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authorDavid Ahern <dsahern@gmail.com>2018-12-11 00:54:07 +0300
committerDavid S. Miller <davem@davemloft.net>2018-12-11 04:41:35 +0300
commit8cc196d6ef86bbab01dbf16f6c596cf56aa0839e (patch)
treedf782409e9117f4a333bc68cd2567ffc96070270 /tools/include/uapi/linux/bpf.h
parent93698321f72cb351ae6ab59185b611ba26e6e1d0 (diff)
downloadlinux-8cc196d6ef86bbab01dbf16f6c596cf56aa0839e.tar.xz
neighbor: gc_list changes should be protected by table lock
Adding and removing neighbor entries to / from the gc_list need to be done while holding the table lock; a couple of places were missed in the original patch. Move the list_add_tail in neigh_alloc to ___neigh_create where the lock is already obtained. Since neighbor entries should rarely be moved to/from PERMANENT state, add lock/unlock around the gc_list changes in neigh_change_state rather than extending the lock hold around all neighbor updates. Fixes: 58956317c8de ("neighbor: Improve garbage collection") Reported-by: Andrei Vagin <avagin@gmail.com> Reported-by: syzbot+6cc2fd1d3bdd2e007363@syzkaller.appspotmail.com Reported-by: syzbot+35e87b87c00f386b041f@syzkaller.appspotmail.com Reported-by: syzbot+b354d1fb59091ea73c37@syzkaller.appspotmail.com Reported-by: syzbot+3ddead5619658537909b@syzkaller.appspotmail.com Reported-by: syzbot+424d47d5c456ce8b2bbe@syzkaller.appspotmail.com Reported-by: syzbot+e4d42eb35f6a27b0a628@syzkaller.appspotmail.com Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/include/uapi/linux/bpf.h')
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