rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11864/1:b..l P11857/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=55353, q=212 ncpus=2)
task:syz.3.1749 state:R running task stack:24496 pid:11857 tgid:11853 ppid:5245 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7012
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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5829
Code: 2b 00 74 08 4c 89 f7 e8 ca 75 8e 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0000:ffffc90004af75e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200095eec8 RCX: cfcb61a6e66aab00
RDX: dffffc0000000000 RSI: ffffffff8c0ae0e0 RDI: ffffffff8c611a00
RBP: ffffc90004af7730 R08: ffffffff942e9807 R09: 1ffffffff285d300
R10: dffffc0000000000 R11: fffffbfff285d301 R12: 1ffff9200095eec4
R13: dffffc0000000000 R14: ffffc90004af7640 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
percpu_ref_get_many+0x36/0x140 include/linux/percpu-refcount.h:202
percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
css_get include/linux/cgroup_refcnt.h:11 [inline]
mem_cgroup_commit_charge mm/memcontrol.c:2397 [inline]
charge_memcg+0xd2/0x1e0 mm/memcontrol.c:4481
__mem_cgroup_charge+0x27/0x80 mm/memcontrol.c:4492
mem_cgroup_charge include/linux/memcontrol.h:694 [inline]
shmem_alloc_and_add_folio+0x8a1/0x13d0 mm/shmem.c:1837
shmem_get_folio_gfp+0x5a9/0x20a0 mm/shmem.c:2349
shmem_get_folio mm/shmem.c:2455 [inline]
shmem_write_begin+0x17e/0x460 mm/shmem.c:3060
generic_perform_write+0x344/0x6d0 mm/filemap.c:4056
shmem_file_write_iter+0xf9/0x120 mm/shmem.c:3235
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xa6d/0xc90 fs/read_write.c:683
ksys_write+0x183/0x2b0 fs/read_write.c:736
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: 0033:0x7fe7dad7cadf
RSP: 002b:00007fe7da7dddf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000400000 RCX: 00007fe7dad7cadf
RDX: 0000000000400000 RSI: 00007fe7d0400000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000001262
R10: 0000000020002502 R11: 0000000000000293 R12: 0000000000000007
R13: 00007fe7da7ddef0 R14: 00007fe7da7ddeb0 R15: 00007fe7d0400000
task:dhcpcd-run-hook state:R running task stack:26784 pid:11864 tgid:11864 ppid:11859 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7012
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_release+0x658/0xa30 kernel/locking/lockdep.c:5850
Code: 3c 3b 00 74 08 4c 89 f7 e8 c5 4a 8e 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc9000526f720 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000a4def6 RCX: ffffc9000526f703
RDX: 0000000000000000 RSI: ffffffff8c0ae0e0 RDI: ffffffff8c611a00
RBP: ffffc9000526f858 R08: ffffffff901db3ef R09: 1ffffffff203b67d
R10: dffffc0000000000 R11: fffffbfff203b67e R12: 1ffff92000a4def0
R13: 0000000000000246 R14: ffffc9000526f7b0 R15: dffffc0000000000
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
is_bpf_text_address+0x280/0x2a0 kernel/bpf/core.c:769
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2329 [inline]
slab_free mm/slub.c:4588 [inline]
kmem_cache_free+0x1a2/0x440 mm/slub.c:4690
do_sys_openat2+0x17a/0x1d0 fs/open.c:1427
do_sys_open fs/open.c:1434 [inline]
__do_sys_openat fs/open.c:1450 [inline]
__se_sys_openat fs/open.c:1445 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1445
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: 0033:0x7f3bca428477
RSP: 002b:00007ffdbbcafee8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3bca428477
RDX: 0000000000090800 RSI: 00005626dc2d4160 RDI: 00000000ffffff9c
RBP: 00005626dc2cef3f R08: 0000000000090800 R09: 00005626dc2d4160
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffdbbcb0048
R13: 00005626dc2cef38 R14: 00005626dc2d4187 R15: 000000000000002f
rcu: rcu_preempt kthread starved for 10486 jiffies! g55353 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:25264 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc3-next-20241016-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d4 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 35 81 9e 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e607ca8 EFLAGS: 00000246
RAX: ffffffff8e6945c0 RBX: ffff888142eef864 RCX: 000000000041df41
RDX: 0000000000000001 RSI: ffff888142eef800 RDI: ffff888142eef864
RBP: 000000000003a5b8 R08: ffff8880b8637a7b R09: 1ffff110170c6f4f
R10: dffffc0000000000 R11: ffffffff8bcc6540 R12: ffff8881446ff000
R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f1343a0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c433780 CR3: 000000007f4fa000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:264
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
rest_init+0x2dc/0x300 init/main.c:747
start_kernel+0x47f/0x500 init/main.c:1102
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147