On 22 December 2012 08:52, kasi viswanathan kasi.acorn@gmail.com wrote:
[ 0.001098] Calibrating delay loop... [ 0.007904] BUG: spinlock bad magic on CPU#0, swapper/0/0 [ 0.007965] lock: atomic64_lock+0xc0/0x400, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 [ 0.008026] [<c001ccfc>] (unwind_backtrace+0x0/0xf4) from [<c02eba20>] (do_raw_spin_lock+0x1b8/0x1f8) [ 0.008087] [<c02eba20>] (do_raw_spin_lock+0x1b8/0x1f8) from [<c0521a6c>] (_raw_spin_lock_irqsave+0x4c/0x58) [ 0.008117] [<c0521a6c>] (_raw_spin_lock_irqsave+0x4c/0x58) from [<c02f715c>] (atomic64_read+0x28/0x48) [ 0.008148] [<c02f715c>] (atomic64_read+0x28/0x48) from [<c007e1c0>] (update_cfs_rq_blocked_load+0x54/0x11c) [ 0.008148] [<c007e1c0>] (update_cfs_rq_blocked_load+0x54/0x11c) from [<c007e50c>] (task_tick_fair+0x284/0x8b0) [ 0.008209] [<c007e50c>] (task_tick_fair+0x284/0x8b0) from [<c007b0dc>] (scheduler_tick+0xd8/0x140) [ 0.008239] [<c007b0dc>] (scheduler_tick+0xd8/0x140) from [<c0056134>] (update_process_times+0x58/0x68) [ 0.008270] [<c0056134>] (update_process_times+0x58/0x68) from [<c0093910>] (tick_periodic+0x48/0xc4) [ 0.008300] [<c0093910>] (tick_periodic+0x48/0xc4) from [<c00939b0>] (tick_handle_periodic+0x24/0x98) [ 0.008331] [<c00939b0>] (tick_handle_periodic+0x24/0x98) from [<c002a104>] (omap2_gp_timer_interrupt+0x24/0x34) [ 0.008361] [<c002a104>] (omap2_gp_timer_interrupt+0x24/0x34) from [<c00acafc>] (handle_irq_event_percpu+0x64/0x244) [ 0.008392] [<c00acafc>] (handle_irq_event_percpu+0x64/0x244) from [<c00acd18>] (handle_irq_event+0x3c/0x5c) [ 0.008422] [<c00acd18>] (handle_irq_event+0x3c/0x5c) from [<c00af8f4>] (handle_fasteoi_irq+0x98/0x13c) [ 0.008422] [<c00af8f4>] (handle_fasteoi_irq+0x98/0x13c) from [<c00aca88>] (generic_handle_irq+0x28/0x30) [ 0.008483] [<c00aca88>] (generic_handle_irq+0x28/0x30) from [<c00154e0>] (handle_IRQ+0x4c/0xac) [ 0.008514] [<c00154e0>] (handle_IRQ+0x4c/0xac) from [<c00084c4>] (gic_handle_irq+0x2c/0x60) [ 0.008544] [<c00084c4>] (gic_handle_irq+0x2c/0x60) from [<c0522364>] (__irq_svc+0x44/0x5c) [ 0.008544] Exception stack(0xc0761f20 to 0xc0761f68) [ 0.008575] 1f20: 0000001a 00000001 c07620c0 ffff6a00 00000000 00000000 c07ebe8c c07620c0 [ 0.008575] 1f40: ffff6a00 c07620c0 00000000 00000000 00000001 c0761f68 c051ab3c c051ab50 [ 0.008575] 1f60: 60000153 ffffffff [ 0.008636] [<c0522364>] (__irq_svc+0x44/0x5c) from [<c051ab50>] (calibrate_delay+0x3a8/0x550) [ 0.008666] [<c051ab50>] (calibrate_delay+0x3a8/0x550) from [<c070e6cc>] (start_kernel+0x268/0x2fc) [ 0.008697] [<c070e6cc>] (start_kernel+0x268/0x2fc) from [<80008078>] (0x80008078) [ 0.101379] 2007.19 BogoMIPS (lpj=7839744)
The problem was reported here https://lkml.org/lkml/2012/11/26/186 And a patch came in recently https://lkml.org/lkml/2012/12/20/56