From: Dave Jones <davej@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Al Viro <viro@zeniv.linux.org.uk>,
"Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: BUG_ON(nd->inode != parent->d_inode);
Date: Fri, 8 Mar 2013 22:50:53 -0500 [thread overview]
Message-ID: <20130309035053.GA1396@redhat.com> (raw)
In-Reply-To: <CA+55aFweyfew3VU79ZQV4otJcWiF0=xKXxDtADXcccNxGaqMwA@mail.gmail.com>
On Fri, Mar 08, 2013 at 07:36:34PM -0800, Linus Torvalds wrote:
> Note that my tree does not have the pipe changes. Um still not sure about
> the cause, see the patch with a warn-on-once in it. I don't like just
> adding the NULL pointer checks willy nilly without understanding why they
> made...
Yeah, understood. I still have that patched.
> > To be honest I've lost track of the whole collection.
> > Let me repull your latest tree, and see what falls out.
> > (I'll turn off CONFIG_USER_NS for now too until that gets fixed)
> >
> > I have a feeling there were some sysfs ones that may still be unfixed.
I was right..
[ 425.836722] general protection fault: 0000 [#1] PREEMPT SMP
[ 425.837529] Modules linked in: hidp l2tp_ppp l2tp_netlink l2tp_core cmtp kernelcapi bnep rfcomm scsi_transport_iscsi can_raw ipt_ULOG nfnetlink irda can_bcm ipx caif_socket appletalk x25 p8023 af_key caif psnap p8022 crc_ccitt phonet netrom rose rds llc2 nfc llc af_802154 can ax25 pppoe decnet af_rxrpc pppox ppp_generic slhc atm lockd sunrpc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_conntrack nf_conntrack ip6table_filter ip6_tables snd_hda_codec_realtek snd_hda_intel snd_hda_codec btusb bluetooth snd_pcm snd_page_alloc snd_timer snd usb_debug microcode rfkill pcspkr serio_raw soundcore edac_core vhost_net tun macvtap macvlan kvm_amd r8169 kvm mii radeon backlight drm_kms_helper ttm
[ 425.846148] CPU 2
[ 425.846387] Pid: 15263, comm: trinity-child3 Not tainted 3.9.0-rc1+ #88 Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H
[ 425.847859] RIP: 0010:[<ffffffff8123f657>] [<ffffffff8123f657>] sysfs_find_dirent+0x47/0xf0
[ 425.848919] RSP: 0018:ffff88011aab5d38 EFLAGS: 00010202
[ 425.849581] RAX: 000000000ad55669 RBX: 6b6b6b6b6b6b6b6b RCX: 000000006b6b6b6b
[ 425.850468] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 425.851356] RBP: ffff88011aab5d58 R08: 0000000000000000 R09: 0000000000000000
[ 425.852237] R10: 0000000000000000 R11: 0000000000000000 R12: 000000007640c1d4
[ 425.853119] R13: ffff880105b41e48 R14: 0000000000000000 R15: ffff880127110000
[ 425.854001] FS: 00007f7cdb71d740(0000) GS:ffff88012b200000(0000) knlGS:0000000000000000
[ 425.855000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 425.855712] CR2: 0000000000000001 CR3: 0000000102df4000 CR4: 00000000000007e0
[ 425.856599] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 425.857486] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 425.858368] Process trinity-child3 (pid: 15263, threadinfo ffff88011aab4000, task ffff880127110000)
[ 425.859490] Stack:
[ 425.859747] ffff880113228d58 ffff880105b41e10 fffffffffffffffe ffff88010887eee8
[ 425.860718] ffff88011aab5d88 ffffffff8123f76d ffff880105b41e10 ffff8801088804a0
[ 425.861683] ffff88011aab5f28 0000000000000000 ffff88011aab5db8 ffffffff811c5b7d
[ 425.862648] Call Trace:
[ 425.862960] [<ffffffff8123f76d>] sysfs_lookup+0x6d/0xe0
[ 425.863623] [<ffffffff811c5b7d>] lookup_real+0x1d/0x60
[ 425.864274] [<ffffffff811c5d98>] __lookup_hash+0x38/0x50
[ 425.864951] [<ffffffff811c5dc9>] lookup_hash+0x19/0x20
[ 425.865607] [<ffffffff811c9275>] kern_path_create+0x95/0x170
[ 425.866322] [<ffffffff811c7726>] ? getname_flags.part.33+0x86/0x150
[ 425.868909] [<ffffffff811c939a>] user_path_create+0x4a/0x70
[ 425.871401] [<ffffffff811cc668>] sys_linkat+0x88/0x230
[ 425.873841] [<ffffffff8134b06e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 425.876433] [<ffffffff811cc82e>] sys_link+0x1e/0x20
[ 425.878839] [<ffffffff816d0d42>] system_call_fastpath+0x16/0x1b
[ 425.881364] Code: 00 48 8b 9f 88 00 00 00 f6 c4 0f 0f 95 c0 48 85 f6 0f 95 c2 38 d0 75 79 4c 89 ee 4c 89 f7 e8 91 ef ff ff 41 89 c4 48 85 db 74 1d <8b> 4b 28 41 39 cc 74 21 44 89 e0 29 c8 83 f8 00 7c 2c 74 45 48
I'll try some more divide and conquer debugging in a while.
Dave
next prev parent reply other threads:[~2013-03-09 3:51 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-07 2:16 BUG_ON(nd->inode != parent->d_inode); Dave Jones
2013-03-07 15:30 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 17:30 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-07 19:35 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 20:33 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-07 21:38 ` ipc/testmsg GPF Dave Jones
2013-03-07 21:45 ` Linus Torvalds
2013-03-07 21:49 ` David Miller
2013-03-07 21:51 ` Linus Torvalds
2013-03-07 22:03 ` Dave Jones
2013-03-07 22:36 ` pipe_release oops Dave Jones
2013-03-07 23:14 ` fasync_remove_entry oops Dave Jones
2013-03-07 23:46 ` Linus Torvalds
2013-03-07 23:54 ` Dave Jones
2013-03-08 0:20 ` Dave Jones
2013-03-08 0:21 ` pipe_release oops Linus Torvalds
2013-03-08 14:53 ` Dave Jones
2013-03-08 18:30 ` Linus Torvalds
2013-03-08 18:26 ` Jörn Engel
2013-03-10 23:33 ` Al Viro
2013-03-12 19:09 ` Jörn Engel
2013-03-10 22:10 ` Al Viro
2013-03-11 0:35 ` Al Viro
2013-03-11 15:10 ` Linus Torvalds
2013-03-11 18:05 ` Al Viro
2013-03-12 13:06 ` Al Viro
2013-03-12 15:31 ` Linus Torvalds
2013-03-12 19:43 ` Al Viro
2013-03-12 19:56 ` Dave Jones
2013-03-12 20:09 ` Linus Torvalds
2013-03-12 20:51 ` Al Viro
2013-03-27 13:51 ` Yet another pipe related oops Dave Jones
2013-03-27 15:20 ` Al Viro
2013-03-27 16:33 ` Linus Torvalds
2013-03-27 16:53 ` Raymond Jennings
2013-03-27 17:45 ` Al Viro
2013-04-01 20:34 ` Al Viro
2013-04-01 21:00 ` Greg Kroah-Hartman
2013-04-01 21:21 ` Al Viro
2013-04-01 21:44 ` Greg Kroah-Hartman
2013-04-01 23:27 ` Al Viro
2013-04-02 0:22 ` Al Viro
2013-04-02 1:55 ` Greg Kroah-Hartman
2013-03-12 1:27 ` pipe_release oops Dave Jones
2013-03-09 0:27 ` ipc/testmsg GPF Peter Hurley
2013-03-09 0:32 ` Dave Jones
2013-03-11 18:26 ` Dave Jones
2013-03-11 19:03 ` Peter Hurley
2013-03-12 22:02 ` Andrew Morton
2013-03-12 22:33 ` Dave Jones
2013-03-15 21:21 ` Dave Jones
2013-03-25 16:37 ` Dave Jones
2013-03-25 18:28 ` Peter Hurley
2013-03-25 18:39 ` Dave Jones
2013-03-07 22:18 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 22:50 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-07 23:03 ` BUG_ON(nd->inode->i_op->follow_link); Dave Jones
2013-03-07 23:55 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-11 0:02 ` BUG_ON(nd->inode->i_op->follow_link); Al Viro
2013-03-10 23:04 ` BUG_ON(nd->inode->i_op->follow_link); Al Viro
2013-03-12 18:31 ` BUG_ON(nd->inode->i_op->follow_link); Linus Torvalds
2013-03-08 15:04 ` BUG_ON(nd->inode != parent->d_inode); Dave Jones
2013-03-08 18:51 ` Linus Torvalds
2013-03-08 19:18 ` Dave Jones
2013-03-08 19:20 ` Dave Jones
2013-03-08 19:36 ` Dave Jones
2013-03-08 19:47 ` Linus Torvalds
2013-03-08 21:04 ` Dave Jones
2013-03-08 22:41 ` Linus Torvalds
2013-03-08 23:07 ` Dave Jones
2013-03-08 23:14 ` Dave Jones
2013-03-08 23:20 ` Linus Torvalds
2013-03-08 23:28 ` Linus Torvalds
2013-03-08 23:34 ` Dave Jones
2013-03-08 23:47 ` Dave Jones
2013-03-08 23:51 ` Linus Torvalds
2013-03-08 23:30 ` Dave Jones
2013-03-08 23:45 ` Linus Torvalds
2013-03-08 23:55 ` Dave Jones
2013-03-09 0:02 ` Linus Torvalds
2013-03-09 0:19 ` Dave Jones
2013-03-09 0:29 ` Raymond Jennings
2013-03-09 0:36 ` Dave Jones
2013-03-09 1:18 ` Linus Torvalds
2013-03-09 2:03 ` Dave Jones
2013-03-09 2:08 ` Linus Torvalds
2013-03-09 2:26 ` Dave Jones
2013-03-09 2:56 ` Dave Jones
2013-03-09 2:57 ` Dave Jones
[not found] ` <CA+55aFxyOYXnzDoWr7Utr1QLjjMUCON5EGH3FMvGBHxnxMJmQQ@mail.gmail.com>
2013-03-09 3:25 ` Dave Jones
2013-03-09 3:38 ` Eric W. Biederman
2013-03-09 4:26 ` Dave Jones
2013-03-09 8:28 ` Eric W. Biederman
[not found] ` <CA+55aFweyfew3VU79ZQV4otJcWiF0=xKXxDtADXcccNxGaqMwA@mail.gmail.com>
2013-03-09 3:50 ` Dave Jones [this message]
2013-03-09 4:31 ` Linus Torvalds
2013-03-09 4:39 ` Dave Jones
2013-03-09 5:13 ` Sasha Levin
2013-03-09 5:16 ` Dave Jones
2013-03-09 3:27 ` Eric W. Biederman
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