boot option: root=/dev/mtdblock1 rootfstype=ext3 rw console=ttyS0,115200 mtdparts=phys_mapped_flash:1024k(bootloader)ro,256k(product_info),256k(system_para),128k(exception_info),128k(bootloader_env),-(reserve);gen_nand.0:128M(root),-(usr) boot logs: Using octmgmt0 device TFTP from server 10.10.10.5; our IP address is 10.10.10.7 Filename 'vmlinux.64'. Load address: 0x20000000 Loading: T ################################# done Bytes transferred = 4720693 (480835 hex), 413 Kbytes/sec argv[2]: root=/dev/mtdblock1 argv[3]: rootfstype=ext3 argv[4]: rw argv[5]: console=ttyS0,115200 argv[6]: mtdparts=phys_mapped_flash:1024k(bootloader)ro,256k(product_info),256k(system_para),128k(exception_info),128k(bootloader_env),-(reserve);gen_nand.0:128M(root),-(usr) ELF file is 64 bit Allocating memory for ELF segment: addr: 0xffffffff81100000 (adjusted to: 0x1100000), size 0x3bdd80 Allocated memory for ELF segment: addr: 0xffffffff81100000, size 0x3bdd80 Processing PHDR 0 Loading 390a80 bytes at ffffffff81100000 Clearing 2d300 bytes at ffffffff81490a80 ## Loading Linux kernel with entry point: 0xffffffff81105e90 ... Bootloader: Done loading app on coremask: 0x1 Linux version 2.6.32.13-dirty (root@ubuntu) (gcc version 4.3.3 (Cavium Networks Version: 2_0_0 build 95) ) #5 SMP PREEMPT Tue Jul 12 08:57:24 CST 2011 CVMSEG size: 2 cache lines (256 bytes) bootconsole [early0] enabled CPU revision is: 000d0409 (Cavium Octeon) Checking for the multiply/shift bug... no. Checking for the daddiu bug... no. Determined physical RAM map: memory: 000000000002c000 @ 0000000001465000 (usable) memory: 0000000006c00000 @ 0000000001500000 (usable) memory: 0000000007c00000 @ 0000000008200000 (usable) memory: 0000000011800000 @ 0000000020000000 (usable) Wasting 292376 bytes for tracking 5221 unused pages Zone PFN ranges: Normal 0x00001465 -> 0x00031800 Movable zone start PFN for each node early_node_map[4] active PFN ranges 0: 0x00001465 -> 0x00001491 0: 0x00001500 -> 0x00008100 0: 0x00008200 -> 0x0000fe00 0: 0x00020000 -> 0x00031800 PERCPU: Embedded 10 pages/cpu @a800000001f91000 s10880 r8192 d21888 u65536 pcpu-alloc: s10880 r8192 d21888 u65536 alloc=16*4096 pcpu-alloc: [0] 0 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 128415 Kernel command line: bootoctlinux 0x20000000 root=/dev/mtdblock1 rootfstype=ext3 rw console=ttyS0,115200 mtdparts=phys_mapped_flash:1024k(bootloader)ro,256k(product_info),256k(system_para),128k(exception_info),128k(bootloader_env),-(reserve);gen_nand.0:128M(root),-(usr) PID hash table entries: 2048 (order: 2, 16384 bytes) Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) Inode-cache hash table entries: 32768 (order: 6, 262144 bytes) Primary instruction cache 32kB, virtually tagged, 4 way, 64 sets, linesize 128 bytes. Primary data cache 16kB, 64-way, 2 sets, linesize 128 bytes. Memory: 512256k/524464k available (2615k kernel code, 11800k reserved, 856k data, 176k init, 0k highmem) Hierarchical RCU implementation. NR_IRQS:152 console [ttyS0] enabled, bootconsole disabled console [ttyS0] enabled, bootconsole disabled Calibrating delay using timer specific routine.. 1501.67 BogoMIPS (lpj=3003356) Security Framework initialized Mount-cache hash table entries: 256 Checking for the daddi bug... no. Brought up 1 CPUs NET: Registered protocol family 16 nand_init(): registering device resources bio: create slab <bio-0> at 0 Switching to clocksource OCTEON_CVMCOUNT NET: Registered protocol family 2 IP route cache hash table entries: 4096 (order: 3, 32768 bytes) TCP established hash table entries: 16384 (order: 6, 262144 bytes) TCP bind hash table entries: 16384 (order: 6, 262144 bytes) TCP: Hash tables configured (established 16384 bind 16384) TCP reno registered NET: Registered protocol family 1 RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. msgmni has been set to 1001 alg: No test for stdrng (krng) io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered (default) Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0x1180000000800 (irq = 58) is a OCTEON loop: module loaded nand id: 0xaddc NAND device: Manufacturer ID: 0xad, Chip ID: 0xdc (Hynix NAND 512MiB 3,3V 8-bit) Scanning device for bad blocks 2 cmdlinepart partitions found on MTD device gen_nand.0 nr_parts:2 Creating 2 MTD partitions on "gen_nand.0": 0x000000000000-0x000008000000 : "root" 0x000008000000-0x000020000000 : "usr" TCP cubic registered NET: Registered protocol family 17 Bootbus flash: Setting flash for 2MB flash at 0x1fa00000 phys_mapped_flash: Found 1 x16 devices at 0x0 in 8-bit bank Amd/Fujitsu Extended Query Table at 0x0040 number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. 6 cmdlinepart partitions found on MTD device phys_mapped_flash Creating 6 MTD partitions on "phys_mapped_flash": 0x000000000000-0x000000100000 : "bootloader" 0x000000100000-0x000000140000 : "product_info" 0x000000140000-0x000000180000 : "system_para" 0x000000180000-0x0000001a0000 : "exception_info" 0x0000001a0000-0x0000001c0000 : "bootloader_env" 0x0000001c0000-0x000000200000 : "reserve" EXT3-fs warning: maximal mount count reached, running e2fsck is recommended kjournald starting. Commit interval 5 seconds EXT3 FS on mtdblock1, internal journal EXT3-fs: recovery complete. EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) on device 31:1. Freeing unused kernel memory: 176k freed

Hi,

         I got a problem when trying to boot linux 2.6.32.13 on my Octeon CN5650 board.

Booting logs below:

...omit….

EXT3-fs warning: maximal mount count reached, running e2fsck is recommended

kjournald starting.  Commit interval 5 seconds

EXT3 FS on mtdblock1, internal journal

EXT3-fs: recovery complete.

EXT3-fs: mounted filesystem with ordered data mode.

VFS: Mounted root (ext3 filesystem) on device 31:1.

Freeing unused kernel memory: 176k freed

Kernel panic - not syncing: Attempted to kill init!     ß kernel panic here

What I do:

1、The busybox init is OK in another version kernel .I replace init with “Hello world” prog or dead loop prog, kernel panic still.

2、

run_init_process(“/sbin/init”) à kernel_execve à sys_execve

so I add some debug msgs in sys_execve.

asmlinkage int sys_execve(nabi_no_regargs struct pt_regs regs)

{

         int error;

         char * filename;

    printk("enter sys_execve\n");

         filename = getname((char __user *) (long)regs.regs[4]);

         error = PTR_ERR(filename);

         if (IS_ERR(filename))

                   goto out;

         error = do_execve(filename, (char __user *__user *) (long)regs.regs[5],

                           (char __user *__user *) (long)regs.regs[6], ®s);

    putname(filename);

    printk("out sys_execve\n");

out:

         return error;

}

Boot logs:

VFS: Mounted root (ext3 filesystem) on device 31:1.

Freeing unused kernel memory: 176k freed

enter sys_execve

out sys_execve

Kernel panic - not syncing: Attempted to kill init!     ß kernel panic here

My question:

1.the kernel panic happened when return to userspace prog?

2.how to solve this problem?

Thank you!

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Hi! What about "init=" boot option?... and CONFIG_CMDLINE as well?