Date: Thu, 2 Oct 2003 09:47:04 -0700 (PDT) From: Nate Lawson <nate@root.org> To: Jacky Xie <xjrcool@hotmail.com> Cc: freebsd-scsi@freebsd.org Subject: Re: Some necessity running scsi_target that I have observed ( 10+ times ) Message-ID: <20031002094511.U88462@root.org> In-Reply-To: <LAW14-F10NPPzQT456U00006194@hotmail.com>
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On Mon, 29 Sep 2003, Jacky Xie wrote: > 1. data transfer: total about 300GBytes - 1000GBytes) before scsi_target > crash. That's not too bad for "example" code. :-) > 2. machine running scsi_target crashed in targdone(): > > Fatal trap 12: page fault while in kernel mode > fatal virtual address = 0x2a > fatal code = supervisor write, page not present > instructioin pointer = 0x8:0xe12c3a8 > stack pointer = 0x10: 0xd49a7d48 > frame pointer = 0x10: 0xd49a7d50 > code segment = base 0x0, limit 0xfffff, type 0x16 > DPL 0, pres 1, def32 1, gran 1 > processor flags = trace trap, interrupt enabled, kernel IOPL=0 > current process = 26962(scsi_target) > interrupt mask = > kernel: type 12 trap, code = 0 > Breakpoint at targdone + 0x84: movl %eax, 0x20 (%edx) It's hard to tell what is happening from just this message. Are you using 4.x or 5.x? There have been some changes recently by simokawa-san to stabilize the usermode of scsi_target in 5.x. They will eventually be MFCd. > 3. machine running "dd" to read/write "FreeBSD Emulated Disk" -- /dev/da0 > report kernel warnings: > > Sep 26 12:25:37 IA /kernel: (probe0:ahc0:0:5:0): SCB 0xe - timed out This is a result of the target panic above. -Natehome | help
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