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| author | Vasily Averin <vvs@virtuozzo.com> | 2020-03-27 07:50:40 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2020-04-13 17:28:21 +0300 |
| commit | e1e8399eee72e9d5246d4d1bcacd793debe34dd3 (patch) | |
| tree | 887478375ca2a2a4acfc756049bb8f29e207dd77 /net/sunrpc/xprtsock.c | |
| parent | 8f3d9f354286745c751374f5f1fcafee6b3f3136 (diff) | |
| download | linux-e1e8399eee72e9d5246d4d1bcacd793debe34dd3.tar.xz | |
nfsd: memory corruption in nfsd4_lock()
New struct nfsd4_blocked_lock allocated in find_or_allocate_block()
does not initialized nbl_list and nbl_lru.
If conflock allocation fails rollback can call list_del_init()
access uninitialized fields and corrupt memory.
v2: just initialize nbl_list and nbl_lru right after nbl allocation.
Fixes: 76d348fadff5 ("nfsd: have nfsd4_lock use blocking locks for v4.1+ lock")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/xprtsock.c')
0 files changed, 0 insertions, 0 deletions