------------[ cut here ]------------
WARNING: CPU: 0 PID: 6004 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 6004 Comm: syz.2.435 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ad 89 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 30 86 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:ffffc90000006cc8 EFLAGS: 00010246
RAX: ffffffff81a08e70 RBX: 0000000000000000 RCX: ffff8880219d3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8f106008 R09: ffffffff8f106018
R10: ffffffff8f106010 R11: ffffffff8f106003 R12: ffff8880219d5328
R13: ffffc900011cc000 R14: ffffc90000006d28 R15: 0000000000000000
FS:  00007f2e375726c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 000000007d360000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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_f2594087b0f175cc+0x32/0x824
 bpf_dispatcher_nop_func include/linux/bpf.h:890 [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_flow_dissect+0x33c/0x3e0 net/core/flow_dissector.c:896
 __skb_flow_dissect+0x7cc/0x6180 net/core/flow_dissector.c:1029
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
 ___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1638
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1703
 skb_get_hash include/linux/skbuff.h:1432 [inline]
 skb_tx_hash net/core/dev.c:3256 [inline]
 netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153
 netdev_core_pick_tx+0x141/0x300 net/core/dev.c:4186
 __dev_queue_xmit+0x797/0x2e50 net/core/dev.c:4261
 neigh_hh_output include/net/neighbour.h:493 [inline]
 neigh_output include/net/neighbour.h:507 [inline]
 ip6_finish_output2+0x1134/0x1640 net/ipv6/ip6_output.c:132
 dst_output include/net/dst.h:452 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xb7c/0x1410 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x367/0x640 net/ipv6/addrconf.c:3966
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__x64_sys_futex+0x0/0xf0 kernel/futex/core.c:4076
Code: 64 24 08 48 8b 5c 24 10 49 bd 00 00 00 00 00 fc ff df e9 42 fb ff ff e8 de 26 54 08 e8 99 06 0c 00 0f 0b e8 92 06 0c 00 0f 0b <55> 41 57 41 56 41 55 41 54 53 50 48 89 fb 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc9000345ff18 EFLAGS: 00000287
RAX: 00000000000000ca RBX: ffffc9000345ff20 RCX: 628309854beae600
RDX: dffffc0000000000 RSI: 00000000000000ca RDI: ffffc9000345ff58
RBP: ffffc9000345ff48 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc9000345ff58 R15: 00000000000000ca
 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: 0033:0x7f2e3933b159
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:00007f2e375720e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f2e395c3098 RCX: 00007f2e3933b159
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2e395c309c
RBP: 00007f2e395c3090 R08: 001fba072f8d9743 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2e395c3128 R14: 00007ffe100da6e0 R15: 00007ffe100da7c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	64 24 08             	fs and $0x8,%al
   3:	48 8b 5c 24 10       	mov    0x10(%rsp),%rbx
   8:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
   f:	fc ff df
  12:	e9 42 fb ff ff       	jmp    0xfffffb59
  17:	e8 de 26 54 08       	call   0x85426fa
  1c:	e8 99 06 0c 00       	call   0xc06ba
  21:	0f 0b                	ud2
  23:	e8 92 06 0c 00       	call   0xc06ba
  28:	0f 0b                	ud2
* 2a:	55                   	push   %rbp <-- trapping instruction
  2b:	41 57                	push   %r15
  2d:	41 56                	push   %r14
  2f:	41 55                	push   %r13
  31:	41 54                	push   %r12
  33:	53                   	push   %rbx
  34:	50                   	push   %rax
  35:	48 89 fb             	mov    %rdi,%rbx
  38:	49                   	rex.WB
  39:	be 00 00 00 00       	mov    $0x0,%esi
  3e:	00 fc                	add    %bh,%ah