Package: nocache/1.0-1,libc6/2.28-2 Severity: critical Justification: breaks unrelated software Usertags: hang The upgrade from libc6 2.27-8 to 2.28-2 breaks nocache; some programs, when run under it (but not all of them), hang in a call to read/futex: # nocache sleep 1 # apt show nowcache &> /dev/null # nocache apt show nowcache & [1] 3971 # strace -p 3971 strace: Process 3971 attached read(5, ^Cstrace: Process 3971 detached <detached ...> # ls -l /proc/3971/fd/5 lr-x------ 1 root root 64 Dec 14 05:28 /proc/3971/fd/5 -> 'pipe:[144396456]' # cat /proc/3971/fdinfo/5 pos: 0 flags: 00 mnt_id: 12 # pgrep --list-full --parent 3971 3972 apt show nowcache # strace -p 3972 strace: Process 3972 attached futex(0x7f451a949940, FUTEX_WAIT_PRIVATE, 2, NULL ^Cstrace: Process 3972 detached <detached ...> # ls -l /proc/3972/fd/2 lrwx------ 1 root root 64 Dec 14 05:29 /proc/3972/fd/2 -> /dev/pts/2 # cat /proc/3972/fdinfo/2 pos: 0 flags: 0102002 mnt_id: 22 -- System Information: Debian Release: buster/sid APT prefers testing-debug APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental') Architecture: amd64 (x86_64) Kernel: Linux 4.18.0-3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages nocache depends on: ii libc6 2.28-2 nocache recommends no packages. nocache suggests no packages. -- no debconf information -- bye, pabs https://wiki.debian.org/PaulWise
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