Wind River Support Network

Description

1. Environment
   ======================
   BSP/Configuration: mot_mcpn905-cgl-glibc_cgl
   HOST OS: Red Hat Enterprise Linux WS release 4 (Nahant)
   
   
   2. Problem Description
   ======================
   Exception occurs when executing "sysctl -a" on target
   with testmod.ko
   
   3. Expected Behavior
   ======================
   "sysctl -a" should be done successfully.
   
   4. Observed Behavior
   ======================
   Exception occurs when executing "sysctl -a":
   
   net.ipv4.tcp_adv_win_scale = 2
   neOops: kernel access of bad area, sig: 11 [#1]
   PREEMPT
   NIP: 9015E008 LR: 9015E8F8 SP: AEE77BB0 REGS: aee77b00 TRAP: 0300 Not tainted
   MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
   DAR: 72697677, DSISR: 42000000
   TASK = afff72f0[1097] 'sysctl' THREAD: aee76000
   Last syscall: 3
   GPR00: 0000002C AEE77BB0 AFFF72F0 72697677 7FFFFFFF 902D2A24 AEE77C50 0000000A
   GPR08: 00000008 F2697676 FFFFFFFF 00000003 00000000 1001A140 100F8A80 FFFFFFFF
   GPR16: AEE77E44 AEE77E40 AEE77C70 902D0000 902D0000 902F0000 9F826000 902D0000
   GPR24: 7FFFFFFF 72697677 00000000 AEE77C50 00000000 00000000 F2697675 72697677
   NIP [9015e008] vsnprintf+0x64/0x7d0
   LR [9015e8f8] sprintf+0x5c/0x6c
   Call trace:
   [9015e8f8] sprintf+0x5c/0x6c
   [9000e394] proc_dol3crvec+0x5a4/0x78c
   [90037f20] do_rw_proc+0x128/0x168
   [9008ebfc] vfs_read+0x100/0x1d4
   [9008f07c] sys_read+0xa0/0x14fc
   [900048a4] ret_from_syscall+0x0/0x6c
   t.ipv4.tcp_app_win = 31
   net.ipv4.tcp_rmem = 4096 87380 174760
   net.ipv4.tcp_wmem = 4096 16384 131072
   net.ipv4.tcp_mem = 49152 65536 98304
   IDENTIFIER = WIND00125603

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Product Version

Linux Platforms 1.x

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Downloads

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Installation Notes

Installation Notes

WIND00126538.zip is for 1.4
WIND00126544.zip is for 1.5

1. Unzip the patch under [install_dir]/updates

2. Install the patch CD by entering the patch CD directory and run setup_linux.

3. This is a source only patch so you will have to build the kernel

4. Issue a make fs and make the kernel in a configured directory.

5. Upload the kernel and rootfs into the target and boot it up.

6. run the command " sysctl -a" on target

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