[  195.612396] wl12xx: firmware booted (Rev 6.3.10.2.115)
[  195.659271] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  195.667144]
[  195.668731] ======================================================
[  195.675201] [ INFO: possible circular locking dependency detected ]
[  195.681762] 3.5.0-rc7-wl+ #678 Not tainted
[  195.686065] -------------------------------------------------------
[  195.692626] hostapd/1746 is trying to acquire lock:
[  195.697723]  (genl_mutex){+.+.+.}, at: [<c047bf08>] genl_lock+0x24/0x28
[  195.704711]
[  195.704711] but task is already holding lock:
[  195.710815]  (reg_mutex){+.+.+.}, at: [<bf01c12c>] reg_last_request_cell_base+0x3c/0x8c [cfg80211]
[  195.720336]
[  195.720336] which lock already depends on the new lock.
[  195.720336]
[  195.728912]
[  195.728912] the existing dependency chain (in reverse order) is:
[  195.736755]
[  195.736755] -> #1 (reg_mutex){+.+.+.}:
[  195.740905]        [<c009d3f0>] validate_chain+0x11b8/0x1468
[  195.746856]        [<c009db1c>] __lock_acquire+0x47c/0xc50
[  195.752593]        [<c009e6e8>] lock_release_non_nested+0x2bc/0x410
[  195.759185]        [<c009e928>] lock_release+0xec/0x294
[  195.764678]        [<c0567ca0>] __mutex_unlock_slowpath+0xa8/0x178
[  195.771179]        [<c0567d88>] mutex_unlock+0x18/0x1c
[  195.776580]        [<bf027ea4>] nl80211_get_reg+0x50/0x354 [cfg80211]
[  195.783416]        [<c047c158>] genl_rcv_msg+0x218/0x254
[  195.788970]        [<c047b2d8>] netlink_rcv_skb+0xcc/0xe8
[  195.794647]        [<c047bf38>] genl_rcv+0x2c/0x34
[  195.799682]        [<c047afa0>] netlink_unicast+0x1b8/0x244
[  195.805541]        [<c047b4b8>] netlink_sendmsg+0x1c4/0x2c8
[  195.811401]        [<c0445150>] sock_sendmsg+0xa4/0xc4
[  195.816802]        [<c0445f60>] __sys_sendmsg+0x2c4/0x2d4
[  195.822479]        [<c044616c>] sys_sendmsg+0x4c/0x78
[  195.827758]        [<c0015340>] ret_fast_syscall+0x0/0x3c
[  195.833465]
[  195.833465] -> #0 (genl_mutex){+.+.+.}:
[  195.837677]        [<c009aba0>] print_circular_bug+0x74/0x300
[  195.843719]        [<c009d5f4>] validate_chain+0x13bc/0x1468
[  195.849670]        [<c009db1c>] __lock_acquire+0x47c/0xc50
[  195.855438]        [<c009e39c>] lock_acquire+0xac/0x13c
[  195.860900]        [<c0568c1c>] mutex_lock_nested+0x90/0x3b0
[  195.866851]        [<c047bf08>] genl_lock+0x24/0x28
[  195.871978]        [<c047bf28>] genl_rcv+0x1c/0x34
[  195.877014]        [<c047afa0>] netlink_unicast+0x1b8/0x244
[  195.882873]        [<c047b4b8>] netlink_sendmsg+0x1c4/0x2c8
[  195.888702]        [<c0445150>] sock_sendmsg+0xa4/0xc4
[  195.894104]        [<c0445f60>] __sys_sendmsg+0x2c4/0x2d4
[  195.899780]        [<c044616c>] sys_sendmsg+0x4c/0x78
[  195.905090]        [<c0015340>] ret_fast_syscall+0x0/0x3c
[  195.910766]
[  195.910766] other info that might help us debug this:
[  195.910766]
[  195.919158]  Possible unsafe locking scenario:
[  195.919158]
[  195.925354]        CPU0                    CPU1
[  195.930114]        ----                    ----
[  195.934844]   lock(reg_mutex);
[  195.938079]                                lock(genl_mutex);
[  195.944000]                                lock(reg_mutex);
[  195.949859]   lock(genl_mutex);
[  195.953186]
[  195.953186]  *** DEADLOCK ***
[  195.953186]
[  195.959381] 1 lock held by hostapd/1746:
[  195.963500]  #0:  (reg_mutex){+.+.+.}, at: [<bf01c12c>] reg_last_request_cell_base+0x3c/0x8c [cfg80211]
[  195.973449]
[  195.973449] stack backtrace:
[  195.978027] [<c001df98>] (unwind_backtrace+0x0/0x148) from [<c056714c>] (dump_stack+0x20/0x24)
[  195.987060] [<c056714c>] (dump_stack+0x20/0x24) from [<c009ad40>] (print_circular_bug+0x214/0x300)
[  195.996459] [<c009ad40>] (print_circular_bug+0x214/0x300) from [<c009d5f4>] (validate_chain+0x13bc/0x1468)
[  196.006591] [<c009d5f4>] (validate_chain+0x13bc/0x1468) from [<c009db1c>] (__lock_acquire+0x47c/0xc50)
[  196.016357] [<c009db1c>] (__lock_acquire+0x47c/0xc50) from [<c009e39c>] (lock_acquire+0xac/0x13c)
[  196.025665] [<c009e39c>] (lock_acquire+0xac/0x13c) from [<c0568c1c>] (mutex_lock_nested+0x90/0x3b0)
[  196.035156] [<c0568c1c>] (mutex_lock_nested+0x90/0x3b0) from [<c047bf08>] (genl_lock+0x24/0x28)
[  196.044281] [<c047bf08>] (genl_lock+0x24/0x28) from [<c047bf28>] (genl_rcv+0x1c/0x34)
[  196.052490] [<c047bf28>] (genl_rcv+0x1c/0x34) from [<c047afa0>] (netlink_unicast+0x1b8/0x244)
[  196.061431] [<c047afa0>] (netlink_unicast+0x1b8/0x244) from [<c047b4b8>] (netlink_sendmsg+0x1c4/0x2c8)
[  196.071197] [<c047b4b8>] (netlink_sendmsg+0x1c4/0x2c8) from [<c0445150>] (sock_sendmsg+0xa4/0xc4)
[  196.080505] [<c0445150>] (sock_sendmsg+0xa4/0xc4) from [<c0445f60>] (__sys_sendmsg+0x2c4/0x2d4)
[  196.089630] [<c0445f60>] (__sys_sendmsg+0x2c4/0x2d4) from [<c044616c>] (sys_sendmsg+0x4c/0x78)
[  196.098693] [<c044616c>] (sys_sendmsg+0x4c/0x78) from [<c0015340>] (ret_fast_syscall+0x0/0x3c)
[  196.115722] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready