried
for(i in 1:100000) det(matrix(nrow=10,ncol=10))
and got no crash. I am running Ubuntu 16.04 (with Mate Desktop 1.12.1,
if that matters).
Output of sessionInfo():
R version 3.3.2 (2016-10-31)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04.1 LTS
locale:
[1] LC_CTYPE=en_NZ.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_NZ.UTF-8 LC_COLLATE=en_NZ.UTF-8
[5] LC_MONETARY=en_NZ.UTF-8 LC_MESSAGES=en_NZ.UTF-8
[7] LC_PAPER=en_NZ.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_NZ.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] misc_0.0-16
loaded via a namespace (and not attached):
[1] deldir_0.1-13 Matrix_1.2-7.1 tools_3.3.2
[4] mgcv_1.8-15 abind_1.4-5 spatstat_1.48-0.010
[7] rpart_4.1-10 nlme_3.1-128 grid_3.3.2
[10] polyclip_1.5-6 lattice_0.20-34 goftest_1.0-3
[13] tensor_1.5
cheers,
Rolf Turner
--
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
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