rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P15491/1:b..l
(detected by 0, t=10502 jiffies, g=140849, q=83 ncpus=2)
task:kworker/u4:22 state:R running task stack:24824 pid:15491 ppid: 2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6494
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6806
irqentry_exit+0x31/0x80 kernel/entry/common.c:428
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: d1 a3 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900059cfb98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000b39f75 RCX: 107c7982be6cf6e6
RDX: 1ffff11004394d7e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff908e1947
R10: fffffbfff211c328 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf86900 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:280 [inline]
rcu_read_lock include/linux/rcupdate.h:706 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g140849 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=69462
rcu: rcu_preempt kthread starved for 10502 jiffies! g140849 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:28472 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0xadf/0x52b0 kernel/sched/core.c:6494
schedule+0xda/0x1b0 kernel/sched/core.c:6570
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1657
rcu_gp_kthread+0x236/0x360 kernel/rcu/tree.c:1854
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3629 Comm: syz-executor.2 Not tainted 6.0.0-rc7-syzkaller-00081-gc3e0e1e23c70 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4727 [inline]
RIP: 0010:__lock_acquire+0x423/0x56d0 kernel/locking/lockdep.c:5003
Code: 6c 6d 00 48 c1 e5 06 48 81 c5 60 1d 8e 90 48 8d bd b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 06 0f 8e 5e 11 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffffc900003f8b68 EFLAGS: 00000802
RAX: 0000000000000000 RBX: ffff888070b32a78 RCX: ffffffff815e4019
RDX: 1ffffffff213116b RSI: 0000000000000008 RDI: ffffffff90988b58
RBP: ffffffff90988aa0 R08: 0000000000000000 R09: ffffffff908e1aff
R10: fffffbfff211c35f R11: 0000000000000000 R12: ffff888070b32a78
R13: ffff888070b32000 R14: ffff888021900b00 R15: 0000000000044000
FS: 00005555560d9400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f98e42e53be CR3: 0000000054d73000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5666 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
advance_sched+0x53/0x9a0 net/sched/sch_taprio.c:717
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x5fa/0xe40 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:rcu_is_watching+0x0/0xb0 kernel/rcu/tree.c:714
Code: b6 60 61 00 eb b6 0f 1f 40 00 48 c7 c7 00 21 ee 89 e8 94 9e 1a 08 65 8a 05 d9 34 9e 7e 0f be c0 c3 66 0f 1f 84 00 00 00 00 00 <55> 53 65 ff 05 d7 f3 9c 7e e8 52 9e 1a 08 48 c7 c3 48 4c 03 00 83
RSP: 0018:ffffc90003387690 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00007fdbb563c654 RCX: 1ffffffff1bbc250
RDX: 0000000000000000 RSI: ffffffff8100748c RDI: 0000000000000007
RBP: 00007fdbb563c654 R08: 0000000000000000 R09: ffffffffff600000
R10: 00007fdbb563c000 R11: 000000000008c07c R12: ffffc90003387790
R13: 0000000000000000 R14: ffff888070b32000 R15: ffff88802055ca00
kernel_text_address kernel/extable.c:113 [inline]
kernel_text_address+0x25/0x60 kernel/extable.c:94
__kernel_text_address+0x9/0x30 kernel/extable.c:79
unwind_get_return_address arch/x86/kernel/unwind_orc.c:323 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:318
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:437 [inline]
__kasan_slab_alloc+0x85/0xb0 mm/kasan/common.c:470
kasan_slab_alloc include/linux/kasan.h:224 [inline]
slab_post_alloc_hook mm/slab.h:727 [inline]
slab_alloc mm/slab.c:3294 [inline]
__kmem_cache_alloc_lru mm/slab.c:3471 [inline]
kmem_cache_alloc+0x214/0x520 mm/slab.c:3491
kmem_cache_zalloc include/linux/slab.h:723 [inline]
__alloc_file+0x21/0x270 fs/file_table.c:138
alloc_empty_file+0x6d/0x170 fs/file_table.c:187
path_openat+0xe7/0x28f0 fs/namei.c:3677
do_filp_open+0x1b6/0x400 fs/namei.c:3718
do_sys_openat2+0x16d/0x4c0 fs/open.c:1313
do_sys_open fs/open.c:1329 [inline]
__do_sys_openat fs/open.c:1345 [inline]
__se_sys_openat fs/open.c:1340 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1340
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdbb563c654
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007ffd7c0e0ca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffd7c0e0da0 RCX: 00007fdbb563c654
RDX: 0000000000000002 RSI: 00007ffd7c0e0de0 RDI: 00000000ffffff9c
RBP: 00007ffd7c0e0de0 R08: 0000000000000000 R09: 00007ffd7c0e0bb0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00000000001aaca3 R14: 0000000000000003 R15: 00007ffd7c0e0de0