rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1):
P30302/1:b..l
P30658/1:b..l
P21675/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=273273, q=660 ncpus=2)
task:kworker/u8:0 state:R
running task stack:20176 pid:21675 tgid:21675 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5763
Code: 2b 00 74 08 4c 89 f7 e8 2a f3 8a 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: 0000:ffffc900096ef860 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920012ddf18 RCX: 38f8311087576800
RDX: dffffc0000000000 RSI: ffffffff8c0ae660 RDI: ffffffff8c605b80
RBP: ffffc900096ef9a8 R08: ffffffff9372a807 R09: 1ffffffff26e5500
R10: dffffc0000000000 R11: fffffbfff26e5501 R12: 1ffff920012ddf14
R13: dffffc0000000000 R14: ffffc900096ef8c0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:754 [inline]
batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:825 [inline]
batadv_iv_ogm_schedule+0x43f/0x1090 net/batman-adv/bat_iv_ogm.c:868
batadv_iv_send_outstanding_bat_ogm_packet+0x6fe/0x810 net/batman-adv/bat_iv_ogm.c:1712
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:syz-executor state:R
running task stack:24672 pid:30658 tgid:30658 ppid:5219 flags:0x00004000
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:__nr_to_section include/linux/mmzone.h:1862 [inline]
RIP: 0010:__pfn_to_section include/linux/mmzone.h:1970 [inline]
RIP: 0010:lookup_page_ext mm/page_ext.c:252 [inline]
RIP: 0010:page_ext_get+0x107/0x2a0 mm/page_ext.c:536
Code: ff ff ff 00 00 00 48 89 ef 48 89 de e8 f2 94 8d ff 48 39 eb 0f 87 91 01 00 00 48 c7 c0 20 0a f8 94 48 c1 e8 03 42 80 3c 38 00 <74> 0c 48 c7 c7 20 0a f8 94 e8 5b c9 f4 ff 48 8b 05 94 33 f2 12 48
RSP: 0018:ffffc90003717710 EFLAGS: 00000246
RAX: 1ffffffff29f0144 RBX: 00000000013bc2c0 RCX: ffff888026199e00
RDX: 0000000000000000 RSI: 00000000013bc2c0 RDI: 000000ffffffffc0
RBP: 000000ffffffffc0 R08: ffffffff8205d65e R09: 1ffffffff26e5500
R10: dffffc0000000000 R11: fffffbfff26e5501 R12: 000000000004ef0b
R13: 0000000000000001 R14: ffffffff8205d590 R15: dffffc0000000000
__set_page_owner+0x9e/0x800 mm/page_owner.c:322
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3442
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4700
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2263
vm_area_alloc_pages mm/vmalloc.c:3584 [inline]
__vmalloc_area_node mm/vmalloc.c:3660 [inline]
__vmalloc_node_range_noprof+0x971/0x1460 mm/vmalloc.c:3841
vmalloc_user_noprof+0x74/0x80 mm/vmalloc.c:3995
kcov_ioctl+0x59/0x640 kernel/kcov.c:706
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
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: 0033:0x7f8054d775fb
RSP: 002b:00007ffce0e16270 EFLAGS: 00000246
ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000040000 RCX: 00007f8054d775fb
RDX: 0000000000040000 RSI: ffffffff80086301 RDI: 00000000000000df
RBP: 00007f8054f06600 R08: 00000000000000da R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009
task:syz-executor state:R
running task stack:20768 pid:30302 tgid:30302 ppid:1 flags:0x00004006
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:preempt_count_sub+0x66/0x170 kernel/sched/core.c:5692
Code: c1 81 e1 ff ff ff 7f 39 d9 7c 27 81 fb fe 00 00 00 77 07 0f b6 c0 85 c0 74 5f 65 8b 05 bb f6 a0 7e f7 db 65 01 1d b2 f6 a0 7e <5b> 41 5e c3 cc cc cc cc 90 e8 0c e1 49 03 85 c0 74 3a 48 c7 c0 10
RSP: 0018:ffffc900047ef450 EFLAGS: 00000297
RAX: 0000000080000001 RBX: 00000000ffffffff RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffc900047ef5e0 RDI: 0000000000000001
RBP: ffffc900047ef540 R08: ffffffff81412545 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff888021739e00 R12: ffffc900047ef6c0
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffffc900047ef6c8
unwind_next_frame+0x1e65/0x2a00 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x75/0x3f0 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0xd22/0xea0 mm/page_alloc.c:2612
vfree+0x186/0x2e0 mm/vmalloc.c:3364
kcov_put kernel/kcov.c:429 [inline]
kcov_close+0x2b/0x50 kernel/kcov.c:525
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:228
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc96277643c
RSP: 002b:00007fc962a2fd90 EFLAGS: 00000246
ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 00000000ffffffff RCX: 00007fc96277643c
RDX: 0000000000000028 RSI: 00007fc962a2fe40 RDI: 00000000000000f9
RBP: 00007fc962a2fdec R08: 0000000000000000 R09: 0079746972756365
R10: 00007fc9628d37e0 R11: 0000000000000246 R12: 0000555574f58603
R13: 0000555574f58590 R14: 0000000000000005 R15: 00007fc962a2fe40
rcu: rcu_preempt kthread starved for 10640 jiffies! g273273 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:25328 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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-rc1-syzkaller-00233-g948752d2e010 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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 40 d7 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d e5 42 b4 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff888018280000 RBX: ffff8880192b5064 RCX: 00000000052d9209
RDX: 0000000000000001 RSI: ffff8880192b5000 RDI: ffff8880192b5064
RBP: 000000000003a6b8 R08: ffff8880b9337c7b R09: 1ffff11017266f8f
R10: dffffc0000000000 R11: ffffffff8bb5c790 R12: ffff888015f9d800
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f0db420
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c27bcfe CR3: 000000002c19e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x112/0x480 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
start_secondary+0x100/0x100 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147