Hi Frederic,
FYI,
On Tue, 12 Nov 2019 at 22:38, Naresh Kamboju naresh.kamboju@linaro.org wrote:
INFO: rcu_sched self-detected stall on CPU detected on Linux next 5.4.0-rc7-next-20191112 running on x86_64 device and continuously popped up kernel.
Steps to reproduce:
- boot x86_64 with Linux next 5.4.0-rc7-next-20191112
- Run "perf test -v"
x86_64 device: Running perf test cases perf test -v ... test child forked, pid 418 mmap size 528384B [ 74.040659] rcu: INFO: rcu_sched self-detected stall on CPU [ 74.046275] rcu: 0-....: (26000 ticks this GP) idle=25a/1/0x4000000000000002 softirq=7882/7882 fqs=6495
[ 74.151951] RIP: 0010:irq_work_sync+0x51/0x60
Thanks for providing fix patch. [PATCH] irq_work: Fix IRQ_WORK_BUZY bit clearing
Applied this patch and tested perf test on x86_64 and reported issue is gone.
ref: https://lore.kernel.org/lkml/20191113171201.14032-1-frederic@kernel.org/T/#u
- Naresh