rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6445/1:b..l P6442/1:b..l P24564/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=135873, q=163 ncpus=2)
task:kworker/u4:26 state:R running task stack:23680 pid:24564 tgid:24564 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7008
irqentry_exit+0x36/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:debug_lockdep_rcu_enabled+0x2f/0x30 kernel/rcu/update.c:322
Code: 05 da 22 99 04 85 c0 74 21 8b 05 d4 55 99 04 85 c0 74 17 65 48 8b 04 25 00 bd 03 00 8b 80 bc 0a 00 00 85 c0 0f 94 c0 0f b6 c0 66 0f 1f 00 55 53 65 8b 05 cf 36 83 75 85 c0 40 0f 95 c5 65 8b
RSP: 0018:ffffc900043c7ba8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff8880321d5040 RCX: 00000000c8357ea6
RDX: 0000000000000001 RSI: ffffffff8acca240 RDI: ffffffff8b2ed960
RBP: 0000000000000208 R08: 0000000000000000 R09: fffffbfff23e23d0
R10: ffffffff91f11e87 R11: 0000000000000002 R12: ffff888028a0ebc0
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000001
rcu_read_lock include/linux/rcupdate.h:748 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x173/0x10e0 net/batman-adv/network-coding.c:719
process_one_work+0x886/0x15d0 kernel/workqueue.c:2627
process_scheduled_works kernel/workqueue.c:2700 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2781
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
task:syz-executor.1 state:R running task stack:26704 pid:6442 tgid:6439 ppid:5097 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6865
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1115 [inline]
copy_pmd_range mm/memory.c:1176 [inline]
copy_pud_range mm/memory.c:1213 [inline]
copy_p4d_range mm/memory.c:1237 [inline]
copy_page_range+0x12c1/0x3c40 mm/memory.c:1335
dup_mmap+0x13da/0x1d90 kernel/fork.c:758
dup_mm kernel/fork.c:1691 [inline]
copy_mm kernel/fork.c:1740 [inline]
copy_process+0x43c8/0x73f0 kernel/fork.c:2502
kernel_clone+0xfd/0x930 kernel/fork.c:2907
__do_sys_clone+0xba/0x100 kernel/fork.c:3050
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f848507cce9
RSP: 002b:00007f8485d9f078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f848519bf80 RCX: 00007f848507cce9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000011
RBP: 00007f84850c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f848519bf80 R15: 00007ffd8ac18ae8
task:syz-executor.2 state:R running task stack:28064 pid:6445 tgid:6441 ppid:1223 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6865
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1115 [inline]
copy_pmd_range mm/memory.c:1176 [inline]
copy_pud_range mm/memory.c:1213 [inline]
copy_p4d_range mm/memory.c:1237 [inline]
copy_page_range+0x12c1/0x3c40 mm/memory.c:1335
dup_mmap+0x13da/0x1d90 kernel/fork.c:758
dup_mm kernel/fork.c:1691 [inline]
copy_mm kernel/fork.c:1740 [inline]
copy_process+0x43c8/0x73f0 kernel/fork.c:2502
kernel_clone+0xfd/0x930 kernel/fork.c:2907
__do_sys_clone+0xba/0x100 kernel/fork.c:3050
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f8c19c7cce9
RSP: 002b:00007f8c1a9af078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f8c19d9bf80 RCX: 00007f8c19c7cce9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000011
RBP: 00007f8c19cc947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8c19d9bf80 R15: 00007ffcd8b77a98
rcu: rcu_preempt kthread starved for 10457 jiffies! g135873 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:27856 pid:16 tgid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
schedule_timeout+0x137/0x290 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xb10 kernel/rcu/tree.c:1631
rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1830
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.7.0-rc8-syzkaller-00055-g5eff55d725a4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0x1b/0x20 drivers/acpi/processor_idle.c:113
Code: ed c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 48 8b 04 25 00 bd 03 00 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 87 90 ba 00 fb f4 c3 0f 1f 00 0f b6 47 08 3c 01 74 0b 3c 02 74 05 8b 7f 04 eb 9f
RSP: 0018:ffffc9000038fd58 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8a7f5987
RDX: 0000000000000001 RSI: ffff88814666d000 RDI: ffff88814666d064
RBP: ffff88814666d064 R08: 0000000000000001 R09: ffffed1017326dbd
R10: ffff8880b9936deb R11: 0000000000000000 R12: ffff888016761000
R13: ffffffff8db11b60 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01547f000 CR3: 00000000289f2000 CR4: 00000000003506f0
Call Trace:
acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x83/0x500 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
cpuidle_idle_call kernel/sched/idle.c:215 [inline]
do_idle+0x319/0x400 kernel/sched/idle.c:282
cpu_startup_entry+0x50/0x60 kernel/sched/idle.c:380
start_secondary+0x20e/0x2a0 arch/x86/kernel/smpboot.c:336
secondary_startup_64_no_verify+0x178/0x17b