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Bug#360478: linux-image-2.6.16-1-k7: mount encrypted ide crash



Package: linux-image-2.6.16-1-k7
Version: 2.6.16-4
Severity: important

Hi,

Since 2.6.16 I experience some crashes when mounting an encrypted ide
partition. Crashes does not always happen but let's say 50% time. If it
shall crash it always happen just when mounting the partition.

Effects are : X or console freeze. Under console, SysRq Sync +
remount may allow to recover the console after some 'sleeping time'
(however no 'DONE' appearing). Later '/sbin/reboot' sometimes hangs and
SysRq reboot is the only way.

In case the console comes back one can save from dmesg:
...
BUG: soft lockup detected on CPU#0!

Pid: 4199, comm:                mount
EIP: 0060:[<b0130097>] CPU: 0
EIP is at find_get_pages+0x41/0x45
 EFLAGS: 00000246    Not tainted  (2.6.16-1-k7 #1)
EAX: 80000821 EBX: eb11fc80 ECX: eb11fc8c EDX: b17625e0
ESI: 00000001 EDI: 00000001 EBP: 00000001 DS: 007b ES: 007b
CR0: 8005003b CR2: af8d95e4 CR3: 3b954000 CR4: 000006d0
 [<b01357a4>] pagevec_lookup+0x1a/0x21
 [<b013613e>] invalidate_mapping_pages+0x92/0xa7
 [<b0136160>] invalidate_inode_pages+0xd/0x11
 [<b014c707>] kill_bdev+0xb/0x22
 [<b014cdfb>] set_blocksize+0x6f/0x7b
 [<b014ce1d>] sb_set_blocksize+0x16/0x3c
 [<f08d1089>] ext3_fill_super+0x3bd/0x1368 [ext3]
 [<b01a3a36>] snprintf+0x1a/0x1e
 [<b014c495>] get_sb_bdev+0xc5/0x10f
 [<f08cf49f>] ext3_get_sb+0x1a/0x1e [ext3]
 [<f08d0ccc>] ext3_fill_super+0x0/0x1368 [ext3]
 [<b014bca2>] do_kern_mount+0x88/0x12d
 [<b015d428>] do_mount+0x629/0x684
 [<b0152be8>] link_path_walk+0xb0/0xbb
 [<b013a193>] __handle_mm_fault+0x348/0x650
 [<b0152fb3>] do_path_lookup+0x17f/0x19a
 [<b0133b8f>] get_page_from_freelist+0x7e/0x294
 [<b0133df3>] __alloc_pages+0x4e/0x261
 [<b01341c2>] __get_free_pages+0x2f/0x34
 [<b015c27e>] copy_mount_options+0x28/0x10e
 [<b015d4f5>] sys_mount+0x72/0xad
 [<b01028ff>] sysenter_past_esp+0x54/0x75
SysRq : Emergency Sync
SysRq : Emergency Remount R/O
...

I never experienced such problem with 2.6.15. I booted with 2.6.12 and did
not see the same problem -> seems to come from 2.6.16.

I tried to reproduce it on an encrypted USB stick (to avoid any risk of
hdd corruption resulting from trials), but I couldn't -> seems linked to
hdd.

I can reproduce it on several different hdd.

FYI encryption comes from: dpkg -l cryptsetup dmsetup
ii  cryptsetup                    1.0.2+1.0.3-rc3-1 configures encrypted block devices
ii  dmsetup                       1.02.03-1         The Linux Kernel Device Mapper userspace library

Kind regards,
Franck R.

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16-1-k7
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1)

Versions of packages linux-image-2.6.16-1-k7 depends on:
ii  module-init-tools             3.2.2-2    tools for managing Linux kernel mo
ii  yaird [linux-initramfs-tool]  0.0.12-9   Yet Another mkInitRD

Versions of packages linux-image-2.6.16-1-k7 recommends:
ii  libc6-i686                    2.3.6-4    GNU C Library: Shared libraries [i

-- debconf information:
  linux-image-2.6.16-1-k7/preinst/initrd-2.6.16-1-k7:
  linux-image-2.6.16-1-k7/postinst/bootloader-test-error-2.6.16-1-k7:
  linux-image-2.6.16-1-k7/postinst/bootloader-error-2.6.16-1-k7:
  linux-image-2.6.16-1-k7/preinst/lilo-initrd-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/preinst/abort-overwrite-2.6.16-1-k7:
  linux-image-2.6.16-1-k7/preinst/bootloader-initrd-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/postinst/kimage-is-a-directory:
  linux-image-2.6.16-1-k7/postinst/old-initrd-link-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/postinst/depmod-error-2.6.16-1-k7: false
  linux-image-2.6.16-1-k7/prerm/would-invalidate-boot-loader-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/preinst/elilo-initrd-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/preinst/lilo-has-ramdisk:
* linux-image-2.6.16-1-k7/preinst/already-running-this-2.6.16-1-k7:
  linux-image-2.6.16-1-k7/prerm/removing-running-kernel-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/postinst/depmod-error-initrd-2.6.16-1-k7: false
  linux-image-2.6.16-1-k7/postinst/old-dir-initrd-link-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/preinst/overwriting-modules-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/postinst/create-kimage-link-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/postinst/old-system-map-link-2.6.16-1-k7: true
  linux-image-2.6.16-1-k7/preinst/failed-to-move-modules-2.6.16-1-k7:
  linux-image-2.6.16-1-k7/preinst/abort-install-2.6.16-1-k7:



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