Kernel sometimes takes four or five resets to boot successfully

Sean Whitton sean at silentflame.com
Sun Dec 4 17:04:06 UTC 2011


Hello,

Running CRUX dual-booted with Windows 7 on two machines.  On one
everything is fine.  On the other, when I turn the machine on for the
first time in a day OR when I’ve just been in Windows and am switching
back OR a few other random times, it takes me four or five pushes of the
reset button to get it to boot.

I get part of the startup output and then just after the lines:
umount: /sys: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
mount: sysfs already mounted or /sys busy

… I get a massive spam of output, here is the part that doesn’t scroll
off:

[    3.614147]  [<c1273b6a>] ? ata_pio_sector+0x10a/0x140
[    3.614147]  [<c1273bff>] ? ata_pio_sectors+0x5f/0x90
[    3.614147]  [<c1273eba>] ? ata_sff_hsm_move+0x18a/0x790
[    3.614147]  [<c11babbd>] ? elv_queue_empty+0x1d/0x30
[    3.614147]  [<c11bd868>] ? __blk_run_queue+0x18/0x130
[    3.614147]  [<c11bda30>] ? blk_run_queue+0x20/0x40
[    3.614147]  [<c124ea92>] ? scsi_run_queue+0xv2/0x310
[    3.614147]  [<c1274696>] ? __ata_sff_port_intr+0xa6/0x100
[    3.614147]  [<c12734e0>] ? ata_bmdma_error_handler+0x0/0x110
[    3.614147]  [<c127471d>] ? ata_bmdma_port_intr_0x2d/0x110
[    3.614147]  [<c124e014>] ? scsi_decide_disposition+0x194/0x1a0
[    3.614147]  [<c12734e0>] ? ata_bmdma_error_handler+0x0/0x110
[    3.614147]  [<c12749b5>] ? ata_bmdma_interrupt+0x1b5/0x200
[    3.614147]  [<c107c8bd>] ? handle_IRQ_event+0x2d/0xc0
[    3.614147]  [<c107f6f1>] ? move_native_irq+0x11/0x50
[    3.614147]  [<c107ea03>] ? handle_edge_irq+0xa3/0x130
[    3.614147]  [<c1028ba5>] ? handle_irq+0x15/0x20
[    3.614147]  [<c1028887>] ? do_IRQ+0x47/0xc0
[    3.614147]  [<c103bd63>] ? smp_apic_timer_interrupt+0x53/0x90
[    3.614147]  [<c1026cb0>] ? common_interrupt+0x30/0x38
[    3.614147]  [<c102ca92>] ? mwait_idle+0x42/0x60
[    3.614147]  [<c1025225>] ? cpu_idle+0x85/0xb0
[    3.614147]  [<c15f06ed>] ? start_kernel+0x2c2/0x2c8
[    3.614147]  [<c15f019b>] ? unknown_bootoption+0x0/0x18f

If anyone knows the way in which I have mis-compiled my kernel, I would
love to know.  Thanks.

S
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