On Thu, Mar 24, 2005 at 04:40:40AM -0500, Jeff Roberson wrote: > On Thu, 24 Mar 2005, Peter Holm wrote: > > > On Thu, Mar 24, 2005 at 12:26:32AM -0500, Jeff Roberson wrote: > > > On Sun, 20 Mar 2005, Peter Holm wrote: > > > > > > > With GENERIC HEAD from Mar 18 15:56 UTC I ran into these two > > > > problems where a user process seems to be waiting on a lock, > > > > that appears to be owned by non-existent thread. > > > > Hey, your back! > > Just got back last night. > > > > > > > > > Odd that this is a directory. Do you know if the other times you were > > > able to trigger this were also with directories? > > > > > > > Yes, your right. Grepping throu the crash dumps it appears that > > the other getblk problems were related to read or write. > > I committed code to panic immediately when a thread tries to return to > userspace with a lock held. This should make the ktr data useful. > Hopefully you or kkenn will see this soon and get me some ktr output. > I'll grab it right away and start testing. - Peter > Thanks, > Jeff > > > > > - Peter > > > > > > > > 5123 [SLPQ getblk 0xc665717c][SLP] mkdir > > > > > > > > sleepq_switch(c665717c,cf4698c8,c061bcd5,...) at sleepq_switch+0xe0 > > > > sleepq_wait(c665717c,0,0,2010020,600) at sleepq_wait+0x30 > > > > msleep(c665717c,c09118dc,50,c083af8f,0) at msleep+0x311 > > > > acquire(cf469920,2010020,600,c1b2b000,0) at acquire+0xba > > > > debuglockmgr(c665717c,2090022,c1e7d5a0,...) at debuglockmgr+0x406 > > > > getblk(c1e7d500,0,0,800,0) at getblk+0x15a > > > > breadn(c1e7d500,0,0,800,0) at breadn+0x58 > > > > bread(c1e7d500,0,0,800,0) at bread+0x20 > > > > ffs_blkatoff(c1e7d500,0,0,0,cf469a58) at ffs_blkatoff+0x9e > > > > ufs_lookup(cf469b18) at ufs_lookup+0x326 > > > > VOP_CACHEDLOOKUP_APV(c08cf140,cf469b18) at VOP_CACHEDLOOKUP_APV+0x7e > > > > vfs_cache_lookup(cf469b9c) at vfs_cache_lookup+0xd2 > > > > VOP_LOOKUP_APV(c08cf140,cf469b9c) at VOP_LOOKUP_APV+0x7e > > > > lookup(cf469c7c,c0918d80,0,c1b2b000,69f) at lookup+0x362 > > > > namei(cf469c7c) at namei+0x34a > > > > kern_rmdir(c1b2b000,bfbc97d0,0,cf469d40,c07cc3a3) at kern_rmdir+0x3a > > > > rmdir(c1b2b000,cf469d14,1,25,292) at rmdir+0x12 > > > > syscall(2804002f,bfbf002f,bfb8002f,2804f24c,bfbfeb00) at syscall+0x213 > > > > > > > > (kgdb) p (*(struct lock *)0xc665717c)->lk_lockholder->td_state > > > > $2 = TDS_INACTIVE > > > > > > > > http://www.holm.cc/stress/log/cons122.html > > > > http://www.holm.cc/stress/log/cons123.html > > > > -- > > > > Peter Holm > > > > > > _______________________________________________ > > freebsd-current_at_freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" > >Received on Thu Mar 24 2005 - 08:45:22 UTC
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