Re: [PATCH 4/5] powerpc/jprobes: Disable preemption when triggered through ftrace

2017-09-14 Thread Masami Hiramatsu
On Thu, 14 Sep 2017 15:55:39 +0530 "Naveen N. Rao" wrote: > On 2017/09/13 05:05PM, Masami Hiramatsu wrote: > > On Thu, 14 Sep 2017 02:50:35 +0530 > > "Naveen N. Rao" wrote: > > > > > KPROBES_SANITY_TEST throws the below splat when CONFIG_PREEMPT is > > > enabled: > > > > > > [3.140410] Kpr

Re: [PATCH 4/5] powerpc/jprobes: Disable preemption when triggered through ftrace

2017-09-14 Thread Naveen N. Rao
On 2017/09/13 05:05PM, Masami Hiramatsu wrote: > On Thu, 14 Sep 2017 02:50:35 +0530 > "Naveen N. Rao" wrote: > > > KPROBES_SANITY_TEST throws the below splat when CONFIG_PREEMPT is > > enabled: > > > > [3.140410] Kprobe smoke test: started > > [3.149680] DEBUG_LOCKS_WARN_ON(val > preempt

Re: [PATCH 4/5] powerpc/jprobes: Disable preemption when triggered through ftrace

2017-09-13 Thread Masami Hiramatsu
On Thu, 14 Sep 2017 02:50:35 +0530 "Naveen N. Rao" wrote: > KPROBES_SANITY_TEST throws the below splat when CONFIG_PREEMPT is > enabled: > > [3.140410] Kprobe smoke test: started > [3.149680] DEBUG_LOCKS_WARN_ON(val > preempt_count()) > [3.149684] [ cut here ]

[PATCH 4/5] powerpc/jprobes: Disable preemption when triggered through ftrace

2017-09-13 Thread Naveen N. Rao
KPROBES_SANITY_TEST throws the below splat when CONFIG_PREEMPT is enabled: [3.140410] Kprobe smoke test: started [3.149680] DEBUG_LOCKS_WARN_ON(val > preempt_count()) [3.149684] [ cut here ] [3.149695] WARNING: CPU: 19 PID: 1 at kernel/sched/core.c:3094 pre