This bug was originally reported to bug-guix@gnu.org. Copying here.
Guix bug report: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=50729

I suspect it may be a bug in my kernel if not a bug in guile itself.

The test case fails on both master and v3.0.7 (git).

./build-aux/config.guess
x86_64-pc-linux-gnu

./config.status --config
--enable-mini-gmp
PKG_CONFIG_PATH=/gnu/store/06prap3plk2f59n8m3diqzqd6dxvklhn-profile/lib/pkgconfig

---------

This test case is consistently failing on my machine when building guile:

./pre-inst-env guix build guile

...
Running suspendable-ports.test
UNRESOLVED: suspendable-ports.test: non-revealed port is closed
ERROR: suspendable-ports.test: revealed port fdes not closed -
arguments: ((system-error "seek" "~A" ("Bad file descriptor") (9)))

Totals for this test run:
passes:                 42439
failures:               0
unexpected passes:      0
expected failures:      10
unresolved test cases:  554
untested test cases:    1
unsupported test cases: 1
errors:                 1

Kernel: Linux bb11 5.14.3 #1 SMP 1 x86_64 GNU/Linux

Guix commit: c4b7bcc2569e40c6b925bc9e8fde01c5744c29f7

Log file attached.

--
Sincerely,
Ryan Sundberg