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Florian Weimer 29d794863c malloc: Run fork handler as late as possible [BZ #19431] 
Previously, a thread M invoking fork would acquire locks in this order:

  (M1) malloc arena locks (in the registered fork handler)
  (M2) libio list lock

A thread F invoking flush (NULL) would acquire locks in this order:

  (F1) libio list lock
  (F2) individual _IO_FILE locks

A thread G running getdelim would use this order:

  (G1) _IO_FILE lock
  (G2) malloc arena lock

After executing (M1), (F1), (G1), none of the threads can make progress.

This commit changes the fork lock order to:

  (M'1) libio list lock
  (M'2) malloc arena locks

It explicitly encodes the lock order in the implementations of fork,
and does not rely on the registration order, thus avoiding the deadlock.
2016-04-14 09:17:02 +02:00
..
examples Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
argp.texi manual/argp.texi (Specifying Argp Parsers): Fix typo. 2015-10-14 11:49:58 -04:00
arith.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
charset.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
check-safety.sh Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
conf.texi * manual/conf.texi: Document MTASC-safety properties. 2014-01-29 05:26:47 -02:00
contrib.texi glibc 2.21 pre-release update. 2015-02-05 23:14:38 -05:00
creature.texi Remove _BSD_SOURCE and _SVID_SOURCE. 2014-02-11 23:40:07 +00:00
crypt.texi * manual/crypt.texi: Document MTASC-safety properties. 2014-01-29 05:27:54 -02:00
ctype.texi * manual/ctype.texi: Document MTASC-safety properties. 2014-01-31 23:14:14 -02:00
debug.texi * manual/debug.texi: Document MTASC-safety properties. 2014-01-30 18:50:57 -02:00
dir .. 2005-11-21 15:45:19 +00:00
errno.texi manual: complete example in error message documentation 2015-03-06 00:59:49 -05:00
fdl-1.3.texi BZ#13738: Switch manual to FDL 1.3. 2012-02-24 12:58:10 -08:00
filesys.texi Deprecate readdir_r, readdir64_r [BZ #19056] 2016-02-20 12:56:55 +01:00
freemanuals.texi Update to canonical freemanuals.texi file. 2013-09-24 14:06:56 -07:00
getopt.texi * manual/getopt.texi: Document MTASC-safety properties. 2014-01-31 23:16:56 -02:00
header.texi Use Texinfo macros to refer to the GNU C Library within the manual. 2012-02-28 14:44:20 +00:00
install-plain.texi BZ #15941: Fix INSTALL file regeneration failure with makeinfo 5.x 2013-12-05 09:58:20 +05:30
install.texi Require Linux 3.2 except on x86 / x86_64, 3.2 headers everywhere. 2016-02-24 17:15:12 +00:00
intro.texi manual: Sort overview listing by manual order. 2014-04-17 19:41:09 -04:00
io.texi Clean up glibc manual references to "GNU system" (bug 6911). 2012-03-08 01:27:38 +00:00
ipc.texi manual/ipc.texi: Fix AC-safety notes. 2014-04-08 17:12:15 -04:00
job.texi ctermid: return string literal, document MT-Safety pitfall 2014-11-21 02:16:02 -02:00
lang.texi Split large string section; add truncation advice 2015-12-10 08:29:30 -08:00
lgpl-2.1.texi Use canonical FSF .texi files for LGPL and FDL texts. 2011-06-06 16:16:55 -07:00
libc-texinfo.sh Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
libc.texinfo Fix doc quoting problems with Texinfo 5 2016-01-10 00:20:51 -08:00
libcbook.texi
libdl.texi * manual/libdl.texi: New. 2014-01-31 23:23:59 -02:00
libm-err-tab.pl Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
llio.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
locale.texi Split large string section; add truncation advice 2015-12-10 08:29:30 -08:00
macros.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
maint.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
Makefile Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
math.texi Allow spurious underflow / inexact for ldbl-128ibm. 2016-03-10 23:48:46 +00:00
memory.texi malloc: Run fork handler as late as possible [BZ #19431] 2016-04-14 09:17:02 +02:00
message.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
nss.texi Document best practice for disconnected NSS modules. 2015-12-10 00:48:15 -05:00
nsswitch.texi
pattern.texi Avoid SIGFPE in wordexp [BZ #18100] 2015-03-23 16:12:38 +01:00
pipe.texi * manual/pipe.texi: Document MTASC-safety properties. 2014-01-31 23:37:28 -02:00
platform.texi PowerPC: Extend Program Priority Register support 2015-08-19 17:43:26 -03:00
probes.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
process.texi Remove union wait [BZ #19613] 2016-04-14 08:54:57 +02:00
resource.texi Fix typo in manual. 2014-06-05 01:13:04 +02:00
search.texi manual: Correct guarantee about pointers compared by qsort() 2014-12-21 14:11:32 +01:00
setjmp.texi manual/setjmp.texi: Clarify setcontext and signal handlers text 2014-04-17 11:40:36 +01:00
signal.texi Fix crossreference to nonexistent node BSD Handler 2014-11-18 11:19:20 +01:00
socket.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
startup.texi Remove _BSD_SOURCE and _SVID_SOURCE. 2014-02-11 23:40:07 +00:00
stdio-fp.c
stdio.texi Split large string section; add truncation advice 2015-12-10 08:29:30 -08:00
string.texi Split large string section; add truncation advice 2015-12-10 08:29:30 -08:00
summary.awk Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sysinfo.texi Make obsolete syscall wrappers into compat symbols (bug 18472). 2015-12-14 22:52:15 +00:00
syslog.texi * manual/syslog.texi: Document MTASC-safety properties. 2014-02-01 01:22:09 -02:00
terminal.texi * manual/terminal.texi: Document MTASC-safety properties. 2014-02-01 03:53:15 -02:00
texinfo.tex Update miscellaneous files from upstream sources. 2016-01-05 18:04:06 +00:00
texis.awk
threads.texi Remove CPU set size checking from affinity functions [BZ #19143] 2015-11-24 17:21:01 +01:00
time.texi * manual/time.texi (TZ Variable): glibc no longer comes with tzdata. 2015-02-16 15:32:34 -08:00
tsort.awk Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
users.texi manual: cuserid is mtasurace if not passed a string 2014-11-21 02:15:09 -02:00
xtract-typefun.awk Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00