------------[ cut here ]------------
WARNING: CPU: 1 PID: 4179 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4179 Comm: udevd 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:ffffc90000dd0300 EFLAGS: 00010246
RAX: ffffffff81a0b710 RBX: 0000000000000000 RCX: ffff88807d2cbb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8f0ed048 R09: ffffffff8f0ed058
R10: ffffffff8f0ed050 R11: ffffffff8f0ed043 R12: ffff88807d2cd308
R13: dffffc0000000000 R14: ffffc90000dd0360 R15: 0000000000000000
FS:  00007f30206a7880(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a1dff8 CR3: 0000000020e95000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_690f12e098ef46de+0x32/0x7a0
 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_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:free_unref_page_list+0x79b/0x820 mm/page_alloc.c:3479
Code: 24 80 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 42 c6 44 28 08 f8 75 53 f7 c3 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <48> 8b 44 24 08 4a c7 04 28 00 00 00 00 4a c7 44 28 08 00 00 00 00
RSP: 0018:ffffc9000269f9c0 EFLAGS: 00000206
RAX: 1ffff920004d3f40 RBX: 0000000000000246 RCX: 05a9cbe77c536e00
RDX: dffffc0000000000 RSI: ffffffff8a2b3180 RDI: ffffffff8a7a09c0
RBP: ffffc9000269faf0 R08: ffffffff901d80f7 R09: 1ffffffff203b01e
R10: dffffc0000000000 R11: fffffbfff203b01f R12: ffffc9000269fb80
R13: dffffc0000000000 R14: ffffffff8be35828 R15: ffffc9000269fb80
 release_pages+0x186c/0x1be0 mm/swap.c:963
 tlb_batch_pages_flush mm/mmu_gather.c:50 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:241 [inline]
 tlb_flush_mmu mm/mmu_gather.c:248 [inline]
 tlb_finish_mmu+0x1b4/0x370 mm/mmu_gather.c:371
 unmap_region+0x344/0x3b0 mm/mmap.c:2669
 __do_munmap+0x9f8/0xdf0 mm/mmap.c:2899
 __vm_munmap+0x140/0x240 mm/mmap.c:2952
 __do_sys_munmap mm/mmap.c:2978 [inline]
 __se_sys_munmap mm/mmap.c:2974 [inline]
 __x64_sys_munmap+0x67/0x70 mm/mmap.c:2974
 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: 0033:0x7f302080c097
Code: 73 01 c3 48 8b 0d 61 2d 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 31 2d 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffde3ed33a8 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000561c20128790 RCX: 00007f302080c097
RDX: 0000561c20133ac8 RSI: 0000000000000600 RDI: 00007f301fd35000
RBP: 000000000000001f R08: 0000561c20128760 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 0000561c201270b0
R13: 00007f3020eeb39c R14: 0000000000004a00 R15: 0000000000000009
 </TASK>
----------------
Code disassembly (best guess):
   0:	24 80                	and    $0x80,%al
   2:	00 00                	add    %al,(%rax)
   4:	00 f7                	add    %dh,%bh
   6:	84 24 80             	test   %ah,(%rax,%rax,4)
   9:	00 00                	add    %al,(%rax)
   b:	00 00                	add    %al,(%rax)
   d:	02 00                	add    (%rax),%al
   f:	00 42 c6             	add    %al,-0x3a(%rdx)
  12:	44 28 08             	sub    %r9b,(%rax)
  15:	f8                   	clc
  16:	75 53                	jne    0x6b
  18:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	48 c7 44 24 40 0e 36 	movq   $0x45e0360e,0x40(%rsp)
  28:	e0 45
* 2a:	48 8b 44 24 08       	mov    0x8(%rsp),%rax <-- trapping instruction
  2f:	4a c7 04 28 00 00 00 	movq   $0x0,(%rax,%r13,1)
  36:	00
  37:	4a c7 44 28 08 00 00 	movq   $0x0,0x8(%rax,%r13,1)
  3e:	00 00