================================ WARNING: inconsistent lock state 4.19.105-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.2/19010 [HC0[0]:SC1[1]:HE1:SE0] takes: 000000009f84df55 (rxrpc_conn_id_lock){+.?.}, at: spin_lock include/linux/spinlock.h:329 [inline] 000000009f84df55 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id.part.0+0x19/0x70 net/rxrpc/conn_client.c:143 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [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:345 [inline] rxrpc_connect_call+0x948/0x4920 net/rxrpc/conn_client.c:702 rxrpc_new_client_call+0x8e7/0x1880 net/rxrpc/call_object.c:291 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:596 [inline] rxrpc_do_sendmsg+0xfc3/0x1ca3 net/rxrpc/sendmsg.c:652 rxrpc_sendmsg+0x4a0/0x5b0 net/rxrpc/af_rxrpc.c:593 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2115 __sys_sendmmsg+0x1bf/0x4e0 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2236 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 1788 hardirqs last enabled at (1788): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (1788): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 kernel/locking/spinlock.c:184 hardirqs last disabled at (1787): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1787): [] _raw_spin_lock_irqsave+0x6f/0xcd kernel/locking/spinlock.c:152 softirqs last enabled at (1698): [] __do_softirq+0x633/0x921 kernel/softirq.c:318 softirqs last disabled at (1729): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (1729): [] irq_exit+0x180/0x1d0 kernel/softirq.c:412 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.2/19010: #0: 00000000cc6d26ed (&(ptlock_ptr(page))->rlock#2){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #0: 00000000cc6d26ed (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pte_range mm/memory.c:1299 [inline] #0: 00000000cc6d26ed (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pmd_range mm/memory.c:1440 [inline] #0: 00000000cc6d26ed (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_pud_range mm/memory.c:1469 [inline] #0: 00000000cc6d26ed (&(ptlock_ptr(page))->rlock#2){+.+.}, at: zap_p4d_range mm/memory.c:1490 [inline] #0: 00000000cc6d26ed (&(ptlock_ptr(page))->rlock#2){+.+.}, at: unmap_page_range+0x8a9/0x1fb0 mm/memory.c:1511 #1: 000000003931b886 (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:226 [inline] #1: 000000003931b886 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2584 [inline] #1: 000000003931b886 (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] #1: 000000003931b886 (rcu_callback){....}, at: __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] #1: 000000003931b886 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 kernel/rcu/tree.c:2881 stack backtrace: CPU: 1 PID: 19010 Comm: syz-executor.2 Not tainted 4.19.105-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+0x330/0x42a kernel/locking/lockdep.c:2540 valid_state kernel/locking/lockdep.c:2553 [inline] mark_lock_irq kernel/locking/lockdep.c:2747 [inline] mark_lock+0xd1b/0x1370 kernel/locking/lockdep.c:3127 mark_irqflags kernel/locking/lockdep.c:3005 [inline] __lock_acquire+0xc62/0x49c0 kernel/locking/lockdep.c:3368 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] rxrpc_put_client_connection_id.part.0+0x19/0x70 net/rxrpc/conn_client.c:143 rxrpc_put_client_connection_id include/linux/spinlock.h:370 [inline] rxrpc_put_one_client_conn net/rxrpc/conn_client.c:956 [inline] rxrpc_put_client_conn+0x6c6/0xc20 net/rxrpc/conn_client.c:1002 rxrpc_put_connection net/rxrpc/ar-internal.h:951 [inline] rxrpc_rcu_destroy_call+0xbd/0x200 net/rxrpc/call_object.c:657 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893 RIP: 0010:page_remove_rmap+0xe6/0x12c0 mm/rmap.c:1331 Code: 8d 7c 24 30 be 04 00 00 00 e8 96 00 09 00 f0 41 83 44 24 30 ff 0f 98 c3 31 ff 89 de e8 03 75 d1 ff 84 db 75 14 e8 ba 73 d1 ff <48> 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a6 73 d1 ff be 0c RSP: 0018:ffff88804cc9f6b8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff88808ee7a500 RBX: 0000000000000000 RCX: 1ffff11011dcf5ae RDX: 0000000000000000 RSI: ffffffff81996906 RDI: 0000000000000286 RBP: ffff88804cc9f6f8 R08: ffff88808ee7a500 R09: 0000000000000001 R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffffea0002036200 R13: ffffea0002036208 R14: 0000000000000000 R15: dead000000000100 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xda2/0x1fb0 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3091 __mmput kernel/fork.c:1015 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1036 exit_mm kernel/exit.c:546 [inline] do_exit+0xb1e/0x30d0 kernel/exit.c:867 do_group_exit+0x135/0x370 kernel/exit.c:983 get_signal+0x3ec/0x1fc0 kernel/signal.c:2583 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c429 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:00007fc59fab2cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000076bf28 RCX: 000000000045c429 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000076bf28 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000076bf2c R13: 00007ffd570650cf R14: 00007fc59fab39c0 R15: 000000000076bf2c netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode netlink: 'syz-executor.3': attribute type 5 has an invalid length. device tunl0 entered promiscuous mode device tunl0 left promiscuous mode