import bash-4.4.19-14.el8_3
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CentOS Sources
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136
SOURCES/bash-4.4-patch-20.patch
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136
SOURCES/bash-4.4-patch-20.patch
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@ -0,0 +1,136 @@
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From 354efb96f1e4574f458e994163bbe31c76769573 Mon Sep 17 00:00:00 2001
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From: Chet Ramey <chet.ramey@case.edu>
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Date: Fri, 1 Jun 2018 10:19:56 -0400
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Subject: [PATCH] saved background process status hash table loop fixes
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---
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jobs.c | 62 +++++++++++++++++++++++++++++++++++++++++-----------
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patchlevel.h | 2 +-
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2 files changed, 50 insertions(+), 14 deletions(-)
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diff --git a/jobs.c b/jobs.c
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index fc966036..2684632d 100644
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--- a/jobs.c
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+++ b/jobs.c
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@@ -812,8 +812,22 @@ bgp_add (pid, status)
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ps_index_t *bucket, psi;
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struct pidstat *ps;
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- bucket = pshash_getbucket (pid);
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- psi = bgp_getindex ();
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+ /* bucket == existing chain of pids hashing to same value
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+ psi = where were going to put this pid/status */
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+
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+ bucket = pshash_getbucket (pid); /* index into pidstat_table */
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+ psi = bgp_getindex (); /* bgpids.head, index into storage */
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+
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+ /* XXX - what if psi == *bucket? */
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+ if (psi == *bucket)
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+ {
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+#ifdef DEBUG
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+ internal_warning ("hashed pid %d (pid %d) collides with bgpids.head, skipping", psi, pid);
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+#endif
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+ bgpids.storage[psi].pid = NO_PID; /* make sure */
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+ psi = bgp_getindex (); /* skip to next one */
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+ }
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+
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ps = &bgpids.storage[psi];
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ps->pid = pid;
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@@ -841,32 +855,47 @@ pshash_delindex (psi)
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ps_index_t psi;
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{
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struct pidstat *ps;
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+ ps_index_t *bucket;
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ps = &bgpids.storage[psi];
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if (ps->pid == NO_PID)
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return;
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- if (ps->bucket_next != NO_PID)
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+ if (ps->bucket_next != NO_PIDSTAT)
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bgpids.storage[ps->bucket_next].bucket_prev = ps->bucket_prev;
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- if (ps->bucket_prev != NO_PID)
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+ if (ps->bucket_prev != NO_PIDSTAT)
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bgpids.storage[ps->bucket_prev].bucket_next = ps->bucket_next;
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else
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- *(pshash_getbucket (ps->pid)) = ps->bucket_next;
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+ {
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+ bucket = pshash_getbucket (ps->pid);
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+ *bucket = ps->bucket_next; /* deleting chain head in hash table */
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+ }
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+
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+ /* clear out this cell, just in case */
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+ ps->pid = NO_PID;
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+ ps->bucket_next = ps->bucket_prev = NO_PIDSTAT;
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}
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static int
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bgp_delete (pid)
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pid_t pid;
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{
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- ps_index_t psi;
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+ ps_index_t psi, orig_psi;
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if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
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return 0;
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/* Search chain using hash to find bucket in pidstat_table */
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- for (psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
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- if (bgpids.storage[psi].pid == pid)
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- break;
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+ for (orig_psi = psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
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+ {
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+ if (bgpids.storage[psi].pid == pid)
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+ break;
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+ if (orig_psi == bgpids.storage[psi].bucket_next) /* catch reported bug */
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+ {
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+ internal_warning ("bgp_delete: LOOP: psi (%d) == storage[psi].bucket_next", psi);
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+ return 0;
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+ }
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+ }
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if (psi == NO_PIDSTAT)
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return 0; /* not found */
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@@ -904,15 +933,22 @@ static int
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bgp_search (pid)
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pid_t pid;
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{
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- ps_index_t psi;
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+ ps_index_t psi, orig_psi;
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if (bgpids.storage == 0 || bgpids.nalloc == 0 || bgpids.npid == 0)
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return -1;
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/* Search chain using hash to find bucket in pidstat_table */
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- for (psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
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- if (bgpids.storage[psi].pid == pid)
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- return (bgpids.storage[psi].status);
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+ for (orig_psi = psi = *(pshash_getbucket (pid)); psi != NO_PIDSTAT; psi = bgpids.storage[psi].bucket_next)
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+ {
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+ if (bgpids.storage[psi].pid == pid)
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+ return (bgpids.storage[psi].status);
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+ if (orig_psi == bgpids.storage[psi].bucket_next) /* catch reported bug */
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+ {
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+ internal_warning ("bgp_search: LOOP: psi (%d) == storage[psi].bucket_next", psi);
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+ return -1;
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+ }
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+ }
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return -1;
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}
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diff --git a/patchlevel.h b/patchlevel.h
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index a711c495..4a65dc0f 100644
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--- a/patchlevel.h
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+++ b/patchlevel.h
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@@ -25,6 +25,6 @@
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regexp `^#define[ ]*PATCHLEVEL', since that's what support/mkversion.sh
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looks for to find the patch level (for the sccs version string). */
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-#define PATCHLEVEL 19
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+#define PATCHLEVEL 20
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#endif /* _PATCHLEVEL_H_ */
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--
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2.29.2
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@ -1,41 +0,0 @@
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diff --git a/configure.ac b/configure.ac
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index e5162c4..b82a33b 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -799,10 +799,13 @@ AC_CHECK_DECLS([confstr])
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AC_CHECK_DECLS([printf])
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AC_CHECK_DECLS([sbrk])
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AC_CHECK_DECLS([setregid])
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-AC_CHECK_DECLS[(setresuid, setresgid])
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+dnl AC_CHECK_DECLS[(setresuid])
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+dnl AC_CHECK_DECLS[(setresgid])
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AC_CHECK_DECLS([strcpy])
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AC_CHECK_DECLS([strsignal])
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+AC_CHECK_FUNCS(setresuid setresgid)
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+
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dnl Extra test to detect the horribly broken HP/UX 11.00 strtold(3)
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AC_CHECK_DECLS([strtold], [
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AC_MSG_CHECKING([for broken strtold])
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diff --git a/shell.c b/shell.c
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index 484d8a9..5c24922 100644
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--- a/shell.c
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+++ b/shell.c
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@@ -1286,7 +1286,7 @@ disable_priv_mode ()
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{
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int e;
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-#if HAVE_DECL_SETRESUID
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+#if HAVE_SETRESUID
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if (setresuid (current_user.uid, current_user.uid, current_user.uid) < 0)
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#else
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if (setuid (current_user.uid) < 0)
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@@ -1299,7 +1299,7 @@ disable_priv_mode ()
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exit (e);
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#endif
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}
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-#if HAVE_DECL_SETRESGID
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+#if HAVE_SETRESGID
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if (setresgid (current_user.gid, current_user.gid, current_user.gid) < 0)
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#else
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if (setgid (current_user.gid) < 0)
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@ -21,7 +21,7 @@ Source3: dot-bash_logout
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# Official upstream patches
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# Patches are converted to apply with '-p1'
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%{lua:for i=1,19 do print(string.format("Patch%u: bash-4.4-patch-%u.patch\n", i, i)) end}
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%{lua:for i=1,20 do print(string.format("Patch%u: bash-4.4-patch-%u.patch\n", i, i)) end}
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# Other patches
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Patch101: bash-2.02-security.patch
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@ -106,7 +106,6 @@ Patch134: bash-5.0-shellpid-subshell.patch
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# 1793943 - CVE-2019-18276: when effective UID is not equal to its real UID the saved UID is
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# not dropped
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Patch135: bash-5.0-cve-2019-18276.patch
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Patch136: bash-5.0-cve-2019-18276-2.patch
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# 1890888 - Took long time to return when bash -c 'exit 2 & wait $!' run in the big size LimitNPROC
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# values
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@ -335,14 +334,14 @@ end
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%{_libdir}/pkgconfig/%{name}.pc
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%changelog
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* Wed Nov 04 2020 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-14
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* Fri Mar 26 2021 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-14
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- Fix infinite loop in long running scripts
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Resolves: #1943495
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* Wed Nov 04 2020 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-13
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- Fix hang when limit for nproc is very high
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Resolves: #1890888
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* Fri Oct 09 2020 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-13
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- Correctly drop saved UID when effective UID is not equal to its real UID
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Resolves: #1793943
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* Mon Jun 22 2020 Siteshwar Vashisht <svashisht@redhat.com> - 4.4.19-12
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- Avoid duplicating user path entries
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Resolves: #1667008
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