On 05/01/2012 09:25 AM, Mohammed Shafi wrote:
i just looked into the code and compared it with
sta_addba_resp_timer_expired and thought whether we should do
this..
Your patch does not help. I still get the following dump in the log:
===============================
[ INFO: suspicious RCU usage. ]
3.4.0-rc5-wl+ #287 Not tainted
-------------------------------
net/mac80211/sta_info.h:456 suspicious rcu_dereference_protected() usage!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
3 locks held by kmemleak/622:
#0: (scan_mutex){+.+...}, at: [<ffffffff8113b0d6>] kmemleak_scan_thread+0x56/0xd0
#1: (&tid_tx->session_timer){+.-...}, at: [<ffffffff8104853a>]
run_timer_softirq+0xfa/0x6e0
#2: (rcu_read_lock){.+.+..}, at: [<ffffffffa0449ff0>]
sta_tx_agg_session_timer_expired+0x0/0x2a0 [mac80211]
stack backtrace:
Pid: 622, comm: kmemleak Not tainted 3.4.0-rc5-wl+ #287
Call Trace:
<IRQ> [<ffffffff8109309d>] lockdep_rcu_suspicious+0xfd/0x130
[<ffffffffa044a1cf>] sta_tx_agg_session_timer_expired+0x1df/0x2a0 [mac80211]
[<ffffffffa0449ff0>] ? ieee80211_start_tx_ba_session+0x450/0x450 [mac80211]
[<ffffffff810485c5>] run_timer_softirq+0x185/0x6e0
As kmemleak seems to be involved, I have added Catalin Marinas to the Cc list.
Larry
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