Date: Thu, 5 Feb 2004 15:17:37 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: freebsd-current@freebsd.org Subject: Interrupts, ATAng, and wayward pointers, oh my! Message-ID: <20040205231737.GB17451@troutmask.apl.washington.edu>
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Ladies and Gents,
I have the following (hand transcript) panici during boot from
a kernel built from 1 hour old sources:
ad0: 38154MB <IC25N040ATC05-0> [77520/16/63] at ata0-master UDMA100
ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
acd0: DVDROM <HL-DT-STDVD-ROM GDR8081N> at ata1-master WDMA2
Mounting root from ufs:/dev/ad0s3a
Memory modified after free 0xc407a800(508) val=ff00ff00 @ 0xc407a800
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xff00ff20
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc05b945a
stack pointer = 0x10:0xd84d1984
frame pointer = 0x10:0xd84d19a0
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 = 49 (sh)
kernel: type 12 trap, code=0
stopped at mtrash_ctor+0x3a: movl 0x20(%eax),%eax
db> trace
mtrash_ctor(c407a800,200,0) at mtrash_ctor+0x3a
uma_zalloc_arg(c0c45cc0,0,2) at uma_zalloc_arg+0x169
malloc(188,c0650d00,2,3,c3fe27e0) at malloc+0xb7
elf32_load_file(c41c2528,d4cb20f4,d84d1ab0,d84d1bd0,1000) at elf32_load_file+0x51
exec_elf32_imgact(d84d1b94,c051fb78,c067d450,0,0) at exec_elf32_imgact+0x4c7
kern_execve(c3fe27e0,8065098,8065084,8065094,0) at kern_execve+0x33a
execve(c3fe27e0,d84d1d14,3,0,286) at execve+0x18
syscall(2f,2f,2f,8065098,8065084) at syscall+0x217
Xint0x80_syscall() at Xint80_syscall+0x1d
--- syscall (59, FreeBSD ELF32, execve), eip = 0x2811ca6f, esp=0xbfbfec8c, ebp = 0xbfbfecb8
db>
I can't get a core dump.
--
Steve
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