rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10500 ticks this GP) idle=ad7/1/0x4000000000000000 softirq=37546/37546 fqs=7
(t=10502 jiffies g=52261 q=543)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10488 jiffies! g52261 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=27159
rcu: rcu_preempt kthread starved for 10491 jiffies! g52261 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:28664 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x260 kernel/sched/core.c:6377
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1963
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2136
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
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: 15067 Comm: syz-executor.5 Not tainted 5.17.0-rc5-syzkaller-01595-gf2b77012ddd5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1001
Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 63 0f b6 07 40 38 c6 74 35 48 83 c4 10 c3 c3 e8 03 06 4b 00 eb 07 0f 00 2d 9a 4a 75 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 a6 07 4b 00 8b 74 24 0c
RSP: 0018:ffffc9000a7c7800 EFLAGS: 00000202
RAX: 000000000000b68a RBX: 0000000000000000 RCX: 1ffffffff1fc77a6
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: ffff88801b6b1898 R08: 0000000000000001 R09: ffffffff8fdf49ff
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffed10036d6313 R14: 0000000000000001 R15: ffff8880b9c3aa80
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 0000000052a11000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:115
spin_lock_bh include/linux/spinlock.h:354 [inline]
lock_sock_nested+0x5b/0xf0 net/core/sock.c:3315
lock_sock include/net/sock.h:1682 [inline]
sock_map_close+0x71/0x780 net/core/sock_map.c:1571
inet_release+0x12e/0x280 net/ipv4/af_inet.c:428
__sock_release+0xcd/0x280 net/socket.c:650
sock_close+0x18/0x20 net/socket.c:1318
__fput+0x286/0x9f0 fs/file_table.c:317
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xb29/0x2a30 kernel/exit.c:806
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x45a/0x2490 kernel/signal.c:2863
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fe27f2ba049
Code: Unable to access opcode bytes at RIP 0x7fe27f2ba01f.
RSP: 002b:00007ffd4a1bae88 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fe27f3ccf6c RCX: 00007fe27f2ba049
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe27f3ccf68
RBP: 00007fe27f3ccf60 R08: 00007fe27f3d4698 R09: 0000000000000000
R10: 0000001b2e160000 R11: 0000000000000246 R12: 00007fe27f3ccf6c
R13: 00007fe27f3d4720 R14: 00007fe27f3ccf60 R15: 0000000000000000
NMI backtrace for cpu 1
CPU: 1 PID: 20 Comm: ksoftirqd/1 Not tainted 5.17.0-rc5-syzkaller-01595-gf2b77012ddd5 #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+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:604 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq.cold+0x402/0x755 kernel/rcu/tree.c:2617
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+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__orc_find+0x5e/0xf0 arch/x86/kernel/unwind_orc.c:50
Code: 89 fe 48 89 fd eb 0c 48 8d 6b 04 49 89 de 49 39 ec 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 <48> 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0
RSP: 0018:ffffc900001a6fe8 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 1ffff92000034e0e RCX: ffffffff87b0ec62
RDX: 000000000000000c RSI: ffffffff8e8e6fce RDI: ffffffff8df58790
RBP: ffffffff8df58790 R08: ffffffff8e8e6fce R09: 0000000000000001
R10: fffff52000034e2c R11: 0000000000088078 R12: ffffffff8df587c0
R13: ffffffff8df58790 R14: ffffffff8df58790 R15: dffffc0000000000
orc_find arch/x86/kernel/unwind_orc.c:173 [inline]
unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:45
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free+0x126/0x160 mm/kasan/common.c:328
kasan_slab_free include/linux/kasan.h:236 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1754
slab_free mm/slub.c:3509 [inline]
kmem_cache_free+0xd7/0x370 mm/slub.c:3526
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:700
kfree_skb_reason+0x85/0x110 include/linux/refcount.h:279
kfree_skb include/linux/skbuff.h:1189 [inline]
sock_drop include/linux/skmsg.h:304 [inline]
sk_psock_verdict_apply+0x1e8/0x540 net/core/skmsg.c:1009
sk_psock_verdict_recv+0x2b0/0x780 net/core/skmsg.c:1183
tcp_read_sock+0x1f8/0x580 net/ipv4/tcp.c:1681
sk_psock_verdict_data_ready+0x11a/0x180 net/core/skmsg.c:1202
tcp_urg net/ipv4/tcp_input.c:5641 [inline]
tcp_urg+0x6c4/0xb40 net/ipv4/tcp_input.c:5621
tcp_rcv_established+0x81b/0x2020 net/ipv4/tcp_input.c:5965
tcp_v4_do_rcv+0x669/0x980 net/ipv4/tcp_ipv4.c:1660
tcp_v4_rcv+0x299e/0x3240 net/ipv4/tcp_ipv4.c:2072
ip_protocol_deliver_rcu+0xa3/0xf50 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:232
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:253
dst_input include/net/dst.h:461 [inline]
ip_rcv_finish+0x1cb/0x2f0 net/ipv4/ip_input.c:436
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:555
__netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5358
__netif_receive_skb+0x24/0x1b0 net/core/dev.c:5472
process_backlog+0x2a5/0x680 net/core/dev.c:5800
__napi_poll+0xaf/0x440 net/core/dev.c:6366
napi_poll net/core/dev.c:6433 [inline]
net_rx_action+0x801/0xb40 net/core/dev.c:6520
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
run_ksoftirqd kernel/softirq.c:921 [inline]
run_ksoftirqd+0x2d/0x60 kernel/softirq.c:913
smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: fa cli
1: 83 e2 07 and $0x7,%edx
4: 38 d0 cmp %dl,%al
6: 7f 04 jg 0xc
8: 84 c0 test %al,%al
a: 75 63 jne 0x6f
c: 0f b6 07 movzbl (%rdi),%eax
f: 40 38 c6 cmp %al,%sil
12: 74 35 je 0x49
14: 48 83 c4 10 add $0x10,%rsp
18: c3 retq
19: c3 retq
1a: e8 03 06 4b 00 callq 0x4b0622
1f: eb 07 jmp 0x28
21: 0f 00 2d 9a 4a 75 08 verw 0x8754a9a(%rip) # 0x8754ac2
28: fb sti
29: f4 hlt
* 2a: 48 83 c4 10 add $0x10,%rsp <-- trapping instruction
2e: c3 retq
2f: 89 74 24 0c mov %esi,0xc(%rsp)
33: 48 89 3c 24 mov %rdi,(%rsp)
37: e8 a6 07 4b 00 callq 0x4b07e2
3c: 8b 74 24 0c mov 0xc(%rsp),%esi