rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P71/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=41973, q=257 ncpus=2)
task:kworker/u8:4 state:R running task stack:22224 pid:71 tgid:71 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_mcast_mla_update
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7078
irqentry_exit+0x36/0x90 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+0x515/0x3200 net/batman-adv/multicast.c:949
Code: 9a 0f 84 00 01 00 00 e8 19 77 a3 f6 49 8d 7d 10 48 89 f8 48 c1 e8 03 0f b6 04 18 84 c0 74 06 0f 8e 33 29 00 00 45 0f b6 75 10 03 00 00 00 44 89 f6 e8 ce 78 a3 f6 41 80 fe 03 75 a3 e8 e3 76
RSP: 0018:ffffc9000214fb28 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8af68c92
RDX: ffff88801cfb8000 RSI: ffffffff8af68c67 RDI: ffff88805c0cc010
RBP: ffffed10062991b1 R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: ffffffff8af68bbf R12: 0000000000000000
R13: ffff88805c0cc000 R14: 0000000000000000 R15: ffff8880314c9730
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g41973 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=32020
rcu: rcu_preempt kthread starved for 10502 jiffies! g41973 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28352 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12122 Comm: syz.4.1633 Not tainted 6.13.0-rc2-syzkaller-00292-ga446e965a188 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4851 [inline]
RIP: 0010:__lock_acquire+0x469/0x3c40 kernel/locking/lockdep.c:5176
Code: 89 ff 0f b6 a8 c4 00 00 00 e8 e3 54 ff ff 48 ba 00 00 00 00 00 fc ff df 48 8d b8 c5 00 00 00 48 89 f9 48 c1 e9 03 0f b6 14 11 <48> 89 f9 83 e1 07 38 ca 7f 08 84 d2 0f 85 4c 2a 00 00 40 84 ed 0f
RSP: 0018:ffffc90000a18ab0 EFLAGS: 00000803
RAX: ffffffff96e4f0e0 RBX: 0000000000080000 RCX: 1ffffffff2dc9e34
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff96e4f1a5
RBP: 0000000000000002 R08: 0000000000000000 R09: fffffbfff2dc9d98
R10: ffffffff96e4ecc7 R11: 0000000000000001 R12: 0000000000000002
R13: ffff888078628000 R14: 0000000000000000 R15: ffff888078628b30
FS: 00007f98a8ccf6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000240 CR3: 0000000041aa6000 CR4: 00000000003526f0
Call Trace:
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
debug_object_activate+0x149/0x4a0 lib/debugobjects.c:818
debug_hrtimer_activate kernel/time/hrtimer.c:428 [inline]
debug_activate kernel/time/hrtimer.c:469 [inline]
enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1076
__run_hrtimer kernel/time/hrtimer.c:1756 [inline]
__hrtimer_run_queues+0x903/0xae0 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5243
Code: a9 0a 00 00 44 8b 0d 43 7f f6 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 19 e7 38 00 fb 65 48 8b 1d f0 0a 9b 7e <48> 8d bb f8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900174df858 EFLAGS: 00000202
RAX: 0000000000001423 RBX: ffff888078628000 RCX: 1ffffffff20bdaf9
RDX: 0000000000000000 RSI: ffffffff8b6cd860 RDI: ffffffff8bd1d3e0
RBP: ffffc900174df8a0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff905f1a17 R11: 0000000000000001 R12: ffff8880b873f9e0
R13: ffff888025e54880 R14: 0000000000000000 R15: ffff8880b863ebc0
context_switch kernel/sched/core.c:5372 [inline]
__schedule+0xe60/0x5ad0 kernel/sched/core.c:6756
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7078
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5814
Code: b8 ff ff ff ff 65 0f c1 05 d0 d1 8b 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
RSP: 0018:ffffc900174dfb28 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 1ffff92002e9bf66 RCX: 00000000d439196c
RDX: 0000000000000001 RSI: ffffffff8b6cdb60 RDI: ffffffff8bd1d3e0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2dc9d98
R10: ffffffff96e4ecc7 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8e1bb500 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
current_objcg_update+0x1ac/0x400 mm/memcontrol.c:2529
current_obj_cgroup mm/memcontrol.c:2556 [inline]
__memcg_slab_post_alloc_hook+0x6ee/0x9b0 mm/memcontrol.c:2971
memcg_slab_post_alloc_hook mm/slub.c:2152 [inline]
slab_post_alloc_hook mm/slub.c:4129 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
kmem_cache_alloc_lru_noprof+0x363/0x3d0 mm/slub.c:4187
sock_alloc_inode+0x25/0x1c0 net/socket.c:307
alloc_inode+0x5d/0x230 fs/inode.c:336
sock_alloc+0x40/0x280 net/socket.c:615
__sock_create+0xc1/0x8d0 net/socket.c:1522
sock_create net/socket.c:1616 [inline]
__sys_socket_create net/socket.c:1653 [inline]
__sys_socket+0x14f/0x260 net/socket.c:1700
__do_sys_socket net/socket.c:1714 [inline]
__se_sys_socket net/socket.c:1712 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1712
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f98a7f85d19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f98a8ccf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f98a8175fa0 RCX: 00007f98a7f85d19
RDX: 0000000000000300 RSI: 0000000000000002 RDI: 0000000000000011
RBP: 00007f98a8001a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f98a8175fa0 R15: 00007ffc2f3c1688
vkms_vblank_simulate: vblank timer overrun