rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11709/1:b..l P11731/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=94897, q=969 ncpus=2)
task:kworker/u8:5 state:R running task stack:25552 pid:11731 tgid:11731 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_mcast_mla_update
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:batadv_mcast_mla_forw_flags_get net/batman-adv/multicast.c:253 [inline]
RIP: 0010:batadv_mcast_mla_flags_get net/batman-adv/multicast.c:290 [inline]
RIP: 0010:__batadv_mcast_mla_update net/batman-adv/multicast.c:910 [inline]
RIP: 0010:batadv_mcast_mla_update+0x6f0/0x4030 net/batman-adv/multicast.c:949
Code: 45 20 e5 4c 8b 25 f0 15 f2 0e 49 39 dc 0f 84 71 01 00 00 49 c7 c6 80 b0 74 9a 49 8d 5c 24 10 48 89 d8 48 c1 e8 03 0f b6 04 08 <84> c0 0f 85 13 01 00 00 0f b6 1b bf 03 00 00 00 89 de e8 e9 f4 10
RSP: 0018:ffffc90004ac79c0 EFLAGS: 00000212
RAX: 0000000000000000 RBX: ffff8880631c9010 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: ffffc90004ac7bb0 R08: ffffffff8b829ac7 R09: 1ffffffff283c908
R10: dffffc0000000000 R11: fffffbfff283c909 R12: ffff8880631c9000
R13: ffff88806052c118 R14: ffffffff9a74b080 R15: ffff88806f687678
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
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:modprobe state:R running task stack:23680 pid:11709 tgid:11709 ppid:1283 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
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:debug_lockdep_rcu_enabled+0x21/0x40 kernel/rcu/update.c:321
Code: 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d af ce 5e 04 00 74 1e 83 3d 16 00 5f 04 00 74 15 65 48 8b 0c 25 00 d7 03 00 <31> c0 83 b9 dc 0a 00 00 00 0f 94 c0 e9 79 9f 36 00 66 2e 0f 1f 84
RSP: 0018:ffffc90003faf578 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888033df9e00
RDX: 0000000000000000 RSI: 00007fef5a43ba90 RDI: ffffffffa0003e40
RBP: 0000000000000000 R08: ffffffff81a23e8f R09: 1ffffffff283c908
R10: dffffc0000000000 R11: fffffbfff283c909 R12: ffffffffa0003e40
R13: dffffc0000000000 R14: 0000000000000000 R15: 00007fef5a43ba90
rcu_read_unlock include/linux/rcupdate.h:867 [inline]
is_bpf_text_address+0x1e9/0x2a0 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+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 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:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
remove_vma mm/mmap.c:187 [inline]
exit_mmap+0x645/0xc80 mm/mmap.c:3436
__mmput+0x115/0x390 kernel/fork.c:1345
exit_mm+0x220/0x310 kernel/exit.c:571
do_exit+0x9b2/0x27f0 kernel/exit.c:869
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
__do_sys_exit_group kernel/exit.c:1042 [inline]
__se_sys_exit_group kernel/exit.c:1040 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1040
x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
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: 0033:0x7fef5a43ba90
RSP: 002b:00007fffc7318b28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fef5a52c860 RCX: 00007fef5a43ba90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fef5a52c860 R08: 00007fffc73189a0 R09: 00007fffc7318a80
R10: 00007fffc73189e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fef5a530658 R15: 0000000000000001
rcu: rcu_preempt kthread starved for 10522 jiffies! g94897 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:25552 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.11.0-rc6-syzkaller-00026-g88fac17500f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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 d7 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 85 71 b0 00 f3 0f 1e fa fb f4 e9 c4 6f 36 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e607ca8 EFLAGS: 00000246
RAX: ffffffff8e694680 RBX: ffff88801e2b6864 RCX: 000000000062f8a9
RDX: 0000000000000001 RSI: ffff88801e2b6800 RDI: ffff88801e2b6864
RBP: 000000000003a678 R08: ffff8880b8837c7b R09: 1ffff11017106f8f
R10: dffffc0000000000 R11: ffffffff8bb9ccf0 R12: ffff8880203d3800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f0e4120
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555e223808 CR3: 000000005aa9c000 CR4: 0000000000350ef0
Call Trace:
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
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: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+0x47a/0x500 init/main.c:1103
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