From: Sasha Levin <levinsasha928@gmail.com>
To: tyhicks <tyhicks@canonical.com>,
"dustin.kirkland" <dustin.kirkland@gazzang.com>
Cc: ecryptfs <ecryptfs@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: ecryptfs: kernel BUG at fs/ecryptfs/miscdev.c:52
Date: Sat, 26 May 2012 21:39:21 +0200 [thread overview]
Message-ID: <1338061161.4284.16.camel@lappy> (raw)
Hi all,
During fuzzing with trinity inside a KVM guest, using latest linux-next kernel, I've stumbled on the following:
[ 175.995560] ------------[ cut here ]------------
[ 175.996026] kernel BUG at fs/ecryptfs/miscdev.c:52!
[ 175.996026] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 175.996026] CPU 3
[ 175.996026] Pid: 7903, comm: trinity-child3 Tainted: G W 3.4.0-next-20120524-sasha #296 Bochs Bochs
[ 175.996026] RIP: 0010:[<ffffffff813e945a>] [<ffffffff813e945a>] ecryptfs_miscdev_poll+0x5a/0x150
[ 175.996026] RSP: 0018:ffff88002d4a3aa8 EFLAGS: 00010282
[ 175.996026] RAX: 00000000ffffffea RBX: ffff88002d4a3b98 RCX: ffff880019d3c348
[ 175.996026] RDX: ffffffff84444140 RSI: 000000000b32e681 RDI: ffff88002d4a3ab0
[ 175.996026] RBP: ffff88002d4a3ad8 R08: cbf7d334712ee681 R09: 0200000000000000
[ 175.996026] R10: 2000000000000000 R11: 3408000000000000 R12: ffff88003d53c000
[ 176.022035] R13: 000000000b32e681 R14: ffff88002d4b059c R15: ffff88003d53c000
165983 iteration[ 176.026020] FS: 00007f0abac73700(0000) GS:ffff880035a00000(0000) knlGS:0000000000000000
[ 176.026020] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
s.
[ 176.026020] CR2: 00000000011750d8 CR3: 0000000039722000 CR4: 00000000000407e0
[ 176.026020] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 176.026020] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 176.026020] Process trinity-child3 (pid: 7903, threadinfo ffff88002d4a2000, task ffff88002d503000)
[ 176.026020] Stack:
[ 176.026020] ffff88002d4b069c ffff880019d3c348 ffff88002d4b069c ffff88002d4b069c
[ 176.026020] ffff88002d4a3b44 ffff88002d4a3b98 ffff88002d4a3b78 ffffffff8124d9bc
[ 176.026020] ffff88002d503000 ffff88002d503000 01ffffff811f5afe 0000000000000000
[ 176.026020] Call Trace:
[ 176.026020] [<ffffffff8124d9bc>] do_poll+0x11c/0x2b0
[ 176.026020] [<ffffffff8124dcbf>] do_sys_poll+0x16f/0x240
[ 176.026020] [<ffffffff8114dfdd>] ? __lock_acquired+0x3d/0x2e0
[ 176.026020] [<ffffffff811fade6>] ? do_wp_page+0x5c6/0x800
[ 176.026020] [<ffffffff811faf73>] ? do_wp_page+0x753/0x800
197143 iteration[ 176.026020] [<ffffffff8197e060>] ? do_raw_spin_unlock+0xd0/0xe0
s.
[ 176.026020] [<ffffffff83249080>] ? _raw_spin_unlock+0x30/0x60
[ 176.026020] [<ffffffff811fafe8>] ? do_wp_page+0x7c8/0x800
[ 176.026020] [<ffffffff8114dfdd>] ? __lock_acquired+0x3d/0x2e0
[ 176.026020] [<ffffffff8198044d>] ? debug_object_activate+0x6d/0x1b0
[ 176.026020] [<ffffffff81980532>] ? debug_object_activate+0x152/0x1b0
[ 176.026020] [<ffffffff8197e060>] ? do_raw_spin_unlock+0xd0/0xe0
[ 176.026020] [<ffffffff8114b4cd>] ? trace_hardirqs_off+0xd/0x10
[ 176.026020] [<ffffffff83249144>] ? _raw_spin_unlock_irqrestore+0x94/0xc0
[ 176.026020] [<ffffffff81980532>] ? debug_object_activate+0x152/0x1b0
[ 176.026020] [<ffffffff819611ee>] ? rb_insert_color+0x9e/0x160
[ 176.026020] [<ffffffff8110c488>] ? __hrtimer_start_range_ns+0x448/0x490
[ 176.026020] [<ffffffff8197e060>] ? do_raw_spin_unlock+0xd0/0xe0
[ 176.026020] [<ffffffff8124df6c>] sys_poll+0x6c/0x100
[ 176.026020] [<ffffffff8324a1f9>] system_call_fastpath+0x16/0x1b
[ 176.026020] Code: 00 00 44 8b 68 24 e8 66 cc e5 01 48 8d 7d d8 48 c7 c2 40 41 44 84 44 89 ee e8 a3 ef ff ff 85 c0 75 09 48 8b 7d
d8 48 85 ff 75 0e <0f> 0b 0f 1f 40 00 eb fe 66 0f 1f 44 00 00 48 83 c7 28 31 f6 e8
[ 176.026020] RIP [<ffffffff813e945a>] ecryptfs_miscdev_poll+0x5a/0x150
[ 176.026020] RSP <ffff88002d4a3aa8>
[ 176.028658] ---[ end trace 8f6ca168297608bd ]---
next reply other threads:[~2012-05-26 19:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-26 19:39 Sasha Levin [this message]
2012-06-07 0:41 ` ecryptfs: kernel BUG at fs/ecryptfs/miscdev.c:52 Sasha Levin
2012-06-13 0:05 ` [PATCH 0/3] eCryptfs: Fix and simplify messaging code Tyler Hicks
2012-06-13 0:05 ` [PATCH 1/3] eCryptfs: Gracefully refuse miscdev file ops on inherited/passed files Tyler Hicks
2012-06-22 17:47 ` Sasha Levin
2012-06-22 17:58 ` Tyler Hicks
2012-06-13 0:05 ` [PATCH 2/3] eCryptfs: Remove unused messaging declarations and function Tyler Hicks
2012-06-13 0:05 ` [PATCH 3/3] eCryptfs: Make all miscdev functions use daemon ptr in file private_data Tyler Hicks
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1338061161.4284.16.camel@lappy \
--to=levinsasha928@gmail.com \
--cc=dustin.kirkland@gazzang.com \
--cc=ecryptfs@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=tyhicks@canonical.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).