rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 ticks this GP) idle=8e9c/1/0x4000000000000000 softirq=149829/149829 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P31068/1:b..l P5855/1:b..l P31055/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=248381, q=261 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 31075 Comm: syz.0.9208 Not tainted 6.10.0-rc6-syzkaller-00048-g73e931504f8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3763 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3782 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3837 [inline]
RIP: 0010:__lock_acquire+0x1572/0x3b30 kernel/locking/lockdep.c:5137
Code: e5 20 f2 14 94 48 8d 43 f8 48 85 db 48 0f 45 d8 eb 04 48 83 eb 08 48 85 db 74 40 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 bc 18 00 00 48 8b 43 18 49 39 c5 0f 84 a2 f7 ff ff 48 8d 7b
RSP: 0018:ffffc90000007ae8 EFLAGS: 00000046
RAX: 1ffffffff2629f13 RBX: ffffffff9314f880 RCX: ffffffff816ae74e
RDX: 1ffffffff2846536 RSI: 0000000000000008 RDI: ffffffff9314f898
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff284ce58
R10: ffffffff942672c7 R11: 0000000000000001 R12: 000000000001c6f2
R13: 2f566e4e45871fd7 R14: ffff8880601f2908 R15: 0000000000000002
FS: 00007f423c15b6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33408ff8 CR3: 000000006f8da000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__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_deactivate+0x13c/0x370 lib/debugobjects.c:763
debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
debug_deactivate kernel/time/hrtimer.c:484 [inline]
__run_hrtimer kernel/time/hrtimer.c:1657 [inline]
__hrtimer_run_queues+0x47d/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__schedule+0xf1d/0x5d00 kernel/sched/core.c:6616
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 2f 42 00 00 48 8b bd 10 ff ff ff 4d 89 6f 10 4c 89 ee e8 db f0 16 f6 48 89 c7 e8 03 f0 74 f6 <48> 8b 8d a0 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 01 c1 48 c7
RSP: 0018:ffffc900038aeec0 EFLAGS: 00000206
RAX: 0000000000002769 RBX: ffff8880601f1e00 RCX: 1ffffffff1fc7fd1
RDX: 0000000000000000 RSI: ffffffff8b2caf00 RDI: ffffffff8b8ff600
RBP: ffffc900038af050 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8fe44117 R11: 0000000000000001 R12: ffff8880b923f6c8
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880b923ebc0
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
unwind_next_frame+0x1c90/0x23a0 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__set_page_owner+0x8b/0x560 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
prep_new_page mm/page_alloc.c:1481 [inline]
get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
__alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
__kmalloc_large_node+0x7f/0x1a0 mm/slub.c:4068
kmalloc_large_noprof+0x1c/0x70 mm/slub.c:4085
kmalloc_noprof include/linux/slab.h:657 [inline]
kzalloc_noprof include/linux/slab.h:778 [inline]
bpf_check+0x10f/0xa210 kernel/bpf/verifier.c:21567
bpf_prog_load+0xedb/0x2660 kernel/bpf/syscall.c:2908
__sys_bpf+0x8e9/0x49a0 kernel/bpf/syscall.c:5688
__do_sys_bpf kernel/bpf/syscall.c:5795 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5793 [inline]
__x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5793
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: 0033:0x7f423b375b99
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:00007f423c15b048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f423b504078 RCX: 00007f423b375b99
RDX: 0000000000000090 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f423b3f677e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f423b504078 R15: 00007ffddf377318
task:syz.4.9204 state:R running task stack:26512 pid:31055 tgid:31055 ppid:28881 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1676 [inline]
zap_pmd_range mm/memory.c:1724 [inline]
zap_pud_range mm/memory.c:1753 [inline]
zap_p4d_range mm/memory.c:1774 [inline]
unmap_page_range+0xbc7/0x3f20 mm/memory.c:1795
unmap_single_vma+0x194/0x2b0 mm/memory.c:1841
unmap_vmas+0x22f/0x490 mm/memory.c:1885
exit_mmap+0x1b8/0xb20 mm/mmap.c:3341
__mmput+0x12a/0x4d0 kernel/fork.c:1346
mmput+0x62/0x70 kernel/fork.c:1368
exit_mm kernel/exit.c:565 [inline]
do_exit+0x9b7/0x2ba0 kernel/exit.c:861
do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
get_signal+0x2616/0x2710 kernel/signal.c:2909
arch_do_signal_or_restart+0x90/0x7e0 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+0x14a/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe35df75b99
RSP: 002b:00007fff5766e628 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 0000000000240081 RCX: 00007fe35df75b99
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe35e103fac
RBP: 000000000023f497 R08: 00007fe35ec56080 R09: 000000015766e93f
R10: 00007fff5766e710 R11: 0000000000000246 R12: 00007fe35e103fac
R13: 0000000000000bea R14: 00007fff5766e730 R15: 00007fff5766e710
task:kworker/u8:19 state:R running task stack:22512 pid:5855 tgid:5855 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5722
Code: c1 05 9a ad 96 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 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: 0000:ffffc900040afaa0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000815f56 RCX: 000000009bbd8e8a
RDX: 0000000000000001 RSI: ffffffff8b2cb200 RDI: ffffffff8b8ff600
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff284ce58
R10: ffffffff942672c7 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8dbb1620 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x16e/0x10f0 net/batman-adv/network-coding.c:719
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3248
process_scheduled_works kernel/workqueue.c:3329 [inline]
worker_thread+0x6c8/0xf30 kernel/workqueue.c:3409
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
task:syz.2.9206 state:R running task stack:27776 pid:31068 tgid:31060 ppid:27554 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1676 [inline]
zap_pmd_range mm/memory.c:1724 [inline]
zap_pud_range mm/memory.c:1753 [inline]
zap_p4d_range mm/memory.c:1774 [inline]
unmap_page_range+0xbc7/0x3f20 mm/memory.c:1795
unmap_single_vma+0x194/0x2b0 mm/memory.c:1841
unmap_vmas+0x22f/0x490 mm/memory.c:1885
exit_mmap+0x1b8/0xb20 mm/mmap.c:3341
__mmput+0x12a/0x4d0 kernel/fork.c:1346
mmput+0x62/0x70 kernel/fork.c:1368
exit_mm kernel/exit.c:565 [inline]
do_exit+0x9b7/0x2ba0 kernel/exit.c:861
do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
get_signal+0x2616/0x2710 kernel/signal.c:2909
arch_do_signal_or_restart+0x90/0x7e0 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+0x14a/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9f99175b99
RSP: 002b:00007f9f99ebc0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f9f99304158 RCX: 00007f9f99175b99
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f9f99304158
RBP: 00007f9f99304150 R08: 00007f9f99ebc6c0 R09: 00007f9f99ebc6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9f9930415c
R13: 000000000000006e R14: 00007ffecefc0af0 R15: 00007ffecefc0bd8
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g248381 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=203398
rcu: rcu_preempt kthread starved for 10502 jiffies! g248381 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27584 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
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