From: wang l. <lia...@gm...> - 2006-01-06 08:08:14
|
hi, I test the uml kernel iomem functions, and found that if the iomem file size is greater than 2M, the uml kernel will panic. the output is: Checking for the skas3 patch in the host...not found Checking for /proc/mm...not found Checking PROT_EXEC mmap in /tmp...OK tracing thread pid =3D 9425 Linux version 2.6.10 ( lia...@gm...) (gcc version 3.4.3 ) #202 Th= u Jan 5 15:02:27 CST 2006 Built 1 zonelists Kernel command line: ubd0=3D/users/lianwei/work/uml_linux//temp_COW,/users/lianwei/w ork/uml_linux//rootfs_x86.um eth0=3Dtuntap,,, 192.168.0.100 iomem=3Dmmapper iomem=3D testmem video=3Dvfb: mem=3D128M root=3D98:0 PID hash table entries: 1024 (order: 10, 16384 bytes) Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) Memory: 126336k available Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Kernel panic - not syncing: Segfault with no mm EIP: 0073:[<a0037c61>] CPU: 0 Not tainted ESP: 007b:a022be54 EFLAGS: 00010292 Not tainted EAX: a0904148 EBX: a022bebc ECX: a022bde4 EDX: ffffffff ESI: 00000001 EDI: 00000001 EBP: a022be7c DS: 007b ES: 007b Call Trace: [<a004b6d5>] notifier_call_chain+0x25/0x40 [<a003aa32>] panic+0x72/0x110 [<a001d051>] segv+0x1d1/0x220 [<a01984f7>] sigemptyset+0x17/0x30 [<a001ad90>] change_signals+0x60/0x90 [<a001d3a5>] segv_handler+0x115/0x260 [<a0037c61>] __wake_up_common+0x11/0x70 [<a0021977>] sig_handler_common_tt+0x97/0x140 [<a001d531>] sig_handler+0x21/0x40 [<a01981f8>] __restore+0x0/0x8 [<a0037c61>] __wake_up_common+0x11/0x70 [<a0037d06>] __wake_up+0x46/0x60 [<a0053237>] __wake_up_bit+0x37/0x40 [<a00a7b13>] proc_get_inode+0xe3/0x130 [<a00a7ba5>] proc_fill_super+0x45/0xb0 [<a0080272>] get_sb_single+0x62/0xc0 [<a008032a>] do_kern_mount+0x5a/0xf0 [<a00a7b60>] proc_fill_super+0x0/0xb0 [<a0020ff0>] signal_tramp+0x0/0x110 [<a00803e3>] kern_mount+0x23/0x25 [<a0020ff0>] signal_tramp+0x0/0x110 [<a000c8bd>] proc_root_init+0x2d/0x130 [<a0002629>] start_kernel+0x159/0x1a0 [<a0002180>] unknown_bootoption+0x0/0x220 [<a001fcc8>] start_kernel_proc+0x48/0x80 [<a00024d0>] start_kernel+0x0/0x1a0 did anyone have ever seen this problem? my uml version is 2.6.10 thanks. |