Pavel Roskin wrote:
This can happen if CONFIG_BCM43XX_MAC80211_DEBUG is enabled, but
CONFIG_DEBUG_FS is not.
Signed-off-by: Pavel Roskin <proski@xxxxxxx>
---
With this patch installed, and the DEBUG configuration set as above, I get a kernel panic on an
x86_64 SMP system. The reason for the panic scrolled off the screen, but the complete stack dump
(hand copied) is as follows:
lock_acquire+0x85/0x31
bcm43xx_mac80211: bcm43xx_debugfs_log_txstat+0x5a/099
_spin_lock+0x25/0x31
bcm43xx_mac80211: bcm43xx_interrupt_tasklet+0x21/0x723
bcm43xx_mac80211: bcm43xx_debugfs_log_txstat+0x5a/0x99
bcm43xx_mac80211: bcm43xx_handle_txstatsus+0x12/0x72
bcm43xx_mac80211: bcm43xx_interrupt_tasklet+0x699/0x723
__lock_acquire+0xca2/0xcf0
bcm43xx_mac80211: bcm43xx_interrupt_handler+0x296/0x723
tasklet_action+0x5e/0xb2
__do_softirq+0x5f/0xe3
call_softirq+0x1c/0x28
do_softirq+0x39/0x9f
irq_exit+0x4e/0x50
do_IRQ+0xba/0xd8
default_idle+0x35/0x51
cpu_idle+0xce/0xf1
start_secondary+0x2e0/0x2f2
Larry
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