Date: Tue, 7 Aug 2018 00:36:48 +0300 From: Vladimir Kondratyev <vladimir@kondratyev.su> To: Konstantin Belousov <kostikbel@gmail.com> Cc: Johannes Lundberg <johalun0@gmail.com>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: Linux process causes kernel panic Message-ID: <1372b1e2-fc10-9066-0cce-9ef55416549b@kondratyev.su> In-Reply-To: <20180806204148.GB6049@kib.kiev.ua> References: <CAECmPwvAaSTimVyV1n%2B9PNKd_0JP6kLXnXyihoWEB3FHRHqa9w@mail.gmail.com> <20180803204250.GE6049@kib.kiev.ua> <CAECmPwt0kifzPFpgyYWJj7UvnUn2CGjUfQz2tuS5G0BYttTkZQ@mail.gmail.com> <20180804142235.GM6049@kib.kiev.ua> <CAECmPwu9eqH2UJo0LMNDj7nPXu7S1%2B9OWnd1swAabZLXcxo1Dg@mail.gmail.com> <5856e8a6-84a4-6fb4-c2d4-ecd56c5c5a94@kondratyev.su> <20180806203738.GA6049@kib.kiev.ua> <20180806204148.GB6049@kib.kiev.ua>
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On 8/6/18 11:41 PM, Konstantin Belousov wrote: >>> linux_sys_futex(0x33b0fac,0x85,0x1,0x1,0x33b0fa8,0x4000001) >>> -- here it stops -- >> Can you fix your mail client ? Unfortunately, it did all that dumb wraps at send time not at edit. Sorry. >>> ddb also shows that process is looping somewhere inside linux_sys_futex() >> There are two bugs. One is that ifuncs handling for relocations against >> local symbols in elf obj modules was missed. Patch below fixed it for me. >> >> Second bug is that futexes seems to not handle accesses to the CoW >> mappings which are not yet copied. I think that the second bug is >> irrelevant for your case, since it worked before. >> >> Try this patch in addition to the linux/ patches I sent before. It fixed skype for me too! Thank you!
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