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SubjectRe: [PATCH 02/16] radixtree: sync with mainline
On Sun, Dec 04, 2005 at 03:57:50PM -0800, Andrew Morton wrote:
> Wu Fengguang <wfg@mail.ustc.edu.cn> wrote:
> >
> > [PATCH] radix-tree: Remove unnecessary indirections and clean up code
> >
> > is only partially merged into -mm tree. This patch completes it.
>
> md: autorun ...
> md: ... autorun DONE.
> Unable to handle kernel paging request at virtual address 8000003c
> printing eip:
> c013e16f
> *pde = 00000000
> Oops: 0000 [#1]
> SMP
> Modules linked in:
> CPU: 1
> EIP: 0060:[<c013e16f>] Not tainted VLI
> EFLAGS: 00010086 (2.6.15-rc5-mm1)
> EIP is at find_get_page+0x2e/0x4e

It is reproduced here on linux-2.6.15-rc3-mm1 with this single patch.
I'm using qemu, and its screen outputs are not accessible. So I added some
delays to the dump code, and grabbed two screen shots.

Wu
--- linux.orig/arch/i386/kernel/traps.c
+++ linux/arch/i386/kernel/traps.c
@@ -158,6 +158,7 @@ static inline unsigned long print_contex
printk(" [<%08lx>] ", addr);
print_symbol("%s", addr);
printk("\n");
+ mdelay(1000);
ebp = *(unsigned long *)ebp;
}
#else
@@ -167,6 +168,7 @@ static inline unsigned long print_contex
printk(" [<%08lx>]", addr);
print_symbol(" %s", addr);
printk("\n");
+ mdelay(1000);
}
}
#endif
@@ -257,6 +259,7 @@ void show_registers(struct pt_regs *regs
smp_processor_id(), 0xffff & regs->xcs, regs->eip,
print_tainted(), regs->eflags, system_utsname.release);
print_symbol("EIP is at %s\n", regs->eip);
+ mdelay(5000);
printk("eax: %08lx ebx: %08lx ecx: %08lx edx: %08lx\n",
regs->eax, regs->ebx, regs->ecx, regs->edx);
printk("esi: %08lx edi: %08lx ebp: %08lx esp: %08lx\n",
@@ -265,6 +268,7 @@ void show_registers(struct pt_regs *regs
regs->xds & 0xffff, regs->xes & 0xffff, ss);
printk("Process %s (pid: %d, threadinfo=%p task=%p)",
current->comm, current->pid, current_thread_info(), current);
+ mdelay(5000);
/*
* When in-kernel, we also print out the stack and code at the
* time of the fault..[unhandled content-type:image/png][unhandled content-type:image/png]
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