Re: [patch] stime/settimeofday/adjtimex SMP races (2.2.12 and2.3.18ac5)

Herbert Huber (Herbert.Huber@lrz-muenchen.de)
Mon, 20 Sep 1999 14:20:19 +0200

The patch applied was mingos timersync-2.2.10-A2 patch! A test run with
AndreaŽs patch applied on a 2.2.12 kernel is on the way. IŽll report if
any problems are occuring. Both tests are without running xntpd,
because my machine crashed twice on Saturday (kernel 2.2.3, no oopses
displayed, no xntpd running) and I want to know wheter it is hardware or
it is really an smp race in the kernel.

Running ksymoops on the previous reported oops-message produces the
following output:

Using `/usr/src/linux/System.map' to map addresses to symbols.

>>EIP: c0123ecb <kmem_cache_free+173/198>

Code: c0123ecb <kmem_cache_free+173/198>
Code: c0123ecb <kmem_cache_free+173/198> c7 05 00 00 00 movl
$0x0,0x0
Code: c0123ed0 <kmem_cache_free+178/198> 00 00 00 00 00
Code: c0123edb <kmem_cache_free+183/198> eb 10 jmp
c0123ee7 <kmem_cache_free+18f/198>
Code: c0123edd <kmem_cache_free+185/198> 90 nop
Code: c0123ede <kmem_cache_free+186/198> 56 pushl %esi
Code: c0123edf <kmem_cache_free+187/198> 53 pushl %ebx
Code: c0123ee0 <kmem_cache_free+188/198> 68 1e 5d 1f c0 pushl
$0xc01f5d1e
Code: c0123eeb <kmem_cache_free+193/198>

Many thanks to mingo and andrea

/Herbert

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