Date: Wed, 20 Jun 2007 11:23:38 +0400 (MSD) From: "R.Mahmatkhanov" <cvs-src@yandex.ru> To: imp@bsdimp.com Cc: freebsd-usb@freebsd.org, cvs-src@yandex.ru Subject: Re: Panic on post-freeze current with ucom Message-ID: <4678D5FA.000001.31958@pantene.yandex.ru> In-Reply-To: <20070620.011451.1021576727.imp@bsdimp.com> References: <46790374.8040903@yandex.ru> <20070620.011451.1021576727.imp@bsdimp.com>
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>In message: <46790374.8040903@yandex.ru> > "R.Mahmatkhanov" <cvs-src@yandex.ru> writes: >: Good Day. >: >: I just move to latest -current/i386 after the code freeze. And i catch >: 100% reproduceble panic condition. It happens when i plug my mobile >: phone to USB port. How it does: >: >: ucom0: <CURITEL Incorporated CURITEL HX-550C USB Modem, class 2/0, rev >: 1.10/0.00, addr 2> on uhub1 >: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 >: fault virtual address = 0x4 >: fault code = supervisor read, page not present >: instruction pointer = 0x20: 0xc06ca396 >: stack pointer = 0x28: 0xdd30a760 >: frame pointer = 0x28: 0xdd30a760 >: code segment = base 0x0, limit 0xfffff, type = 0x1b, DPL 0, pres 1, >: = def32 1, gran 1 >: processor eflags = interrupt enabled, resume; IOPL = 0 >: current process = 28 (usb1) >: [thread pid 28 tid 100023] >: Stopped at usb_get_interface_descruptor+0x6: movl 0x4(%eax), %eax > >This looks like a null modem dereference. Which driver is causing >this? > >Warner It's umodem.
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