This file tracks updates from the "release/2.29/master" branch:
https://sourceware.org/git/?p=glibc.git;a=shortlog;h=refs/heads/release/2.29/master
Abridged commits are appended to this file.
From ec894251ef11723d10df04fcfd7bd2030c6e43ff Mon Sep 17 00:00:00 2001
From: Carlos O'Donell <carlos@redhat.com>
Date: Mon, 21 Jan 2019 22:50:12 -0500
Subject: [PATCH] nptl: Fix pthread_rwlock_try*lock stalls (Bug 23844)
diff --git a/nptl/pthread_rwlock_tryrdlock.c b/nptl/pthread_rwlock_tryrdlock.c
index 368862ff07..2f94f17f36 100644
--- a/nptl/pthread_rwlock_tryrdlock.c
+++ b/nptl/pthread_rwlock_tryrdlock.c
@@ -94,15 +94,22 @@ __pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock)
/* Same as in __pthread_rwlock_rdlock_full:
We started the read phase, so we are also responsible for
updating the write-phase futex. Relaxed MO is sufficient.
- Note that there can be no other reader that we have to wake
- because all other readers will see the read phase started by us
- (or they will try to start it themselves); if a writer started
- the read phase, we cannot have started it. Furthermore, we
- cannot discard a PTHREAD_RWLOCK_FUTEX_USED flag because we will
- overwrite the value set by the most recent writer (or the readers
- before it in case of explicit hand-over) and we know that there
- are no waiting readers. */
- atomic_store_relaxed (&rwlock->__data.__wrphase_futex, 0);
+ We have to do the same steps as a writer would when handing over the
+ read phase to use because other readers cannot distinguish between
+ us and the writer.
+ Note that __pthread_rwlock_tryrdlock callers will not have to be
+ woken up because they will either see the read phase started by us
+ or they will try to start it themselves; however, callers of
+ __pthread_rwlock_rdlock_full just increase the reader count and then
+ check what state the lock is in, so they cannot distinguish between
+ us and a writer that acquired and released the lock in the
+ meantime. */
+ if ((atomic_exchange_relaxed (&rwlock->__data.__wrphase_futex, 0)
+ & PTHREAD_RWLOCK_FUTEX_USED) != 0)
+ {
+ int private = __pthread_rwlock_get_private (rwlock);
+ futex_wake (&rwlock->__data.__wrphase_futex, INT_MAX, private);
+ }
}
return 0;
diff --git a/nptl/pthread_rwlock_trywrlock.c b/nptl/pthread_rwlock_trywrlock.c
index fd37a71ce4..fae475cc70 100644
--- a/nptl/pthread_rwlock_trywrlock.c
+++ b/nptl/pthread_rwlock_trywrlock.c
@@ -46,8 +46,15 @@ __pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock)
&rwlock->__data.__readers, &r,
r | PTHREAD_RWLOCK_WRPHASE | PTHREAD_RWLOCK_WRLOCKED))
{
+ /* We have become the primary writer and we cannot have shared
+ the PTHREAD_RWLOCK_FUTEX_USED flag with someone else, so we
+ can simply enable blocking (see full wrlock code). */
atomic_store_relaxed (&rwlock->__data.__writers_futex, 1);
- atomic_store_relaxed (&rwlock->__data.__wrphase_futex, 1);
+ /* If we started a write phase, we need to enable readers to
+ wait. If we did not, we must not change it because other threads
+ may have set the PTHREAD_RWLOCK_FUTEX_USED in the meantime. */
+ if ((r & PTHREAD_RWLOCK_WRPHASE) == 0)
+ atomic_store_relaxed (&rwlock->__data.__wrphase_futex, 1);
atomic_store_relaxed (&rwlock->__data.__cur_writer,
THREAD_GETMEM (THREAD_SELF, tid));
return 0;
diff --git a/support/Makefile b/support/Makefile
index 432cf2fe6c..c15b93647c 100644
--- a/support/Makefile
+++ b/support/Makefile
@@ -129,6 +129,7 @@ libsupport-routines = \
xpthread_mutexattr_settype \
xpthread_once \
xpthread_rwlock_init \
+ xpthread_rwlock_destroy \
xpthread_rwlock_rdlock \
xpthread_rwlock_unlock \
xpthread_rwlock_wrlock \
diff --git a/support/xpthread_rwlock_destroy.c b/support/xpthread_rwlock_destroy.c
new file mode 100644
index 0000000000..6d6e953569
--- /dev/null
+++ b/support/xpthread_rwlock_destroy.c
@@ -0,0 +1,26 @@
+/* pthread_rwlock_destroy with error checking.
+ Copyright (C) 2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/xthread.h>
+
+void
+xpthread_rwlock_destroy (pthread_rwlock_t *rwlock)
+{
+ xpthread_check_return ("pthread_rwlock_destroy",
+ pthread_rwlock_destroy (rwlock));
+}
diff --git a/support/xthread.h b/support/xthread.h
index 47c23235f3..9fe1f68b3b 100644
--- a/support/xthread.h
+++ b/support/xthread.h
@@ -84,6 +84,7 @@ void xpthread_rwlockattr_setkind_np (pthread_rwlockattr_t *attr, int pref);
void xpthread_rwlock_wrlock (pthread_rwlock_t *rwlock);
void xpthread_rwlock_rdlock (pthread_rwlock_t *rwlock);
void xpthread_rwlock_unlock (pthread_rwlock_t *rwlock);
+void xpthread_rwlock_destroy (pthread_rwlock_t *rwlock);
__END_DECLS
From 44113a8ba24af23d7bbb174f9087a6b83a76289a Mon Sep 17 00:00:00 2001
From: Stefan Liebler <stli@linux.ibm.com>
Date: Thu, 7 Feb 2019 15:18:36 +0100
Subject: [PATCH] Add compiler barriers around modifications of the robust
mutex list for pthread_mutex_trylock. [BZ #24180]
diff --git a/nptl/pthread_mutex_trylock.c b/nptl/pthread_mutex_trylock.c
index 8fe43b8f0f..bf2869eca2 100644
--- a/nptl/pthread_mutex_trylock.c
+++ b/nptl/pthread_mutex_trylock.c
@@ -94,6 +94,9 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
case PTHREAD_MUTEX_ROBUST_ADAPTIVE_NP:
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending,
&mutex->__data.__list.__next);
+ /* We need to set op_pending before starting the operation. Also
+ see comments at ENQUEUE_MUTEX. */
+ __asm ("" ::: "memory");
oldval = mutex->__data.__lock;
do
@@ -119,7 +122,12 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
/* But it is inconsistent unless marked otherwise. */
mutex->__data.__owner = PTHREAD_MUTEX_INCONSISTENT;
+ /* We must not enqueue the mutex before we have acquired it.
+ Also see comments at ENQUEUE_MUTEX. */
+ __asm ("" ::: "memory");
ENQUEUE_MUTEX (mutex);
+ /* We need to clear op_pending after we enqueue the mutex. */
+ __asm ("" ::: "memory");
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
/* Note that we deliberately exist here. If we fall
@@ -135,6 +143,8 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
int kind = PTHREAD_MUTEX_TYPE (mutex);
if (kind == PTHREAD_MUTEX_ROBUST_ERRORCHECK_NP)
{
+ /* We do not need to ensure ordering wrt another memory
+ access. Also see comments at ENQUEUE_MUTEX. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending,
NULL);
return EDEADLK;
@@ -142,6 +152,8 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
if (kind == PTHREAD_MUTEX_ROBUST_RECURSIVE_NP)
{
+ /* We do not need to ensure ordering wrt another memory
+ access. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending,
NULL);
@@ -160,6 +172,9 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
id, 0);
if (oldval != 0 && (oldval & FUTEX_OWNER_DIED) == 0)
{
+ /* We haven't acquired the lock as it is already acquired by
+ another owner. We do not need to ensure ordering wrt another
+ memory access. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return EBUSY;
@@ -173,13 +188,20 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
if (oldval == id)
lll_unlock (mutex->__data.__lock,
PTHREAD_ROBUST_MUTEX_PSHARED (mutex));
+ /* FIXME This violates the mutex destruction requirements. See
+ __pthread_mutex_unlock_full. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return ENOTRECOVERABLE;
}
}
while ((oldval & FUTEX_OWNER_DIED) != 0);
+ /* We must not enqueue the mutex before we have acquired it.
+ Also see comments at ENQUEUE_MUTEX. */
+ __asm ("" ::: "memory");
ENQUEUE_MUTEX (mutex);
+ /* We need to clear op_pending after we enqueue the mutex. */
+ __asm ("" ::: "memory");
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
mutex->__data.__owner = id;
@@ -211,10 +233,15 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
}
if (robust)
- /* Note: robust PI futexes are signaled by setting bit 0. */
- THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending,
- (void *) (((uintptr_t) &mutex->__data.__list.__next)
- | 1));
+ {
+ /* Note: robust PI futexes are signaled by setting bit 0. */
+ THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending,
+ (void *) (((uintptr_t) &mutex->__data.__list.__next)
+ | 1));
+ /* We need to set op_pending before starting the operation. Also
+ see comments at ENQUEUE_MUTEX. */
+ __asm ("" ::: "memory");
+ }
oldval = mutex->__data.__lock;
@@ -223,12 +250,16 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
{
if (kind == PTHREAD_MUTEX_ERRORCHECK_NP)
{
+ /* We do not need to ensure ordering wrt another memory
+ access. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return EDEADLK;
}
if (kind == PTHREAD_MUTEX_RECURSIVE_NP)
{
+ /* We do not need to ensure ordering wrt another memory
+ access. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
/* Just bump the counter. */
@@ -250,6 +281,9 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
{
if ((oldval & FUTEX_OWNER_DIED) == 0)
{
+ /* We haven't acquired the lock as it is already acquired by
+ another owner. We do not need to ensure ordering wrt another
+ memory access. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return EBUSY;
@@ -270,6 +304,9 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
if (INTERNAL_SYSCALL_ERROR_P (e, __err)
&& INTERNAL_SYSCALL_ERRNO (e, __err) == EWOULDBLOCK)
{
+ /* The kernel has not yet finished the mutex owner death.
+ We do not need to ensure ordering wrt another memory
+ access. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return EBUSY;
@@ -287,7 +324,12 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
/* But it is inconsistent unless marked otherwise. */
mutex->__data.__owner = PTHREAD_MUTEX_INCONSISTENT;
+ /* We must not enqueue the mutex before we have acquired it.
+ Also see comments at ENQUEUE_MUTEX. */
+ __asm ("" ::: "memory");
ENQUEUE_MUTEX (mutex);
+ /* We need to clear op_pending after we enqueue the mutex. */
+ __asm ("" ::: "memory");
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
/* Note that we deliberately exit here. If we fall
@@ -310,13 +352,20 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
PTHREAD_ROBUST_MUTEX_PSHARED (mutex)),
0, 0);
+ /* To the kernel, this will be visible after the kernel has
+ acquired the mutex in the syscall. */
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
return ENOTRECOVERABLE;
}
if (robust)
{
+ /* We must not enqueue the mutex before we have acquired it.
+ Also see comments at ENQUEUE_MUTEX. */
+ __asm ("" ::: "memory");
ENQUEUE_MUTEX_PI (mutex);
+ /* We need to clear op_pending after we enqueue the mutex. */
+ __asm ("" ::: "memory");
THREAD_SETMEM (THREAD_SELF, robust_head.list_op_pending, NULL);
}
From c096b008d2671028c21ac8cf01f18a2083e73c44 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 8 Feb 2019 12:54:41 +0100
Subject: [PATCH] nptl: Avoid fork handler lock for async-signal-safe fork [BZ
#24161]
--- a/nptl/register-atfork.c
+++ b/nptl/register-atfork.c
@@ -107,13 +107,14 @@ __unregister_atfork (void *dso_handle)
}
void
-__run_fork_handlers (enum __run_fork_handler_type who)
+__run_fork_handlers (enum __run_fork_handler_type who, _Bool do_locking)
{
struct fork_handler *runp;
if (who == atfork_run_prepare)
{
- lll_lock (atfork_lock, LLL_PRIVATE);
+ if (do_locking)
+ lll_lock (atfork_lock, LLL_PRIVATE);
size_t sl = fork_handler_list_size (&fork_handlers);
for (size_t i = sl; i > 0; i--)
{
@@ -133,7 +134,8 @@ __run_fork_handlers (enum __run_fork_handler_type who)
else if (who == atfork_run_parent && runp->parent_handler)
runp->parent_handler ();
}
- lll_unlock (atfork_lock, LLL_PRIVATE);
+ if (do_locking)
+ lll_unlock (atfork_lock, LLL_PRIVATE);
}
}
diff --git a/sysdeps/nptl/fork.c b/sysdeps/nptl/fork.c
index bd68f18b45..14b69a6f89 100644
--- a/sysdeps/nptl/fork.c
+++ b/sysdeps/nptl/fork.c
@@ -55,7 +55,7 @@ __libc_fork (void)
but our current fork implementation is not. */
bool multiple_threads = THREAD_GETMEM (THREAD_SELF, header.multiple_threads);
- __run_fork_handlers (atfork_run_prepare);
+ __run_fork_handlers (atfork_run_prepare, multiple_threads);
/* If we are not running multiple threads, we do not have to
preserve lock state. If fork runs from a signal handler, only
@@ -134,7 +134,7 @@ __libc_fork (void)
__rtld_lock_initialize (GL(dl_load_lock));
/* Run the handlers registered for the child. */
- __run_fork_handlers (atfork_run_child);
+ __run_fork_handlers (atfork_run_child, multiple_threads);
}
else
{
@@ -149,7 +149,7 @@ __libc_fork (void)
}
/* Run the handlers registered for the parent. */
- __run_fork_handlers (atfork_run_parent);
+ __run_fork_handlers (atfork_run_parent, multiple_threads);
}
return pid;
diff --git a/sysdeps/nptl/fork.h b/sysdeps/nptl/fork.h
index a1c3b26b68..99ed76034b 100644
--- a/sysdeps/nptl/fork.h
+++ b/sysdeps/nptl/fork.h
@@ -52,10 +52,12 @@ enum __run_fork_handler_type
- atfork_run_child: run all the CHILD_HANDLER and unlocks the internal
lock.
- atfork_run_parent: run all the PARENT_HANDLER and unlocks the internal
- lock. */
-extern void __run_fork_handlers (enum __run_fork_handler_type who)
- attribute_hidden;
+ lock.
+
+ Perform locking only if DO_LOCKING. */
+extern void __run_fork_handlers (enum __run_fork_handler_type who,
+ _Bool do_locking) attribute_hidden;
/* C library side function to register new fork handlers. */
extern int __register_atfork (void (*__prepare) (void),
From 067fc32968b601493f4b247a3ac00caeea3f3d61 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 15 Feb 2019 21:27:01 +0100
Subject: [PATCH] nptl: Fix invalid Systemtap probe in pthread_join [BZ #24211]
diff --git a/nptl/pthread_join_common.c b/nptl/pthread_join_common.c
index ecb78ffba5..366feb376b 100644
--- a/nptl/pthread_join_common.c
+++ b/nptl/pthread_join_common.c
@@ -86,6 +86,7 @@ __pthread_timedjoin_ex (pthread_t threadid, void **thread_return,
pthread_cleanup_pop (0);
}
+ void *pd_result = pd->result;
if (__glibc_likely (result == 0))
{
/* We mark the thread as terminated and as joined. */
@@ -93,7 +94,7 @@ __pthread_timedjoin_ex (pthread_t threadid, void **thread_return,
/* Store the return value if the caller is interested. */
if (thread_return != NULL)
- *thread_return = pd->result;
+ *thread_return = pd_result;
/* Free the TCB. */
__free_tcb (pd);
@@ -101,7 +102,7 @@ __pthread_timedjoin_ex (pthread_t threadid, void **thread_return,
else
pd->joinid = NULL;
- LIBC_PROBE (pthread_join_ret, 3, threadid, result, pd->result);
+ LIBC_PROBE (pthread_join_ret, 3, threadid, result, pd_result);
return result;
}
From bc6f839fb4066be83272c735e662850af2595777 Mon Sep 17 00:00:00 2001
From: Stefan Liebler <stli@linux.ibm.com>
Date: Wed, 13 Mar 2019 10:45:35 +0100
Subject: [PATCH] Fix output of LD_SHOW_AUXV=1.
diff --git a/elf/dl-sysdep.c b/elf/dl-sysdep.c
index 5f6c679a3f..5d19b100b2 100644
--- a/elf/dl-sysdep.c
+++ b/elf/dl-sysdep.c
@@ -328,14 +328,9 @@ _dl_show_auxv (void)
assert (AT_NULL == 0);
assert (AT_IGNORE == 1);
- if (av->a_type == AT_HWCAP || av->a_type == AT_HWCAP2
- || AT_L1I_CACHEGEOMETRY || AT_L1D_CACHEGEOMETRY
- || AT_L2_CACHEGEOMETRY || AT_L3_CACHEGEOMETRY)
- {
- /* These are handled in a special way per platform. */
- if (_dl_procinfo (av->a_type, av->a_un.a_val) == 0)
- continue;
- }
+ /* Some entries are handled in a special way per platform. */
+ if (_dl_procinfo (av->a_type, av->a_un.a_val) == 0)
+ continue;
if (idx < sizeof (auxvars) / sizeof (auxvars[0])
&& auxvars[idx].form != unknown)
diff --git a/sysdeps/powerpc/dl-procinfo.h b/sysdeps/powerpc/dl-procinfo.h
index f542f7318f..dfc3b33a72 100644
--- a/sysdeps/powerpc/dl-procinfo.h
+++ b/sysdeps/powerpc/dl-procinfo.h
@@ -225,7 +225,7 @@ _dl_procinfo (unsigned int type, unsigned long int word)
break;
}
default:
- /* This should not happen. */
+ /* Fallback to generic output mechanism. */
return -1;
}
_dl_printf ("\n");
diff --git a/sysdeps/sparc/dl-procinfo.h b/sysdeps/sparc/dl-procinfo.h
index 282b8c5117..64ee267fc7 100644
--- a/sysdeps/sparc/dl-procinfo.h
+++ b/sysdeps/sparc/dl-procinfo.h
@@ -31,8 +31,8 @@ _dl_procinfo (unsigned int type, unsigned long int word)
{
int i;
- /* Fallback to unknown output mechanism. */
- if (type == AT_HWCAP2)
+ /* Fallback to generic output mechanism. */
+ if (type != AT_HWCAP)
return -1;
_dl_printf ("AT_HWCAP: ");
diff --git a/sysdeps/unix/sysv/linux/arm/dl-procinfo.h b/sysdeps/unix/sysv/linux/arm/dl-procinfo.h
index 66c00297b7..05c62c8687 100644
--- a/sysdeps/unix/sysv/linux/arm/dl-procinfo.h
+++ b/sysdeps/unix/sysv/linux/arm/dl-procinfo.h
@@ -67,7 +67,7 @@ _dl_procinfo (unsigned int type, unsigned long int word)
break;
}
default:
- /* This should not happen. */
+ /* Fallback to generic output mechanism. */
return -1;
}
_dl_printf ("\n");
diff --git a/sysdeps/unix/sysv/linux/i386/dl-procinfo.h b/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
index 22b43431bc..0585cdaa9c 100644
--- a/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
+++ b/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
@@ -30,8 +30,8 @@ _dl_procinfo (unsigned int type, unsigned long int word)
in the kernel sources. */
int i;
- /* Fallback to unknown output mechanism. */
- if (type == AT_HWCAP2)
+ /* Fallback to generic output mechanism. */
+ if (type != AT_HWCAP)
return -1;
_dl_printf ("AT_HWCAP: ");
diff --git a/sysdeps/unix/sysv/linux/s390/dl-procinfo.h b/sysdeps/unix/sysv/linux/s390/dl-procinfo.h
index 19329a335b..d67fde368f 100644
--- a/sysdeps/unix/sysv/linux/s390/dl-procinfo.h
+++ b/sysdeps/unix/sysv/linux/s390/dl-procinfo.h
@@ -32,8 +32,8 @@ _dl_procinfo (unsigned int type, unsigned long int word)
in the kernel sources. */
int i;
- /* Fallback to unknown output mechanism. */
- if (type == AT_HWCAP2)
+ /* Fallback to generic output mechanism. */
+ if (type != AT_HWCAP)
return -1;
_dl_printf ("AT_HWCAP: ");
From e28ad442e73b00ae2047d89c8cc7f9b2a0de5436 Mon Sep 17 00:00:00 2001
From: TAMUKI Shoichi <tamuki@linet.gr.jp>
Date: Sat, 2 Mar 2019 21:00:28 +0900
Subject: [PATCH] ja_JP: Change the offset for Taisho gan-nen from 2 to 1 [BZ
#24162]
diff --git a/localedata/locales/ja_JP b/localedata/locales/ja_JP
index 1fd2fee44b..9bfbb2bb9b 100644
--- a/localedata/locales/ja_JP
+++ b/localedata/locales/ja_JP
@@ -14951,7 +14951,7 @@ era "+:2:1990//01//01:+*:<U5E73><U6210>:%EC%Ey<U5E74>";/
"+:2:1927//01//01:1989//01//07:<U662D><U548C>:%EC%Ey<U5E74>";/
"+:1:1926//12//25:1926//12//31:<U662D><U548C>:%EC<U5143><U5E74>";/
"+:2:1913//01//01:1926//12//24:<U5927><U6B63>:%EC%Ey<U5E74>";/
- "+:2:1912//07//30:1912//12//31:<U5927><U6B63>:%EC<U5143><U5E74>";/
+ "+:1:1912//07//30:1912//12//31:<U5927><U6B63>:%EC<U5143><U5E74>";/
"+:6:1873//01//01:1912//07//29:<U660E><U6CBB>:%EC%Ey<U5E74>";/
"+:1:0001//01//01:1872//12//31:<U897F><U66A6>:%EC%Ey<U5E74>";/
"+:1:-0001//12//31:-*:<U7D00><U5143><U524D>:%EC%Ey<U5E74>"
From 0941350c20a52447e53c5169354408e3db591f73 Mon Sep 17 00:00:00 2001
From: TAMUKI Shoichi <tamuki@linet.gr.jp>
Date: Tue, 2 Apr 2019 16:46:55 +0900
Subject: [PATCH] ja_JP locale: Add entry for the new Japanese era [BZ #22964]
diff --git a/localedata/locales/ja_JP b/localedata/locales/ja_JP
index 9bfbb2bb9b..c64aaaff55 100644
--- a/localedata/locales/ja_JP
+++ b/localedata/locales/ja_JP
@@ -14946,7 +14946,9 @@ am_pm "<U5348><U524D>";"<U5348><U5F8C>"
t_fmt_ampm "%p%I<U6642>%M<U5206>%S<U79D2>"
-era "+:2:1990//01//01:+*:<U5E73><U6210>:%EC%Ey<U5E74>";/
+era "+:2:2020//01//01:+*:<U4EE4><U548C>:%EC%Ey<U5E74>";/
+ "+:1:2019//05//01:2019//12//31:<U4EE4><U548C>:%EC<U5143><U5E74>";/
+ "+:2:1990//01//01:2019//04//30:<U5E73><U6210>:%EC%Ey<U5E74>";/
"+:1:1989//01//08:1989//12//31:<U5E73><U6210>:%EC<U5143><U5E74>";/
"+:2:1927//01//01:1989//01//07:<U662D><U548C>:%EC%Ey<U5E74>";/
"+:1:1926//12//25:1926//12//31:<U662D><U548C>:%EC<U5143><U5E74>";/
From 52b7cd6e9a701bb203023d56e84551943dc6a4c0 Mon Sep 17 00:00:00 2001
From: Adam Maris <amaris@redhat.com>
Date: Thu, 14 Mar 2019 16:51:16 -0400
Subject: [PATCH] malloc: Check for large bin list corruption when inserting
unsorted chunk
diff --git a/malloc/malloc.c b/malloc/malloc.c
index feaf7ee0bf..ce771375b6 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -3876,10 +3876,14 @@ _int_malloc (mstate av, size_t bytes)
{
victim->fd_nextsize = fwd;
victim->bk_nextsize = fwd->bk_nextsize;
+ if (__glibc_unlikely (fwd->bk_nextsize->fd_nextsize != fwd))
+ malloc_printerr ("malloc(): largebin double linked list corrupted (nextsize)");
fwd->bk_nextsize = victim;
victim->bk_nextsize->fd_nextsize = victim;
}
bck = fwd->bk;
+ if (bck->fd != fwd)
+ malloc_printerr ("malloc(): largebin double linked list corrupted (bk)");
}
}
else
From c6177be4b92d5d7df50a785652d1912db511423e Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Wed, 15 May 2019 17:09:05 +0200
Subject: [PATCH] Fix crash in _IO_wfile_sync (bug 20568)
diff --git a/libio/wfileops.c b/libio/wfileops.c
index 78f20486e5..bab2ba4892 100644
--- a/libio/wfileops.c
+++ b/libio/wfileops.c
@@ -508,11 +508,12 @@ _IO_wfile_sync (FILE *fp)
generate the wide characters up to the current reading
position. */
int nread;
-
+ size_t wnread = (fp->_wide_data->_IO_read_ptr
+ - fp->_wide_data->_IO_read_base);
fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state;
nread = (*cv->__codecvt_do_length) (cv, &fp->_wide_data->_IO_state,
fp->_IO_read_base,
- fp->_IO_read_end, delta);
+ fp->_IO_read_end, wnread);
fp->_IO_read_ptr = fp->_IO_read_base + nread;
delta = -(fp->_IO_read_end - fp->_IO_read_base - nread);
}
From e3f828b8bd6e21922da8be8dee35edef09382d8d Mon Sep 17 00:00:00 2001
From: Mark Wielaard <mark@klomp.org>
Date: Wed, 15 May 2019 17:14:01 +0200
Subject: [PATCH] dlfcn: Guard __dlerror_main_freeres with __libc_once_get
(once) [BZ#24476]
diff --git a/dlfcn/dlerror.c b/dlfcn/dlerror.c
index 27376582d0..ca42c126c1 100644
--- a/dlfcn/dlerror.c
+++ b/dlfcn/dlerror.c
@@ -72,9 +72,16 @@ __dlerror (void)
__libc_once (once, init);
/* Get error string. */
- result = (struct dl_action_result *) __libc_getspecific (key);
- if (result == NULL)
- result = &last_result;
+ if (static_buf != NULL)
+ result = static_buf;
+ else
+ {
+ /* init () has been run and we don't use the static buffer.
+ So we have a valid key. */
+ result = (struct dl_action_result *) __libc_getspecific (key);
+ if (result == NULL)
+ result = &last_result;
+ }
/* Test whether we already returned the string. */
if (result->returned != 0)
@@ -230,13 +237,19 @@ free_key_mem (void *mem)
void
__dlerror_main_freeres (void)
{
- void *mem;
/* Free the global memory if used. */
check_free (&last_result);
- /* Free the TSD memory if used. */
- mem = __libc_getspecific (key);
- if (mem != NULL)
- free_key_mem (mem);
+
+ if (__libc_once_get (once) && static_buf == NULL)
+ {
+ /* init () has been run and we don't use the static buffer.
+ So we have a valid key. */
+ void *mem;
+ /* Free the TSD memory if used. */
+ mem = __libc_getspecific (key);
+ if (mem != NULL)
+ free_key_mem (mem);
+ }
}
struct dlfcn_hook *_dlfcn_hook __attribute__((nocommon));
From 95d66fecaabbc92ab53027e808f0fc1929c9f21a Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Fri, 10 May 2019 16:38:21 +0100
Subject: [PATCH] Fix tcache count maximum (BZ #24531)
diff --git a/malloc/malloc.c b/malloc/malloc.c
index ce771375b6..0abd653be2 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -2919,6 +2919,8 @@ typedef struct tcache_perthread_struct
tcache_entry *entries[TCACHE_MAX_BINS];
} tcache_perthread_struct;
+#define MAX_TCACHE_COUNT 127 /* Maximum value of counts[] entries. */
+
static __thread bool tcache_shutting_down = false;
static __thread tcache_perthread_struct *tcache = NULL;
@@ -5124,8 +5126,11 @@ static inline int
__always_inline
do_set_tcache_count (size_t value)
{
- LIBC_PROBE (memory_tunable_tcache_count, 2, value, mp_.tcache_count);
- mp_.tcache_count = value;
+ if (value <= MAX_TCACHE_COUNT)
+ {
+ LIBC_PROBE (memory_tunable_tcache_count, 2, value, mp_.tcache_count);
+ mp_.tcache_count = value;
+ }
return 1;
}
From 34fb5f61d3c3f4b8fc616ea259fa19168b58ecd4 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Wed, 13 Feb 2019 01:20:51 +0000
Subject: [PATCH] libio: do not attempt to free wide buffers of legacy streams
[BZ #24228]
diff --git a/libio/genops.c b/libio/genops.c
index 2a0d9b81df..11a15549e8 100644
--- a/libio/genops.c
+++ b/libio/genops.c
@@ -789,9 +789,16 @@ _IO_unbuffer_all (void)
for (fp = (FILE *) _IO_list_all; fp; fp = fp->_chain)
{
+ int legacy = 0;
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+ if (__glibc_unlikely (_IO_vtable_offset (fp) != 0))
+ legacy = 1;
+#endif
+
if (! (fp->_flags & _IO_UNBUFFERED)
/* Iff stream is un-orientated, it wasn't used. */
- && fp->_mode != 0)
+ && (legacy || fp->_mode != 0))
{
#ifdef _IO_MTSAFE_IO
int cnt;
@@ -805,7 +812,7 @@ _IO_unbuffer_all (void)
__sched_yield ();
#endif
- if (! dealloc_buffers && !(fp->_flags & _IO_USER_BUF))
+ if (! legacy && ! dealloc_buffers && !(fp->_flags & _IO_USER_BUF))
{
fp->_flags |= _IO_USER_BUF;
@@ -816,7 +823,7 @@ _IO_unbuffer_all (void)
_IO_SETBUF (fp, NULL, 0);
- if (fp->_mode > 0)
+ if (! legacy && fp->_mode > 0)
_IO_wsetb (fp, NULL, NULL, 0);
#ifdef _IO_MTSAFE_IO
@@ -827,7 +834,8 @@ _IO_unbuffer_all (void)
/* Make sure that never again the wide char functions can be
used. */
- fp->_mode = -1;
+ if (! legacy)
+ fp->_mode = -1;
}
#ifdef _IO_MTSAFE_IO
