rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5834/1:b..l P6054/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=10449, q=998 ncpus=2)
task:syz.5.32 state:R running task stack:24128 pid:6054 tgid:6054 ppid:5826 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6935
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock+0x18c/0x1e0 kernel/sched/wait.c:108
sock_def_readable+0x20f/0x5a0 net/core/sock.c:3453
__netlink_sendskb net/netlink/af_netlink.c:1268 [inline]
netlink_broadcast_deliver net/netlink/af_netlink.c:1398 [inline]
do_one_broadcast net/netlink/af_netlink.c:1485 [inline]
netlink_broadcast_filtered+0xea1/0x12a0 net/netlink/af_netlink.c:1530
netlink_broadcast+0x39/0x50 net/netlink/af_netlink.c:1554
uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline]
kobject_uevent_net_broadcast+0x38f/0x580 lib/kobject_uevent.c:410
kobject_uevent_env+0x57d/0x8e0 lib/kobject_uevent.c:608
device_remove drivers/base/dd.c:567 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x4ab/0x7c0 drivers/base/dd.c:1296
driver_detach+0x1fb/0x2d0 drivers/base/dd.c:1359
bus_remove_driver+0x1f3/0x320 drivers/base/bus.c:744
usb_gadget_unregister_driver+0x4e/0x70 drivers/usb/gadget/udc/core.c:1732
raw_release+0xf6/0x1e0 drivers/usb/gadget/legacy/raw_gadget.c:462
__fput+0x23e/0xa50 fs/file_table.c:450
task_work_run+0x251/0x310 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff1b3185d29
RSP: 002b:00007fff6cfb53a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ff1b3377ba0 RCX: 00007ff1b3185d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007ff1b3377ba0 R08: 0000000000000000 R09: 00007fff6cfb569f
R10: 000000000003fdac R11: 0000000000000246 R12: 0000000000018fd9
R13: 00007fff6cfb54b0 R14: 0000000000000032 R15: ffffffffffffffff
task:syz-executor state:R running task stack:19960 pid:5834 tgid:5834 ppid:5823 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6935
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x18f8/0x22d0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1127 [inline]
free_unref_folios+0xe39/0x18b0 mm/page_alloc.c:2706
folios_put_refs+0x76c/0x860 mm/swap.c:962
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x593/0x1820 mm/shmem.c:1044
shmem_truncate_range mm/shmem.c:1156 [inline]
shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1284
evict+0x4ea/0x9a0 fs/inode.c:796
do_unlinkat+0x512/0x830 fs/namei.c:4594
__do_sys_unlink fs/namei.c:4635 [inline]
__se_sys_unlink fs/namei.c:4633 [inline]
__x64_sys_unlink+0x47/0x50 fs/namei.c:4633
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb9609852d7
RSP: 002b:00007ffc74f4f068 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb9609852d7
RDX: 00007ffc74f4f090 RSI: 00007ffc74f4f120 RDI: 00007ffc74f4f120
RBP: 00007ffc74f4f120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc74f501a0
R13: 00007fb960a018f4 R14: 00007ffc74f501e0 R15: 0000000000000003
rcu: rcu_preempt kthread starved for 10526 jiffies! g10449 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:25880 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 967 Comm: kworker/1:2 Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient htable_gc
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:109 [inline]
RIP: 0010:do_raw_spin_lock+0x115/0x370 kernel/locking/spinlock_debug.c:116
Code: 04 17 84 c0 0f 85 b3 01 00 00 4c 89 6c 24 30 4c 8d 74 24 60 48 89 5c 24 18 8b 03 65 8b 0d 4f bd 87 7e 39 c8 0f 84 21 01 00 00 <4d> 89 f5 49 c1 ed 03 41 0f b6 44 15 00 84 c0 48 89 d3 0f 85 a2 01
RSP: 0018:ffffc90000a18540 EFLAGS: 00000082
RAX: 00000000ffffffff RBX: ffff8880b872c888 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 1ffff920001430b0 RDI: ffff8880b872c880
RBP: ffffc90000a18610 R08: ffffffff942a488f R09: 1ffffffff2854911
R10: dffffc0000000000 R11: fffffbfff2854912 R12: ffff8880b872c880
R13: ffff8880b872c890 R14: ffffc90000a185a0 R15: 1ffff110170e5911
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fe0eff8 CR3: 000000005e91e000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162
hrtimer_interrupt+0xf9/0xa40 kernel/time/hrtimer.c:1846
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae 6e 3a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 15 a2 f5 65 8b 05 e4 68 38 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90000a188c0 EFLAGS: 00000206
RAX: 3627325db3059000 RBX: 1ffff9200014311c RCX: ffffffff817b274a
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: 0000000000000001
RBP: ffffc90000a18950 R08: ffffffff942a49a7 R09: 1ffffffff2854934
R10: dffffc0000000000 R11: fffffbfff2854935 R12: dffffc0000000000
R13: 1ffff92000143118 R14: ffffc90000a188e0 R15: 0000000000000246
dummy_timer+0x44d6/0x4620
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x59d/0xd30 kernel/time/hrtimer.c:1803
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:debug_smp_processor_id+0x0/0x20 lib/smp_processor_id.c:59
Code: f5 9e 8e 48 89 de e8 4f fb 31 f9 e9 66 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 c7 c7 80 b0 5f 8c 48 c7 c6 c0 b0 5f 8c eb 1c 66 2e
RSP: 0018:ffffc90003f1f778 EFLAGS: 00000202
RAX: ffffc90003f1f910 RBX: 1ffff920007e3f3c RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90003f1f920
RBP: ffffc90003f1f990 R08: ffffc90003f1f91f R09: ffffc90003f1f910
R10: dffffc0000000000 R11: fffff520007e3f24 R12: ffffc90003f1f910
R13: 1ffff920007e3f38 R14: dffffc0000000000 R15: dffffc0000000000
__schedule+0xbb/0x4c30 kernel/sched/core.c:6651
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:htable_selective_cleanup+0x266/0x310 net/netfilter/xt_hashlimit.c:375
Code: c1 7c d9 4c 89 f7 e8 89 e0 04 f8 eb cf e8 e2 78 9e f7 eb 05 e8 db 78 9e f7 48 8b 7c 24 28 e8 e1 72 ca 01 48 c7 c7 00 d2 13 8d 77 01 00 00 31 d2 e8 7e 36 6e f7 2e 2e 2e 31 c0 48 8b 74 24 08
RSP: 0018:ffffc90003f1fb20 EFLAGS: 00000246
RAX: 3627325db3059000 RBX: 0000000000002000 RCX: ffffffff817b274a
RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: ffffffff8d13d200
RBP: ffffc90004efcb38 R08: ffffffff942a49a7 R09: 1ffffffff2854934
R10: dffffc0000000000 R11: fffffbfff2854935 R12: 0000000000000000
R13: 1ffffffff1cc2040 R14: ffffc90004eef08c R15: dffffc0000000000
htable_gc+0x1f/0xa0 net/netfilter/xt_hashlimit.c:385
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa68/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244