------------[ cut here ]------------
WARNING: CPU: 1 PID: 4819 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4819 Comm: syz.1.142 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c0 f3 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd09f8 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff88807bbc5940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f778b29
R10: ffffed100f778b29 R11: 1ffff1100f778b28 R12: ffff88807bbc70c8
R13: 00007ffffffff000 R14: ffffc90000dd0a68 R15: 0000000000000000
FS: 00007fa1928ef6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005b4e2000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_a9d1eab64edc2dc9+0x56/0x980
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
kmem_cache_free+0x1e7/0x210 mm/slub.c:3521
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:vmx_do_interrupt_nmi_irqoff+0x10/0x20 arch/x86/kvm/vmx/vmenter.S:334
Code: 41 5b 41 5a 41 59 41 58 5e 5f 5a 59 58 5d c3 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 48 83 e4 f0 6a 18 55 9c 6a 10 ff d7 <48> 89 ec 5d c3 00 00 cc cc 00 00 cc cc 00 00 cc 55 41 57 41 56 53
RSP: 0018:ffffc9000353f430 EFLAGS: 00000086
RAX: 0000000000000001 RBX: ffff88805b8a4000 RCX: 29409eedf3415100
RDX: 0000000000000cf0 RSI: ffffffff8a0468c0 RDI: ffffffff89c00cf0
RBP: ffffc9000353f430 R08: dffffc0000000000 R09: ffffed100b71484d
R10: ffffed100b71484d R11: 1ffff1100b71484c R12: 1ffff920006a7e8c
R13: dffffc0000000000 R14: fffffe0000000ecb R15: ffffffff89c00cf0
handle_interrupt_nmi_irqoff arch/x86/kvm/vmx/vmx.c:6491 [inline]
handle_external_interrupt_irqoff arch/x86/kvm/vmx/vmx.c:6521 [inline]
vmx_handle_exit_irqoff+0x358/0x800 arch/x86/kvm/vmx/vmx.c:6533
vcpu_enter_guest+0x5e50/0x7110 arch/x86/kvm/x86.c:10024
vcpu_run arch/x86/kvm/x86.c:10174 [inline]
kvm_arch_vcpu_ioctl_run+0xdea/0x1f40 arch/x86/kvm/x86.c:10411
kvm_vcpu_ioctl+0x887/0xb80 virt/kvm/kvm_main.c:3894
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa194687ec9
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:00007fa1928ef038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa1948defa0 RCX: 00007fa194687ec9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000000e
RBP: 00007fa19470af91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa1948df038 R14: 00007fa1948defa0 R15: 00007fff813d9f28
----------------
Code disassembly (best guess):
0: 41 5b pop %r11
2: 41 5a pop %r10
4: 41 59 pop %r9
6: 41 58 pop %r8
8: 5e pop %rsi
9: 5f pop %rdi
a: 5a pop %rdx
b: 59 pop %rcx
c: 58 pop %rax
d: 5d pop %rbp
e: c3 ret
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 55 push %rbp
1b: 48 89 e5 mov %rsp,%rbp
1e: 48 83 e4 f0 and $0xfffffffffffffff0,%rsp
22: 6a 18 push $0x18
24: 55 push %rbp
25: 9c pushf
26: 6a 10 push $0x10
28: ff d7 call *%rdi
* 2a: 48 89 ec mov %rbp,%rsp <-- trapping instruction
2d: 5d pop %rbp
2e: c3 ret
2f: 00 00 add %al,(%rax)
31: cc int3
32: cc int3
33: 00 00 add %al,(%rax)
35: cc int3
36: cc int3
37: 00 00 add %al,(%rax)
39: cc int3
3a: 55 push %rbp
3b: 41 57 push %r15
3d: 41 56 push %r14
3f: 53 push %rbx