rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=c6bc/1/0x4000000000000000 softirq=170091/170092 fqs=5
(detected by 1, t=10502 jiffies, g=232329, q=485 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6246 Comm: syz-executor.1 Not tainted 6.1.0-syzkaller-04288-g13a7c8964afc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0xdf/0x190 mm/kasan/generic.c:189
Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c
RSP: 0018:ffffc90000007ce8 EFLAGS: 00000086
RAX: fffffbfff23b8e7c RBX: fffffbfff23b8e7d RCX: ffffffff81645c44
RDX: fffffbfff23b8e7d RSI: 0000000000000004 RDI: ffffffff91dc73e0
RBP: fffffbfff23b8e7c R08: 0000000000000000 R09: ffffffff91dc73e3
R10: fffffbfff23b8e7c R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff8a4eb960 R14: 1ffff92000000faa R15: ffff888075e0b340
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30221000 CR3: 000000000c48e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:72 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline]
debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline]
do_raw_spin_unlock+0x54/0x230 kernel/locking/spinlock_debug.c:140
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock_irqrestore+0x22/0x70 kernel/locking/spinlock.c:194
debug_object_deactivate lib/debugobjects.c:761 [inline]
debug_object_deactivate+0x268/0x300 lib/debugobjects.c:727
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x422/0xfb0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x320/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0x180/0x640 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:985 [inline]
RIP: 0010:debug_check_no_obj_freed+0x9f/0x420 lib/debugobjects.c:1027
Code: 48 ba eb 83 b5 80 46 86 c8 61 48 8b 44 24 18 48 c1 e8 0c 48 0f af c2 48 c1 e8 32 48 8d 04 c0 48 c1 e0 03 48 8d 90 a8 33 d9 91 <48> 05 a0 33 d9 91 48 89 54 24 10 48 89 44 24 20 4c 8b 64 24 20 49
RSP: 0018:ffffc90003f0f420 EFLAGS: 00000202
RAX: 00000000000481f8 RBX: ffff88805a5e3000 RCX: ffff888028e9e230
RDX: ffffffff91ddb5a0 RSI: ffff88805a5e3000 RDI: ffff88805a5e3000
RBP: ffff88805a5e3000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffc90003f0ff28 R12: 0000000000000000
R13: 0000000000001000 R14: dead000000000100 R15: dffffc0000000000
free_pages_prepare mm/page_alloc.c:1452 [inline]
free_pcp_prepare+0x322/0xc00 mm/page_alloc.c:1496
free_unref_page_prepare mm/page_alloc.c:3369 [inline]
free_unref_page_list+0x176/0xcd0 mm/page_alloc.c:3510
release_pages+0xcb1/0x1330 mm/swap.c:1076
tlb_batch_pages_flush+0xa8/0x1a0 mm/mmu_gather.c:97
zap_pte_range mm/memory.c:1480 [inline]
zap_pmd_range mm/memory.c:1529 [inline]
zap_pud_range mm/memory.c:1558 [inline]
zap_p4d_range mm/memory.c:1579 [inline]
unmap_page_range+0x2258/0x3c30 mm/memory.c:1600
unmap_single_vma+0x190/0x2a0 mm/memory.c:1646
unmap_vmas+0x226/0x370 mm/memory.c:1685
exit_mmap+0x18d/0x7b0 mm/mmap.c:3085
__mmput+0x128/0x4c0 kernel/fork.c:1207
mmput+0x60/0x70 kernel/fork.c:1229
exit_mm kernel/exit.c:563 [inline]
do_exit+0x9ac/0x2950 kernel/exit.c:854
do_group_exit+0xd4/0x2a0 kernel/exit.c:1010
get_signal+0x21c3/0x2450 kernel/signal.c:2859
arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe0aaa8c0a9
Code: Unable to access opcode bytes at 0x7fe0aaa8c07f.
RSP: 002b:00007fe0ab796218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fe0aababf88 RCX: 00007fe0aaa8c0a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe0aababf88
RBP: 00007fe0aababf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe0aababf8c
R13: 00007fffb41e1f6f R14: 00007fe0ab796300 R15: 0000000000022000
rcu: rcu_preempt kthread starved for 10492 jiffies! g232329 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:28656 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1656
rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1855
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 3891 Comm: kworker/u4:9 Not tainted 6.1.0-syzkaller-04288-g13a7c8964afc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0x43f/0x10a0 kernel/smp.c:987
Code: e6 e8 05 fb 0a 00 45 85 e4 74 48 48 8b 04 24 49 89 c5 83 e0 07 49 c1 ed 03 49 89 c4 4d 01 fd 41 83 c4 03 e8 33 fe 0a 00 f3 90 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 4e 0a 00 00 8b 43 08 31
RSP: 0000:ffffc90004f8f978 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9843ce0 RCX: 0000000000000000
RDX: ffff888022ff57c0 RSI: ffffffff817653ad RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003
R13: ffffed101730879d R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9fd5ac000 CR3: 000000000c48e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:1155
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1772 [inline]
text_poke_bp_batch+0x22e/0x6b0 arch/x86/kernel/alternative.c:1963
text_poke_flush arch/x86/kernel/alternative.c:2131 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2128 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2138
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:799 [inline]
toggle_allocation_gate+0xf8/0x230 mm/kfence/core.c:791
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308