Package: bash Version: 4.4-1 Severity: serious Hello,
apparently bash 4.4 as available in Debian Stretch introduced a regression compared to 4.3 from Debian Jessie: when setting $HISTSIZE to a big value (e.g. 99999999 as suggested in a lot of docs out there on the web), the resulting bash process seems to allocate way to much memory, approximately 800MB each. I consider this a severe memory leak/consumption bug, thus setting severity to serious. Feel free to lower severity if you disagree. It's not enough to set the environment variable $HISTSIZE in a running bash session. Instead, it needs to set at invocation of the shell, e.g. by setting it in the ~/.bashrc: HISTSIZE=99999999 Here's the process status page of a process with HISTSIZE=99999999: $ cat /proc/3156/status Name: bash Umask: 0022 State: S (sleeping) Tgid: 3156 Ngid: 0 Pid: 3156 PPid: 2796 TracerPid: 0 Uid: 1000 1000 1000 1000 Gid: 1000 1000 1000 1000 FDSize: 256 Groups: 24 25 27 29 30 44 46 107 111 123 125 126 127 1000 NStgid: 3156 NSpid: 3156 NSpgid: 3156 NSsid: 3156 VmPeak: 1071904 kB VmSize: 1071868 kB VmLck: 0 kB VmPin: 0 kB VmHWM: 787328 kB VmRSS: 787328 kB RssAnon: 783640 kB RssFile: 3688 kB RssShmem: 0 kB VmData: 1050920 kB VmStk: 136 kB VmExe: 1024 kB VmLib: 2116 kB VmPTE: 1600 kB VmPMD: 16 kB VmSwap: 0 kB HugetlbPages: 0 kB Threads: 1 SigQ: 0/45722 SigPnd: 0000000000000000 ShdPnd: 0000000000000000 SigBlk: 0000000000010000 SigIgn: 0000000000380004 SigCgt: 000000004b817efb CapInh: 0000000000000000 CapPrm: 0000000000000000 CapEff: 0000000000000000 CapBnd: 0000003fffffffff CapAmb: 0000000000000000 Seccomp: 0 Cpus_allowed: ff Cpus_allowed_list: 0-7 Mems_allowed: 00000000,00000001 Mems_allowed_list: 0 voluntary_ctxt_switches: 30 nonvoluntary_ctxt_switches: 13 And here you find the status page of a bash process with default HISTSIZE=1000: $ cat /proc/6888/status Name: bash Umask: 0022 State: S (sleeping) Tgid: 6888 Ngid: 0 Pid: 6888 PPid: 2796 TracerPid: 0 Uid: 1000 1000 1000 1000 Gid: 1000 1000 1000 1000 FDSize: 256 Groups: 24 25 27 29 30 44 46 107 111 123 125 126 127 1000 NStgid: 6888 NSpid: 6888 NSpgid: 6888 NSsid: 6888 VmPeak: 23220 kB VmSize: 23156 kB VmLck: 0 kB VmPin: 0 kB VmHWM: 6028 kB VmRSS: 6028 kB RssAnon: 2248 kB RssFile: 3780 kB RssShmem: 0 kB VmData: 2208 kB VmStk: 136 kB VmExe: 1024 kB VmLib: 2116 kB VmPTE: 64 kB VmPMD: 12 kB VmSwap: 0 kB HugetlbPages: 0 kB Threads: 1 SigQ: 0/45722 SigPnd: 0000000000000000 ShdPnd: 0000000000000000 SigBlk: 0000000000010000 SigIgn: 0000000000380004 SigCgt: 000000004b817efb CapInh: 0000000000000000 CapPrm: 0000000000000000 CapEff: 0000000000000000 CapBnd: 0000003fffffffff CapAmb: 0000000000000000 Seccomp: 0 Cpus_allowed: ff Cpus_allowed_list: 0-7 Mems_allowed: 00000000,00000001 Mems_allowed_list: 0 voluntary_ctxt_switches: 57 nonvoluntary_ctxt_switches: 7 -- System Information: Debian Release: stretch/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_US.UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages bash depends on: ii base-files 9.6 ii dash 0.5.8-2.3 ii debianutils 4.8 ii libc6 2.24-5 ii libtinfo5 6.0+20160917-1 Versions of packages bash recommends: ii bash-completion 1:2.1-4.3 Versions of packages bash suggests: pn bash-doc <none> -- no debconf information
