Re: Bug#823884: mount crashes via fstab entry
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....
Regards,
Andreas Henriksson
On Mon, May 09, 2016 at 05:22:37PM -0700, Gene S wrote:
> 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
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