On Sunday 26 March 2006 12:02, Joao Barros wrote: > On 3/26/06, Joao Barros <joao.barros_at_gmail.com> wrote: > > Last night I was mounting a windows share with mount_smbfs and > > browsing it via apache and I got the machine to panic twice. I was > > tired and went to bed. > > Today I can't replicate the panic but this always happens when I unmount: > > > > I'm trying to replicate the panic, and if I can I'll post a followup. > > > > Here's the panic while doing a cvsup: > > panic: mutex Giant not owned at /usr/src/sys/kern/vfs_subr.c:2025 > KDB: enter: panic > [thread pid 979 tid 100090 ] > Stopped at kdb_enter+0x2b: nop > db> where > Tracing pid 979 tid 100090 td 0xc3573510 > kdb_enter(c06cc0e7) at kdb_enter+0x2b > panic(c06cb401,c06dbed4,c06d5d7b,7e9,c3766000) at panic+0xbb > --More-- _mtx_assert(c0733b28,1,c06d5d7b,7e9) at _mtx_assert+0x66 > vrele(c3766000,c34efc28,c34ef800,c3573510,d6aff82c) at vrele+0x4e > smbfs_reclaim(d6aff82c) at smbfs_reclaim+0xc9 > VOP_RECLAIM_APV(c3735a60,d6aff82c) at VOP_RECLAIM_APV+0x7e > vgonel(c3766410) at vgonel+0x12d > vtryrecycle(c3766410,0,2,d6aff8ac,c059f18f) at vtryrecycle+0x107 > vnlru_free(1) at vnlru_free+0x14e > getnewvnode(c06d3bc3,c351b000,c071e880,d6aff918,d6aff8f0) at getnewvnode+0x33 > ffs_vget(c351b000,5dbe1,2,d6aff97c) at ffs_vget+0xc2 > ufs_lookup(d6affa20) at ufs_lookup+0xaa2 > VOP_CACHEDLOOKUP_APV(c071e880,d6affa20) at VOP_CACHEDLOOKUP_APV+0x7e > vfs_cache_lookup(d6affabc,c3819c30,0,d6affad8,c059a3fe) at vfs_cache_lookup+0xb2 > VOP_LOOKUP_APV(c071e880,d6affabc) at VOP_LOOKUP_APV+0x87 > lookup(d6affb48,0,0,c3573510,c381a000) at lookup+0x3f6 > namei(d6affb48,82b5304,0,0,c3544c30) at namei+0x382 > kern_lstat(c3573510,82b5304,0,d6affc1c) at kern_lstat+0x47 > lstat(c3573510,d6affd04,c0734404,0,c328cd00) at lstat+0x1b > syscall(bfbf003b,bfbf003b,81d003b,bfbfed28,bfbfed1c) at syscall+0x27e > Xint0x80_syscall() at Xint0x80_syscall+0x1f Hmm, so if an MPSAFE vfs needs a vnode it might be recycling a vnode from a non-MPSAFE vfs resulting in this. Does getnewvnode() or some other function in the recycling chain need to conditionally acquire Giant? -- John Baldwin <jhb_at_FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orgReceived on Mon Mar 27 2006 - 16:30:45 UTC
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