------------[ cut here ]------------ NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out 39070 ms WARNING: CPU: 1 PID: 20715 at net/sched/sch_generic.c:526 dev_watchdog+0x63c/0x688 net/sched/sch_generic.c:525 Modules linked in: CPU: 1 PID: 20715 Comm: syz-executor.0 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 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: fffffffffffff88d x26: ffff0000d1680800 x25: 0000000000000000 x24: 0000000000000110 x23: ffff0000d1680870 x22: 000000000000989e x21: ffff0000dae38000 x20: ffff0000dae38000 x19: ffff0000dae38548 x18: ffff800080017080 x17: 0000000000000000 x16: ffff80008a82b138 x15: 0000000000000001 x14: 1fffe0003682a63a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000103 x10: 0000000000ff0100 x9 : befacded857b3f00 x8 : befacded857b3f00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080017498 x4 : ffff80008e5d20c0 x3 : ffff8000805a9ecc x2 : 0000000000000001 x1 : 0000000000000101 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_restore arch/arm64/include/asm/irqflags.h:176 [inline] arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:196 lock_is_held include/linux/lockdep.h:288 [inline] __might_resched+0x48/0x4d0 kernel/sched/core.c:10113 __might_sleep+0x90/0xe4 kernel/sched/core.c:10080 might_alloc include/linux/sched/mm.h:306 [inline] prepare_alloc_pages+0x1a8/0x4fc mm/page_alloc.c:4339 __alloc_pages+0x150/0x698 mm/page_alloc.c:4557 alloc_pages_mpol+0x328/0x5dc mm/mempolicy.c:2133 shmem_alloc_folio mm/shmem.c:1630 [inline] shmem_alloc_and_add_folio+0x1e8/0xce0 mm/shmem.c:1670 shmem_get_folio_gfp+0x6d0/0x1670 mm/shmem.c:2054 shmem_get_folio mm/shmem.c:2136 [inline] shmem_write_begin+0x138/0x4bc mm/shmem.c:2719 generic_perform_write+0x28c/0x588 mm/filemap.c:3918 shmem_file_write_iter+0x110/0x138 mm/shmem.c:2895 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x610/0x910 fs/read_write.c:584 ksys_write+0x15c/0x26c fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:646 __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: 71463 hardirqs last enabled at (71462): [] __up_console_sem kernel/printk/printk.c:341 [inline] hardirqs last enabled at (71462): [] __console_unlock kernel/printk/printk.c:2706 [inline] hardirqs last enabled at (71462): [] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3038 hardirqs last disabled at (71463): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (63768): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (63768): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (71373): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- vkms_vblank_simulate: vblank timer overrun sl0: transmit timed out, driver error? vkms_vblank_simulate: vblank timer overrun