I have a similar issue with Mac Book Pro 15", with only one of my two
base stations, the other one seems to work fine.

The base station that fails is a Freebox Revolution, configured to use
channels 12 and 8 with 40MHz bandwidth in 2.4GHz mode (according to its
configuration page).

The base station that works (same SSID, same password) is an old Airport
Time Capsule.

When I attempt to connect to the Freebox Revolution, I get a stack
trace:

[ 1008.652836] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 
0x30)
[ 1011.548069] ------------[ cut here ]------------
[ 1011.548099] WARNING: CPU: 2 PID: 2262 at net/wireless/sme.c:724 
__cfg80211_connect_result+0x3ab/0x410 [cfg80211]
[ 1011.548100] Modules linked in: rfcomm fuse nf_conntrack_netbios_ns 
nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 
xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc 
ip6table_mangle ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 
ip6table_raw ip6table_security iptable_mangle iptable_nat nf_conntrack_ipv4 
nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_security 
ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep nls_utf8 hfsplus 
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel btusb 
snd_hda_codec_cirrus snd_hda_codec_generic snd_hda_codec_hdmi brcmfmac kvm 
btrtl btbcm btintel joydev bluetooth brcmutil snd_hda_intel snd_hda_codec 
applesmc cfg80211 iTCO_wdt irqbypass iTCO_vendor_support input_polldev
[ 1011.548128]  snd_hda_core crct10dif_pclmul mmc_core crc32_pclmul snd_hwdep 
snd_seq ghash_clmulni_intel intel_cstate intel_uncore mei_me intel_rapl_perf 
bcm5974 snd_seq_device rfkill mei i2c_i801 snd_pcm i2c_smbus lpc_ich 
thunderbolt snd_timer snd soundcore shpchp sbs sbshc acpi_als apple_gmux 
kfifo_buf industrialio video tpm_tis tpm_tis_core tpm apple_bl nfsd auth_rpcgss 
nfs_acl lockd grace sunrpc uas usb_storage hid_apple btrfs xor amdkfd 
amd_iommu_v2 radeon raid6_pq i2c_algo_bit drm_kms_helper ttm crc32c_intel drm 
fjes
[ 1011.548154] CPU: 2 PID: 2262 Comm: kworker/u16:9 Tainted: G        W       
4.8.14-300.fc25.x86_64 #1
[ 1011.548155] Hardware name: Apple Inc. MacBookPro11,5/Mac-06F11F11946D27C5, 
BIOS MBP114.88Z.0172.B09.1602151732 02/15/2016
[ 1011.548164] Workqueue: cfg80211 cfg80211_event_work [cfg80211]
[ 1011.548165]  0000000000000286 00000000650b1753 ffff92b31fe0fc98 
ffffffff823e5ded
[ 1011.548167]  0000000000000000 0000000000000000 ffff92b31fe0fcd8 
ffffffff820a0e8b
[ 1011.548169]  000002d400000008 ffff92b36aa9c008 0000000000000000 
ffff92b36aa9b000
[ 1011.548171] Call Trace:
[ 1011.548175]  [] dump_stack+0x63/0x86
[ 1011.548178]  [] __warn+0xcb/0xf0
[ 1011.548180]  [] warn_slowpath_null+0x1d/0x20
[ 1011.548190]  [] __cfg80211_connect_result+0x3ab/0x410 [cfg80211]
[ 1011.548199]  [] cfg80211_process_wdev_events+0x129/0x1a0 [cfg80211]
[ 1011.548207]  [] cfg80211_process_rdev_events+0x38/0x70 [cfg80211]
[ 1011.548215]  [] cfg80211_event_work+0x1e/0x30 [cfg80211]
[ 1011.548217]  [] process_one_work+0x184/0x430
[ 1011.548218]  [] worker_thread+0x4e/0x480
[ 1011.548219]  [] ? process_one_work+0x430/0x430
[ 1011.548220]  [] ? process_one_work+0x430/0x430
[ 1011.548222]  [] kthread+0xd8/0xf0
[ 1011.548226]  [] ret_from_fork+0x1f/0x40
[ 1011.548228]  [] ? kthread_worker_fn+0x180/0x180
[ 1011.548229] ---[ end trace 022b2d25dbb9a245 ]--


** Bug watch added: Linux Kernel Bug Tracker #103201
   http://bugzilla.kernel.org/show_bug.cgi?id=103201

** Also affects: linux (Fedora) via
   http://bugzilla.kernel.org/show_bug.cgi?id=103201
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1630324

Title:
  Broadcom wifi dies in 60s cycles with 4.8 kernel

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