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From: Richard Weinberger <richard@nod.at>
To: Vegard Nossum <vegard.nossum@oracle.com>,
	OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: WARNING: CPU: 0 PID: 913 at fs/inode.c:275 drop_nlink+0x4b/0x50()
Date: Mon, 23 Nov 2015 23:21:32 +0100	[thread overview]
Message-ID: <5653916C.7060601@nod.at> (raw)
In-Reply-To: <5652C676.8040207@oracle.com>



Am 23.11.2015 um 08:55 schrieb Vegard Nossum:
> Hi,
> 
> With the attached vfat disk image (fuzzed), I get the following WARNING:
> 
> WARNING: CPU: 0 PID: 913 at fs/inode.c:275 drop_nlink+0x4b/0x50()
> CPU: 0 PID: 913 Comm: a.out Not tainted 4.2.5+ #39
> Stack:
>  e0931b50 60075412 e13981e8 00000009
>  00000000 605cc684 e0931b60 605cf637
>  e0931bc0 60040f6d e0931ba0 6011e12b
> Call Trace:
>  [<60029f3b>] show_stack+0xdb/0x1a0
>  [<605cf637>] dump_stack+0x2a/0x2c
>  [<60040f6d>] warn_slowpath_common+0x9d/0xf0
>  [<6004114c>] warn_slowpath_null+0x1c/0x20
>  [<6011e12b>] drop_nlink+0x4b/0x50
>  [<601e9e2f>] vfat_rename+0x56f/0x800
>  [<60113dd2>] vfs_rename+0x9a2/0x9d0
>  [<60114439>] SyS_renameat2+0x639/0x690
>  [<601144d0>] SyS_rename+0x20/0x30
>  [<6002c5ce>] handle_syscall+0x6e/0xa0
>  [<6003a911>] userspace+0x4f1/0x5e0
> 
> To trigger it, you have to do a rename("/mnt/a/b/1", "/mnt/1"), where
> /mnt is your mountpoint.

Not here. All I get is:
FAT-fs (ubdb): Corrupted directory (i_pos 244)

Did you something before the rename()?

Thanks,
//richard

  reply	other threads:[~2015-11-23 22:21 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-23  7:55 WARNING: CPU: 0 PID: 913 at fs/inode.c:275 drop_nlink+0x4b/0x50() Vegard Nossum
2015-11-23 22:21 ` Richard Weinberger [this message]
2015-11-24  8:08   ` Vegard Nossum
2015-11-25 21:54     ` OGAWA Hirofumi
2015-11-26  8:12       ` Vegard Nossum
2015-11-26  8:26         ` OGAWA Hirofumi
2015-11-26  8:30         ` OGAWA Hirofumi
2015-12-13 22:19           ` Vegard Nossum
2015-12-14 22:19             ` Andrew Morton

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