Re: [PATCH 2/3 v3] x86: entry_64.S: always allocate complete "struct pt_regs"
From: Denys Vlasenko
Date: Wed Feb 25 2015 - 08:56:10 EST
On 02/25/2015 01:37 PM, Andrey Wagin wrote:
> 2015-02-13 0:54 GMT+03:00 Denys Vlasenko <dvlasenk@xxxxxxxxxx>:
> My test vm doesn't boot with this patch. Could you help to investigate
> this issue?
Hi Andrey, thanks for testing!
> I have attached a kernel config and console log.
Looking at the logs, it seems that regular syscalls do work:
systemd managed to function for some time, even spawned
a few children.
It might be that the bug is somewhere in signal delivery code.
This would explain why oops got delayed.
I am trying to reproduce it. My gcc seems to be a bit old -
it can't digest CONFIG_CC_STACKPROTECTOR_STRONG=y in your .config.
I switched to using "only" CONFIG_CC_STACKPROTECTOR_REGULAR=y:
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
CONFIG_CC_STACKPROTECTOR_REGULAR=y
# CONFIG_CC_STACKPROTECTOR_STRONG is not set
and resulting kernel works for me.
Can you send me your bzImage (off-list, of course)?
I'll send you my qemu test setup, can you check whether crash
is happening for you when you run your kernel in it?
--
vda
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/