Warning: Permanently added '10.128.0.140' (ED25519) to the list of known hosts.
executing program
[   42.012912][ T3962] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:209
[   42.015458][ T3962] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3962, name: syz-executor413
[   42.017931][ T3962] 2 locks held by syz-executor413/3962:
[   42.019393][ T3962]  #0: ffff8000169e74a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0xa2c/0xdac
[   42.021917][ T3962]  #1: ffff0000d8b3f908 (&sch->q.lock){+...}-{2:2}, at: netem_change+0x22c/0x1a90
[   42.024413][ T3962] Preemption disabled at:
[   42.024426][ T3962] [<ffff800010045e3c>] netem_change+0x22c/0x1a90
[   42.027209][ T3962] CPU: 0 PID: 3962 Comm: syz-executor413 Not tainted 5.15.126-syzkaller-00092-g24c4de4069cb #0
[   42.029846][ T3962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
[   42.032506][ T3962] Call trace:
[   42.033347][ T3962]  dump_backtrace+0x0/0x530
[   42.034512][ T3962]  show_stack+0x2c/0x3c
[   42.035604][ T3962]  dump_stack_lvl+0x108/0x170
[   42.036874][ T3962]  dump_stack+0x1c/0x58
[   42.037954][ T3962]  ___might_sleep+0x380/0x4dc
[   42.039168][ T3962]  __might_sleep+0x98/0xf0
[   42.040354][ T3962]  slab_pre_alloc_hook+0x58/0xe8
[   42.041640][ T3962]  __kmalloc_node+0xbc/0x5b8
[   42.042834][ T3962]  kvmalloc_node+0x88/0x204
[   42.043972][ T3962]  get_dist_table+0x9c/0x2a4
[   42.045167][ T3962]  netem_change+0x820/0x1a90
[   42.046381][ T3962]  netem_init+0x54/0xb8
[   42.047457][ T3962]  qdisc_create+0x6fc/0xf44
[   42.048605][ T3962]  tc_modify_qdisc+0x8dc/0x1344
[   42.049904][ T3962]  rtnetlink_rcv_msg+0xa74/0xdac
[   42.051224][ T3962]  netlink_rcv_skb+0x20c/0x3b8
[   42.052485][ T3962]  rtnetlink_rcv+0x28/0x38
[   42.053620][ T3962]  netlink_unicast+0x664/0x938
[   42.054869][ T3962]  netlink_sendmsg+0x844/0xb38
[   42.056101][ T3962]  ____sys_sendmsg+0x584/0x870
[   42.057386][ T3962]  ___sys_sendmsg+0x214/0x294
[   42.058638][ T3962]  __arm64_sys_sendmsg+0x1ac/0x25c
[   42.059973][ T3962]  invoke_syscall+0x98/0x2b8
[   42.061201][ T3962]  el0_svc_common+0x138/0x258
[   42.062527][ T3962]  do_el0_svc+0x58/0x14c
[   42.063636][ T3962]  el0_svc+0x7c/0x1f0
[   42.064647][ T3962]  el0t_64_sync_handler+0x84/0xe4
[   42.065994][ T3962]  el0t_64_sync+0x1a0/0x1a4
[   42.067345][ T3962] 
[   42.067908][ T3962] ============================================
[   42.069480][ T3962] WARNING: possible recursive locking detected
[   42.071036][ T3962] 5.15.126-syzkaller-00092-g24c4de4069cb #0 Tainted: G        W        
[   42.073127][ T3962] --------------------------------------------
[   42.074717][ T3962] syz-executor413/3962 is trying to acquire lock:
[   42.076391][ T3962] ffff0000d8b3f908 (&sch->q.lock){+...}-{2:2}, at: get_dist_table+0x1f0/0x2a4
[   42.078659][ T3962] 
[   42.078659][ T3962] but task is already holding lock:
[   42.080613][ T3962] ffff0000d8b3f908 (&sch->q.lock){+...}-{2:2}, at: netem_change+0x22c/0x1a90
[   42.082925][ T3962] 
[   42.082925][ T3962] other info that might help us debug this:
[   42.084978][ T3962]  Possible unsafe locking scenario:
[   42.084978][ T3962] 
[   42.086922][ T3962]        CPU0
[   42.087756][ T3962]        ----
[   42.088589][ T3962]   lock(&sch->q.lock);
[   42.089646][ T3962]   lock(&sch->q.lock);
[   42.090756][ T3962] 
[   42.090756][ T3962]  *** DEADLOCK ***
[   42.090756][ T3962] 
[   42.092861][ T3962]  May be due to missing lock nesting notation
[   42.092861][ T3962] 
[   42.095019][ T3962] 2 locks held by syz-executor413/3962:
[   42.096450][ T3962]  #0: ffff8000169e74a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0xa2c/0xdac
[   42.098893][ T3962]  #1: ffff0000d8b3f908 (&sch->q.lock){+...}-{2:2}, at: netem_change+0x22c/0x1a90
[   42.101280][ T3962] 
[   42.101280][ T3962] stack backtrace:
[   42.102779][ T3962] CPU: 0 PID: 3962 Comm: syz-executor413 Tainted: G        W         5.15.126-syzkaller-00092-g24c4de4069cb #0
[   42.105866][ T3962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
[   42.108480][ T3962] Call trace:
[   42.109345][ T3962]  dump_backtrace+0x0/0x530
[   42.110539][ T3962]  show_stack+0x2c/0x3c
[   42.111592][ T3962]  dump_stack_lvl+0x108/0x170
[   42.112862][ T3962]  dump_stack+0x1c/0x58
[   42.113913][ T3962]  __lock_acquire+0x62b4/0x7620
[   42.115233][ T3962]  lock_acquire+0x240/0x77c
[   42.116434][ T3962]  _raw_spin_lock_bh+0x124/0x1c4
[   42.117744][ T3962]  get_dist_table+0x1f0/0x2a4
[   42.118934][ T3962]  netem_change+0x820/0x1a90
[   42.120147][ T3962]  netem_init+0x54/0xb8
[   42.121191][ T3962]  qdisc_create+0x6fc/0xf44
[   42.122433][ T3962]  tc_modify_qdisc+0x8dc/0x1344
[   42.123642][ T3962]  rtnetlink_rcv_msg+0xa74/0xdac
[   42.124893][ T3962]  netlink_rcv_skb+0x20c/0x3b8
[   42.126162][ T3962]  rtnetlink_rcv+0x28/0x38
[   42.127306][ T3962]  netlink_unicast+0x664/0x938
[   42.128517][ T3962]  netlink_sendmsg+0x844/0xb38
[   42.129741][ T3962]  ____sys_sendmsg+0x584/0x870
[   42.130991][ T3962]  ___sys_sendmsg+0x214/0x294
[   42.132232][ T3962]  __arm64_sys_sendmsg+0x1ac/0x25c
[   42.133565][ T3962]  invoke_syscall+0x98/0x2b8
[   42.134745][ T3962]  el0_svc_common+0x138/0x258
[   42.135969][ T3962]  do_el0_svc+0x58/0x14c
[   42.137074][ T3962]  el0_svc+0x7c/0x1f0
[   42.138110][ T3962]  el0t_64_sync_handler+0x84/0xe4
[   42.139428][ T3962]  el0t_64_sync+0x1a0/0x1a4