From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jakob Unterwurzacher <jakobunt@gmail.com>,
Marios Titas <redneb@gmx.com>,
Miklos Szeredi <mszeredi@redhat.com>
Subject: [PATCH 4.9 09/23] fuse: fix READDIRPLUS skipping an entry
Date: Tue, 31 Oct 2017 10:55:33 +0100 [thread overview]
Message-ID: <20171031095517.819426673@linuxfoundation.org> (raw)
In-Reply-To: <20171031095517.400573240@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Miklos Szeredi <mszeredi@redhat.com>
commit c6cdd51404b7ac12dd95173ddfc548c59ecf037f upstream.
Marios Titas running a Haskell program noticed a problem with fuse's
readdirplus: when it is interrupted by a signal, it skips one directory
entry.
The reason is that fuse erronously updates ctx->pos after a failed
dir_emit().
The issue originates from the patch adding readdirplus support.
Reported-by: Jakob Unterwurzacher <jakobunt@gmail.com>
Tested-by: Marios Titas <redneb@gmx.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 0b05b18381ee ("fuse: implement NFS-like readdirplus support")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/fuse/dir.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1312,7 +1312,8 @@ static int parse_dirplusfile(char *buf,
*/
over = !dir_emit(ctx, dirent->name, dirent->namelen,
dirent->ino, dirent->type);
- ctx->pos = dirent->off;
+ if (!over)
+ ctx->pos = dirent->off;
}
buf += reclen;
next prev parent reply other threads:[~2017-10-31 10:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 9:55 [PATCH 4.9 00/23] 4.9.60-stable review Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 01/23] workqueue: replace pool->manager_arb mutex with a flag Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 02/23] ALSA: hda/realtek - Add support for ALC236/ALC3204 Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 03/23] ALSA: hda - fix headset mic problem for Dell machines with alc236 Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 04/23] ceph: unlock dangling spinlock in try_flush_caps() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 05/23] usb: xhci: Handle error condition in xhci_stop_device() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 06/23] KVM: PPC: Fix oops when checking KVM_CAP_PPC_HTM Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 07/23] spi: uapi: spidev: add missing ioctl header Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 08/23] spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path Greg Kroah-Hartman
2017-10-31 9:55 ` Greg Kroah-Hartman [this message]
2017-10-31 9:55 ` [PATCH 4.9 10/23] xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 11/23] Input: elan_i2c - add ELAN0611 to the ACPI table Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 12/23] Input: gtco - fix potential out-of-bound access Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 13/23] assoc_array: Fix a buggy node-splitting case Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 14/23] scsi: zfcp: fix erp_action use-before-initialize in REC action trace Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 15/23] scsi: sg: Re-fix off by one in sg_fill_request_table() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 16/23] drm/amd/powerplay: fix uninitialized variable Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 17/23] can: sun4i: fix loopback mode Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 18/23] can: kvaser_usb: Correct return value in printout Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 19/23] can: kvaser_usb: Ignore CMD_FLUSH_QUEUE_REPLY messages Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 20/23] cfg80211: fix connect/disconnect edge cases Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 21/23] ipsec: Fix aborted xfrm policy dump crash Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 22/23] regulator: fan53555: fix I2C device ids Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.9 23/23] ecryptfs: fix dereference of NULL user_key_payload Greg Kroah-Hartman
[not found] ` <59f8951e.87d8500a.cbc53.9419@mx.google.com>
2017-10-31 16:52 ` [PATCH 4.9 00/23] 4.9.60-stable review Greg Kroah-Hartman
2017-10-31 17:01 ` Mark Brown
2017-10-31 17:19 ` Guenter Roeck
2017-10-31 20:08 ` Shuah Khan
2017-10-31 20:59 ` Tom Gall
2017-11-01 15:21 ` Greg Kroah-Hartman
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