program: close(0xffffffffffffffff) bpf$PROG_LOAD(0x5, &(0x7f0000000c40)={0x6, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="180000000000000000000000fdffffde18000000", @ANYRES32, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000004300000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, '\x00', 0x0, @fallback=0x2d, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) r0 = bpf$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)={r0, 0x0, 0x0}, 0x10) [ 93.284822][ T5279] Bluetooth: hci0: command tx timeout [ 93.310654][ T1128] cfg80211: failed to load regulatory.db [ 93.370311][ T5316] [ 93.377235][ T5316] ============================= [ 93.379721][ T5316] WARNING: suspicious RCU usage [ 93.382304][ T5316] syzkaller #0 Not tainted [ 93.384346][ T5316] ----------------------------- [ 93.386702][ T5316] kernel/events/callchain.c:163 suspicious rcu_dereference_check() usage! [ 93.391067][ T5316] [ 93.391067][ T5316] other info that might help us debug this: [ 93.391067][ T5316] [ 93.395824][ T5316] [ 93.395824][ T5316] rcu_scheduler_active = 2, debug_locks = 1 [ 93.399684][ T5316] locks held by syz.0.0/5316: 1, last CPU#0: [ 93.402416][ T5316] #0: ffffffff8ed5ca98 (rcu_tasks_trace_srcu_struct){....}-{0:0}, at: rcu_read_lock_trace+0x25/0x110 [ 93.410815][ T5316] [ 93.410815][ T5316] stack backtrace: [ 93.413554][ T5316] CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 93.417136][ T5316] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 93.421203][ T5316] Call Trace: [ 93.422694][ T5316] [ 93.425882][ T5316] dump_stack_lvl+0xe8/0x150 [ 93.428027][ T5316] lockdep_rcu_suspicious+0x140/0x1d0 [ 93.430471][ T5316] get_callchain_entry+0x2b7/0x3c0 [ 93.432492][ T5316] get_perf_callchain+0xd5/0x880 [ 93.434620][ T5316] ? __pfx_get_perf_callchain+0x10/0x10 [ 93.437773][ T5316] ? __lock_acquire+0x747/0x2de0 [ 93.439980][ T5316] __bpf_get_stack+0x375/0xae0 [ 93.442168][ T5316] ? __pfx___bpf_get_stack+0x10/0x10 [ 93.444409][ T5316] ? __lock_acquire+0x747/0x2de0 [ 93.446496][ T5316] ? lock_acquire+0x115/0x350 [ 93.448563][ T5316] ? bpf_prog_42db8cfdf50901c9+0x46/0x4e [ 93.451958][ T5316] bpf_get_stack_raw_tp+0x1a4/0x210 [ 93.454317][ T5316] bpf_prog_42db8cfdf50901c9+0x46/0x4e [ 93.456790][ T5316] bpf_prog_run_pin_on_cpu+0x14f/0x4c0 [ 93.459250][ T5316] bpf_prog_test_run_syscall+0x324/0x4c0 [ 93.461776][ T5316] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 93.464599][ T5316] ? __fget_files+0x2a/0x420 [ 93.467129][ T5316] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 93.470034][ T5316] bpf_prog_test_run+0x2c5/0x340 [ 93.472262][ T5316] __sys_bpf+0xa22/0xda0 [ 93.474134][ T5316] ? __pfx___sys_bpf+0x10/0x10 [ 93.476265][ T5316] ? do_futex+0x458/0x4e0 [ 93.478265][ T5316] ? rcu_is_watching+0x16/0xb0 [ 93.480420][ T5316] __x64_sys_bpf+0xba/0xd0 [ 93.482416][ T5316] do_syscall_64+0x166/0x520 [ 93.484338][ T5316] ? trace_irq_disable+0x3b/0x140 [ 93.486527][ T5316] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.489360][ T5316] ? clear_bhb_loop+0x70/0xc0 [ 93.491409][ T5316] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 93.493873][ T5316] RIP: 0033:0x7f08a9d9e159 [ 93.495773][ T5316] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 93.503739][ T5316] RSP: 002b:00007f08aacf3fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 93.507258][ T5316] RAX: ffffffffffffffda RBX: 00007f08aa025fa0 RCX: 00007f08a9d9e159 [ 93.510672][ T5316] RDX: 0000000000000010 RSI: 0000200000000740 RDI: 000000000000000a [ 93.513995][ T5316] RBP: 00007f08a9e3506b R08: 0000000000000000 R09: 0000000000000000 [ 93.517369][ T5316] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 93.520658][ T5316] R13: 00007f08aa026038 R14: 00007f08aa025fa0 R15: 00007ffdbc0d5b98 [ 93.524070][ T5316]