Ping > -----Original Message----- > From: Zhao Lei [mailto:zhao...@cn.fujitsu.com] > Sent: Monday, August 29, 2016 8:07 PM > To: linux-kernel@vger.kernel.org > Cc: contain...@lists.linux-foundation.org; Eric W. Biederman > <ebied...@xmission.com>; Mateusz Guzik <mgu...@redhat.com>; > Kamezawa Hiroyuki <kamezawa.hir...@jp.fujitsu.com>; Stéphane Graber > <stgra...@ubuntu.com>; Andrei Vagin <ava...@gmail.com>; Zhao Lei > <zhao...@cn.fujitsu.com> > Subject: [PATCH v3 0/3] Make core_pattern support namespace > > This patchset includes following function points: > 1: Let usermodehelper function possible to set pid namespace > done by: [PATCH v3 1/3] Make call_usermodehelper_exec possible > to set pid namespace. > 2: Let pipe_type core_pattern write dump into container's rootfs > done by: [PATCH v3 2/3] Limit dump_pipe program's permission to > init for container. > 2: Make separate core_pattern setting for each container > done by: [PATCH v3 3/3] Make core_pattern support namespace > 3: Compatibility with current system > also included in: [PATCH v3 3/3] Make core_pattern support namespace > If container hadn't change core_pattern setting, it will keep > same setting with host. > > Test: > 1: Pass a test script for each function of this patchset > ## TEST IN HOST ## > [root@kerneldev dumptest]# ./test_host > Set file core_pattern: OK > ./test_host: line 41: 2366 Segmentation fault (core dumped) > "$SCRIPT_BASE_DIR"/make_dump > Checking dumpfile: OK > Set file core_pattern: OK > ./test_host: line 41: 2369 Segmentation fault (core dumped) > "$SCRIPT_BASE_DIR"/make_dump > Checking dump_pipe triggered: OK > Checking rootfs: OK > Checking dumpfile: OK > Checking namespace: OK > Checking process list: OK > Checking capabilities: OK > > ## TEST IN GUEST ## > # ./test > Segmentation fault (core dumped) > Checking dump_pipe triggered: OK > Checking rootfs: OK > Checking dumpfile: OK > Checking namespace: OK > Checking process list: OK > Checking cg pids: OK > Checking capabilities: OK > [ 64.940734] make_dump[2432]: segfault at 0 ip 000000000040049d sp > 00007ffc4af025f0 error 6 in make_dump[400000+a6000] > # > 2: Pass other test(which is not easy to do in script) by hand. > > Changelog v2->v3: > 1: Fix problem of setting pid namespace, pointed out by: > Andrei Vagin <ava...@gmail.com> > > Changelog v1(RFC)->v2: > 1: Add [PATCH 2/2] which was todo in [RFC v1]. > 2: Pass a test script for each function. > 3: Rebase on top of v4.7. > > Suggested-by: Eric W. Biederman <ebied...@xmission.com> > Suggested-by: KOSAKI Motohiro <kosaki.motoh...@jp.fujitsu.com> > Signed-off-by: Zhao Lei <zhao...@cn.fujitsu.com> > > Zhao Lei (3): > Make call_usermodehelper_exec possible to set pid namespace > Limit dump_pipe program's permission to init for container > Make core_pattern support namespace > > fs/coredump.c | 126 > ++++++++++++++++++++++++++++++++++++--- > include/linux/binfmts.h | 1 + > include/linux/kmod.h | 2 + > include/linux/pid_namespace.h | 3 + > init/do_mounts_initrd.c | 3 +- > kernel/kmod.c | 133 > +++++++++++++++++++++++++++++++++++++----- > kernel/pid.c | 2 + > kernel/pid_namespace.c | 2 + > kernel/sysctl.c | 50 ++++++++++++++-- > lib/kobject_uevent.c | 3 +- > security/keys/request_key.c | 4 +- > 11 files changed, 296 insertions(+), 33 deletions(-) > > -- > 1.8.5.1
