Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting O[ 52.996499] kauditd_printk_skb: 7 callbacks suppressed penBSD Secure Sh[ 52.996510] audit: type=1800 audit(1582094478.410:33): pid=8784 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 ell server: sshd[ 53.028001] audit: type=1800 audit(1582094478.410:34): pid=8784 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 57.862096] audit: type=1400 audit(1582094483.270:35): avc: denied { map } for pid=8960 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. executing program [ 67.733995] audit: type=1400 audit(1582094493.140:36): avc: denied { map } for pid=8972 comm="syz-executor659" path="/root/syz-executor659813543" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 67.756329] IPVS: ftp: loaded support on port[0] = 21 [ 67.825904] [ 67.827725] ================================ [ 67.832175] WARNING: inconsistent lock state [ 67.836577] 4.19.104-syzkaller #0 Not tainted [ 67.841052] -------------------------------- [ 67.845499] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 67.851772] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 67.857158] 000000009a7d24ec (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20 [ 67.867494] {SOFTIRQ-ON-W} state was registered at: [ 67.872766] lock_acquire+0x16f/0x3f0 [ 67.876676] _raw_spin_lock+0x2f/0x40 [ 67.880555] rxrpc_connect_call+0x351/0x4920 [ 67.885054] rxrpc_new_client_call+0x8e7/0x1880 [ 67.889811] rxrpc_do_sendmsg+0xfc3/0x1ca3 [ 67.894746] rxrpc_sendmsg+0x4a0/0x5b0 [ 67.898746] sock_sendmsg+0xd7/0x130 [ 67.902538] ___sys_sendmsg+0x3e2/0x920 [ 67.906588] __sys_sendmmsg+0x1bf/0x4e0 [ 67.910654] __x64_sys_sendmmsg+0x9d/0x100 [ 67.915150] do_syscall_64+0xfd/0x620 [ 67.920027] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.925297] irq event stamp: 177520 [ 67.928915] hardirqs last enabled at (177520): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 67.938721] hardirqs last disabled at (177519): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 67.948088] softirqs last enabled at (177392): [] _local_bh_enable+0x1c/0x30 [ 67.956925] softirqs last disabled at (177393): [] irq_exit+0x180/0x1d0 [ 67.965420] [ 67.965420] other info that might help us debug this: [ 67.972077] Possible unsafe locking scenario: [ 67.972077] [ 67.978335] CPU0 [ 67.980945] ---- [ 67.983518] lock(&(&local->client_conns_lock)->rlock); [ 67.989067] [ 67.991813] lock(&(&local->client_conns_lock)->rlock); [ 67.997558] [ 67.997558] *** DEADLOCK *** [ 67.997558] [ 68.003620] 1 lock held by swapper/0/0: [ 68.007582] #0: 000000006953dfb0 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 [ 68.016500] [ 68.016500] stack backtrace: [ 68.021020] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.104-syzkaller #0 [ 68.028118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.038006] Call Trace: [ 68.040626] [ 68.042802] dump_stack+0x197/0x210 [ 68.046433] print_usage_bug.cold+0x330/0x42a [ 68.051028] ? save_stack_trace+0x1a/0x20 [ 68.055169] mark_lock+0xd1b/0x1370 [ 68.058785] ? check_usage_backwards+0x340/0x340 [ 68.063542] __lock_acquire+0xc62/0x49c0 [ 68.067596] ? mark_held_locks+0x100/0x100 [ 68.071870] ? save_stack+0x45/0xd0 [ 68.075491] ? __kasan_slab_free+0x102/0x150 [ 68.079885] ? kasan_slab_free+0xe/0x10 [ 68.083914] ? kfree+0xcf/0x220 [ 68.087196] ? mark_held_locks+0x100/0x100 [ 68.091518] ? find_held_lock+0x35/0x130 [ 68.095617] ? debug_object_deactivate+0x1e4/0x360 [ 68.100595] ? mark_held_locks+0x100/0x100 [ 68.104867] ? debug_object_deactivate+0x1e4/0x360 [ 68.109947] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 68.115057] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 68.119645] lock_acquire+0x16f/0x3f0 [ 68.123442] ? rxrpc_put_client_conn+0x683/0xc20 [ 68.128320] _raw_spin_lock+0x2f/0x40 [ 68.132133] ? rxrpc_put_client_conn+0x683/0xc20 [ 68.136946] rxrpc_put_client_conn+0x683/0xc20 [ 68.141529] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 68.146275] ? rxrpc_process_call.cold+0x20/0x20 [ 68.151023] rxrpc_rcu_destroy_call+0xbd/0x200 [ 68.155675] rcu_process_callbacks+0xba0/0x1a30 [ 68.160358] ? __rcu_read_unlock+0x170/0x170 [ 68.164763] __do_softirq+0x25c/0x921 [ 68.168562] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.174317] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.179917] irq_exit+0x180/0x1d0 [ 68.183384] smp_apic_timer_interrupt+0x13b/0x550 [ 68.188227] apic_timer_interrupt+0xf/0x20 [ 68.192478] [ 68.194751] RIP: 0010:native_safe_halt+0xe/0x10 [ 68.199458] Code: ff ff 48 89 df e8 92 f8 4d fa eb 82 e9 07 00 00 00 0f 00 2d 74 61 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 64 61 53 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be cc 04 fa e8 d9 [ 68.218359] RSP: 0018:ffffffff88e07cb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 68.226146] RAX: 1ffffffff11e4ad4 RBX: ffffffff88e79ec0 RCX: 0000000000000000 [ 68.233518] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff88e7a73c [ 68.240921] RBP: ffffffff88e07ce0 R08: ffffffff88e79ec0 R09: 0000000000000000 [ 68.248187] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 68.255457] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffffffff88e79ec0 [ 68.263090] ? default_idle+0x4e/0x320 [ 68.267005] arch_cpu_idle+0xa/0x10 [ 68.270714] default_idle_call+0x36/0x90 [ 68.274774] do_idle+0x30c/0x4d0 [ 68.278146] ? arch_cpu_idle_exit+0x80/0x80 [ 68.282479] ? check_preemption_disabled+0x48/0x290 [ 68.287515] cpu_startup_entry+0xc8/0xe0 [ 68.291611] ? cpu_in_idle+0x20/0x20 [ 68.295320] rest_init+0x219/0x222 [ 68.298919] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4 [ 68.305423] start_kernel+0x7ec/0x825 [ 68.309344] ? mem_encrypt_init+0xb/0xb [ 68.313325] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.318959] ? x86_family+0x41/0x50 [ 68.322573] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20