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arm64 - caught segfault - shiny app
I find out that the ragg is causing the shiny crashes on my arm64. The error seems to come from https://github.com/rstudio/shiny/blob/d4527cdc289c897b92a0b06eef4200537c0d98b1/R/imageutils.R#L1-L12. When I remove the ragg package from the R env, then the shiny app works correctly. Of course reinstalling of the ragg is not helping.
Error message from the shiny app:
*** caught segfault ***
address 0xc0005ffe836b8040, cause 'invalid permissions'
Traceback:
1: (function (filename = "Rplot%03d.png", width = 480, height = 480, units = "px", pointsize = 12, background = "white", res = 72, scaling = 1, bitsize = 8, bg) { if (environmentName(parent.env(parent.frame())) == "knitr" && deparse(sys.call(), nlines = 1, width.cutoff = 500) == "dev(filename = filename, width = dim[1], height = dim[2], ...)") { units <- "in" } file <- validate_path(filename) if (!bitsize %in% c(8, 16)) { stop("Only 8 and 16 bit is supported", call. = FALSE) } dim <- get_dims(width, height, units, res) background <- if (missing(bg)) background else bg .Call("agg_png_c", file, dim[1], dim[2], as.numeric(pointsize), background, as.numeric(res), as.numeric(scaling), as.integer(bitsize), PACKAGE = "ragg") invisible()})(filename = "/var/folders/ym/kndydf1d4lz25qklb25kqmz80000gn/T//RtmpUGIyib/file10cdf1cecf5db.png", width = numeric(0), height = numeric(0), res = 158.4)
2: do.call(pngfun, args)
3: startPNG(outfile, width * pixelratio, height * pixelratio, res = res * pixelratio, ...)
4: drawPlot(name = "teal-main_ui-root-adverse_events-ae_by_subgroup-out-plot_main", session = <environment>, func = function () { ..stacktraceon..(renderPlot()) }, width = NULL, height = NULL, alt = NA, pixelratio = 2.2, res = 72)
sessionInfo:
R version 4.2.1 (2022-06-23)
Platform: aarch64-apple-darwin20 (64-bit)
Running under: macOS Monterey 12.5.1
Matrix products: default
BLAS: /Library/Frameworks/R.framework/Versions/4.2-arm64/Resources/lib/libRblas.0.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/4.2-arm64/Resources/lib/libRlapack.dylib
locale:
[1] C/UTF-8/C/C/C/C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] ragg_1.2.2 shiny_1.7.2
loaded via a namespace (and not attached):
[1] Rcpp_1.0.9 digest_0.6.29 later_1.3.0 mime_0.12
[5] R6_2.5.1 lifecycle_1.0.1 xtable_1.8-4 magrittr_2.0.3
[9] rlang_1.0.5 cli_3.3.0 promises_1.2.0.1 ellipsis_0.3.2
[13] textshaping_0.3.6 httpuv_1.6.5 fastmap_1.1.0 compiler_4.2.1
[17] systemfonts_1.0.4 htmltools_0.5.3
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Can you provide me with the means to reproduce this locally (on arm64). If not I'll not be able to debug the issue
Sorry, It is very hard to reproduce it with the base shiny (simplified code). Feel free to close it. At least we have a record which could be find by others, and then possibly more investigation applied.
looks to be linked with https://github.com/r-lib/ragg/issues/82
ragg::agg_png(res = NULL, units = 'in')
will crash the R session, 80 percent is connected with my problem will check it further
> ragg::agg_png(res = NULL, units = 'in')
*** caught segfault ***
address 0xc0005ffe80dddb20, cause 'invalid permissions'
Traceback:
1: ragg::agg_png(res = NULL, units = "in")
An irrecoverable exception occurred. R is aborting now ...
zsh: segmentation fault R -e "ragg::agg_png(res = NULL, units = 'in')"
EDIT
and other arguments could not be NULL too, like width and height
Thanks - I may not check the red correctly before passing it into the C code
The same for other arguments width and height, NULL will crash the R session such value is possible in shiny.