[Pkg-uml-pkgs] Bug#457727: user-mode-linux: uml kernel shows a BUG trace

[Cesar Enrique Garcia Dabo]

Package: user-mode-linux
Version: 2.6.18-1um-2etch.16
Severity: normal

 I have been using UML and dmesg (on the guest) has reported two bugs. The host was under high load and also the guest. Here is the messages that where reported by the guest kernel:

BUG: soft lockup detected on CPU#0!
0a63fc04:  [<0805d048>] dump_stack+0x1c/0x20
0a63fc1c:  [<0808eaab>] softlockup_tick+0x77/0x7e
0a63fc30:  [<0807d4db>] run_local_timers+0x12/0x14
0a63fc38:  [<0807d31a>] update_process_times+0x3d/0x66
0a63fc4c:  [<0805d446>] timer_handler+0x2e/0x50
0a63fc64:  [<0806dd5a>] sig_handler_common_skas+0xc6/0xec
0a63fc8c:  [<0806aab3>] real_alarm_handler+0x42/0x49
0a63fca0:  [<0806ab21>] unblock_signals+0x67/0x6e
0a63fcac:  [<0806d82a>] userspace+0x214/0x240
0a63fcfc:  [<0805ebdb>] fork_handler+0x97/0x9f
0a63fd1c:  [<b7fbc420>] 0xb7fbc420

BUG: soft lockup detected on CPU#0!
0a5dfa94:  [<0805d048>] dump_stack+0x1c/0x20
0a5dfaac:  [<0808eaab>] softlockup_tick+0x77/0x7e
0a5dfac0:  [<0807d4db>] run_local_timers+0x12/0x14
0a5dfac8:  [<0807d31a>] update_process_times+0x3d/0x66
0a5dfadc:  [<0805d446>] timer_handler+0x2e/0x50
0a5dfaf4:  [<0806dd5a>] sig_handler_common_skas+0xc6/0xec
0a5dfb1c:  [<0806aab3>] real_alarm_handler+0x42/0x49
0a5dfb30:  [<0806ab21>] unblock_signals+0x67/0x6e
0a5dfb3c:  [<0806ab42>] set_signals+0x1a/0x2b
0a5dfb48:  [<08060b6c>] line_write+0xa5/0xb0
0a5dfb64:  [<08060ac2>] line_put_char+0x1a/0x1f
0a5dfb7c:  [<081418b6>] opost+0x1ab/0x1c6
0a5dfb9c:  [<081432cb>] write_chan+0x103/0x1b1
0a5dfbd0:  [<0813ec28>] tty_write+0x141/0x1cb
0a5dfc10:  [<080a9fbb>] vfs_write+0xa7/0x150
0a5dfc3c:  [<080aa103>] sys_write+0x3c/0x63
0a5dfc68:  [<0805eeaf>] handle_syscall+0x87/0xa0
0a5dfcb4:  [<0806d812>] userspace+0x1fc/0x240
0a5dfcfc:  [<0805ebdb>] fork_handler+0x97/0x9f
0a5dfd1c:  [<b7fbc420>] 0xb7fbc420



-- System Information:
Debian Release: 4.0
  APT prefers proposed-updates
  APT policy: (500, 'proposed-updates'), (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-5-686
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages user-mode-linux depends on:
ii  uml-utilities                 20060323-3 User-mode Linux (utility programs)

user-mode-linux recommends no packages.

-- no debconf information