Re: [BUG] linux-next: Tree for April 9 warning on CC_STACKPROTECTOR,followed by kernel panic

From: Jacek Luczak
Date: Thu Apr 10 2008 - 06:18:18 EST


Kamalesh Babulal pisze:
Hi Stephen,

The next-20080409 kernel warns while booting up on a x86_64 machine.
When compiled the kernel with CONFIG_CC_STACKPROTECTOR=y, the warning
is followed by the kernel panic.

Testing -fstack-protector-all feature
No -fstack-protector-stack-frame!
-fstack-protector-all test failed
------------[ cut here ]------------
WARNING: at kernel/panic.c:365 __stack_chk_test+0x4b/0x50()
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.25-rc8-next-20080409-autotest #1

Call Trace:
[<ffffffff80231f5e>] warn_on_slowpath+0x51/0x63
[<ffffffff80232d93>] printk+0x4e/0x56
[<ffffffff80382fcd>] extract_entropy+0x47/0x90
[<ffffffff80230000>] dup_mm+0xca/0x3fd
[<ffffffff80231eba>] __stack_chk_test_func+0x21/0x32
[<ffffffff80231fbb>] __stack_chk_test+0x4b/0x50
[<ffffffff808ba8f1>] kernel_init+0x189/0x2f9
[<ffffffff804ee221>] _spin_unlock_irq+0x9/0xc
[<ffffffff8020cb88>] child_rip+0xa/0x12
[<ffffffff808ba768>] kernel_init+0x0/0x2f9
[<ffffffff8020cb7e>] child_rip+0x0/0x12

---[ end trace d88d2f3a71e3b32c ]---

Hi,

what version of GCC are you using?

-Jacek
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