program: bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x0, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000000000000000000000000000018120000", @ANYRES32, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b7040000f6000000850000004300000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0}, 0x94) r0 = bpf$MAP_CREATE(0x0, &(0x7f00000000c0)=ANY=[@ANYBLOB="1b000000000000000000"], 0x48) bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x0, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000000000000000000000000000018120000", @ANYRES32=r0, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000002"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90) r1 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x1f, 0xc, &(0x7f0000000440)=ANY=[], &(0x7f0000000240)='GPL\x00', 0x0, 0x0, 0x0, 0x41100, 0x12, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90) bpf$BPF_GET_PROG_INFO(0xa, &(0x7f0000000740)={r1, 0x0, 0x0}, 0x10) [ 74.422760][ T5332] Bluetooth: hci0: command tx timeout [ 74.517521][ T5352] [ 74.518780][ T5352] ============================= [ 74.520898][ T5352] WARNING: suspicious RCU usage [ 74.523129][ T5352] 6.17.0-rc1-syzkaller #0 Not tainted [ 74.525530][ T5352] ----------------------------- [ 74.527701][ T5352] kernel/events/callchain.c:163 suspicious rcu_dereference_check() usage! [ 74.531555][ T5352] [ 74.531555][ T5352] other info that might help us debug this: [ 74.531555][ T5352] [ 74.536080][ T5352] [ 74.536080][ T5352] rcu_scheduler_active = 2, debug_locks = 1 [ 74.539876][ T5352] 1 lock held by syz.0.0/5352: [ 74.542268][ T5352] #0: ffffffff8e13a0c0 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x38/0x80 [ 74.546966][ T5352] [ 74.546966][ T5352] stack backtrace: [ 74.549611][ T5352] CPU: 0 UID: 0 PID: 5352 Comm: syz.0.0 Not tainted 6.17.0-rc1-syzkaller #0 PREEMPT(full) [ 74.549624][ T5352] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 74.549629][ T5352] Call Trace: [ 74.549634][ T5352] [ 74.549639][ T5352] dump_stack_lvl+0x189/0x250 [ 74.549652][ T5352] ? __pfx_dump_stack_lvl+0x10/0x10 [ 74.549662][ T5352] ? __pfx__printk+0x10/0x10 [ 74.549684][ T5352] lockdep_rcu_suspicious+0x140/0x1d0 [ 74.549737][ T5352] get_callchain_entry+0x2b6/0x3c0 [ 74.549757][ T5352] get_perf_callchain+0xa1/0x6b0 [ 74.549775][ T5352] ? __pfx_get_perf_callchain+0x10/0x10 [ 74.549790][ T5352] ? preempt_schedule+0xae/0xc0 [ 74.549835][ T5352] __bpf_get_stack+0x3fc/0xa60 [ 74.549855][ T5352] ? __pfx___bpf_get_stack+0x10/0x10 [ 74.549866][ T5352] ? __lock_acquire+0xab9/0xd20 [ 74.549885][ T5352] bpf_get_stack+0x33/0x50 [ 74.549895][ T5352] ? bpf_prog_2ae546726a474a42+0x46/0x4e [ 74.549906][ T5352] bpf_get_stack_raw_tp+0x1a9/0x220 [ 74.549922][ T5352] bpf_prog_2ae546726a474a42+0x46/0x4e [ 74.549932][ T5352] bpf_prog_run_pin_on_cpu+0xbc/0x150 [ 74.549949][ T5352] bpf_prog_test_run_syscall+0x312/0x4b0 [ 74.549966][ T5352] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 74.549979][ T5352] ? __fget_files+0x2a/0x420 [ 74.549996][ T5352] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 74.550009][ T5352] bpf_prog_test_run+0x2c4/0x340 [ 74.550026][ T5352] __sys_bpf+0x581/0x870 [ 74.550042][ T5352] ? __pfx___sys_bpf+0x10/0x10 [ 74.550053][ T5352] ? rcu_is_watching+0x15/0xb0 [ 74.550074][ T5352] ? rcu_is_watching+0x15/0xb0 [ 74.550089][ T5352] __x64_sys_bpf+0x7c/0x90 [ 74.550102][ T5352] do_syscall_64+0xfa/0x3b0 [ 74.550117][ T5352] ? lockdep_hardirqs_on+0x9c/0x150 [ 74.550128][ T5352] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.550138][ T5352] ? clear_bhb_loop+0x60/0xb0 [ 74.550150][ T5352] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.550161][ T5352] RIP: 0033:0x7fab8bb8ebe9 [ 74.550172][ T5352] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 74.550181][ T5352] RSP: 002b:00007fab8caab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 74.550192][ T5352] RAX: ffffffffffffffda RBX: 00007fab8bdb5fa0 RCX: 00007fab8bb8ebe9 [ 74.550201][ T5352] RDX: 0000000000000010 RSI: 0000200000000740 RDI: 000000000000000a [ 74.550209][ T5352] RBP: 00007fab8bc11e19 R08: 0000000000000000 R09: 0000000000000000 [ 74.550216][ T5352] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 74.550223][ T5352] R13: 00007fab8bdb6038 R14: 00007fab8bdb5fa0 R15: 00007fff84984978 [ 74.550239][ T5352]