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Subject2.6.7+BK bad: scheduling while atomic! (ALSA?)
While running alsamixergui -c 2, I got alsamixergui killed with SEGV and
the following in dmesg. Additionally, mplayer has big problems playing
through ALSA with messages
alsa-space: xrun of at least 30,716 msecs. resetting stream 0,0% 0 0 90%
and I haven't yet found the place where to turn on xrun debugging.

x86 UP PREEMPT.

bad: scheduling while atomic!
[<c02989a3>] schedule+0x463/0x470
[<c014a984>] vfs_write+0xe4/0x120
[<c014aa58>] sys_write+0x38/0x60
[<c0103eee>] work_resched+0x5/0x16
bad: scheduling while atomic!
[<c02989a3>] schedule+0x463/0x470
[<c0113aa4>] do_page_fault+0x104/0x4ff
[<c023e91f>] __kfree_skb+0xaf/0x140
[<c011635f>] sys_sched_yield+0x3f/0x50
[<c0155621>] coredump_wait+0x31/0xa0
[<c0155783>] do_coredump+0xf3/0x1b1
[<c01e405c>] pty_write+0x10c/0x110
[<c0114f5b>] recalc_task_prio+0x8b/0x180
[<c01139a0>] do_page_fault+0x0/0x4ff
[<c01048d1>] error_code+0x2d/0x38
[<c0120ed6>] __dequeue_signal+0xc6/0x160
[<c0120f93>] dequeue_signal+0x23/0x80
[<c012284b>] get_signal_to_deliver+0x24b/0x330
[<c0103c85>] do_signal+0x85/0x100
[<c012787c>] __kernel_text_address+0x1c/0x30
[<c0104b03>] print_context_stack+0x23/0x60
[<c0103eee>] work_resched+0x5/0x16
[<c0114f5b>] recalc_task_prio+0x8b/0x180
[<c0104b83>] show_trace+0x43/0x80
[<c02987b8>] schedule+0x278/0x470
[<c014a984>] vfs_write+0xe4/0x120
[<c01139a0>] do_page_fault+0x0/0x4ff
[<c0103d35>] do_notify_resume+0x35/0x38
[<c0103f12>] work_notifysig+0x13/0x15
note: alsamixergui[3027] exited with preempt_count 1
bad: scheduling while atomic!
[<c02989a3>] schedule+0x463/0x470
[<c013c21f>] zap_pmd_range+0x3f/0x60
[<c0115186>] try_to_wake_up+0x96/0xb0
[<c013c27d>] unmap_page_range+0x3d/0x70
[<c013c46e>] unmap_vmas+0x1be/0x1f0
[<c0140087>] exit_mmap+0x77/0x150
[<c0116e55>] mmput+0x55/0x70
[<c011ad23>] do_exit+0x143/0x3e0
[<c011b052>] do_group_exit+0x32/0xa0
[<c0122839>] get_signal_to_deliver+0x239/0x330
[<c0103c85>] do_signal+0x85/0x100
[<c012787c>] __kernel_text_address+0x1c/0x30
[<c0104b03>] print_context_stack+0x23/0x60
[<c0103eee>] work_resched+0x5/0x16
[<c0114f5b>] recalc_task_prio+0x8b/0x180
[<c0104b83>] show_trace+0x43/0x80
[<c02987b8>] schedule+0x278/0x470
[<c014a984>] vfs_write+0xe4/0x120
[<c01139a0>] do_page_fault+0x0/0x4ff
[<c0103d35>] do_notify_resume+0x35/0x38
[<c0103f12>] work_notifysig+0x13/0x15

--
Meelis Roos (mroos@linux.ee)

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