Hi everyone,
Our Red Hat server hung yesterday, and I managed to log into the console and see the following message:
RIP: 0010:[<ffffffff8006b981>] [<ffffffff8006b981>] mwait_idle_with_hints+0x66/
0x67
RSP: 0018:ffffffff80457f40 EFLAGS: 00000046
RAX: 0000000000000010 RBX: ffff810c20075910 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000010
RBP: 134d6ef57a8e3fe8 R08: 0000000000000033 R09: 0000000000000033
R10: ffff810001005710 R11: ffffffff8014c2c9 R12: 0000000000000000
R13: ffff810c20075800 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffffffff80425000(0000) knlGS:0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 00000000f7fb6980 CR3: 0000000c016ba000 CR4: 00000000000006e0
Process swapper (pid: 0, threadinfo ffffffff80456000, task ffffffff80310b60)
Stack: ffffffff801a1337 0000000000000000 000000000000039c 0000000000000000
000000000000039c 0000000000000000 ffffffff801a11e1 0000000000090000
0000000000000000 0000000000000000 ffffffff800492fd 0000000000200800
Call Trace:
[<ffffffff801a1337>] acpi_processor_idle_simple+0x156/0x316
[<ffffffff801a11e1>] acpi_processor_idle_simple+0x0/0x316
[<ffffffff800492fd>] cpu_idle+0x95/0xb8
[<ffffffff80461807>] start_kernel+0x220/0x225
[<ffffffff8046122f>] _sinittext+0x22f/0x236
Code: c3 41 57 41 56 49 89 f6 41 55 49 89 fd 41 54 4c 8d a7 e0 02
I had to reset the server, as I couldnt ping, or get a prompt, and the above is pretty much all we have to go on. I can't find anything meaningful in /var/log/messages or dmesg. Any ideas what the above output is, or what it indicates?
Many thanks.