program: r0 = openat$snapshot(0xffffffffffffff9c, &(0x7f0000000000), 0x4c3, 0x0) r1 = syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) connect$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x4e20, @rand_addr=0x64010100}, 0x10) ptrace(0x10, r1) openat$ptmx(0xffffffffffffff9c, &(0x7f0000002240), 0x80040, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7) r2 = getpid() sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x40001e0, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) r5 = bpf$MAP_CREATE(0x0, &(0x7f00000000c0)=@base={0x1b, 0x0, 0x0, 0x8000}, 0x48) bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x10, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000000000000000000000000000018120000", @ANYRES32=r5, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b7040000f6000000850000004300000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) r6 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x1f, 0xc, &(0x7f0000000440)=ANY=[], &(0x7f0000000240)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x12, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90) bpf$BPF_GET_PROG_INFO(0xa, &(0x7f0000000740)={r6, 0x0, 0x0}, 0x10) ptrace$PTRACE_SECCOMP_GET_FILTER(0x420c, r1, 0x0, &(0x7f0000000700)=""/4096) r7 = syz_open_dev$radio(0x0, 0xffffffffffffffff, 0x2) fsconfig$FSCONFIG_SET_FD(r7, 0x5, &(0x7f0000000080)='\x00', 0x0, r0) openat$fuse(0xffffffffffffff9c, &(0x7f0000002080), 0x2, 0x0) mount$fuse(0x0, 0x0, &(0x7f0000002100), 0x410, 0x0) [ 75.896031][ T5334] Bluetooth: hci0: command tx timeout [ 76.294124][ T5356] [ 76.295499][ T5356] ============================= [ 76.297953][ T5356] WARNING: suspicious RCU usage [ 76.300160][ T5356] syzkaller #0 Not tainted [ 76.302168][ T5356] ----------------------------- [ 76.304260][ T5356] kernel/events/callchain.c:163 suspicious rcu_dereference_check() usage! [ 76.307998][ T5356] [ 76.307998][ T5356] other info that might help us debug this: [ 76.307998][ T5356] [ 76.312535][ T5356] [ 76.312535][ T5356] rcu_scheduler_active = 2, debug_locks = 1 [ 76.315977][ T5356] 1 lock held by syz.0.0/5356: [ 76.318125][ T5356] #0: ffffffff8e33a2c0 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x38/0x80 [ 76.322573][ T5356] [ 76.322573][ T5356] stack backtrace: [ 76.325196][ T5356] CPU: 0 UID: 0 PID: 5356 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 76.325212][ T5356] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 76.325220][ T5356] Call Trace: [ 76.325228][ T5356] [ 76.325234][ T5356] dump_stack_lvl+0x189/0x250 [ 76.325257][ T5356] ? __pfx_dump_stack_lvl+0x10/0x10 [ 76.325272][ T5356] ? __pfx__printk+0x10/0x10 [ 76.325295][ T5356] lockdep_rcu_suspicious+0x140/0x1d0 [ 76.325344][ T5356] get_callchain_entry+0x2b6/0x3c0 [ 76.325360][ T5356] get_perf_callchain+0xa1/0x6b0 [ 76.325379][ T5356] ? __pfx_get_perf_callchain+0x10/0x10 [ 76.325398][ T5356] ? preempt_schedule+0xae/0xc0 [ 76.325440][ T5356] __bpf_get_stack+0x3fc/0xa60 [ 76.325456][ T5356] ? __pfx___bpf_get_stack+0x10/0x10 [ 76.325464][ T5356] ? __lock_acquire+0xab9/0xd20 [ 76.325476][ T5356] bpf_get_stack+0x33/0x50 [ 76.325482][ T5356] ? bpf_prog_d43750871481577d+0x46/0x4e [ 76.325489][ T5356] bpf_get_stack_raw_tp+0x1a9/0x220 [ 76.325507][ T5356] bpf_prog_d43750871481577d+0x46/0x4e [ 76.325518][ T5356] bpf_prog_run_pin_on_cpu+0x6a/0x150 [ 76.325532][ T5356] bpf_prog_test_run_syscall+0x312/0x4b0 [ 76.325545][ T5356] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 76.325555][ T5356] ? __fget_files+0x2a/0x420 [ 76.325575][ T5356] ? __pfx_bpf_prog_test_run_syscall+0x10/0x10 [ 76.325587][ T5356] bpf_prog_test_run+0x2c7/0x340 [ 76.325606][ T5356] __sys_bpf+0x581/0x870 [ 76.325615][ T5356] ? __pfx___sys_bpf+0x10/0x10 [ 76.325622][ T5356] ? rcu_is_watching+0x15/0xb0 [ 76.325635][ T5356] ? rcu_is_watching+0x15/0xb0 [ 76.325644][ T5356] __x64_sys_bpf+0x7c/0x90 [ 76.325652][ T5356] do_syscall_64+0xfa/0x3b0 [ 76.325659][ T5356] ? lockdep_hardirqs_on+0x9c/0x150 [ 76.325685][ T5356] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.325694][ T5356] ? clear_bhb_loop+0x60/0xb0 [ 76.325705][ T5356] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 76.325712][ T5356] RIP: 0033:0x7f57f398eba9 [ 76.325720][ T5356] 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 [ 76.325726][ T5356] RSP: 002b:00007f57f47d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 76.325738][ T5356] RAX: ffffffffffffffda RBX: 00007f57f3bd6180 RCX: 00007f57f398eba9 [ 76.325746][ T5356] RDX: 0000000000000010 RSI: 0000200000000740 RDI: 000000000000000a [ 76.325751][ T5356] RBP: 00007f57f3a11e19 R08: 0000000000000000 R09: 0000000000000000 [ 76.325757][ T5356] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 76.325763][ T5356] R13: 00007f57f3bd6218 R14: 00007f57f3bd6180 R15: 00007fff2c9766d8 [ 76.325779][ T5356] [ 76.480126][ T1316] ieee802154 phy0 wpan0: encryption failed: -22 [ 76.483612][ T1316] ieee802154 phy1 wpan1: encryption failed: -22