Re: [LKP] [x86LKP] PANIC: double fault, error_code: 0xffffffffffffffff
> As the table shows, it's not an easily reproducible bug -- the possibility is > less than 10%: I think i found the problem. Thanks. Hopefully tests will pass now. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [LKP] [x86LKP] PANIC: double fault, error_code: 0xffffffffffffffff
As the table shows, it's not an easily reproducible bug -- the possibility is less than 10%: I think i found the problem. Thanks. Hopefully tests will pass now. -Andi -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [LKP] [x86LKP] PANIC: double fault, error_code: 0xffffffffffffffff
Hi Andi, On Mon, Oct 06, 2014 at 01:37:31PM -0700, Andi Kleen wrote: > > I cannot reproduce with the config/kvm script. > > Well the user space in your initrd hangs after boot, but I presume that's some > different issue. It should not be hang, but is taking some time to do the tests, and will reboot after about 1 minute: [1.047088] Write protecting the kernel read-only data: 10240k [1.050967] Freeing unused kernel memory: 1248K (8800014c8000 - 88000160) [1.056489] Freeing unused kernel memory: 1936K (88000181c000 - 880001a0) [1.061008] random: init urandom read with 3 bits of entropy available [ 62.208919] reboot: Restarting system As the table shows, it's not an easily reproducible bug -- the possibility is less than 10%: +--++++ | | 598d570a05 | b8a868e9ea | 8048975233 | +--++++ | boot_successes | 900| 280| 79 | | boot_failures| 0 | 20 | 2 | | PANIC:double_fault, | 0 | 12 | 2 | | Kernel_panic-not_syncing:Machine_halted | 0 | 11 | 2 | | BUG:unable_to_handle_kernel | 0 | 5 | | | Oops | 0 | 3 | | | RIP:pgd_free | 0 | 1 | | | BUG:kernel_boot_crashed | 0 | 4 | | | RIP:show_stack_log_lvl | 0 | 1 | | | Kernel_panic-not_syncing:Fatal_exception | 0 | 1 | | +--++++ > Do you have a different config or setup that shows it too? The next email report titled "[x86] double fault: [#1]" happens on another config and it has much better reproduce ratio: +---+++--+ | | 598d570a05 | b8a868e9ea | v3.17-rc7_100409 | +---+++--+ | boot_successes| 207| 24 | 17 | | boot_failures | 3 | 46 | 4| | BUG:kernel_boot_crashed | 3 | | | | double_fault: | 0 | 39 | 4| | RIP:trace_hardirqs_off_thunk | 0 | 22 | 1| | BUG:unable_to_handle_kernel | 0 | 17 | 1| | Oops | 0 | 15 | 1| | RIP:show_stack_log_lvl| 0 | 14 | 1| | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 20 | 2| | RIP:trace_hardirqs_off_caller | 0 | 6 | 1| | BUG:kernel_boot_hang | 0 | 23 | 2| | backtrace:rescuer_thread | 0 | 1 | | +---+++--+ You can use the same script to reproduce it. Only the kernel needs rebuild with the attached config in that email. Thanks, Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [LKP] [x86LKP] PANIC: double fault, error_code: 0xffffffffffffffff
Hi Andi, On Mon, Oct 06, 2014 at 01:37:31PM -0700, Andi Kleen wrote: I cannot reproduce with the config/kvm script. Well the user space in your initrd hangs after boot, but I presume that's some different issue. It should not be hang, but is taking some time to do the tests, and will reboot after about 1 minute: [1.047088] Write protecting the kernel read-only data: 10240k [1.050967] Freeing unused kernel memory: 1248K (8800014c8000 - 88000160) [1.056489] Freeing unused kernel memory: 1936K (88000181c000 - 880001a0) [1.061008] random: init urandom read with 3 bits of entropy available [ 62.208919] reboot: Restarting system As the table shows, it's not an easily reproducible bug -- the possibility is less than 10%: +--++++ | | 598d570a05 | b8a868e9ea | 8048975233 | +--++++ | boot_successes | 900| 280| 79 | | boot_failures| 0 | 20 | 2 | | PANIC:double_fault, | 0 | 12 | 2 | | Kernel_panic-not_syncing:Machine_halted | 0 | 11 | 2 | | BUG:unable_to_handle_kernel | 0 | 5 | | | Oops | 0 | 3 | | | RIP:pgd_free | 0 | 1 | | | BUG:kernel_boot_crashed | 0 | 4 | | | RIP:show_stack_log_lvl | 0 | 1 | | | Kernel_panic-not_syncing:Fatal_exception | 0 | 1 | | +--++++ Do you have a different config or setup that shows it too? The next email report titled [x86] double fault: [#1] happens on another config and it has much better reproduce ratio: +---+++--+ | | 598d570a05 | b8a868e9ea | v3.17-rc7_100409 | +---+++--+ | boot_successes| 207| 24 | 17 | | boot_failures | 3 | 46 | 4| | BUG:kernel_boot_crashed | 3 | | | | double_fault: | 0 | 39 | 4| | RIP:trace_hardirqs_off_thunk | 0 | 22 | 1| | BUG:unable_to_handle_kernel | 0 | 17 | 1| | Oops | 0 | 15 | 1| | RIP:show_stack_log_lvl| 0 | 14 | 1| | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 20 | 2| | RIP:trace_hardirqs_off_caller | 0 | 6 | 1| | BUG:kernel_boot_hang | 0 | 23 | 2| | backtrace:rescuer_thread | 0 | 1 | | +---+++--+ You can use the same script to reproduce it. Only the kernel needs rebuild with the attached config in that email. Thanks, Fengguang -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [LKP] [x86LKP] PANIC: double fault, error_code: 0xffffffffffffffff
I cannot reproduce with the config/kvm script. Well the user space in your initrd hangs after boot, but I presume that's some different issue. Do you have a different config or setup that shows it too? -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [LKP] [x86LKP] PANIC: double fault, error_code: 0xffffffffffffffff
I cannot reproduce with the config/kvm script. Well the user space in your initrd hangs after boot, but I presume that's some different issue. Do you have a different config or setup that shows it too? -Andi -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
