SMP and CONFIG_SLAB_DEBUG

Has anybody been able to boot a 2.6.11-rc3-pa* kernel SMP with slab debugging enabled? when i tried, i triggered a BUG_ON():

kernel BUG at mm/slab.c:1493!

Backtrace:
 [<10130b34>] printk+0x20/0x2c
 [<10163d94>] check_irq_off+0x40/0x50
 [<10165eec>] do_ccupdate_local+0x10/0x5c
 [<10114ec4>] ipi_interrupt+0x198/0x250
 [<10155ae0>] handle_IRQ_event+0x50/0xa4
 [<10155bcc>] __do_IRQ+0x98/0x1e4

the BUG_ON() is checking that irqs are disabled when calling do_ccupdate_local(), which is called as a smp function using IPI.

are interrupts supposed to be disabled when ipi_interrupt() is called? did this behaviour change with the recent irq handling changes?

randolph

Randolph Chung
Debian GNU/Linux Developer, hppa/ia64 ports
http://www.tausq.org/
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