From: "Serge E. Hallyn" <serge@hallyn.com>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>,
Serge Hallyn <serge.hallyn@ubuntu.com>,
Djalal Harouni <tixxdz@gmail.com>, Chris Mason <clm@fb.com>,
tytso@mit.edu, Serge Hallyn <serge.hallyn@canonical.com>,
Josh Triplett <josh@joshtriplett.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Andy Lutomirski <luto@kernel.org>,
Seth Forshee <seth.forshee@canonical.com>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-security-module@vger.kernel.org,
Dongsu Park <dongsu@endocode.com>,
David Herrmann <dh.herrmann@googlemail.com>,
Miklos Szeredi <mszeredi@redhat.com>,
Alban Crequy <alban.crequy@gmail.com>,
Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: [RFC 1/1] shiftfs: uid/gid shifting bind mount
Date: Wed, 18 May 2016 21:28:58 -0500 [thread overview]
Message-ID: <20160519022858.GA12428@mail.hallyn.com> (raw)
In-Reply-To: <1463518767.13655.2.camel@HansenPartnership.com>
Hey James,
yeah that's a lot better. I do still get some syslog messages,
but i was trivially able to bind a shiftfs into a container and
use it the way I'd want.
[ 209.452274] ------------[ cut here ]------------
[ 209.452296] WARNING: CPU: 0 PID: 3072 at fs/ext4/inode.c:3977 ext4_truncate+0x3f5/0x5b0
[ 209.452299] Modules linked in: binfmt_misc veth ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6_tables xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables ppdev kvm_intel kvm irqbypass nls_utf8 isofs joydev input_leds serio_raw i2c_piix4 pvpanic parport_pc 8250_fintek mac_hid parport ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops
[ 209.452388] psmouse drm pata_acpi floppy
[ 209.452401] CPU: 0 PID: 3072 Comm: bash Not tainted 4.6.0-rc5+ #11
[ 209.452404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 209.452407] 0000000000000286 00000000ccc8425d ffff88007a1cfa98 ffffffff8145dae3
[ 209.452412] 0000000000000000 0000000000000000 ffff88007a1cfad8 ffffffff8108c25b
[ 209.452416] 00000f897a1cfaf8 ffff880052efe340 ffff88007a1cfbb8 ffff880052efe560
[ 209.452421] Call Trace:
[ 209.452431] [<ffffffff8145dae3>] dump_stack+0x85/0xc2
[ 209.452437] [<ffffffff8108c25b>] __warn+0xcb/0xf0
[ 209.452440] [<ffffffff8108c38d>] warn_slowpath_null+0x1d/0x20
[ 209.452444] [<ffffffff81306d45>] ext4_truncate+0x3f5/0x5b0
[ 209.452447] [<ffffffff81309447>] ext4_setattr+0x627/0xa40
[ 209.452457] [<ffffffff813b6483>] ? security_prepare_creds+0x43/0x60
[ 209.452468] [<ffffffff810b63d2>] ? creds_are_invalid.part.1+0x12/0x40
[ 209.452478] [<ffffffff81396491>] shiftfs_setattr+0x181/0x202
[ 209.452492] [<ffffffff812831f5>] notify_change+0x235/0x360
[ 209.452500] [<ffffffff8125f057>] do_truncate+0x77/0xc0
[ 209.452505] [<ffffffff81271959>] path_openat+0x269/0x1350
[ 209.452509] [<ffffffff81273f01>] do_filp_open+0x91/0x100
[ 209.452517] [<ffffffff819036d7>] ? _raw_spin_unlock+0x27/0x40
[ 209.452522] [<ffffffff81284799>] ? __alloc_fd+0xf9/0x210
[ 209.452526] [<ffffffff81260654>] do_sys_open+0x124/0x210
[ 209.452529] [<ffffffff8126075e>] SyS_open+0x1e/0x20
[ 209.452534] [<ffffffff81003f89>] do_syscall_64+0x69/0x160
[ 209.452537] [<ffffffff81904103>] entry_SYSCALL64_slow_path+0x25/0x25
[ 209.452541] ---[ end trace b995e24e590f8b85 ]---
[ 209.452790] ------------[ cut here ]------------
[ 209.452800] WARNING: CPU: 0 PID: 3072 at fs/ext4/namei.c:2778 ext4_orphan_add+0x11a/0x290
[ 209.452803] Modules linked in: binfmt_misc veth ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6_tables xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables ppdev kvm_intel kvm irqbypass nls_utf8 isofs joydev input_leds serio_raw i2c_piix4 pvpanic parport_pc 8250_fintek mac_hid parport ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops
[ 209.452896] psmouse drm pata_acpi floppy
[ 209.452903] CPU: 0 PID: 3072 Comm: bash Tainted: G W 4.6.0-rc5+ #11
[ 209.452905] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 209.452907] 0000000000000286 00000000ccc8425d ffff88007a1cfa30 ffffffff8145dae3
[ 209.452912] 0000000000000000 0000000000000000 ffff88007a1cfa70 ffffffff8108c25b
[ 209.452917] 00000ada00000008 ffff880052efe340 ffff88007c3ba0c0 ffff880036806000
[ 209.452921] Call Trace:
[ 209.452925] [<ffffffff8145dae3>] dump_stack+0x85/0xc2
[ 209.452929] [<ffffffff8108c25b>] __warn+0xcb/0xf0
[ 209.452933] [<ffffffff8108c38d>] warn_slowpath_null+0x1d/0x20
[ 209.452936] [<ffffffff813126ca>] ext4_orphan_add+0x11a/0x290
[ 209.452940] [<ffffffff81306a9e>] ? ext4_truncate+0x14e/0x5b0
[ 209.452948] [<ffffffff81338b98>] ? __ext4_journal_start_sb+0x88/0x1f0
[ 209.452953] [<ffffffff81306ad1>] ext4_truncate+0x181/0x5b0
[ 209.452956] [<ffffffff81309447>] ext4_setattr+0x627/0xa40
[ 209.452960] [<ffffffff813b6483>] ? security_prepare_creds+0x43/0x60
[ 209.452964] [<ffffffff810b63d2>] ? creds_are_invalid.part.1+0x12/0x40
[ 209.452967] [<ffffffff81396491>] shiftfs_setattr+0x181/0x202
[ 209.452971] [<ffffffff812831f5>] notify_change+0x235/0x360
[ 209.452975] [<ffffffff8125f057>] do_truncate+0x77/0xc0
[ 209.452978] [<ffffffff81271959>] path_openat+0x269/0x1350
[ 209.452982] [<ffffffff81273f01>] do_filp_open+0x91/0x100
[ 209.452986] [<ffffffff819036d7>] ? _raw_spin_unlock+0x27/0x40
[ 209.452989] [<ffffffff81284799>] ? __alloc_fd+0xf9/0x210
[ 209.452993] [<ffffffff81260654>] do_sys_open+0x124/0x210
[ 209.452997] [<ffffffff8126075e>] SyS_open+0x1e/0x20
[ 209.453001] [<ffffffff81003f89>] do_syscall_64+0x69/0x160
[ 209.453004] [<ffffffff81904103>] entry_SYSCALL64_slow_path+0x25/0x25
[ 209.453007] ---[ end trace b995e24e590f8b86 ]---
[ 209.453541] ------------[ cut here ]------------
[ 209.453548] WARNING: CPU: 0 PID: 3072 at fs/ext4/namei.c:2860 ext4_orphan_del+0x18c/0x2a0
[ 209.453550] Modules linked in: binfmt_misc veth ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6_tables xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables ppdev kvm_intel kvm irqbypass nls_utf8 isofs joydev input_leds serio_raw i2c_piix4 pvpanic parport_pc 8250_fintek mac_hid parport ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops
[ 209.453625] psmouse drm pata_acpi floppy
[ 209.453632] CPU: 0 PID: 3072 Comm: bash Tainted: G W 4.6.0-rc5+ #11
[ 209.453635] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[ 209.453637] 0000000000000286 00000000ccc8425d ffff88007a1cfa18 ffffffff8145dae3
[ 209.453641] 0000000000000000 0000000000000000 ffff88007a1cfa58 ffffffff8108c25b
[ 209.453646] 00000b2c8103fca9 ffff880052efe340 ffff88007c3ba0c0 ffff88007c3ba0c0
[ 209.453650] Call Trace:
[ 209.453655] [<ffffffff8145dae3>] dump_stack+0x85/0xc2
[ 209.453658] [<ffffffff8108c25b>] __warn+0xcb/0xf0
[ 209.453662] [<ffffffff8108c38d>] warn_slowpath_null+0x1d/0x20
[ 209.453665] [<ffffffff81313d0c>] ext4_orphan_del+0x18c/0x2a0
[ 209.453668] [<ffffffff81903cf7>] ? _raw_write_unlock+0x27/0x40
[ 209.453673] [<ffffffff81306d72>] ext4_truncate+0x422/0x5b0
[ 209.453692] [<ffffffff81309447>] ext4_setattr+0x627/0xa40
[ 209.453697] [<ffffffff813b6483>] ? security_prepare_creds+0x43/0x60
[ 209.453701] [<ffffffff810b63d2>] ? creds_are_invalid.part.1+0x12/0x40
[ 209.453705] [<ffffffff81396491>] shiftfs_setattr+0x181/0x202
[ 209.453709] [<ffffffff812831f5>] notify_change+0x235/0x360
[ 209.453712] [<ffffffff8125f057>] do_truncate+0x77/0xc0
[ 209.453716] [<ffffffff81271959>] path_openat+0x269/0x1350
[ 209.453720] [<ffffffff81273f01>] do_filp_open+0x91/0x100
[ 209.453724] [<ffffffff819036d7>] ? _raw_spin_unlock+0x27/0x40
[ 209.453727] [<ffffffff81284799>] ? __alloc_fd+0xf9/0x210
[ 209.453731] [<ffffffff81260654>] do_sys_open+0x124/0x210
[ 209.453734] [<ffffffff8126075e>] SyS_open+0x1e/0x20
[ 209.453738] [<ffffffff81003f89>] do_syscall_64+0x69/0x160
[ 209.453741] [<ffffffff81904103>] entry_SYSCALL64_slow_path+0x25/0x25
[ 209.453745] ---[ end trace b995e24e590f8b87 ]---
next prev parent reply other threads:[~2016-05-19 2:29 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-12 19:06 [RFC 0/1] shiftfs: uid/gid shifting filesystem James Bottomley
2016-05-12 19:07 ` [RFC 1/1] shiftfs: uid/gid shifting bind mount James Bottomley
2016-05-16 19:41 ` Serge Hallyn
2016-05-17 2:28 ` James Bottomley
2016-05-17 3:47 ` Serge E. Hallyn
2016-05-17 10:23 ` James Bottomley
2016-05-17 20:59 ` James Bottomley
2016-05-19 2:28 ` Serge E. Hallyn [this message]
2016-05-19 10:53 ` James Bottomley
2017-02-04 19:18 [RFC 0/1] shiftfs: uid/gid shifting filesystem (s_user_ns version) James Bottomley
2017-02-04 19:19 ` [RFC 1/1] shiftfs: uid/gid shifting bind mount James Bottomley
2017-02-05 7:51 ` Amir Goldstein
2017-02-06 1:18 ` James Bottomley
2017-02-06 6:59 ` Amir Goldstein
2017-02-06 14:41 ` James Bottomley
2017-02-14 23:03 ` Vivek Goyal
2017-02-14 23:45 ` James Bottomley
2017-02-15 14:17 ` Vivek Goyal
2017-02-16 15:51 ` James Bottomley
2017-02-16 16:42 ` Vivek Goyal
2017-02-16 16:58 ` James Bottomley
2017-02-17 1:57 ` Eric W. Biederman
2017-02-17 8:39 ` Djalal Harouni
2017-02-17 17:19 ` James Bottomley
2017-02-20 4:24 ` Eric W. Biederman
2017-02-22 12:01 ` James Bottomley
2017-02-06 3:25 ` J. R. Okajima
2017-02-06 6:38 ` Amir Goldstein
2017-02-06 16:29 ` James Bottomley
2017-02-06 6:46 ` James Bottomley
2017-02-06 14:50 ` Theodore Ts'o
2017-02-06 15:18 ` James Bottomley
2017-02-06 15:38 ` lkml
2017-02-06 17:32 ` James Bottomley
2017-02-06 21:52 ` J. Bruce Fields
2017-02-07 0:10 ` James Bottomley
2017-02-07 1:35 ` J. Bruce Fields
2017-02-07 19:01 ` James Bottomley
2017-02-07 19:47 ` Christoph Hellwig
2017-02-06 16:24 ` J. R. Okajima
2017-02-21 0:48 ` James Bottomley
2017-02-21 2:57 ` J. R. Okajima
2017-02-21 4:07 ` James Bottomley
2017-02-21 4:34 ` J. R. Okajima
2017-02-07 9:19 ` Christoph Hellwig
2017-02-07 9:39 ` Djalal Harouni
2017-02-07 9:53 ` Christoph Hellwig
2017-02-07 16:37 ` James Bottomley
2017-02-07 17:59 ` Amir Goldstein
2017-02-07 18:10 ` Christoph Hellwig
2017-02-07 19:02 ` James Bottomley
2017-02-07 19:49 ` Christoph Hellwig
2017-02-07 20:05 ` James Bottomley
2017-02-07 21:01 ` Amir Goldstein
2017-02-07 22:25 ` Christoph Hellwig
2017-02-07 23:42 ` James Bottomley
2017-02-08 6:44 ` Amir Goldstein
2017-02-08 11:45 ` Konstantin Khlebnikov
2017-02-08 14:57 ` James Bottomley
2017-02-08 15:15 ` James Bottomley
2017-02-08 1:54 ` Josh Triplett
2017-02-08 15:22 ` James Bottomley
2017-02-09 10:36 ` Josh Triplett
2017-02-09 15:34 ` James Bottomley
2017-02-13 10:15 ` Eric W. Biederman
2017-02-15 9:33 ` Djalal Harouni
2017-02-15 9:37 ` Eric W. Biederman
2017-02-15 10:04 ` Djalal Harouni
2017-02-07 18:20 ` James Bottomley
2017-02-07 19:48 ` Djalal Harouni
2017-02-15 20:34 ` Vivek Goyal
2017-02-16 15:56 ` James Bottomley
2017-02-17 2:55 ` Al Viro
2017-02-17 17:34 ` James Bottomley
2017-02-17 20:35 ` Vivek Goyal
2017-02-19 3:24 ` James Bottomley
2017-02-20 19:26 ` Vivek Goyal
2017-02-21 0:38 ` James Bottomley
2017-02-17 2:29 ` Al Viro
2017-02-17 17:24 ` James Bottomley
2017-02-17 17:51 ` Al Viro
2017-02-17 20:27 ` Vivek Goyal
2017-02-17 20:50 ` James Bottomley
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