rtrs_client L2020: : CM error (CM event: address error, err: -ENODEV) ================================================================== BUG: KASAN: null-ptr-deref in do_trace_event_raw_event_rtrs_clt_conn_class drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:58 [inline] BUG: KASAN: null-ptr-deref in trace_event_raw_event_rtrs_clt_conn_class+0x220/0x480 drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:36 Read of size 255 at addr 0000000000000000 by task kworker/u8:0/12 CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 Workqueue: ib_addr process_one_req Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 print_report+0x58/0x84 mm/kasan/report.c:485 kasan_report+0x8c/0xc4 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x17c/0x1ac mm/kasan/generic.c:200 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105 do_trace_event_raw_event_rtrs_clt_conn_class drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:58 [inline] trace_event_raw_event_rtrs_clt_conn_class+0x220/0x480 drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:36 __traceiter_rtrs_rdma_error_recovery+0x74/0xc8 drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:78 __do_trace_rtrs_rdma_error_recovery drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:78 [inline] trace_rtrs_rdma_error_recovery drivers/infiniband/ulp/rtrs/rtrs-clt-trace.h:78 [inline] rtrs_rdma_error_recovery+0x2d4/0x400 drivers/infiniband/ulp/rtrs/rtrs-clt.c:311 rtrs_clt_rdma_cm_handler+0x498/0x1a18 drivers/infiniband/ulp/rtrs/rtrs-clt.c:2062 cma_cm_event_handler+0xbc/0x4c8 drivers/infiniband/core/cma.c:2181 addr_handler+0x210/0x3b4 drivers/infiniband/core/cma.c:3552 process_one_req+0x26c/0x440 drivers/infiniband/core/addr.c:624 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 ==================================================================