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charset=UTF-8 Content-Transfer-Encoding: 7bit On 2/7/24 12:19 AM, Guangwu Zhang wrote: > HI, > Found the kernel issue with linux-block/for-next branch. > kernel repo https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git > > Reproducer : > 1. offline_online_cpu_in_bg > 2. some_io_in_bg I don't know what these two things are. Would be nice with an actual reproducer. I can trivially write something that offline and onlines CPU in the background, and I did, but I cannot reproduce this issue. Ditto on "some_io_in_bg", what does that mean?? -- Jens Axboe