debugging - 【SLOVED】Fatal exception in interrupt when booting Linux 3.3.7 on BeagleBoard -


i have tried implement new scheduling algorithm in linux kernel 3.3.7 , boot on beagleboard. however, throws errors "kernel panic - not syncing: fatal exception in interrupt". have enabled low level debugs functions , debug infos follows:

[    0.000000] ------------[ cut here ]------------ [    0.000000] warning: @ kernel/lockdep.c:2592 do_vfp+0x8/0x20() [    0.000000] modules linked in: [    0.000000] [<c001c2ec>] (unwind_backtrace+0x0/0x130) [<c0045afc>] (warn_slow) [    0.000000] [<c0045afc>] (warn_slowpath_common+0x4c/0x64) [<c0045b30>] (warn_) [    0.000000] [<c0045b30>] (warn_slowpath_null+0x1c/0x24) [<c000f328>] (do_vfp+) [    0.000000] ---[ end trace 1b75b31a2719ed1c ]--- [    0.000000] error before arm_notify_die- gdem-upm  [    0.000000] internal error: oops - undefined instruction: 0 [#1] smp [    0.000000] modules linked in: [    0.000000] cpu: 0    tainted: g        w     (3.3.0-rc7-00008-g8bd3d32-dirty #5) [    0.000000] pc @ update_curr+0x4/0x5d0 [    0.000000] lr @ task_tick_fair+0x3c/0x154 [    0.000000] pc : [<c0079ac0>]    lr : [<c007a274>]    psr: 800001d3 [    0.000000] sp : c0699e2c  ip : c0698000  fp : c0699ea4 [    0.000000] r10: 00000000  r9 : c0723748  r8 : 00000000 [    0.000000] r7 : 00000000  r6 : c06b4630  r5 : c0e083e8  r4 : c0e08380 [    0.000000] r3 : c007a238  r2 : c06b2108  r1 : c06b4668  r0 : c0e083e8 [    0.000000] flags: nzcv  irqs off  fiqs off  mode svc_32  isa arm  segment kernel [    0.000000] control: 10c5387d  table: 80004019  dac: 00000017 [    0.000000] process swapper/0 (pid: 0, stack limit = 0xc06982f8) [    0.000000] stack: (0xc0699e2c 0xc069a000) [    0.000000] 9e20:                            c0e08380 c0e083e8 c06b4630 00000000 00 [    0.000000] 9e40: c0723748 00000000 c0699ea4 c007a274 00000002 c06b4630 00000000 00 [    0.000000] 9e60: c0723748 c06b4668 600001d3 c0e08380 00000000 c06b4630 00000000 00 [    0.000000] 9e80: c0723748 00000000 c0699ea4 c00755f0 c0698000 c06b4630 00000000 00 [    0.000000] 9ea0: c072375c c0055288 00000000 00000000 c069a144 00000000 00000000 c0 [    0.000000] 9ec0: c06b7bc0 c069e954 c06b7b40 c002713c 00000000 c008b084 00000000 cc [    0.000000] 9ee0: 00000000 c06b7bc0 c069e954 0000005f c002713c 00000000 00000000 c0 [    0.000000] 9f00: 00000000 c00a449c 411fc083 00000000 600001d3 c069e900 c069e954 c0 [    0.000000] 9f20: c069e954 c06b7bc0 0000005f 00000000 411fc083 00000000 00000000 c8 [    0.000000] 9f40: c069e900 c069e954 00000001 c00a6b9c c06b2108 c06960e0 c0698000 c0 [    0.000000] 9f60: 000001da c00155f8 fa200000 c0699f90 ffffffff c0699fc4 80004059 cc [    0.000000] 9f80: c06b4630 c06486d4 20000153 c0483e24 00000000 00000001 01ffffff c4 [    0.000000] 9fa0: 600001d3 c067925c c0e03980 c06b5e14 80004059 411fc083 00000000 00 [    0.000000] 9fc0: 00000001 c0699fd8 00000001 c06486d4 20000153 ffffffff c06481c4 00 [    0.000000] 9fe0: 00000000 c067925c 10c53c7d c06b0cc0 c067922c 80008044 00000000 00 [    0.000000] unwind: unhandled instruction c9 [    0.000000] code: c0491260 c0491264 c04911b4 e92d4ff0 (ed2d8b02)  [    0.000000] ---[ end trace 1b75b31a2719ed1d ]--- [    0.000000] kernel panic - not syncing: fatal exception in interrupt` 

any idea comes error? there debug tool(maybe kgdb) can used debug kernel before booted?

thx!


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