Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH 0/2] powerpc: stack protector (-fstack-protector) support | Date | Thu, 17 Nov 2016 22:27:24 +1100 |
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Denis Kirjanov <kda@linux-powerpc.org> writes:
> On Friday, September 30, 2016, Christophe Leroy <christophe.leroy@c-s.fr> > wrote: > >> Add HAVE_CC_STACKPROTECTOR to powerpc. This is copied from ARM. >> >> Not tested on PPC64, compile ok with ppc64_ > > > Hi Christophe, > > are you going to test it on ppc64? If not, I can take it
Did you get around to testing it?
It seems to be working here:
root@mpe-ubuntu-le:/sys/kernel/debug/provoke-crash# echo CORRUPT_STACK > DIRECT Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: c000000000671ed8 CPU: 1 PID: 3835 Comm: bash Not tainted 4.9.0-rc5-compiler_gcc-6.2.0-00075-gf41db6c7a3c8-dirty #464 Call Trace: [c0000000dbf73a30] [c000000000541728] dump_stack+0xb8/0x100 (unreliable) [c0000000dbf73a70] [c000000000219ba8] panic+0x14c/0x320 [c0000000dbf73b10] [c0000000000c27ec] __stack_chk_fail+0x2c/0x30 [c0000000dbf73b70] [c000000000671ed8] lkdtm_CORRUPT_STACK+0x88/0x90 [c0000000dbf73bf0] [6161616161616161] 0x6161616161616161 Rebooting in 10 seconds..
cheers
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