Date: Tue, 23 Oct 2007 10:30:02 GMT From: Alexander Logvinov <ports@logvinov.com> To: freebsd-usb@FreeBSD.org Subject: Re: usb/107935: [uplcom] [panic] panic while accessing /dev/cuaU0 Message-ID: <200710231030.l9NAU2bm056478@freefall.freebsd.org>
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The following reply was made to PR usb/107935; it has been noted by GNATS. From: Alexander Logvinov <ports@logvinov.com> To: bug-followup@FreeBSD.org, ports@logvinov.com, imp@bsdimp.com, mirya@matrix.ua Cc: Subject: Re: usb/107935: [uplcom] [panic] panic while accessing /dev/cuaU0 Date: Tue, 23 Oct 2007 20:18:49 +1000 (YAKST) I have found same problem in kern/95512. So in 7.0-BETA1: # ps ax | grep ttyU0 850 ?? I 0:00,00 /usr/libexec/getty std.57600 ttyU0 # minicom LANG/ja LANG/ko LANG/ru minicom: Cannot open /dev/cuaU0: Input/output error # minicom Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x1c fault code = supervisor read, page not present instruction pointer = 0x20:0xc06bf97d stack pointer = 0x28:0xd621ea70 frame pointer = 0x28:0xd621ea8c 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 = 925 (minicom) trap number = 12 panic: page fault cpuid = 0 Uptime: 3m3s Physical memory: 499 MB Dumping 60 MB: 45 29 13 #0 doadump () at pcpu.h:195 195 __asm __volatile("movl %%fs:0,%0" : "=r" (td)); (kgdb) bt #0 doadump () at pcpu.h:195 #1 0xc074ff67 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409 #2 0xc0750229 in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:563 #3 0xc0a131fc in trap_fatal (frame=0xd621ea30, eva=28) at /usr/src/sys/i386/i386/trap.c:872 #4 0xc0a13480 in trap_pfault (frame=0xd621ea30, usermode=0, eva=28) at /usr/src/sys/i386/i386/trap.c:785 #5 0xc0a13df5 in trap (frame=0xd621ea30) at /usr/src/sys/i386/i386/trap.c:463 #6 0xc09f9e1b in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #7 0xc06bf97d in uhci_softintr (v=0xc2ecc000) at /usr/src/sys/dev/usb/uhci.c:1280 #8 0xc06cbb12 in usb_schedsoftintr (bus=0xc2ecc000) at /usr/src/sys/dev/usb/usb.c:844 #9 0xc06bfbce in uhci_abort_xfer (xfer=0xc32f3000, status=Variable "status" is not available. ) at /usr/src/sys/dev/usb/uhci.c:2047 #10 0xc06bfc60 in uhci_device_bulk_abort (xfer=0xc32f3000) at /usr/src/sys/dev/usb/uhci.c:1967 #11 0xc06cf9a9 in usbd_abort_pipe (pipe=0xc34bdd80) at /usr/src/sys/dev/usb/usbdi.c:879 #12 0xc0ccbdc3 in ?? () #13 0xc34bdd80 in ?? () #14 0xd621eb0c in ?? () #15 0xc0ccc266 in ?? () #16 0x00000000 in ?? () #17 0xc0b4b640 in M_SEGMENT_init_sys_init () #18 0xd621eb68 in ?? () #19 0x00000016 in ?? () #20 0x00000016 in ?? () #21 0xc3119b00 in ?? () #22 0x802c7414 in ?? () #23 0xd621eb9c in ?? () #24 0xc079455d in ttioctl (tp=0x0, cmd=3270730752, data=0xd621eb68, flag=22) at tty.h:417 Previous frame inner to this frame (corrupt stack?)
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