watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:24519] Modules linked in: irq event stamp: 30542329 hardirqs last enabled at (30542328): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:387 hardirqs last disabled at (30542329): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (30542329): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (1222): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (1222): [] tipc_skb_peek_port net/tipc/msg.h:1235 [inline] softirqs last enabled at (1222): [] tipc_sk_rcv+0x34c/0x18b8 net/tipc/socket.c:2493 softirqs last disabled at (1224): [] spin_trylock_bh include/linux/spinlock.h:411 [inline] softirqs last disabled at (1224): [] tipc_sk_rcv+0x36c/0x18b8 net/tipc/socket.c:2498 CPU: 0 PID: 24519 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00050-g6a71d2909427 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80401005 (Nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline] pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:389 lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:387 sp : ffff8000a0b46290 x29: ffff8000a0b462a0 x28: ffff8000a0b46480 x27: ffff0000d9730000 x26: dfff800000000000 x25: 00000000093dd49b x24: 0000000000000001 x23: 1fffe0001b000b59 x22: dfff800000000000 x21: ffff80008a901fb4 x20: 0000000000000202 x19: ffff0000d8005ac8 x18: ffff8000a0b462e0 x17: 0000000000019c2e x16: ffff800080333fec x15: 0000000000000001 x14: 1ffff00014168d03 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000201 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000001d209f8 x7 : ffff80008a901e4c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008afdfb40 x0 : ffff800124ff9000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:387 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] tipc_skb_peek_port net/tipc/msg.h:1235 [inline] tipc_sk_rcv+0x34c/0x18b8 net/tipc/socket.c:2493 tipc_node_xmit+0x1b0/0xdb0 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x28c/0x3a4 net/tipc/node.c:1781 tipc_sk_rcv+0x12b0/0x18b8 net/tipc/socket.c:2503 tipc_node_xmit+0x1b0/0xdb0 net/tipc/node.c:1701 tipc_sk_push_backlog net/tipc/socket.c:1316 [inline] tipc_sk_filter_connect net/tipc/socket.c:2257 [inline] tipc_sk_filter_rcv+0x1718/0x2ca0 net/tipc/socket.c:2366 tipc_sk_enqueue net/tipc/socket.c:2447 [inline] tipc_sk_rcv+0x6d0/0x18b8 net/tipc/socket.c:2499 tipc_node_xmit+0x1b0/0xdb0 net/tipc/node.c:1701 tipc_node_xmit_skb net/tipc/node.c:1766 [inline] tipc_node_distr_xmit+0x28c/0x3a4 net/tipc/node.c:1781 tipc_sk_backlog_rcv+0x164/0x214 net/tipc/socket.c:2414 sk_backlog_rcv include/net/sock.h:1106 [inline] __release_sock+0x1a8/0x3d8 net/core/sock.c:2984 release_sock+0x68/0x1b8 net/core/sock.c:3550 sk_setsockopt+0xbdc/0x306c sock_setsockopt+0x68/0x80 net/core/sock.c:1549 do_sock_setsockopt+0x238/0x4e0 net/socket.c:2307 __sys_setsockopt+0x128/0x1a8 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2340 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 24520 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00050-g6a71d2909427 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 00401005 (nzcv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--) pc : queued_spin_lock_slowpath+0x15c/0xd38 kernel/locking/qspinlock.c:383 lr : queued_spin_lock_slowpath+0x168/0xd38 kernel/locking/qspinlock.c:383 sp : ffff8000a04e76c0 x29: ffff8000a04e7760 x28: 1fffe0001a11c038 x27: 1ffff0001409cee4 x26: dfff800000000000 x25: 1fffe0001a11c03a x24: ffff8000a04e76e0 x23: ffff8000a04e7720 x22: ffff70001409cedc x21: 0000000000000001 x20: 0000000000000001 x19: ffff0000d08e01c0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800080a4cd48 x15: 0000000000000001 x14: 1fffe0001a11c038 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001a11c039 x10: 1fffe0001a11c038 x9 : 0000000000000000 x8 : 0000000000000001 x7 : ffff800088fbad40 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80008af65f0c x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: __cmpwait_case_8 arch/arm64/include/asm/cmpxchg.h:229 [inline] __cmpwait arch/arm64/include/asm/cmpxchg.h:257 [inline] queued_spin_lock_slowpath+0x15c/0xd38 kernel/locking/qspinlock.c:383 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x320/0x348 kernel/locking/spinlock_debug.c:116 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline] _raw_spin_lock_bh+0x50/0x60 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] lock_sock_nested+0x74/0x11c net/core/sock.c:3538 lock_sock include/net/sock.h:1671 [inline] tipc_sendstream+0x50/0x84 net/tipc/socket.c:1549 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x56c/0x840 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x26c/0x33c net/socket.c:2667 __do_sys_sendmsg net/socket.c:2676 [inline] __se_sys_sendmsg net/socket.c:2674 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2674 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598