Date: Sat, 8 Oct 2011 08:35:01 -0600 From: PseudoCylon <moonlightakkiy@yahoo.ca> To: Adrian Chadd <adrian@freebsd.org>, Edgar Martinez <emartinez@kbcnetworks.com> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: LOR - COM LOCK Message-ID: <CAFZ_MY%2BY4yQxG4aeO06-pG=TybKGBqwfLjtqNT2SqLbJEJeXqQ@mail.gmail.com>
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> But I wonder whether there's a bigger problem somewhere lurking in > that older HAL code. Hrm! Could be. (might not be a driver problem.) I've got lock order reversal: 1st 0xffffff8000a257d0 run0_node_lock (run0_node_lock) @ /usr/src/sys/net80211/ieee80211_ioctl.c:1326 2nd 0xffffff8000a24018 run0_com_lock (run0_com_lock) @ /usr/src/sys/net80211/ieee80211_node.c:2486 (line numbers are of old 9-CUREENT but referring the same lock) KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x81e _mtx_lock_flags() at _mtx_lock_flags+0x78 ieee80211_node_leave() at ieee80211_node_leave+0x80 setmlme_common() at setmlme_common+0x27b ieee80211_ioctl_setmlme() at ieee80211_ioctl_setmlme+0x7e ieee80211_ioctl_set80211() at ieee80211_ioctl_set80211+0xaba in_control() at in_control+0x1ff ifioctl() at ifioctl+0x1100 kern_ioctl() at kern_ioctl+0xc5 ioctl() at ioctl+0xf0 syscallenter() at syscallenter+0x1b5 syscall() at syscall+0x4c Xfast_syscall() at Xfast_syscall+0xe2 Also, I've got lock order reversal: 1st 0xffffff8000a257d0 run0_node_lock (run0_node_lock) @ /usr/src/sys/net80211/ieee80211_ioctl.c:1326 2nd 0xffffff8000a19328 run0 (network driver) @ /mnt/share/home/AK/FreeBSD/modules/usb/run/../../../../mnt/dev/usb/wlan/if_run.c:3409 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x81e _mtx_lock_flags() at _mtx_lock_flags+0x78 run_raw_xmit() at run_raw_xmit+0x57 ieee80211_send_mgmt() at ieee80211_send_mgmt+0x4d5 domlme() at domlme+0x95 setmlme_common() at setmlme_common+0x27b ieee80211_ioctl_setmlme() at ieee80211_ioctl_setmlme+0x7e ieee80211_ioctl_set80211() at ieee80211_ioctl_set80211+0xaba in_control() at in_control+0x1ff ifioctl() at ifioctl+0x1100 kern_ioctl() at kern_ioctl+0xc5 ioctl() at ioctl+0xf0 syscallenter() at syscallenter+0x1b5 syscall() at syscall+0x4c Xfast_syscall() at Xfast_syscall+0xe2 Here are suspicious part (Though, I don't have any solutions.) setmlme_common() at setmlme_common+0x27b ieee80211_ioctl_setmlme() at ieee80211_ioctl_setmlme+0x7e ieee80211_ioctl_set80211() at ieee80211_ioctl_set80211+0xaba in_control() at in_control+0x1ff AK
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