Date: Thu, 24 Sep 2015 20:56:28 -0400 From: suresh gumpula <gsuryacse7k@gmail.com> To: Mark Johnston <markj@freebsd.org> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: system map mutex and zone mutex witness warning Message-ID: <CAJOqHmi-nXEag1MqoapRguaCv-uqZUtq1pgxzDvxB=Lda5vtdg@mail.gmail.com> In-Reply-To: <20150924173916.GA78083@muskytusk> References: <CAJOqHmiS5AjZX%2BVHpuNt67UpYwtsq_e5RQBAkWcRWbu0GYmdPA@mail.gmail.com> <20150924173916.GA78083@muskytusk>
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Thanks Mark and Bryan. I will apply this change and see if it goes away. Thanks Suresh On Thu, Sep 24, 2015 at 1:41 PM, Mark Johnston <markj@freebsd.org> wrote: > On Wed, Sep 23, 2015 at 11:04:19PM -0400, suresh gumpula wrote: > > Hi, > > I am seeing the following witness warning while booting on 8.1. > Is > > it a known issue and > > resolved in later kernels ? Can somebody please comment on this ? > > I've seen this occur when multiple threads race to establish a lock > order: https://svnweb.freebsd.org/changeset/base/284127 > > The change should apply to 8.1, but there may be other relevant bug > fixes missing. > > > > > isitmychild: rmatrix mismatch between system map (index 43) and UMA zone > > (index 57): w_rmatrix[43][57] == 1 but w_rmatrix[57][43] == 0 > > KDB: stack backtrace: > > kdb_backtrace() at kdb_backtrace+0x3e > > witness_line() at witness_line+0xca4 > > witness_line() at witness_line+0xcf9 > > witness_releaseok() at witness_releaseok+0x1623 > > witness_checkorder() at witness_checkorder+0x37e > > _mtx_lock_flags() at _mtx_lock_flags+0x113 > > uma_zalloc_arg() at uma_zalloc_arg+0x1449 > > vmspace_swap_count() at vmspace_swap_count+0xc52 > > uma_zalloc_arg() at uma_zalloc_arg+0x10e6 > > uma_zalloc_arg() at uma_zalloc_arg+0x5ef > > vmspace_alloc() at vmspace_alloc+0x180 > > vm_map_init() at vm_map_init+0xec > > vm_map_insert() at vm_map_insert+0x4cb > > kmem_malloc() at kmem_malloc+0x3de > > zone_drain() at zone_drain+0x822 > > uma_large_malloc() at uma_large_malloc+0x4e > > malloc() at malloc+0x251 > > swap_pager_swap_init() at swap_pager_swap_init+0x219 > > vm_pageout_oom() at vm_pageout_oom+0x952 > > fork_exit() at fork_exit+0x185 > > fork_trampoline() at fork_trampoline+0xe > > --- trap 0, rip = 0, rsp = 0xffffff806bb61d30, rbp = 0 --- > > Witness disabled. > > > > > > Thanks > > Suresh > > _______________________________________________ > > freebsd-hackers@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > > To unsubscribe, send any mail to " > freebsd-hackers-unsubscribe@freebsd.org" >
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