rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=73ec/1/0x4000000000000000 softirq=72761/72764 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18787/1:b..l P18794/1:b..l
rcu: (detected by 0, t=10505 jiffies, g=106241, q=240 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 18779 Comm: syz-executor.5 Not tainted 6.9.0-rc7-syzkaller-00136-gf4345f05c0df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:240 [inline]
RIP: 0010:__lock_acquire+0xf27/0x1fd0 kernel/locking/lockdep.c:5133
Code: 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 00 55 f3 92 be 08 00 00 00 e8 47 1c 88 00 48 0f a3 1d bf ba 80 11 0f 83 56 02 00 00 <48> 69 c3 c8 00 00 00 48 8d 98 00 b4 c1 92 48 bf 00 00 00 00 00 fc
RSP: 0018:ffffc90000a087f0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 000000000000006b RCX: ffffffff81729a39
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92f35508
RBP: fc76794eeabd53a6 R08: ffffffff92f3550f R09: 1ffffffff25e6aa1
R10: dffffc0000000000 R11: fffffbfff25e6aa2 R12: ffff888021f30000
R13: ffff888021f30000 R14: 0000000000000000 R15: ffff888021f30000
FS: 000055555bfc3480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad47a74000 CR3: 0000000054082000 CR4: 0000000000350ef0
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
debug_objects_fill_pool+0x9f/0x9b0 lib/debugobjects.c:614
debug_object_activate+0x135/0x510 lib/debugobjects.c:704
debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
debug_activate kernel/time/hrtimer.c:478 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1090
__run_hrtimer kernel/time/hrtimer.c:1709 [inline]
__hrtimer_run_queues+0x6d5/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch+0x1f1/0x870 kernel/sched/core.c:5283
Code: 48 83 c4 08 4c 89 f7 e8 9d 38 00 00 0f 1f 44 00 00 4c 89 f7 e8 c0 69 24 0a e8 1b 95 36 00 fb 48 8b 5d c0 48 8d bb f0 15 00 00 <48> 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 0f b6 04 30
RSP: 0018:ffffc90004c6f968 EFLAGS: 00000286
RAX: f6f574a7b8092400 RBX: ffff888021f30000 RCX: ffffffff9472d603
RDX: dffffc0000000000 RSI: ffffffff8bcab8a0 RDI: ffff888021f315f0
RBP: ffffc90004c6f9b0 R08: ffffffff8fa8fa2f R09: 1ffffffff1f51f45
R10: dffffc0000000000 R11: fffffbfff1f51f46 R12: 1ffff110172a7e7f
R13: dffffc0000000000 R14: ffff8880b953e680 R15: ffff8880b953f3f8
context_switch kernel/sched/core.c:5412 [inline]
__schedule+0x17f0/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
do_nanosleep+0x197/0x600 kernel/time/hrtimer.c:2051
hrtimer_nanosleep+0x227/0x470 kernel/time/hrtimer.c:2104
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
__se_sys_clock_nanosleep+0x32d/0x3c0 kernel/time/posix-timers.c:1373
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc626aa9175
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007fff161a5b30 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007fc626babf80 RCX: 00007fc626aa9175
RDX: 00007fff161a5b70 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fc626bad980 R08: 0000000000000000 R09: 00007fc6278cc0b0
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000000b87c2
R13: 00007fc626bac12c R14: 00007fff161a5c80 R15: 0000000000000032
task:syz-executor.4 state:R running task stack:27448 pid:18794 tgid:18793 ppid:15102 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6925
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6949
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
do_anonymous_page mm/memory.c:4490 [inline]
do_pte_missing mm/memory.c:3878 [inline]
handle_pte_fault mm/memory.c:5300 [inline]
__handle_mm_fault+0x59f7/0x7250 mm/memory.c:5441
handle_mm_fault+0x3c2/0x8a0 mm/memory.c:5606
do_user_addr_fault arch/x86/mm/fault.c:1331 [inline]
handle_page_fault arch/x86/mm/fault.c:1474 [inline]
exc_page_fault+0x446/0x8a0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7efc1362c9b1
RSP: 002b:00007efc144b4f00 EFLAGS: 00010206
RAX: 00007efc1362c9a0 RBX: 00007efc137abf80 RCX: 0000000020000000
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 00000000200002c0
RBP: 00007efc136ca49e R08: 000000000000007f R09: 0000000000000c01
R10: 00000000200002c0 R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000b R14: 00007efc137abf80 R15: 00007ffed0511f38
task:syz-executor.3 state:R running task stack:25208 pid:18787 tgid:18785 ppid:14190 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7068
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:__sanitizer_cov_trace_pc+0x46/0x70 kernel/kcov.c:212
Code: ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 14 16 00 00 00 74 2c 8b 91 f0 15 00 00 83 fa 02 75 21 48 8b 91 f8 15 00 00 48 8b 32 <48> 8d 7e 01 8b 89 f4 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2
RSP: 0000:ffffc9000a677cd0 EFLAGS: 00000246
RAX: ffffffff8b74fed4 RBX: 00007fad47a74000 RCX: ffff888066249e00
RDX: ffffc90012800000 RSI: 000000000003ffff RDI: 000055555bad9fff
RBP: 0000000000000007 R08: ffffffff8b74feb8 R09: ffffffff8b74fd02
R10: 0000000000000003 R11: ffff888066249e00 R12: ffff888021ec1040
R13: 000055555bad9fff R14: ffff888021ec1008 R15: fffffffffffffff5
mtree_range_walk+0x2c4/0x8e0 lib/maple_tree.c:2781
mas_state_walk lib/maple_tree.c:3678 [inline]
mas_walk+0x83/0x280 lib/maple_tree.c:4909
lock_vma_under_rcu+0x231/0x730 mm/memory.c:5758
do_user_addr_fault arch/x86/mm/fault.c:1323 [inline]
handle_page_fault arch/x86/mm/fault.c:1474 [inline]
exc_page_fault+0x17b/0x8a0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fad51029786
RSP: 002b:00007fad51e82530 EFLAGS: 00010206
RAX: 0000000000c74001 RBX: 00007fad51e825d0 RCX: 0000000000000038
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007fad51e82670
RBP: 0000000000000102 R08: 00007fad46e00000 R09: 0000000000c74000
R10: 0000000000000000 R11: 00007fad51e825e0 R12: 0000000000000001
R13: 00007fad510ecfe0 R14: 0000000000000000 R15: 00007fad51e82670
rcu: rcu_preempt kthread starved for 10505 jiffies! g106241 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:25296 pid:16 tgid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
kthread+0x2f2/0x390 kernel/kthread.c:388
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:
CPU: 0 PID: 2832 Comm: kworker/u8:11 Not tainted 6.9.0-rc7-syzkaller-00136-gf4345f05c0df #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1899/0x2a00 kernel/smp.c:855
Code: 89 e6 83 e6 01 31 ff e8 15 db 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 c0 d6 0b 00 eb 38 f3 90 42 0f b6 04 23 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 a4 d6 0b 00 eb e4 44
RSP: 0018:ffffc90009def6e0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110172a8869 RCX: ffff88802b5c5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90009def8e0 R08: ffffffff818a31ab R09: 1ffffffff25e6aa0
R10: dffffc0000000000 R11: fffffbfff25e6aa1 R12: dffffc0000000000
R13: ffff8880b9544348 R14: ffff8880b943f7c0 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3973ad988 CR3: 000000000e134000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2086 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2296
text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2494
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3348
worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244