<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Hi all,<DIV><BR class="khtml-block-placeholder"></DIV><DIV>I'm currently running lvm 2.02.25, and device-mapper 1.02.19 on kernel 2.6.20.13 with Xen 3.1 on Gentoo Linux</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>I randomly have kernel panics when creating snapshots and also when removing snapshots.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Attached is one of the kernel panics that I have seen while creating a snapshot. I'm trying to find a stable combination of kernel, lvm, and Xen version.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Thanks!</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">------------[ cut here ]------------</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">kernel BUG at mm/mempool.c:121!</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">invalid opcode: 0000 [#1]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-style-span" style="line-height: 14px;"><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;">SMP</SPAN></FONT><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> </SPAN></FONT></SPAN></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">Modules linked in: ipv6 nfs lockd nfs_acl sunrpc bridge llc dm_snapshot dm_mod aoe qla2xxx i2c_i801 i2c_core firmware_class e1000 uhci_hcd evdev</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">CPU: 0</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">EIP: 0061:[<c013d66b>] Not tainted VLI</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">EFLAGS: 00010282 (2.6.20.14-xen #5)</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">EIP is at mempool_resize+0x137/0x16c</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">eax: ec5a6900 ebx: ffffffe0 ecx: 000000d0 edx: ffffffe0</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">esi: e9395b00 edi: f07f5080 ebp: ec5a6900 esp: e8317d5c</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">ds: 007b es: 007b ss: 0069</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">Process vgchange (pid: 8179, ti=e8316000 task=e873da70 task.ti=e8316000)</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-style-span" style="line-height: 14px;"><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;">Stack: 00692000 000000d0 ffffffe0 80000000 ffffffe0 e9395b00 f07f5080 00000000</SPAN></FONT><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> </SPAN></FONT></SPAN></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-style-span" style="line-height: 14px;"><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> ee24a3c8 00000000 e8d289c0 ee24a5cd e873da70 c012d034 e8317d94 e8317d94</SPAN></FONT><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> </SPAN></FONT></SPAN></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-style-span" style="line-height: 14px;"><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> c0156c7e e93962c0 e9395b00 f07f5080 ee06ebf1 f07f5080 e93964c0 00000000</SPAN></FONT><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> </SPAN></FONT></SPAN></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">Call Trace:</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee24a3c8>] resize_pool+0x47/0xb2 [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee24a5cd>] kcopyd_client_destroy+0x84/0xc9 [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c012d034>] autoremove_wake_function+0x0/0x37</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c0156c7e>] kfree+0xe/0x7d</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee06ebf1>] snapshot_dtr+0x85/0xcf [dm_snapshot]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee246d73>] dm_table_put+0x55/0xbd [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee245b0e>] dm_put+0x6f/0x110 [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee249561>] dev_remove+0x76/0xa4 [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee249b48>] ctl_ioctl+0x1eb/0x255 [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c0107457>] monotonic_clock+0x37/0x74</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<ee2494eb>] dev_remove+0x0/0xa4 [dm_mod]</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c0164874>] do_ioctl+0x64/0x6d</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c01648cd>] vfs_ioctl+0x50/0x278</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c0164b29>] sys_ioctl+0x34/0x53</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c0104c34>] syscall_call+0x7/0xb</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> [<c0320033>] unix_dgram_sendmsg+0x2f9/0x48a</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;"> =======================</SPAN></FONT></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><SPAN class="Apple-style-span" style="line-height: 14px;"><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;">Code: 8b 45 08 3b 45 04 0f 8d 4c ff ff ff 8b 14 24 89 e8 e8 c4 93 1e 00 8b 55 10 8b 44 24 04 ff 55 14 89 c3 85 c0 75 bf e9 37 ff ff ff <0f> 0b eb fe 8b 14 24 89 e8 e8 a1 93 1e 00 8b 55 10 89 d8 ff 55</SPAN></FONT><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px; line-height: normal;"> </SPAN></FONT></SPAN></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><FONT class="Apple-style-span" color="#333333" face="Lucida Grande" size="2"><SPAN class="Apple-style-span" style="font-size: 10px;">EIP: [<c013d66b>] mempool_resize+0x137/0x16c SS:ESP 0069:e8317d5c</SPAN></FONT></DIV></BODY></HTML>