Bug 278007

Summary:	mounting cifs not possible: mount Tainted G W 2.6.29-gentoo-r5 #1
Product:	Gentoo Linux	Reporter:	Gerhard Hintermayer <gerhard.hintermayer>
Component:	[OLD] Core system	Assignee:	Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Status:	RESOLVED NEEDINFO
Severity:	major
Priority:	High
Version:	2006.1
Hardware:	x86
OS:	Linux
URL:	http://lkml.org/lkml/2009/7/22/160
Whiteboard:
Package list:		Runtime testing required:	---

Description Gerhard Hintermayer 2009-07-16 05:21:48 UTC

mounting a Windows share via
mount -t cifs -o user=aprol,password=*****,ip=10.5.12.105 //BRKVN05/AtlasPM /mnt/AtlasPM "mount: Not a directory" even though the mountpoint
exists and is a valid directory

filed this already to LKML, but got no response up to now.

Reproducible: Always

Actual Results:  
mounting not possible

Expected Results:  
mount directory as was done with kernel 2.6.19 (I know, quite old)

dmesg output (with cifsFYI set to 7):
fs/cifs/cifsfs.c: Devname: //BRKVN05/AtlasPM flags: 0
 fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 3 with uid: 0
 fs/cifs/connect.c: Username: aprol
 fs/cifs/connect.c: UNC: \\BRKVN05\AtlasPM ip: 10.5.12.105
 fs/cifs/connect.c: Socket created
 fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x2bc
 fs/cifs/connect.c: Existing smb sess not found
 fs/cifs/cifssmb.c: secFlags 0x7
 fs/cifs/transport.c: For smb_command 114
 fs/cifs/transport.c: Sending smb:  total_len 51
 fs/cifs/connect.c: Demultiplex PID: 5083
 fs/cifs/connect.c: rfc1002 length 0x6f
 fs/cifs/cifssmb.c: Dialect: 0
 fs/cifs/cifssmb.c: negprot rc 0
 fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0x1f3fd TimeAdjust:
-7200
 fs/cifs/sess.c: sess setup type 2
 fs/cifs/transport.c: For smb_command 115
 fs/cifs/transport.c: Sending smb:  total_len 242
 fs/cifs/connect.c: rfc1002 length 0xc7
 fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release
 fs/cifs/sess.c: ssetup rc from sendrecv2 is 0
 fs/cifs/sess.c: UID = 14336
 fs/cifs/sess.c: bleft 153
 fs/cifs/sess.c: words left: 0
 fs/cifs/sess.c: ssetup freeing small buf edca9740
 fs/cifs/connect.c: CIFS Session Established successfully
 fs/cifs/connect.c: file mode: 0x5f7  dir mode: 0x1ff
 fs/cifs/transport.c: For smb_command 117
 fs/cifs/transport.c: Sending smb:  total_len 90
 fs/cifs/connect.c: rfc1002 length 0x42
 fs/cifs/connect.c: disk share connection
 fs/cifs/connect.c: Tcon flags: 0x1
 fs/cifs/connect.c: CIFS Tcon rc = 0
 fs/cifs/cifssmb.c: In QFSDeviceInfo
 fs/cifs/transport.c: For smb_command 50
 fs/cifs/transport.c: Sending smb:  total_len 72
 fs/cifs/connect.c: rfc1002 length 0x44
 fs/cifs/cifssmb.c: In QFSAttributeInfo
 fs/cifs/transport.c: For smb_command 50
 fs/cifs/transport.c: Sending smb:  total_len 72
 fs/cifs/connect.c: rfc1002 length 0x50
 fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 3) rc = 0
------------[ cut here ]------------
WARNING: at fs/inode.c:362 invalidate_inodes+0xa6/0xe1()
Hardware name: PowerEdge 2950
Modules linked in: cifs nfsd exportfs ncpfs bonding floppy e1000e bnx2
thermal button processor thermal_sys e1000 nfs lockd sunrpc usbhid sg
scsi_wait_scan [last unloaded: cifs]
Pid: 5082, comm: mount Tainted: G        W  2.6.29-gentoo-r5 #1
Call Trace:
 [<c011d251>] warn_slowpath+0x71/0xa8
 [<c01158f6>] ? __wake_up+0x31/0x3b
 [<f84bc7b0>] ? cifs_init_once+0xe/0x16 [cifs]
 [<c01587e3>] ? cache_alloc_refill+0x62/0x434
 [<c0170283>] ? generic_sync_sb_inodes+0x395/0x3a5
 [<c01301de>] ? lowest_in_progress+0x43/0x4b
 [<c016982a>] invalidate_inodes+0xa6/0xe1
 [<c015c96b>] generic_shutdown_super+0x3c/0xda
 [<c015ca4c>] kill_anon_super+0x12/0x31
 [<c015cabc>] deactivate_super+0x35/0x47
 [<c016c05e>] mntput_no_expire+0xc6/0xe6
 [<c016c91d>] do_add_mount+0xd0/0xd8
 [<c016d511>] do_mount+0x631/0x654
 [<c0142138>] ? __get_free_pages+0x1e/0x24
 [<c016bc53>] ? copy_mount_options+0x2a/0xf9
 [<c016d59e>] sys_mount+0x6a/0xa8
 [<c0102cc5>] sysenter_do_call+0x12/0x25
---[ end trace ea473e21e738f567 ]---
 fs/cifs/cifsfs.c: In cifs_put_super
 fs/cifs/connect.c: CIFS VFS: in cifs_put_tcon as Xid: 4 with uid: 0
 fs/cifs/cifssmb.c: In tree disconnect
 fs/cifs/transport.c: For smb_command 113
 fs/cifs/transport.c: Sending smb:  total_len 39
 fs/cifs/connect.c: rfc1002 length 0x27
 fs/cifs/connect.c: CIFS VFS: in cifs_put_smb_ses as Xid: 5 with uid: 0
 fs/cifs/cifssmb.c: In SMBLogoff for session disconnect
 fs/cifs/transport.c: For smb_command 116
 fs/cifs/transport.c: Sending smb:  total_len 43
 fs/cifs/connect.c: rfc1002 length 0x2b

Comment 1 Gerhard Hintermayer 2009-07-17 09:18:06 UTC

looks like some slow_path issue, but I'm not familiar with these kernel details. The share I'm mounting is a Windows 2003 system. It is now successfully mounted on a quite old 2.6.19-gentoo-r5 kernel, but cannot be mounted under a recent 2.6.29-gentoo-r5. Any help is appreciated.

Gerhard

Comment 2 Gerhard Hintermayer 2009-07-22 08:57:36 UTC

Am I really the only one to encounter this problem ? Any hints on why this slow_path issues taints my kernel ? I'm not sure, If this is the right place to ask, but also the kernel mailing list wasn't answering my post.

Comment 3 Gerhard Hintermayer 2009-07-22 11:57:21 UTC

OK, solved this. Had to emerge mount-cifs and after that I could mount the share. Interesting, that mounting worked under a 2.6.19 kernel, but does'nt work under a recent kernel without using mount.cifs.

Comment 4 Gerhard Hintermayer 2009-07-22 12:24:26 UTC

Sorry, have to reopen this. Mounting does sometimes work and most of the time not (producing the above error message). Reexporting is unfortunately no supported even when using the EXPERIMENTAL flag in the cifs module option :-(

Comment 5 Mike Pagano gentoo-dev

2009-08-07 16:25:10 UTC

Just to be clear, is this still an issue? Your post on lkml seems to say otherwise.

http://lkml.indiana.edu/hypermail/linux/kernel/0907.2/02231.html

Comment 6 Mike Pagano gentoo-dev

2009-08-07 16:25:39 UTC

fat fingered that one, taking back bug