From: Adrian Bunk <bunk@kernel.org>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [BUG 2.6.24-rc3-git6] SLUB's ksize() fails for size > 2048.
Date: Sun, 2 Dec 2007 17:13:25 +0100 [thread overview]
Message-ID: <20071202161325.GL15974@stusta.de> (raw)
In-Reply-To: <200712021939.HHH18792.FLQSOOtFOFJVHM@I-love.SAKURA.ne.jp>
On Sun, Dec 02, 2007 at 07:39:59PM +0900, Tetsuo Handa wrote:
> Hello.
>
> I can't pass memory allocated by kmalloc() to ksize()
> if it is allocated by SLUB allocator and
> size is larger than (I guess) PAGE_SIZE / 2.
>
> Regards.
>
> ---------- Kernel config (grep CONFIG_SLUB .config) ----------
> CONFIG_SLUB_DEBUG=y
> CONFIG_SLUB=y
> # CONFIG_SLUB_DEBUG_ON is not set
>
> ---------- Testing program (ksize_test.c) ----------
> #include <linux/module.h>
> #include <linux/slab.h>
>
> static int __init init_ksize_test(void)
> {
> void *p = kmalloc(2049, GFP_KERNEL);
> printk("ksize(%p) = %d\n", p, ksize(p));
> kfree(p);
> return -ENOMEM;
> }
>
> module_init(init_ksize_test)
>
> MODULE_LICENSE("GPL");
>
> ------------[ cut here ]------------
> kernel BUG at mm/slub.c:2562!
> invalid opcode: 0000 [#1] SMP
> Modules linked in: ksize_test
>
> Pid: 8473, comm: modprobe Not tainted (2.6.24-rc3-git6 #4)
> EIP: 0060:[<c01714a2>] EFLAGS: 00010246 CPU: 1
> EIP is at ksize+0x1b/0x4a
> EAX: 00000000 EBX: dd776000 ECX: c16721d0 EDX: 00000000
> ESI: e081b280 EDI: df3a396c EBP: dd595ea0 ESP: dd595ea0
> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> Process modprobe (pid: 8473, ti=dd595000 task=d347cd60 task.ti=dd595000)
> Stack: dd595eb8 e081e01a dd595eb8 c014010c ffffffff e08193e0 dd595fb0 c0150b18
> 00000000 00000000 00001866 00000000 dd4dac00 d347cd60 c14366ac 00000230
> 0000135c 0000000e dd4dac00 e081b280 00000000 00000000 00000000 00000000
> Call Trace:
> [<c0106008>] show_trace_log_lvl+0x1a/0x2f
> [<c01060b8>] show_stack_log_lvl+0x9b/0xa3
> [<c0106167>] show_registers+0xa7/0x178
> [<c010634c>] die+0x114/0x1f5
> [<c0417018>] do_trap+0x8a/0xa3
> [<c01066ec>] do_invalid_op+0x88/0x92
> [<c0416dea>] error_code+0x72/0x78
> [<e081e01a>] init_ksize_test+0x1a/0x40 [ksize_test]
> [<c0150b18>] sys_init_module+0x13d3/0x14ff
> [<c0104f7e>] sysenter_past_esp+0x5f/0xa5
> =======================
> Code: 8b 02 5d 84 c0 b8 00 00 00 00 0f 49 d0 89 d0 c3 55 85 c0 89 e5 75 04 0f 0b eb fe 31 d2 83 f8 10 74 34 e8 b4 ff ff ff 85 c0 75 04 <0f> 0b eb fe 8b 40 0c 85 c0 75 04 0f 0b eb fe 8b 10 f6 c6 0c 74
> EIP: [<c01714a2>] ksize+0x1b/0x4a SS:ESP 0068:dd595ea0
Can you confirm that it works in 2.6.23?
If yes this is most likely caused by
commit aadb4bc4a1f9108c1d0fbd121827c936c2ed4217
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
WARNING: multiple messages have this Message-ID (diff)
From: Adrian Bunk <bunk@kernel.org>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [BUG 2.6.24-rc3-git6] SLUB's ksize() fails for size > 2048.
Date: Sun, 2 Dec 2007 17:13:25 +0100 [thread overview]
Message-ID: <20071202161325.GL15974@stusta.de> (raw)
In-Reply-To: <200712021939.HHH18792.FLQSOOtFOFJVHM@I-love.SAKURA.ne.jp>
On Sun, Dec 02, 2007 at 07:39:59PM +0900, Tetsuo Handa wrote:
> Hello.
>
> I can't pass memory allocated by kmalloc() to ksize()
> if it is allocated by SLUB allocator and
> size is larger than (I guess) PAGE_SIZE / 2.
>
> Regards.
>
> ---------- Kernel config (grep CONFIG_SLUB .config) ----------
> CONFIG_SLUB_DEBUG=y
> CONFIG_SLUB=y
> # CONFIG_SLUB_DEBUG_ON is not set
>
> ---------- Testing program (ksize_test.c) ----------
> #include <linux/module.h>
> #include <linux/slab.h>
>
> static int __init init_ksize_test(void)
> {
> void *p = kmalloc(2049, GFP_KERNEL);
> printk("ksize(%p) = %d\n", p, ksize(p));
> kfree(p);
> return -ENOMEM;
> }
>
> module_init(init_ksize_test)
>
> MODULE_LICENSE("GPL");
>
> ------------[ cut here ]------------
> kernel BUG at mm/slub.c:2562!
> invalid opcode: 0000 [#1] SMP
> Modules linked in: ksize_test
>
> Pid: 8473, comm: modprobe Not tainted (2.6.24-rc3-git6 #4)
> EIP: 0060:[<c01714a2>] EFLAGS: 00010246 CPU: 1
> EIP is at ksize+0x1b/0x4a
> EAX: 00000000 EBX: dd776000 ECX: c16721d0 EDX: 00000000
> ESI: e081b280 EDI: df3a396c EBP: dd595ea0 ESP: dd595ea0
> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> Process modprobe (pid: 8473, ti=dd595000 task=d347cd60 task.ti=dd595000)
> Stack: dd595eb8 e081e01a dd595eb8 c014010c ffffffff e08193e0 dd595fb0 c0150b18
> 00000000 00000000 00001866 00000000 dd4dac00 d347cd60 c14366ac 00000230
> 0000135c 0000000e dd4dac00 e081b280 00000000 00000000 00000000 00000000
> Call Trace:
> [<c0106008>] show_trace_log_lvl+0x1a/0x2f
> [<c01060b8>] show_stack_log_lvl+0x9b/0xa3
> [<c0106167>] show_registers+0xa7/0x178
> [<c010634c>] die+0x114/0x1f5
> [<c0417018>] do_trap+0x8a/0xa3
> [<c01066ec>] do_invalid_op+0x88/0x92
> [<c0416dea>] error_code+0x72/0x78
> [<e081e01a>] init_ksize_test+0x1a/0x40 [ksize_test]
> [<c0150b18>] sys_init_module+0x13d3/0x14ff
> [<c0104f7e>] sysenter_past_esp+0x5f/0xa5
> =======================
> Code: 8b 02 5d 84 c0 b8 00 00 00 00 0f 49 d0 89 d0 c3 55 85 c0 89 e5 75 04 0f 0b eb fe 31 d2 83 f8 10 74 34 e8 b4 ff ff ff 85 c0 75 04 <0f> 0b eb fe 8b 40 0c 85 c0 75 04 0f 0b eb fe 8b 10 f6 c6 0c 74
> EIP: [<c01714a2>] ksize+0x1b/0x4a SS:ESP 0068:dd595ea0
Can you confirm that it works in 2.6.23?
If yes this is most likely caused by
commit aadb4bc4a1f9108c1d0fbd121827c936c2ed4217
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
--
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next prev parent reply other threads:[~2007-12-02 16:13 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-02 10:39 [BUG 2.6.24-rc3-git6] SLUB's ksize() fails for size > 2048 Tetsuo Handa
2007-12-02 10:39 ` Tetsuo Handa
2007-12-02 15:56 ` Mark Lord
2007-12-02 15:56 ` Mark Lord
2007-12-02 16:03 ` Mark Lord
2007-12-02 16:03 ` Mark Lord
2007-12-02 16:16 ` Adrian Bunk
2007-12-02 16:16 ` Adrian Bunk
2007-12-02 16:13 ` Adrian Bunk [this message]
2007-12-02 16:13 ` Adrian Bunk
2007-12-02 16:30 ` Vegard Nossum
2007-12-02 16:30 ` Vegard Nossum
2007-12-02 16:43 ` Vegard Nossum
2007-12-02 16:43 ` Vegard Nossum
2007-12-02 18:23 ` Pekka Enberg
2007-12-02 18:23 ` Pekka Enberg
2007-12-03 11:33 ` Tetsuo Handa
2007-12-03 11:33 ` Tetsuo Handa
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