Bug 821663
| Summary: | kernel panic when booting guest(rhel5.8x64 rhel5.7x64 rhel4.9x64 ) with -smp 65 in rhel6.3 host | ||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | FuXiangChun <xfu> | ||||
| Component: | qemu-kvm | Assignee: | Gleb Natapov <gleb> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | Virtualization Bugs <virt-bugs> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 6.3 | CC: | acathrow, areis, bsarathy, chayang, dyasny, flang, juzhang, knoel, michen, mkenneth, qzhang, shu, sluo, virt-maint | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-06-14 07:13:52 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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Description
FuXiangChun
2012-05-15 10:01:54 UTC
Check our product limits before testing: https://home.corp.redhat.com/wiki/enterprise-linux-product-limits. We do not support more then 64 cpus with any of this products and x86 variations do not even try to initialize all available vcpus. Your "reproduce" command line has "smp 64,maxcpus=161". Does this mean you hit this issue with 64 cpus, or the command line is incorrect? Regardless I do not hit this issue (which looks like kernel bug) with much more than 64 vcpus and rhel5. What host cpu do you have? Attach full console log. My "repdouce" command line should be "smp 65, maxcpus=161". the first reproduce it on AMD 6172 (48 cores) JUst can reproduce it in local host. AMD Phenom(tm) 9600B Quad-Core Processor, 4 cores. This is full console log. Booting 'Red Hat Enterprise Linux Server (2.6.18-274.el5)' root (hd0,0) Filesystem type is ext2fs, partition type 0x83 kernel /vmlinuz-2.6.18-274.el5 ro root=/dev/VolGroup00/LogVol00 crashkernel=128 M@32M console=tty0 console=ttyS0,115200n8 rhgb quiet [Linux-bzImage, setup=0x1e00, size=0x20029c] initrd /initrd-2.6.18-274.el5.img [Linux-initrd @ 0x37c9d000, 0x3520f5 bytes] WARNING calibrate_APIC_clock: the APIC timer calibration may be wrong. Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: [<ffffffff8008cecd>] sd_degenerate+0x31/0x44 PGD 0 Oops: 0000 [1] SMP last sysfs file: CPU 0 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.18-274.el5 #1 RIP: 0010:[<ffffffff8008cecd>] [<ffffffff8008cecd>] sd_degenerate+0x31/0x44 RSP: 0000:ffff81007ffbfbe0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff81000a755e60 RCX: 000000000000004d RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffff81007ffbfbf0 R08: 0000000000000040 R09: 0000000000000000 R10: ffff81007ffbfe40 R11: 000000d000000000 R12: ffff81000a755e60 R13: ffff81000a755980 R14: ffff81000a7546a0 R15: 0000000000000027 FS: 0000000000000000(0000) GS:ffffffff8042a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006e0 Process swapper (pid: 1, threadinfo ffff81007ffbe000, task ffff81007ffad7a0) Stack: ffff81000a755cc0 ffff81000a755cc0 ffff81007ffbfc30 ffffffff8008e4c9 0000004d000000d0 0000000000000040 00000000000000ff ffff81000a755cc0 00000000000000ff 0000000000000040 ffff81007ffbfe30 ffffffff800911d3 Call Trace: [<ffffffff8008e4c9>] cpu_attach_domain+0x4b/0xce [<ffffffff800911d3>] __build_sched_domains+0xd42/0x13d3 [<ffffffff8009195a>] arch_init_sched_domains+0x2e/0x35 [<ffffffff8047810a>] sched_init_smp+0x1e/0xa5 [<ffffffff804659e8>] init+0x183/0x2f7 [<ffffffff8005dfb1>] child_rip+0xa/0x11 [<ffffffff8018681a>] acpi_ds_init_one_object+0x0/0x80 [<ffffffff80465865>] init+0x0/0x2f7 [<ffffffff8005dfa7>] child_rip+0x0/0x11 Code: 48 3b 00 75 08 31 d2 f6 c1 70 0f 94 c2 59 5b c9 89 d0 c3 55 RIP [<ffffffff8008cecd>] sd_degenerate+0x31/0x44 RSP <ffff81007ffbfbe0> CR2: 0000000000000000 <0>Kernel panic - not syncing: Fatal exception (In reply to comment #1) > Check our product limits before testing: > https://home.corp.redhat.com/wiki/enterprise-linux-product-limits. We do not > support more then 64 cpus with any of this products and x86 variations do > not even try to initialize all available vcpus. > > Your "reproduce" command line has "smp 64,maxcpus=161". Does this mean you > hit this issue with 64 cpus, or the command line is incorrect? Regardless I > do not hit this issue (which looks like kernel bug) with much more than 64 > vcpus and rhel5. What host cpu do you have? Attach full console log. you can login my testing host. ip:10.66.9.97 user/password:redhat/redhat image path:/home/ (In reply to comment #2) > My "repdouce" command line should be "smp 65, maxcpus=161". > the first reproduce it on AMD 6172 (48 cores) > JUst can reproduce it in local host. > AMD Phenom(tm) 9600B Quad-Core Processor, 4 cores. > Do you see the same on Intel? > This is full console log. This is not full console log. To get full console log remove "rhgb quiet" from the kernel command line. I attached full console log in attachment. I don't hit this issue on Intel. Created attachment 591169 [details]
full log
I am closing the bug since this is not support configuration. It looks like guest kernel limitation. |