kernel panic on VIA C3 Samuel2
Hello,
a root fs built with buildroot-2013.05-rc2 and defconfig BR2_x86_c3=y BR2_TOOLCHAIN_EXTERNAL=y, terminates booting with a kernel panic at init start, when run on a VIA EPIA PD board with Eden 600+256MB. The same root fs works fine on qemu and on a netbook (atom n570+1GB). This happens with different types of linux kernels and different boot loaders.
The problem disappears changing the busybox of buildroot with a statically linked one.
What is wrong with the VIA board? Any suggestion is appreciated, thank you in advance.
F. Pollastri
Hello,
Quoted 6 lines · On Mon, 27 May 2013 12:33:51 +0200, area234 at gmail.com wrote:
a root fs built with buildroot-2013.05-rc2 and defconfig BR2_x86_c3=y BR2_TOOLCHAIN_EXTERNAL=y, terminates booting with a kernel panic at init start, when run on a VIA EPIA PD board with Eden 600+256MB. The same root fs works fine on qemu and on a netbook (atom n570+1GB). This happens with different types of linux kernels and different boot loaders.
The base library configuration for the CodeSourcery x86 toolchain is Intel Pentium 4. I am not sure the VIA C3 implements the Pentium 4 instruction set, I am not very familiar with those x86 clones.
Quoted 2 lines
The problem disappears changing the busybox of buildroot with a statically linked one.
Hum, this is interesting. Maybe when it's statically linked you don't hit the problematic code paths?
Can you paste the complete panic message, so we can have a look?
Quoted 2 lines
What is wrong with the VIA board? Any suggestion is appreciated, thank you in advance.
Probably nothing is wrong with the VIA board, most likely with the toolchain configuration.
Can you try BR2_x86_c3=y, dynamic linking, with the Buildroot internal toolchain?
Thanks,
Thomas
Signature · 4 lines
Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com
Quoted 14 lines · Thomas Petazzoni
Hello,
Quoted 6 lines · On Mon, 27 May 2013 12:33:51 +0200, area234 at gmail.com wrote:
a root fs built with buildroot-2013.05-rc2 and defconfig BR2_x86_c3=y BR2_TOOLCHAIN_EXTERNAL=y, terminates booting with a kernel panic at init start, when run on a VIA EPIA PD board with Eden 600+256MB. The same root fs works fine on qemu and on a netbook (atom n570+1GB). This happens with different types of linux kernels and different boot loaders.
The base library configuration for the CodeSourcery x86 toolchain is Intel Pentium 4. I am not sure the VIA C3 implements the Pentium 4 instruction set, I am not very familiar with those x86 clones.
Quoted 6 lines
Quoted 2 lines
The problem disappears changing the busybox of buildroot with a statically linked one.
Hum, this is interesting. Maybe when it's statically linked you don't hit the problematic code paths?
Can you paste the complete panic message, so we can have a look?
Here it is. The root fs is built with the buildroot internal toolchain.
...
rtc_cmos 00:05: setting system clock to 2013-05-28 18:00:11 UTC (1369764011)
Freeing unused kernel memory: 364k freed
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004
Pid: 1, comm: init Not tainted 3.6.11-mmx #1
Call Trace:
[<c0697b7a>] ? panic+0x7b/0x153
[<c04271ef>] ? do_exit+0x2ac/0x64d
[<c0427790>] ? do_group_exit+0x56/0x83
[<c042e9db>] ? get_signal_to_deliver+0x461/0x478
[<c04027e3>] ? do_bounds+0x4b/0x4b
[<c0401c7a>] ? do_signal+0x1d/0x5d5
[<c042dd55>] ? force_sig_info+0x8c/0x96
[<c04027e3>] ? do_bounds+0x4b/0x4b
[<c041dec1>] ? do_page_fault+0x328/0x363
[<c041de92>] ? do_page_fault+0x2f9/0x363
[<c041dec1>] ? do_page_fault+0x328/0x363
[<c041de92>] ? do_page_fault+0x2f9/0x363
[<c040818d>] ? sys_execve+0x4b/0x53
[<c069dcaf>] ? work_notifysig+0x24/0x35
[<c04027e3>] ? do_bounds+0x4b/0x4b
[<c04023ac>] ? do_notify_resume+0x30/0x64
[<c069dcaf>] ? work_notifysig+0x24/0x35
[<c04027e3>] ? do_bounds+0x4b/0x4b
Quoted 8 lines
Quoted 3 lines
What is wrong with the VIA board? Any suggestion is appreciated, thank you in advance.
Probably nothing is wrong with the VIA board, most likely with the toolchain configuration.
Can you try BR2_x86_c3=y, dynamic linking, with the Buildroot internal toolchain?
I tried, but there is no change, the same kernel panic on EPIA board.
Quoted 4 lines
Thanks,
Thomas
Thanks again,
Fabrizio