kthread+0x34b/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.4:23455]
Modules linked in:
CPU: 1 PID: 23455 Comm: syz-executor.4 Tainted: G        W         5.10.209-syzkaller-00002-g4e1bc8d8e8ae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline]
RIP: 0010:smp_call_function_single+0x27d/0x510 kernel/smp.c:517
Code: 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 ba f0 0a 00 41 83 e5 01 75 0a e8 ff ec 0a 00 e9 eb 00 00 00 f3 90 42 0f b6 04 23 <84> c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd 00 00 00 e8 dc ec 0a
RSP: 0018:ffffc900011e7880 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff9200023cf19 RCX: 0000000000040000
RDX: ffffc90002907000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900011e7970 R08: ffffffff815fbae6 R09: ffffed103ee0aec9
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffc900011e78c8 R15: 0000000000000000
FS:  00007f728dc426c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000124f72000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 smp_call_function_many_cond+0x94e/0xa30 kernel/smp.c:653
 smp_call_function_many kernel/smp.c:716 [inline]
 smp_call_function kernel/smp.c:738 [inline]
 on_each_cpu+0xa8/0x1a0 kernel/smp.c:837
 text_poke_sync arch/x86/kernel/alternative.c:1313 [inline]
 text_poke_bp_batch+0x1d4/0x600 arch/x86/kernel/alternative.c:1504
 text_poke_flush arch/x86/kernel/alternative.c:1672 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1679
 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:126
 __jump_label_update+0x36a/0x380 kernel/jump_label.c:459
 jump_label_update+0x379/0x400 kernel/jump_label.c:825
 static_key_slow_inc_cpuslocked+0x138/0x230 kernel/jump_label.c:144
 static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:159
 preempt_notifier_inc+0x10/0x20 kernel/sched/core.c:3647
 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:866 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4077 [inline]
 kvm_dev_ioctl+0xf0e/0x16a0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4129
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0x114/0x190 fs/ioctl.c:739
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:739
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f728eecee69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f728dc420c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f728effcf80 RCX: 00007f728eecee69
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006
RBP: 00007f728ef1b47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f728effcf80 R15: 00007ffd9e7cd088
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 23464 Comm: syz-executor.1 Tainted: G        W         5.10.209-syzkaller-00002-g4e1bc8d8e8ae #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:66 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:112 [inline]
RIP: 0010:kvm_wait+0xec/0x150 arch/x86/kernel/kvm.c:921
Code: 03 42 0f b6 04 20 84 c0 75 6a 41 0f b6 45 00 44 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 55 4c d5 03 f4 <eb> 0e 0f 1f 44 00 00 0f 00 2d 46 4c d5 03 fb f4 4c 89 7c 24 18 ff
RSP: 0000:ffffc90000d56f20 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff920001aade8 RCX: ffffffff8150b554
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90000d56f60
RBP: ffffc90000d56fd0 R08: dffffc0000000000 R09: ffffed10208fed21
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881047f6900 R14: 0000000000000003 R15: 0000000000000046
FS:  00007fa7e4bd66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011345c000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock_flags include/linux/spinlock.h:195 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irqsave+0x1a0/0x210 kernel/locking/spinlock.c:159
 force_sig_info_to_task+0x67/0x320 kernel/signal.c:1320
 force_sig_fault_to_task kernel/signal.c:1684 [inline]
 force_sig_fault+0x125/0x1c0 kernel/signal.c:1691
 no_context+0x2e1/0xf20 arch/x86/mm/fault.c:672
 __bad_area_nosemaphore+0xcd/0x440 arch/x86/mm/fault.c:848
 bad_area_nosemaphore+0x2d/0x40 arch/x86/mm/fault.c:855
 handle_page_fault arch/x86/mm/fault.c:1462 [inline]
 exc_page_fault+0x3ea/0x5b0 arch/x86/mm/fault.c:1518
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:72 [inline]
RIP: 0010:strncpy_from_user+0x2b1/0x2d0 lib/strncpy_from_user.c:139
Code: 41 5f 5d c3 e8 a0 fb fb fe 45 31 f6 eb e4 e8 96 fb fb fe 49 c7 c6 f2 ff ff ff eb d6 e8 88 fb fb fe 49 c7 c6 f2 ff ff ff eb c8 <e8> 7a fb fb fe eb a9 e8 73 fb fb fe 4d 29 f5 4c 8b 7d d0 e9 28 ff
RSP: 0000:ffffc90000d57620 EFLAGS: 00050006
RAX: 0000000000000000 RBX: 00007ffffffff000 RCX: ffff88810f35bb40
RDX: ffffc90004bf4000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffffc90000d57668 R08: ffffffff826eabbf R09: ffffffff81aee113
R10: 0000000000000003 R11: ffff88810f35bb40 R12: 0000000000000004
R13: 0000000000000003 R14: 0000000000000000 R15: ffffc90000d576e8
 strncpy_from_user_nofault+0x73/0x150 mm/maccess.c:279
 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:191 [inline]
 ____bpf_probe_read_user_str kernel/trace/bpf_trace.c:200 [inline]
 bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:197
 bpf_prog_bc7c5c6b9645592f+0x35/0xf9c
 bpf_dispatcher_nop_func include/linux/bpf.h:669 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2061 [inline]
 bpf_trace_run5+0x176/0x320 kernel/trace/bpf_trace.c:2101
 __bpf_trace_signal_generate+0x3c/0x50 include/trace/events/signal.h:50
 trace_signal_generate include/trace/events/signal.h:50 [inline]
 __send_signal+0xb39/0xb90 kernel/signal.c:1186
 send_signal+0x4c1/0x5e0 kernel/signal.c:1245
 force_sig_info_to_task+0x272/0x320 kernel/signal.c:1337
 force_sig_fault_to_task kernel/signal.c:1684 [inline]
 force_sig_fault+0x125/0x1c0 kernel/signal.c:1691
 no_context+0x2e1/0xf20 arch/x86/mm/fault.c:672
 __bad_area_nosemaphore+0xcd/0x440 arch/x86/mm/fault.c:848
 __bad_area arch/x86/mm/fault.c:869 [inline]
 bad_area+0x69/0x80 arch/x86/mm/fault.c:875
 handle_page_fault arch/x86/mm/fault.c:1462 [inline]
 exc_page_fault+0x439/0x5b0 arch/x86/mm/fault.c:1518
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571
RIP: 0010:__put_user_nocheck_8+0x11/0x21
Code: 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f 00 00 48 39 d9 73 14 0f 01 cb 48 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 <0f> 01 ca b9 f2 ff ff ff c3 cc cc cc cc cc cc cc 55 48 89 e5 41 57
RSP: 0000:ffffc90000d57d98 EFLAGS: 00050283
RAX: 0000000077359456 RBX: 00007fffffffeff9 RCX: 0000000000000019
RDX: ffffc90004bf4000 RSI: 0000000000000a2c RDI: 0000000000000a2d
RBP: ffffc90000d57e48 R08: ffffffff815b5f84 R09: ffffc90000d57de0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000d57de0
R13: dffffc0000000000 R14: 1ffff920001aafb8 R15: 0000000000000019
 emulate_vsyscall+0xe33/0x13d0 arch/x86/entry/vsyscall/vsyscall_64.c:246
 do_user_addr_fault arch/x86/mm/fault.c:1309 [inline]
 handle_page_fault arch/x86/mm/fault.c:1462 [inline]
 exc_page_fault+0x147/0x5b0 arch/x86/mm/fault.c:1518
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571
RIP: 0033:_end+0x783da000/0x0
Code: Unable to access opcode bytes at RIP 0xffffffffff5fffd6.
RSP: 002b:00007fa7e4bd5b38 EFLAGS: 00010246
RAX: ffffffffffffffda RBX: 00007fa7e5f90f80 RCX: 00007fa7e5e62e69
RDX: 00007fa7e4bd5b40 RSI: 00007fa7e4bd5c70 RDI: 0000000000000019
RBP: 00007fa7e5eaf47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fa7e5f90f80 R15: 00007ffec28fd2f8