From: Guenter Roeck <linux@roeck-us.net>
To: David Howells <dhowells@redhat.com>
Cc: viro@zeniv.linux.org.uk, torvalds@linux-foundation.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH 14/33] vfs: Implement a filesystem superblock creation/configuration context [ver #11]
Date: Tue, 11 Sep 2018 15:07:43 -0700 [thread overview]
Message-ID: <20180911220743.GA13208@roeck-us.net> (raw)
In-Reply-To: <27113.1536702746@warthog.procyon.org.uk>
On Tue, Sep 11, 2018 at 10:52:26PM +0100, David Howells wrote:
> > [ 5.057003] RIP: 0010:reconfigure_super+0x47/0x210
>
> Can you tell me what file and line this is?
>
> Also, do you know which filesystem was involved?
>
> > I don't find a more recent version of this patch in patchwork on kernel.org,
> > so I am replying to this one. My apologies if there are more recent versions.
>
> I've just updated my tree with some fixes. Can you try:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/log/
>
> branch "fsinfo"?
>
Unfortunately, that does not work either.
With v4.19-rc3-40-g09f0a401de37:
[ 8.505130] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030
[ 8.506237] PGD 800000001d81e067 P4D 800000001d81e067 PUD 1dfb1067 PMD 0
[ 8.506669] Oops: 0000 [#1] SMP PTI
[ 8.506915] CPU: 0 PID: 1180 Comm: umount Not tainted 4.19.0-rc3+ #1
[ 8.507052] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.11.2-0-gf9626ccb91-prebuilt.qemu-project.org 04/01/2014
[ 8.507672] RIP: 0010:reconfigure_super+0x47/0x210
[ 8.507877] Code: d4 01 00 00 44 8b a3 30 02 00 00 45 85 e4 0f 85 9d 01 00 00 a8 01 48 89 fd 75 4f 48 89 df 45 31 ed e8 ad 4f 01 00 48 8b 45 00 <48> 4
[ 8.508222] RSP: 0018:ffffb3794015bdd0 EFLAGS: 00000246
[ 8.508345] RAX: 0000000000000000 RBX: ffff9d855df27800 RCX: ffff9d855df278b8
[ 8.508479] RDX: ffff9d855df27848 RSI: 0000000000000000 RDI: ffffffff8d54a9a8
[ 8.508617] RBP: ffffb3794015be00 R08: 00000000000000d8 R09: 0000000000000000
[ 8.508752] R10: ffffb3794011fce8 R11: 0000000000000001 R12: 0000000000000000
[ 8.508885] R13: 0000000000000001 R14: ffff9d855effc920 R15: 0000000000000000
[ 8.509056] FS: 00007f6712967500(0000) GS:ffff9d855f200000(0000) knlGS:0000000000000000
[ 8.509217] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.509332] CR2: 0000000000000030 CR3: 000000001dfe0000 CR4: 00000000000006f0
[ 8.509516] Call Trace:
[ 8.510121] do_umount_root+0x7b/0xb0
[ 8.510244] ksys_umount+0x250/0x3e0
[ 8.510535] ? vfs_write+0x13f/0x190
[ 8.510629] __x64_sys_umount+0xd/0x10
[ 8.510722] do_syscall_64+0x39/0xe0
[ 8.510810] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Guenter
next prev parent reply other threads:[~2018-09-12 3:09 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-01 15:23 [PATCH 00/33] VFS: Introduce filesystem context [ver #11] David Howells
2018-08-01 15:24 ` [PATCH 01/33] vfs: syscall: Add open_tree(2) to reference or clone a mount " David Howells
2018-08-02 17:31 ` Alan Jenkins
2018-08-02 21:29 ` Al Viro
2018-08-02 21:51 ` David Howells
2018-08-02 23:46 ` Alan Jenkins
2018-08-01 15:24 ` [PATCH 02/33] vfs: syscall: Add move_mount(2) to move mounts around " David Howells
2018-08-01 15:24 ` [PATCH 03/33] teach move_mount(2) to work with OPEN_TREE_CLONE " David Howells
2018-10-12 14:25 ` Alan Jenkins
2018-08-01 15:24 ` [PATCH 04/33] vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled " David Howells
2018-08-01 15:24 ` [PATCH 05/33] vfs: Introduce the basic header for the new mount API's filesystem context " David Howells
2018-08-01 15:24 ` [PATCH 06/33] vfs: Introduce logging functions " David Howells
2018-08-01 15:24 ` [PATCH 07/33] vfs: Add configuration parser helpers " David Howells
2018-08-01 15:24 ` [PATCH 08/33] vfs: Add LSM hooks for the new mount API " David Howells
2018-08-01 20:50 ` James Morris
2018-08-01 22:53 ` David Howells
2018-08-01 15:25 ` [PATCH 09/33] selinux: Implement the new mount API LSM hooks " David Howells
2018-08-01 15:25 ` [PATCH 10/33] smack: Implement filesystem context security " David Howells
2018-08-01 15:25 ` [PATCH 11/33] apparmor: Implement security hooks for the new mount API " David Howells
2018-08-01 15:25 ` [PATCH 12/33] tomoyo: " David Howells
2018-08-01 15:25 ` [PATCH 13/33] vfs: Separate changing mount flags full remount " David Howells
2018-08-01 15:25 ` [PATCH 14/33] vfs: Implement a filesystem superblock creation/configuration context " David Howells
2018-09-11 17:46 ` Guenter Roeck
2018-09-11 21:52 ` David Howells
2018-09-11 22:07 ` Guenter Roeck [this message]
2018-09-11 23:17 ` David Howells
2018-09-11 23:54 ` Guenter Roeck
2018-09-18 9:07 ` Sergey Senozhatsky
2018-09-18 9:40 ` Sergey Senozhatsky
2018-09-18 14:06 ` Guenter Roeck
2018-09-19 1:12 ` Sergey Senozhatsky
2018-09-19 1:26 ` Sergey Senozhatsky
2018-09-18 15:34 ` David Howells
2018-09-18 16:39 ` David Howells
2018-09-19 1:15 ` Sergey Senozhatsky
2018-09-18 17:43 ` David Howells
2018-09-18 9:54 ` Sergey Senozhatsky
2018-09-18 15:28 ` David Howells
2018-08-01 15:25 ` [PATCH 15/33] vfs: Remove unused code after filesystem context changes " David Howells
2018-08-01 15:25 ` [PATCH 16/33] procfs: Move proc_fill_super() to fs/proc/root.c " David Howells
2018-08-01 15:26 ` [PATCH 17/33] proc: Add fs_context support to procfs " David Howells
2018-08-01 15:26 ` [PATCH 18/33] ipc: Convert mqueue fs to fs_context " David Howells
2018-08-01 15:26 ` [PATCH 19/33] cpuset: Use " David Howells
2018-08-01 15:26 ` [PATCH 20/33] kernfs, sysfs, cgroup, intel_rdt: Support " David Howells
2018-08-01 15:26 ` [PATCH 21/33] hugetlbfs: Convert to " David Howells
2018-08-01 15:26 ` [PATCH 22/33] vfs: Remove kern_mount_data() " David Howells
2018-08-01 15:26 ` [PATCH 23/33] vfs: Provide documentation for new mount API " David Howells
2018-08-01 15:26 ` [PATCH 24/33] Make anon_inodes unconditional " David Howells
2018-08-01 15:26 ` [PATCH 25/33] vfs: syscall: Add fsopen() to prepare for superblock creation " David Howells
2018-08-01 15:27 ` [PATCH 26/33] vfs: Implement logging through fs_context " David Howells
2018-08-01 15:27 ` [PATCH 27/33] vfs: Add some logging to the core users of the fs_context log " David Howells
2018-08-01 15:27 ` [PATCH 28/33] vfs: syscall: Add fsconfig() for configuring and managing a context " David Howells
2018-08-06 17:28 ` Eric W. Biederman
2018-08-09 14:14 ` David Howells
2018-08-09 14:24 ` David Howells
2018-08-09 14:35 ` Miklos Szeredi
2018-08-09 15:32 ` Eric W. Biederman
2018-08-09 16:33 ` David Howells
2018-08-11 20:20 ` David Howells
2018-08-11 23:26 ` Andy Lutomirski
2018-08-01 15:27 ` [PATCH 29/33] vfs: syscall: Add fsmount() to create a mount for a superblock " David Howells
2018-08-01 15:27 ` [PATCH 30/33] vfs: syscall: Add fspick() to select a superblock for reconfiguration " David Howells
2018-08-24 14:51 ` Miklos Szeredi
2018-08-24 14:54 ` Andy Lutomirski
2018-08-01 15:27 ` [PATCH 31/33] afs: Add fs_context support " David Howells
2018-08-01 15:27 ` [PATCH 32/33] afs: Use fs_context to pass parameters over automount " David Howells
2018-08-01 15:27 ` [PATCH 33/33] vfs: Add a sample program for the new mount API " David Howells
2018-08-10 14:05 ` BUG: Mount ignores mount options Eric W. Biederman
2018-08-10 14:36 ` Andy Lutomirski
2018-08-10 15:17 ` Eric W. Biederman
2018-08-10 15:24 ` Al Viro
2018-08-10 15:11 ` Tetsuo Handa
2018-08-10 15:13 ` David Howells
2018-08-10 15:16 ` Al Viro
2018-08-11 1:05 ` Eric W. Biederman
2018-08-11 1:46 ` Theodore Y. Ts'o
2018-08-11 4:48 ` Eric W. Biederman
2018-08-11 17:47 ` Casey Schaufler
2018-08-15 4:03 ` Eric W. Biederman
2018-08-11 1:58 ` Al Viro
2018-08-11 2:17 ` Al Viro
2018-08-11 4:43 ` Eric W. Biederman
2018-08-13 12:54 ` Miklos Szeredi
2018-08-10 15:11 ` David Howells
2018-08-10 15:39 ` Theodore Y. Ts'o
2018-08-10 15:55 ` Casey Schaufler
2018-08-10 16:11 ` David Howells
2018-08-10 18:00 ` Eric W. Biederman
2018-08-10 15:53 ` David Howells
2018-08-10 16:14 ` Theodore Y. Ts'o
2018-08-10 20:06 ` Andy Lutomirski
2018-08-10 20:46 ` Theodore Y. Ts'o
2018-08-10 22:12 ` Darrick J. Wong
2018-08-10 23:54 ` Theodore Y. Ts'o
2018-08-11 0:38 ` Darrick J. Wong
2018-08-11 1:32 ` Eric W. Biederman
2018-08-13 16:35 ` Alan Cox
2018-08-13 16:48 ` Andy Lutomirski
2018-08-13 17:29 ` Al Viro
2018-08-13 19:00 ` James Morris
2018-08-13 19:20 ` Casey Schaufler
2018-08-15 23:29 ` Serge E. Hallyn
2018-08-11 0:28 ` Eric W. Biederman
2018-08-11 1:19 ` Eric W. Biederman
2018-08-11 7:29 ` David Howells
2018-08-11 16:31 ` Andy Lutomirski
2018-08-11 16:51 ` Al Viro
2018-08-15 16:31 ` Should we split the network filesystem setup into two phases? David Howells
2018-08-15 16:51 ` Andy Lutomirski
2018-08-16 3:51 ` Steve French
2018-08-16 5:06 ` Eric W. Biederman
2018-08-16 16:24 ` Steve French
2018-08-16 17:21 ` Eric W. Biederman
2018-08-16 17:23 ` Aurélien Aptel
2018-08-16 18:36 ` Steve French
2018-08-17 23:11 ` Al Viro
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