watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.4.1425:10333] Modules linked in: irq event stamp: 147666 hardirqs last enabled at (147665): [] kvm_wait+0x23b/0x2c0 hardirqs last disabled at (147666): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (147654): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (147654): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (147654): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (147635): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (147635): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (147635): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 10333 Comm: syz.4.1425 Not tainted 6.11.0-rc4-syzkaller-gb408473ea01b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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:1060 Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 9a 14 53 00 e8 85 78 5a 00 45 38 f7 75 15 66 90 e8 09 14 53 00 0f 00 2d 82 ba c7 0a fb f4 50 fe ff ff e8 f6 13 53 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38 RSP: 0018:ffffc90003617700 EFLAGS: 000002d3 RAX: ffffffff81407737 RBX: ffff8880231054a0 RCX: ffff88806a091e00 RDX: 0000000000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c608ac0 RBP: ffffc900036177d0 R08: ffffffff941e087f R09: 1ffffffff283c10f R10: dffffc0000000000 R11: fffffbfff283c110 R12: 1ffff920006c2ee4 R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003 FS: 00007fc482e1a6c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc482e19f98 CR3: 00000000352f0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0100000000000000 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: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:1888 alloc_path_pseudo fs/file_table.c:334 [inline] alloc_file_pseudo+0x19e/0x290 fs/file_table.c:346 __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 bpf_prog_load+0x1917/0x20f0 kernel/bpf/syscall.c:2938 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5710 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815 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: 0033:0x7fc481f79eb9 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:00007fc482e1a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fc482115f80 RCX: 00007fc481f79eb9 RDX: 0000000000000090 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007fc481fe793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fc482115f80 R15: 00007fffbd778398 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 10328 Comm: syz.2.1424 Not tainted 6.11.0-rc4-syzkaller-gb408473ea01b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:check_preemption_disabled+0x2/0x120 lib/smp_processor_id.c:13 Code: 8a 60 8c 48 c7 c6 a0 8a 60 8c eb 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 RSP: 0018:ffffc90000a18ad0 EFLAGS: 00000002 RAX: 0000000000000100 RBX: 0000000000000001 RCX: ffff888051361e00 RDX: ffff888051361e00 RSI: ffffffff8c608aa0 RDI: ffffffff8c608a60 RBP: ffffc90000a18bf0 R08: ffffffff819e8099 R09: 0000000000000000 R10: ffffc90000a18b80 R11: ffffffffa0000950 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88807c0f7ea8 R15: 0000000000000000 FS: 0000555590831500(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020cc9000 CR3: 000000007f020000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:726 rcu_read_unlock include/linux/rcupdate.h:867 [inline] trace_call_bpf+0x512/0x8a0 kernel/trace/bpf_trace.c:149 perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10304 perf_trace_preemptirq_template+0x2d2/0x3f0 include/trace/events/preemptirq.h:14 trace_irq_enable+0xf1/0x120 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56 irqentry_exit+0x63/0x90 kernel/entry/common.c:357 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+0x1df/0x970 kernel/softirq.c:542 Code: 89 7c 24 70 0f b7 db 48 c7 c7 60 ca 09 8c e8 58 d7 61 0a 65 66 c7 05 16 75 ac 7e 00 00 e8 99 8d 43 00 fb 49 c7 c4 c0 a0 60 8e ff ff ff ff 0f bc c3 41 89 c7 41 ff c7 0f 84 e6 03 00 00 89 5c RSP: 0018:ffffc90000a18e40 EFLAGS: 00000286 RAX: 78d190baa06dda00 RBX: 0000000000000200 RCX: ffffffff8170417a RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c608ac0 RBP: ffffc90000a18f50 R08: ffffffff941e087f R09: 1ffffffff283c10f R10: dffffc0000000000 R11: fffffbfff283c110 R12: ffffffff8e60a0c0 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001431dc __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 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:692 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 f9 37 89 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:ffffc900036b7c20 EFLAGS: 00000206 RAX: 78d190baa06dda00 RBX: 1ffff920006d6f8c RCX: ffffffff8170417a RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c608ac0 RBP: ffffc900036b7d00 R08: ffffffff941e087f R09: 1ffffffff283c10f R10: dffffc0000000000 R11: fffffbfff283c110 R12: 0000000000000000 R13: ffff888051362260 R14: ffffc900036b7c60 R15: 1ffff920006d6f88 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:436 dput+0x197/0x2b0 fs/dcache.c:851 __fput+0x5f8/0x8a0 fs/file_table.c:430 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb72fd79eb9 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:00007ffe819d12e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 000000000005635b RCX: 00007fb72fd79eb9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fb72ff17a80 R08: 0000000000000001 R09: 00007ffe819d15df R10: 00007fb72fc00000 R11: 0000000000000246 R12: 000000000005640b R13: 00007ffe819d13f0 R14: 0000000000000032 R15: ffffffffffffffff