GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10503 jiffies, g=157761, q=945 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295035792-4295025289), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10503 jiffies! g157761 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27536 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_timeout+0x158/0x2c0
 rcu_gp_fqs_loop+0x312/0x11d0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 29372 Comm: syz.8.9512 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:rcu_is_watching+0x44/0xb0
Code: 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 90 47 26 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 6c 38 86 00 <48> c7 c3 d8 39 3a 93 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38
RSP: 0018:ffffc90000007d08 EFLAGS: 00000046
RAX: 1ffffffff1c4c8f2 RBX: 0000000000000000 RCX: 0000000080010003
RDX: 0000000000000000 RSI: ffffffff8c28b5c0 RDI: ffffffff8c28b580
RBP: ffffffff81b276fa R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff206165f R12: 0000000000000000
R13: ffff888121028298 R14: ffffffff8e264790 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f775e236ff8 CR3: 000000000e74a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x5f/0x350
 _raw_spin_lock_irq+0x3d/0x50
 __hrtimer_run_queues+0x46a/0xa20
 hrtimer_interrupt+0x44b/0x950
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 dd 72 f7 f5 f7 c3 00 02 00 00 74 05 e8 40 fe 22 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 24 f5 e8 f5 65 8b 05 ad 2e 8e 07 85 c0 74 18 5b 41 5e e9 51 48
RSP: 0018:ffffc90006a97048 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000282 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8dfa5361 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9030b2f7 R09: 1ffffffff206165e
R10: dffffc0000000000 R11: fffffbfff206165f R12: ffff8881ad712000
R13: ffff8881ad711000 R14: ffffffff9a66fa08 R15: 0000000000000001
 debug_check_no_obj_freed+0x52e/0x550
 free_unref_folios+0x556/0x1420
 folios_put_refs+0xa3d/0xb80
 shmem_undo_range+0x52c/0x1660
 shmem_evict_inode+0x289/0xae0
 evict+0x61e/0xb10
 __dentry_kill+0x1a2/0x690
 finish_dput+0xc9/0x480
 __fput+0x691/0xa60
 task_work_run+0x1d9/0x270
 do_exit+0x70f/0x22c0
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f526df9cdd9
Code: Unable to access opcode bytes at 0x7f526df9cdaf.
RSP: 002b:00007f526ee86028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: 000000000000000b RBX: 00007f526e215fa0 RCX: 00007f526df9cdd9
RDX: 0000000000000651 RSI: 0000200000000000 RDI: 0000000000000007
RBP: 00007f526e032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f526e216038 R14: 00007f526e215fa0 R15: 00007ffe38bc0878
 </TASK>
hpet: Lost 16 RTC interrupts
