rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=175037, q=1217)
rcu: All QSes seen, last rcu_preempt kthread activity 10278 (4295104733-4295094455), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10278 jiffies! g175037 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:28936 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 6233 Comm: syz-executor.4 Not tainted 5.16.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:481
print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x1f7c/0x2150 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 ce e7 14 f8 48 89 ef e8 86 5d 15 f8 e8 c1 1a 36 f8 fb bf 01 00 00 00 26 28 08 f8 65 8b 05 1f 7c bb 76 85 c0 74 02 5d c3 e8 3b 51 b9
RSP: 0018:ffffc90000007e08 EFLAGS: 00000202
RAX: 00000000008d2894 RBX: ffffffff87482a50 RCX: 1ffffffff1ff05a6
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff8880b9c28280 R08: 0000000000000001 R09: ffffffff8ff7aa17
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000007e98
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880b9c28280
expire_timers kernel/time/timer.c:1465 [inline]
__run_timers.part.0+0x66c/0xa30 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:strlen+0x54/0x90 lib/string.c:487
Code: 75 48 80 7d 00 00 74 39 48 bb 00 00 00 00 00 fc ff df 48 89 e8 48 83 c0 01 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 0f b6 14 1a <38> ca 7f 04 84 d2 75 1f 80 38 00 75 de 48 83 c4 08 48 29 e8 5b 5d
RSP: 0018:ffffc9000bb1f458 EFLAGS: 00000206
RAX: ffffffff89b8046b RBX: dffffc0000000000 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff8bcc3760 RDI: ffffffff89b80460
RBP: ffffffff89b80460 R08: 0000000000000000 R09: ffffffff8d912357
R10: fffffbfff1b2246a R11: 0000000000000001 R12: ffffffff8bcc3760
R13: ffffffff8ba7e5a0 R14: ffffffff8bcc3760 R15: ffffc9000bb1f528
strlen include/linux/fortify-string.h:102 [inline]
trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline]
perf_trace_lock+0xb1/0x4d0 include/trace/events/lock.h:39
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x4a8/0x720 kernel/locking/lockdep.c:5648
might_alloc include/linux/sched/mm.h:227 [inline]
slab_pre_alloc_hook mm/slab.h:492 [inline]
slab_alloc_node mm/slab.c:3222 [inline]
kmem_cache_alloc_node_trace+0x48/0x5b0 mm/slab.c:3617
__do_kmalloc_node mm/slab.c:3639 [inline]
__kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3654
kmalloc_reserve net/core/skbuff.c:354 [inline]
__alloc_skb+0xde/0x340 net/core/skbuff.c:426
alloc_skb_fclone include/linux/skbuff.h:1177 [inline]
tipc_buf_acquire+0x25/0xe0 net/tipc/msg.c:72
tipc_msg_build+0xf7/0x10b0 net/tipc/msg.c:386
__tipc_sendstream+0x6d0/0x11a0 net/tipc/socket.c:1618
tipc_sendstream net/tipc/socket.c:1549 [inline]
tipc_send_packet+0x67/0xa0 net/tipc/socket.c:1655
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x331/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmmsg+0x195/0x470 net/socket.c:2549
__do_sys_sendmmsg net/socket.c:2578 [inline]
__se_sys_sendmmsg net/socket.c:2575 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2575
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7efdbff34e99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efdbe8aa168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007efdc0047f60 RCX: 00007efdbff34e99
RDX: 00fb93a852dd518c RSI: 0000000020005440 RDI: 0000000000000011
RBP: 00007efdbff8eff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000101d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd209ab6af R14: 00007efdbe8aa300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
5: 55 push %rbp
6: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
b: 48 89 fd mov %rdi,%rbp
e: 48 83 c7 18 add $0x18,%rdi
12: e8 ce e7 14 f8 callq 0xf814e7e5
17: 48 89 ef mov %rbp,%rdi
1a: e8 86 5d 15 f8 callq 0xf8155da5
1f: e8 c1 1a 36 f8 callq 0xf8361ae5
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 26 28 08 f8 callq 0xf8082855 <-- trapping instruction
2f: 65 8b 05 1f 7c bb 76 mov %gs:0x76bb7c1f(%rip),%eax # 0x76bb7c55
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5d pop %rbp
3b: c3 retq
3c: e8 .byte 0xe8
3d: 3b 51 b9 cmp -0x47(%rcx),%edx