------------[ cut here ]------------ WARNING: CPU: 1 PID: 40 at mm/page_alloc.c:4402 __alloc_pages+0x308/0x698 mm/page_alloc.c:4402 Modules linked in: CPU: 1 PID: 40 Comm: kworker/u4:2 Not tainted 6.6.0-rc7-syzkaller-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Workqueue: events_unbound flush_to_ldisc pstate: 204000c5 (nzCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __alloc_pages+0x308/0x698 mm/page_alloc.c:4402 lr : __alloc_pages+0xc8/0x698 mm/page_alloc.c:4396 sp : ffff8000941a7660 x29: ffff8000941a7740 x28: ffff8000941a7680 x27: dfff800000000000 x26: ffff700012834ed0 x25: 0000000000000000 x24: ffff8000941a76a0 x23: 0000000000000000 x22: 0000000000060820 x21: 1ffff00012834ed4 x20: ffff8000941a76c0 x19: 0000000000000013 x18: ffff8000941a7180 x17: ffff8000856f7184 x16: ffff80008a668b40 x15: 0000000000000005 x14: 1ffff00012834ed8 x13: 0000000000000000 x12: 0000000000000000 x11: ffff700012834edd x10: 1ffff00012834edc x9 : 0000000000000001 x8 : ffff8000910a2000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 00000000ffffffff x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff8000941a76c0 Call trace: __alloc_pages+0x308/0x698 mm/page_alloc.c:4402 __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_pages_node include/linux/gfp.h:260 [inline] __kmalloc_large_node+0xbc/0x1fc mm/slab_common.c:1167 __do_kmalloc_node mm/slab_common.c:1014 [inline] __kmalloc_node_track_caller+0x12c/0x1c0 mm/slab_common.c:1046 kmalloc_reserve+0x17c/0x23c net/core/skbuff.c:589 __alloc_skb+0x1c8/0x3d8 net/core/skbuff.c:650 __netdev_alloc_skb+0xb8/0x3e8 net/core/skbuff.c:714 netdev_alloc_skb include/linux/skbuff.h:3225 [inline] dev_alloc_skb include/linux/skbuff.h:3238 [inline] ppp_sync_input drivers/net/ppp/ppp_synctty.c:669 [inline] ppp_sync_receive+0x13c/0x7b0 drivers/net/ppp/ppp_synctty.c:334 tty_ldisc_receive_buf+0x12c/0x15c drivers/tty/tty_buffer.c:391 tty_port_default_receive_buf+0x74/0xac drivers/tty/tty_port.c:37 receive_buf drivers/tty/tty_buffer.c:445 [inline] flush_to_ldisc+0x284/0x6e4 drivers/tty/tty_buffer.c:495 process_one_work+0x694/0x1204 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2784 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857 irq event stamp: 322692 hardirqs last enabled at (322691): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (322691): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:202 hardirqs last disabled at (322692): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (322692): [] _raw_spin_lock_irqsave+0x2c/0x7c kernel/locking/spinlock.c:162 softirqs last enabled at (322392): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (322386): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- PPPsync: no memory (input pkt)