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xen-devel
Re: [Xen-devel] Re: credit2 BUG_ON triggered
On 4/26/2011 10:02 AM, George Dunlap wrote:
OK -- it turns out on my box, I hit the bug as the machine boots, so
repro was very easy. :-) (Can you tell I haven't been working on
credit2 in a little while?)
Can you test the attached patch and see if it works for you?cc1: warnings being
treated as errors
On 4.1, it doesn't seem to compile:
sched_credit2.c: In function 'csched_vcpu_migrate':
sched_credit2.c:1363: error: implicit declaration of function 'migrate'
make[4]: *** [sched_credit2.o] Error 1
make[4]: Leaving directory `/usr/src/xen-4.1-testing.hg/xen/common'
make[3]: *** [/usr/src/xen-4.1-testing.hg/xen/common/built_in.o] Error 2
make[3]: Leaving directory `/usr/src/xen-4.1-testing.hg/xen/arch/x86'
make[2]: *** [/usr/src/xen-4.1-testing.hg/xen/xen] Error 2
make[2]: Leaving directory `/usr/src/xen-4.1-testing.hg/xen'
make[1]: *** [install] Error 2
make[1]: Leaving directory `/usr/src/xen-4.1-testing.hg/xen'
make: *** [install-xen] Error 2
I switched back over to -unstable and ran 10 tests:
Test 1: domU freeze after "(XEN) HVMx: Writing SMBIOS tables ..."
Test 2: Seemed to start normally, although VNC didn't work (probably a
separate bug in -unstable)
Test 3: domU freeze after "(XEN) HVMx: Writing SMBIOS tables ..."
Test 4: domU freeze after "(XEN) HVMx: Writing SMBIOS tables ..."
Test 5: Seemed to start normally, although VNC didn't work (probably a
separate bug in -unstable)
Test 6: domU freeze after "(XEN) HVMx: Writing SMBIOS tables ..."
Test 7: domU freeze after "(XEN) HVMx: Writing SMBIOS tables ..."
Test 8: Seemed to start normally, although VNC didn't work (probably a
separate bug in -unstable)
Test 9: Seemed to start normally, although VNC didn't work (probably a
separate bug in -unstable)
Test 10: Seemed to start normally, although VNC didn't work (probably a
separate bug in -unstable)
This would seem to confirm that the BUG_ON is being avoided now, but the
frequent SMBIOS issue means that I won't be able to start testing
credit2 with a subset of customers yet.
Note that when it started normally, there were also tons of
"memory.c:196:d18 Bad page free for domain x" and "mm.c:2137:d18 Error
pfn 0: rd=ffff8304420d7000, od=ffff830xxxxxxxxxx, caf=8000000000000001,
taf=7400000000000001" warnings, which I imagine is a separate concern.
-John
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