On (05/15/16 01:31), Sergey Senozhatsky wrote:
> [11455.550649] ===
> [11455.550652] [ INFO: suspicious RCU usage. ]
> [11455.550657] 4.6.0-rc7-next-20160513-dbg-4-g8de8b92-dirty #655 Not
> tainted
> [11455.550660] ---
> [11455.550664] drivers/net/wireless/intel/iwlwifi/mvm/mvm.h:1069 suspicious
> rcu_dereference_protected() usage!
> [11455.550667]
>other info that might help us debug this:
>
> [11455.550671]
>rcu_scheduler_active = 1, debug_locks = 0
> [11455.550675] 5 locks held by irq/29-iwlwifi/247:
> [11455.550677] #0: (sync_cmd_lockdep_map){..}, at: []
> iwl_pcie_irq_handler+0x0/0x635 [iwlwifi]
> [11455.550705] #1: (&(>lock)->rlock){+.+...}, at: []
> iwl_pcie_rx_handle+0x38/0x5d5 [iwlwifi]
> [11455.550725] #2: (rcu_read_lock){..}, at: []
> ieee80211_rx_napi+0x152/0x8e2 [mac80211]
> [11455.550768] #3: (&(>rx_path_lock)->rlock){+.-...}, at:
> [] ieee80211_rx_handlers+0x2e/0x1fe1 [mac80211]
> [11455.550804] #4: (rcu_read_lock){..}, at: []
> iwl_mvm_update_tkip_key+0x0/0x162 [iwlmvm]
> [11455.550833]
[ 5406.034379] iwlwifi :02:00.0: Queue 16 stuck for 1 ms.
[ 5406.034385] iwlwifi :02:00.0: Current SW read_ptr 98 write_ptr 125
[ 5406.034431] iwl data: : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00
[ 5406.034454] iwlwifi :02:00.0: FH TRBs(0) = 0x8000300f
[ 5406.034475] iwlwifi :02:00.0: FH TRBs(1) = 0xc0110071
[ 5406.034491] iwlwifi :02:00.0: FH TRBs(2) = 0x
[ 5406.034505] iwlwifi :02:00.0: FH TRBs(3) = 0x8030001e
[ 5406.034520] iwlwifi :02:00.0: FH TRBs(4) = 0x
[ 5406.034536] iwlwifi :02:00.0: FH TRBs(5) = 0x
[ 5406.034551] iwlwifi :02:00.0: FH TRBs(6) = 0x
[ 5406.034566] iwlwifi :02:00.0: FH TRBs(7) = 0x00709087
[ 5406.034625] iwlwifi :02:00.0: Q 0 is active and mapped to fifo 3 ra_tid
0x [31,31]
[ 5406.034690] iwlwifi :02:00.0: Q 1 is active and mapped to fifo 2 ra_tid
0x [0,0]
[ 5406.034756] iwlwifi :02:00.0: Q 2 is active and mapped to fifo 1 ra_tid
0x [17,17]
[ 5406.034821] iwlwifi :02:00.0: Q 3 is active and mapped to fifo 0 ra_tid
0x [16,16]
[ 5406.034886] iwlwifi :02:00.0: Q 4 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.034944] iwlwifi :02:00.0: Q 5 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035010] iwlwifi :02:00.0: Q 6 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035068] iwlwifi :02:00.0: Q 7 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035133] iwlwifi :02:00.0: Q 8 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035192] iwlwifi :02:00.0: Q 9 is active and mapped to fifo 7 ra_tid
0x [136,136]
[ 5406.035257] iwlwifi :02:00.0: Q 10 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035323] iwlwifi :02:00.0: Q 11 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035388] iwlwifi :02:00.0: Q 12 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035446] iwlwifi :02:00.0: Q 13 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035505] iwlwifi :02:00.0: Q 14 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035563] iwlwifi :02:00.0: Q 15 is active and mapped to fifo 5 ra_tid
0x [0,0]
[ 5406.035622] iwlwifi :02:00.0: Q 16 is active and mapped to fifo 1 ra_tid
0x [98,125]
[ 5406.035687] iwlwifi :02:00.0: Q 17 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035752] iwlwifi :02:00.0: Q 18 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035817] iwlwifi :02:00.0: Q 19 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.035883] iwlwifi :02:00.0: Q 20 is inactive and mapped to fifo 0
ra_tid 0xfffc [0,0]
[ 5406.035940] iwlwifi :02:00.0: Q 21 is inactive and mapped to fifo 0
ra_tid 0x0003 [0,0]
[ 5406.035999] iwlwifi :02:00.0: Q 22 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036064] iwlwifi :02:00.0: Q 23 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036122] iwlwifi :02:00.0: Q 24 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036188] iwlwifi :02:00.0: Q 25 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036246] iwlwifi :02:00.0: Q 26 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036305] iwlwifi :02:00.0: Q 27 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036370] iwlwifi :02:00.0: Q 28 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036428] iwlwifi :02:00.0: Q 29 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036487] iwlwifi :02:00.0: Q 30 is inactive and mapped to fifo 0
ra_tid 0x [0,0]
[ 5406.036555] iwlwifi :02:00.0: Microcode SW error detected. Restarting
0x200.
[ 5406.036558] iwlwifi :02:00.0: CSR values:
[ 5406.036559]
