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Bug#823884: marked as done (mount crashes via fstab entry)



Your message dated Tue, 10 May 2016 11:19:37 +0100
with message-id <1462875577.2626.6.camel@decadent.org.uk>
and subject line Re: Bug#823884: mount crashes via fstab entry
has caused the Debian Bug report #823884,
regarding mount crashes via fstab entry
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
823884: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=823884
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Package: mount
Version: 2.25.2-6
Severity: important

Dear Maintainer,

-- System Information:
Debian Release: 8.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.7-ckt9-5 (SMP w/4 CPU cores)
Locale: LANG=, LC_CTYPE= (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages mount depends on:
ii  libc6          2.19-18+deb8u4
ii  libmount1      2.25.2-6
ii  libselinux1    2.3-2
ii  libsmartcols1  2.25.2-6

mount recommends no packages.

Versions of packages mount suggests:
pn  nfs-common  <none>

-- no debconf information

"mount /dvd" crashes, with the following line in /etc/fstab
  /dev/sr0  /dvd  udf,iso9660  user,noauto  0  0
where /dev/sr0 is a cd/dvd drive.

A command of the form "mount /dev/sr0 /mnt" works O.K.

Debug output to /var/log/kernlog follows, see below...

After the mount error exit, an attempt to "mount /dev/sr0 /mnt"
fails with "/dev/sr0 already mounted" message.  A "umount /dev/sr0"
fails with "/dev/sr0 not mounted" message.  The sr0 device is now
unreachable/unusable until after a system reboot.

kernlog (relevant lines) >>>

May  9 11:40:51 gene64 vmunix: [326817.943679] BUG: unable to handle kernel paging request at 00000000ffffffff
May  9 11:40:51 gene64 vmunix: [326817.943785] IP: [<ffffffffa08619b0>] udf_get_last_session+0x0/0x40 [udf]
May  9 11:40:51 gene64 vmunix: [326817.943860] PGD c01ef067 PUD 0 
May  9 11:40:51 gene64 vmunix: [326817.943958] Oops: 0002 [#1] SMP 
May  9 11:40:51 gene64 vmunix: [326817.944055] Modules linked in: udf nvidia_uvm(PO) cp210x usbserial joydev nvidia(PO) ohci_pci ohci_hcd
May  9 11:40:51 gene64 vmunix: [326817.944373] CPU: 2 PID: 16969 Comm: mount Tainted: P           O  3.16.7-ckt9-5 #5
May  9 11:40:51 gene64 vmunix: [326817.944423] Hardware name: BIOSTAR Group TA970/TA970, BIOS 4.6.4 01/14/2013
May  9 11:40:51 gene64 vmunix: [326817.944465] task: ffff8802250e1890 ti: ffff8800c0120000 task.ti: ffff8800c0120000
May  9 11:40:51 gene64 vmunix: [326817.944515] RIP: 0010:[<ffffffffa08619b0>]  [<ffffffffa08619b0>] udf_get_last_session+0x0/0x40 [udf]
May  9 11:40:51 gene64 vmunix: [326817.944596] RSP: 0018:ffff8800c0123d70  EFLAGS: 00010246
May  9 11:40:51 gene64 vmunix: [326817.944637] RAX: 00000000ffffffff RBX: ffff8801e97a0580 RCX: 0000000000000428
May  9 11:40:51 gene64 vmunix: [326817.944686] RDX: 000000000000ffff RSI: 0000000000000000 RDI: ffff880209cc2000
May  9 11:40:51 gene64 vmunix: [326817.944735] RBP: ffff880209cc2000 R08: 00000000ffffffff R09: ffff8801e97a0580
May  9 11:40:51 gene64 vmunix: [326817.944784] R10: 0000000000005540 R11: 00000000000001ea R12: 0000000000000000
May  9 11:40:51 gene64 vmunix: [326817.944833] R13: 0000000000000001 R14: ffffffffa0867e50 R15: ffff880226049a40
May  9 11:40:51 gene64 vmunix: [326817.944882] FS:  00007f65bf9a6840(0000) GS:ffff88022ed00000(0000) knlGS:00000000f7707740
May  9 11:40:51 gene64 vmunix: [326817.944931] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
May  9 11:40:51 gene64 vmunix: [326817.944972] CR2: 00000000ffffffff CR3: 0000000016fab000 CR4: 00000000000407a0
May  9 11:40:51 gene64 vmunix: [326817.945021] Stack:
May  9 11:40:51 gene64 vmunix: [326817.945059]  ffffffffa0868238 ffff880226049b08 ffffffffa0867e50 ffff880226049a40
May  9 11:40:51 gene64 vmunix: [326817.945226]  ffffffff811c95e9 ffff88020000ffff ffff8800c0123df0 ffff8800c0123d00
May  9 11:40:51 gene64 vmunix: [326817.945396]  00000000ffffffff ffffffff00000000 ffffffff0000ffff 00000428ffffffff
May  9 11:40:51 gene64 vmunix: [326817.945563] Call Trace:
May  9 11:40:51 gene64 vmunix: [326817.945605]  [<ffffffffa0868238>] ? udf_fill_super+0x3e8/0x630 [udf]
May  9 11:40:51 gene64 vmunix: [326817.945648]  [<ffffffffa0867e50>] ? udf_load_vrs+0x3c0/0x3c0 [udf]
May  9 11:40:51 gene64 vmunix: [326817.945692]  [<ffffffff811c95e9>] ? snprintf+0x39/0x40
May  9 11:40:51 gene64 vmunix: [326817.945735]  [<ffffffffa0867e50>] ? udf_load_vrs+0x3c0/0x3c0 [udf]
May  9 11:40:51 gene64 vmunix: [326817.945778]  [<ffffffff810eb2c9>] ? mount_bdev+0x1a9/0x1e0
May  9 11:40:51 gene64 vmunix: [326817.945820]  [<ffffffff810ebafc>] ? mount_fs+0xc/0xc0
May  9 11:40:51 gene64 vmunix: [326817.945863]  [<ffffffff8110557d>] ? vfs_kern_mount+0x5d/0x110
May  9 11:40:51 gene64 vmunix: [326817.945905]  [<ffffffff81107e6f>] ? do_mount+0x1df/0xab0
May  9 11:40:51 gene64 vmunix: [326817.945947]  [<ffffffff810bcac3>] ? memdup_user+0x33/0x60
May  9 11:40:51 gene64 vmunix: [326817.945989]  [<ffffffff81108a5b>] ? SyS_mount+0x9b/0x110
May  9 11:40:51 gene64 vmunix: [326817.946031]  [<ffffffff814d65b2>] ? system_call_fastpath+0x16/0x1b
May  9 11:40:51 gene64 vmunix: [326817.946073] Code: 00 00 00 00 00 00 00 50 2e 8b e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 98 34 8b e0 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 
May  9 11:40:51 gene64 vmunix: [326817.948043] RIP  [<ffffffffa08619b0>] udf_get_last_session+0x0/0x40 [udf]
May  9 11:40:51 gene64 vmunix: [326817.948116]  RSP <ffff8800c0123d70>
May  9 11:40:51 gene64 vmunix: [326817.948156] CR2: 00000000ffffffff
May  9 11:40:51 gene64 vmunix: [326817.948202] ---[ end trace 14afa12cae2b6ff2 ]---

<<<END OF KERNLOG

--- End Message ---
--- Begin Message ---
On Tue, 2016-05-10 at 07:34 +0200, Andreas Henriksson wrote:
> Control: reassign -1 src:linux
> 
> Hello Gene S.
> 
> Thanks for your bug report. It seems your kernel is crashing
> and then all bets are off what happens in userspace.
> 
> Reassigning this bug report....
[...]
> > Kernel: Linux 3.16.7-ckt9-5 (SMP w/4 CPU cores)
[...]

Closing, this isn't a Debian kernel version.

Ben.

-- 
Ben Hutchings
If you seem to know what you are doing, you'll be given more to do.

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