Date: Fri, 23 May 2003 12:15:28 -0400 (EDT) From: Andre Guibert de Bruet <andy@siliconlandmark.com> To: Robert Watson <rwatson@freebsd.org> Cc: current@freebsd.org Subject: Re: USB CF Reader causes Fatal trap 12 Message-ID: <20030523121030.Y75651@alpha.siliconlandmark.com> In-Reply-To: <20030516132126.P28986@alpha.siliconlandmark.com> References: <Pine.NEB.3.96L.1030516131352.24024a-100000@fledge.watson.org> <20030516132126.P28986@alpha.siliconlandmark.com>
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Hi, I've updated the card reader's firmware, cvsup'ed source and rebuilt kernel and can no longer reproduce this. Regards, > Andre Guibert de Bruet | Enterprise Software Consultant > > Silicon Landmark, LLC. | http://siliconlandmark.com/ > On Fri, 16 May 2003, Andre Guibert de Bruet wrote: > "It" was the dump, yes. I accidentally deleted the dump and I'm off to > work at the moment, so I won't be able to produce another dump until later > today. Anyway, here are the source code offsets for the functions listed > in the trace: [...snip...] > On Fri, 16 May 2003, Robert Watson wrote: > > > On Fri, 16 May 2003, Andre Guibert de Bruet wrote: > > > > > No go on the backtrace. It appears as if it got corrupted somehow... > > > > I assume "it" here is the dump. You can still generate source code > > offsets using the function+offset values in the ddb trace by attaching gdb > > to the debugging kernel on disk and using: > > > > (kgdb) l *g_disk_access+0xa9 > > ... > > (kgdb) l *g_access_rel+0x20e > > ... > > > > And so on. No local variable inspection, but helps if your source code > > and build options aren't quite in sync with the ones of the person doing > > the debugging. > > > > > On Fri, 16 May 2003, Andre Guibert de Bruet wrote: > > > > > > > The reader I'm using is a Dazzle 6 in 1 unit. It has worked flawlessly up > > > > until last night's USB commit. At last boot, it came up as: > > > > > > > > > umass0: SCM Microsystems Inc. eUSB ORCA Quad Reader, rev 1.10/5.07, addr 4 > > > > > da0 at umass-sim0 bus 0 target 0 lun 0 > > > > > da0: <eUSB Compact Flash 5.07> Removable Direct Access SCSI-2 device > > > > > da0: 1.000MB/s transfers > > > > > da0: 122MB (250368 512 byte sectors: 64H 32S/T 122C) > > > > > > > > Upon connection, at the console: > > > > > > > > [... some messages that i couldn't copy and paste in time...] > > > > umass0: Invalid CSW: tag 0 should be 10 > > > > (da0:umass-sim0:0:0:0): AutoSense Failed > > > > (da0:umass-sim0:0:0:0): removing device entry > > > > Opened disk da0 -> 5 > > > > > > > > Fatal trap 12: page fault while in kernel mode > > > > cpuid = 0; lapic.id = 00000000 > > > > fault virtual address = 0x1c > > > > fault code = supervisor read, page not present > > > > instruction pointer = 0x8:0xc01daf29 > > > > stack pointer = 0x10:0xe42e8b5c > > > > frame pointer = 0x10:0xe42e8b84 > > > > 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 = 2 (g_event) > > > > kernel: type 12 trap, code=0 > > > > Stopped at g_disk_access+0xa9: cmpl $0,0x1c(%esi) > > > > db> call doadump > > > > Dumping 3583 MB > > > > ata3: resetting devices .. > > > > done > > > > 16 32 48 64 80 [... snip ...] 3568 > > > > Dump complete > > > > 0xf > > > > > > > > db> tr > > > > g_disk_access(caafdd80,1,0,0,0) at g_disk_access+0xa9 > > > > g_access_rel(cb598b80,1,0,0,e42e8c30) at g_access_rel+0x20e > > > > g_slice_new(c0406b20,8,caafdd80,e42e8c2c,e42e8c30) at g_slice_new+0xdb > > > > g_bsd_taste(c0406b20,caafdd80,0,102,caafdd00) at g_bsd_taste+0xa9 > > > > g_new_provider_event(caafdd80,0,c03a3701,b2,66666667) at g_new_provider_event+0x9c > > > > one_event(e42e8d14,c01dd7a5,c041b30c,0,4c) at one_event+0x20a > > > > g_run_events(c041b30c,0,4c,c03a3a23,a) at g_run_events+0x8 > > > > g_event_procbody(0,e42e8d48,c03a5629,2f8,c60f7e40) at g_event_procbody+0x45 > > > > fork_exit(c01dd760,0,e42e8d48) at fork_exit+0xc0 > > > > fork_trampoline() at fork_trampoline+0x1a > > > > --- trap 0x1, eip = 0, esp = 0xe42e8d7c, ebp = 0 --- > > > > > > > > GDB trace to follow. Stay tuned...
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