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msm: ADSPRPC: Map and FD non-NULL check before dereferencing

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When fd is zero, we set context fds to NULL. This will avoid
calling map create for context. Proper check is required
to avoid dereferencing of map and fd.

Change-Id: Id8d4b93d7d999e14ac1ebd8291137f799a73cf1a
Acked-by: Ekansh Gupta <ekangupt@qti.qualcomm.com>
Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Edgar Flores <edgarf@codeaurora.org>
This commit is contained in:
Edgar Flores 2020-07-28 14:06:42 -07:00 • committed by Gerrit - the friendly Code Review server
commit 7dd7c6a789
1 changed files with 4 additions and 3 deletions
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7
drivers/char/adsprpc.c
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@ -2210,9 +2210,10 @@ static int get_args(uint32_t kernel, struct smq_invoke_ctx *ctx)
PERF_END);
for (i = bufs; i < bufs + handles; ++i) {
struct fastrpc_mmap *map = ctx->maps[i];
pages[i].addr = map->phys;
pages[i].size = map->size;
if (map) {
pages[i].addr = map->phys;
pages[i].size = map->size;
}
}
fdlist = (uint64_t *)&pages[bufs + handles];
crclist = (uint32_t *)&fdlist[M_FDLIST];