Messages in this thread | | | Subject | Re: [PATCH v2] sample-trace-array: Fix sleeping function called from invalid context | From | Kefeng Wang <> | Date | Wed, 10 Jun 2020 09:07:32 +0800 |
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On 2020/6/10 0:29, Divya Indi wrote: > On 6/9/20 6:51 AM, Kefeng Wang wrote: >> BUG: sleeping function called from invalid context at kernel/locking/mutex.c:935 >> in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/5 >> 1 lock held by swapper/5/0: >> #0: ffff80001002bd90 (samples/ftrace/sample-trace-array.c:38){+.-.}-{0:0}, at: call_timer_fn+0x8/0x3e0 >> CPU: 5 PID: 0 Comm: swapper/5 Not tainted 5.7.0+ #8 >> Hardware name: QEMU QEMU Virtual Machine, BIOS 0.0.0 02/06/2015 >> Call trace: >> dump_backtrace+0x0/0x1a0 >> show_stack+0x20/0x30 >> dump_stack+0xe4/0x150 >> ___might_sleep+0x160/0x200 >> __might_sleep+0x58/0x90 >> __mutex_lock+0x64/0x948 >> mutex_lock_nested+0x3c/0x58 >> __ftrace_set_clr_event+0x44/0x88 >> trace_array_set_clr_event+0x24/0x38 >> mytimer_handler+0x34/0x40 [sample_trace_array] >> >> mutex_lock() will be called in interrupt context, using workqueue to fix it. > Fixes: Missing it, will send v3, thanks. >> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> > Reviewed-by: Divya Indi <divya.indi@oracle.com> > >
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