sched: DL replenish lagged too much watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.0.57:6161] Modules linked in: irq event stamp: 47027165 hardirqs last enabled at (47027164): [] note_gp_changes+0x237/0x300 kernel/rcu/tree.c:1326 hardirqs last disabled at (47027165): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (47027156): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (47027156): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (47027156): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (47027159): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (47027159): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (47027159): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6161 Comm: syz.0.57 Not tainted 6.16.0-rc3-syzkaller-g6e5cae9ddae7 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:note_gp_changes+0x25f/0x300 kernel/rcu/tree.c:1334 Code: 1f 00 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 f6 44 24 41 02 75 4f 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <4a> c7 04 2b 00 00 00 00 66 42 c7 44 2b 09 00 00 42 c6 44 2b 0b 00 RSP: 0018:ffffc90000a08b00 EFLAGS: 00000206 RAX: dce08ee39b2a6100 RBX: 1ffff92000141164 RCX: dce08ee39b2a6100 RDX: 0000000000000002 RSI: ffffffff8d999032 RDI: ffffffff8be2a240 RBP: ffffc90000a08bd0 R08: ffffffff8fa1f1f7 R09: 1ffffffff1f43e3e R10: dffffc0000000000 R11: fffffbfff1f43e3f R12: ffff8880b873afd4 R13: dffffc0000000000 R14: 0000000000000a02 R15: ffff8880b873afc0 FS: 000055558babd500(0000) GS:ffff888125d19000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c35be63 CR3: 0000000032348000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_check_quiescent_state kernel/rcu/tree.c:2460 [inline] rcu_core+0x29d/0x1710 kernel/rcu/tree.c:2816 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:rcu_read_unlock_special+0x87/0x4c0 kernel/rcu/tree_plugin.h:694 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 a2 95 f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc9000b63fc20 EFLAGS: 00000206 RAX: dce08ee39b2a6100 RBX: 1ffff920016c7f8c RCX: dce08ee39b2a6100 RDX: 0000000000000006 RSI: ffffffff8d999032 RDI: ffffffff8be2a240 RBP: ffffc9000b63fd10 R08: ffffffff8fa1f1f7 R09: 1ffffffff1f43e3e R10: dffffc0000000000 R11: fffffbfff1f43e3f R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8e1442e0 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438 dput+0x197/0x2b0 fs/dcache.c:910 __fput+0x68e/0xa70 fs/file_table.c:473 task_work_run+0x1d1/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f11f9f8e929 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:00007ffeea4f9d58 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f11fa1b7ba0 RCX: 00007f11f9f8e929 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f11fa1b7ba0 R08: 0000000000000088 R09: 00000007ea4fa04f R10: 00007f11fa1b7ac0 R11: 0000000000000246 R12: 0000000000016663 R13: 00007ffeea4f9e50 R14: ffffffffffffffff R15: 00007ffeea4f9e70 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6162 Comm: syz.4.58 Not tainted 6.16.0-rc3-syzkaller-g6e5cae9ddae7 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82 Code: 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 e3 25 18 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000b15fa18 EFLAGS: 000002d3 RAX: ffffffff8171fd7d RBX: 0000000000000003 RCX: ffff88802aa68000 RDX: 0000000000000000 RSI: ffffffff8d999032 RDI: ffffffff8be2a240 RBP: ffffc9000b15faf0 R08: ffffffff8fa1f1f7 R09: 1ffffffff1f43e3e R10: dffffc0000000000 R11: fffffbfff1f43e3f R12: dffffc0000000000 R13: 0000000000000200 R14: 0000000000000003 R15: 1ffff9200162bf48 FS: 0000555555981500(0000) GS:ffff888125c19000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2e85bf6d58 CR3: 0000000011720000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] kvm_wait+0x232/0x290 arch/x86/kernel/kvm.c:1064 pv_wait arch/x86/include/asm/paravirt.h:569 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline] __pv_queued_spin_lock_slowpath+0x7bf/0xb60 kernel/locking/qspinlock.c:325 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline] queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x21f/0x290 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:351 [inline] lock_for_kill+0xdc/0x210 fs/dcache.c:719 dput+0x18a/0x2b0 fs/dcache.c:909 __fput+0x68e/0xa70 fs/file_table.c:473 task_work_run+0x1d1/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9947b8e929 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:00007ffe7dab70e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f9947db7ba0 RCX: 00007f9947b8e929 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f9947db7ba0 R08: 0000000000000220 R09: 0000001e7dab73df R10: 00007f9947db7ac0 R11: 0000000000000246 R12: 000000000001665c R13: 00007f9947db5fa0 R14: ffffffffffffffff R15: 00007ffe7dab7200