mmap: syz-executor.2 (8388) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt. ================================ WARNING: inconsistent lock state ieee80211 phy3: hwaddr 02:00:00:00:03:00 registered 4.14.182-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-fuzzer/6328 [HC0[0]:SC1[1]:HE1:SE0] takes: (rxrpc_conn_id_lock){+.?.}, at: [] spin_lock include/linux/spinlock.h:317 [inline] (rxrpc_conn_id_lock){+.?.}, at: [] rxrpc_put_client_connection_id.part.0+0x15/0x70 net/rxrpc/conn_client.c:143 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] rxrpc_get_client_connection_id net/rxrpc/conn_client.c:114 [inline] rxrpc_alloc_client_connection net/rxrpc/conn_client.c:198 [inline] rxrpc_get_client_conn net/rxrpc/conn_client.c:342 [inline] rxrpc_connect_call+0x7ec/0x3e50 net/rxrpc/conn_client.c:692 rxrpc_new_client_call+0x8d3/0x1400 net/rxrpc/call_object.c:276 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:525 [inline] rxrpc_do_sendmsg+0x8a1/0x1023 net/rxrpc/sendmsg.c:577 rxrpc_sendmsg+0x47d/0x5a0 net/rxrpc/af_rxrpc.c:543 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x349/0x840 net/socket.c:2062 __sys_sendmmsg+0x129/0x330 net/socket.c:2152 SYSC_sendmmsg net/socket.c:2183 [inline] SyS_sendmmsg+0x2f/0x50 net/socket.c:2178 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb irq event stamp: 8456560 hardirqs last enabled at (8456560): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (8456560): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:192 hardirqs last disabled at (8456559): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (8456559): [] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:160 softirqs last enabled at (8456028): [] __do_softirq+0x664/0x9bf kernel/softirq.c:314 softirqs last disabled at (8456539): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (8456539): [] irq_exit+0x15b/0x1a0 kernel/softirq.c:409 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(rxrpc_conn_id_lock); lock(rxrpc_conn_id_lock); *** DEADLOCK *** 1 lock held by syz-fuzzer/6328: #0: (rcu_callback){....}, at: [] __rcu_reclaim kernel/rcu/rcu.h:185 [inline] #0: (rcu_callback){....}, at: [] rcu_do_batch kernel/rcu/tree.c:2699 [inline] #0: (rcu_callback){....}, at: [] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] #0: (rcu_callback){....}, at: [] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x861/0x1180 kernel/rcu/tree.c:2946 stack backtrace: CPU: 1 PID: 6328 Comm: syz-fuzzer Not tainted 4.14.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 print_usage_bug.cold+0x42e/0x570 kernel/locking/lockdep.c:2589 valid_state kernel/locking/lockdep.c:2602 [inline] mark_lock_irq kernel/locking/lockdep.c:2796 [inline] mark_lock+0xb42/0x1040 kernel/locking/lockdep.c:3194 mark_irqflags kernel/locking/lockdep.c:3072 [inline] __lock_acquire+0xd2f/0x42a0 kernel/locking/lockdep.c:3448 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152 spin_lock include/linux/spinlock.h:317 [inline] rxrpc_put_client_connection_id.part.0+0x15/0x70 net/rxrpc/conn_client.c:143 rxrpc_put_client_connection_id include/linux/rcupdate.h:775 [inline] rxrpc_put_one_client_conn net/rxrpc/conn_client.c:912 [inline] rxrpc_put_client_conn+0x60e/0xa90 net/rxrpc/conn_client.c:957 rxrpc_put_connection net/rxrpc/ar-internal.h:862 [inline] rxrpc_rcu_destroy_call+0x83/0x190 net/rxrpc/call_object.c:642 __rcu_reclaim kernel/rcu/rcu.h:195 [inline] rcu_do_batch kernel/rcu/tree.c:2699 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x78d/0x1180 kernel/rcu/tree.c:2946 __do_softirq+0x254/0x9bf kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x15b/0x1a0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5f0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0033:0x40c34b RSP: 002b:000000c002856cc8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 000000c002856d48 RBX: 000000c00003ea80 RCX: 000000c0000ad680 RDX: 000000c0000ad680 RSI: 0000000000000000 RDI: 000000c01e98f8e8 RBP: 000000c002856d58 R08: 0000000000000004 R09: 0000000000203000 R10: 0000000000000008 R11: 0000000000000074 R12: 00000000000000f4 R13: 0000000000000000 R14: 0000000000ab4ae7 R15: 0000000000000000 ieee80211 phy4: Selected rate control algorithm 'minstrel_ht' IPVS: ftp: loaded support on port[0] = 21 ieee80211 phy4: hwaddr 02:00:00:00:04:00 registered audit: type=1804 audit(1590999941.664:25): pid=8427 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir670630704/syzkaller.eEJgSq/16/file0/file0" dev="ramfs" ino=29923 res=1 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21