watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz-executor.4:6725] Modules linked in: irq event stamp: 457872 hardirqs last enabled at (457871): [] kvm_wait+0x23b/0x2c0 hardirqs last disabled at (457872): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (457864): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (457864): [] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 softirqs last disabled at (457843): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (457843): [] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 CPU: 1 PID: 6725 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-05243-g14bb1e8c8d4a #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 ea 08 55 00 e8 05 38 5c 00 45 38 f7 75 15 66 90 e8 59 08 55 00 0f 00 2d a2 47 68 0a fb f4 50 fe ff ff e8 46 08 55 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc9000515fb20 EFLAGS: 000002d3 RAX: ffffffff813fe7f7 RBX: ffff88801d0cd4c8 RCX: ffff88802886da00 RDX: 0000000000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec660 RBP: ffffc9000515fbf0 R08: ffffffff92cc753f R09: 1ffffffff2598ea7 R10: dffffc0000000000 R11: fffffbfff2598ea8 R12: 1ffff92000a2bf68 R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 000055556a6b1480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000249ee000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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: 0033:0x7f53f507cd5a 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:00007ffd1666a090 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f53f507cd5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f53f51ad980 R08: 0000001b31120000 R09: 00000000000000f9 R10: 000000008140abcb R11: 0000000000000293 R12: 000000000001b085 R13: ffffffffffffffff R14: 00007f53f4c00000 R15: 000000000001ad44 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6717 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-05243-g14bb1e8c8d4a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:check_preemption_disabled+0x42/0x120 lib/smp_processor_id.c:55 Code: 08 65 8b 1d bc ad 93 74 65 8b 05 b1 ad 93 74 a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 <89> d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24 RSP: 0018:ffffc90000007c68 EFLAGS: 00000046 RAX: ccf608fd39756d00 RBX: 0000000000000000 RCX: ffff8880217a3c00 RDX: 0000000000010102 RSI: ffffffff8bfec640 RDI: ffffffff8bfec600 RBP: ffff8880217a3c00 R08: ffffffff8133a290 R09: 1ffffffff1f0d5cd R10: dffffc0000000000 R11: fffffbfff1f0d5ce R12: ffff8880b94288a8 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000555562ffa480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30c2a000 CR3: 000000002d2de000 CR4: 00000000003506f0 DR0: 6956940000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: irqtime_account_irq+0x6d/0x1e0 kernel/sched/cputime.c:63 account_hardirq_exit include/linux/vtime.h:159 [inline] __irq_exit_rcu+0xba/0x1c0 kernel/softirq.c:630 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x54/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 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 d3 88 74 00 00 e8 6d 24 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 RAX: ccf608fd39756d00 RBX: 0000000000000200 RCX: ffffffff81720c0a RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec660 RBP: ffffc90000007f50 R08: ffffffff92cc753f R09: 1ffffffff2598ea7 R10: dffffc0000000000 R11: fffffbfff2598ea8 R12: ffff8880217a3c00 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff8de0a0c0 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 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+0x88/0x550 kernel/rcu/tree_plugin.h:682 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 09 94 87 7e 41 f7 c4 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc900050b7d00 EFLAGS: 00000206 RAX: ccf608fd39756d00 RBX: 1ffff92000a16fa8 RCX: ffffffff81720c0a RDX: dffffc0000000000 RSI: ffffffff8baac220 RDI: ffffffff8bfec660 RBP: ffffc900050b7de0 R08: ffffffff92cc753f R09: 1ffffffff2598ea7 R10: dffffc0000000000 R11: fffffbfff2598ea8 R12: 0000000000000000 R13: ffff8880217a4058 R14: ffffc900050b7d40 R15: 1ffff92000a16fa4 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:426 rcu_read_unlock+0x85/0xa0 include/linux/rcupdate.h:782 dput+0x197/0x2b0 fs/dcache.c:844 __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: 0033:0x7f0c39a7cd5a 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:00007ffe693ccce0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f0c39a7cd5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f0c39bad980 R08: 0000001b31020000 R09: 0000000000000bfa R10: 000000008b64bc7c R11: 0000000000000293 R12: 000000000001afe1 R13: ffffffffffffffff R14: 00007f0c39600000 R15: 000000000001aca0