rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 ticks this GP) idle=47c4/1/0x4000000000000000 softirq=9300/9300 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5080/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=11173, q=457 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6306 Comm: syz-executor.1 Not tainted 6.8.0-rc4-syzkaller-01074-g2f3bfa8e30b5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4796 [inline]
RIP: 0010:__lock_acquire+0x96a/0x1fd0 kernel/locking/lockdep.c:5087
Code: 81 c3 c6 00 00 00 48 89 d8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 a5 00 00 00 80 3b 02 74 30 49 ff c6 48 8b 44 24 40 0f b6 04 10 <84> c0 75 6a 48 8b 04 24 48 63 00 49 83 c7 28 49 83 c5 28 41 ff c4
RSP: 0018:ffffc900001f0910 EFLAGS: 00000003
RAX: 0000000000000000 RBX: ffffffff92983526 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff92c98428
RBP: 0000000000000002 R08: ffffffff92c9842f R09: 1ffffffff2593085
R10: dffffc0000000000 R11: fffffbfff2593086 R12: 0000000000000001
R13: ffff888056350b08 R14: 0000000000000002 R15: ffff888056350b08
FS: 00007fe9d87516c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000600 CR3: 000000001f64c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
debug_activate kernel/time/hrtimer.c:477 [inline]
enqueue_hrtimer+0x30/0x3a0 kernel/time/hrtimer.c:1087
__run_hrtimer kernel/time/hrtimer.c:1706 [inline]
__hrtimer_run_queues+0x6b4/0xd00 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:qdisc_change net/sched/sch_api.c:1431 [inline]
RIP: 0010:tc_modify_qdisc+0x1c07/0x1e40 net/sched/sch_api.c:1746
Code: 00 74 05 e8 eb 3d 96 f8 48 8b 44 24 08 48 8b 70 50 48 8d 50 48 48 89 df 31 c9 41 b8 01 00 00 00 4d 89 f1 e8 5b 21 dd ff eb 0c 04 c6 33 f8 eb 05 e8 fd c5 33 f8 48 8b 44 24 40 42 0f b6 04 38
RSP: 0018:ffffc9000363f120 EFLAGS: 00000246
RAX: 1ffff920006c7e41 RBX: ffffc9000363f208 RCX: ffff888056350000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000363f310 R08: ffffffff89457bb6 R09: 1ffffffff2593085
R10: dffffc0000000000 R11: fffffbfff2593086 R12: ffffc9000363f760
R13: 1ffff1100f649c04 R14: 0000000000000000 R15: dffffc0000000000
rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6597
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
___sys_sendmsg net/socket.c:2638 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fe9d7a7dda9
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:00007fe9d87510c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe9d7babf80 RCX: 00007fe9d7a7dda9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 00007fe9d7aca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe9d7babf80 R15: 00007ffded96bd58
task:syz-executor.4 state:R running task stack:19544 pid:5080 tgid:5080 ppid:5072 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6904
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6928
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
unwind_next_frame+0x2122/0x29e0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x150/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1d0 kernel/stacktrace.c:122
save_stack+0xfa/0x1f0 mm/page_owner.c:129
__reset_page_owner+0x44/0x2d0 mm/page_owner.c:150
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x968/0xa90 mm/page_alloc.c:2346
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
vfree+0x186/0x2e0 mm/vmalloc.c:2842
copy_entries_to_user net/ipv4/netfilter/arp_tables.c:713 [inline]
get_entries net/ipv4/netfilter/arp_tables.c:867 [inline]
do_arpt_get_ctl+0x10b4/0x16a0 net/ipv4/netfilter/arp_tables.c:1453
nf_getsockopt+0x299/0x2c0 net/netfilter/nf_sockopt.c:116
ip_getsockopt+0x222/0x2e0 net/ipv4/ip_sockglue.c:1770
tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4372
do_sock_getsockopt+0x373/0x850 net/socket.c:2373
__sys_getsockopt+0x270/0x330 net/socket.c:2402
__do_sys_getsockopt net/socket.c:2412 [inline]
__se_sys_getsockopt net/socket.c:2409 [inline]
__x64_sys_getsockopt+0xb5/0xd0 net/socket.c:2409
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7ff28be7f94a
RSP: 002b:00007ffc42837448 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff28be7f94a
RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffc428374b0 R08: 00007ffc4283745c R09: 00007ffc42837847
R10: 00007ffc428374b0 R11: 0000000000000212 R12: 00007ffc4283745c
R13: 000000000001a0be R14: 000000000001a091 R15: 0000000000000007
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g11173 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=3716
rcu: rcu_preempt kthread starved for 10502 jiffies! g11173 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:24656 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2183
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:1663
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242