On Sun, 22 Jul 2007 20:23:20 +0530, "Satyam Sharma" <[EMAIL PROTECTED]> wrote:
> On 7/22/07, Ingo Molnar <[EMAIL PROTECTED]> wrote: > > > > enabling CONFIG_PCWATCHDOG=y crashes bzImage bootup, see below. Tested > > on latest -git. > > > > Ingo > > > > -------------------> > > Calling initcall 0xc1e81f8c: pcwd_init_module+0x0/0x14() > > WARNING: at lib/kref.c:33 kref_get() > > [<c0105f6e>] show_trace_log_lvl+0x19/0x2e > > [<c0106067>] show_trace+0x12/0x14 > > [<c010607d>] dump_stack+0x14/0x16 > > [<c051aa54>] kref_get+0x37/0x40 > > [<c0519dfe>] kobject_get+0x12/0x17 > > [<c06fd12a>] get_bus+0x11/0x21 > > [<c06fd729>] bus_add_driver+0x18/0x16b > > [<c06fe45a>] driver_register+0x66/0x6b > > [<c0702575>] isa_register_driver+0x27/0x126 > > [<c1e81f9e>] pcwd_init_module+0x12/0x14 > > [<c1e50838>] kernel_init+0x15a/0x2df > > [<c0105d87>] kernel_thread_helper+0x7/0x10 > > ======================= > > Trying to kref_get() isa_driver.device_driver.bus->subsys.kobj.kref > but it hasn't even been kref_init()'ed yet/already. > > > WARNING: at lib/kref.c:33 kref_get() > > [<c0105f6e>] show_trace_log_lvl+0x19/0x2e > > [<c0106067>] show_trace+0x12/0x14 > > [<c010607d>] dump_stack+0x14/0x16 > > [<c051aa54>] kref_get+0x37/0x40 > > [<c0519dfe>] kobject_get+0x12/0x17 > > [<c051a429>] kobject_init+0x32/0x43 > > [<c051a4c3>] kobject_register+0x15/0x31 > > [<c06fd76d>] bus_add_driver+0x5c/0x16b > > [<c06fe45a>] driver_register+0x66/0x6b > > [<c0702575>] isa_register_driver+0x27/0x126 > > [<c1e81f9e>] pcwd_init_module+0x12/0x14 > > [<c1e50838>] kernel_init+0x15a/0x2df > > [<c0105d87>] kernel_thread_helper+0x7/0x10 > > ======================= > > Trying to kref_get() isa_driver.device_driver.kobj.kset->kobj.kref > but it hasn't even been kref_init()'ed yet/already. > > > BUG: spinlock bad magic on CPU#0, swapper/1 > > lock: c1b6a888, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 > > [<c0105f6e>] show_trace_log_lvl+0x19/0x2e > > [<c0106067>] show_trace+0x12/0x14 > > [<c010607d>] dump_stack+0x14/0x16 > > [<c052b0be>] spin_bug+0xa1/0xa9 > > [<c052b289>] _raw_spin_lock+0x1e/0x104 > > [<c1385f7e>] _spin_lock+0x54/0x62 > > [<c051a026>] kobject_shadow_add+0x84/0x171 > > [<c051a11d>] kobject_add+0xa/0xc > > [<c051a4ca>] kobject_register+0x1c/0x31 > > [<c06fd76d>] bus_add_driver+0x5c/0x16b > > [<c06fe45a>] driver_register+0x66/0x6b > > [<c0702575>] isa_register_driver+0x27/0x126 > > [<c1e81f9e>] pcwd_init_module+0x12/0x14 > > [<c1e50838>] kernel_init+0x15a/0x2df > > [<c0105d87>] kernel_thread_helper+0x7/0x10 > > ======================= > > Trying to spin_lock() isa_driver.device_driver.kobj.kset->list_lock > but it hasn't even been spin_lock_init()'ed already. > > Greg/Cornelia, any idea when/why would such errors normally occur? Might be some ordering problem (bus not registered yet). Is the isa bus already up? Changing link order or initcall levels might help. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
