Gilles, I will give it a try with stack unwinding disabled and report back.
Why I picked up this warning was because I mostly get kernel panics when unplugging usb devices: http://pastebin.com/uAhDGuzm I thought this is to do with the warning when booting the kernel. On 23 February 2014 23:08, Adam Vaughan <[email protected]> wrote: > * I also missed that it was a warning. Sorry about that. > > > On Sun, Feb 23, 2014 at 5:37 PM, Adam Vaughan <[email protected]> wrote: > >> I haven't tried using the official Xenomai Raspberry Pi 3.8.13 patch for >> a few months now because I had some issue disabling the USB FIQ and I >> needed to run alternate FIQ code. I can't remember exactly what error I >> was seeing, but my stopgap solution was to fall back to 3.5.7 (detailed >> below). I believe the USB FIQ disable issue I was seeing has been fixed in >> more recent RPi kernels [1], but I haven't had a chance yet to try out that >> patch with the Xenomai RPi 3.8.13 kernel. It is curious that your 3.8.13 >> kernel log throws the exception at the same location just after the hub >> detection as in [1] and involves the same USB code. Perhaps they're >> related? >> >> If any kernel will work and you need to get up and going now, I had the >> most success with the set of 3.5.7 patches at [2] (Google translate does a >> good job translating the French, but it can also change acronyms in the >> text such as RTDM to TDGR). I did, however, have occasional 3.5.7 kernel >> crashes at ext4 code with two different SD cards which haven't occurred >> again since moving to the 3.10.11 Raspian distro (I'm working on frontend >> code right now, and it's just easier doing it with vetted binaries). These >> infrequent crashes seemed to be associated with heavy file system accesses, >> but it wasn't enough of issue that I needed to find a solution right then. >> >> [1] https://github.com/raspberrypi/linux/issues/355 >> [2] >> http://www.blaess.fr/christophe/2013/02/15/raspberry-pi-interruptions-gpio-avec-rtdm/ >> >> >> On Sun, Feb 23, 2014 at 4:27 PM, Gregory Dymarek <[email protected]>wrote: >> >>> Hi, >>> >>> >>> I compiled a fresh rpi-3.8 kernel using the following patches (from >>> xenomai-2.6.3): >>> - ipipe-core-3.8.13-raspberry-pre-2.patch >>> - ipipe-core-3.8.13-arm-3.patch >>> - ipipe-core-3.8.13-raspberry-post-2.patch >>> >>> All compiled well, but when booting this kernel it reports an exception. >>> The entire boot log is here: http://pastebin.com/K7v44nPw >>> >>> I am still not very faimiliar with the architecture so I am not really >>> able >>> to sort it myself... >>> Any advise please? >>> >>> [ 1.915956] hub 1-0:1.0: 1 port detected >>> [ 1.923672] ------------[ cut here ]------------ >>> [ 1.931807] WARNING: at kernel/irq/handle.c:146 >>> handle_irq_event_percpu+0x190/0x1b4() >>> [ 1.943148] irq 32 handler usb_hcd_irq+0x0/0x7c enabled interrupts >>> [ 1.952840] Modules linked in: >>> [ 1.959469] [<c00141ec>] (unwind_backtrace+0x0/0xec) from [<c00204fc>] >>> (warn_slowpath_common+0x4c/0x64) >>> [ 1.972561] [<c00204fc>] (warn_slowpath_common+0x4c/0x64) from >>> [<c0020544>] (warn_slowpath_fmt+0x30/0x40) >>> [ 1.985872] [<c0020544>] (warn_slowpath_fmt+0x30/0x40) from >>> [<c0077838>] >>> (handle_irq_event_percpu+0x190/0x1b4) >>> [ 1.999671] [<c0077838>] (handle_irq_event_percpu+0x190/0x1b4) from >>> [<c00778c0>] (handle_irq_event+0x64/0x94) >>> [ 2.013394] [<c00778c0>] (handle_irq_event+0x64/0x94) from >>> [<c007a6c4>] >>> (handle_level_irq+0x78/0x108) >>> [ 2.026432] [<c007a6c4>] (handle_level_irq+0x78/0x108) from >>> [<c0077010>] >>> (generic_handle_irq+0x1c/0x30) >>> [ 2.039690] [<c0077010>] (generic_handle_irq+0x1c/0x30) from >>> [<c000eacc>] (handle_IRQ+0x30/0x84) >>> [ 2.052361] [<c000eacc>] (handle_IRQ+0x30/0x84) from [<c008036c>] >>> (__ipipe_do_sync_stage+0x25c/0x278) >>> [ 2.065548] [<c008036c>] (__ipipe_do_sync_stage+0x25c/0x278) from >>> [<c00083c4>] (__ipipe_grab_irq+0x2c/0x70) >>> [ 2.079312] [<c00083c4>] (__ipipe_grab_irq+0x2c/0x70) from >>> [<c0422d14>] >>> (__irq_svc+0x34/0xc0) >>> [ 2.091773] Exception stack(0xcd82de00 to 0xcd82de48) >>> [ 2.100766] de00: f2980008 00000000 00000000 00000000 00000000 >>> 00000000 >>> cd99ec00 c05db7c4 >>> [ 2.112995] de20: cd9ed380 c05bbfc0 c0523a7c c05db8a4 00000030 >>> cd82de48 >>> c02f947c c02f8e44 >>> [ 2.125241] de40: 60000113 ffffffff >>> [ 2.132818] [<c0422d14>] (__irq_svc+0x34/0xc0) from [<c02f8e44>] >>> (dwc_otg_driver_probe+0x114/0x7e0) >>> [ 2.146103] [<c02f8e44>] (dwc_otg_driver_probe+0x114/0x7e0) from >>> [<c02aa504>] (really_probe+0x60/0x1e8) >>> [ 2.159771] [<c02aa504>] (really_probe+0x60/0x1e8) from [<c02aa778>] >>> (__driver_attach+0x98/0x9c) >>> [ 2.172812] [<c02aa778>] (__driver_attach+0x98/0x9c) from [<c02a8b70>] >>> (bus_for_each_dev+0x60/0x94) >>> [ 2.186145] [<c02a8b70>] (bus_for_each_dev+0x60/0x94) from >>> [<c02a9cb8>] >>> (bus_add_driver+0xac/0x244) >>> [ 2.199589] [<c02a9cb8>] (bus_add_driver+0xac/0x244) from [<c02aae20>] >>> (driver_register+0x78/0x140) >>> [ 2.213103] [<c02aae20>] (driver_register+0x78/0x140) from >>> [<c05a0074>] >>> (dwc_otg_driver_init+0x20/0xe0) >>> [ 2.226973] [<c05a0074>] (dwc_otg_driver_init+0x20/0xe0) from >>> [<c00086e0>] (do_one_initcall+0x114/0x180) >>> [ 2.241020] [<c00086e0>] (do_one_initcall+0x114/0x180) from >>> [<c058c86c>] >>> (kernel_init_freeable+0xf8/0x1b8) >>> [ 2.255236] [<c058c86c>] (kernel_init_freeable+0xf8/0x1b8) from >>> [<c041c210>] (kernel_init+0x8/0x150) >>> [ 2.268963] [<c041c210>] (kernel_init+0x8/0x150) from [<c000dc40>] >>> (ret_from_fork+0x18/0x38) >>> [ 2.282034] ---[ end trace 6e968ac9df7b1cbe ]--- >>> [ 2.291589] dwc_otg: FIQ enabled >>> _______________________________________________ >>> Xenomai mailing list >>> [email protected] >>> http://www.xenomai.org/mailman/listinfo/xenomai >>> >> >> > _______________________________________________ Xenomai mailing list [email protected] http://www.xenomai.org/mailman/listinfo/xenomai
