Date: Thu, 20 Jan 2022 04:34:14 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 261338] [PATCH] kernel panic "bad pte" under heavy CPU load on 12.2 and 12.3 (i386) Message-ID: <bug-261338-227-hGjIH5rqeb@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-261338-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261338 --- Comment #5 from Dmitry K. <thedix@yandex.ru> --- smp_targeted_tlb_shootdown() is invoked in smp_masked_invl*() and smp_cache_flush(). As I can see smp_masked_invl*() are invoked with correct sched_pin() / sched_unpin() order in pmap_*(). But smp_cache_flush() is invoked by pmap_invalidate_cache(), which is called in multiple places in pmap_*(). Some functions do not have outer sched_pin() / sched_unpin() guarding when calling pmap_invalidate_cache(), for example, in pmap_flush_page(). And it leads to the wrong order of pins in smp_targeted_tlb_shootdown(). So I would suggest to call sched_pin() / sched_unpin() explicitly in smp_targeted_tlb_shootdown() to make sure (as it was in the previous version). -- You are receiving this mail because: You are the assignee for the bug.home | help
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