Hello, During upgrading world and kernel from r26939 to r270837, I got the following problem. a) the arch is i386 b) kernel is of r270837, userland is of r26939 (make kernel is done and rebooted, make installworld not yet). c) booting in single user mode is OK. d) during startup of multi-user mode, when dhclient is run, the following message appears, and the system freezes: Starting devd. wlan0: link state changed to UP Starting webcamd. Attached to ugen4.2[0] Starting webcready running for ugen4.2.0 /usr/local/etc/rc.d/webcamd: WARNING: failed to start webcamd Starting dhclient. DHCPREQUEST on wlan0 to 255.255.255.255 port 67 DHCPACK from 192.168.8.2 Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex so_rcv (so_rcv) r = 0 (0xc713f078) locked _at_ /usr/src/sys/kern/kern_event.c:2005 KDB stack backtrace: rapper+0x2d/frame 0xe8f42710 kdb_backtrace(c11aaf80,0,c713f078,c119a9e8,7d5,...) at 0xc0b4b160 = kdb_backtrace+0x30/frame 0xe8f42778 witness_warn(5,0,c136b0a0,76fb000,c1833d58,...) at 0xc8b68a52 = witness_warn+0x402/frame 0xe8f427c8 trap_pfault(18,3fd,c0dcc2d0,c1f64a80,c75fa000,...) at 0xc102f46b = trap_pfault+0x5b/frame 0xe8f42840 trap(e8f42988) at 0xc102edcf = trap+0x6cf/frame 0xe8f4297c calltrap() at 0xc1017c4c = calltrap+0x6/frame 0xe8f4297c filt_soread(c75f7828,0,c119a9e8,48d,0,...) at 0xc0b9837d = filt_soread+0x9d/frame 0xe8f429f0 kqueue_register(c6f59310,1,1,4f5,0,...) at 0xc0ad1457 = kqueue_register+0x807/frame 0xe8f42a68 kern_kevent(c6f59310,7,12c217ce1 = Xint0x80), eip = instruction poi = 0x28:0xe8f429f0 fff, type 0x1b DHCPREQUEST on wlan0 to 255.255.255.255 port 67 DHCPACK from 192.168.8.2 e) kernel configuration differs from GENERIC on the following point options VIMAGE options DDB_NUMSYM nocpu I486_CPU nooptions VESA Does the problem come from kernel and userland not in sync? or there are other problems? Is there any workaround? Attached is the dmesg of r270837 on the machine.
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