syz-executor.5 (8907) used greatest stack depth: 22984 bytes left ================================ WARNING: inconsistent lock state 4.19.106-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. ksoftirqd/1/18 [HC0[0]:SC1[1]:HE1:SE0] takes: 000000006c856025 (&(&local->client_conns_lock)->rlock){+.?.}, at: spin_lock include/linux/spinlock.h:329 [inline] 000000006c856025 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_one_client_conn net/rxrpc/conn_client.c:949 [inline] 000000006c856025 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x666/0xc00 net/rxrpc/conn_client.c:1002 {SOFTIRQ-ON-W} state was registered at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] rxrpc_get_client_conn net/rxrpc/conn_client.c:309 [inline] rxrpc_connect_call+0x301/0x4630 net/rxrpc/conn_client.c:702 rxrpc_new_client_call+0x8c6/0x1850 net/rxrpc/call_object.c:291 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:596 [inline] rxrpc_do_sendmsg+0xf2e/0x1bc1 net/rxrpc/sendmsg.c:652 rxrpc_sendmsg+0x4a8/0x5b0 net/rxrpc/af_rxrpc.c:593 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:632 ___sys_sendmsg+0x3e2/0x920 net/socket.c:2115 __sys_sendmmsg+0x195/0x470 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 55172698 hardirqs last enabled at (55172698): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (55172698): [] _raw_spin_unlock_irqrestore+0x67/0xe0 kernel/locking/spinlock.c:184 hardirqs last disabled at (55172697): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (55172697): [] _raw_spin_lock_irqsave+0x66/0xbf kernel/locking/spinlock.c:152 softirqs last enabled at (55172632): [] __do_softirq+0x650/0x93c kernel/softirq.c:318 softirqs last disabled at (55172637): [] run_ksoftirqd kernel/softirq.c:653 [inline] softirqs last disabled at (55172637): [] run_ksoftirqd+0x89/0x100 kernel/softirq.c:645 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&local->client_conns_lock)->rlock); lock(&(&local->client_conns_lock)->rlock); *** DEADLOCK *** 1 lock held by ksoftirqd/1/18: #0: 000000007d3b3e9a (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:226 [inline] #0: 000000007d3b3e9a (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2584 [inline] #0: 000000007d3b3e9a (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] #0: 000000007d3b3e9a (rcu_callback){....}, at: __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] #0: 000000007d3b3e9a (rcu_callback){....}, at: rcu_process_callbacks+0xbff/0x17f0 kernel/rcu/tree.c:2881 stack backtrace: CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 4.19.106-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+0x188/0x20d lib/dump_stack.c:118 print_usage_bug.cold+0x327/0x425 kernel/locking/lockdep.c:2540 valid_state kernel/locking/lockdep.c:2553 [inline] mark_lock_irq kernel/locking/lockdep.c:2747 [inline] mark_lock+0xc71/0x11b0 kernel/locking/lockdep.c:3127 mark_irqflags kernel/locking/lockdep.c:3005 [inline] __lock_acquire+0xc62/0x49c0 kernel/locking/lockdep.c:3368 lock_acquire+0x170/0x400 kernel/locking/lockdep.c:3903 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] rxrpc_put_one_client_conn net/rxrpc/conn_client.c:949 [inline] rxrpc_put_client_conn+0x666/0xc00 net/rxrpc/conn_client.c:1002 rxrpc_put_connection net/rxrpc/ar-internal.h:951 [inline] rxrpc_rcu_destroy_call+0xb6/0x1e0 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+0xb2d/0x17f0 kernel/rcu/tree.c:2881 __do_softirq+0x26c/0x93c kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:653 [inline] run_ksoftirqd+0x89/0x100 kernel/softirq.c:645 smpboot_thread_fn+0x653/0x9d0 kernel/smpboot.c:164 kthread+0x34a/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Unknown ioctl 19586 Unknown ioctl 19586 Unknown ioctl 19586 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000006e382cc4 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=0000000092ce50d1 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=000000007163a473 [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=0000000019db6cef FS-Cache: N-key=[10] '0200020000807f000008' Unknown ioctl 19586 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000a1eb2b67 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=000000002d99b226 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000c4c72e58 [p=000000008840baf4 fl=2 nc=0 na=1] Unknown ioctl 19586 FS-Cache: N-cookie d=0000000099505f2c n=000000009779c7a1 FS-Cache: N-key=[10] '0200020000807f000008' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=0000000029e98c60 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=000000005e6e179b FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000450935fd [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=00000000294ea535 FS-Cache: N-key=[10] '0200020000807f000008' Unknown ioctl 19586 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=0000000029e98c60 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=000000005e6e179b FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=000000006e3ff08f [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=0000000015fa0a86 FS-Cache: N-key=[10] '0200020000807f000008' Unknown ioctl 19586 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000ab501fc5 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=000000007a70a5e0 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000a14cca68 [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=00000000367e7e37 FS-Cache: N-key=[10] '0200020000807f000008' Unknown ioctl 19586 Unknown ioctl 19586 FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=00000000dc0d97f4 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=00000000816d24fa FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=0000000040c863f8 [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=00000000df7a1b73 FS-Cache: N-key=[10] '0200020000807f000008' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000003dcc93e0 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=00000000321b1c88 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=0000000034a69277 [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=00000000a2ae54bb FS-Cache: N-key=[10] '0200020000807f000008' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000003c4ab585 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=00000000a1a69767 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=0000000040304fe2 [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=00000000c7a49202 FS-Cache: N-key=[10] '0200020000807f000008' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=0000000040249d06 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=0000000001b384a1 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000a65dd25d [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=0000000041782a31 FS-Cache: N-key=[10] '0200020000807f000008' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=000000005850a39b [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=000000000f30095c FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000abd8f4ce [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=0000000041c35aa7 FS-Cache: N-key=[10] '0200020000807f000008' FS-Cache: Duplicate cookie detected FS-Cache: O-cookie c=0000000093ddbdf5 [p=000000008840baf4 fl=222 nc=0 na=1] FS-Cache: O-cookie d=0000000099505f2c n=00000000fd7306d7 FS-Cache: O-key=[10] '0200020000807f000008' FS-Cache: N-cookie c=00000000d3f7eaa6 [p=000000008840baf4 fl=2 nc=0 na=1] FS-Cache: N-cookie d=0000000099505f2c n=000000004e123679 FS-Cache: N-key=[10] '0200020000807f000008'