In Linux-4.16, drivers/staging/lustre/lustre/ptlrp/sec.c,
557. int ctx_refresh_timeout(...) {
.......
573. req->rq_cli_ctx->cc_ops->force_die(req->rq_cli_ctx, 0);
......
575. }
For x86 kernel configuration, there is no assignment of the function
pointer ".force_die" in the kernel code.
So calling the function pointer in line 573 may cause a null pointer
dereference.
Best wishes,
Jia-Ju Bai
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