rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=44bc/1/0x4000000000000000 softirq=29322/29322 fqs=0
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P2448/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=40589, q=249 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9335 Comm: syz-executor.1 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:lock_acquire+0x26/0x550 kernel/locking/lockdep.c:5722
Code: 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 20 01 00 00 4c 89 4c 24 28 4c 89 44 24 38 <48> 89 4c 24 30 89 54 24 1c 41 89 f6 48 89 7c 24 20 65 48 8b 04 25
RSP: 0018:ffffc900000078e0 EFLAGS: 00000082
RAX: ab6cd9ab0b281c00 RBX: ffffffff84b856c0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff8ea36d80
RBP: ffffc90000007a28 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000007c60 R11: fffff52000000f8e R12: 0000000000000000
R13: 1ffff92000000f5c R14: dffffc0000000000 R15: ffff88807b0d5340
FS: 00007f908d3ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f908d3ffd58 CR3: 0000000061888000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
debug_objects_fill_pool+0x9f/0x9b0 lib/debugobjects.c:614
debug_object_activate+0x135/0x510 lib/debugobjects.c:704
debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
debug_activate kernel/time/hrtimer.c:478 [inline]
enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1090
__run_hrtimer kernel/time/hrtimer.c:1709 [inline]
__hrtimer_run_queues+0x6d5/0xd50 kernel/time/hrtimer.c:1756
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 de b4 6a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 53 e4 d4 f5 65 8b 05 a4 db 72 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000332f8a0 EFLAGS: 00000206
RAX: ab6cd9ab0b281c00 RBX: 1ffff92000665f18 RCX: ffffffff94773703
RDX: dffffc0000000000 RSI: ffffffff8bcab360 RDI: 0000000000000001
RBP: ffffc9000332f938 R08: ffffffff8fabdf2f R09: 1ffffffff1f57be5
R10: dffffc0000000000 R11: fffffbfff1f57be6 R12: dffffc0000000000
R13: 1ffff92000665f14 R14: ffffc9000332f8c0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
timerfd_clock_was_set+0x1e0/0x2f0 fs/timerfd.c:113
clock_was_set+0x7b0/0x830 kernel/time/hrtimer.c:983
timekeeping_inject_offset+0x4e8/0x580 kernel/time/timekeeping.c:1398
do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2447
do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
__do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
__se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
__x64_sys_clock_adjtime+0x1e1/0x290 kernel/time/posix-timers.c:1162
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f908d87dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f908d3ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f908d9ac1f0 RCX: 00007f908d87dea9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f908d8ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f908d9ac1f0 R15: 00007ffc5d5e7598
task:kworker/u8:8 state:R running task stack:18192 pid:2448 tgid:2448 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
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_release+0x5a/0x9f0 kernel/locking/lockdep.c:5762
Code: 24 e0 00 00 00 49 bf 00 00 00 00 00 fc ff df 48 c7 44 24 60 b3 8a b5 41 48 c7 44 24 68 87 3c b4 8d 48 c7 44 24 70 40 d8 72 81 <4c> 8d 64 24 60 49 c1 ec 03 48 b8 f1 f1 f1 f1 04 f2 00 f2 4b 89 04
RSP: 0018:ffffc9000a23fa20 EFLAGS: 00000282
RAX: 71cc7eb9139b3800 RBX: ffffffff8b50e29b RCX: ffff888029a41e00
RDX: 0000000000000000 RSI: ffffffff8b50e29b RDI: ffffffff8e333b60
RBP: ffffc9000a23fb48 R08: ffffffff8b50e3ce R09: 1ffffffff25ef6b4
R10: dffffc0000000000 R11: fffffbfff25ef6b5 R12: ffff888079214ca0
R13: ffffffff8b50e29b R14: ffff88801eb8b4c0 R15: dffffc0000000000
rcu_lock_release include/linux/rcupdate.h:339 [inline]
rcu_read_unlock include/linux/rcupdate.h:872 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x28b/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3218 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299
worker_thread+0x86d/0xd70 kernel/workqueue.c:3380
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: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g40589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=17408
rcu: rcu_preempt kthread starved for 10502 jiffies! g40589 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:25232 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2030
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2232
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