rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=9c1c/1/0x4000000000000000 softirq=15666/15670 fqs=1
rcu: (detected by 1, t=10505 jiffies, g=11365, q=1093 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6899 Comm: syz.2.276 Not tainted 6.13.0-syzkaller-09692-g235174b2bed8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:103 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x64/0x290 mm/kasan/generic.c:189
Code: 48 c1 eb 03 49 ba 00 00 00 00 00 fc ff df 4e 8d 1c 13 49 ff c8 4d 89 c1 49 c1 e9 03 49 be 01 00 00 00 00 fc ff df 4f 8d 3c 31 <4c> 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c
RSP: 0018:ffffc90000007d10 EFLAGS: 00000803
RAX: 0000000000000001 RBX: 1ffffffff203680e RCX: ffffffff81acd0e0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901b4070
RBP: 000000000001ffff R08: ffffffff901b4077 R09: 1ffffffff203680e
R10: dffffc0000000000 R11: fffffbfff203680e R12: 1ffff110170c58eb
R13: 0000000000000001 R14: dffffc0000000001 R15: fffffbfff203680f
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dfa6d70d88 CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:570 [inline]
cpu_online include/linux/cpumask.h:1116 [inline]
trace_hrtimer_expire_exit include/trace/events/timer.h:306 [inline]
__run_hrtimer kernel/time/hrtimer.c:1741 [inline]
__hrtimer_run_queues+0x600/0xd30 kernel/time/hrtimer.c:1802
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1864
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:obj_cgroup_put include/linux/memcontrol.h:775 [inline]
RIP: 0010:mod_objcg_state+0x5d9/0x930 mm/memcontrol.c:2756
Code: 3c 23 00 74 08 4c 89 f7 e8 84 cc f7 ff f6 84 24 81 00 00 00 02 0f 85 89 00 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 8b 7c 24 28 <48> 85 ff 74 05 e8 9d 86 00 00 48 c7 44 24 60 0e 36 e0 45 48 8b 44
RSP: 0018:ffffc900050b73e0 EFLAGS: 00000206
RAX: e28f1908fddb8100 RBX: 1ffff92000a16e8c RCX: ffffffff819b4cfa
RDX: dffffc0000000000 RSI: ffffffff8c0aa680 RDI: 0000000000000000
RBP: ffffc900050b74e8 R08: ffffffff942f6877 R09: 1ffffffff285ed0e
R10: dffffc0000000000 R11: fffffbfff285ed0f R12: dffffc0000000000
R13: 0000000000000058 R14: ffffc900050b7460 R15: 0000000000000246
__memcg_slab_free_hook+0x9f/0x310 mm/memcontrol.c:3024
memcg_slab_free_hook mm/slub.c:2178 [inline]
slab_free mm/slub.c:4606 [inline]
kmem_cache_free+0x222/0x410 mm/slub.c:4711
anon_vma_free mm/rmap.c:137 [inline]
__put_anon_vma+0x128/0x2d0 mm/rmap.c:2568
put_anon_vma include/linux/rmap.h:116 [inline]
unlink_anon_vmas+0x492/0x5f0 mm/rmap.c:444
free_pgtables+0x567/0x840 mm/memory.c:408
exit_mmap+0x522/0xd40 mm/mmap.c:1295
__mmput+0x115/0x420 kernel/fork.c:1345
exit_mm+0x220/0x310 kernel/exit.c:570
do_exit+0x9ad/0x28e0 kernel/exit.c:925
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3036
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [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+0xce/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: 0033:0x7fa23f18cda9
Code: Unable to access opcode bytes at 0x7fa23f18cd7f.
RSP: 002b:00007ffd0904cb68 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fa23f3a7ba0 RCX: 00007fa23f18cda9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fa23f3a7ba0 R08: 0000000000000000 R09: 00007ffd0904ce6f
R10: 000000000003fd54 R11: 0000000000000246 R12: 0000000000014f8d
R13: 00007ffd0904cc70 R14: 0000000000000032 R15: ffffffffffffffff
rcu: rcu_preempt kthread starved for 10500 jiffies! g11365 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:26104 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x190e/0x4c90 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2024
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2226
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 1320 Comm: kworker/u8:6 Not tainted 6.13.0-syzkaller-09692-g235174b2bed8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x1ba4/0x2d30 kernel/smp.c:885
Code: 03 84 c0 75 7e 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 b0 e8 0b 00 41 83 e4 01 4c 8b 64 24 68 75 07 e8 60 e4 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00
RSP: 0018:ffffc900044bf640 EFLAGS: 00000293
RAX: ffffffff81b38855 RBX: 1ffff110170c8c91 RCX: ffff888027a80000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900044bf840 R08: ffffffff81b38820 R09: 1ffffffff285ed08
R10: dffffc0000000000 R11: fffffbfff285ed09 R12: ffff8880b873fb08
R13: ffff8880b8646488 R14: ffff8880b873fb00 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f848100b440 CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2324
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xd2/0x1c0 kernel/jump_label.c:240
static_key_disable+0x1a/0x20 kernel/jump_label.c:248
toggle_allocation_gate+0x1bf/0x260 mm/kfence/core.c:854
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244