On Sun, 14 May 2017 01:01:02 +0530 "Naveen N. Rao" <naveen.n....@linux.vnet.ibm.com> wrote:
> If instance directories are deleted while there are registered function > triggers: > > # cd /sys/kernel/debug/tracing/instances > # mkdir test > # echo "schedule:enable_event:sched:sched_switch" > test/set_ftrace_filter > # rmdir test > Unable to handle kernel paging request for data at address 0x00000008 > Unable to handle kernel paging request for data at address 0x00000008 > Faulting instruction address: 0xc0000000021edde8 > Oops: Kernel access of bad area, sig: 11 [#1] > SMP NR_CPUS=2048 > NUMA > pSeries Looks like this patch needs to be marked for stable, and go in right away. I may also do the same for the ftracetest bashism patch with Masami's approval. I may also slip in the ftracetest for the bug that this patch fixes. The first patch can go into the queue for 4.13. -- Steve
