From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <80c99e791001240955m726daae0w16d5f1ab4454d7ee@mail.gmail.com> References: <80c99e791001240502v3e7c955ek130ded319bb03ef5@mail.gmail.com> <80c99e791001240955m726daae0w16d5f1ab4454d7ee@mail.gmail.com> Date: Wed, 27 Jan 2010 11:27:15 -0600 Message-ID: From: Eric Van Hensbergen To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: V9FS Developers Subject: Re: [9fans] mount acme on plan9port Topicbox-Message-UUID: c89fb2b6-ead5-11e9-9d60-3106f5b1d025 Thanks for generating the debug trace, that's a wacky place for a problem, fidcreate should just be allocating resources. I'll try and reproduce and add it to the bug list. There were some latent boofhead bugs in the option parsing code -- its possible that there's one in the trans_fd option parsing that is overflowing a buffer and corrupting memory. Thanks Again, -eric On Sun, Jan 24, 2010 at 11:55 AM, Lorenzo Bolla wrote: > > > On Sun, Jan 24, 2010 at 4:54 PM, Eric Van Hensbergen > wrote: >> >> On Sun, Jan 24, 2010 at 7:02 AM, Lorenzo Bolla wrote: >> > I'm trying to use "9 mount" to mount acme's socket (in `namespace`/acm= e) >> > to >> > some directory in /mnt (let's say /mnt/acme). I'm using ArchLInux: >> > $> uname -a >> > Linux eee 2.6.32-ARCH #1 SMP PREEMPT Sat Dec 26 08:26:17 UTC 2009 i686 >> > Intel(R) Atom(TM) CPU N280 @ 1.66GHz GenuineIntel GNU/Linux >> > The simple command: >> > mount -t 9p -o unix,trans=3Dunix,name=3Dlollo,uname=3Dlollo,noextend,n= odev >> > /tmp/ns.lollo.:0/acme /home/lollo/acme >> > and I've traced down the offending option to be "trans=3Dunix". >> > Any suggestions? >> >> you shouldn't need -o unix,trans=3Dunix -- just trans=3Dunix. >> Double check the 9pnet module is installed as well as the 9p module >> (it should be automagically in the kernel version you are running). >> Also, a good tip when trying to figure out whats going south when v9fs >> is involved is to add debug=3D0xffff into your mount options and post >> the respective sections of your /var/log/messages. >> >> Just tried it on 2.6.33-rc4 and it mounted fine >> mount -t 9p /tmp/ns.root.localhost:10/acme /mnt -o trans=3Dunix,uname=3D= root >> >> =A0 =A0 =A0 -eric >> > > Thanks for the answer Eric. > 9pnet is loaded, as well as 9p. > I've tried to mount both as a user (with sudo) and as root, with no luck. > Here is the messages I get, with debug=3D0xffff enabled. > > Jan 24 17:51:19 eee kernel: *pde =3D 00000000 > Jan 24 17:51:19 eee kernel: Modules linked in: 9p 9pnet fscache usbhid hi= d > ipv6 ntfs arc4 ecb ath9k snd_seq_dummy mac80211 i915 snd_seq_oss ath > uvcvideo snd_seq_midi_event drm_kms_helper videodev joydev > snd_hda_codec_realtek snd_seq cfg80211 v4l1_compat eeepc_laptop drm > snd_seq_device snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss iTCO_wdt > rfkill fan psmouse iTCO_vendor_support i2c_algo_bit snd_mixer_oss snd_pcm > intel_agp uhci_hcd snd_timer ehci_hcd led_class pci_hotplug ac serio_raw > pcspkr i2c_core sg atl1e thermal agpgart processor battery snd usbcore vi= deo > output soundcore button snd_page_alloc evdev rtc_cmos rtc_core rtc_lib ex= t3 > jbd mbcache sd_mod ata_piix ata_generic pata_acpi libata scsi_mod > Jan 24 17:51:19 eee kernel: > Jan 24 17:51:19 eee kernel: Pid: 22660, comm: mount Tainted: G =A0 =A0 = =A0D > =A0(2.6.32-ARCH #1) 1000HE > Jan 24 17:51:19 eee kernel: EIP: 0060:[] EFLAGS: 00010246 CPU: = 1 > Jan 24 17:51:19 eee kernel: EIP is at p9_fid_create+0x6f/0x140 [9pnet] > Jan 24 17:51:19 eee kernel: EAX: 00000001 EBX: f5a247c0 ECX: 00000000 EDX= : > 00000202 > Jan 24 17:51:19 eee kernel: ESI: f627d800 EDI: f5a247dc EBP: f6673000 ESP= : > e123fe24 > Jan 24 17:51:19 eee kernel: DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > Jan 24 17:51:19 eee kernel: f64c0fb8 00000000 00002000 f5a24540 00000000 > f627d800 f6673000 f81155fe > Jan 24 17:51:19 eee kernel: <0> f8115b82 00000023 00000286 e8083f00 00000= 000 > f5a244c6 f5a244ca f64c0fbe > Jan 24 17:51:19 eee kernel: <0> f64c0fb8 c1174cf8 e123feb8 00000000 00000= 000 > f5a24540 f59a9000 00000000 > Jan 24 17:51:19 eee kernel: [] ? p9_client_attach+0x1e/0x110 > [9pnet] > Jan 24 17:51:19 eee kernel: [] ? p9_client_create+0xe2/0x2a0 > [9pnet] > Jan 24 17:51:19 eee kernel: [] ? match_number+0x88/0xa0 > Jan 24 17:51:19 eee kernel: [] ? v9fs_session_init+0x124/0x3d0 > [9p] > Jan 24 17:51:19 eee kernel: [] ? v9fs_get_sb+0x4f/0x250 [9p] > Jan 24 17:51:19 eee kernel: [] ? vfs_kern_mount+0x69/0x170 > Jan 24 17:51:19 eee kernel: [] ? get_fs_type+0x32/0xb0 > Jan 24 17:51:19 eee kernel: [] ? do_kern_mount+0x3f/0xe0 > Jan 24 17:51:19 eee kernel: [] ? do_mount+0x1f0/0x730 > Jan 24 17:51:19 eee kernel: [] ? copy_mount_options+0xd0/0x140 > Jan 24 17:51:19 eee kernel: [] ? sys_mount+0x6e/0xa0 > Jan 24 17:51:19 eee kernel: [] ? sysenter_do_call+0x12/0x28 > Jan 24 17:51:19 eee kernel: ---[ end trace 3fd7199bdae8deac ]--- > > Thanks again for you help! > Lorenzo. > > >