GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=600c/1/0x4000000000000000 softirq=22691/22691 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P36/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=20557, q=434 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7771 Comm: syz.1.931 Not tainted 6.11.0-syzkaller-10547-g684a64bf32b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:debug_object_deactivate+0x15d/0x390 lib/debugobjects.c:765
Code: 48 0f af c8 48 c1 e9 2f 83 e1 f8 48 8d 9c c9 c0 80 58 9a 48 8d bc c9 c8 80 58 9a 48 89 7c 24 10 e8 08 f1 0b 07 48 89 44 24 08 <48> 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 cd 54 3c fd
RSP: 0018:ffffc90000a18c40 EFLAGS: 00000046
RAX: 0000000000000046 RBX: ffffffff9a669db0 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000a18b20
RBP: ffffc90000a18d30 R08: 0000000000000003 R09: fffff52000143164
R10: dffffc0000000000 R11: fffff52000143164 R12: ffffc90000a18c80
R13: ffff888025ebb340 R14: dffffc0000000000 R15: 1ffff9200014318c
FS:  00007fcb105236c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2b3215 CR3: 000000002892a000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1659 [inline]
 __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037
 </IRQ>
 <TASK>
 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 fe 5f 30 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 03 02 95 f5 65 8b 05 24 d5 35 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900209578c0 EFLAGS: 00000206
RAX: 11d04035b6bb1200 RBX: 1ffff9200412af1c RCX: ffffffff9a3bf903
RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: 0000000000000001
RBP: ffffc90020957958 R08: ffffffff901ce56f R09: 1ffffffff2039cad
R10: dffffc0000000000 R11: fffffbfff2039cae R12: dffffc0000000000
R13: 1ffff9200412af18 R14: ffffc900209578e0 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 timerfd_clock_was_set+0x1e0/0x2f0 fs/timerfd.c:113
 clock_was_set+0x78e/0x810 kernel/time/hrtimer.c:978
 timekeeping_inject_offset+0x4e8/0x580 kernel/time/timekeeping.c:1524
 do_adjtimex+0x51d/0xae0 kernel/time/timekeeping.c:2575
 do_clock_adjtime kernel/time/posix-timers.c:1174 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1186 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1177 [inline]
 __x64_sys_clock_adjtime+0x1e3/0x290 kernel/time/posix-timers.c:1177
 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: 0033:0x7fcb0f77def9
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:00007fcb10523038 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007fcb0f936058 RCX: 00007fcb0f77def9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fcb0f7f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcb0f936058 R15: 00007ffdfe806fc8
 </TASK>
task:kworker/u8:3    state:R  running task     stack:22360 pid:36    tgid:36    ppid:2      flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x1895/0x4b30 kernel/sched/core.c:6675
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6997
 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:rcu_is_watching+0x0/0xb0 kernel/rcu/tree.c:733
Code: c7 e0 d6 93 8e e8 40 92 79 03 eb cd 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 53 65 ff 05 08 45 89 7e e8 fb cf 49 0a 89
RSP: 0018:ffffc90000ac7b50 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88802fec92c0 RCX: ffff88801dadbc00
RDX: ffff88801dadbc00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff888025cb47d0 R08: ffffffff8b8e18f1 R09: 1ffffffff284d0f8
R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: ffff88802da14cc0
R13: 00000000000000fa R14: 0000000000000001 R15: dffffc0000000000
 rcu_read_lock include/linux/rcupdate.h:850 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
 batadv_nc_worker+0x10b/0x610 net/batman-adv/network-coding.c:719
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g20557 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=10563
rcu: rcu_preempt kthread starved for 10502 jiffies! g20557 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:24912 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0x1895/0x4b30 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6767
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>