From: Wu Fengguang <wfg@mail.ustc.edu.cn>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, clameter@sgi.com
Subject: Re: [PATCH 02/16] radixtree: sync with mainline
Date: Mon, 5 Dec 2005 12:05:35 +0800 [thread overview]
Message-ID: <20051205040535.GA5597@mail.ustc.edu.cn> (raw)
In-Reply-To: <20051204155750.3972c3df.akpm@osdl.org>
[-- Attachment #1: Type: text/plain, Size: 910 bytes --]
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
[-- Attachment #2: print-panic-messages-slowly-on-i386.patch --]
[-- Type: text/plain, Size: 1203 bytes --]
--- 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..
[-- Attachment #3: find_get_page_panic.png --]
[-- Type: image/png, Size: 14636 bytes --]
[-- Attachment #4: find_get_page_panic2.png --]
[-- Type: image/png, Size: 17413 bytes --]
next prev parent reply other threads:[~2005-12-05 3:50 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-03 7:14 [PATCH 00/16] Adaptive read-ahead V9 Wu Fengguang
2005-12-03 7:14 ` [PATCH 01/16] mm: delayed page activation Wu Fengguang
2005-12-04 12:11 ` Nikita Danilov
2005-12-04 13:48 ` Wu Fengguang
2005-12-04 15:03 ` Nikita Danilov
2005-12-04 15:37 ` Help!Unable to handle kernel NULL pointer tony
2005-12-04 19:10 ` [PATCH 01/16] mm: delayed page activation Peter Zijlstra
2005-12-05 1:48 ` Wu Fengguang
2005-12-06 17:55 ` Nikita Danilov
2005-12-07 1:42 ` Wu Fengguang
2005-12-07 9:46 ` Andrew Morton
2005-12-07 10:36 ` Wu Fengguang
2005-12-07 12:44 ` Nikita Danilov
2005-12-07 13:53 ` Wu Fengguang
2005-12-03 7:14 ` [PATCH 02/16] radixtree: sync with mainline Wu Fengguang
2005-12-04 23:57 ` Andrew Morton
2005-12-05 1:43 ` Wu Fengguang
2005-12-05 4:05 ` Wu Fengguang [this message]
2005-12-05 17:22 ` Christoph Lameter
2005-12-05 10:44 ` Wu Fengguang
2005-12-05 17:24 ` Christoph Lameter
2005-12-06 2:23 ` Wu Fengguang
2005-12-03 7:14 ` [PATCH 03/16] radixtree: look-aside cache Wu Fengguang
2005-12-03 7:14 ` [PATCH 04/16] readahead: some preparation Wu Fengguang
2005-12-03 7:14 ` [PATCH 05/16] readahead: call scheme Wu Fengguang
2005-12-03 7:14 ` [PATCH 06/16] readahead: parameters Wu Fengguang
2005-12-03 7:14 ` [PATCH 07/16] readahead: state based method Wu Fengguang
2005-12-03 7:14 ` [PATCH 08/16] readahead: context " Wu Fengguang
2005-12-03 7:14 ` [PATCH 09/16] readahead: read-around method for mmap file Wu Fengguang
2005-12-03 7:14 ` [PATCH 10/16] readahead: other methods Wu Fengguang
2005-12-03 7:14 ` [PATCH 11/16] readahead: detect and rescue live pages Wu Fengguang
2005-12-03 7:14 ` [PATCH 12/16] readahead: events accounting Wu Fengguang
2005-12-03 7:14 ` [PATCH 13/16] readahead: laptop mode support Wu Fengguang
2005-12-03 7:14 ` [PATCH 14/16] readahead: disable look-ahead for loopback file Wu Fengguang
2005-12-03 7:14 ` [PATCH 15/16] readahead: nfsd support Wu Fengguang
2005-12-03 7:15 ` [PATCH 16/16] io: prevent too much latency in the read-ahead code Wu Fengguang
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