From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-001 Signed-off-by: Peter Korsgaard BASH PATCH REPORT ================= Bash-Release: 4.4 Patch-ID: bash44-001 Bug-Reported-by: Sean Zha Bug-Reference-ID: Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2016-09/msg00107.html Bug-Description: Bash-4.4 changed the way the history list is initially allocated to reduce the number of reallocations and copies. Users who set HISTSIZE to a very large number to essentially unlimit the size of the history list will get memory allocation errors Patch (apply with `patch -p0'): *** a/bash-4.4/lib/readline/history.c 2015-12-28 13:50:31.000000000 -0500 --- b/lib/readline/history.c 2016-09-30 14:28:40.000000000 -0400 *************** *** 58,61 **** --- 58,63 ---- #define DEFAULT_HISTORY_INITIAL_SIZE 502 + #define MAX_HISTORY_INITIAL_SIZE 8192 + /* The number of slots to increase the_history by. */ #define DEFAULT_HISTORY_GROW_SIZE 50 *************** *** 308,312 **** { if (history_stifled && history_max_entries > 0) ! history_size = history_max_entries + 2; else history_size = DEFAULT_HISTORY_INITIAL_SIZE; --- 310,316 ---- { if (history_stifled && history_max_entries > 0) ! history_size = (history_max_entries > MAX_HISTORY_INITIAL_SIZE) ! ? MAX_HISTORY_INITIAL_SIZE ! : history_max_entries + 2; else history_size = DEFAULT_HISTORY_INITIAL_SIZE; *** a/bash-4.4/patchlevel.h 2016-06-22 14:51:03.000000000 -0400 --- b/patchlevel.h 2016-10-01 11:01:28.000000000 -0400 *************** *** 26,30 **** looks for to find the patch level (for the sccs version string). */ ! #define PATCHLEVEL 0 #endif /* _PATCHLEVEL_H_ */ --- 26,30 ---- looks for to find the patch level (for the sccs version string). */ ! #define PATCHLEVEL 1 #endif /* _PATCHLEVEL_H_ */