I have a user application that seems to be soft locking the linux kernel, in this case 2.6.18 Can anyone narrow down whether this is a bug in the linux kernel (and perhaps if so, whether is was fixed in a later version) or not? Or what this user application might have done to create this issue? thanks - Michael BUG: soft lockup detected on CPU#33! Call Trace: [<a000000100013b20>] show_stack+0x40/0xa0 sp=e00000ff000b73d0 bsp=e00000ff000b1818 [<a000000100013bb0>] dump_stack+0x30/0x60 sp=e00000ff000b75a0 bsp=e00000ff000b1800 [<a0000001000e5fe0>] softlockup_tick+0x240/0x280 sp=e00000ff000b75a0 bsp=e00000ff000b17b8 [<a000000100092df0>] run_local_timers+0x30/0x60 sp=e00000ff000b75b0 bsp=e00000ff000b17a0 [<a000000100092ea0>] update_process_times+0x80/0x100 sp=e00000ff000b75b0 bsp=e00000ff000b1770 [<a000000100037220>] timer_interrupt+0x180/0x360 sp=e00000ff000b75b0 bsp=e00000ff000b1730 [<a0000001000e6650>] handle_IRQ_event+0x90/0x120 sp=e00000ff000b75b0 bsp=e00000ff000b16f0 [<a0000001000e6810>] __do_IRQ+0x130/0x420 sp=e00000ff000b75b0 bsp=e00000ff000b16a8 [<a000000100011630>] ia64_handle_irq+0xf0/0x1a0 sp=e00000ff000b75b0 bsp=e00000ff000b1678 [<a00000010000c020>] __ia64_leave_kernel+0x0/0x280 sp=e00000ff000b75b0 bsp=e00000ff000b1678 [<a000000100626b90>] _spin_unlock_irqrestore+0x30/0x60 sp=e00000ff000b7780 bsp=e00000ff000b1660 [<a0000001000989d0>] force_sig_info+0x130/0x160 sp=e00000ff000b7780 bsp=e00000ff000b1620 [<a00000010003c620>] ia64_handle_unaligned+0x2d00/0x2d20 sp=e00000ff000b7780 bsp=e00000ff000b1580 [<a00000010000c630>] ia64_prepare_handle_unaligned+0x30/0x60 sp=e00000ff000b7970 bsp=e00000ff000b1580 [<a00000010000c020>] __ia64_leave_kernel+0x0/0x280 sp=e00000ff000b7b80 bsp=e00000ff000b1580 [<a0000001000b9150>] exit_robust_list+0x250/0x2e0 sp=e00000ff000b7d50 bsp=e00000ff000b1518 [<a000000100081690>] do_exit+0x510/0x14a0 sp=e00000ff000b7d60 bsp=e00000ff000b14c0 [<a000000100082770>] do_group_exit+0x150/0x160 sp=e00000ff000b7d80 bsp=e00000ff000b1488 [<a000000100099a00>] get_signal_to_deliver+0x740/0x7c0 sp=e00000ff000b7d80 bsp=e00000ff000b1438 [<a0000001000341d0>] ia64_do_signal+0x90/0xde0 sp=e00000ff000b7d80 bsp=e00000ff000b1350 [<a0000001000139a0>] do_notify_resume_user+0x100/0x160 sp=e00000ff000b7e20 bsp=e00000ff000b1320 [<a00000010000c500>] notify_resume_user+0x40/0x60 sp=e00000ff000b7e20 bsp=e00000ff000b12d0 [<a00000010000c430>] skip_rbs_switch+0xe0/0x110 sp=e00000ff000b7e30 bsp=e00000ff000b12d0 BUG: soft lockup detected on CPU#72! Call Trace: [<a000000100013b20>] show_stack+0x40/0xa0 sp=e00000fbe5e3f3d0 bsp=e00000fbe5e39830 [<a000000100013bb0>] dump_stack+0x30/0x60 sp=e00000fbe5e3f5a0 bsp=e00000fbe5e39818 [<a0000001000e5fe0>] softlockup_tick+0x240/0x280 sp=e00000fbe5e3f5a0 bsp=e00000fbe5e397d0 [<a000000100092df0>] run_local_timers+0x30/0x60 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e397b8 [<a000000100092ea0>] update_process_times+0x80/0x100 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e39788 [<a000000100037220>] timer_interrupt+0x180/0x360 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e39748 [<a0000001000e6650>] handle_IRQ_event+0x90/0x120 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e39708 [<a0000001000e6810>] __do_IRQ+0x130/0x420 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e396c0 [<a000000100011630>] ia64_handle_irq+0xf0/0x1a0 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e39690 [<a00000010000c020>] __ia64_leave_kernel+0x0/0x280 sp=e00000fbe5e3f5b0 bsp=e00000fbe5e39690 [<a000000100009100>] ia64_spinlock_contention+0x20/0x60 sp=e00000fbe5e3f780 bsp=e00000fbe5e39690 [<a000000100626a20>] _spin_lock_irqsave+0x60/0x80 sp=e00000fbe5e3f780 bsp=e00000fbe5e39688 [<a0000001000988d0>] force_sig_info+0x30/0x160 sp=e00000fbe5e3f780 bsp=e00000fbe5e39648 [<a00000010003c620>] ia64_handle_unaligned+0x2d00/0x2d20 sp=e00000fbe5e3f780 bsp=e00000fbe5e395a8 [<a00000010000c630>] ia64_prepare_handle_unaligned+0x30/0x60 sp=e00000fbe5e3f970 bsp=e00000fbe5e395a8 [<a00000010000c020>] __ia64_leave_kernel+0x0/0x280 sp=e00000fbe5e3fb80 bsp=e00000fbe5e395a8 [<a0000001000b4ff0>] handle_futex_death+0x90/0x1a0 sp=e00000fbe5e3fd50 bsp=e00000fbe5e39568 [<a0000001000b90f0>] exit_robust_list+0x1f0/0x2e0 sp=e00000fbe5e3fd50 bsp=e00000fbe5e39518 [<a000000100081690>] do_exit+0x510/0x14a0 sp=e00000fbe5e3fd60 bsp=e00000fbe5e394c0 [<a000000100082770>] do_group_exit+0x150/0x160 sp=e00000fbe5e3fd80 bsp=e00000fbe5e39488 [<a000000100099a00>] get_signal_to_deliver+0x740/0x7c0 sp=e00000fbe5e3fd80 bsp=e00000fbe5e39438 [<a0000001000341d0>] ia64_do_signal+0x90/0xde0 sp=e00000fbe5e3fd80 bsp=e00000fbe5e39350 [<a0000001000139a0>] do_notify_resume_user+0x100/0x160 sp=e00000fbe5e3fe20 bsp=e00000fbe5e39320 [<a00000010000c500>] notify_resume_user+0x40/0x60 sp=e00000fbe5e3fe20 bsp=e00000fbe5e392d0 [<a00000010000c430>] skip_rbs_switch+0xe0/0x110 sp=e00000fbe5e3fe30 bsp=e00000fbe5e392d0 BUG: soft lockup detected on CPU#104! Call Trace: [<a000000100013b20>] show_stack+0x40/0xa0 sp=e00000fc4b03f7d0 bsp=e00000fc4b039730 [<a000000100013bb0>] dump_stack+0x30/0x60 sp=e00000fc4b03f9a0 bsp=e00000fc4b039718 [<a0000001000e5fe0>] softlockup_tick+0x240/0x280 sp=e00000fc4b03f9a0 bsp=e00000fc4b0396d8 [<a000000100092df0>] run_local_timers+0x30/0x60 sp=e00000fc4b03f9b0 bsp=e00000fc4b0396c0 [<a000000100092ea0>] update_process_times+0x80/0x100 sp=e00000fc4b03f9b0 bsp=e00000fc4b039690 [<a000000100037220>] timer_interrupt+0x180/0x360 sp=e00000fc4b03f9b0 bsp=e00000fc4b039650 [<a0000001000e6650>] handle_IRQ_event+0x90/0x120 sp=e00000fc4b03f9b0 bsp=e00000fc4b039610 [<a0000001000e6810>] __do_IRQ+0x130/0x420 sp=e00000fc4b03f9b0 bsp=e00000fc4b0395c0 [<a000000100011630>] ia64_handle_irq+0xf0/0x1a0 sp=e00000fc4b03f9b0 bsp=e00000fc4b039590 [<a00000010000c020>] __ia64_leave_kernel+0x0/0x280 sp=e00000fc4b03f9b0 bsp=e00000fc4b039590 [<a000000100004ac0>] dispatch_unaligned_handler+0x2a0/0x400 sp=e00000fc4b03fb80 bsp=e00000fc4b039580 [<a0000001000b90f0>] exit_robust_list+0x1f0/0x2e0 sp=e00000fc4b03fb80 bsp=e00000fc4b039530 -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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