[Bug 364599] [NEW] linux-rt: boot hangs

[Laurent Bonnaud]

Public bug reported:

When I try to boot this kernel on my ACER Travelmate 8200 laptop, it
hangs in the middle of the boot process.

Before the hang, this WARNING occurs, which may be related or not to the
hang:

Apr 21 10:58:41 vougeot kernel: [    3.326554] ------------[ cut here ]------------
Apr 21 10:58:41 vougeot kernel: [    3.326558] WARNING: at /build/buildd/linux-rt-2.6.28/arch/x86/kernel/signal_32.c:60
8 do_signal+0x171/0x180()
Apr 21 10:58:41 vougeot kernel: [    3.326561] Modules linked in: fbcon tileblit font bitblit softcursor
Apr 21 10:58:41 vougeot kernel: [    3.326570] Pid: 213, comm: udevd Not tainted 2.6.28-3-rt #12-Ubuntu
Apr 21 10:58:41 vougeot kernel: [    3.326572] Call Trace:
Apr 21 10:58:41 vougeot kernel: [    3.326579]  [<c050f991>] ? printk+0x18/0x1f
Apr 21 10:58:41 vougeot kernel: [    3.326585]  [<c013be54>] warn_on_slowpath+0x54/0x80
Apr 21 10:58:41 vougeot kernel: [    3.326589]  [<c0511c18>] ? _mutex_unlock+0x8/0x10
Apr 21 10:58:41 vougeot kernel: [    3.326593]  [<c02b0a8a>] ? apparmor_path_permission+0x5a/0x80
Apr 21 10:58:41 vougeot kernel: [    3.326597]  [<c0511b38>] ? rt_spin_lock+0x8/0x10
Apr 21 10:58:41 vougeot kernel: [    3.326600]  [<c0511c00>] ? _mutex_trylock+0x0/0x10
Apr 21 10:58:41 vougeot kernel: [    3.326604]  [<c01970ea>] ? generic_file_aio_write+0x6a/0xe0
Apr 21 10:58:41 vougeot kernel: [    3.326607]  [<c0511b38>] ? rt_spin_lock+0x8/0x10
Apr 21 10:58:41 vougeot kernel: [    3.326612]  [<c01d9e59>] ? mnt_drop_write+0x49/0xf0
Apr 21 10:58:41 vougeot kernel: [    3.326617]  [<c01c2ab1>] ? do_sync_write+0xd1/0x110
Apr 21 10:58:41 vougeot kernel: [    3.326620]  [<c0103eb1>] do_signal+0x171/0x180
Apr 21 10:58:41 vougeot kernel: [    3.326626]  [<c0151a40>] ? autoremove_wake_function+0x0/0x50
Apr 21 10:58:41 vougeot kernel: [    3.326629]  [<c0511b38>] ? rt_spin_lock+0x8/0x10
Apr 21 10:58:41 vougeot kernel: [    3.326632]  [<c01c279d>] ? fsnotify_modify+0x6d/0x80
Apr 21 10:58:41 vougeot kernel: [    3.326636]  [<c01c3156>] ? vfs_write+0xa6/0x110
Apr 21 10:58:41 vougeot kernel: [    3.326639]  [<c01c29e0>] ? do_sync_write+0x0/0x110
Apr 21 10:58:41 vougeot kernel: [    3.326642]  [<c01c327d>] ? sys_write+0x3d/0x70
Apr 21 10:58:41 vougeot kernel: [    3.326645]  [<c0103efd>] do_notify_resume+0x3d/0x40
Apr 21 10:58:41 vougeot kernel: [    3.326648]  [<c0104200>] work_notifysig+0x13/0x23
Apr 21 10:58:41 vougeot kernel: [    3.326651] ---[ end trace cf49e534c91c48d1 ]---

I have attached a full kernel log to this report.

Note that previous linux-rt kernels in previous Ubuntu releases (at
least intrepid) would boot on the same hardware.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: linux-image-2.6.28-3-rt 2.6.28-3.12
SourcePackage: linux-rt
Uname: Linux 2.6.28-11-generic i686

** Affects: linux-rt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

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linux-rt: boot hangs
https://bugs.launchpad.net/bugs/364599
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