rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P10181/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=46237, q=573 ncpus=2)
task:syz.5.1622      state:R  running task     stack:24512 pid:10181 tgid:10179 ppid:6544   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7528
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x760 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:queue_work_on+0x162/0x1d0 kernel/workqueue.c:2449
Code: 00 4d 85 ed 75 16 e8 5d 19 38 00 eb 15 e8 56 19 38 00 e8 81 9d 9f 09 4d 85 ed 74 ea e8 47 19 38 00 fb 65 48 8b 05 0e f8 e5 10 <48> 3b 44 24 18 75 56 89 d8 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90010657348 EFLAGS: 00000283
RAX: e27e89376b59f400 RBX: ffff88803632ac01 RCX: 0000000000080000
RDX: ffffc9001c8c7000 RSI: 0000000000011f25 RDI: 0000000000011f26
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f17d7f R12: 0000000000000000
R13: 0000000000000200 R14: 0000000000000000 R15: 001fffffffc00001
 queue_work include/linux/workqueue.h:698 [inline]
 xlog_cil_push_now fs/xfs/xfs_log_cil.c:1749 [inline]
 xlog_cil_force_seq+0x363/0x8c0 fs/xfs/xfs_log_cil.c:1927
 xlog_cil_force fs/xfs/xfs_log_priv.h:585 [inline]
 xfs_log_force+0x1ad/0x920 fs/xfs/xfs_log.c:2802
 xfs_qm_dqflush+0x987/0x1120 fs/xfs/xfs_dquot.c:1435
 xfs_qm_flush_one+0x13c/0x200 fs/xfs/xfs_qm.c:1442
 xfs_qm_dquot_walk+0x28a/0x5d0 fs/xfs/xfs_qm.c:90
 xfs_qm_quotacheck+0x3ba/0x6f0 fs/xfs/xfs_qm.c:1525
 xfs_qm_mount_quotas+0x26a/0x670 fs/xfs/xfs_qm.c:1646
 xfs_mountfs+0x1b16/0x22e0 fs/xfs/xfs_mount.c:1187
 xfs_fs_fill_super+0x11b5/0x1600 fs/xfs/xfs_super.c:1938
 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1693
 vfs_get_tree+0x92/0x2a0 fs/super.c:1753
 fc_mount fs/namespace.c:1198 [inline]
 do_new_mount_fc fs/namespace.c:3763 [inline]
 do_new_mount+0x341/0xd30 fs/namespace.c:3839
 do_mount fs/namespace.c:4172 [inline]
 __do_sys_mount fs/namespace.c:4388 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4365
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0x560 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbd7d70e0ca
RSP: 002b:00007fbd7b95de58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbd7b95dee0 RCX: 00007fbd7d70e0ca
RDX: 0000200000009740 RSI: 0000200000009780 RDI: 00007fbd7b95dea0
RBP: 0000200000009740 R08: 00007fbd7b95dee0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000009780
R13: 00007fbd7b95dea0 R14: 0000000000009793 R15: 00002000000000c0
 </TASK>
rcu: rcu_preempt kthread starved for 8888 jiffies! g46237 f0x0 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:27736 pid:18    tgid:18    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5402 [inline]
 __schedule+0x16f9/0x5500 kernel/sched/core.c:7204
 __schedule_loop kernel/sched/core.c:7283 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7298
 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x312/0x11b0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 6b 61 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 93 8f 1c 00 fb f4 <e9> 0c cb 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8dc07dc0 EFLAGS: 00000246
RAX: 00000000001949eb RBX: ffffffff8199d71a RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8d63c144 RDI: ffffffff8ba9cd80
RBP: ffffffff8dc07eb0 R08: ffff8880b8633d5b R09: 1ffff110170c67ab
R10: dffffc0000000000 R11: ffffed10170c67ac R12: 0000000000000000
R13: 1ffffffff1b9fde8 R14: 0000000000000000 R15: 1ffffffff1b9fde8
FS:  0000000000000000(0000) GS:ffff888125eec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdebe102010 CR3: 00000000405ae000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/kernel/process.c:766 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x36a/0x5f0 kernel/sched/idle.c:352
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:451
 rest_init+0x2de/0x300 init/main.c:717
 start_kernel+0x38a/0x3e0 init/main.c:1175
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157
 </TASK>