watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz.3.1488:8982] Modules linked in: irq event stamp: 21113863 hardirqs last enabled at (21113862): [] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:401 hardirqs last disabled at (21113863): [] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline] hardirqs last disabled at (21113863): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:486 softirqs last enabled at (60): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (60): [] tipc_skb_peek_port net/tipc/msg.h:1235 [inline] softirqs last enabled at (60): [] tipc_sk_rcv+0x35c/0x1940 net/tipc/socket.c:2491 softirqs last disabled at (62): [] spin_trylock_bh include/linux/spinlock.h:411 [inline] softirqs last disabled at (62): [] tipc_sk_rcv+0x37c/0x1940 net/tipc/socket.c:2496 CPU: 0 PID: 8982 Comm: syz.3.1488 Tainted: G W 6.1.121-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_restore+0x8/0x10 arch/arm64/include/asm/irqflags.h:131 lr : lock_is_held_type+0x150/0x1a8 kernel/locking/lockdep.c:5707 sp : ffff800024eb6020 x29: ffff800024eb6020 x28: dfff800000000000 x27: ffff800024eb6480 x26: ffff0000f1ea9bc0 x25: ffff8000159e3cc0 x24: ffff800015b35640 x23: 0000000000000002 x22: ffff0000f1eaa688 x21: ffff800015c653a0 x20: 0000000000000001 x19: 0000000000000000 x18: ffff800024eb61c0 x17: ffff800018b7b000 x16: ffff8000082ffa8c x15: ffff8000105773d4 x14: 1ffff00002b520b2 x13: dfff800000000000 x12: 0000000084b85af6 x11: 0000000000ff0100 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000c0 x7 : ffff800011e1b66c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff80001248d700 x0 : 0000000000000000 Call trace: arch_local_irq_restore+0x8/0x10 arch/arm64/include/asm/irqflags.h:122 lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_held+0x34/0x50 kernel/rcu/update.c:311 __rhashtable_lookup include/linux/rhashtable.h:594 [inline] rhashtable_lookup include/linux/rhashtable.h:638 [inline] tipc_sk_lookup+0x1bc/0x8b4 net/tipc/socket.c:3001 tipc_sk_rcv+0x368/0x1940 net/tipc/socket.c:2492 tipc_node_xmit+0x1b0/0xdac net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x28c/0x3a4 net/tipc/node.c:1783 tipc_sk_rcv+0x1338/0x1940 net/tipc/socket.c:2501 tipc_node_xmit+0x1b0/0xdac net/tipc/node.c:1703 tipc_sk_push_backlog+0x3a8/0x744 net/tipc/socket.c:1316 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline] tipc_sk_proto_rcv+0x81c/0x1500 net/tipc/socket.c:2158 tipc_sk_filter_rcv+0x29d4/0x2d34 net/tipc/socket.c:2352 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x6e0/0x1940 net/tipc/socket.c:2497 tipc_node_xmit+0x1b0/0xdac net/tipc/node.c:1703 tipc_node_xmit_skb net/tipc/node.c:1768 [inline] tipc_node_distr_xmit+0x28c/0x3a4 net/tipc/node.c:1783 tipc_sk_backlog_rcv+0x160/0x210 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1119 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2936 release_sock+0x68/0x1cc net/core/sock.c:3500 sk_setsockopt+0x25c4/0x3240 sock_setsockopt+0x68/0x80 net/core/sock.c:1547 __sys_setsockopt+0x3f8/0x70c net/socket.c:2284 __do_sys_setsockopt net/socket.c:2299 [inline] __se_sys_setsockopt net/socket.c:2296 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2296 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585