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From: Theodore Ts'o <tytso@mit.edu>
To: Vegard Nossum <vegard.nossum@oracle.com>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>,
	Ext4 Developers List <linux-ext4@vger.kernel.org>
Subject: Re: EXT4-fs (device loop0): panic forced after error -- bug or not?
Date: Wed, 2 Dec 2015 08:41:15 -0500	[thread overview]
Message-ID: <20151202134115.GA3356@thunk.org> (raw)
In-Reply-To: <565DD1DB.4060803@oracle.com>

On Tue, Dec 01, 2015 at 05:59:07PM +0100, Vegard Nossum wrote:
> Strange that you get EACCESS, without errors=remount-ro I get:
> 
> open("/dev/loop0", O_RDWR)              = 3
> mkdir("/mnt/ext4", 0755)                = -1 EEXIST (File exists)
> open("ext4.0", O_RDWR)                  = 4
> ioctl(3, LOOP_SET_FD, 0x4)              = 0
> close(4)                                = 0
> ioctl(3, LOOP_SET_STATUS64, {offset=0, number=0, flags=0,
> file_name="ext4.0", ...}) = 0
> mount("/dev/loop0", "/mnt/ext4", "ext4", 0, NULL) = 0
> open("/mnt/ext4", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
> getdents(4, <panic>

What is the source code of your test program, and what version of C
library are you using?  On my system, opendir() is getting translated
to:

openat(AT_FDCWD, "/vdc", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = -1 EACCES (Permission denied)

(It would have saved me time if you had sent me the source of your
test program, BTW.)

Cheers,

					- Ted

  reply	other threads:[~2015-12-02 13:41 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-01 14:22 EXT4-fs (device loop0): panic forced after error -- bug or not? Vegard Nossum
2015-12-01 15:32 ` Theodore Ts'o
2015-12-01 16:59   ` Vegard Nossum
2015-12-02 13:41     ` Theodore Ts'o [this message]
2015-12-14  7:16       ` Vegard Nossum

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