BUG: sleeping function called from invalid context at net/core/sock.c:3830
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 31, name: ksoftirqd/1
preempt_count: 0, expected: 0
RCU nest depth: 2, expected: 0
locks held by ksoftirqd/1/31: 4, last CPU#1:
 #0: ffffffff8e259320 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #1: ffffffff8e3c3880 (rcu_read_lock){....}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
 #2: ffffffff8e3c3880 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8e3c3880 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #2: ffffffff8e3c3880 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb_core+0x33/0x2b0 net/core/dev.c:6240
 #3: ffff88803b9a2358 (sk_lock-AF_X25){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1713 [inline]
 #3: ffff88803b9a2358 (sk_lock-AF_X25){+.+.}-{0:0}, at: x25_kill_by_neigh+0xab/0x160 net/x25/af_x25.c:1776
CPU: 1 UID: 0 PID: 31 Comm: ksoftirqd/1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 __might_resched+0x329/0x480 kernel/sched/core.c:9194
 lock_sock_nested+0x56/0x130 net/core/sock.c:3830
 lock_sock include/net/sock.h:1713 [inline]
 x25_kill_by_neigh+0xab/0x160 net/x25/af_x25.c:1776
 x25_lapb_receive_frame+0x1b0/0xf90 net/x25/x25_dev.c:138
 __netif_receive_skb_one_core net/core/dev.c:6216 [inline]
 netif_receive_skb_core+0x2a6/0x2b0 net/core/dev.c:6241
 lapbeth_napi_poll+0x45/0x90 drivers/net/wan/lapbether.c:100
 __napi_poll+0xae/0x550 net/core/dev.c:7739
 napi_poll net/core/dev.c:7802 [inline]
 net_rx_action+0x621/0xd70 net/core/dev.c:7959
 handle_softirqs+0x1d9/0x6c0 kernel/softirq.c:626
 run_ksoftirqd+0x52/0x180 kernel/softirq.c:1080
 smpboot_thread_fn+0x57c/0xa80 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>