Date: Thu, 26 Nov 2009 15:21:42 +0100 From: Christian Nygaard <christiannygaard@gmail.com> To: bugbusters@FreeBSD.org Subject: I was unable to report a zfs bug, incorrect confirmation code Message-ID: <4d4321660911260621k1154c84cy17670dd5e7688ced@mail.gmail.com>
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Your Electronic Mail Address: christiannygaard@gmail.com Your Name: Christian Nygaard One line summary of the problem: zfs removing a zfs storage file causes kernel panic category: amd64 Which FreeBSD Release You Are Using: 8.0 Environment (output of "uname -a" on the problem machine): FreeBSD freebsd 8.0-RELEASE FreeBSD 8.0-RELEASE #0: Sat Nov 21 15:02:08 UTC 2009 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 Full Description: Creating a zfs test pool on file based, then removing one of the underlying files and doing a zpool scrub causes kernel panic. How to repeat the problem: To reproduce create two files, then zpool tank pool on files # dd if=test1 count=100k bs=1k # dd if=test2 count=100k bs=1k # zpool create tank mirror /root/test1 /root/test2 now remove file /root/test2, this causes a kernel panic # rm /root/test2 # zpool scrub tank Kernel Panic Fatal trap 12: page fault while in kernel mode cpuid = 1; apic id = 01 fault virtual address = 0x0 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff810735bd stack pointer = 0x28:0xffffff803e778800 frame pointer = 0x28:0xffffff803e7788c0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 36 (txg_thread_enter) trap number = 12 panic: page fault cpuid = 1 Uptime: 3m31s Cannot dump. Device not defined or unavailable. Automatic reboot in 15 seconds - press a key on the console to aborthome | help
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