Description of problem: In some cases, when starting paravirtualized Linux guests, Dom0 dies with a kernel bug and tears the whole machine down. Version-Release number of selected component (if applicable): Self compiled from kernel-2.6.18-1.2726.fc6.src.rpm How reproducible: After booting the machine, quickly start 8 virtual machines. It's likely to happen if you don't wait much time. Also sometimes happens when quickly destroying and restarting a guest machine. It seems I'm only seeing this now that each virtual guest is running OCFS2 for the root filesystem. Actual results: Oct 24 14:04:41 waff ----------- [cut here ] --------- [please bite here ] --------- Oct 24 14:04:41 waff Kernel BUG at drivers/xen/core/evtchn.c:481 Oct 24 14:04:41 waff invalid opcode: 0000 [1] SMP Oct 24 14:04:41 waff CPU 3 Oct 24 14:04:41 waff Modules linked in: crc32 xt_physdev ipt_REDIRECT twofish serpent blowfish sha256 aes xt_state ipt_REJECT iptable_filter ipt_NETMAP ipt_MASQUERADE xt_multi Oct 24 14:04:41 waff Pid: 21, comm: xenwatch Not tainted 2.6.18-cs2-xen0 #2 Oct 24 14:04:41 waff RIP: e030:[<ffffffff80426e7b>] [<ffffffff80426e7b>] retrigger+0x2b/0x50 Oct 24 14:04:41 waff RSP: e02b:ffff88003faffc60 EFLAGS: 00010046 Oct 24 14:04:41 waff RAX: 0000000000000000 RBX: 0000000002080000 RCX: ffffffffff578000 Oct 24 14:04:41 waff RDX: 000000000000002f RSI: ffff88003faffc20 RDI: 000000000000011e Oct 24 14:04:41 waff RBP: ffff88003faffc60 R08: 0000000000000000 R09: 0000000000000000 Oct 24 14:04:41 waff R10: 0000000000000006 R11: 0000000000000090 R12: ffffffff806b0400 Oct 24 14:04:41 waff R13: 000000000000011e R14: ffffffff806b043c R15: 0000000000000000 Oct 24 14:04:41 waff FS: 00002ac62ac02e30(0000) GS:ffffffff806a7180(0000) knlGS:0000000000000000 Oct 24 14:04:41 waff CS: e033 DS: 0000 ES: 0000 Oct 24 14:04:41 waff Process xenwatch (pid: 21, threadinfo ffff88003fafe000, task ffff88003fae5140) Oct 24 14:04:41 waff Stack: ffff88003faffc90 ffffffff802b2b6d ffff88003faffc90 0000000000008f00 Oct 24 14:04:41 waff 000000000000011e ffffffff806b0400 ffff88003faffcd0 ffffffff802b27b1 Oct 24 14:04:41 waff ffff88003faffcb0 ffff88001cdf4cc0 Oct 24 14:04:41 waff Call Trace: Oct 24 14:04:41 waff [<ffffffff802b2b6d>] check_irq_resend+0x5d/0x70 Oct 24 14:04:41 waff [<ffffffff802b27b1>] enable_irq+0xb1/0xe0 Oct 24 14:04:41 waff [<ffffffff80434c74>] __netif_up+0x14/0x30 Oct 24 14:04:41 waff [<ffffffff804351c9>] netif_map+0x329/0x370 Oct 24 14:04:41 waff [<ffffffff802a5860>] keventd_create_kthread+0x0/0x80 Oct 24 14:04:41 waff [<ffffffff804345ea>] maybe_connect+0x25a/0x430 Oct 24 14:04:41 waff [<ffffffff802a5860>] keventd_create_kthread+0x0/0x80 Oct 24 14:04:41 waff [<ffffffff8042e610>] frontend_changed+0xa0/0x120 Oct 24 14:04:41 waff [<ffffffff8042ee35>] otherend_changed+0x65/0x80 Oct 24 14:04:41 waff [<ffffffff8042d350>] xenwatch_thread+0x0/0x150 Oct 24 14:04:41 waff [<ffffffff8042c4bd>] xenwatch_handle_callback+0x1d/0x60 Oct 24 14:04:41 waff [<ffffffff8042d47e>] xenwatch_thread+0x12e/0x150 Oct 24 14:04:41 waff [<ffffffff802a5a80>] autoremove_wake_function+0x0/0x40 Oct 24 14:04:41 waff [<ffffffff802381aa>] kthread+0xda/0x110 Oct 24 14:04:41 waff [<ffffffff8026a324>] child_rip+0xa/0x12 Oct 24 14:04:41 waff [<ffffffff802a5860>] keventd_create_kthread+0x0/0x80 Oct 24 14:04:41 waff [<ffffffff802380d0>] kthread+0x0/0x110 Oct 24 14:04:41 waff [<ffffffff8026a31a>] child_rip+0x0/0x12 Oct 24 14:04:41 waff Oct 24 14:04:41 waff Oct 24 14:04:41 waff Code: 0f 0b 68 92 5c 5c 80 c2 e1 01 f0 0f ab 91 00 08 00 00 c9 b8 Oct 24 14:04:41 waff RIP [<ffffffff80426e7b>] retrigger+0x2b/0x50 Oct 24 14:04:41 waff RSP <ffff88003faffc60>
Created attachment 140752 [details] messages log same problem on Fedora Core 6 kernel 2.6.18-1.2798.fc6xen
*** Bug 218418 has been marked as a duplicate of this bug. ***
Fedora Core 5 and Fedora Core 6 are, as we're sure you've noticed, no longer test releases. We're cleaning up the bug database and making sure important bug reports filed against these test releases don't get lost. It would be helpful if you could test this issue with a released version of Fedora or with the latest development / test release. Thanks for your help and for your patience. [This is a bulk message for all open FC5/FC6 test release bugs. I'm adding myself to the CC list for each bug, so I'll see any comments you make after this and do my best to make sure every issue gets proper attention.]
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This report targets FC6, which is now end-of-life. Please re-test against Fedora 7 or later, and if the issue persists, open a new bug. Thanks