From: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
To: Andrew Morton <akpm@linux-foundation.org>,
Christoph Hellwig <hch@lst.de>, Jan Kara <jack@suse.cz>
Cc: linux-kernel@vger.kernel.org
Subject: next-20140114 - BUG: spinlock wrong CPU on CPU#3, mount/597
Date: Wed, 15 Jan 2014 13:20:12 -0500 [thread overview]
Message-ID: <14473.1389810012@turing-police.cc.vt.edu> (raw)
[-- Attachment #1: Type: text/plain, Size: 2538 bytes --]
Am seeing this at boot on next-20140114, but I hit this same exact stack trace
at least once on next-20131218. v3.13-rc7 doesn't have the problem, so it's
not a 3.13 release showstopper. I may not be able to bisect this, as there's 2
or 3 other now-fixed bugs that cause lots of 'bisect skips' because the system
won't boot far enough to hit this issue.
I'm not sure who to blame - Jan beat up on fs/notify/notification.c pretty
heavily a few days ago, but I hit this at least once last month and that file
hasn't been touched since 2012, so the root cause is probably elsewhere.
I'm reasonably sure that rebuilding with CONFIG_DEBUG_SPINLOCK=n will "fix"
my issue, but that's just papering it over...
[ 93.724597] SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
[ 93.759851] BUG: spinlock wrong CPU on CPU#3, mount/597
[ 93.759854] lock: 0xffff8800b87f04a8, .magic: dead4ead, .owner: mount/597, .owner_cpu: 35
[ 93.759857] CPU: 3 PID: 597 Comm: mount Not tainted 3.13.0-rc8-next-20140114 #151
[ 93.759858] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A11 03/12/2013
[ 93.759863] 0000000000000000 ffff8800b87e7cd8 ffffffff8164e7e7 ffff8800b8194590
[ 93.759867] ffff8800b87e7cf8 ffffffff8107c42c ffff8800b87f04a8 0000000000000001
[ 93.759871] ffff8800b87e7d18 ffffffff8107c457 ffff8800b87f04a8 ffffffff81aa8b43
[ 93.759872] Call Trace:
[ 93.759879] [<ffffffff8164e7e7>] dump_stack+0x4f/0xa2
[ 93.759883] [<ffffffff8107c42c>] spin_dump+0x8c/0x91
[ 93.759886] [<ffffffff8107c457>] spin_bug+0x26/0x28
[ 93.759889] [<ffffffff8107c75e>] do_raw_spin_unlock+0xdc/0xf3
[ 93.759892] [<ffffffff816586b0>] _raw_spin_unlock_irqrestore+0x27/0x83
[ 93.759895] [<ffffffff81073b76>] __wake_up+0x3f/0x46
[ 93.759899] [<ffffffff811630c6>] fsnotify_add_notify_event+0xba/0xdf
[ 93.759902] [<ffffffff81166058>] ? SyS_inotify_rm_watch+0xf3/0xf3
[ 93.759905] [<ffffffff81166265>] fanotify_handle_event+0x16f/0x256
[ 93.759910] [<ffffffff8112069b>] ? ac_get_obj.constprop.61+0x39/0x1be
[ 93.759913] [<ffffffff8116293b>] send_to_group.isra.1+0x114/0x123
[ 93.759915] [<ffffffff81162c49>] fsnotify+0x2dd/0x41d
[ 93.759918] [<ffffffff8165864a>] ? _raw_spin_unlock+0x5b/0x67
[ 93.759922] [<ffffffff8112a73d>] do_sys_open+0x109/0x12e
[ 93.759925] [<ffffffff8112a77b>] SyS_open+0x19/0x1b
[ 93.759928] [<ffffffff8165f7a2>] system_call_fastpath+0x16/0x1b
[ 93.994336] SELinux: initialized (dev hugetlbfs, type hugetlbfs), uses transition SIDs
Any brilliant ideas?
[-- Attachment #2: Type: application/pgp-signature, Size: 848 bytes --]
next reply other threads:[~2014-01-15 18:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-15 18:20 Valdis Kletnieks [this message]
2014-01-16 10:39 ` Jan Kara
2014-01-16 16:20 ` Valdis.Kletnieks
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=14473.1389810012@turing-police.cc.vt.edu \
--to=valdis.kletnieks@vt.edu \
--cc=akpm@linux-foundation.org \
--cc=hch@lst.de \
--cc=jack@suse.cz \
--cc=linux-kernel@vger.kernel.org \
/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
all inboxes | Powered by JetHome®