Date: Sun, 3 Jun 2018 00:04:50 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: bob prohaska <fbsd@www.zefox.net>, freebsd-arm@freebsd.org Subject: Re: panic: Assertion td->td_lock == TDQ_LOCKPTR(tdq) failed at /usr/src/sys/kern/sched_ule.c:2137 Message-ID: <20180602210450.GK3789@kib.kiev.ua> In-Reply-To: <CANCZdfpJ7hL_dnJd5kyMkhdT21LnXWxch7ztmN%2BrTk90F53WjQ@mail.gmail.com> References: <op.zjvyeypwkndu52@klop.ws> <20180601154153.GA62632@www.zefox.net> <20180602091606.63a1ab37.freebsd.ed.lists@sumeritec.com> <20180602150549.GA68197@www.zefox.net> <CANCZdfq%2BFp6=NDSQB0G9z1L7StcueupzvUiuNs9L-TgTQL=wzA@mail.gmail.com> <20180602193255.GA68908@www.zefox.net> <CANCZdfpJ7hL_dnJd5kyMkhdT21LnXWxch7ztmN%2BrTk90F53WjQ@mail.gmail.com>
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On Sat, Jun 02, 2018 at 02:39:00PM -0600, Warner Losh wrote: > On Sat, Jun 2, 2018, 1:32 PM bob prohaska <fbsd@www.zefox.net> wrote: > > > On Sat, Jun 02, 2018 at 09:14:18AM -0600, Warner Losh wrote: > > > > > > Do you have r334508? It fixes the OOM falsely triggering. > > > > > At the moment sources are at 334456, world and kernel are at > > 334276. > > > > Might it be feasible to stop the present buildworld, update > > sources and then try to build a new kernel before building > > world? > > > > That's recent enough that you should be fine. There might be an lld vs > binutils ld issue. There was on i386 recently, but I think it was i386 > specific. It's a good risk. This happens on arm64 ? In fact, try this. I did not even compiled the change. diff --git a/sys/arm64/arm64/swtch.S b/sys/arm64/arm64/swtch.S index c9843303b1d..4c2c3aca583 100644 --- a/sys/arm64/arm64/swtch.S +++ b/sys/arm64/arm64/swtch.S @@ -165,10 +165,9 @@ ENTRY(cpu_switch) mov x0, x19 /* - * Release the old thread. This doesn't need to be a store-release - * as the above dsb instruction will provide release semantics. + * Release the old thread. */ - str x2, [x0, #TD_LOCK] + stlr x2, [x0, #TD_LOCK] #if defined(SCHED_ULE) && defined(SMP) /* Spin if TD_LOCK points to a blocked_lock */ ldr x2, =_C_LABEL(blocked_lock)
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