Locking fixes for my(4)

Christian Brueffer chris at unixpages.org
Wed Aug 17 15:51:17 GMT 2005


On Wed, Aug 17, 2005 at 10:02:55AM -0400, John Baldwin wrote:
> On Tuesday 16 August 2005 05:13 am, Christian Brueffer wrote:
> > On Wed, Aug 10, 2005 at 04:57:18PM -0400, John Baldwin wrote:
> > > I've fixed up the locking for the my(4) ethernet device driver but have
> > > no hardware to test.  Can someone please test these patches?  Thanks.
> > >
> > > http://www.freebsd.org/~jhb/patches/my_locking.patch
> >
> > This one works fine.
> 
> Thanks for testing!  I've just refreshed the sf_locking.patch patch as well (I 
> think the last version I pointed you at didn't compile) which has the 
> recursive panic you reported fixed.
> 

panic: mutex sf0 not owned at /usr/home/build/src/sys/kern/kern_mutex.c:300
cpuid = 0
KDB: enter: panic
[thread pid 220 tid 100071 ]
Stopped at      kdb_enter+0x30: leave   
db> tr
Tracing pid 220 tid 100071 td 0xc1d83600
kdb_enter(c07945bc,0,c0793ab3,d8945b08,c1d83600) at kdb_enter+0x30
panic(c0793ab3,c1ad7aa0,c0793946,12c,c1ac2acc) at panic+0x14e
_mtx_assert(c1ac2acc,1,c0793946,12c,c1ac2a80) at _mtx_assert+0x87
_mtx_unlock_flags(c1ac2acc,0,c08ea1ea,4b9,c1adb800) at _mtx_unlock_flags+0x90
sf_init(c1ac2a80,740,c07a88e0,8020690c,c1ac2a80) at sf_init+0x59
ether_ioctl(c1adb800,8020690c,c1d41d00,c05a7f61,0) at ether_ioctl+0x67
sf_ioctl(c1adb800,8020690c,c1d41d00,100,1) at sf_ioctl+0xbc
in_ifinit(c1adb800,c1d41d00,c1c49790,0,1) at in_ifinit+0x208
in_control(c1e24de8,8040691a,c1c49780,c1adb800,c1d83600) at in_control+0x986
ifioctl(c1e24de8,8040691a,c1c49780,c1d83600,2) at ifioctl+0x1cd
soo_ioctl(c1d81048,8040691a,c1c49780,c19dca80,c1d83600) at soo_ioctl+0x3ef
ioctl(c1d83600,d8945d04,c,422,3) at ioctl+0x45d
syscall(3b,3b,3b,80beac0,1) at syscall+0x2c0
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (54, FreeBSD ELF32, ioctl), eip = 0x8055473, esp = 0xbfbfe5fc, ebp = 0xbfbfee68 ---


I can ship you a card, but it would take some time because US customs
is pretty anal these days :-/

- Christian

-- 
Christian Brueffer      chris at unixpages.org     brueffer at FreeBSD.org
GPG Key:         http://people.freebsd.org/~brueffer/brueffer.key.asc
GPG Fingerprint: A5C8 2099 19FF AACA F41B  B29B 6C76 178C A0ED 982D
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