syzbot

rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10499 ticks this GP) idle=902c/1/0x4000000000000000 softirq=46291/46292 fqs=2
rcu: 	(t=10500 jiffies g=51981 q=70 ncpus=2)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10495 jiffies! g51981 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=46339
rcu: rcu_preempt kthread starved for 10496 jiffies! g51981 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:28240 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0xee1/0x59f0 kernel/sched/core.c:6710
 schedule+0xe7/0x1b0 kernel/sched/core.c:6786
 schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1808
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16050 Comm: syz-executor.3 Not tainted 6.5.0-rc5-syzkaller-00056-gcacc6e22932f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x3f5/0xc70 kernel/locking/qspinlock.c:511
Code: 41 be 00 80 00 00 48 c1 e9 03 41 83 e4 07 41 bd 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 3c 01 eb 0c f3 90 41 83 ee 01 <0f> 84 c2 04 00 00 41 0f b6 07 44 38 e0 7f 08 84 c0 0f 85 fe 05 00
RSP: 0018:ffffc90015a3f1b8 EFLAGS: 00000206
RAX: 0000000000000003 RBX: ffff88807c30b0f0 RCX: 1ffff1100f86161e
RDX: 0000000000000001 RSI: ffffffff8a6c80a0 RDI: ffffffff8ac811a0
RBP: ffff8880b983d240 R08: 0000000000000001 R09: fffffbfff2309be8
R10: ffffffff9184df47 R11: 20657a6953203a6f R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000005c06 R15: ffffed100f86161e
FS:  00007f4933b446c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0687375198 CR3: 000000007912e000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:115
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 dev_graft_qdisc+0x68/0x180 net/sched/sch_generic.c:1118
 taprio_attach+0x20b/0x430 net/sched/sch_taprio.c:2155
 qdisc_graft+0xd84/0x1680 net/sched/sch_api.c:1147
 tc_modify_qdisc+0xcd2/0x1bf0 net/sched/sch_api.c:1731
 rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6428
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2549
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x93c/0xe30 net/netlink/af_netlink.c:1914
 sock_sendmsg_nosec net/socket.c:725 [inline]
 sock_sendmsg+0xd9/0x180 net/socket.c:748
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2494
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2548
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2577
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4932e7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4933b440c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4932f9bf80 RCX: 00007f4932e7cae9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00007f4932ec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4932f9bf80 R15: 00007ffdc0c4cae8
 </TASK>
CPU: 1 PID: 5114 Comm: kworker/1:6 Not tainted 6.5.0-rc5-syzkaller-00056-gcacc6e22932f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events bpf_prog_free_deferred
RIP: 0010:qdisc_peek_head+0x4/0x40 include/net/sch_generic.h:1051
Code: df e8 e0 f9 8c f9 e9 41 f6 ff ff e8 d6 f9 8c f9 e9 c9 ec ff ff 4c 89 f7 e8 e9 f9 8c f9 e9 a3 ef ff ff 0f 1f 40 00 f3 0f 1e fa <53> 48 89 fb e8 c3 ef 38 f9 48 8d bb d8 00 00 00 48 b8 00 00 00 00
RSP: 0018:ffffc900001e0cf8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff88807c30b000 RCX: 0000000000000100
RDX: 1ffffffff1d58523 RSI: ffffffff8859449e RDI: ffff888020d1f000
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888020d1f000
R13: ffffffff8eac28e0 R14: ffff88807c422000 R15: ffff888020d1f018
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200cf000 CR3: 0000000076265000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 taprio_dequeue_from_txq+0x184/0x8d0 net/sched/sch_taprio.c:731
 taprio_dequeue_tc_priority+0x289/0x4b0 net/sched/sch_taprio.c:798
 taprio_dequeue+0x12e/0x5f0 net/sched/sch_taprio.c:868
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x1c4/0x19d0 net/sched/sch_generic.c:415
 qdisc_run include/net/pkt_sched.h:125 [inline]
 qdisc_run include/net/pkt_sched.h:122 [inline]
 net_tx_action+0x71e/0xc80 net/core/dev.c:5049
 __do_softirq+0x218/0x965 kernel/softirq.c:553
 invoke_softirq kernel/softirq.c:427 [inline]
 __irq_exit_rcu kernel/softirq.c:632 [inline]
 irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 9a 7c 31 f7 48 89 df e8 72 fb 31 f7 e8 dd 25 57 f7 fb bf 01 00 00 00 <e8> 22 9e 23 f7 65 8b 05 f3 2b ce 75 85 c0 74 02 5b c3 e8 50 f4 ca
RSP: 0018:ffffc90004c77a28 EFLAGS: 00000206
RAX: 0000000000073017 RBX: ffff8880b993bb80 RCX: 1ffffffff230bc10
RDX: 0000000000000000 RSI: ffffffff8a6c80a0 RDI: 0000000000000001
RBP: ffff8880b993bb80 R08: 0000000000000001 R09: fffffbfff2309bd4
R10: ffffffff9184dea7 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b993bbe0 R14: ffffffff8ca4a020 R15: dffffc0000000000
 wq_worker_sleeping+0x25c/0x2e0 kernel/workqueue.c:1127
 sched_submit_work kernel/sched/core.c:6750 [inline]
 schedule+0x156/0x1b0 kernel/sched/core.c:6783
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
 bpf_prog_pack_free+0x28/0x400 kernel/bpf/core.c:923
 bpf_jit_binary_pack_free+0x3a/0x70 kernel/bpf/core.c:1142
 bpf_jit_free+0x144/0x250 arch/x86/net/bpf_jit_comp.c:2657
 bpf_prog_free_deferred+0x621/0x7f0 kernel/bpf/core.c:2592
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
 worker_thread+0x687/0x1110 kernel/workqueue.c:2751
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>