watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz-executor.1:15571] Modules linked in: irq event stamp: 288380 hardirqs last enabled at (288379): [] kvm_wait+0x23b/0x2c0 hardirqs last disabled at (288380): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (288360): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (288360): [] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 softirqs last disabled at (288315): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (288315): [] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 CPU: 1 PID: 15571 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] RIP: 0010:kvm_wait+0x250/0x2c0 arch/x86/kernel/kvm.c:1059 Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 0a 09 55 00 e8 25 38 5c 00 45 38 f7 75 15 66 90 e8 79 08 55 00 0f 00 2d a2 47 68 0a fb f4 50 fe ff ff e8 66 08 55 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc9000baefb20 EFLAGS: 000002d3 RAX: ffffffff813fe7f7 RBX: ffff88801d058fb8 RCX: ffff888065979e00 RDX: 0000000000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec6e0 RBP: ffffc9000baefbf0 R08: ffffffff92cc753f R09: 1ffffffff2598ea7 R10: dffffc0000000000 R11: fffffbfff2598ea8 R12: 1ffff9200175df68 R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 0000555584574480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f951432d270 CR3: 0000000068be6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:596 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6ff/0xc60 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:351 [inline] lock_for_kill+0xdc/0x210 fs/dcache.c:653 dput+0x18a/0x2b0 fs/dcache.c:843 __fput+0x678/0x8a0 fs/file_table.c:431 __do_sys_close fs/open.c:1557 [inline] __se_sys_close fs/open.c:1542 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1542 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fd020c7cd5a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffd32808e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007fd020c7cd5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fd020dad980 R08: 0000001b30920000 R09: 000000000000057f R10: 0000000081408e2e R11: 0000000000000293 R12: 0000000000055d61 R13: ffffffffffffffff R14: 00007fd020800000 R15: 0000000000055a20 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 15579 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:asm_sysvec_irq_work+0x4/0x20 arch/x86/include/asm/idtentry.h:738 Code: e9 51 05 00 00 90 f3 0f 1e fa 0f 01 ca fc 6a ff e8 01 04 00 00 48 89 c4 48 89 e7 e8 76 a2 ef ff e9 31 05 00 00 90 f3 0f 1e fa <0f> 01 ca fc 6a ff e8 e1 03 00 00 48 89 c4 48 89 e7 e8 b6 a8 ef ff RSP: 0018:ffffc90000007e18 EFLAGS: 00000086 RAX: 13eb5165c055c500 RBX: 0000000000000200 RCX: ffffffff81720c2a RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec6e0 RBP: ffffc90000007f50 R08: ffffffff92cc753f R09: 1ffffffff2598ea7 R10: dffffc0000000000 R11: fffffbfff2598ea8 R12: ffff88801e985a00 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8de0a0c0 FS: 0000555567bc8480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32221000 CR3: 0000000069f64000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: RIP: 0010:variable_ffs arch/x86/include/asm/bitops.h:321 [inline] RIP: 0010:__do_softirq+0x1db/0x943 kernel/softirq.c:542 Code: 89 7c 24 70 0f b7 db 48 c7 c7 20 bb a9 8b e8 6c 26 f5 ff 65 66 c7 05 2a e3 88 74 00 00 e8 8d 34 21 f6 fb 49 c7 c7 c0 a0 e0 8d <89> 5c 24 34 b8 ff ff ff ff 0f bc 44 24 34 41 89 c4 41 ff c4 0f 84 RSP: 0018:ffffc90000007e40 EFLAGS: 00000286