watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.275:6916] Modules linked in: irq event stamp: 494044 hardirqs last enabled at (494043): [<ffffffff8140a71b>] kvm_wait+0x23b/0x2c0 hardirqs last disabled at (494044): [<ffffffff8bc8438e>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (494028): [<ffffffff81579654>] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (494028): [<ffffffff81579654>] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (494028): [<ffffffff81579654>] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (494007): [<ffffffff81579654>] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (494007): [<ffffffff81579654>] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (494007): [<ffffffff81579654>] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 1 UID: 0 PID: 6916 Comm: syz.2.275 Not tainted 6.12.0-rc7-syzkaller-g2c8b09ac2537 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline] RIP: 0010:kvm_wait+0x250/0x2c0 arch/x86/kernel/kvm.c:1064 Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 8a 3d 54 00 e8 e5 03 5c 00 45 38 f7 75 15 66 90 e8 f9 3c 54 00 0f 00 2d f2 8f c7 0a fb f4 <e9> 50 fe ff ff e8 e6 3c 54 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc90002ff7880 EFLAGS: 000002d3 RAX: ffffffff8140a727 RBX: ffff88802344cf98 RCX: ffff88807a0a1e00 RDX: 0000000000000000 RSI: ffffffff8c0acda0 RDI: ffffffff8c6114e0 RBP: ffffc90002ff7950 R08: ffffffff942d583f R09: 1ffffffff285ab07 R10: dffffc0000000000 R11: fffffbfff285ab08 R12: 1ffff920005fef14 R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 00007fb86b2336c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000003269a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> </IRQ> <TASK> pv_wait arch/x86/include/asm/paravirt.h:596 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline] __pv_queued_spin_lock_slowpath+0x8d0/0xdb0 kernel/locking/qspinlock.c:508 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] d_instantiate+0x64/0xa0 fs/dcache.c:1893 alloc_path_pseudo fs/file_table.c:341 [inline] alloc_file_pseudo+0x19e/0x290 fs/file_table.c:353 __anon_inode_getfile fs/anon_inodes.c:109 [inline] __anon_inode_getfd fs/anon_inodes.c:234 [inline] anon_inode_getfd+0xce/0x1e0 fs/anon_inodes.c:269 map_create+0xe1f/0x11c0 kernel/bpf/syscall.c:1505 __sys_bpf+0x6d1/0x810 kernel/bpf/syscall.c:5741 __do_sys_bpf kernel/bpf/syscall.c:5866 [inline] __se_sys_bpf kernel/bpf/syscall.c:5864 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5864 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: 0033:0x7fb86a37e759 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:00007fb86b233038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fb86a535f80 RCX: 00007fb86a37e759 RDX: 0000000000000048 RSI: 0000000020000140 RDI: 2000000000000000 RBP: 00007fb86a3f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb86a535f80 R15: 00007ffc9c728f08 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6924 Comm: syz.1.279 Not tainted 6.12.0-rc7-syzkaller-g2c8b09ac2537 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:raw_atomic_cmpxchg include/linux/atomic/atomic-arch-fallback.h:2018 [inline] RIP: 0010:atomic_cmpxchg include/linux/atomic/atomic-instrumented.h:1196 [inline] RIP: 0010:irq_work_single+0x14e/0x240 kernel/irq_work.c:228 Code: e8 87 ca 5b 00 4d 8b 5c 24 10 4c 89 e7 41 ff d3 66 90 83 e5 fc 4c 89 f7 be 04 00 00 00 e8 0a cd 5b 00 44 89 f8 f0 41 0f b1 2e <48> c7 c0 f0 15 1d 90 48 c1 e8 03 42 80 3c 28 00 74 0c 48 c7 c7 f0 RSP: 0018:ffffc90000007c48 EFLAGS: 00000046 RAX: 0000000000000022 RBX: ffff8880b863fab0 RCX: ffffffff81a3a996 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff8880b863fab8 RBP: 0000000000000020 R08: ffff8880b863fabb R09: 1ffff110170c7f57 R10: dffffc0000000000 R11: ffffed10170c7f58 R12: ffff8880b863fab0 R13: dffffc0000000000 R14: ffff8880b863fab8 R15: 0000000000000022 FS: 00007f09db63a6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3055ffff CR3: 000000007a21e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <NMI> </NMI> <IRQ> irq_work_run_list kernel/irq_work.c:252 [inline] irq_work_run+0x18b/0x350 kernel/irq_work.c:261 __sysvec_irq_work+0xb8/0x430 arch/x86/kernel/irq_work.c:22 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x4f/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:handle_softirqs+0x1e3/0x980 kernel/softirq.c:542 Code: 7c 24 70 45 0f b7 e4 48 c7 c7 40 c3 09 8c e8 84 ea 70 0a 65 66 c7 05 d2 4b ac 7e 00 00 e8 a5 1e 45 00 fb 49 c7 c6 c0 a0 60 8e <b8> ff ff ff ff 41 0f bc c4 41 89 c7 41 ff c7 0f 84 eb 03 00 00 44 RSP: 0018:ffffc90000007e40 EFLAGS: 00000286 RAX: 5754c913a342eb00 RBX: ffffc90000007ee0 RCX: ffffffff8170c9ba RDX: dffffc0000000000 RSI: ffffffff8c0acda0 RDI: ffffffff8c6114e0 RBP: ffffc90000007f50 R08: ffffffff942d583f R09: 1ffffffff285ab07 R10: dffffc0000000000 R11: fffffbfff285ab08 R12: 0000000000000200 R13: 0000000000000000 R14: ffffffff8e60a0c0 R15: 1ffff1100b07d3c0 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 </IRQ> <TASK> asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:rcu_read_unlock_special+0x88/0x570 kernel/rcu/tree_plugin.h:693 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 49 22 88 7e 41 f7 c7 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22 RSP: 0018:ffffc900020afd20 EFLAGS: 00000206 RAX: 5754c913a342eb00 RBX: 1ffff92000415fac RCX: ffffffff8170c9ba RDX: dffffc0000000000 RSI: ffffffff8c0acda0 RDI: ffffffff8c6114e0 RBP: ffffc900020afdf0 R08: ffffffff942d583f R09: 1ffffffff285ab07 R10: dffffc0000000000 R11: fffffbfff285ab08 R12: 1ffff92000415fa8 R13: ffff8880583ea260 R14: ffffc900020afd60 R15: 0000000000000000 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437 dput+0x197/0x2b0 fs/dcache.c:856 __fput+0x5d2/0x880 fs/file_table.c:439 __do_sys_close fs/open.c:1567 [inline] __se_sys_close fs/open.c:1552 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1552 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: 0033:0x7f09da77e759 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:00007f09db63a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f09da935f80 RCX: 00007f09da77e759 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f09da7f175e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f09da935f80 R15: 00007fff6ec60748 </TASK>