Kernel panic on AR7161 platform with AR9220 WIFI card while AH_DEBUG used. After some debug and tracing, found that it is caused by ath_hal_reg_read(_ah, _reg). I replaced it with inline version and it just works fine. But it is not a proper fix. Index: ah_osdep.h =================================================================== --- ah_osdep.h (revision 225165) +++ ah_osdep.h (working copy) @@ -91,8 +91,15 @@ * defined below. */ #if defined(AH_DEBUG) || defined(AH_REGOPS_FUNC) || defined(AH_DEBUG_ALQ) + #define OS_REG_WRITE(_ah, _reg, _val) ath_hal_reg_write(_ah, _reg, _val) -#define OS_REG_READ(_ah, _reg) ath_hal_reg_read(_ah, _reg) +//#define OS_REG_READ(_ah, _reg) ath_hal_reg_read(_ah, _reg) +#define OS_REG_READ(_ah, _reg) \ + (OS_REG_UNSWAPPED(_reg) ? \ + bus_space_read_4((bus_space_tag_t)(_ah)->ah_st, \ + (bus_space_handle_t)(_ah)->ah_sh, (_reg)) : \ + bus_space_read_stream_4((bus_space_tag_t)(_ah)->ah_st, \ + (bus_space_handle_t)(_ah)->ah_sh, (_reg))) extern void ath_hal_reg_write(struct ath_hal *ah, u_int reg, u_int32_t val); extern u_int32_t ath_hal_reg_read(struct ath_hal *ah, u_int reg); How-To-Repeat: Atheros AR7161 BIG ENDIAN platform + AR9220 WIFI CARD + KERNEL enable "AH_DEBUG" --- # Wireless NIC cards options IEEE80211_DEBUG #options IEEE80211_SUPPORT_MESH options IEEE80211_SUPPORT_TDMA device wlan # 802.11 support device wlan_wep # 802.11 WEP support device wlan_ccmp # 802.11 CCMP support device wlan_tkip # 802.11 TKIP support device ath # Atheros NIC's device ath_pci # Atheros pci/cardbus glue options ATH_DEBUG device ath_hal options AH_DEBUG option AH_SUPPORT_AR5416 option AH_RXCFG_SDMAMW_4BYTES # See NOTES for details of this WAR device ath_rate_sample -------------- avail memory = 53080064 (50MB) nexus0: <MIPS32 root nexus> clock0: <Generic MIPS32 ticker> on nexus0 Timecounter "MIPS32" frequency 340000000 Hz quality 800 Event timer "MIPS32" frequency 340000000 Hz quality 800 apb0 at irq 4 on nexus0 uart0: <16550 or compatible> on apb0 uart0: console (115200,n,8,1) pcib0 at irq 0 on nexus0 pci0: <PCI bus> on pcib0 pci0: <old, non-VGA display device> at device 0.0 (no driver attached) ath0: <Atheros 9280> irq 1 at device 18.0 on pci0 Trap cause = 7 (bus error (load or store) - kernel mode) [ thread pid 0 tid 100000 ] Stopped at ar5416SetPowerMode+0xdc: andi v0,v0,0xf db> bt Tracing pid 0 tid 100000 td 0x80961880 db_trace_thread+30 (?,?,?,?) ra 80055bd0 sp 80aee5b0 sz 24 80055abc+114 (0,?,ffffffff,?) ra 8005518c sp 80aee5c8 sz 32 80054e04+388 (?,?,?,?) ra 80055310 sp 80aee5e8 sz 168 db_command_loop+70 (?,?,?,?) ra 800579d4 sp 80aee690 sz 24 800578e0+f4 (?,?,?,?) ra 801b6328 sp 80aee6a8 sz 424 kdb_trap+104 (?,?,?,?) ra 8034eaa0 sp 80aee850 sz 40 trap+e58 (?,?,?,?) ra 80346780 sp 80aee878 sz 168 MipsKernGenException+134 (0,b0007044,7044,0) ra 80098ebc sp 80aee920 sz 200 ar5416SetPowerMode+dc (?,?,?,?) ra 800a1558 sp 80aee9e8 sz 56 800a1360+1f8 (?,?,?,?) ra 8006c1ac sp 80aeea20 sz 80 ath_hal_attach+a0 (?,?,?,?) ra 80064efc sp 80aeea70 sz 64 ath_attach+d4 (?,?,?,?) ra 8005c52c sp 80aeeab0 sz 152 8005c23c+2f0 (?,?,?,?) ra 801b0854 sp 80aeeb48 sz 88 device_attach+354 (?,?,?,?) ra 801b16bc sp 80aeeba0 sz 72 device_probe_and_attach+5c (?,?,?,?) ra 801b16f4 sp 80aeebe8 sz 24 bus_generic_attach+20 (?,?,?,?) ra 800c85a4 sp 80aeec00 sz 24 800c8498+10c (?,?,?,?) ra 801b0854 sp 80aeec18 sz 40 device_attach+354 (?,?,?,?) ra 801b16bc sp 80aeec40 sz 72 device_probe_and_attach+5c (?,?,?,?) ra 801b16f4 sp 80aeec88 sz 24 bus_generic_attach+20 (?,?,?,?) ra 8036509c sp 80aeeca0 sz 24 80364e4c+250 (?,?,?,?) ra 801b0854 sp 80aeecb8 sz 56 device_attach+354 (?,?,?,?) ra 801b16bc sp 80aeecf0 sz 72 device_probe_and_attach+5c (?,?,?,?) ra 801b16f4 sp 80aeed38 sz 24 bus_generic_attach+20 (?,?,?,?) ra 8035c968 sp 80aeed50 sz 24 8035c944+24 (?,?,?,?) ra 801b0854 sp 80aeed68 sz 24 device_attach+354 (?,?,?,?) ra 801b16bc sp 80aeed80 sz 72 device_probe_and_attach+5c (?,?,?,?) ra 801b1978 sp 80aeedc8 sz 24 bus_generic_new_pass+10c (?,?,?,?) ra 801af514 sp 80aeede0 sz 40 bus_set_pass+c0 (?,?,?,?) ra 801af584 sp 80aeee08 sz 40 root_bus_configure+14 (?,?,?,?) ra 803459cc sp 80aeee30 sz 24 803459bc+10 (?,?,?,?) ra 80135b14 sp 80aeee48 sz 24 mi_startup+138 (?,?,?,?) ra 80050190 sp 80aeee60 sz 32 _start+90 (?,?,?,?) ra 0 sp 80aeee80 sz 0
Responsible Changed From-To: freebsd-bugs->freebsd-wireless Bump
batch change: For bugs that match the following - Status Is In progress AND - Untouched since 2018-01-01. AND - Affects Base System OR Documentation DO: Reset to open status. Note: I did a quick pass but if you are getting this email it might be worthwhile to double check to see if this bug ought to be closed.
Keyword: crash – in lieu of summary line prefix: [panic] * bulk change for the keyword * summary lines may be edited manually (not in bulk). Keyword descriptions and search interface: <https://bugs.freebsd.org/bugzilla/describekeywords.cgi>
^Triage: MIPS support has been de-orbited. To submitter: is this aging PR still relevant?