Date: Wed, 03 Jun 2020 21:15:53 +0000 From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: "Alexander V. Chernikov" <melifaro@ipfw.ru> Cc: "FreeBSD Net" <net@freebsd.org> Subject: Re: panic: starting DAD on non-tentative address 0xfffff800034a5800, Message-ID: <1161CE2A-5128-4056-BB87-6D2D7B1CBAD3@lists.zabbadoz.net> In-Reply-To: <354051591215122@mail.yandex.ru> References: <EA6F6688-66A1-48D7-A2C7-7EB01E37C844@lists.zabbadoz.net> <354051591215122@mail.yandex.ru>
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On 3 Jun 2020, at 20:15, Alexander V. Chernikov wrote: > 03.06.2020, 11:46, "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>: >> Hi, >> >> got this with HEAD from a few days ago, just in case it rings a bell >> with someone. > I'm curious what are the conditions. Was it the first "up" for the > interface? > It looks like we're not locking anything in nd6_dad_timer, so > potentially if one configures IPv6 address, waits for most of the dad > timer, then do down/up, this can potentially happen. I cannot really say. I plugged an unsupported interface into USB; there were two other wifi dongles on the USB hub. When I came back to the machine console later in the day, I found this. Not sure if it was related. >> Otherwise I’ll go investigate when it happens again; I’ll try to >> setup netdump to get more information. >> >> panic: starting DAD on non-tentative address 0xfffff800034a5800 >> cpuid = 1 >> time = 1500939739 >> KDB: stack backtrace: >> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame >> 0xfffffe003b65a690 >> vpanic() at vpanic+0x182/frame 0xfffffe003b65a6e0 >> panic() at panic+0x43/frame 0xfffffe003b65a740 >> nd6_dad_start() at nd6_dad_start+0x3bb/frame 0xfffffe003b65a7e0 >> in6_if_up() at in6_if_up+0x62/frame 0xfffffe003b65a820 >> if_up() at if_up+0x69/frame 0xfffffe003b65a850 >> ifhwioctl() at ifhwioctl+0xbf8/frame 0xfffffe003b65a8d0 >> ifioctl() at ifioctl+0x3ac/frame 0xfffffe003b65a9a0 >> kern_ioctl() at kern_ioctl+0x27b/frame 0xfffffe003b65aa00 >> sys_ioctl() at sys_ioctl+0x127/frame 0xfffffe003b65aad0 >> amd64_syscall() at amd64_syscall+0x140/frame 0xfffffe003b65abf0 >> fast_syscall_common() at fast_syscall_common+0x101/frame >> 0xfffffe003b65abf0 >> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80047cd8a, rsp = >> 0x7fffffffe258, rbp = 0x7fffffffe2b0 --- >> KDB: enter: panic >> [ thread pid 12247 tid 100088 ] >> Stopped at kdb_enter+0x37: movq $0,0x10c9ad6(%rip) >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to >> "freebsd-net-unsubscribe@freebsd.org"
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