Bluetooth: hci3: command 0x0406 tx timeout ================================================================== BUG: KCSAN: data-race in pcpu_balance_workfn / pcpu_free_area write to 0xffffffff88f3bccc of 4 bytes by task 9643 on cpu 1: pcpu_update_empty_pages mm/percpu.c:559 [inline] pcpu_block_update_hint_free mm/percpu.c:994 [inline] pcpu_free_area+0x578/0x620 mm/percpu.c:1254 free_percpu+0x1cb/0x740 mm/percpu.c:2102 htab_free_elems kernel/bpf/hashtab.c:243 [inline] prealloc_destroy+0xee/0x1a0 kernel/bpf/hashtab.c:337 htab_map_free+0x45/0x340 kernel/bpf/hashtab.c:1373 bpf_map_free_deferred+0xb2/0x110 kernel/bpf/syscall.c:459 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffffffff88f3bccc of 4 bytes by task 3783 on cpu 0: __pcpu_balance_workfn mm/percpu.c:2002 [inline] pcpu_balance_workfn+0x911/0xe40 mm/percpu.c:2069 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3783 Comm: kworker/0:2 Not tainted 5.12.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events pcpu_balance_workfn ==================================================================