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Message-ID: <2afd7ac7-126d-06a8-802c-9b5bd7d6259a@synopsys.com> Date: Tue, 12 Dec 2017 10:02:51 -0800 From: Vineet Gupta <Vineet.Gupta1@...opsys.com> To: Sudip Mukherjee <sudipm.mukherjee@...il.com>, Andrew Morton <akpm@...ux-foundation.org> CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Vineet Gupta" <Vineet.Gupta1@...opsys.com>, Alexey Brodkin <Alexey.Brodkin@...opsys.com> Subject: Re: [PATCH] arch: define weak abort On 12/11/2017 01:26 PM, Sudip Mukherjee wrote: > gcc was generating abort due to 'divide by zero' and if it is not > defined in the toolchain the build fails. > > Currently 'frv' and 'arc' are failing. Previously other arch was also > broken like m32r was fixed by d22e3d69ee1a ("m32r: fix build failure"). > > Lets define this weak function which is common for all arch and fix the > problem permanently. We can even remove the arch specific 'abort' after > this is done. Can you add some more details about the rootcause - see the corresponding ARC patch which I added before you add this generic one http://lists.infradead.org/pipermail/linux-snps-arc/2017-December/003074.html -Vineet > > Cc: Alexey Brodkin <Alexey.Brodkin@...opsys.com> > Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@...il.com> > --- > kernel/exit.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/kernel/exit.c b/kernel/exit.c > index af6c245..90c6869 100644 > --- a/kernel/exit.c > +++ b/kernel/exit.c > @@ -1759,3 +1759,11 @@ long kernel_wait4(pid_t upid, int __user *stat_addr, int options, > return -EFAULT; > } > #endif > + > +__weak void abort(void) > +{ > + BUG(); > + > + /* if that doesn't kill us, halt */ > + panic("Oops failed to kill thread"); > +}
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