I added a AR5005G to a laptop toget WiFI and got UBSAN warnings with todays git kernel.
Relevant parts of dmesg (anything wireless or ath5k related + the UBSAN warnings themselves):
[ 24.407902] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 24.426476] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[...]
[ 25.075174] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 25.082956] cfg80211: failed to load regulatory.d
[...]
[ 31.285760] ath5k 0000:06:04.0: registered as 'phy0'
[ 32.058128] ath: EEPROM regdomain: 0x63
[ 32.058130] ath: EEPROM indicates we should expect a direct regpair map
[ 32.058134] ath: Country alpha2 being used: 00
[ 32.058135] ath: Regpair used: 0x63
[ 32.058256] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 32.058554] ath5k: phy0: Atheros AR2413 chip found (MAC: 0x78, PHY: 0x45)
[ 32.339426] ath5k 0000:06:04.0 wlp6s4: renamed from wlan0
[ 45.651817] ================================================================================
[ 45.654340] UBSAN: Undefined behaviour in drivers/net/wireless/ath/ath5k/base.c:498:16
[ 45.656882] load of value 225 is not a valid value for type '_Bool'
[ 45.659422] CPU: 0 PID: 340 Comm: NetworkManager Not tainted 5.5.0-rc1-00027-gae4b064e2a61 #4
[ 45.662014] Hardware name: QCI 00000000000000000 /EF6 , BIOS Q3B81 10/11/2005
[ 45.667286] Call Trace:
[ 45.669906] dump_stack+0x16/0x19
[ 45.672508] ubsan_epilogue+0x8/0x20
[ 45.675114] __ubsan_handle_load_invalid_value.cold+0x43/0x48
[ 45.677786] ? ieee80211_wake_queues_by_reason+0x85/0xa0 [mac80211]
[ 45.680441] ? __internal_add_timer+0x14/0x50
[ 45.683081] ath5k_vif_iter.cold+0x43/0x48 [ath5k]
[ 45.685722] ath5k_update_bssid_mask_and_opmode+0x52/0x140 [ath5k]
[ 45.688390] ath5k_add_interface+0x198/0x250 [ath5k]
[ 45.691061] ? ath5k_start+0xeb/0x120 [ath5k]
[ 45.693680] drv_add_interface+0x34/0x70 [mac80211]
[ 45.696265] ieee80211_do_open+0x13d/0x980 [mac80211]
[ 45.698844] ieee80211_open+0x41/0x50 [mac80211]
[ 45.701382] __dev_open+0xb6/0x150
[ 45.703920] __dev_change_flags+0x182/0x200
[ 45.706482] dev_change_flags+0x28/0x60
[ 45.709032] do_setlink+0x281/0x980
[ 45.711519] ? rtnl_is_locked+0xd/0x20
[ 45.713957] ? netdev_master_upper_dev_get+0xf/0x90
[ 45.716374] ? __nla_parse+0x2d/0x40
[ 45.718760] __rtnl_newlink+0x5f5/0x960
[ 45.721120] ? __nla_reserve+0x20/0xd0
[ 45.723443] ? nla_put+0x32/0x60
[ 45.725743] ? __kmalloc_track_caller+0xe7/0x270
[ 45.728060] ? pskb_expand_head+0x59/0x460
[ 45.730379] ? skb_free_head+0x25/0x30
[ 45.732680] ? sk_filter_trim_cap+0x33/0x210
[ 45.735001] ? __netlink_sendskb+0x37/0x50
[ 45.737335] ? apparmor_task_free+0xc0/0xc0
[ 45.739665] ? security_capable+0x3f/0x60
[ 45.741985] ? kmem_cache_alloc+0xc7/0x230
[ 45.744299] ? rtnl_newlink+0x24/0x60
[ 45.746616] rtnl_newlink+0x39/0x60
[ 45.748890] ? __rtnl_newlink+0x960/0x960
[ 45.751160] rtnetlink_rcv_msg+0x2bf/0x3e0
[ 45.753428] ? rtnl_calcit+0x100/0x100
[ 45.755680] netlink_rcv_skb+0x76/0xf0
[ 45.757929] ? rtnl_calcit+0x100/0x100
[ 45.760167] rtnetlink_rcv+0xd/0x10
[ 45.762318] netlink_unicast+0x19d/0x280
[ 45.764378] ? __check_object_size+0x104/0x11d
[ 45.766437] netlink_sendmsg+0x20f/0x470
[ 45.768434] ? netlink_unicast+0x280/0x280
[ 45.770390] sock_sendmsg+0x75/0x90
[ 45.772290] ____sys_sendmsg+0x1ea/0x240
[ 45.774149] ___sys_sendmsg+0x66/0xa0
[ 45.775930] ? addrconf_sysctl_forward+0xe5/0x240
[ 45.777700] ? dev_forward_change+0x140/0x140
[ 45.779474] ? sysctl_head_finish+0x11/0x30
[ 45.781256] ? proc_sys_call_handler+0xf8/0x1c0
[ 45.783041] ? proc_sys_call_handler+0x1c0/0x1c0
[ 45.784790] ? __fget_light+0x52/0x60
[ 45.786514] ? __fdget+0xd/0x10
[ 45.788195] __sys_sendmsg+0x4b/0x90
[ 45.789876] sys_socketcall+0x3af/0x450
[ 45.791532] ? exit_to_usermode_loop+0x76/0xb0
[ 45.793190] do_fast_syscall_32+0x95/0x270
[ 45.794831] entry_SYSENTER_32+0xa5/0xf7
[ 45.796461] EIP: 0xb7ee19a9
[ 45.798073] Code: 5d c3 8d b4 26 00 00 00 00 b8 00 09 3d 00 eb b4 8b 04 24 c3 8b 14 24 c3 8b 1c 24 c3 8b 34 24 c3 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d 76 00 58 b8 77 00 00 00 cd 80 90 8d 76
[ 45.801678] EAX: ffffffda EBX: 00000010 ECX: bf8041a0 EDX: 00000000
[ 45.803543] ESI: b7711000 EDI: 020948c8 EBP: 020948c8 ESP: bf804190
[ 45.805422] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b EFLAGS: 00000282
[ 45.807320] ================================================================================
[ 45.935535] ================================================================================
[ 45.937514] UBSAN: Undefined behaviour in drivers/net/wireless/ath/ath5k/base.c:489:16
[ 45.939532] load of value 8 is not a valid value for type '_Bool'
[ 45.941557] CPU: 0 PID: 55 Comm: kworker/u2:2 Not tainted 5.5.0-rc1-00027-gae4b064e2a61 #4
[ 45.943638] Hardware name: QCI 00000000000000000 /EF6 , BIOS Q3B81 10/11/2005
[ 45.947971] Workqueue: phy0 ieee80211_reconfig_filter [mac80211]
[ 45.950165] Call Trace:
[ 45.952352] dump_stack+0x16/0x19
[ 45.954528] ubsan_epilogue+0x8/0x20
[ 45.956700] __ubsan_handle_load_invalid_value.cold+0x43/0x48
[ 45.958930] ath5k_vif_iter.cold+0xd/0x48 [ath5k]
[ 45.961182] ? ath5k_remove_padding+0xa0/0xa0 [ath5k]
[ 45.963457] __iterate_interfaces+0x72/0x110 [mac80211]
[ 45.965743] ? ath5k_remove_padding+0xa0/0xa0 [ath5k]
[ 45.968046] ieee80211_iterate_active_interfaces_atomic+0x15/0x20 [mac80211]
[ 45.970405] ath5k_configure_filter+0x10d/0x1a0 [ath5k]
[ 45.972764] ? __switch_to_asm+0x27/0x50
[ 45.975120] ? __switch_to_asm+0x33/0x50
[ 45.977438] ? __switch_to_asm+0x27/0x50
[ 45.979749] ? ath5k_set_key+0x160/0x160 [ath5k]
[ 45.982095] ieee80211_configure_filter+0x123/0x1a0 [mac80211]
[ 45.984451] ieee80211_reconfig_filter+0xd/0x10 [mac80211]
[ 45.986827] process_one_work+0x134/0x2b0
[ 45.989198] worker_thread+0x13e/0x390
[ 45.991557] kthread+0xcd/0x100
[ 45.993909] ? process_one_work+0x2b0/0x2b0
[ 45.996271] ? kthread_unpark+0x70/0x70
[ 45.998620] ret_from_fork+0x2e/0x38
[ 46.000968] ================================================================================
--
Meelis Roos <[email protected]>