From https://ftp.gnu.org/gnu/bash/bash-4.4-patches/bash44-021 Signed-off-by: Peter Korsgaard BASH PATCH REPORT ================= Bash-Release: 4.4 Patch-ID: bash44-021 Bug-Reported-by: werner@suse.de Bug-Reference-ID: <201803281402.w2SE2VOa000476@noether.suse.de> Bug-Reference-URL: http://lists.gnu.org/archive/html/bug-bash/2018-03/msg00196.html Bug-Description: A SIGINT received inside a SIGINT trap handler can possibly cause the shell to loop. Patch (apply with `patch -p0'): *** bash-20180329/jobs.c 2018-02-11 18:07:22.000000000 -0500 --- b/jobs.c 2018-04-02 14:24:21.000000000 -0400 *************** *** 2690,2694 **** if (job_control == 0 || (subshell_environment&SUBSHELL_COMSUB)) { ! old_sigint_handler = set_signal_handler (SIGINT, wait_sigint_handler); waiting_for_child = 0; if (old_sigint_handler == SIG_IGN) --- b/2690,2704 ---- if (job_control == 0 || (subshell_environment&SUBSHELL_COMSUB)) { ! SigHandler *temp_sigint_handler; ! ! temp_sigint_handler = set_signal_handler (SIGINT, wait_sigint_handler); ! if (temp_sigint_handler == wait_sigint_handler) ! { ! #if defined (DEBUG) ! internal_warning ("wait_for: recursively setting old_sigint_handler to wait_sigint_handler: running_trap = %d", running_trap); ! #endif ! } ! else ! old_sigint_handler = temp_sigint_handler; waiting_for_child = 0; if (old_sigint_handler == SIG_IGN) *** 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 20 #endif /* _PATCHLEVEL_H_ */ --- b/26,30 ---- looks for to find the patch level (for the sccs version string). */ ! #define PATCHLEVEL 21 #endif /* _PATCHLEVEL_H_ */