rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=47cc/1/0x4000000000000000 softirq=23296/23297 fqs=1
rcu: 	(detected by 0, t=10506 jiffies, g=33197, q=146 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8697 Comm: syz.1.963 Not tainted 6.10.0-rc5-syzkaller-00175-g6d6444ba8205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:advance_sched+0x42c/0xca0 net/sched/sch_taprio.c:951
Code: 88 6c f8 48 8b 04 24 48 8b 98 28 01 00 00 48 8d a8 30 01 00 00 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 ef e8 ea 87 6c f8 48 03 5d 00 49 89 1e eb 05 e8 7c d2
RSP: 0018:ffffc90000a18c90 EFLAGS: 00000046
RAX: 1ffff1100225e826 RBX: 17e23d68ac000000 RCX: dffffc0000000000
RDX: 0000000080010002 RSI: 0000000000000000 RDI: 17e23d68ac000000
RBP: ffff8880112f4130 R08: ffffffff898f5620 R09: fffff52000143180
R10: dffffc0000000000 R11: fffff52000143180 R12: 0000000000000001
R13: 17e23d68ac000000 R14: ffff8880112f4128 R15: ffff888063a2d340
FS:  00007f203a9be6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31a10ff8 CR3: 00000000734ba000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x3f0 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3000
Code: ff ff e8 76 d1 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 68 d1 1f 00 e8 d3 9d 0f 0a 4d 85 f6 74 b6 e8 59 d1 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31
RSP: 0018:ffffc9001478f3c0 EFLAGS: 00000246
RAX: 1ffff920028f1ec4 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc900096b9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9001478f570 R08: ffffffff81765884 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: ffffffff8eb22278
R13: ffffffff8eb22220 R14: 0000000000000200 R15: dffffc0000000000
 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063
 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345
 _printk+0xd5/0x120 kernel/printk/printk.c:2370
 reiserfs_info+0x113/0x160 fs/reiserfs/prints.c:303
 reiserfs_fill_super+0xf90/0x2620
 mount_bdev+0x20c/0x2d0 fs/super.c:1659
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
 vfs_get_tree+0x92/0x2a0 fs/super.c:1780
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 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: 0033:0x7f2039b7722a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f203a9bde78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f203a9bdf00 RCX: 00007f2039b7722a
RDX: 0000000020000540 RSI: 0000000020000140 RDI: 00007f203a9bdec0
RBP: 0000000020000540 R08: 00007f203a9bdf00 R09: 0000000000000010
R10: 0000000000000010 R11: 0000000000000206 R12: 0000000020000140
R13: 00007f203a9bdec0 R14: 0000000000001119 R15: 00000000200001c0
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g33197 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:25168 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 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/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 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: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 1054 Comm: kworker/u8:7 Not tainted 6.10.0-rc5-syzkaller-00175-g6d6444ba8205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:srso_alias_safe_ret+0x0/0x7 arch/x86/lib/retpoline.S:171
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <48> 8d 64 24 08 c3 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc
RSP: 0018:ffffc900041376f0 EFLAGS: 00000293
RAX: ffffffff818a21e8 RBX: 1ffff110172a8899 RCX: ffff888021f19e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900041378e0 R08: ffffffff818a21b7 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: dffffc0000000000
R13: ffff8880b95444c8 R14: ffff8880b943f8c0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000206c0000 CR3: 000000000e132000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 srso_alias_return_thunk+0x5/0xfbef5 arch/x86/lib/retpoline.S:181
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_many_cond+0x1878/0x29d0 kernel/smp.c:855
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2069 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2279
 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329
 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
 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>
watchdog: BUG: soft lockup - CPU#0 stuck for 226s! [kworker/u8:7:1054]
Modules linked in:
irq event stamp: 10387152
hardirqs last  enabled at (10387151): [<ffffffff8b860663>] irqentry_exit+0x63/0x90 kernel/entry/common.c:357
hardirqs last disabled at (10387152): [<ffffffff8b85e22e>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043
softirqs last  enabled at (10386906): [<ffffffff815a0c04>] __do_softirq kernel/softirq.c:588 [inline]
softirqs last  enabled at (10386906): [<ffffffff815a0c04>] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last  enabled at (10386906): [<ffffffff815a0c04>] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
softirqs last disabled at (10386855): [<ffffffff815a0c04>] __do_softirq kernel/softirq.c:588 [inline]
softirqs last disabled at (10386855): [<ffffffff815a0c04>] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last disabled at (10386855): [<ffffffff815a0c04>] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
CPU: 0 PID: 1054 Comm: kworker/u8:7 Not tainted 6.10.0-rc5-syzkaller-00175-g6d6444ba8205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1860/0x29d0 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 c9 0c 0c 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 74 08 0c 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 58 08
RSP: 0018:ffffc90004137700 EFLAGS: 00000293
RAX: ffffffff818a21e8 RBX: 1ffff110172a8899 RCX: ffff888021f19e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900041378e0 R08: ffffffff818a21b7 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: dffffc0000000000
R13: ffff8880b95444c8 R14: ffff8880b943f8c0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000206c0000 CR3: 000000000e132000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2069 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2279
 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:826
 process_one_work kernel/workqueue.c:3248 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3329
 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
 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>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8697 Comm: syz.1.963 Not tainted 6.10.0-rc5-syzkaller-00175-g6d6444ba8205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline]
RIP: 0010:do_raw_spin_unlock+0x45/0x8b0 kernel/locking/spinlock_debug.c:141
Code: 00 fc ff df 48 8d 57 04 48 89 d0 48 c1 e8 03 48 89 44 24 10 0f b6 04 18 84 c0 48 89 14 24 0f 85 34 04 00 00 81 3a ad 4e ad de <0f> 85 05 01 00 00 4c 89 ff be 04 00 00 00 e8 a8 11 88 00 4c 89 f8
RSP: 0018:ffffc90000a18c60 EFLAGS: 00000046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc90000a18c03
RDX: ffff8880b952c884 RSI: ffffffff8bcaccc0 RDI: ffff8880b952c880
RBP: ffffc90000a18d50 R08: ffffffff8fad506f R09: 1ffffffff1f5aa0d
R10: dffffc0000000000 R11: fffffbfff1f5aa0e R12: dffffc0000000000
R13: 1ffff92000143198 R14: ffffc90000a18ce0 R15: ffff8880b952c880
FS:  00007f203a9be6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31a10ff8 CR3: 00000000734ba000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock_irqrestore+0x81/0x140 kernel/locking/spinlock.c:194
 __run_hrtimer kernel/time/hrtimer.c:1683 [inline]
 __hrtimer_run_queues+0x477/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x3f0 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3000
Code: ff ff e8 76 d1 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 68 d1 1f 00 e8 d3 9d 0f 0a 4d 85 f6 74 b6 e8 59 d1 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31
RSP: 0018:ffffc9001478f3c0 EFLAGS: 00000246
RAX: 1ffff920028f1ec4 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc900096b9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9001478f570 R08: ffffffff81765884 R09: 1ffffffff25f50b0
R10: dffffc0000000000 R11: fffffbfff25f50b1 R12: ffffffff8eb22278
R13: ffffffff8eb22220 R14: 0000000000000200 R15: dffffc0000000000
 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063
 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345
 _printk+0xd5/0x120 kernel/printk/printk.c:2370
 reiserfs_info+0x113/0x160 fs/reiserfs/prints.c:303
 reiserfs_fill_super+0xf90/0x2620
 mount_bdev+0x20c/0x2d0 fs/super.c:1659
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
 vfs_get_tree+0x92/0x2a0 fs/super.c:1780
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 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: 0033:0x7f2039b7722a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f203a9bde78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f203a9bdf00 RCX: 00007f2039b7722a
RDX: 0000000020000540 RSI: 0000000020000140 RDI: 00007f203a9bdec0
RBP: 0000000020000540 R08: 00007f203a9bdf00 R09: 0000000000000010
R10: 0000000000000010 R11: 0000000000000206 R12: 0000000020000140
R13: 00007f203a9bdec0 R14: 0000000000001119 R15: 00000000200001c0
 </TASK>