rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=22c4/1/0x4000000000000000 softirq=23339/23339 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4075/1:b..l P8230/1:b..l
(detected by 1, t=10506 jiffies, g=36581, q=52 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8225 Comm: syz-executor.3 Not tainted 6.0.0-rc1-syzkaller-00066-g3b06a2755758 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:hlock_class kernel/locking/lockdep.c:231 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:220 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4752 [inline]
RIP: 0010:__lock_acquire+0x63b/0x56d0 kernel/locking/lockdep.c:5003
Code: 48 c7 c0 e8 23 de 8d 4c 89 64 24 50 45 89 f4 49 bf 00 00 00 00 00 fc ff df 48 c1 e8 03 4c 8b 74 24 28 4c 01 f8 48 89 44 24 58 <eb> 66 48 8d 04 5b 48 c1 e0 06 48 05 60 ad 8d 90 48 8d b8 b8 00 00
RSP: 0018:ffffc90000007ab8 EFLAGS: 00000086
RAX: fffffbfff1bbc47d RBX: ffff88802f252b08 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffffffff908dae19
RBP: 0000000000000002 R08: 0000000000000000 R09: dffffc0000000000
R10: fffffbfff211b528 R11: 0000000000000000 R12: 0000000000000003
R13: ffff88802f252040 R14: ffff88802f252ab8 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f119cc76718 CR3: 000000007ca9f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
lock_acquire kernel/locking/lockdep.c:5666 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:658
debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
debug_activate kernel/time/hrtimer.c:475 [inline]
enqueue_hrtimer+0x27/0x3e0 kernel/time/hrtimer.c:1084
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0xaf3/0xe40 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
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:crc32c_intel_le_hw arch/x86/crypto/crc32c-intel_glue.c:68 [inline]
RIP: 0010:crc32c_pcl_intel_update+0xee/0x320 arch/x86/crypto/crc32c-intel_glue.c:165
Code: 00 0f 85 01 02 00 00 31 ff 44 89 e6 48 83 c5 08 f2 48 0f 38 f1 5d f8 e8 f0 86 36 00 45 8d 74 24 ff 45 85 e4 75 c7 8b 44 24 10 <83> c0 01 4d 8d 6c c5 00 e8 15 8a 36 00 44 8b 7c 24 14 31 ff 44 89
RSP: 0018:ffffc90003ef7948 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 00000000026b330d RCX: ffffffff8144afd0
RDX: ffff88802f252040 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffff88814b165018 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88807ffe13f0 R12: 0000000000000000
R13: ffff88814b165000 R14: 00000000ffffffff R15: dffffc0000000000
crypto_shash_update+0xc4/0x120 crypto/shash.c:131
ext4_chksum fs/ext4/ext4.h:2465 [inline]
ext4_group_desc_csum+0x2fe/0x820 fs/ext4/super.c:3197
ext4_group_desc_csum_set+0xc3/0x190 fs/ext4/super.c:3243
ext4_free_inode+0x95e/0x13f0 fs/ext4/ialloc.c:332
ext4_evict_inode+0xfbc/0x1d40 fs/ext4/inode.c:331
evict+0x2ed/0x6b0 fs/inode.c:665
iput_final fs/inode.c:1748 [inline]
iput.part.0+0x55d/0x810 fs/inode.c:1774
iput+0x58/0x70 fs/inode.c:1764
dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:401
__dentry_kill+0x3c0/0x640 fs/dcache.c:607
dentry_kill fs/dcache.c:745 [inline]
dput+0x64d/0xdb0 fs/dcache.c:913
path_put+0x2d/0x60 fs/namei.c:558
free_fs_struct fs/fs_struct.c:91 [inline]
exit_fs+0xf9/0x170 fs/fs_struct.c:108
do_exit+0xaa6/0x29b0 kernel/exit.c:791
__do_sys_exit kernel/exit.c:892 [inline]
__se_sys_exit kernel/exit.c:890 [inline]
__x64_sys_exit+0x3e/0x50 kernel/exit.c:890
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: 0033:0x7fbfa4689279
Code: Unable to access opcode bytes at RIP 0x7fbfa468924f.
RSP: 002b:00007fbfa35fe118 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007fbfa479bf80 RCX: 00007fbfa4689279
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fbfa46e3189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcd6cb0c6f R14: 00007fbfa35fe300 R15: 0000000000022000
</TASK>
task:syz-executor.0 state:R running task stack:28688 pid: 8230 ppid: 3641 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6494
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6806
irqentry_exit+0x31/0x80 kernel/entry/common.c:428
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: ce a3 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0000:ffffc900032a7be0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000654f7e RCX: 29dbb717f440da5e
RDX: 1ffff11005a5816e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff908da947
R10: fffffbfff211b528 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf867c0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:280 [inline]
rcu_read_lock include/linux/rcupdate.h:706 [inline]
percpu_ref_put_many.constprop.0+0x2c/0x1a0 include/linux/percpu-refcount.h:330
percpu_ref_put include/linux/percpu-refcount.h:351 [inline]
css_put include/linux/cgroup.h:404 [inline]
__mem_cgroup_charge+0x6d/0x90 mm/memcontrol.c:6810
mem_cgroup_charge include/linux/memcontrol.h:689 [inline]
do_anonymous_page mm/memory.c:4088 [inline]
handle_pte_fault mm/memory.c:4909 [inline]
__handle_mm_fault+0x17df/0x39b0 mm/memory.c:5053
handle_mm_fault+0x1c8/0x780 mm/memory.c:5151
do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1397
handle_page_fault arch/x86/mm/fault.c:1488 [inline]
exc_page_fault+0x94/0x170 arch/x86/mm/fault.c:1544
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f119ba3980f
RSP: 002b:00007ffed1492550 EFLAGS: 00010246
RAX: 00007f119cc56000 RBX: 0000000000021000 RCX: 00007f119ba89387
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f119cc57000
RBP: 00007ffed1492620 R08: 00000000ffffffff R09: 00007f119cc76700
R10: 0000000000020022 R11: 0000000000000206 R12: 00007ffed1492740
R13: 00007f119cc76700 R14: 0000000000000000 R15: 0000000000022000
</TASK>
task:kworker/u4:5 state:R running task stack:25936 pid: 4075 ppid: 2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6494
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6806
irqentry_exit+0x31/0x80 kernel/entry/common.c:428
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: ce a3 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900040efaa0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200081df56 RCX: 24818582123658be
RDX: 1ffff1100622f576 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff908da947
R10: fffffbfff211b528 R11: 000000000008c07c R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf867c0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:280 [inline]
rcu_read_lock include/linux/rcupdate.h:706 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:755 [inline]
batadv_iv_ogm_schedule_buff+0x5d2/0x1430 net/batman-adv/bat_iv_ogm.c:826
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x740/0x910 net/batman-adv/bat_iv_ogm.c:1713
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
rcu: rcu_preempt kthread starved for 10506 jiffies! g36581 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:28928 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6494
schedule+0xda/0x1b0 kernel/sched/core.c:6570
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1657
rcu_gp_kthread+0x236/0x360 kernel/rcu/tree.c:1854
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
</TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 8232 Comm: syz-executor.3 Not tainted 6.0.0-rc1-syzkaller-00066-g3b06a2755758 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514
print_other_cpu_stall kernel/rcu/tree_stall.h:619 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:762 [inline]
rcu_pending kernel/rcu/tree.c:3660 [inline]
rcu_sched_clock_irq+0x2404/0x2530 kernel/rcu/tree.c:2342
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+0x1c0/0xe40 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
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1070
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 83 2c 4c 00 66 90 0f 00 2d 7a 44 b4 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 56 2b 4c 00 8b 74 24 0c
RSP: 0018:ffffc90003fb7958 EFLAGS: 00000246
RAX: 000000000000aa11 RBX: 0000000000000000 RCX: 1ffffffff21229f6
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88814b164000 R08: 0000000000000001 R09: ffffffff908da9df
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffed102962c800 R14: 0000000000000001 R15: ffff8880b9b3ae40
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+0x8c7/0xb50 kernel/locking/qspinlock.c:511
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:114 [inline]
do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:349 [inline]
ext4_lock_group fs/ext4/ext4.h:3491 [inline]
__ext4_new_inode+0x2af2/0x5690 fs/ext4/ialloc.c:1096
ext4_symlink+0x5a8/0xa00 fs/ext4/namei.c:3356
vfs_symlink fs/namei.c:4378 [inline]
vfs_symlink+0x365/0x5b0 fs/namei.c:4363
do_symlinkat+0x261/0x2e0 fs/namei.c:4407
__do_sys_symlinkat fs/namei.c:4424 [inline]
__se_sys_symlinkat fs/namei.c:4421 [inline]
__x64_sys_symlinkat+0x93/0xc0 fs/namei.c:4421
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: 0033:0x7fbfa4688b87
================================
WARNING: inconsistent lock state
6.0.0-rc1-syzkaller-00066-g3b06a2755758 #0 Not tainted
--------------------------------
inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
syz-executor.3/8232 [HC1[1]:SC0[0]:HE0:SE1] takes:
ffffffff8c0b9258 (vmap_area_lock){?.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
ffffffff8c0b9258 (vmap_area_lock){?.+.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1836
{HARDIRQ-ON-W} state was registered at:
lock_acquire kernel/locking/lockdep.c:5666 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
__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+0xa0b/0x1d50 mm/vmalloc.c:1617
__get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2484
__vmalloc_node_range+0x250/0x13a0 mm/vmalloc.c:3156
__vmalloc_node mm/vmalloc.c:3261 [inline]
__vmalloc+0x69/0x80 mm/vmalloc.c:3275
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+0x1118/0x14f0 mm/percpu.c:1834
alloc_kmem_cache_cpus.constprop.0+0x29/0x120 mm/slab.c:1729
do_tune_cpucache+0x37/0x2a0 mm/slab.c:3834
enable_cpucache+0x3c/0xa0 mm/slab.c:3928
kmem_cache_init_late+0x33/0x66 mm/slab.c:1276
start_kernel+0x2f5/0x48f init/main.c:1059
secondary_startup_64_no_verify+0xce/0xdb
irq event stamp: 43538
hardirqs last enabled at (43537): [<ffffffff813584dd>] kvm_wait arch/x86/kernel/kvm.c:1066 [inline]
hardirqs last enabled at (43537): [<ffffffff813584dd>] kvm_wait+0x8d/0x100 arch/x86/kernel/kvm.c:1048
hardirqs last disabled at (43538): [<ffffffff897f00fb>] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106
softirqs last enabled at (1978): [<ffffffff814842d3>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last enabled at (1978): [<ffffffff814842d3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
softirqs last disabled at (1893): [<ffffffff814842d3>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (1893): [<ffffffff814842d3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(vmap_area_lock);
<Interrupt>
lock(vmap_area_lock);
*** DEADLOCK ***
4 locks held by syz-executor.3/8232:
#0: ffff88807f438460 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0xf1/0x4a0 fs/namei.c:3777
#1: ffff8880364bb5c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff8880364bb5c0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x1aa/0x4a0 fs/namei.c:3784
#2: ffff88807f43c990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xfb4/0x14a0 fs/jbd2/transaction.c:461
#3: ffff88814b164018 (&bgl->locks[i].lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
#3: ffff88814b164018 (&bgl->locks[i].lock){+.+.}-{2:2}, at: ext4_lock_group fs/ext4/ext4.h:3491 [inline]
#3: ffff88814b164018 (&bgl->locks[i].lock){+.+.}-{2:2}, at: __ext4_new_inode+0x2af2/0x5690 fs/ext4/ialloc.c:1096
stack backtrace:
CPU: 1 PID: 8232 Comm: syz-executor.3 Not tainted 6.0.0-rc1-syzkaller-00066-g3b06a2755758 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
<IRQ>
__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+0x14a2/0x56d0 kernel/locking/lockdep.c:5007
lock_acquire kernel/locking/lockdep.c:5666 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
__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:1836
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+0x46/0x14f lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514
print_other_cpu_stall kernel/rcu/tree_stall.h:619 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:762 [inline]
rcu_pending kernel/rcu/tree.c:3660 [inline]
rcu_sched_clock_irq+0x2404/0x2530 kernel/rcu/tree.c:2342
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+0x1c0/0xe40 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
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1070
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 83 2c 4c 00 66 90 0f 00 2d 7a 44 b4 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 56 2b 4c 00 8b 74 24 0c
RSP: 0018:ffffc90003fb7958 EFLAGS: 00000246
RAX: 000000000000aa11 RBX: 0000000000000000 RCX: 1ffffffff21229f6
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88814b164000 R08: 0000000000000001 R09: ffffffff908da9df
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffed102962c800 R14: 0000000000000001 R15: ffff8880b9b3ae40
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+0x8c7/0xb50 kernel/locking/qspinlock.c:511
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:114 [inline]
do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
spin_lock include/linux/spinlock.h:349 [inline]
ext4_lock_group fs/ext4/ext4.h:3491 [inline]
__ext4_new_inode+0x2af2/0x5690 fs/ext4/ialloc.c:1096
ext4_symlink+0x5a8/0xa00 fs/ext4/namei.c:3356
vfs_symlink fs/namei.c:4378 [inline]
vfs_symlink+0x365/0x5b0 fs/namei.c:4363
do_symlinkat+0x261/0x2e0 fs/namei.c:4407
__do_sys_symlinkat fs/namei.c:4424 [inline]
__se_sys_symlinkat fs/namei.c:4421 [inline]
__x64_sys_symlinkat+0x93/0xc0 fs/namei.c:4421
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: 0033:0x7fbfa4688b87
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 01 00 00 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:00007ffcd6cb0ec8 EFLAGS: 00000202 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbfa4688b87
RDX: 00007fbfa46e323e RSI: 00000000ffffff9c RDI: 00007ffcd6cb0f90
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffcd6cb0d60
R10: 00007ffcd6cb0c17 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcd6cb0f90
</TASK>
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 01 00 00 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:00007ffcd6cb0ec8 EFLAGS: 00000202 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbfa4688b87
RDX: 00007fbfa46e323e RSI: 00000000ffffff9c RDI: 00007ffcd6cb0f90
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffcd6cb0d60
R10: 00007ffcd6cb0c17 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffcd6cb0f90
</TASK>