Hi Ingo, On Wed, 16 Jul 2008 10:23:52 +0200, Ingo Molnar wrote: > > hi Jean, > > * Jean Delvare <[EMAIL PROTECTED]> wrote: > > > i2c-nforce2: Add support for multiplexing on the Tyan S4985 > > -tip random boot testing started triggering the following upstream boot > crash, starting two days ago when the i2c tree was merged: > > [ 11.772002] kobject (ffff81003e8c4160): tried to init an initialized > object, something is seriously wrong. > [ 11.784004] Pid: 1, comm: swapper Not tainted 2.6.26-00007-g279e902-dirty > #19896 > [ 11.793651] > [ 11.793651] Call Trace: > [ 11.793651] [<ffffffff8054471a>] kobject_init+0x7a/0x80 > [ 11.798969] [<ffffffff805f0f9d>] device_initialize+0x2d/0xd0 > [ 11.806323] [<ffffffff805f19a1>] device_register+0x11/0x20 > [ 11.811903] [<ffffffff8087ee3b>] i2c_register_adapter+0xab/0x1d0 > [ 11.817666] [<ffffffff8087f0e6>] i2c_add_adapter+0x96/0xb0 > [ 11.823761] [<ffffffff81196372>] nforce2_s4985_init+0x272/0x370 > [ 11.829358] [<ffffffff8027516a>] ? getnstimeofday+0x3a/0xc0 > [ 11.835365] [<ffffffff802728ba>] ? ktime_get_ts+0x4a/0x60 > [ 11.840853] [<ffffffff81196100>] ? nforce2_s4985_init+0x0/0x370 > [ 11.846859] [<ffffffff81160aa3>] kernel_init+0x123/0x300 > [ 11.852261] [<ffffffff81160140>] ? early_idt_handler+0x0/0x74 > [ 11.857957] [<ffffffff80228548>] child_rip+0xa/0x12 > [ 11.863781] [<ffffffff81160140>] ? early_idt_handler+0x0/0x74 > [ 11.868757] [<ffffffff81160980>] ? kernel_init+0x0/0x300 > [ 11.874160] [<ffffffff8022853e>] ? child_rip+0x0/0x12 > [ 11.879989] > [ 11.881141] general protection fault: 0000 [1] SMP > [ 11.881141] CPU 1 > > with this config: > > http://redhat.com/~mingo/misc/config-Wed_Jul_16_02_26_04_CEST_2008.bad > > today i had time to do a bisection run, and it came up with this commit: > > | 279e902445557897707d325182916a6e28ba80de is first bad commit > | commit 279e902445557897707d325182916a6e28ba80de > | Author: Jean Delvare <[EMAIL PROTECTED]> > | Date: Mon Jul 14 22:38:21 2008 +0200 > | > | i2c-nforce2: Add support for multiplexing on the Tyan S4985 > > the crash is reproducible and i can test any fix patch in short order. > As a quick temporary hack i've reverted this patch for now via the patch > below, to keep the tests going. (Can send more details about the > test-system if needed.)
Probably the same problem as reported by John Stultz: http://lkml.org/lkml/2008/7/15/720 I'll look into it once I am done with higher priority tasks (read: baby's bath ;)). > btw., Greg, the kobject debugging check and output is really nice, > informative and useful! It likely pinpoints the real bug here. Is this something new in 2.6.26-gitX? I want to know if the bug is something new or if it could be already present in 2.6.26 and earlier kernels and went unnoticed so far. Thanks, -- Jean Delvare _______________________________________________ i2c mailing list i2c@lm-sensors.org http://lists.lm-sensors.org/mailman/listinfo/i2c
