rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (2 ticks this GP) idle=e74c/1/0x4000000000000000 softirq=17628/17628 fqs=1
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P23/1:b..l P7324/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=29533, q=34 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7341 Comm: syz-executor.1 Not tainted 6.7.0-rc4-next-20231204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:hlock_class+0x1d/0x130 kernel/locking/lockdep.c:223
Code: 88 66 66 2e 0f 1f 84 00 00 00 00 00 90 48 b8 00 00 00 00 00 fc ff df 53 48 89 fb 48 83 c7 20 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e d2 00 00 00 0f b7 5b 20 66 81 e3 ff 1f 0f
RSP: 0018:ffffc900001f0a88 EFLAGS: 00000802
RAX: 0000000000000000 RBX: ffff88807720e4a0 RCX: 0000000000000004
RDX: 1ffff1100ee41c98 RSI: 0000000000000008 RDI: ffff88807720e4c0
RBP: 0000000000000002 R08: 0000000000000000 R09: fffffbfff24259e8
R10: ffffffff9212cf47 R11: 0000000000000004 R12: 0000000000000002
R13: 0000000000000000 R14: ffff88807720e4a0 R15: 0000000000000001
FS: 00007f68efbe16c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f76396c56be CR3: 0000000018e8c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_wait_context kernel/locking/lockdep.c:4774 [inline]
__lock_acquire+0x42f/0x3b30 kernel/locking/lockdep.c:5087
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x530 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x195/0x540 lib/debugobjects.c:708
debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
debug_activate kernel/time/hrtimer.c:477 [inline]
enqueue_hrtimer+0x25/0x320 kernel/time/hrtimer.c:1087
__run_hrtimer kernel/time/hrtimer.c:1705 [inline]
__hrtimer_run_queues+0xa0f/0xc20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x10c/0x410 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x60 kernel/kcov.c:203
Code: ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 48 8b 15 74 a7 7b 7e 65 8b 05 75 a7 7b 7e a9 00 01 ff 00 <48> 8b 34 24 74 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc9000364f688 EFLAGS: 00000246
RAX: 0000000080000000 RBX: ffffc9000364f908 RCX: ffffc9000ab12000
RDX: ffff88807720d940 RSI: ffff888034d4c2c0 RDI: ffffc9000364f908
RBP: ffff888034d4c2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffff888034d4c2c0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040
xas_descend+0x19/0x4e0 lib/xarray.c:205
xas_load+0xe0/0x140 lib/xarray.c:244
xas_find+0x60b/0x870 lib/xarray.c:1250
xas_next_entry+0x267/0x3c0 include/linux/xarray.h:1704
next_uptodate_folio+0x29/0x550 mm/filemap.c:3383
filemap_map_pages+0x1bd/0x1290 mm/filemap.c:3521
do_fault_around mm/memory.c:4594 [inline]
do_read_fault mm/memory.c:4627 [inline]
do_fault mm/memory.c:4766 [inline]
do_pte_missing mm/memory.c:3738 [inline]
handle_pte_fault mm/memory.c:5042 [inline]
__handle_mm_fault+0x2833/0x3cf0 mm/memory.c:5183
handle_mm_fault+0x476/0xa00 mm/memory.c:5348
faultin_page mm/gup.c:958 [inline]
__get_user_pages+0x4b1/0x1490 mm/gup.c:1241
populate_vma_page_range+0x2d4/0x420 mm/gup.c:1679
__mm_populate+0x1d6/0x380 mm/gup.c:1788
mm_populate include/linux/mm.h:3391 [inline]
vm_mmap_pgoff+0x2cc/0x3c0 mm/util.c:561
ksys_mmap_pgoff+0x7d/0x5a0 mm/mmap.c:1425
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:93 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
__x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:86
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f68eee7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f68efbe10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f68eef9bf80 RCX: 00007f68eee7cae9
RDX: b635773f06ebbeef RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f68eeec847a R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f68eef9bf80 R15: 00007ffdd50a1a48
task:syz-executor.5 state:R running task stack:26064 pid:7324 tgid:7324 ppid:5092 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5399 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6726
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6903
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_read_unlock_irqrestore include/linux/rwlock_api_smp.h:242 [inline]
_raw_read_unlock_irqrestore+0x5d/0x70 kernel/locking/spinlock.c:268
stack_depot_save_flags+0x1d7/0x740 lib/stackdepot.c:515
save_stack+0x16b/0x1f0 mm/page_owner.c:131
__reset_page_owner+0x51/0x2e0 mm/page_owner.c:151
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2390
free_unref_page_list+0xe6/0xb40 mm/page_alloc.c:2576
release_pages+0x32a/0x14f0 mm/swap.c:1042
__folio_batch_release+0x77/0xe0 mm/swap.c:1062
folio_batch_release include/linux/pagevec.h:83 [inline]
shmem_undo_range+0x57a/0x1140 mm/shmem.c:1004
shmem_truncate_range mm/shmem.c:1113 [inline]
shmem_evict_inode+0x39f/0xba0 mm/shmem.c:1241
evict+0x2ed/0x6b0 fs/inode.c:666
iput_final fs/inode.c:1777 [inline]
iput.part.0+0x570/0x7c0 fs/inode.c:1803
iput+0x5c/0x80 fs/inode.c:1793
dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
__dentry_kill+0x3b8/0x640 fs/dcache.c:609
dentry_kill fs/dcache.c:735 [inline]
dput+0x7eb/0xd90 fs/dcache.c:915
__fput+0x3b9/0xbb0 fs/file_table.c:390
task_work_run+0x14c/0x240 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa85/0x2ad0 kernel/exit.c:871
do_group_exit+0xd3/0x2a0 kernel/exit.c:1021
get_signal+0x2395/0x2770 kernel/signal.c:2893
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x11e/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:296
do_syscall_64+0x4d/0x110 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f4da4a7cb23
RSP: 002b:00007fff151bf6e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: 00007f4da57d5000 RBX: 00007f4da3dff6c0 RCX: 00007f4da4a7cb23
RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000020022 R11: 0000000000000246 R12: 00007fff151bf990
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
task:kworker/1:0 state:R running task stack:25664 pid:23 tgid:23 ppid:2 flags:0x00004000
Workqueue: events_power_efficient gc_worker
Call Trace:
context_switch kernel/sched/core.c:5399 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6726
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7046
irqentry_exit+0x36/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:284 [inline]
RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
RIP: 0010:gc_worker+0x2e1/0x17e0 net/netfilter/nf_conntrack_core.c:1490
Code: 00 00 48 c7 c7 c8 2e 3a 8f e8 2b 8d af f8 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 59 2a cf f8 48 85 db 58 0f 85 9f 10 00 00 ba 2e cf f8 eb 07 e8 b3 2e cf f8 f3 90 44 8b 35 2a 48 81 06 31
RSP: 0018:ffffc900001d7be0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff88b8f24d
RDX: ffff8880152ed940 RSI: ffffffff88b8f25c RDI: 0000000000000007
RBP: ffff888026a00000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: 00000000000356e3
R13: dffffc0000000000 R14: 000000000006adc5 R15: 0000000000040000
process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: rcu_preempt kthread starved for 10501 jiffies! g29533 f0x0 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:27792 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5399 [inline]
__schedule+0xf15/0x5c80 kernel/sched/core.c:6726
__schedule_loop kernel/sched/core.c:6801 [inline]
schedule+0xe7/0x270 kernel/sched/core.c:6816
schedule_timeout+0x136/0x290 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
rcu_gp_kthread+0x245/0x380 kernel/rcu/tree.c:1830
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 5291 Comm: kworker/u4:12 Not tainted 6.7.0-rc4-next-20231204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e4/0x1570 kernel/smp.c:855
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 2e c5 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 44 0e 00 00 8b 43 08 31
RSP: 0018:ffffc900051cf920 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9941a60 RCX: ffffffff817c5038
RDX: ffff8880271c5940 RSI: ffffffff817c5012 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffffed101732834d
R13: 0000000000000001 R14: ffff8880b9941a68 R15: ffff8880b983d8c0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff3f3433d58 CR3: 000000000cf78000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2007 [inline]
text_poke_bp_batch+0x22b/0x750 arch/x86/kernel/alternative.c:2217
text_poke_flush arch/x86/kernel/alternative.c:2408 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2405 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2415
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d7/0x400 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:826 [inline]
toggle_allocation_gate+0xf4/0x250 mm/kfence/core.c:818
process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242