Bob Copeland wrote: > On Thu, Jul 30, 2009 at 10:31 AM, Michael Buesch<mb@xxxxxxxxx> wrote: > >> Ath5k from today's compat-wireless triggers the following WARNing >> on hostapd startup. >> [ 1669.799870] ------------[ cut here ]------------ >> [ 1669.799934] WARNING: at kernel/softirq.c:141 local_bh_enable_ip+0x8b/0xb0() >> > > because ath5k calls ieee80211_beacon_get inside a spin_lock_irqsave() > and this is WARN_ON_ONCE(in_irq() || irqs_disabled). > > >> [ 1669.799982] Hardware name: >> [ 1669.800023] Modules linked in: ath5k mac80211 ath cfg80211 >> [ 1669.800192] Pid: 24862, comm: hostapd Not tainted 2.6.30.2 #3 >> [ 1669.800238] Call Trace: >> [ 1669.800287] [<ffffffff80248e3b>] ? local_bh_enable_ip+0x8b/0xb0 >> [ 1669.800340] [<ffffffff802432f8>] warn_slowpath_common+0x78/0xd0 >> [ 1669.800391] [<ffffffff8024335f>] warn_slowpath_null+0xf/0x20 >> [ 1669.800441] [<ffffffff80248e3b>] local_bh_enable_ip+0x8b/0xb0 >> [ 1669.800493] [<ffffffff807e0fef>] _spin_unlock_bh+0xf/0x20 >> [ 1669.800564] [<ffffffffa0040b92>] ieee80211_beacon_get+0x2c2/0x2d0 [mac80211] >> > > I guess this is the first victim of spin_lock_bh conversion? > > I just booted with compat-wireless-2009-07-30 built against 2.6.27.26 and am also seeing: ------------[ cut here ]------------ WARNING: at kernel/softirq.c:136 _local_bh_enable_ip+0x2f/0x7c() Modules linked in: lm90 hwmon scx200_acb i2c_core bridge stp llc dummy ath5k mac80211 ath cfg80211 rfkill_backport dahdi_dummy dahdi sha512_generic sha256_generic deflate zlib_deflate arc4 ecb sha1_generic blowfish des_generic cbc cryptosoft cryptodev(P) ocf(P) geodewdt geode_rng geode_aes crypto_blkcipher via_rhine rtc Pid: 1615, comm: hostapd Tainted: P 2.6.27.26-astlinux #1 [<c0116739>] warn_on_slowpath+0x40/0x63 [<c0127c01>] hrtimer_forward+0xe2/0xfe [<c01ccf78>] rb_insert_color+0x8c/0xad [<c0127d69>] enqueue_hrtimer+0xc8/0xd3 [<c0112014>] calc_delta_fair+0x16/0x24 [<c0249cd1>] __alloc_skb+0x4b/0x108 [<d0920dfb>] ieee80211_beacon_add_tim+0x4f/0x111 [mac80211] [<c011a194>] _local_bh_enable_ip+0x2f/0x7c [<d0921167>] ieee80211_beacon_get+0xe9/0x262 [mac80211] [<d08ed5f5>] ath5k_beacon_update+0x2b/0x1a5 [ath5k] [<c02a2cfb>] schedule_timeout+0x13/0x8f [<d08ef81a>] ath5k_bss_info_changed+0x118/0x16e [ath5k] [<d08ef702>] ath5k_bss_info_changed+0x0/0x16e [ath5k] [<d091060d>] ieee80211_bss_info_change_notify+0x141/0x151 [mac80211] [<d091bc2e>] ieee80211_config_beacon+0x142/0x153 [mac80211] [<d091c0b3>] ieee80211_add_beacon+0x0/0x1c [mac80211] [<d08ce6ee>] nl80211_addset_beacon+0x13f/0x171 [cfg80211] [<c0262915>] genl_rcv_msg+0x13a/0x154 [<c02627db>] genl_rcv_msg+0x0/0x154 [<c026073d>] netlink_rcv_skb+0x2d/0x72 [<c02621c7>] genl_rcv+0x14/0x17 [<c0260605>] netlink_unicast+0xd1/0x125 [<c02613fb>] netlink_sendmsg+0x1ee/0x1fb [<c02445ec>] __sock_sendmsg+0x20/0x24 [<c0245331>] sock_sendmsg+0x95/0xad [<c0125714>] autoremove_wake_function+0x0/0x2b [<c0112014>] calc_delta_fair+0x16/0x24 [<c0112266>] __dequeue_entity+0x1f/0x71 [<c013ab79>] page_count+0x8/0x14 [<c013aca6>] get_pageblock_flags_group+0xf/0x50 [<c024b551>] verify_iovec+0x3e/0x6d [<c02454d6>] sys_sendmsg+0x18d/0x1ed [<c0113a7b>] __wake_up+0x1d/0x45 [<c0113a93>] __wake_up+0x35/0x45 [<c0113a7b>] __wake_up+0x1d/0x45 [<c0113a93>] __wake_up+0x35/0x45 [<c024dc8e>] dev_name_hash+0x13/0x42 [<c024dc8e>] dev_name_hash+0x13/0x42 [<c024dcec>] __dev_get_by_name+0x2f/0x39 [<c02484a4>] sk_alloc+0x30/0x36 [<c011a1d7>] _local_bh_enable_ip+0x72/0x7c [<c0246dd0>] lock_sock_nested+0xb1/0xb8 [<c011a1d7>] _local_bh_enable_ip+0x72/0x7c [<c0246377>] sys_socketcall+0x15b/0x193 [<c0152703>] sys_close+0x75/0xc5 [<c01038b6>] syscall_call+0x7/0xb [<c02a0000>] pci_read_bridge_bases+0x273/0x298 ======================= ---[ end trace 5a73e54cdc253a36 ]--- I'll try again after an update fixing this (backing it out?) gets posted. BTW: Where does scripts/markup_oops.pl live? -Philip -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
