Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts. executing program [ 52.693572] audit: type=1400 audit(1582548239.340:36): avc: denied { map } for pid=8048 comm="syz-executor478" path="/root/syz-executor478589588" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 52.708194] IPVS: ftp: loaded support on port[0] = 21 [ 52.788710] [ 52.790372] ================================ [ 52.794768] WARNING: inconsistent lock state [ 52.799162] 4.19.106-syzkaller #0 Not tainted [ 52.803647] -------------------------------- [ 52.808049] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 52.814185] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 52.819442] 0000000049f5a472 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20 [ 52.829701] {SOFTIRQ-ON-W} state was registered at: [ 52.834805] lock_acquire+0x16f/0x3f0 [ 52.838702] _raw_spin_lock+0x2f/0x40 [ 52.842677] rxrpc_connect_call+0x351/0x4920 [ 52.847164] rxrpc_new_client_call+0x8e7/0x1880 [ 52.851909] rxrpc_do_sendmsg+0xfc3/0x1ca3 [ 52.856224] rxrpc_sendmsg+0x4a0/0x5b0 [ 52.860206] sock_sendmsg+0xd7/0x130 [ 52.864019] ___sys_sendmsg+0x3e2/0x920 [ 52.868070] __sys_sendmmsg+0x1bf/0x4e0 [ 52.872121] __x64_sys_sendmmsg+0x9d/0x100 [ 52.876429] do_syscall_64+0xfd/0x620 [ 52.880308] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.885672] irq event stamp: 156254 [ 52.889390] hardirqs last enabled at (156254): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 52.899621] hardirqs last disabled at (156253): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 52.909011] softirqs last enabled at (156150): [] _local_bh_enable+0x1c/0x30 [ 52.917840] softirqs last disabled at (156151): [] irq_exit+0x180/0x1d0 [ 52.926236] [ 52.926236] other info that might help us debug this: [ 52.932886] Possible unsafe locking scenario: [ 52.932886] [ 52.938927] CPU0 [ 52.941493] ---- [ 52.944055] lock(&(&local->client_conns_lock)->rlock); [ 52.949614] [ 52.952355] lock(&(&local->client_conns_lock)->rlock); [ 52.957965] [ 52.957965] *** DEADLOCK *** [ 52.957965] [ 52.964012] 1 lock held by swapper/1/0: [ 52.967966] #0: 0000000092a5b908 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 [ 52.977078] [ 52.977078] stack backtrace: [ 52.981591] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.106-syzkaller #0 [ 52.988680] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.998093] Call Trace: [ 53.000667] [ 53.002919] dump_stack+0x197/0x210 [ 53.006543] print_usage_bug.cold+0x330/0x42a [ 53.011154] ? save_stack_trace+0x1a/0x20 [ 53.015296] mark_lock+0xd1b/0x1370 [ 53.018914] ? check_usage_backwards+0x340/0x340 [ 53.023788] __lock_acquire+0xc62/0x49c0 [ 53.027869] ? mark_held_locks+0x100/0x100 [ 53.032096] ? save_stack+0x45/0xd0 [ 53.035734] ? __kasan_slab_free+0x102/0x150 [ 53.040132] ? kasan_slab_free+0xe/0x10 [ 53.044095] ? kfree+0xcf/0x220 [ 53.047362] ? mark_held_locks+0x100/0x100 [ 53.051590] ? find_held_lock+0x35/0x130 [ 53.055645] ? debug_object_deactivate+0x1e4/0x360 [ 53.060565] ? mark_held_locks+0x100/0x100 [ 53.064789] ? debug_object_deactivate+0x1e4/0x360 [ 53.069746] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 53.074839] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 53.079413] lock_acquire+0x16f/0x3f0 [ 53.083220] ? rxrpc_put_client_conn+0x683/0xc20 [ 53.087988] _raw_spin_lock+0x2f/0x40 [ 53.091785] ? rxrpc_put_client_conn+0x683/0xc20 [ 53.096535] rxrpc_put_client_conn+0x683/0xc20 [ 53.101175] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 53.106272] ? rxrpc_process_call.cold+0x20/0x20 [ 53.111029] rxrpc_rcu_destroy_call+0xbd/0x200 [ 53.115783] rcu_process_callbacks+0xba0/0x1a30 [ 53.120439] ? __rcu_read_unlock+0x170/0x170 [ 53.124857] __do_softirq+0x25c/0x921 [ 53.128653] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.134192] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.139743] irq_exit+0x180/0x1d0 [ 53.143193] smp_apic_timer_interrupt+0x13b/0x550 [ 53.148026] apic_timer_interrupt+0xf/0x20 [ 53.152335] [ 53.154563] RIP: 0010:native_safe_halt+0xe/0x10 [ 53.159219] Code: ff ff 48 89 df e8 22 c7 4d fa eb 82 e9 07 00 00 00 0f 00 2d 44 30 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 34 30 53 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 6e 9b 04 fa e8 09 [ 53.178117] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 53.186524] RAX: 1ffffffff11e4ab4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000 [ 53.193784] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c [ 53.201041] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000 [ 53.208302] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 53.216170] R13: ffffffff88f25590 R14: 0000000000000000 R15: ffff8880aa3a43c0 [ 53.223478] ? default_idle+0x4e/0x320 [ 53.227390] arch_cpu_idle+0xa/0x10 [ 53.231009] default_idle_call+0x36/0x90 [ 53.235065] do_idle+0x30c/0x4d0 [ 53.238419] ? trace_hardirqs_on+0x67/0x220 [ 53.242772] ? arch_cpu_idle_exit+0x80/0x80 [ 53.247118] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 53.252210] ? complete+0x61/0x80 [ 53.255649] cpu_startup_entry+0xc8/0xe0 [ 53.259693] ? cpu_in_idle+0x20/0x20 [ 53.263404] ? setup_APIC_timer+0x1aa/0x200 [ 53.267721] start_secondary+0x3e8/0x5b0 [ 53.271781] ? set_cpu_sibling_map+0x1860/0x1860 [ 53.276528] secondary_startup_64+0xa4/0xb0