rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=69e4/1/0x4000000000000000 softirq=11939/11940 fqs=181
	(detected by 1, t=10502 jiffies, g=12673, q=2671 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4933 Comm: syz.1.212 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__lock_acquire+0x5a00/0x7c50 kernel/locking/lockdep.c:5076
Code: 00 00 00 00 49 b8 00 00 00 00 00 fc ff df 48 c7 84 24 20 01 00 00 0e 36 e0 45 48 8b 84 24 f0 00 00 00 42 c7 04 00 00 00 00 00 <4a> c7 44 00 0b 00 00 00 00 42 c7 44 00 17 00 00 00 00 42 c6 44 00
RSP: 0018:ffffc900000078c0 EFLAGS: 00000083
RAX: 1ffff92000000f3c RBX: ffff888075562898 RCX: ffffffff81630300
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff908b8360
RBP: ffffc90000007b10 R08: dffffc0000000000 R09: fffffbfff211706d
R10: fffffbfff211706d R11: 1ffffffff211706c R12: ffffffff904b72f8
R13: 0000000000000908 R14: abff74431f7c3f5e R15: ffff888075562890
FS:  00007f0ac3ac56c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3ce60f CR3: 0000000023e99000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 advance_sched+0x47/0x970 net/sched/sch_taprio.c:700
 __run_hrtimer kernel/time/hrtimer.c:1752 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1816
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1878
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 ce 97 6d f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> c6 13 3e f7 65 8b 05 97 d4 e8 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc900032c71a0 EFLAGS: 00000206
RAX: a1841766efc19600 RBX: 0000000000000a06 RCX: a1841766efc19600
RDX: dffffc0000000000 RSI: ffffffff8a6bffe0 RDI: 0000000000000001
RBP: ffffc900032c7228 R08: dffffc0000000000 R09: fffffbfff2117067
R10: fffffbfff2117067 R11: 1ffffffff2117066 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888024d78aa0 R15: 1ffff92000658e34
 block_dirty_folio+0x190/0x2b0 fs/buffer.c:640
 hfsplus_bnode_write+0xec/0x1f0 fs/hfsplus/bnode.c:90
 hfsplus_bnode_write_u16+0x88/0xc0 fs/hfsplus/bnode.c:104
 hfsplus_brec_insert+0x51e/0xcc0 fs/hfsplus/brec.c:111
 hfsplus_create_cat+0x3b0/0x1020 fs/hfsplus/catalog.c:292
 hfsplus_fill_super+0x12f6/0x1b90 fs/hfsplus/super.c:560
 mount_bdev+0x287/0x3c0 fs/super.c:1443
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3054
 do_mount fs/namespace.c:3397 [inline]
 __do_sys_mount fs/namespace.c:3605 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0ac2b900ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 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:00007f0ac3ac4e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0ac3ac4ef0 RCX: 00007f0ac2b900ca
RDX: 0000200000003000 RSI: 0000200000000240 RDI: 00007f0ac3ac4eb0
RBP: 0000200000003000 R08: 00007f0ac3ac4ef0 R09: 0000000000208000
R10: 0000000000208000 R11: 0000000000000246 R12: 0000200000000240
R13: 00007f0ac3ac4eb0 R14: 000000000000069e R15: 0000200000000480
 </TASK>
rcu: rcu_preempt kthread starved for 10137 jiffies! g12673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27920 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 4974 Comm: syz.2.224 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:csd_lock_wait kernel/smp.c:424 [inline]
RIP: 0010:smp_call_function_many_cond+0xe7b/0x1270 kernel/smp.c:998
Code: 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 6d e9 0a 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 07 e8 f9 e5 0a 00 eb 37 f3 90 <41> 0f b6 04 1c 84 c0 75 10 41 f7 07 01 00 00 00 74 1e e8 de e5 0a
RSP: 0018:ffffc90003357540 EFLAGS: 00000246
RAX: ffffffff8175f092 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9000c999000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900033576a0 R08: dffffc0000000000 R09: fffffbfff2117067
R10: fffffbfff2117067 R11: 1ffffffff2117066 R12: 1ffff110171c85ad
R13: ffff8880b8f3bb40 R14: 0000000000000000 R15: ffff8880b8e42d68
FS:  00007fc86e1e36c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc86d371d60 CR3: 0000000028e9c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1166
 kill_bdev block/bdev.c:75 [inline]
 set_blocksize+0x2cd/0x350 block/bdev.c:152
 sb_set_blocksize block/bdev.c:161 [inline]
 sb_min_blocksize+0xbc/0x180 block/bdev.c:177
 hfsplus_read_wrapper+0xc5/0xfd0 fs/hfsplus/wrapper.c:170
 hfsplus_fill_super+0x37a/0x1b90 fs/hfsplus/super.c:413
 mount_bdev+0x287/0x3c0 fs/super.c:1443
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3054
 do_mount fs/namespace.c:3397 [inline]
 __do_sys_mount fs/namespace.c:3605 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc86d3900ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 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:00007fc86e1e2e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc86e1e2ef0 RCX: 00007fc86d3900ca
RDX: 0000200000000040 RSI: 0000200000000180 RDI: 00007fc86e1e2eb0
RBP: 0000200000000040 R08: 00007fc86e1e2ef0 R09: 0000000002010410
R10: 0000000002010410 R11: 0000000000000246 R12: 0000200000000180
R13: 00007fc86e1e2eb0 R14: 0000000000000684 R15: 0000200000000000
 </TASK>
vkms_vblank_simulate: vblank timer overrun