Created attachment 361526 [details] Dmesg ... Description of problem: Notice this in dmesg better to report-it.. usb 3-1: new full speed USB device using uhci_hcd and address 2 ------------[ cut here ]------------ WARNING: at kernel/trace/ftrace.c:1003 ftrace_bug+0x15c/0x225() (Not tainted) Hardware name: Inspiron 6000 Modules linked in: i2c_core(+) Pid: 74, comm: modprobe Not tainted 2.6.31-23.fc12.i686.PAE #1 Call Trace: [<c044c285>] warn_slowpath_common+0x7b/0xa3 [<c04aaf4f>] ? ftrace_bug+0x15c/0x225 [<f7e487af>] ? i2c_new_dummy+0x8/0x59 [i2c_core] [<c044c2ce>] warn_slowpath_null+0x21/0x35 [<c04aaf4f>] ftrace_bug+0x15c/0x225 [<c04abe37>] ftrace_convert_nops+0x198/0x236 [<f7e487af>] ? i2c_new_dummy+0x8/0x59 [i2c_core] [<c04abf16>] ftrace_module_notify+0x41/0x6e [<c083e31f>] notifier_call_chain+0x5d/0x95 [<c0469f89>] __blocking_notifier_call_chain+0x52/0x78 [<c0469fd0>] blocking_notifier_call_chain+0x21/0x37 [<c0483833>] sys_init_module+0xa1/0x1fe [<c04099cb>] sysenter_do_call+0x12/0x38 ---[ end trace 160151ee1f24b6b9 ]--- ftrace faulted on writing [<f7e487af>] i2c_new_dummy+0x8/0x59 [i2c_core] [drm] Initialized drm 1.1.0 20060810 Version-Release number of selected component (if applicable): 2.6.31-23.fc12.i686.PAE How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
Similar messages come from /var/log/messages with 2.6.31-33.fc12.x86_64: Sep 21 10:14:01 dhcp-65-9 kernel: ------------[ cut here ]------------ Sep 21 10:14:01 dhcp-65-9 kernel: WARNING: at kernel/trace/ftrace.c:1003 ftrace_bug+0x198/0x27e() (Not tainted) Sep 21 10:14:01 dhcp-65-9 kernel: Hardware name: OptiPlex 740 Enhanced Sep 21 10:14:01 dhcp-65-9 kernel: Modules linked in: i2c_core(+) Sep 21 10:14:01 dhcp-65-9 kernel: Pid: 89, comm: modprobe Not tainted 2.6.31-33.fc12.x86_64 #1 Sep 21 10:14:01 dhcp-65-9 kernel: Call Trace: Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff810642ec>] warn_slowpath_common+0x95/0xc3 Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core] Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff81064341>] warn_slowpath_null+0x27/0x3d Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff810d4ace>] ftrace_bug+0x198/0x27e Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core] Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff810d5d26>] ftrace_convert_nops+0x201/0x2b9 Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core] Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff810d5e2a>] ftrace_module_notify+0x4c/0x7f Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff81509c65>] notifier_call_chain+0x72/0xba Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff81086e71>] ? __blocking_notifier_call_chain+0x4c/0x8e Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff81086e88>] __blocking_notifier_call_chain+0x63/0x8e Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff81086eda>] blocking_notifier_call_chain+0x27/0x3d Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff810a472a>] sys_init_module+0xb7/0x249 Sep 21 10:14:01 dhcp-65-9 kernel: [<ffffffff81011f42>] system_call_fastpath+0x16/0x1b Sep 21 10:14:01 dhcp-65-9 kernel: ---[ end trace e826f98e2f432b5c ]---
This is caused by the modules-ro-nx patch: http://lkml.org/lkml/2009/9/21/362
Should be fixed in 2.6.31-40
> Should be fixed in 2.6.31-40 I am afraid that this is not the case: ..... udev: starting version 145 ------------[ cut here ]------------ WARNING: at kernel/trace/ftrace.c:1003 ftrace_bug+0x198/0x27e() (Not tainted) Hardware name: To Be Filled By O.E.M. Modules linked in: i2c_core(+) Pid: 81, comm: modprobe Not tainted 2.6.31-40.fc12.x86_64 #1 Call Trace: [<ffffffff810642ec>] warn_slowpath_common+0x95/0xc3 [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core] [<ffffffff81064341>] warn_slowpath_null+0x27/0x3d [<ffffffff810d4ace>] ftrace_bug+0x198/0x27e [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core] [<ffffffff810d5d26>] ftrace_convert_nops+0x201/0x2b9 [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core] [<ffffffff810d5e2a>] ftrace_module_notify+0x4c/0x7f [<ffffffff81509c65>] notifier_call_chain+0x72/0xba [<ffffffff81086e71>] ? __blocking_notifier_call_chain+0x4c/0x8e [<ffffffff81086e88>] __blocking_notifier_call_chain+0x63/0x8e [<ffffffff81086eda>] blocking_notifier_call_chain+0x27/0x3d [<ffffffff810a472a>] sys_init_module+0xb7/0x249 [<ffffffff81011f42>] system_call_fastpath+0x16/0x1b ---[ end trace aa747a3466ca487c ]--- ftrace faulted on writing [<ffffffffa0003072>] i2c_new_dummy+0x8/0x5e [i2c_core] .......
BTW - this looks like a duplicate of bug #523635.
*** This bug has been marked as a duplicate of bug 523635 ***