syzbot

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P11394/1:b..l P35/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=47617, q=454 ncpus=2)
task:kworker/u8:2    state:R  running task     stack:20888 pid:35    tgid:35    ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 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_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 3a 6b 89 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: 0018:ffffc90000ab79e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000156f48 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacce0 RDI: ffffffff8c1feb40
RBP: ffffc90000ab7b40 R08: ffffffff92fa7587 R09: 1ffffffff25f4eb0
R10: dffffc0000000000 R11: fffffbfff25f4eb1 R12: 1ffff92000156f44
R13: dffffc0000000000 R14: ffffc90000ab7a40 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 rcu_read_lock include/linux/rcupdate.h:781 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 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
 </TASK>
task:syz-executor.1  state:R  running task     stack:24224 pid:11394 tgid:11393 ppid:9456   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 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:5758
Code: 2b 00 74 08 4c 89 f7 e8 3a 6b 89 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: 0018:ffffc9000abf7520 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200157eeb0 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacce0 RDI: ffffffff8c1feb40
RBP: ffffc9000abf7680 R08: ffffffff92fa7587 R09: 1ffffffff25f4eb0
R10: dffffc0000000000 R11: fffffbfff25f4eb1 R12: 1ffff9200157eeac
R13: dffffc0000000000 R14: ffffc9000abf7580 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 rcu_read_lock include/linux/rcupdate.h:781 [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+0x9f/0x380 mm/memcontrol.c:3132
 charge_memcg+0xb1/0x160 mm/memcontrol.c:7499
 __mem_cgroup_charge+0x27/0x80 mm/memcontrol.c:7510
 mem_cgroup_charge include/linux/memcontrol.h:691 [inline]
 shmem_alloc_and_add_folio+0x394/0xdb0 mm/shmem.c:1677
 shmem_get_folio_gfp+0x82d/0x1f50 mm/shmem.c:2055
 shmem_get_folio mm/shmem.c:2160 [inline]
 shmem_write_begin+0x170/0x4d0 mm/shmem.c:2743
 generic_perform_write+0x324/0x640 mm/filemap.c:4015
 shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2919
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa74/0xc90 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 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: 0033:0x7fbaa367bdef
RSP: 002b:00007fbaa4435e80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007fbaa367bdef
RDX: 0000000001000000 RSI: 00007fba99400000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000559d
R10: 0000000020005682 R11: 0000000000000293 R12: 0000000000000003
R13: 00007fbaa4435f80 R14: 00007fbaa4435f40 R15: 00007fba99400000
 </TASK>
rcu: rcu_preempt kthread starved for 10571 jiffies! g47617 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:25232 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 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
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.10.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
RIP: 0010:kvm_wait+0x2ac/0x2c0 arch/x86/kernel/kvm.c:1060
Code: a0 48 89 df e8 e5 89 bb 00 eb 96 e8 7e 8d 45 0a f3 0f 1e fa e8 75 dd 55 00 f4 e9 04 fe ff ff f3 0f 1e fa e8 66 dd 55 00 fb f4 <e9> f4 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90
RSP: 0018:ffffc90000007620 EFLAGS: 00000246
RAX: ffffffff8140482a RBX: ffffffff8eeba0c0 RCX: ffffffff8e094680
RDX: 0000000080000102 RSI: ffffffff8bcabb60 RDI: ffffffff8c1feb40
RBP: ffffc900000076f0 R08: ffffffff92fa75ef R09: 1ffffffff25f4ebd
R10: dffffc0000000000 R11: fffffbfff25f4ebe R12: 1ffff92000000ec8
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba9a3ff000 CR3: 000000007aef6000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pv_wait arch/x86/include/asm/paravirt.h:596 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline]
 __pv_queued_spin_lock_slowpath+0x8d0/0xdc0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 mac80211_hwsim_tx_frame_no_nl+0x97f/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1808
 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2206
 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2306
 __iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:772
 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2336
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1768
 handle_softirqs+0x2c6/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
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:72 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:113
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 d4 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 95 6c a3 00 f3 0f 1e fa fb f4 <fa> e9 d4 33 2a 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246
RAX: ffffffff8e094680 RBX: ffff8880182ed064 RCX: 00000000000f38e1
RDX: 0000000000000001 RSI: ffff8880182ed000 RDI: ffff8880182ed064
RBP: 000000000003a578 R08: ffff8880b9437ccb R09: 1ffff11017286f99
R10: dffffc0000000000 R11: ffffffff8b8608e0 R12: ffff888018354000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eacdd00
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x114/0x480 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x375/0x5d0 kernel/sched/idle.c:332
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
 rest_init+0x2dc/0x300 init/main.c:747
 start_kernel+0x47a/0x500 init/main.c:1103
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
 x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
 common_startup_64+0x13e/0x147
 </TASK>