rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=ce3c/1/0x4000000000000000 softirq=95686/95687 fqs=85
rcu: (detected by 1, t=10502 jiffies, g=115341, q=1441 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15590 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-10323-g8f6a15f095a6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:taprio_set_budgets+0x337/0x370 net/sched/sch_taprio.c:674
Code: fe e8 8d 9b 04 f8 48 c7 c7 60 4c 64 8f 4c 89 fe e8 de 4e 58 fb e9 5b fe ff ff e8 74 9b 04 f8 eb 05 e8 6d 9b 04 f8 48 83 c4 28 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 89 d9 80 e1 07 fe c1
RSP: 0018:ffffc90000007c58 EFLAGS: 00000082
RAX: ffffffff8991967c RBX: ffff88802d9a0c00 RCX: ffff888023071e00
RDX: 0000000000010203 RSI: 0000000000000004 RDI: ffff88802d9a0c84
RBP: 0000000000000000 R08: ffff88802d9a0c87 R09: 1ffff11005b34190
R10: dffffc0000000000 R11: ffffed1005b34191 R12: 0000000000000004
R13: ffff88802d9a0c08 R14: ffff88802d9a0c84 R15: 0000000000000001
FS: 00007fc4ad7476c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da28000 CR3: 00000000677d6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
advance_sched+0x98d/0xca0 net/sched/sch_taprio.c:977
__run_hrtimer kernel/time/hrtimer.c:1687 [inline]
__hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 8e 95 68 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 93 2f d2 f5 65 8b 05 c4 60 70 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000912eb40 EFLAGS: 00000206
RAX: 1a8994d6c38b9c00 RBX: 1ffff92001225d6c RCX: ffffffff8172e86a
RDX: dffffc0000000000 RSI: ffffffff8bcab880 RDI: 0000000000000001
RBP: ffffc9000912ebd0 R08: ffffffff92fb172f R09: 1ffffffff25f62e5
R10: dffffc0000000000 R11: fffffbfff25f62e6 R12: dffffc0000000000
R13: 1ffff92001225d68 R14: ffffc9000912eb60 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
taprio_change+0x339b/0x42d0 net/sched/sch_taprio.c:1971
taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2112
qdisc_create+0x9d4/0x11a0 net/sched/sch_api.c:1355
tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1777
rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6595
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2564
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8e1/0xcb0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2585
___sys_sendmsg net/socket.c:2639 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2668
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc4aca7cee9
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:00007fc4ad7470c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc4acbabf80 RCX: 00007fc4aca7cee9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000006
RBP: 00007fc4acac949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc4acbabf80 R15: 00007fc4acccfa98
rcu: rcu_preempt kthread starved for 10328 jiffies! g115341 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R running task stack:24880 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 15606 Comm: syz-executor.2 Not tainted 6.9.0-syzkaller-10323-g8f6a15f095a6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:207
Code: 5b e9 33 5d 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d5 03 00 <65> 8b 15 00 a3 6d 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74
RSP: 0018:ffffc900090dfad8 EFLAGS: 00000202
RAX: ffffffff818a2acc RBX: 1ffff11017288c11 RCX: ffff888048c39e00
RDX: ffffc9000e13f000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900090dfce0 R08: ffffffff818a2a9b R09: 1ffffffff25f62d1
R10: dffffc0000000000 R11: fffffbfff25f62d2 R12: dffffc0000000000
R13: ffff8880b9446088 R14: ffff8880b953f900 R15: 0000000000000000
FS: 00007f094c83f6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da2c000 CR3: 000000002f44c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
csd_lock_wait kernel/smp.c:311 [inline]
smp_call_function_many_cond+0x18ac/0x2a00 kernel/smp.c:855
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
hardware_enable_all arch/x86/kvm/../../../virt/kvm/kvm_main.c:5615 [inline]
kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1219 [inline]
kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:5420 [inline]
kvm_dev_ioctl+0x1164/0x2320 arch/x86/kvm/../../../virt/kvm/kvm_main.c:5462
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f094ba7cee9
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:00007f094c83f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f094bbabf80 RCX: 00007f094ba7cee9
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 000000000000000a
RBP: 00007f094bac949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f094bbabf80 R15: 00007f094bccfa98