rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10500 ticks this GP) idle=457/1/0x4000000000000000 softirq=130217/130217 fqs=496
(t=10502 jiffies g=203041 q=62 ncpus=2)
rcu: rcu_preempt kthread starved for 9509 jiffies! g203041 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:28312 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1999
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2187
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1c9/0x240 drivers/acpi/processor_idle.c:554
NMI backtrace for cpu 0
CPU: 0 PID: 2001 Comm: syz-executor.3 Not tainted 5.19.0-rc8-syzkaller-00146-ge65c6a46df94 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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+0x262/0x3f0 kernel/rcu/tree_stall.h:371
print_cpu_stall kernel/rcu/tree_stall.h:667 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:751 [inline]
rcu_pending kernel/rcu/tree.c:3977 [inline]
rcu_sched_clock_irq.cold+0x144/0x8fc kernel/rcu/tree.c:2675
update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480
__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:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__sanitizer_cov_trace_pc+0x4c/0x60 kernel/kcov.c:205
Code: 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 83 f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 01 48 89 34 c1 c3 0f 1f 00 41 55
RSP: 0018:ffffc9000365f238 EFLAGS: 00000246
RAX: 000000000003ffff RBX: 0000000000000008 RCX: ffffc900057ca000
RDX: 0000000000040000 RSI: ffffffff87858a93 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000001fff
R10: 0000000000000007 R11: 0000000000000001 R12: ffff8880372a02c0
R13: 0000000000000007 R14: 0000000000000000 R15: dffffc0000000000
cake_heapify+0x163/0x3d0 net/sched/sch_cake.c:1426
cake_drop net/sched/sch_cake.c:1515 [inline]
cake_enqueue+0x13a7/0x39f0 net/sched/sch_cake.c:1903
dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3785
__dev_xmit_skb net/core/dev.c:3874 [inline]
__dev_queue_xmit+0x2093/0x3900 net/core/dev.c:4221
dev_queue_xmit include/linux/netdevice.h:2994 [inline]
__bpf_tx_skb net/core/filter.c:2114 [inline]
__bpf_redirect_no_mac net/core/filter.c:2139 [inline]
__bpf_redirect+0x5fe/0xe40 net/core/filter.c:2162
____bpf_clone_redirect net/core/filter.c:2429 [inline]
bpf_clone_redirect+0x2ae/0x420 net/core/filter.c:2401
___bpf_prog_run+0x369d/0x7960 kernel/bpf/core.c:1852
__bpf_prog_run512+0x91/0xd0 kernel/bpf/core.c:2077
bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x381/0x9c0 net/bpf/test_run.c:402
bpf_prog_test_run_skb+0xb5e/0x1e10 net/bpf/test_run.c:1155
bpf_prog_test_run kernel/bpf/syscall.c:3591 [inline]
__sys_bpf+0x15c1/0x5700 kernel/bpf/syscall.c:4935
__do_sys_bpf kernel/bpf/syscall.c:5021 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5019 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5019
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+0x63/0xcd
RIP: 0033:0x7f2b0a289209
================================
WARNING: inconsistent lock state
5.19.0-rc8-syzkaller-00146-ge65c6a46df94 #0 Not tainted
--------------------------------
inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
syz-executor.3/2001 [HC1[1]:SC0[2]:HE0:SE0] takes:
ffffffff8beb3e78 (vmap_area_lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
ffffffff8beb3e78 (vmap_area_lock){?.+.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805
{HARDIRQ-ON-W} state was registered at:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
alloc_vmap_area+0xa49/0x1f00 mm/vmalloc.c:1586
__get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2453
__vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3125
__vmalloc_node mm/vmalloc.c:3230 [inline]
__vmalloc+0x69/0x80 mm/vmalloc.c:3244
pcpu_mem_zalloc mm/percpu.c:516 [inline]
pcpu_mem_zalloc+0x51/0xa0 mm/percpu.c:508
pcpu_alloc_chunk mm/percpu.c:1454 [inline]
pcpu_create_chunk+0xd7/0x930 mm/percpu-vm.c:338
pcpu_alloc+0x1012/0x13d0 mm/percpu.c:1834
alloc_kmem_cache_cpus.constprop.0+0x29/0xc0 mm/slab.c:1729
do_tune_cpucache+0x37/0x230 mm/slab.c:3844
enable_cpucache+0x3c/0xa0 mm/slab.c:3938
kmem_cache_init_late+0x33/0x66 mm/slab.c:1276
start_kernel+0x2f5/0x48f init/main.c:1058
secondary_startup_64_no_verify+0xce/0xdb
irq event stamp: 1862469
hardirqs last enabled at (1862468): [] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
hardirqs last enabled at (1862468): [] timekeeping_get_delta kernel/time/timekeeping.c:253 [inline]
hardirqs last enabled at (1862468): [] timekeeping_get_ns kernel/time/timekeeping.c:387 [inline]
hardirqs last enabled at (1862468): [] ktime_get+0x38a/0x470 kernel/time/timekeeping.c:847
hardirqs last disabled at (1862469): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106
softirqs last enabled at (414): [] spin_unlock_bh include/linux/spinlock.h:394 [inline]
softirqs last enabled at (414): [] bpf_prog_alloc_id kernel/bpf/syscall.c:1961 [inline]
softirqs last enabled at (414): [] bpf_prog_load+0x10bf/0x2250 kernel/bpf/syscall.c:2583
softirqs last disabled at (482): [] __dev_queue_xmit+0x1e3/0x3900 net/core/dev.c:4172
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(vmap_area_lock);
lock(vmap_area_lock);
*** DEADLOCK ***
4 locks held by syz-executor.3/2001:
#0: ffffffff8bd846e0 (rcu_read_lock){....}-{1:2}, at: bpf_test_timer_enter+0x0/0x160 net/bpf/test_run.c:755
#1: ffffffff8bd84680 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x1e3/0x3900 net/core/dev.c:4172
#2: ffff8880372a0108 (&sch->q.lock){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
#2: ffff8880372a0108 (&sch->q.lock){+.-.}-{2:2}, at: __dev_xmit_skb net/core/dev.c:3849 [inline]
#2: ffff8880372a0108 (&sch->q.lock){+.-.}-{2:2}, at: __dev_queue_xmit+0x1f88/0x3900 net/core/dev.c:4221
#3: ffffffff8bd8e698 (rcu_node_0){-.-.}-{2:2}, at: rcu_dump_cpu_stacks+0xd4/0x3f0 kernel/rcu/tree_stall.h:366
stack backtrace:
CPU: 0 PID: 2001 Comm: syz-executor.3 Not tainted 5.19.0-rc8-syzkaller-00146-ge65c6a46df94 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_usage_bug kernel/locking/lockdep.c:3961 [inline]
valid_state kernel/locking/lockdep.c:3973 [inline]
mark_lock_irq kernel/locking/lockdep.c:4176 [inline]
mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632
mark_lock kernel/locking/lockdep.c:4596 [inline]
mark_usage kernel/locking/lockdep.c:4524 [inline]
__lock_acquire+0x14ad/0x5660 kernel/locking/lockdep.c:5007
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805
check_heap_object mm/usercopy.c:176 [inline]
__check_object_size mm/usercopy.c:250 [inline]
__check_object_size+0x1f8/0x700 mm/usercopy.c:212
check_object_size include/linux/thread_info.h:199 [inline]
__copy_from_user_inatomic include/linux/uaccess.h:62 [inline]
copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline]
copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31
copy_code arch/x86/kernel/dumpstack.c:91 [inline]
show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121
show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149
__show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74
show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292
__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+0x262/0x3f0 kernel/rcu/tree_stall.h:371
print_cpu_stall kernel/rcu/tree_stall.h:667 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:751 [inline]
rcu_pending kernel/rcu/tree.c:3977 [inline]
rcu_sched_clock_irq.cold+0x144/0x8fc kernel/rcu/tree.c:2675
update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480
__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:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__sanitizer_cov_trace_pc+0x4c/0x60 kernel/kcov.c:205
Code: 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 83 f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 01 48 89 34 c1 c3 0f 1f 00 41 55
RSP: 0018:ffffc9000365f238 EFLAGS: 00000246
RAX: 000000000003ffff RBX: 0000000000000008 RCX: ffffc900057ca000
RDX: 0000000000040000 RSI: ffffffff87858a93 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000001fff
R10: 0000000000000007 R11: 0000000000000001 R12: ffff8880372a02c0
R13: 0000000000000007 R14: 0000000000000000 R15: dffffc0000000000
cake_heapify+0x163/0x3d0 net/sched/sch_cake.c:1426
cake_drop net/sched/sch_cake.c:1515 [inline]
cake_enqueue+0x13a7/0x39f0 net/sched/sch_cake.c:1903
dev_qdisc_enqueue+0x40/0x300 net/core/dev.c:3785
__dev_xmit_skb net/core/dev.c:3874 [inline]
__dev_queue_xmit+0x2093/0x3900 net/core/dev.c:4221
dev_queue_xmit include/linux/netdevice.h:2994 [inline]
__bpf_tx_skb net/core/filter.c:2114 [inline]
__bpf_redirect_no_mac net/core/filter.c:2139 [inline]
__bpf_redirect+0x5fe/0xe40 net/core/filter.c:2162
____bpf_clone_redirect net/core/filter.c:2429 [inline]
bpf_clone_redirect+0x2ae/0x420 net/core/filter.c:2401
___bpf_prog_run+0x369d/0x7960 kernel/bpf/core.c:1852
__bpf_prog_run512+0x91/0xd0 kernel/bpf/core.c:2077
bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x381/0x9c0 net/bpf/test_run.c:402
bpf_prog_test_run_skb+0xb5e/0x1e10 net/bpf/test_run.c:1155
bpf_prog_test_run kernel/bpf/syscall.c:3591 [inline]
__sys_bpf+0x15c1/0x5700 kernel/bpf/syscall.c:4935
__do_sys_bpf kernel/bpf/syscall.c:5021 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5019 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5019
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+0x63/0xcd
RIP: 0033:0x7f2b0a289209
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2b0b31c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2b0a39bf60 RCX: 00007f2b0a289209
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 000000000000000a
RBP: 00007f2b0a2e3161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeef857a4f R14: 00007f2b0b31c300 R15: 0000000000022000
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2b0b31c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2b0a39bf60 RCX: 00007f2b0a289209
RDX: 0000000000000048 RSI: 0000000020000140 RDI: 000000000000000a
RBP: 00007f2b0a2e3161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeef857a4f R14: 00007f2b0b31c300 R15: 0000000000022000