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gjasny/reproducer.txt

Created February 26, 2021 11:18
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Ubuntu Hirsute bug
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reproducer.txt
$ docker run -ti ubuntu:hirsute bash
root@008ec583a743:/# apt update
root@008ec583a743:/# sh -c 'if [ -x /usr/bin/true ]; then echo yes; else echo no; fi'
yes
root@008ec583a743:/# apt install -y nano # or any other package
root@008ec583a743:/# sh -c 'if [ -x /usr/bin/true ]; then echo yes; else echo no; fi'
no
root@008ec583a743:/# if [ -x /usr/bin/true ]; then echo yes; else echo no; fi
yes
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gjasny commented Feb 26, 2021 

strace -f sh -c 'if [ -x /usr/bin/true ]; then echo yes; else echo no; fi'
...
faccessat2(AT_FDCWD, "/usr/bin/true", X_OK, AT_EACCESS) = -1 EPERM (Operation not permitted)

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