rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=7af/1/0x4000000000000000 softirq=133040/133040 fqs=49
(t=10500 jiffies g=230033 q=791)
rcu: rcu_preempt kthread starved for 10383 jiffies! g230033 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:26576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1101 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_irq_enter_irqson+0x0/0x170 kernel/rcu/tree.c:1081
Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 aa b4 90 08 41 f7 c4 00 02 00 00 75 b4 eb b3 e8 7a b4 90 08 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00
RSP: 0018:ffffc90000dbf158 EFLAGS: 00000046
RAX: 0000000000000001 RBX: ffffffff8a200c02 RCX: ffff888080b25700
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffffffff8cb5df68
RBP: 0000000000000000 R08: ffffffff818addc1 R09: fffffbfff1bf9dae
R10: fffffbfff1bf9dae R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS: 00007f526a3ee700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f669dde13a4 CR3: 000000014e722000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_irq_enable_rcuidle+0xbe/0x170 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:smack_ip_output+0xe7/0x180 security/smack/smack_netfilter.c:32
Code: 1f 03 f7 fd 48 8b 1b 48 85 db 74 4e e8 82 74 ab fd 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 fc 02 f7 fd 48 8b 1b <48> 83 c3 28 48 89 d8 48 c1 e8 03 42 8a 04 20 84 c0 75 52 8b 1b 49
RSP: 0018:ffffc90000dbf240 EFLAGS: 00000246
RAX: 1ffff11003b13390 RBX: ffffffff8d0b6a80 RCX: ffff888080b25700
RDX: 0000000000000101 RSI: 0000000000000007 RDI: 000000000000000c
RBP: 0000000000000007 R08: ffffffff83d8cfc3 R09: ffffffff88533ba4
R10: 0000000000000003 R11: ffff888080b25700 R12: dffffc0000000000
R13: 1ffff1100fbcd0c0 R14: ffff88816ad613c0 R15: ffff88803d901d12
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:619
nf_hook+0x305/0x440 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ndisc_send_skb+0x92e/0xf00 net/ipv6/ndisc.c:508
ndisc_send_na+0x798/0x980 net/ipv6/ndisc.c:572
ndisc_recv_ns+0xaf9/0x1250 net/ipv6/ndisc.c:941
ndisc_rcv+0x5cd/0x4f70 net/ipv6/ndisc.c:1768
icmpv6_rcv+0xd88/0x17c0 net/ipv6/icmp.c:961
ip6_protocol_deliver_rcu+0x9a5/0x1310 net/ipv6/ip6_input.c:422
ip6_input_finish net/ipv6/ip6_input.c:463 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472
ip_sabotage_in+0x1a1/0x220 net/bridge/br_netfilter_hooks.c:873
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:619
nf_hook+0x235/0x3a0 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0x87/0xd0 net/ipv6/ip6_input.c:297
__netif_receive_skb_one_core net/core/dev.c:5462 [inline]
__netif_receive_skb+0x1d1/0x500 net/core/dev.c:5576
netif_receive_skb_internal+0x108/0x360 net/core/dev.c:5662
netif_receive_skb+0x19/0x30 net/core/dev.c:5721
br_handle_frame_finish+0x139b/0x1940
br_nf_hook_thresh+0x3db/0x4f0 net/bridge/br_netfilter_hooks.c:1025
br_nf_pre_routing_finish_ipv6+0x942/0xbc0
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:230 [inline]
br_handle_frame+0x875/0x1050 net/bridge/br_input.c:370
__netif_receive_skb_core+0x14d8/0x3e10 net/core/dev.c:5356
__netif_receive_skb_one_core net/core/dev.c:5460 [inline]
__netif_receive_skb+0x120/0x500 net/core/dev.c:5576
process_backlog+0x518/0x9a0 net/core/dev.c:6452
__napi_poll+0xbd/0x520 net/core/dev.c:7017
napi_poll net/core/dev.c:7084 [inline]
net_rx_action+0x61c/0xf30 net/core/dev.c:7171
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:unwind_next_frame+0xa91/0x1fa0
Code: 42 8a 04 30 84 c0 48 8b 5c 24 78 48 8b 6c 24 20 0f 85 dd 11 00 00 c6 03 00 ba 10 00 00 00 48 8b 7c 24 28 31 f6 e8 3f 47 95 00 0a 05 00 00 48 89 5c 24 60 49 8d 7d 08 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffffc900062475a0 EFLAGS: 00000202
RAX: ffffc900062476b0 RBX: ffffc90006247695 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900062476c0
RBP: ffffffff8e739d60 R08: dffffc0000000000 R09: ffffc900062476b0
R10: fffff52000c48ed8 R11: 0000000000000000 R12: 1ffffffff1ce73ac
R13: ffffc90006247660 R14: dffffc0000000000 R15: ffffffff8e739d64
arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:121
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:513
kasan_kmalloc include/linux/kasan.h:269 [inline]
__kmalloc+0x24b/0x370 mm/slub.c:4400
kmalloc_array include/linux/slab.h:631 [inline]
kcalloc include/linux/slab.h:660 [inline]
__list_lru_init+0xaf/0x9e0 mm/list_lru.c:596
alloc_super+0x72b/0x860 fs/super.c:274
sget_fc+0x257/0x660 fs/super.c:531
vfs_get_super fs/super.c:1135 [inline]
get_tree_keyed+0x58/0x180 fs/super.c:1196
vfs_get_tree+0x86/0x270 fs/super.c:1498
fc_mount+0x17/0xa0 fs/namespace.c:994
mq_create_mount ipc/mqueue.c:473 [inline]
mq_init_ns+0x38d/0x4e0 ipc/mqueue.c:1689
create_ipc_ns ipc/namespace.c:58 [inline]
copy_ipcs+0x2ee/0x4d0 ipc/namespace.c:84
create_new_namespaces+0x258/0xa00 kernel/nsproxy.c:90
unshare_nsproxy_namespaces+0x11e/0x180 kernel/nsproxy.c:226
ksys_unshare+0x57d/0xb50 kernel/fork.c:3074
__do_sys_unshare kernel/fork.c:3148 [inline]
__se_sys_unshare kernel/fork.c:3146 [inline]
__x64_sys_unshare+0x34/0x40 kernel/fork.c:3146
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f526cefcae9
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:00007f526a3ee188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f526d010260 RCX: 00007f526cefcae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000008000000
RBP: 00007f526cf56f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe509ce1ef R14: 00007f526a3ee300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 1065 Comm: syz-executor.4 Not tainted 5.15.0-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x1e33/0x2bc0 kernel/rcu/tree.c:2597
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1421
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:mrp_pdu_queue net/802/mrp.c:344 [inline]
RIP: 0010:mrp_join_timer+0x90/0x820 net/802/mrp.c:605
Code: e8 f5 f3 ff ff 48 85 db 74 0a e8 0b c2 57 f9 48 89 dd eb d6 e8 01 c2 57 f9 eb 05 e8 fa c1 57 f9 49 be 00 00 00 00 00 fc ff df <4d> 8d af 48 01 00 00 4c 89 eb 48 c1 eb 03 42 80 3c 33 00 74 08 4c
RSP: 0018:ffffc90000007b58 EFLAGS: 00000246
RAX: ffffffff882c82af RBX: 0000000000000000 RCX: ffff88803e488000
RDX: 0000000000000101 RSI: ffffffff8dba71f0 RDI: 0000000000000003
RBP: ffff8880193cb080 R08: 0000000000000001 R09: ffffffff882c7787
R10: 0000000000000006 R11: ffff88803e488000 R12: ffff8880b2cc3410
R13: ffffc90000007c00 R14: dffffc0000000000 R15: ffff8880b2cc3400
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:tomoyo_domain_quota_is_ok+0xdc/0x5d0 security/tomoyo/util.c:1059
Code: 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 8d 6b 18 48 89 e8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 61 02 00 00 0f b6 6d 00 <31> ff 89 ee e8 8b 91 a7 fd 85 ed 74 17 e8 b2 8e a7 fd e9 00 02 00
RSP: 0018:ffffc900063a79a0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88801dae1280 RCX: 0000000000040000
RDX: ffffc9001229f000 RSI: 00000000000017de RDI: 00000000000017df
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff83dcb63b
R10: 0000000000000007 R11: ffff88803e488000 R12: ffff888070322110
R13: 00000000000001cd R14: dffffc0000000000 R15: ffffc900063a7cc0
tomoyo_supervisor+0x37e/0x1300 security/tomoyo/common.c:2089
tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
tomoyo_path_number_perm+0x563/0x7c0 security/tomoyo/file.c:734
security_file_ioctl+0x55/0xb0 security/security.c:1541
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x48/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f526cefcae9
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:00007f526a472188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f526d00ff60 RCX: 00007f526cefcae9
RDX: 0000000020000740 RSI: 00000000d0009412 RDI: 0000000000000003
RBP: 00007f526cf56f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe509ce1ef R14: 00007f526a472300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 5b pop %rbx
1: 41 5c pop %r12
3: 41 5d pop %r13
5: 41 5e pop %r14
7: 41 5f pop %r15
9: 5d pop %rbp
a: c3 retq
b: e8 aa b4 90 08 callq 0x890b4ba
10: 41 f7 c4 00 02 00 00 test $0x200,%r12d
17: 75 b4 jne 0xffffffcd
19: eb b3 jmp 0xffffffce
1b: e8 7a b4 90 08 callq 0x890b49a
20: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
27: 00 00 00
* 2a: 55 push %rbp <-- trapping instruction
2b: 48 89 e5 mov %rsp,%rbp
2e: 41 57 push %r15
30: 41 56 push %r14
32: 41 55 push %r13
34: 41 54 push %r12
36: 53 push %rbx
37: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp
3b: 48 rex.W
3c: 81 .byte 0x81
3d: ec in (%dx),%al
3e: 80 .byte 0x80