program: r0 = socket$kcm(0x23, 0x5, 0x0) listen(r0, 0x800) accept(r0, 0x0, 0x0) r1 = socket$kcm(0x10, 0x2, 0x0) sendmsg$inet(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000f00)=[{&(0x7f0000000200)="5c00000014006b05c84e21000ab16d6e230675f811000000440002005817d30461bc24eeb556a7ef595105ea1698fa51f60a64c9f408000000e786a6d0bdbdc3d44bd70011b6c0504bb9189d9193e9bd00"/92, 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x240040c4) r2 = socket$phonet_pipe(0x23, 0x5, 0x2) connect$phonet_pipe(r2, &(0x7f0000000040)={0x23, 0x0, 0x58}, 0x10) r3 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000000)={0x0, 0x0}) setsockopt$PNPIPE_ENCAP(r2, 0x113, 0x1, &(0x7f0000000080)=0x1, 0x4) close_range(r3, 0xffffffffffffffff, 0x0) [ 85.535057][ T5322] netlink: 'syz.0.0': attribute type 2 has an invalid length. [ 85.595217][ C0] [ 85.596366][ C0] ================================ [ 85.598471][ C0] WARNING: inconsistent lock state [ 85.600569][ C0] syzkaller #0 Not tainted [ 85.602386][ C0] -------------------------------- [ 85.604457][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 85.607363][ C0] syz.0.0/5320 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 85.610152][ C0] ffff888012f63c68 (slock-AF_PHONET/1){+.?.}-{3:3}, at: __sk_receive_skb+0x1bf/0x9e0 [ 85.615728][ C0] {SOFTIRQ-ON-W} state was registered at: [ 85.618149][ C0] lock_acquire+0x106/0x350 [ 85.620373][ C0] _raw_spin_lock_nested+0x32/0x50 [ 85.622720][ C0] __sk_receive_skb+0x1bf/0x9e0 [ 85.624895][ C0] pep_do_rcv+0x685/0xaa0 [ 85.626822][ C0] __release_sock+0x297/0x3a0 [ 85.628992][ C0] release_sock+0x190/0x260 [ 85.631087][ C0] pep_sock_accept+0xdf5/0x12b0 [ 85.633282][ C0] pn_socket_accept+0xc9/0x2e0 [ 85.635380][ C0] do_accept+0x521/0x760 [ 85.637343][ C0] __sys_accept4+0x139/0x230 [ 85.639415][ C0] __x64_sys_accept+0x7d/0x90 [ 85.641606][ C0] do_syscall_64+0x15f/0xf80 [ 85.643709][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.646410][ C0] irq event stamp: 1522 [ 85.648293][ C0] hardirqs last enabled at (1522): [] _raw_spin_unlock_irq+0x23/0x50 [ 85.652519][ C0] hardirqs last disabled at (1521): [] _raw_spin_lock_irq+0x17/0x50 [ 85.656790][ C0] softirqs last enabled at (1516): [] netif_rx+0x79/0x90 [ 85.660647][ C0] softirqs last disabled at (1517): [] do_softirq+0x76/0xd0 [ 85.664574][ C0] [ 85.664574][ C0] other info that might help us debug this: [ 85.668112][ C0] Possible unsafe locking scenario: [ 85.668112][ C0] [ 85.671473][ C0] CPU0 [ 85.672977][ C0] ---- [ 85.674532][ C0] lock(slock-AF_PHONET/1); [ 85.676581][ C0] [ 85.678157][ C0] lock(slock-AF_PHONET/1); [ 85.680355][ C0] [ 85.680355][ C0] *** DEADLOCK *** [ 85.680355][ C0] [ 85.683786][ C0] 5 locks held by syz.0.0/5320: [ 85.685964][ C0] #0: ffff88804733b240 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: sock_close+0x9b/0x240 [ 85.690457][ C0] #1: ffff888012f64360 (sk_lock-AF_PHONET){+.+.}-{0:0}, at: pep_sock_close+0x86/0x5b0 [ 85.694747][ C0] #2: ffffffff8e95cca0 (rcu_read_lock){....}-{1:3}, at: process_backlog+0x3eb/0x1950 [ 85.699307][ C0] #3: ffff888012f64968 (slock-AF_PHONET){+.-.}-{3:3}, at: __sk_receive_skb+0x1f1/0x9e0 [ 85.703663][ C0] #4: ffff888012f649e0 (sk_lock-AF_PHONET){+.+.}-{0:0}, at: phonet_rcv+0x781/0xc40 [ 85.707602][ C0] [ 85.707602][ C0] stack backtrace: [ 85.710335][ C0] CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.710354][ C0] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 85.710361][ C0] Call Trace: [ 85.710367][ C0] [ 85.710373][ C0] dump_stack_lvl+0xe8/0x150 [ 85.710391][ C0] print_usage_bug+0x28b/0x2e0 [ 85.710406][ C0] mark_lock_irq+0x410/0x420 [ 85.710422][ C0] mark_lock+0x115/0x190 [ 85.710436][ C0] __lock_acquire+0x689/0x2cf0 [ 85.710450][ C0] ? sk_filter_trim_cap+0x1a7/0xe70 [ 85.710469][ C0] ? sk_filter_trim_cap+0x91e/0xe70 [ 85.710489][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 85.710501][ C0] ? lock_acquire+0x106/0x350 [ 85.710512][ C0] ? __sk_receive_skb+0x1bf/0x9e0 [ 85.710523][ C0] lock_acquire+0x106/0x350 [ 85.710534][ C0] ? __sk_receive_skb+0x1bf/0x9e0 [ 85.710549][ C0] _raw_spin_lock_nested+0x32/0x50 [ 85.710565][ C0] ? __sk_receive_skb+0x1bf/0x9e0 [ 85.710576][ C0] __sk_receive_skb+0x1bf/0x9e0 [ 85.710589][ C0] pep_do_rcv+0x685/0xaa0 [ 85.710604][ C0] ? __pfx_pep_do_rcv+0x10/0x10 [ 85.710620][ C0] ? __pfx_pep_do_rcv+0x10/0x10 [ 85.710633][ C0] ? phonet_rcv+0x781/0xc40 [ 85.710651][ C0] __sk_receive_skb+0x962/0x9e0 [ 85.710665][ C0] phonet_rcv+0x781/0xc40 [ 85.710677][ C0] ? handle_softirqs+0x22a/0x840 [ 85.710689][ C0] ? __irq_exit_rcu+0xca/0x220 [ 85.710700][ C0] ? irq_exit_rcu+0x9/0x30 [ 85.710713][ C0] ? __pfx_phonet_rcv+0x10/0x10 [ 85.710727][ C0] ? process_backlog+0x3eb/0x1950 [ 85.710740][ C0] ? process_backlog+0x3eb/0x1950 [ 85.710752][ C0] ? __pfx_phonet_rcv+0x10/0x10 [ 85.710764][ C0] ? process_backlog+0x3eb/0x1950 [ 85.710775][ C0] process_backlog+0xc66/0x1950 [ 85.710792][ C0] __napi_poll+0xae/0x340 [ 85.710803][ C0] ? skb_defer_free_flush+0x233/0x260 [ 85.710815][ C0] net_rx_action+0x627/0xf70 [ 85.710827][ C0] ? lock_acquire+0x106/0x350 [ 85.710841][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 85.710860][ C0] handle_softirqs+0x22a/0x840 [ 85.710873][ C0] ? do_softirq+0x76/0xd0 [ 85.710884][ C0] ? netif_rx+0x79/0x90 [ 85.710896][ C0] do_softirq+0x76/0xd0 [ 85.710906][ C0] [ 85.710910][ C0] [ 85.710914][ C0] __local_bh_enable_ip+0xf8/0x130 [ 85.710925][ C0] netif_rx+0x83/0x90 [ 85.710939][ C0] pn_send+0x62a/0x8e0 [ 85.710953][ C0] pn_skb_send+0x218/0x510 [ 85.710967][ C0] pep_sock_close+0x2c1/0x5b0 [ 85.710983][ C0] pn_socket_release+0x9b/0xc0 [ 85.710995][ C0] sock_close+0xc3/0x240 [ 85.711012][ C0] ? __pfx_sock_close+0x10/0x10 [ 85.711028][ C0] __fput+0x44f/0xa60 [ 85.711043][ C0] task_work_run+0x1d9/0x270 [ 85.711059][ C0] ? __pfx_task_work_run+0x10/0x10 [ 85.711076][ C0] exit_to_user_mode_loop+0xf3/0x4d0 [ 85.711088][ C0] ? rcu_is_watching+0x15/0xb0 [ 85.711100][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.711111][ C0] do_syscall_64+0x33e/0xf80 [ 85.711126][ C0] ? clear_bhb_loop+0x40/0x90 [ 85.711137][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.711149][ C0] RIP: 0033:0x7f777759ce59 [ 85.711161][ C0] 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 [ 85.711172][ C0] RSP: 002b:00007ffd4e630f78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 85.711185][ C0] RAX: 0000000000000000 RBX: 00007ffd4e631060 RCX: 00007f777759ce59 [ 85.711193][ C0] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 85.711199][ C0] RBP: 0000000000014d49 R08: 0000000000000001 R09: 0000000000000000 [ 85.711205][ C0] R10: 00007f77773ff040 R11: 0000000000000246 R12: 00007ffd4e6310a0 [ 85.711214][ C0] R13: 00007f7777815fac R14: 0000000000014de5 R15: 00007f7777815fa0 [ 85.711224][ C0] [ 85.903991][ T5286] Bluetooth: hci0: command tx timeout [ 85.968572][ T5320] gprs0: detached