----- Ursprüngliche Mail ----- > Von: "Petr Tesarik" <petrtesa...@huaweicloud.com> > An: "richard" <rich...@nod.at>, "anton ivanov" > <anton.iva...@cambridgegreys.com>, "Johannes Berg" > <johan...@sipsolutions.net>, "linux-um" <linux-um@lists.infradead.org>, > "linux-kernel" <linux-ker...@vger.kernel.org> > CC: "Roberto Sassu" <roberto.sa...@huaweicloud.com>, p...@tesarici.cz, "Petr > Tesarik" > <petr.tesar...@huawei-partners.com> > Gesendet: Freitag, 15. Dezember 2023 13:14:29 > Betreff: [PATCH 0/2] um: improve UML page fault handling
> From: Petr Tesarik <petr.tesar...@huawei-partners.com> > > Improve UML handling of segmentation faults in kernel mode. Although > such page faults are generally caused by a kernel bug, it is annoying > if they cause an infinite loop, or panic the kernel. More importantly, > a robust implementation allows to write KUnit tests for various guard > pages, preventing potential kernel self-protection regressions. > > Petr Tesarik (2): > um: do not panic on kernel mode faults > um: oops on accessing an non-present page in the vmalloc area I think this is a good thing to have. For the implementation side, this needs to use the oops_* helpers from kernel/panic.c and taint the kernel, etc... See arch/x86/kernel/dumpstack.c die() and friends. Thanks, //richard
