Re: kernel BUG at mm/huge_memory.c:1798!

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On 25 December 2012 16:05, Hillf Danton <dhillf@xxxxxxxxx> wrote:
> On Tue, Dec 25, 2012 at 12:38 PM, Zhouping Liu <zliu@xxxxxxxxxx> wrote:
>> Hello all,
>>
>> I found the below kernel bug using latest mainline(637704cbc95),
>> my hardware has 2 numa nodes, and it's easy to reproduce the issue
>> using LTP test case: "# ./mmap10 -a -s -c 200":
>
> Can you test with 5a505085f0 and 4fc3f1d66b1 reverted?
>

Hello,
does it look like the same problem?

mapcount 0 page_mapcount 1
------------[ cut here ]------------
kernel BUG at mm/huge_memory.c:1798!
invalid opcode: 0000 [#1] PREEMPT SMP
Modules linked in: r8169 radeon cfbfillrect cfbimgblt cfbcopyarea
i2c_algo_bit backlight drm_kms_helper ttm drm agpgart
CPU 3
Pid: 15825, comm: firefox Not tainted 3.8.0-rc1-00004-g637704c #1
Gigabyte Technology Co., Ltd. P35-DS3/P35-DS3
RIP: 0010:[<ffffffff810e89c9>]  [<ffffffff810e89c9>] split_huge_page+0x739/0x7a0
RSP: 0018:ffff880193b43b78  EFLAGS: 00010297
RAX: 0000000000000001 RBX: ffffea0002fd0000 RCX: ffffffff8175e078
RDX: 000000000000003e RSI: ffffea0002fd0000 RDI: 0000000000000246
RBP: ffff880193b43c48 R08: 000000000000ffff R09: 0000000000000000
R10: 00000000000002d5 R11: 0000000000000000 R12: 0000000000000000
R13: ffff880173533464 R14: 00007f0973000000 R15: ffffea0002fd0000
FS:  00007f09b8db6740(0000) GS:ffff88019fd80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff210e78008 CR3: 0000000195379000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process firefox (pid: 15825, threadinfo ffff880193b42000, task ffff880198af9f90)
Stack:
 0000000000000000 ffff880193b43e1c 0000000000000000 0000000000000019
 ffff880193b43c08 ffff880100000000 ffff88017af80180 ffff880100000000
 ffff880173533400 ffff880198af9f90 000000009fc91540 ffff88017af801b0
Call Trace:
 [<ffffffff810e9d74>] __split_huge_page_pmd+0xe4/0x280
 [<ffffffff810a9b9e>] ? free_hot_cold_page_list+0x3e/0x60
 [<ffffffff810c22cd>] unmap_single_vma+0x77d/0x820
 [<ffffffff810c2c14>] zap_page_range+0xa4/0xe0
 [<ffffffff813d9846>] ? sys_recvfrom+0xd6/0x120
 [<ffffffff810bfa7d>] sys_madvise+0x31d/0x660
 [<ffffffff81482b2d>] system_call_fastpath+0x1a/0x1f
Code: 83 39 00 f3 90 49 8b 45 00 a9 00 00 80 00 75 f3 41 ff 84 24 44
e0 ff ff f0 41 0f ba 6d 00 17 19 c0 85 c0 0f 84 d7 fa ff ff eb c8 <0f>
0b 8b 53 18 8b 75 9c ff c2 48 c7 c7 60 95 5c 81 31 c0 e8 ac
RIP  [<ffffffff810e89c9>] split_huge_page+0x739/0x7a0
 RSP <ffff880193b43b78>

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