------------[ cut here ]------------ NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out 24070 ms WARNING: CPU: 1 PID: 10219 at net/sched/sch_generic.c:526 dev_watchdog+0x63c/0x688 net/sched/sch_generic.c:525 Modules linked in: CPU: 1 PID: 10219 Comm: syz-executor.5 Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dev_watchdog+0x63c/0x688 net/sched/sch_generic.c:525 lr : dev_watchdog+0x63c/0x688 net/sched/sch_generic.c:525 sp : ffff800080017bb0 x29: ffff800080017be0 x28: dfff800000000000 x27: fffffffffffffe69 x26: ffff0000cfb62400 x25: 0000000000000000 x24: 0000000000000110 x23: ffff0000cfb62470 x22: 0000000000005e06 x21: ffff0000d640e000 x20: ffff0000d640e000 x19: ffff0000d640e548 x18: ffff800080017080 x17: 0000000000000000 x16: ffff80008a830eb8 x15: 0000000000000001 x14: 1fffe0003682a63a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000104 x10: 0000000000ff0100 x9 : a95358bde5a01300 x8 : a95358bde5a01300 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080017498 x4 : ffff80008e5d20c0 x3 : ffff8000805ab6bc x2 : 0000000000000001 x1 : 0000000000000102 x0 : 0000000000000000 Call trace: dev_watchdog+0x63c/0x688 net/sched/sch_generic.c:525 call_timer_fn+0x19c/0x8cc kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x55c/0x734 kernel/time/timer.c:2022 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:2035 __do_softirq+0x2d8/0xce4 kernel/softirq.c:553 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:886 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:434 [inline] __irq_exit_rcu+0x1d8/0x434 kernel/softirq.c:632 irq_exit_rcu+0x14/0x84 kernel/softirq.c:644 __el1_irq arch/arm64/kernel/entry-common.c:503 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:517 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:522 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:591 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable arch/arm64/include/asm/irqflags.h:49 [inline] raw_spin_rq_unlock_irq kernel/sched/sched.h:1361 [inline] finish_lock_switch+0xc0/0x1e4 kernel/sched/core.c:5130 finish_task_switch+0x120/0x614 kernel/sched/core.c:5248 context_switch kernel/sched/core.c:5379 [inline] __schedule+0x1358/0x2360 kernel/sched/core.c:6688 preempt_schedule_common+0xe8/0x1dc kernel/sched/core.c:6865 preempt_schedule+0x60/0x80 kernel/sched/core.c:6889 __slab_alloc mm/slub.c:3324 [inline] __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] kmem_cache_alloc_node+0x320/0x458 mm/slub.c:3523 kmalloc_reserve+0xb4/0x23c net/core/skbuff.c:560 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] __ip6_append_data+0x2218/0x33f4 net/ipv6/ip6_output.c:1647 ip6_append_data+0x210/0x33c net/ipv6/ip6_output.c:1832 rawv6_sendmsg+0x122c/0x1be8 net/ipv6/raw.c:913 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:847 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_sendmmsg+0x318/0x7d8 net/socket.c:2724 __do_sys_sendmmsg net/socket.c:2753 [inline] __se_sys_sendmmsg net/socket.c:2750 [inline] __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2750 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 81839 hardirqs last enabled at (81838): [] __up_console_sem kernel/printk/printk.c:341 [inline] hardirqs last enabled at (81838): [] __console_unlock kernel/printk/printk.c:2706 [inline] hardirqs last enabled at (81838): [] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3038 hardirqs last disabled at (81839): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (81792): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (81792): [] lock_sock_nested+0xcc/0x11c net/core/sock.c:3526 softirqs last disabled at (81813): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- sl0: transmit timed out, driver error? sl2: transmit timed out, driver error? TCP: request_sock_subflow_v4: Possible SYN flooding on port [::]:20002. Sending cookies. TCP: request_sock_subflow_v4: Possible SYN flooding on port [::]:20002. Sending cookies.