On 2023-07-26 08:10:45 [+0200], Mike Galbraith wrote: > > [ 52.848925] BUG: scheduling while atomic: perf/6549/0x00000002 > > Had bf9ad37dc8a not been reverted due to insufficient beauty, you could > trivially make the sigtrap test a happy camper (wart tested in tip-rt). Thank you for the pointer Mike. I guess we need this preempt_disable_notrace() in perf_pending_task() due to context accounting in get_recursion_context(). Would a migrate_disable() be sufficient or could we send the signal outside of the preempt-disabled block? This is also used in perf_pending_irq() and on PREEMPT_RT this is invoked from softirq context which is preemptible. Sebastian
