================================ WARNING: inconsistent lock state 5.5.0-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.5/10850 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff8a8c8538 (rxrpc_conn_id_lock){+.?.}, at: spin_lock include/linux/spinlock.h:338 [inline] ffffffff8a8c8538 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id net/rxrpc/conn_client.c:138 [inline] ffffffff8a8c8538 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id+0x73/0xe0 net/rxrpc/conn_client.c:135 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] rxrpc_get_client_connection_id net/rxrpc/conn_client.c:109 [inline] rxrpc_alloc_client_connection net/rxrpc/conn_client.c:193 [inline] rxrpc_get_client_conn net/rxrpc/conn_client.c:340 [inline] rxrpc_connect_call+0x954/0x4e30 net/rxrpc/conn_client.c:701 rxrpc_new_client_call+0x9c0/0x1ad0 net/rxrpc/call_object.c:290 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:595 [inline] rxrpc_do_sendmsg+0xffa/0x1d5f net/rxrpc/sendmsg.c:652 rxrpc_sendmsg+0x4d6/0x5f0 net/rxrpc/af_rxrpc.c:586 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:672 ____sys_sendmsg+0x358/0x880 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2487 __do_sys_sendmmsg net/socket.c:2516 [inline] __se_sys_sendmmsg net/socket.c:2513 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2513 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 1486 hardirqs last enabled at (1486): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (1486): [] _raw_spin_unlock_irqrestore+0x66/0xe0 kernel/locking/spinlock.c:191 hardirqs last disabled at (1485): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1485): [] _raw_spin_lock_irqsave+0x6f/0xcd kernel/locking/spinlock.c:159 softirqs last enabled at (1386): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (1431): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (1431): [] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(rxrpc_conn_id_lock); lock(rxrpc_conn_id_lock); *** DEADLOCK *** 2 locks held by syz-executor.5/10850: #0: ffff88809e57ad80 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: spin_lock include/linux/spinlock.h:338 [inline] #0: ffff88809e57ad80 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pte_range mm/memory.c:1038 [inline] #0: ffff88809e57ad80 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pmd_range mm/memory.c:1184 [inline] #0: ffff88809e57ad80 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pud_range mm/memory.c:1213 [inline] #0: ffff88809e57ad80 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_p4d_range mm/memory.c:1234 [inline] #0: ffff88809e57ad80 (&(ptlock_ptr(page))->rlock#2){+.+.}, at: unmap_page_range+0x885/0x28d0 mm/memory.c:1255 #1: ffffffff89babac0 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2176 [inline] #1: ffffffff89babac0 (rcu_callback){....}, at: rcu_core+0x562/0x1390 kernel/rcu/tree.c:2410 stack backtrace: CPU: 0 PID: 10850 Comm: syz-executor.5 Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_usage_bug.cold+0x327/0x378 kernel/locking/lockdep.c:3100 valid_state kernel/locking/lockdep.c:3111 [inline] mark_lock_irq kernel/locking/lockdep.c:3308 [inline] mark_lock+0xbb4/0x1220 kernel/locking/lockdep.c:3665 mark_usage kernel/locking/lockdep.c:3565 [inline] __lock_acquire+0x1e8e/0x4a00 kernel/locking/lockdep.c:3908 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] rxrpc_put_client_connection_id net/rxrpc/conn_client.c:138 [inline] rxrpc_put_client_connection_id+0x73/0xe0 net/rxrpc/conn_client.c:135 rxrpc_put_one_client_conn net/rxrpc/conn_client.c:955 [inline] rxrpc_put_client_conn+0x243/0xc90 net/rxrpc/conn_client.c:1001 rxrpc_put_connection net/rxrpc/ar-internal.h:965 [inline] rxrpc_rcu_destroy_call+0xbd/0x200 net/rxrpc/call_object.c:572 rcu_do_batch kernel/rcu/tree.c:2186 [inline] rcu_core+0x5e1/0x1390 kernel/rcu/tree.c:2410 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2419 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:155 [inline] RIP: 0010:write_comp_data+0x17/0x70 kernel/kcov.c:208 Code: c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 c0 1e 02 00 65 8b 05 e8 c6 8c 7e a9 00 01 1f 00 75 51 <41> 8b 80 80 13 00 00 83 f8 03 75 45 49 8b 80 88 13 00 00 45 8b 80 RSP: 0018:ffffc90007fd76e8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000080000001 RBX: ffffc90007fd7a08 RCX: ffffffff81a68622 RDX: 00000000000001fe RSI: 00000000000001c3 RDI: 0000000000000004 RBP: ffffc90007fd76f0 R08: ffff888069768440 R09: fffff940003021cf R10: fffff940003021ce R11: ffffea0001810e73 R12: 00000000000001fe R13: 00000000000001c3 R14: ffffea0001810e40 R15: ffffc90007fd7a30 __tlb_remove_page_size+0x112/0x4a0 mm/mmu_gather.c:82 __tlb_remove_page include/asm-generic/tlb.h:438 [inline] zap_pte_range mm/memory.c:1083 [inline] zap_pmd_range mm/memory.c:1184 [inline] zap_pud_range mm/memory.c:1213 [inline] zap_p4d_range mm/memory.c:1234 [inline] unmap_page_range+0xf6e/0x28d0 mm/memory.c:1255 unmap_single_vma+0x19d/0x300 mm/memory.c:1300 unmap_vmas+0x184/0x2f0 mm/memory.c:1332 exit_mmap+0x2ba/0x530 mm/mmap.c:3130 __mmput kernel/fork.c:1082 [inline] mmput+0x179/0x4d0 kernel/fork.c:1103 exit_mm kernel/exit.c:485 [inline] do_exit+0xac2/0x2f50 kernel/exit.c:788 do_group_exit+0x135/0x360 kernel/exit.c:899 get_signal+0x47c/0x24f0 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:813 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f7fe58edcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000075bfd0 RCX: 000000000045b399 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000075bfd4 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bfd4 R13: 00007ffdd65672ff R14: 00007f7fe58ee9c0 R15: 000000000075bfd4