Daniel Stekloff
2006-Mar-06 23:15 UTC
[Xen-devel] [PATCH][XM-TEST] New hping TCP and UDP tests
Hi,
The included patch adds network tests that hping TCP and UDP packets.
The new tests uncover some issues on HVM enabled systems with qemu-dm.
The 13_network_domU_udp_pos.py test hits an error on both 32 and 64bit
SMP systems. I hit a kernel BUG 2 out of 4 runs on my 64bit system.
Unfortunately, I can''t reproduce the bug on every run. I need to add
more stressful tests.
We will file a bug for the error we''ve encountered.
Here''s dmesg output from the 64bit error encountered with
13_network_domU_udp_pos.py:
device vif627.8 left promiscuous mode
xenbr0: port 8(vif627.8) entering disabled state
Eeek! page_mapcount(page) went negative! (-1)
page->flags = 14
page->count = 1
page->mapping = 0000000000000000
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at mm/rmap.c:555
invalid opcode: 0000 [1]
CPU 0
Modules linked in: video thermal processor fan button battery ac qla2300
qla2xxx scsi_transport_fc
Pid: 519, comm: qemu-dm Not tainted 2.6.16-rc5-xen0 #2
RIP: e030:[<ffffffff8015d507>]
<ffffffff8015d507>{page_remove_rmap+135}
RSP: e02b:ffff880014067bc8 EFLAGS: 00010286
RAX: 00000000ffffffff RBX: ffff8800014b5df8 RCX: 0000000000000000
RDX: 00000000ffffff01 RSI: 000000000001926c RDI: ffffffff8052f260
RBP: ffff880014067bd8 R08: 0000000000000000 R09: 0000000000000023
R10: 000000000000001f R11: 000000000000001e R12: ffff88000d6ff568
R13: 0000000000000000 R14: ffff8800014b5df8 R15: ffff88000a5acab0
FS: 00002ae1efafbde0(0000) GS:ffffffff80654000(0000)
knlGS:0000000000000000
CS: e033 DS: 0000 ES: 0000
Process qemu-dm (pid: 519, threadinfo ffff880014066000, task
ffff8800175f5180)
Stack: ffff880014067bd8 00002aaaaacad000 ffff880014067cd8
ffffffff80154684
0000000000000000 00002aaaaaeabfff 00002aaaaaeabfff
00002aaaaaeabfff
00000000a91a2067 ffffffff00000000
Call Trace: <ffffffff80154684>{unmap_vmas+1764}
<ffffffff8015abc2>{exit_mmap+98} <ffffffff801244b3>{mmput+35}
<ffffffff80128e1c>{exit_mm+204}
<ffffffff80129637>{do_exit+519}
<ffffffff80130c22>{recalc_sigpending+18}
<ffffffff801312b9>{__dequeue_signal+441}
<ffffffff80129d2d>{do_group_exit+205}
<ffffffff801330e9>{get_signal_to_deliver+1433}
<ffffffff8010a22d>{do_signal+125}
<ffffffff801755b7>{pipe_readv+663}
<ffffffff8017564e>{pipe_read
+30}
<ffffffff8010af34>{sysret_signal+39}
<ffffffff8010a9bf>{do_notify_resume+47}
<ffffffff8010b1d5>{ptregscall_common+61}
Code: 0f 0b 68 3c f6 4a 80 c2 2b 02 48 c7 c6 ff ff ff ff bf 20 00
RIP <ffffffff8015d507>{page_remove_rmap+135} RSP <ffff880014067bc8>
<1>Fixing recursive fault but reboot is needed!
Bad page state in process ''net.agent''
page:ffff8800014b5df8 flags:0x0000000000000014 mapping:0000000000000000
mapcount:-1 count:0
Trying to fix it up, but a reboot is needed
Backtrace:
Call Trace: <ffffffff8014a854>{free_hot_cold_page+228}
<ffffffff8014a38d>{bad_page+93}
<ffffffff8014a80d>{free_hot_cold_page+157}
<ffffffff8014ac9b>{free_hot_page+11}
<ffffffff8014b4a9>{__free_pages+41}
<ffffffff8011812c>{pte_free+476}
<ffffffff80152c1d>{free_pgd_range+1133}
<ffffffff8015320b>{free_pgtables+139}
<ffffffff8015abde>{exit_mmap+126}
<ffffffff801244b3>{mmput+35} <ffffffff80128e1c>{exit_mm+204}
<ffffffff80129637>{do_exit+519}
<ffffffff80169494>{vfs_read+196}
<ffffffff80129d2d>{do_group_exit+205}
<ffffffff80129d42>{sys_exit_group+18}
<ffffffff8010ae4d>{system_call+117}
<ffffffff8010add8>{system_call+0}
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Daniel Stekloff
2006-Mar-07 23:32 UTC
Re: [Xen-devel] [PATCH][XM-TEST] New hping TCP and UDP tests
Just for the record - these new tests don''t cause any failures. The error I was seeing was from 13_create_multinic_pos.py, which has been in the tree for quite some time. Sorry for the confusion. Dan On Mon, 2006-03-06 at 15:15 -0800, Daniel Stekloff wrote:> Hi, > > The included patch adds network tests that hping TCP and UDP packets. > > The new tests uncover some issues on HVM enabled systems with qemu-dm. > The 13_network_domU_udp_pos.py test hits an error on both 32 and 64bit > SMP systems. I hit a kernel BUG 2 out of 4 runs on my 64bit system. > Unfortunately, I can''t reproduce the bug on every run. I need to add > more stressful tests. > > We will file a bug for the error we''ve encountered. > > Here''s dmesg output from the 64bit error encountered with > 13_network_domU_udp_pos.py: > > device vif627.8 left promiscuous mode > xenbr0: port 8(vif627.8) entering disabled state > Eeek! page_mapcount(page) went negative! (-1) > page->flags = 14 > page->count = 1 > page->mapping = 0000000000000000 > ----------- [cut here ] --------- [please bite here ] --------- > Kernel BUG at mm/rmap.c:555 > invalid opcode: 0000 [1] > CPU 0 > Modules linked in: video thermal processor fan button battery ac qla2300 > qla2xxx scsi_transport_fc > Pid: 519, comm: qemu-dm Not tainted 2.6.16-rc5-xen0 #2 > RIP: e030:[<ffffffff8015d507>] <ffffffff8015d507>{page_remove_rmap+135} > RSP: e02b:ffff880014067bc8 EFLAGS: 00010286 > RAX: 00000000ffffffff RBX: ffff8800014b5df8 RCX: 0000000000000000 > RDX: 00000000ffffff01 RSI: 000000000001926c RDI: ffffffff8052f260 > RBP: ffff880014067bd8 R08: 0000000000000000 R09: 0000000000000023 > R10: 000000000000001f R11: 000000000000001e R12: ffff88000d6ff568 > R13: 0000000000000000 R14: ffff8800014b5df8 R15: ffff88000a5acab0 > FS: 00002ae1efafbde0(0000) GS:ffffffff80654000(0000) > knlGS:0000000000000000 > CS: e033 DS: 0000 ES: 0000 > Process qemu-dm (pid: 519, threadinfo ffff880014066000, task > ffff8800175f5180) > Stack: ffff880014067bd8 00002aaaaacad000 ffff880014067cd8 > ffffffff80154684 > 0000000000000000 00002aaaaaeabfff 00002aaaaaeabfff > 00002aaaaaeabfff > 00000000a91a2067 ffffffff00000000 > Call Trace: <ffffffff80154684>{unmap_vmas+1764} > <ffffffff8015abc2>{exit_mmap+98} <ffffffff801244b3>{mmput+35} > <ffffffff80128e1c>{exit_mm+204} > <ffffffff80129637>{do_exit+519} > <ffffffff80130c22>{recalc_sigpending+18} > <ffffffff801312b9>{__dequeue_signal+441} > <ffffffff80129d2d>{do_group_exit+205} > <ffffffff801330e9>{get_signal_to_deliver+1433} > <ffffffff8010a22d>{do_signal+125} > <ffffffff801755b7>{pipe_readv+663} <ffffffff8017564e>{pipe_read > +30} > <ffffffff8010af34>{sysret_signal+39} > <ffffffff8010a9bf>{do_notify_resume+47} > <ffffffff8010b1d5>{ptregscall_common+61} > > Code: 0f 0b 68 3c f6 4a 80 c2 2b 02 48 c7 c6 ff ff ff ff bf 20 00 > RIP <ffffffff8015d507>{page_remove_rmap+135} RSP <ffff880014067bc8> > <1>Fixing recursive fault but reboot is needed! > Bad page state in process ''net.agent'' > page:ffff8800014b5df8 flags:0x0000000000000014 mapping:0000000000000000 > mapcount:-1 count:0 > Trying to fix it up, but a reboot is needed > Backtrace: > > Call Trace: <ffffffff8014a854>{free_hot_cold_page+228} > <ffffffff8014a38d>{bad_page+93} > <ffffffff8014a80d>{free_hot_cold_page+157} > <ffffffff8014ac9b>{free_hot_page+11} > <ffffffff8014b4a9>{__free_pages+41} > <ffffffff8011812c>{pte_free+476} > <ffffffff80152c1d>{free_pgd_range+1133} > <ffffffff8015320b>{free_pgtables+139} > <ffffffff8015abde>{exit_mmap+126} > <ffffffff801244b3>{mmput+35} <ffffffff80128e1c>{exit_mm+204} > <ffffffff80129637>{do_exit+519} <ffffffff80169494>{vfs_read+196} > <ffffffff80129d2d>{do_group_exit+205} > <ffffffff80129d42>{sys_exit_group+18} > <ffffffff8010ae4d>{system_call+117} > <ffffffff8010add8>{system_call+0} > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel