------------[ cut here ]------------
WARNING: CPU: 1 PID: 1845 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 1845 Comm: syz.5.8247 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 5d 95 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 e0 91 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:ffffc90000dd0158 EFLAGS: 00010246
RAX: ffffffff81a0b710 RBX: 0000000000000008 RCX: ffff8880238cbb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8f0ed048 R09: ffffffff8f0ed058
R10: ffffffff8f0ed050 R11: ffffffff8f0ed043 R12: ffff8880238cd308
R13: dffffc0000000000 R14: ffffc90000dd01c0 R15: 0000000000000000
FS: 00007f85865f56c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc7eeb7dac CR3: 000000013fe33000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_f6c3d2100ad96f09+0x3d/0x9ac
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:621 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_prog_run_pin_on_cpu include/linux/filter.h:652 [inline]
bpf_prog_run_clear_cb+0x108/0x1a0 include/linux/filter.h:806
run_filter+0x12a/0x220 net/packet/af_packet.c:2101
packet_rcv+0x388/0x1210 net/packet/af_packet.c:2174
dev_queue_xmit_nit+0xa69/0xb00 net/core/dev.c:2386
xmit_one net/core/dev.c:3657 [inline]
dev_hard_start_xmit+0x13e/0x7e0 net/core/dev.c:3678
__dev_queue_xmit+0x1a9b/0x2f80 net/core/dev.c:4305
neigh_output include/net/neighbour.h:509 [inline]
ip6_finish_output2+0x108c/0x1510 net/ipv6/ip6_output.c:130
dst_output include/net/dst.h:452 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
ndisc_send_skb+0xc2a/0x1500 net/ipv6/ndisc.c:513
ndisc_send_ns+0x648/0x850 net/ipv6/ndisc.c:655
ndisc_solicit+0x300/0x4f0 net/ipv6/ndisc.c:747
neigh_probe net/core/neighbour.c:1017 [inline]
neigh_timer_handler+0xaa9/0xfe0 net/core/neighbour.c:1099
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 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:pvclock_scale_delta arch/x86/include/asm/pvclock.h:68 [inline]
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:85 [inline]
RIP: 0010:pvclock_clocksource_read+0x18d/0x760 arch/x86/kernel/pvclock.c:76
Code: 78 15 45 89 ef 41 80 fd 40 0f 83 9b 04 00 00 44 89 f9 48 d3 e5 eb 13 41 f7 dd 41 83 fd 40 0f 83 d3 04 00 00 44 89 e9 48 d3 ed <4c> 89 b4 24 98 00 00 00 48 89 e8 48 f7 a4 24 98 00 00 00 48 0f ac
RSP: 0018:ffffc9000338fa20 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 000000000000000c RCX: 0000000000000001
RDX: 000000000000029c RSI: ffffffff8f0ed05c RDI: ffffffff8f0ed040
RBP: 0000014e0af53e3c R08: ffffffff8f0ed048 R09: ffffffff8f0ed058
R10: ffffffff8f0ed050 R11: ffffffff8f0ed043 R12: dffffc0000000000
R13: 0000000000000001 R14: 00000000e8ba357a R15: 0000607f46a02d50
kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
__bpf_prog_run include/linux/filter.h:625 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_test_run+0x521/0x800 net/bpf/test_run.c:119
bpf_prog_test_run_skb+0x98b/0x10b0 net/bpf/test_run.c:678
bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3374
__sys_bpf+0x5a5/0x6f0 kernel/bpf/syscall.c:4675
__do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
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: 0033:0x7f858839be59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f85865f5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8588614fa0 RCX: 00007f858839be59
RDX: 0000000000000050 RSI: 0000200000000500 RDI: 000000000000000a
RBP: 00007f8588431d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8588615038 R14: 00007f8588614fa0 R15: 00007ffe28c79e98
----------------
Code disassembly (best guess):
0: 78 15 js 0x17
2: 45 89 ef mov %r13d,%r15d
5: 41 80 fd 40 cmp $0x40,%r13b
9: 0f 83 9b 04 00 00 jae 0x4aa
f: 44 89 f9 mov %r15d,%ecx
12: 48 d3 e5 shl %cl,%rbp
15: eb 13 jmp 0x2a
17: 41 f7 dd neg %r13d
1a: 41 83 fd 40 cmp $0x40,%r13d
1e: 0f 83 d3 04 00 00 jae 0x4f7
24: 44 89 e9 mov %r13d,%ecx
27: 48 d3 ed shr %cl,%rbp
* 2a: 4c 89 b4 24 98 00 00 mov %r14,0x98(%rsp) <-- trapping instruction
31: 00
32: 48 89 e8 mov %rbp,%rax
35: 48 f7 a4 24 98 00 00 mulq 0x98(%rsp)
3c: 00
3d: 48 rex.W
3e: 0f .byte 0xf
3f: ac lods %ds:(%rsi),%al