From: "Holger Hoffstätte" <holger.hoffstaette@googlemail.com>
To: Chris Bainbridge <chris.bainbridge@gmail.com>,
linux-kernel@vger.kernel.org
Cc: aryabinin@virtuozzo.com, clm@fb.com, jbacik@fb.com,
dsterba@suse.com, linux-btrfs@vger.kernel.org
Subject: Re: UBSAN: Undefined behaviour in fs/btrfs/inode.c:5845:10
Date: Tue, 26 Jan 2016 12:03:33 +0100 [thread overview]
Message-ID: <56A75285.3010502@googlemail.com> (raw)
In-Reply-To: <20160126101333.GC5054@localhost>
On 01/26/16 11:13, Chris Bainbridge wrote:
> Booting 4.5.0-rc1 with new UBSAN checker enabled:
>
> [ 3.859690] ================================================================================
> [ 3.859694] UBSAN: Undefined behaviour in fs/btrfs/inode.c:5845:10
> [ 3.859696] signed integer overflow:
> [ 3.859697] 9223372036854775807 + 1 cannot be represented in type 'long long int'
> [ 3.859701] CPU: 3 PID: 3237 Comm: polkitd Not tainted 4.5.0-rc1 #252
> [ 3.859702] Hardware name: Apple Inc. MacBookPro10,2/Mac-AFD8A9D944EA4843, BIOS MBP102.88Z.0106.B0A.1509130955 09/13/2015
> [ 3.859706] 0000000000000000 0000000000000000 0000000000000001 ffff88024d4bfcf8
> [ 3.859709] ffffffff81b2e7d9 0000000000000001 ffff88024d4bfd28 ffff88024d4bfd10
> [ 3.859711] ffffffff81bcb87d ffffffff83aceb48 ffff88024d4bfd98 ffffffff81bcbc4d
> [ 3.859712] Call Trace:
> [ 3.859719] [<ffffffff81b2e7d9>] dump_stack+0x45/0x6c
> [ 3.859723] [<ffffffff81bcb87d>] ubsan_epilogue+0xd/0x40
> [ 3.859725] [<ffffffff81bcbc4d>] handle_overflow+0xbd/0xe0
> [ 3.859728] [<ffffffff81bcbc7e>] __ubsan_handle_add_overflow+0xe/0x10
> [ 3.859732] [<ffffffff818c6271>] btrfs_real_readdir+0x881/0xc10
> [ 3.859737] [<ffffffff8148b05d>] iterate_dir+0xdd/0x2d0
> [ 3.859740] [<ffffffff8148bb0b>] SyS_getdents+0x9b/0x110
> [ 3.859743] [<ffffffff8148b250>] ? iterate_dir+0x2d0/0x2d0
> [ 3.859747] [<ffffffff82b40a57>] entry_SYSCALL_64_fastpath+0x12/0x6a
> [ 3.859749] ================================================================================
https://patchwork.kernel.org/patch/7611351/
-h
next prev parent reply other threads:[~2016-01-26 11:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-26 10:13 UBSAN: Undefined behaviour in fs/btrfs/inode.c:5845:10 Chris Bainbridge
2016-01-26 11:03 ` Holger Hoffstätte [this message]
2016-01-26 11:03 ` David Sterba
2016-01-26 11:29 ` Chris Bainbridge
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=56A75285.3010502@googlemail.com \
--to=holger.hoffstaette@googlemail.com \
--cc=aryabinin@virtuozzo.com \
--cc=chris.bainbridge@gmail.com \
--cc=clm@fb.com \
--cc=dsterba@suse.com \
--cc=jbacik@fb.com \
--cc=linux-btrfs@vger.kernel.org \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.