On 14.04.2014 21:24, Stanislav Meduna wrote: > hunting another problem with AUART acting weirdly I got okay, the AUART thing was some device tree snafu, but I have seen the BUG a few times (but not readily reproducible). This thread looks remotely similar https://lkml.org/lkml/2013/9/27/534 - looks like the real bug happened somewhere else :( Any hints on how to get more info? Adding Cc: to linux-arm and linux-kernel > BUG: spinlock trylock failure on UP on CPU#0, ksoftirqd/0/3 > lock: boot_tvec_bases+0x0/0x10a0, .magic: dead4ead, .owner: ksoftirqd/0/3, .owner_cpu: 0 > CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 3.12.15-rt25-00371-gfec62f5-dirty #26 > [<c00149ec>] (unwind_backtrace+0x0/0xf4) from [<c0012ab0>] (show_stack+0x10/0x14) > [<c0012ab0>] (show_stack+0x10/0x14) from [<c01a4b80>] (do_raw_spin_trylock+0x4c/0x58) > [<c01a4b80>] (do_raw_spin_trylock+0x4c/0x58) from [<c02ca0b4>] (_raw_spin_trylock+0x20/0x98) > [<c02ca0b4>] (_raw_spin_trylock+0x20/0x98) from [<c02c9654>] (rt_spin_trylock+0x14/0xd0) > [<c02c9654>] (rt_spin_trylock+0x14/0xd0) from [<c00285cc>] (run_local_timers+0x24/0x78) > [<c00285cc>] (run_local_timers+0x24/0x78) from [<c0028654>] (update_process_times+0x34/0x68) > [<c0028654>] (update_process_times+0x34/0x68) from [<c005f0ac>] (tick_sched_timer+0x58/0x22c) > [<c005f0ac>] (tick_sched_timer+0x58/0x22c) from [<c003f2f8>] (__run_hrtimer+0x7c/0x2a8) > [<c003f2f8>] (__run_hrtimer+0x7c/0x2a8) from [<c003f684>] (hrtimer_interrupt+0x104/0x30c) > [<c003f684>] (hrtimer_interrupt+0x104/0x30c) from [<c0230a84>] (mxs_timer_interrupt+0x20/0x2c) > [<c0230a84>] (mxs_timer_interrupt+0x20/0x2c) from [<c0051d1c>] (handle_irq_event_percpu+0x80/0x2f8) > [<c0051d1c>] (handle_irq_event_percpu+0x80/0x2f8) from [<c0051fd0>] (handle_irq_event+0x3c/0x5c) > [<c0051fd0>] (handle_irq_event+0x3c/0x5c) from [<c0054778>] (handle_level_irq+0x8c/0x118) > [<c0054778>] (handle_level_irq+0x8c/0x118) from [<c0051c8c>] (generic_handle_irq+0x28/0x30) > [<c0051c8c>] (generic_handle_irq+0x28/0x30) from [<c001009c>] (handle_IRQ+0x30/0x84) > [<c001009c>] (handle_IRQ+0x30/0x84) from [<c0013324>] (__irq_svc+0x44/0x88) > [<c0013324>] (__irq_svc+0x44/0x88) from [<c006a664>] (__try_to_take_rt_mutex+0x4/0x144) > [<c006a664>] (__try_to_take_rt_mutex+0x4/0x144) from [<00000000>] ( (null)) > > > Linux nxt 3.12.15-rt25-00371-gfec62f5-dirty #26 PREEMPT RT Mon Apr 14 20:40:56 CEST 2014 armv5tejl GNU/Linux > > This is on a Freescale i.MX28, 3.12.15-rt25 with patches that do not touch > anything related. -- Stano -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
