Revision c876ad7682155958d0c9c27afe9017925c230d64 authored by Eric W. Biederman on 22 December 2012, 04:27:12 UTC, committed by Eric W. Biederman on 26 December 2012, 00:10:05 UTC
Oleg pointed out that in a pid namespace the sequence.
- pid 1 becomes a zombie
- setns(thepidns), fork,...
- reaping pid 1.
- The injected processes exiting.

Can lead to processes attempting access their child reaper and
instead following a stale pointer.

That waitpid for init can return before all of the processes in
the pid namespace have exited is also unfortunate.

Avoid these problems by disabling the allocation of new pids in a pid
namespace when init dies, instead of when the last process in a pid
namespace is reaped.

Pointed-out-by:  Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
1 parent 8382fca
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basic
coccinelle
dtc
genksyms
kconfig
ksymoops
mod
package
rt-tester
selinux
tracing
.gitignore -rw-r--r-- 122 bytes
Kbuild.include -rw-r--r-- 10.1 KB
Lindent -rwxr-xr-x 460 bytes
Makefile -rw-r--r-- 1.4 KB
Makefile.asm-generic -rw-r--r-- 684 bytes
Makefile.build -rw-r--r-- 15.1 KB
Makefile.clean -rw-r--r-- 3.2 KB
Makefile.fwinst -rw-r--r-- 2.0 KB
Makefile.headersinst -rw-r--r-- 4.1 KB
Makefile.help -rw-r--r-- 68 bytes
Makefile.host -rw-r--r-- 6.5 KB
Makefile.lib -rw-r--r-- 13.0 KB
Makefile.modbuiltin -rw-r--r-- 1.8 KB
Makefile.modinst -rw-r--r-- 1.2 KB
Makefile.modpost -rw-r--r-- 5.1 KB
Makefile.modsign -rw-r--r-- 1003 bytes
asn1_compiler.c -rw-r--r-- 33.8 KB
bin2c.c -rw-r--r-- 702 bytes
bloat-o-meter -rwxr-xr-x 1.8 KB
bootgraph.pl -rw-r--r-- 5.6 KB
checkincludes.pl -rwxr-xr-x 1.8 KB
checkkconfigsymbols.sh -rwxr-xr-x 1.8 KB
checkpatch.pl -rwxr-xr-x 99.9 KB
checkstack.pl -rwxr-xr-x 5.2 KB
checksyscalls.sh -rwxr-xr-x 5.5 KB
checkversion.pl -rwxr-xr-x 1.9 KB
cleanfile -rwxr-xr-x 3.4 KB
cleanpatch -rwxr-xr-x 5.0 KB
coccicheck -rwxr-xr-x 3.3 KB
config -rwxr-xr-x 3.6 KB
conmakehash.c -rw-r--r-- 6.0 KB
decodecode -rwxr-xr-x 1.9 KB
depmod.sh -rwxr-xr-x 1.1 KB
diffconfig -rwxr-xr-x 3.6 KB
docproc.c -rw-r--r-- 14.1 KB
export_report.pl -rw-r--r-- 4.5 KB
extract-ikconfig -rwxr-xr-x 1.6 KB
extract-vmlinux -rwxr-xr-x 1.6 KB
gcc-goto.sh -rw-r--r-- 465 bytes
gcc-version.sh -rw-r--r-- 822 bytes
gcc-x86_32-has-stack-protector.sh -rw-r--r-- 184 bytes
gcc-x86_64-has-stack-protector.sh -rw-r--r-- 200 bytes
gen_initramfs_list.sh -rw-r--r-- 7.4 KB
get_maintainer.pl -rwxr-xr-x 54.0 KB
gfp-translate -rwxr-xr-x 1.7 KB
headerdep.pl -rwxr-xr-x 3.5 KB
headers.sh -rwxr-xr-x 530 bytes
headers_check.pl -rw-r--r-- 3.5 KB
headers_install.pl -rw-r--r-- 1.9 KB
kallsyms.c -rw-r--r-- 15.2 KB
kernel-doc -rwxr-xr-x 71.4 KB
link-vmlinux.sh -rw-r--r-- 5.4 KB
makelst -rwxr-xr-x 773 bytes
markup_oops.pl -rw-r--r-- 8.1 KB
mkcompile_h -rwxr-xr-x 2.5 KB
mkmakefile -rw-r--r-- 1.2 KB
mksysmap -rw-r--r-- 1.3 KB
mkuboot.sh -rwxr-xr-x 379 bytes
mkversion -rw-r--r-- 74 bytes
module-common.lds -rw-r--r-- 737 bytes
namespace.pl -rwxr-xr-x 13.0 KB
patch-kernel -rwxr-xr-x 9.9 KB
pnmtologo.c -rw-r--r-- 11.9 KB
profile2linkerlist.pl -rw-r--r-- 375 bytes
recordmcount.c -rw-r--r-- 11.9 KB
recordmcount.h -rw-r--r-- 16.3 KB
recordmcount.pl -rwxr-xr-x 17.5 KB
setlocalversion -rwxr-xr-x 3.9 KB
show_delta -rwxr-xr-x 3.0 KB
sign-file -rwxr-xr-x 12.2 KB
sortextable.c -rw-r--r-- 6.8 KB
sortextable.h -rw-r--r-- 4.9 KB
tags.sh -rwxr-xr-x 8.5 KB
unifdef.c -rw-r--r-- 34.8 KB
ver_linux -rwxr-xr-x 3.1 KB
xz_wrap.sh -rw-r--r-- 562 bytes

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