------------[ cut here ]------------
WARNING: CPU: 1 PID: 10473 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 10473 Comm: syz.1.2115 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 90 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 00 8d 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:ffffc90000dcfd28 EFLAGS: 00010246
RAX: ffffffff81a0a790 RBX: 0000000000000000 RCX: ffff888027a21dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd0157 R09: ffffc90000dd0124
R10: dffffc0000000000 R11: fffff520001ba02b R12: ffff888027a23548
R13: ffffc900011b6030 R14: ffffc90000dcfd88 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c34aa33 CR3: 000000001f009000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
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+0x32/0x6ec
 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_prog_run_pin_on_cpu include/linux/filter.h:652 [inline]
 bpf_flow_dissect+0x12b/0x3f0 net/core/flow_dissector.c:896
 __skb_flow_dissect+0x792/0x60b0 net/core/flow_dissector.c:1024
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline]
 ___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1583
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1648
 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+0x12e/0x2e0 net/core/dev.c:4186
 __dev_queue_xmit+0x756/0x2f80 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+0x1051/0x1510 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
 addrconf_rs_timer+0x2d1/0x630 net/ipv6/addrconf.c:3956
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:49 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline]
RIP: 0010:unwind_next_frame+0x1084/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: 0f b6 04 08 84 c0 75 27 49 63 06 4c 01 f0 49 8d 4e 04 48 39 e8 4c 0f 46 e9 49 8d 46 fc 4c 0f 47 e0 4d 0f 46 fe 4d 39 e5 76 a8 <e9> be f1 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 7c cc 4c 89 f7 48
RSP: 0018:ffffc90002fdf068 EFLAGS: 00000202
RAX: ffffffff8d9e98d4 RBX: ffffc90002fdf128 RCX: ffffffff8d9e98dc
RDX: ffffffff8d9e98d8 RSI: ffffffff8e0d579c RDI: ffffffff81351d2c
RBP: ffffffff81b07897 R08: 0000000000000001 R09: 0000000000000008
R10: dffffc0000000000 R11: fffff520005fbe31 R12: ffffffff8d9e98d8
R13: ffffffff8d9e98dc R14: ffffffff8d9e98d8 R15: ffffffff8d9e98d8
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kmem_cache_free+0x8f/0x210 mm/slub.c:3520
 pgtable_pte_page_dtor include/linux/mm.h:2277 [inline]
 ___pte_free_tlb+0x83/0x2a0 arch/x86/mm/pgtable.c:55
 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline]
 free_pte_range mm/memory.c:231 [inline]
 free_pmd_range mm/memory.c:249 [inline]
 free_pud_range mm/memory.c:283 [inline]
 free_p4d_range mm/memory.c:317 [inline]
 free_pgd_range+0x622/0xb00 mm/memory.c:397
 free_pgtables+0x271/0x2a0 mm/memory.c:-1
 exit_mmap+0x3c8/0x640 mm/mmap.c:3217
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x588/0x6e0 kernel/exit.c:550
 do_exit+0x5a9/0x20c0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xe7/0x12c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7983b50dd9
Code: Unable to access opcode bytes at RIP 0x7f7983b50daf.
RSP: 002b:00007f7981daa0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7983dc9fa8 RCX: 00007f7983b50dd9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7983dc9fa8
RBP: 00007f7983dc9fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7983dca038 R14: 00007ffc1c13a7c0 R15: 00007ffc1c13a8a8
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax
   4:	84 c0                	test   %al,%al
   6:	75 27                	jne    0x2f
   8:	49 63 06             	movslq (%r14),%rax
   b:	4c 01 f0             	add    %r14,%rax
   e:	49 8d 4e 04          	lea    0x4(%r14),%rcx
  12:	48 39 e8             	cmp    %rbp,%rax
  15:	4c 0f 46 e9          	cmovbe %rcx,%r13
  19:	49 8d 46 fc          	lea    -0x4(%r14),%rax
  1d:	4c 0f 47 e0          	cmova  %rax,%r12
  21:	4d 0f 46 fe          	cmovbe %r14,%r15
  25:	4d 39 e5             	cmp    %r12,%r13
  28:	76 a8                	jbe    0xffffffd2
* 2a:	e9 be f1 ff ff       	jmp    0xfffff1ed <-- trapping instruction
  2f:	44 89 f1             	mov    %r14d,%ecx
  32:	80 e1 07             	and    $0x7,%cl
  35:	80 c1 03             	add    $0x3,%cl
  38:	38 c1                	cmp    %al,%cl
  3a:	7c cc                	jl     0x8
  3c:	4c 89 f7             	mov    %r14,%rdi
  3f:	48                   	rex.W