watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor170:5928] Modules linked in: irq event stamp: 18589181 hardirqs last enabled at (18589180): [] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388 hardirqs last disabled at (18589181): [] enter_el1_irq_or_nmi+0x10/0x1c arch/arm64/kernel/entry-common.c:227 softirqs last enabled at (178): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (178): [] tipc_skb_peek_port net/tipc/msg.h:1258 [inline] softirqs last enabled at (178): [] tipc_sk_rcv+0x34c/0x1930 net/tipc/socket.c:2491 softirqs last disabled at (180): [] spin_trylock_bh include/linux/spinlock.h:423 [inline] softirqs last disabled at (180): [] tipc_sk_rcv+0x36c/0x1930 net/tipc/socket.c:2496 CPU: 1 PID: 5928 Comm: syz-executor170 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : lock_acquire+0x280/0x77c lr : lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline] lr : lock_acquire+0x24c/0x77c kernel/locking/lockdep.c:5625 sp : ffff800023616120 x29: ffff800023616210 x28: ffff7000046c2c2c x27: 0000000000000000 x26: ffff0001b4196d00 x25: ffff800014d42360 x24: 0000000000000000 x23: 0000000000000201 x22: ffff0000d8560000 x21: ffff800014ac3d00 x20: dfff800000000000 x19: ffff0001b4196d00 x18: 0000000000000402 x17: 0000000000000000 x16: ffff800011b4f164 x15: ffff80000fef4000 x14: 1ffff0000296e06c x13: dfff800000000000 x12: 000000003598da8a x11: 0000000000000201 x10: 0000000000000003 x9 : 0000000000000080 x8 : 00000000000000c0 x7 : ffff8000117011b0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff800011cabfc0 x0 : 0000000000000001 Call trace: arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline] lock_acquire+0x280/0x77c kernel/locking/lockdep.c:5626 rcu_lock_acquire+0x40/0x4c include/linux/rcupdate.h:312 rcu_read_lock include/linux/rcupdate.h:739 [inline] tipc_sk_lookup+0xc8/0x8c4 net/tipc/socket.c:2998 tipc_sk_rcv+0x358/0x1930 net/tipc/socket.c:2492 tipc_node_xmit+0x1b0/0xde4 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+0x12f0/0x1930 net/tipc/socket.c:2501 tipc_node_xmit+0x1b0/0xde4 net/tipc/node.c:1703 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline] tipc_sk_filter_connect net/tipc/socket.c:2255 [inline] tipc_sk_filter_rcv+0x1700/0x2c58 net/tipc/socket.c:2364 tipc_sk_enqueue net/tipc/socket.c:2445 [inline] tipc_sk_rcv+0x6d0/0x1930 net/tipc/socket.c:2497 tipc_node_xmit+0x1b0/0xde4 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+0x164/0x220 net/tipc/socket.c:2412 sk_backlog_rcv include/net/sock.h:1061 [inline] __release_sock+0x1a8/0x408 net/core/sock.c:2727 release_sock+0x68/0x270 net/core/sock.c:3268 sock_setsockopt+0x1e50/0x28e4 net/core/sock.c:1381 __sys_setsockopt+0x3f8/0x6b4 net/socket.c:2199 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584