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Date: Thu, 2 Nov 2017 13:41:52 +0800 From: 曹树烽 <caosf.fnst@...fujitsu.com> To: <linux-kernel@...r.kernel.org> CC: <containers@...ts.linux-foundation.org>, <ebiederm@...ssion.com>, <mguzik@...hat.com>, <kamezawa.hiroyu@...fujitsu.com>, <stgraber@...ntu.com>, <avagin@...il.com>, <mashimiao.fnst@...fujitsu.com> Subject: Re: [PATCH 0/3] Make core_pattern support namespace ping 在 2017年08月02日 14:37, Cao Shufeng 写道: > This patchset includes following function points: > 1: Let usermodehelper function possible to set pid namespace > done by: [PATCH_v4.1_1/3] Make call_usermodehelper_exec possible > to set namespaces > 2: Let pipe_type core_pattern write dump into container's rootfs > done by: [PATCH_v4.1_2/3] Limit dump_pipe program's permission to > init for container > 3: Make separate core_pattern setting for each container > done by: [PATCH_v4.1_3/3] Make core_pattern support namespace > 4: Compatibility with current system > also included in: [PATCH_v4.1_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@...neldev dumptest]# ./test_host > Set file core_pattern: OK > ./test_host: line 41: 2366 Segmentation fault (core dumped) "$SCRI= > PT_BASE_DIR"/make_dump > Checking dumpfile: OK > Set file core_pattern: OK > ./test_host: line 41: 2369 Segmentation fault (core dumped) "$SCRI= > PT_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 000= > 07ffc4af025f0 error 6 in make_dump[400000+a6000] > # > 2: Pass other test(which is not easy to do in script) by hand. > > Changelog v3.1-v4: > 1. remove extra fork pointed out by: > Andrei Vagin <avagin@...il.com> > 2: Rebase on top of v4.9-rc8. > 3: Rebase on top of v4.12. > > Changelog v3-v3.1: > 1. Switch "pwd" of pipe program to container's root fs. > 2. Rebase on top of v4.9-rc1. > > Changelog v2->v3: > 1: Fix problem of setting pid namespace, pointed out by: > Andrei Vagin <avagin@...il.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 <ebiederm@...ssion.com> > Suggested-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> > Signed-off-by: Cao Shufeng <caosf.fnst@...fujitsu.com> > > Cao Shufeng (3): > Make call_usermodehelper_exec possible to set namespaces > Limit dump_pipe program's permission to init for container > Make core_pattern support namespace > > fs/coredump.c | 150 +++++++++++++++++++++++++++++++++++++++--- > include/linux/binfmts.h | 2 + > include/linux/kmod.h | 5 ++ > include/linux/pid_namespace.h | 3 + > init/do_mounts_initrd.c | 3 +- > kernel/kmod.c | 56 +++++++++++++--- > 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, 253 insertions(+), 27 deletions(-) >
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