client: fix segment fault in Client::_invalidate_kernel_dcache(). #11170
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when umounting, root can be NULL Fixes: http://tracker.ceph.com/issues/17253 Signed-off-by: Yan, Zheng <zyan@redhat.com>
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I'm seeing an instance of ceph-fuse failing to terminate when running with this patch: |
2016-09-21 22:20:38.765059 7fe7baf92f00 1 client.4139 dump_inode: DISCONNECTED inode 1000000dd1c #1000000dd1c ref 11000000dd1c.head(faked_ino=0 ref=1 ll_ref=0 cap_refs={1024=0} open={} mode=40755 size=0/0 mtime=2016-09-21 22:00:40.349543 caps=-(0=pAsLsXsFsx) 0x7fe7cb640000)
this hang was caused by inode refernece leak, it's unlikely caused by this RP |
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OK, now I've seen the same failure in a run without this patch: http://pulpito.ceph.com/jspray-2016-09-23_10:14:18-fs-wip-jcsp-greenish-distro-basic-mira/432687/ |
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when umounting, root can be NULL
Fixes: http://tracker.ceph.com/issues/17253
Signed-off-by: Yan, Zheng zyan@redhat.com