Date: Sat, 27 Aug 2011 15:31:30 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r225216 - user/adrian/if_ath_tx/sys/dev/ath Message-ID: <201108271531.p7RFVUpr011204@svn.freebsd.org>
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Author: adrian Date: Sat Aug 27 15:31:30 2011 New Revision: 225216 URL: http://svn.freebsd.org/changeset/base/225216 Log: Add more things to look at Modified: user/adrian/if_ath_tx/sys/dev/ath/README Modified: user/adrian/if_ath_tx/sys/dev/ath/README ============================================================================== --- user/adrian/if_ath_tx/sys/dev/ath/README Sat Aug 27 15:28:57 2011 (r225215) +++ user/adrian/if_ath_tx/sys/dev/ath/README Sat Aug 27 15:31:30 2011 (r225216) @@ -198,6 +198,69 @@ Stuff to do to the rate control code The rate selection stuff doesn't do this -now-, but it may be useful later. +Problems in net80211 (ie, not necessarily this branch) +------------------------------------------------------ + +ieee80211_node.c:1940 is within: + +static void +ieee80211_timeout_stations(struct ieee80211com *ic) + +This initial lock: IEEE80211_NODE_LOCK(nt); + +lock order reversal: + 1st 0xc08316cc ath0_node_lock (ath0_node_lock) @ /data/freebsd/mips/if_ath_tx/src/sys/net80211/ieee80211_node.c:1940 + 2nd 0xc0830014 ath0_com_lock (ath0_com_lock) @ /data/freebsd/mips/if_ath_tx/src/sys/net80211/ieee80211_power.c:295 +KDB: stack backtrace: +db_trace_thread+30 (?,?,?,?) ra 8038e35c sp c077da90 sz 24 +db_trace_self+1c (?,?,?,?) ra 80074c1c sp c077daa8 sz 24 +80074be8+34 (?,?,?,?) ra 801d1ba4 sp c077dac0 sz 416 +kdb_backtrace+44 (?,?,?,?) ra 801e9660 sp c077dc60 sz 24 +801e962c+34 (?,?,?,?) ra 801ea2a4 sp c077dc78 sz 32 +witness_checkorder+954 (?,?,?,?) ra 8018a740 sp c077dc98 sz 88 +_mtx_lock_flags+c4 (?,?,?,?) ra 802a5a30 sp c077dcf0 sz 48 +802a59a8+88 (?,?,?,?) ra 8029e4a8 sp c077dd20 sz 40 +8029e444+64 (?,?,?,?) ra 8029d4d8 sp c077dd48 sz 32 +ieee80211_node_timeout+1a4 (?,?,?,?) ra 801b0300 sp c077dd68 sz 64 +softclock+298 (?,?,?,?) ra 80172860 sp c077dda8 sz 88 +intr_event_execute_handlers+158 (?,?,?,?) ra 80173868 sp c077de00 sz 40 +8017375c+10c (?,?,?,?) ra 8016fb64 sp c077de28 sz 48 +fork_exit+a8 (?,?,?,?) ra 80386aa0 sp c077de58 sz 40 +fork_trampoline+10 (?,?,?,?) ra 0 sp c077de80 sz 0 + +A kernel panic, when a station is downed; + +wlan0: [8c:7b:9d:d6:65:ba] station with aid 1 leaves +ath0: ath_addba_stop: called +ath0: ath_tx_tid_pause: paused = 1 +ath0: ath_tx_cleanup: TID 0: called +ath0: ath_tx_cleanup: TID 0: cleanup needed: 2 packets +ath0: ath_tx_tid_cleanup: node 0xc08e8000: cleaning up +Trap cause = 2 (TLB miss (load or instr. fetch) - kernel mode) +[ thread pid 0 tid 100024 ] +Stopped at _mtx_lock_flags+0x58: lw v1,16(a0) +db> bt +Tracing pid 0 tid 100024 td 0x80a07600 +db_trace_thread+30 (?,?,?,?) ra 80072dc0 sp c766f7f8 sz 24 +80072cac+114 (8018a6d4,?,ffffffff,?) ra 8007237c sp c766f810 sz 32 +80071ff4+388 (?,?,?,?) ra 80072500 sp c766f830 sz 168 +db_command_loop+70 (?,?,?,?) ra 80074bc4 sp c766f8d8 sz 24 +80074ad0+f4 (?,?,?,?) ra 801d1818 sp c766f8f0 sz 424 +kdb_trap+104 (?,?,?,?) ra 80382910 sp c766fa98 sz 40 +trap+e58 (?,?,?,?) ra 8037a5e0 sp c766fac0 sz 168 +MipsKernGenException+134 (c08ec3e4,0,803e053c,10c9) ra 8018a6d4 sp c766fb68 sz 200 +_mtx_lock_flags+58 (?,?,?,?) ra 80079ea0 sp c766fc30 sz 48 +ath_tx_update_ratectrl+5c (?,?,?,?) ra 80088644 sp c766fc60 sz 56 +ath_tx_aggr_comp+660 (?,?,0,?) ra 8007dcc4 sp c766fc98 sz 232 +8007d7e8+4dc (?,?,?,?) ra 8007e56c sp c766fd80 sz 72 (if_ath.c:4326) - processq? +8007e4e4+88 (?,?,?,?) ra 801dfb24 sp c766fdc8 sz 48 (if_ath.c:4491) - tx tasklet +801dfa3c+e8 (?,?,?,?) ra 801e05ec sp c766fdf8 sz 56 (subr_taskqueue.c:308) +taskqueue_thread_loop+60 (?,?,?,?) ra 8016fb64 sp c766fe30 sz 40 +fork_exit+a8 (?,?,?,?) ra 80386aa0 sp c766fe58 sz 40 +fork_trampoline+10 (?,?,?,?) ra 0 sp c766fe80 sz 0 +pid 0 + + Fixed issues: -------------
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