On Sun, 20 May 2007, Srihari Vijayaraghavan wrote: > With no CONFIG_SLUB_DEBUG, things have slightly improved. No more panic. Good. > Serial console is working. Good. But there is another problem:
Well this indicates that something destroys the sysfs pointer structure that SLUB is using. Could you reenable CONFIG_SLUB_DEBUG and boot with the option "slub_debug" on the kernel command line? Also enable the list debug options in kernel hacking. This should show up on the console since the failure is in slub_sysfs_init which is long after the console has been enabled. I wonder why it did not show so far? > Freeing unused kernel memory: 308k freed > BUG: spinlock bad magic on CPU#1, init/1 > lock: ffff81011ec0a100, .magic: ffff8101, .owner: <none>/-1, .owner_cpu: -1 > > Call Trace: > [<ffffffff802fc516>] _raw_spin_lock+0x22/0xf6 > [<ffffffff8026f684>] vma_adjust+0x219/0x454 > [<ffffffff8026f684>] vma_adjust+0x219/0x454 > [<ffffffff8026fe0d>] vma_merge+0x147/0x1f4 > [<ffffffff80270b55>] do_mmap_pgoff+0x414/0x7c7 > [<ffffffff8040aa34>] _spin_unlock_irq+0x24/0x27 > [<ffffffff8020f528>] sys_mmap+0xe5/0x110 > [<ffffffff80209dde>] system_call+0x7e/0x83 Hmmmm..... We have seen this before http://marc.info/?l=linux-kernel&m=117891943401284&w=2 I suspect this is due to an interaction with other debug flags you have set. What I see in your .config is CONFIG_DEBUG_RT_MUTEXES=y Try to switch this off if switching off the lockdep flags does not hel. CONFIG_DEBUG_PI_LIST=y Will go off with the above # CONFIG_RT_MUTEX_TESTER is not set Leave off CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_MUTEXES=y Try toggling if the disabling lockdep flags does not work. CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y CONFIG_LOCKDEP=y I suspect the above are the main candidates for trouble. Could you switch those off? # CONFIG_DEBUG_LOCKDEP is not set CONFIG_TRACE_IRQFLAGS=y CONFIG_DEBUG_SPINLOCK_SLEEP=y # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set CONFIG_STACKTRACE=y # CONFIG_DEBUG_KOBJECT is not set Debug kobject may be helpful. CONFIG_DEBUG_BUGVERBOSE=y - 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/