=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
5.15.124-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.2/4640 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire:
ffff800014b85880 (fs_reclaim){+.+.}-{0:0}, at: might_alloc include/linux/sched/mm.h:206 [inline]
ffff800014b85880 (fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492

and this task is already holding:
ffff0000c612b908 (&sch->q.lock){+.-.}-{2:2}, at: netem_change+0x22c/0x1a90 net/sched/sch_netem.c:972
which would create a new lock dependency:
 (&sch->q.lock){+.-.}-{2:2} -> (fs_reclaim){+.+.}-{0:0}

but this new dependency connects a SOFTIRQ-irq-safe lock:
 (&sch->q.lock){+.-.}-{2:2}

... which became SOFTIRQ-irq-safe at:
  lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
  __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
  _raw_spin_lock+0xb0/0x10c kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:363 [inline]
  dequeue_skb net/sched/sch_generic.c:240 [inline]
  qdisc_restart net/sched/sch_generic.c:397 [inline]
  __qdisc_run+0x934/0x1fc0 net/sched/sch_generic.c:415
  qdisc_run+0x40/0x200 include/net/pkt_sched.h:132
  net_tx_action+0x698/0x884 net/core/dev.c:5065
  __do_softirq+0x344/0xe20 kernel/softirq.c:558
  do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
  do_softirq+0x120/0x20c kernel/softirq.c:459
  __local_bh_enable_ip+0x2c0/0x4d0 kernel/softirq.c:383
  local_bh_enable+0x28/0x1d0 include/linux/bottom_half.h:32
  rcu_read_unlock_bh include/linux/rcupdate.h:766 [inline]
  ip_finish_output2+0xe8c/0x1330 net/ipv4/ip_output.c:229
  __ip_finish_output+0x1b0/0x458
  ip_finish_output+0x40/0x218 net/ipv4/ip_output.c:316
  NF_HOOK_COND include/linux/netfilter.h:291 [inline]
  ip_output+0x330/0x49c net/ipv4/ip_output.c:430
  dst_output include/net/dst.h:443 [inline]
  ip_local_out net/ipv4/ip_output.c:126 [inline]
  __ip_queue_xmit+0xe70/0x1930 net/ipv4/ip_output.c:532
  ip_queue_xmit+0x5c/0x78 net/ipv4/ip_output.c:546
  __tcp_transmit_skb+0x1954/0x3218 net/ipv4/tcp_output.c:1403
  tcp_transmit_skb net/ipv4/tcp_output.c:1421 [inline]
  tcp_write_xmit+0x12bc/0x4dc0 net/ipv4/tcp_output.c:2694
  __tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:2878
  tcp_push+0x41c/0x648 net/ipv4/tcp.c:736
  tcp_sendmsg_locked+0x2a68/0x313c net/ipv4/tcp.c:1432
  tcp_sendmsg+0x40/0x64 net/ipv4/tcp.c:1462
  inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:825
  sock_sendmsg_nosec net/socket.c:704 [inline]
  sock_sendmsg net/socket.c:724 [inline]
  sock_write_iter+0x2b0/0x3f8 net/socket.c:1060
  call_write_iter include/linux/fs.h:2103 [inline]
  new_sync_write fs/read_write.c:507 [inline]
  vfs_write+0x87c/0xb3c fs/read_write.c:594
  ksys_write+0x15c/0x26c fs/read_write.c:647
  __do_sys_write fs/read_write.c:659 [inline]
  __se_sys_write fs/read_write.c:656 [inline]
  __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
  __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
  invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
  el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
  do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
  el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
  el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
  el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

to a SOFTIRQ-irq-unsafe lock:
 (fs_reclaim){+.+.}-{0:0}

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
  __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
  fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
  might_alloc include/linux/sched/mm.h:206 [inline]
  slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
  slab_alloc_node mm/slub.c:3134 [inline]
  kmem_cache_alloc_node_trace+0xa0/0x4c4 mm/slub.c:3270
  kmalloc_node include/linux/slab.h:609 [inline]
  kzalloc_node include/linux/slab.h:732 [inline]
  alloc_worker kernel/workqueue.c:1861 [inline]
  init_rescuer+0xa4/0x264 kernel/workqueue.c:4279
  workqueue_init+0x2b4/0x640 kernel/workqueue.c:6136
  kernel_init_freeable+0x448/0x650 init/main.c:1603
  kernel_init+0x24/0x294 init/main.c:1510
  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

other info that might help us debug this:

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(fs_reclaim);
                               local_irq_disable();
                               lock(&sch->q.lock);
                               lock(fs_reclaim);
  <Interrupt>
    lock(&sch->q.lock);

 *** DEADLOCK ***

2 locks held by syz-executor.2/4640:
 #0: ffff8000169e7228 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffff8000169e7228 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0xa2c/0xdac net/core/rtnetlink.c:5596
 #1: ffff0000c612b908 (&sch->q.lock){+.-.}-{2:2}, at: netem_change+0x22c/0x1a90 net/sched/sch_netem.c:972

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&sch->q.lock){+.-.}-{2:2} {
   HARDIRQ-ON-W at:
                    lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
                    __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
                    _raw_spin_lock_bh+0x124/0x1c4 kernel/locking/spinlock.c:178
                    spin_lock_bh include/linux/spinlock.h:368 [inline]
                    dev_reset_queue+0xb4/0x190 net/sched/sch_generic.c:1245
                    netdev_for_each_tx_queue include/linux/netdevice.h:2379 [inline]
                    dev_deactivate_many+0x718/0xbe4 net/sched/sch_generic.c:1313
                    dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1336
                    linkwatch_do_dev+0x2a8/0x3c8 net/core/link_watch.c:165
                    __linkwatch_run_queue+0x424/0x730 net/core/link_watch.c:213
                    linkwatch_event+0x58/0x68 net/core/link_watch.c:252
                    process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
                    worker_thread+0x910/0x1034 kernel/workqueue.c:2457
                    kthread+0x37c/0x45c kernel/kthread.c:319
                    ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
   IN-SOFTIRQ-W at:
                    lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
                    __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                    _raw_spin_lock+0xb0/0x10c kernel/locking/spinlock.c:154
                    spin_lock include/linux/spinlock.h:363 [inline]
                    dequeue_skb net/sched/sch_generic.c:240 [inline]
                    qdisc_restart net/sched/sch_generic.c:397 [inline]
                    __qdisc_run+0x934/0x1fc0 net/sched/sch_generic.c:415
                    qdisc_run+0x40/0x200 include/net/pkt_sched.h:132
                    net_tx_action+0x698/0x884 net/core/dev.c:5065
                    __do_softirq+0x344/0xe20 kernel/softirq.c:558
                    do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
                    do_softirq+0x120/0x20c kernel/softirq.c:459
                    __local_bh_enable_ip+0x2c0/0x4d0 kernel/softirq.c:383
                    local_bh_enable+0x28/0x1d0 include/linux/bottom_half.h:32
                    rcu_read_unlock_bh include/linux/rcupdate.h:766 [inline]
                    ip_finish_output2+0xe8c/0x1330 net/ipv4/ip_output.c:229
                    __ip_finish_output+0x1b0/0x458
                    ip_finish_output+0x40/0x218 net/ipv4/ip_output.c:316
                    NF_HOOK_COND include/linux/netfilter.h:291 [inline]
                    ip_output+0x330/0x49c net/ipv4/ip_output.c:430
                    dst_output include/net/dst.h:443 [inline]
                    ip_local_out net/ipv4/ip_output.c:126 [inline]
                    __ip_queue_xmit+0xe70/0x1930 net/ipv4/ip_output.c:532
                    ip_queue_xmit+0x5c/0x78 net/ipv4/ip_output.c:546
                    __tcp_transmit_skb+0x1954/0x3218 net/ipv4/tcp_output.c:1403
                    tcp_transmit_skb net/ipv4/tcp_output.c:1421 [inline]
                    tcp_write_xmit+0x12bc/0x4dc0 net/ipv4/tcp_output.c:2694
                    __tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:2878
                    tcp_push+0x41c/0x648 net/ipv4/tcp.c:736
                    tcp_sendmsg_locked+0x2a68/0x313c net/ipv4/tcp.c:1432
                    tcp_sendmsg+0x40/0x64 net/ipv4/tcp.c:1462
                    inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:825
                    sock_sendmsg_nosec net/socket.c:704 [inline]
                    sock_sendmsg net/socket.c:724 [inline]
                    sock_write_iter+0x2b0/0x3f8 net/socket.c:1060
                    call_write_iter include/linux/fs.h:2103 [inline]
                    new_sync_write fs/read_write.c:507 [inline]
                    vfs_write+0x87c/0xb3c fs/read_write.c:594
                    ksys_write+0x15c/0x26c fs/read_write.c:647
                    __do_sys_write fs/read_write.c:659 [inline]
                    __se_sys_write fs/read_write.c:656 [inline]
                    __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
                    __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
                    invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
                    el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
                    do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
                    el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
                    el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
                    el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
   INITIAL USE at:
                   lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
                   __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
                   _raw_spin_lock_bh+0x124/0x1c4 kernel/locking/spinlock.c:178
                   spin_lock_bh include/linux/spinlock.h:368 [inline]
                   dev_reset_queue+0xb4/0x190 net/sched/sch_generic.c:1245
                   netdev_for_each_tx_queue include/linux/netdevice.h:2379 [inline]
                   dev_deactivate_many+0x718/0xbe4 net/sched/sch_generic.c:1313
                   dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1336
                   linkwatch_do_dev+0x2a8/0x3c8 net/core/link_watch.c:165
                   __linkwatch_run_queue+0x424/0x730 net/core/link_watch.c:213
                   linkwatch_event+0x58/0x68 net/core/link_watch.c:252
                   process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
                   worker_thread+0x910/0x1034 kernel/workqueue.c:2457
                   kthread+0x37c/0x45c kernel/kthread.c:319
                   ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
 }
 ... key      at: [<ffff8000187df340>] qdisc_alloc.__key+0x0/0x20

the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
-> (fs_reclaim){+.+.}-{0:0} {
   HARDIRQ-ON-W at:
                    lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
                    __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
                    fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
                    might_alloc include/linux/sched/mm.h:206 [inline]
                    slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
                    slab_alloc_node mm/slub.c:3134 [inline]
                    kmem_cache_alloc_node_trace+0xa0/0x4c4 mm/slub.c:3270
                    kmalloc_node include/linux/slab.h:609 [inline]
                    kzalloc_node include/linux/slab.h:732 [inline]
                    alloc_worker kernel/workqueue.c:1861 [inline]
                    init_rescuer+0xa4/0x264 kernel/workqueue.c:4279
                    workqueue_init+0x2b4/0x640 kernel/workqueue.c:6136
                    kernel_init_freeable+0x448/0x650 init/main.c:1603
                    kernel_init+0x24/0x294 init/main.c:1510
                    ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
   SOFTIRQ-ON-W at:
                    lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
                    __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
                    fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
                    might_alloc include/linux/sched/mm.h:206 [inline]
                    slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
                    slab_alloc_node mm/slub.c:3134 [inline]
                    kmem_cache_alloc_node_trace+0xa0/0x4c4 mm/slub.c:3270
                    kmalloc_node include/linux/slab.h:609 [inline]
                    kzalloc_node include/linux/slab.h:732 [inline]
                    alloc_worker kernel/workqueue.c:1861 [inline]
                    init_rescuer+0xa4/0x264 kernel/workqueue.c:4279
                    workqueue_init+0x2b4/0x640 kernel/workqueue.c:6136
                    kernel_init_freeable+0x448/0x650 init/main.c:1603
                    kernel_init+0x24/0x294 init/main.c:1510
                    ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
   INITIAL USE at:
                   lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
                   __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
                   fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
                   might_alloc include/linux/sched/mm.h:206 [inline]
                   slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
                   slab_alloc_node mm/slub.c:3134 [inline]
                   kmem_cache_alloc_node_trace+0xa0/0x4c4 mm/slub.c:3270
                   kmalloc_node include/linux/slab.h:609 [inline]
                   kzalloc_node include/linux/slab.h:732 [inline]
                   alloc_worker kernel/workqueue.c:1861 [inline]
                   init_rescuer+0xa4/0x264 kernel/workqueue.c:4279
                   workqueue_init+0x2b4/0x640 kernel/workqueue.c:6136
                   kernel_init_freeable+0x448/0x650 init/main.c:1603
                   kernel_init+0x24/0x294 init/main.c:1510
                   ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
 }
 ... key      at: [<ffff800014b85880>] __fs_reclaim_map+0x0/0x200
 ... acquired at:
   __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
   fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
   might_alloc include/linux/sched/mm.h:206 [inline]
   slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
   slab_alloc_node mm/slub.c:3134 [inline]
   __kmalloc_node+0xbc/0x5b8 mm/slub.c:4451
   kmalloc_node include/linux/slab.h:614 [inline]
   kvmalloc_node+0x88/0x204 mm/util.c:619
   kvmalloc include/linux/mm.h:805 [inline]
   get_dist_table+0x9c/0x2a4 net/sched/sch_netem.c:788
   netem_change+0x7cc/0x1a90 net/sched/sch_netem.c:988
   netem_init+0x54/0xb8 net/sched/sch_netem.c:1075
   qdisc_create+0x6fc/0xf44 net/sched/sch_api.c:1264
   tc_modify_qdisc+0x8dc/0x1344
   rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5599
   netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2505
   rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5617
   netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
   netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356
   netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1924
   sock_sendmsg_nosec net/socket.c:704 [inline]
   sock_sendmsg net/socket.c:724 [inline]
   ____sys_sendmsg+0x584/0x870 net/socket.c:2412
   ___sys_sendmsg+0x214/0x294 net/socket.c:2466
   __sys_sendmsg net/socket.c:2495 [inline]
   __do_sys_sendmsg net/socket.c:2504 [inline]
   __se_sys_sendmsg net/socket.c:2502 [inline]
   __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2502
   __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
   invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
   el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
   do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
   el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
   el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
   el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584


stack backtrace:
CPU: 1 PID: 4640 Comm: syz-executor.2 Not tainted 5.15.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 __lock_acquire+0x62b4/0x7620 kernel/locking/lockdep.c:5011
 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622
 __fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
 fs_reclaim_acquire+0xf0/0x1d0 mm/page_alloc.c:4561
 might_alloc include/linux/sched/mm.h:206 [inline]
 slab_pre_alloc_hook+0x38/0xe8 mm/slab.h:492
 slab_alloc_node mm/slub.c:3134 [inline]
 __kmalloc_node+0xbc/0x5b8 mm/slub.c:4451
 kmalloc_node include/linux/slab.h:614 [inline]
 kvmalloc_node+0x88/0x204 mm/util.c:619
 kvmalloc include/linux/mm.h:805 [inline]
 get_dist_table+0x9c/0x2a4 net/sched/sch_netem.c:788
 netem_change+0x7cc/0x1a90 net/sched/sch_netem.c:988
 netem_init+0x54/0xb8 net/sched/sch_netem.c:1075
 qdisc_create+0x6fc/0xf44 net/sched/sch_api.c:1264
 tc_modify_qdisc+0x8dc/0x1344
 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5599
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2505
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5617
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1924
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x584/0x870 net/socket.c:2412
 ___sys_sendmsg+0x214/0x294 net/socket.c:2466
 __sys_sendmsg net/socket.c:2495 [inline]
 __do_sys_sendmsg net/socket.c:2504 [inline]
 __se_sys_sendmsg net/socket.c:2502 [inline]
 __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2502
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:209
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4640, name: syz-executor.2
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff800010046d84>] netem_change+0x22c/0x1a90 net/sched/sch_netem.c:972
CPU: 1 PID: 4640 Comm: syz-executor.2 Not tainted 5.15.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 ___might_sleep+0x380/0x4dc kernel/sched/core.c:9625
 __might_sleep+0x98/0xf0 kernel/sched/core.c:9579
 might_alloc include/linux/sched/mm.h:209 [inline]
 slab_pre_alloc_hook+0x58/0xe8 mm/slab.h:492
 slab_alloc_node mm/slub.c:3134 [inline]
 __kmalloc_node+0xbc/0x5b8 mm/slub.c:4451
 kmalloc_node include/linux/slab.h:614 [inline]
 kvmalloc_node+0x88/0x204 mm/util.c:619
 kvmalloc include/linux/mm.h:805 [inline]
 get_dist_table+0x9c/0x2a4 net/sched/sch_netem.c:788
 netem_change+0x7cc/0x1a90 net/sched/sch_netem.c:988
 netem_init+0x54/0xb8 net/sched/sch_netem.c:1075
 qdisc_create+0x6fc/0xf44 net/sched/sch_api.c:1264
 tc_modify_qdisc+0x8dc/0x1344
 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5599
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2505
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5617
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1924
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x584/0x870 net/socket.c:2412
 ___sys_sendmsg+0x214/0x294 net/socket.c:2466
 __sys_sendmsg net/socket.c:2495 [inline]
 __do_sys_sendmsg net/socket.c:2504 [inline]
 __se_sys_sendmsg net/socket.c:2502 [inline]
 __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2502
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584