watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:7383] Modules linked in: irq event stamp: 28582625 hardirqs last enabled at (28582624): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:387 hardirqs last disabled at (28582625): [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (28582625): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (924): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (924): [] tipc_skb_peek_port net/tipc/msg.h:1235 [inline] softirqs last enabled at (924): [] tipc_sk_rcv+0x34c/0x18b8 net/tipc/socket.c:2493 softirqs last disabled at (926): [] spin_trylock_bh include/linux/spinlock.h:411 [inline] softirqs last disabled at (926): [] tipc_sk_rcv+0x36c/0x18b8 net/tipc/socket.c:2498 CPU: 0 PID: 7383 Comm: syz-executor.4 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (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 : ffff80009fbb6470 x29: ffff80009fbb6480 x28: ffff80009fbb6660 x27: ffff0000edfcb980 x26: dfff800000000000 x25: 00000000ef172bdf x24: 0000000000000001 x23: 1fffe0001e21eb59 x22: dfff800000000000 x21: ffff80008a9186a8 x20: 0000000000000202 x19: ffff0000f10f5ac8 x18: ffff80009fbb64a0 x17: 000000000002d974 x16: ffff800080333944 x15: 0000000000000001 x14: 1fffe0001a55a8a8 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000201 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000001b422e0 x7 : ffff80008a9253f8 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff80008afffb40 x0 : ffff800124fc3000 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_trylock_bh include/linux/spinlock_api_smp.h:177 [inline] _raw_spin_trylock_bh+0x68/0x80 kernel/locking/spinlock.c:146 spin_trylock_bh include/linux/spinlock.h:411 [inline] tipc_sk_rcv+0x36c/0x18b8 net/tipc/socket.c:2498 tipc_node_xmit+0x1b0/0xdb0 net/tipc/node.c:1701 tipc_node_xmit_skb+0x138/0x1ac net/tipc/node.c:1766 tipc_sk_rcv+0x1658/0x18b8 net/tipc/socket.c:2524 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 tipc_release+0xf74/0x1478 net/tipc/socket.c:652 __sock_release net/socket.c:659 [inline] sock_close+0xa4/0x1e8 net/socket.c:1421 __fput+0x30c/0x738 fs/file_table.c:422 __fput_sync+0x60/0x9c fs/file_table.c:507 __do_sys_close fs/open.c:1556 [inline] __se_sys_close fs/open.c:1541 [inline] __arm64_sys_close+0x150/0x1e0 fs/open.c:1541 __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: 0 Comm: swapper/1 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:50 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff800093ce7d10 x29: ffff800093ce7d10 x28: dfff800000000000 x27: 1ffff0001279cfb0 x26: ffff80008eead000 x25: 0000000000000000 x24: 0000000000000002 x23: 1ffff00011dd5aad x22: ffff80008eead568 x21: 0000000000000000 x20: ffff0000c19e5ac0 x19: ffff8000802e1fa8 x18: 1fffe000367bd196 x17: ffff80008eead000 x16: ffff8000802e186c x15: 0000000000000001 x14: 1fffe000367beef9 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 000000000004d30d x7 : ffff800080478bfc x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008ae89860 x2 : 0000000000000000 x1 : ffff80008afffb40 x0 : ffff800124fe7000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1f0/0x4e4 kernel/sched/idle.c:332 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:430 secondary_start_kernel+0x1bc/0x1e4 arch/arm64/kernel/smp.c:279 __secondary_switched+0xb8/0xbc arch/arm64/kernel/head.S:417