Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts. executing program [ 37.678728][ T4217] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274 [ 37.681288][ T4217] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4217, name: syz-executor131 [ 37.683731][ T4217] preempt_count: 201, expected: 0 [ 37.685062][ T4217] RCU nest depth: 0, expected: 0 [ 37.686351][ T4217] 2 locks held by syz-executor131/4217: [ 37.687749][ T4217] #0: ffff800017e6fdc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e8/0xd94 [ 37.690173][ T4217] #1: ffff0000d479c908 (&sch->q.lock){+...}-{2:2}, at: sch_tree_lock+0x120/0x1d4 [ 37.692680][ T4217] Preemption disabled at: [ 37.692691][ T4217] [] sch_tree_lock+0x120/0x1d4 [ 37.695444][ T4217] CPU: 0 PID: 4217 Comm: syz-executor131 Not tainted 6.1.45-syzkaller #0 [ 37.697641][ T4217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 37.700152][ T4217] Call trace: [ 37.700961][ T4217] dump_backtrace+0x1c8/0x1f4 [ 37.702110][ T4217] show_stack+0x2c/0x3c [ 37.703160][ T4217] dump_stack_lvl+0x108/0x170 [ 37.704388][ T4217] dump_stack+0x1c/0x58 [ 37.705433][ T4217] __might_resched+0x37c/0x4d8 [ 37.706644][ T4217] __might_sleep+0x90/0xe4 [ 37.707749][ T4217] __kmem_cache_alloc_node+0x74/0x388 [ 37.709195][ T4217] __kmalloc_node+0xcc/0x1d0 [ 37.710401][ T4217] kvmalloc_node+0x84/0x1e4 [ 37.711595][ T4217] get_dist_table+0xa0/0x354 [ 37.712796][ T4217] netem_change+0x7a4/0x1900 [ 37.713959][ T4217] netem_init+0x54/0xb8 [ 37.715028][ T4217] qdisc_create+0x70c/0xe64 [ 37.716168][ T4217] tc_modify_qdisc+0x9f0/0x1840 [ 37.717460][ T4217] rtnetlink_rcv_msg+0x72c/0xd94 [ 37.718781][ T4217] netlink_rcv_skb+0x20c/0x3b8 [ 37.720045][ T4217] rtnetlink_rcv+0x28/0x38 [ 37.721224][ T4217] netlink_unicast+0x660/0x8d4 [ 37.722419][ T4217] netlink_sendmsg+0x834/0xb18 [ 37.723626][ T4217] ____sys_sendmsg+0x558/0x844 [ 37.724898][ T4217] __sys_sendmsg+0x26c/0x33c [ 37.726079][ T4217] __arm64_sys_sendmsg+0x80/0x94 [ 37.727382][ T4217] invoke_syscall+0x98/0x2c0 [ 37.728606][ T4217] el0_svc_common+0x138/0x258 [ 37.729832][ T4217] do_el0_svc+0x64/0x218 [ 37.730915][ T4217] el0_svc+0x58/0x168 [ 37.731957][ T4217] el0t_64_sync_handler+0x84/0xf0 [ 37.733289][ T4217] el0t_64_sync+0x18c/0x190 [ 37.734589][ T4217] [ 37.735165][ T4217] ============================================ [ 37.736724][ T4217] WARNING: possible recursive locking detected [ 37.738222][ T4217] 6.1.45-syzkaller #0 Tainted: G W [ 37.739911][ T4217] -------------------------------------------- [ 37.741485][ T4217] syz-executor131/4217 is trying to acquire lock: [ 37.743144][ T4217] ffff0000d479c908 (&sch->q.lock){+...}-{2:2}, at: get_dist_table+0x240/0x354 [ 37.745466][ T4217] [ 37.745466][ T4217] but task is already holding lock: [ 37.747402][ T4217] ffff0000d479c908 (&sch->q.lock){+...}-{2:2}, at: sch_tree_lock+0x120/0x1d4 [ 37.749743][ T4217] [ 37.749743][ T4217] other info that might help us debug this: [ 37.751752][ T4217] Possible unsafe locking scenario: [ 37.751752][ T4217] [ 37.753626][ T4217] CPU0 [ 37.754448][ T4217] ---- [ 37.755339][ T4217] lock(&sch->q.lock); [ 37.756432][ T4217] lock(&sch->q.lock); [ 37.757487][ T4217] [ 37.757487][ T4217] *** DEADLOCK *** [ 37.757487][ T4217] [ 37.759579][ T4217] May be due to missing lock nesting notation [ 37.759579][ T4217] [ 37.761652][ T4217] 2 locks held by syz-executor131/4217: [ 37.763081][ T4217] #0: ffff800017e6fdc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e8/0xd94 [ 37.765631][ T4217] #1: ffff0000d479c908 (&sch->q.lock){+...}-{2:2}, at: sch_tree_lock+0x120/0x1d4 [ 37.768055][ T4217] [ 37.768055][ T4217] stack backtrace: [ 37.769578][ T4217] CPU: 0 PID: 4217 Comm: syz-executor131 Tainted: G W 6.1.45-syzkaller #0 [ 37.772111][ T4217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 [ 37.774774][ T4217] Call trace: [ 37.775590][ T4217] dump_backtrace+0x1c8/0x1f4 [ 37.776815][ T4217] show_stack+0x2c/0x3c [ 37.777867][ T4217] dump_stack_lvl+0x108/0x170 [ 37.779067][ T4217] dump_stack+0x1c/0x58 [ 37.780117][ T4217] __lock_acquire+0x6310/0x764c [ 37.781368][ T4217] lock_acquire+0x26c/0x7cc [ 37.782506][ T4217] _raw_spin_lock_bh+0x54/0x6c [ 37.783742][ T4217] get_dist_table+0x240/0x354 [ 37.784911][ T4217] netem_change+0x7a4/0x1900 [ 37.786076][ T4217] netem_init+0x54/0xb8 [ 37.787199][ T4217] qdisc_create+0x70c/0xe64 [ 37.788402][ T4217] tc_modify_qdisc+0x9f0/0x1840 [ 37.789653][ T4217] rtnetlink_rcv_msg+0x72c/0xd94 [ 37.790950][ T4217] netlink_rcv_skb+0x20c/0x3b8 [ 37.792156][ T4217] rtnetlink_rcv+0x28/0x38 [ 37.793299][ T4217] netlink_unicast+0x660/0x8d4 [ 37.794576][ T4217] netlink_sendmsg+0x834/0xb18 [ 37.795791][ T4217] ____sys_sendmsg+0x558/0x844 [ 37.797004][ T4217] __sys_sendmsg+0x26c/0x33c [ 37.798199][ T4217] __arm64_sys_sendmsg+0x80/0x94 [ 37.799437][ T4217] invoke_syscall+0x98/0x2c0 [ 37.800682][ T4217] el0_svc_common+0x138/0x258 [ 37.802021][ T4217] do_el0_svc+0x64/0x218 [ 37.803168][ T4217] el0_svc+0x58/0x168 [ 37.804191][ T4217] el0t_64_sync_handler+0x84/0xf0 [ 37.805548][ T4217] el0t_64_sync+0x18c/0x190