------------[ cut here ]------------
WARNING: CPU: 0 PID: 15692 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 15692 Comm: syz.5.2687 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d f6 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 10 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:ffffc90000006a48 EFLAGS: 00010246
RAX: ffffffff819ed900 RBX: 0000000000000000 RCX: ffff8880260a8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8eed3008 R09: ffffffff8eed3018
R10: ffffffff8eed3010 R11: ffffffff8eed3003 R12: ffff8880260a9788
R13: ffffc900011ae000 R14: ffffc90000006aa8 R15: 0000000000000000
FS: 00007f0569be36c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c344735 CR3: 0000000076d3b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 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_f2594087b0f175cc+0x32/0x54c
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_flow_dissect+0x33e/0x3f0 net/core/flow_dissector.c:896
__skb_flow_dissect+0x79f/0x5af0 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+0xb4/0x220 net/core/flow_dissector.c:1648
skb_get_hash include/linux/skbuff.h:1432 [inline]
udp_flow_src_port include/net/udp.h:230 [inline]
geneve6_xmit_skb drivers/net/geneve.c:1031 [inline]
geneve_xmit+0x883/0x3070 drivers/net/geneve.c:1116
__netdev_start_xmit include/linux/netdevice.h:5036 [inline]
netdev_start_xmit include/linux/netdevice.h:5050 [inline]
xmit_one net/core/dev.c:3649 [inline]
dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3665
__dev_queue_xmit+0x19df/0x2ed0 net/core/dev.c:4288
neigh_hh_output include/net/neighbour.h:493 [inline]
neigh_output include/net/neighbour.h:507 [inline]
ip6_finish_output2+0x1035/0x1500 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+0xbea/0x14a0 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3956
call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x525/0x7c0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
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:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:202
Code: 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 50 d3 f1 0b 48 89 de 5b e9 57 9e 43 00 00 00 cc cc 00 00 cc <48> 8b 04 24 65 48 8b 0d a4 a3 8a 7e 65 8b 15 a5 a3 8a 7e 81 e2 00
RSP: 0018:ffffc900030ff130 EFLAGS: 00000246
RAX: ffffffff87cff77b RBX: 0000000000000000 RCX: ffff8880260a8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888062a850c0 R08: dffffc0000000000 R09: fffffbfff1ad33a6
R10: fffffbfff1ad33a6 R11: 1ffffffff1ad33a5 R12: ffff8880680897fe
R13: ffff888068089780 R14: ffff888062a850c0 R15: 1ffff1100d011308
skb_zcopy include/linux/skbuff.h:1516 [inline]
skb_zcopy_clear include/linux/skbuff.h:1577 [inline]
skb_release_data+0x149/0x850 net/core/skbuff.c:669
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb net/core/skbuff.c:756 [inline]
consume_skb+0xa2/0x100 net/core/skbuff.c:914
netlink_broadcast_filtered+0x107a/0x1170 net/netlink/af_netlink.c:1534
netlink_broadcast+0x33/0x40 net/netlink/af_netlink.c:1556
uevent_net_broadcast_tagged lib/kobject_uevent.c:372 [inline]
kobject_uevent_net_broadcast+0x497/0x530 lib/kobject_uevent.c:412
kobject_uevent_env+0x556/0x890 lib/kobject_uevent.c:608
device_add+0x91c/0xfb0 drivers/base/core.c:3393
netdev_register_kobject+0x176/0x310 net/core/net-sysfs.c:2014
register_netdevice+0x1019/0x16b0 net/core/dev.c:10397
__ip_tunnel_create+0x2bf/0x380 net/ipv4/ip_tunnel.c:267
ip_tunnel_init_net+0x232/0x6b0 net/ipv4/ip_tunnel.c:1084
vti_init_net+0x2b/0xf0 net/ipv4/ip_vti.c:504
ops_init+0x357/0x600 net/core/net_namespace.c:138
setup_net+0x38d/0x9f0 net/core/net_namespace.c:333
copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
copy_process+0x180f/0x3e00 kernel/fork.c:2293
kernel_clone+0x219/0x930 kernel/fork.c:2679
__do_sys_clone kernel/fork.c:2796 [inline]
__se_sys_clone kernel/fork.c:2780 [inline]
__x64_sys_clone+0x170/0x1c0 kernel/fork.c:2780
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: 0033:0x7f056b99d749
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:00007f0569be2fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f056bbf4090 RCX: 00007f056b99d749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007f056ba21f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f056bbf4128 R14: 00007f056bbf4090 R15: 00007ffc641edf78
----------------
Code disassembly (best guess):
0: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
7: 00 00 00
a: 53 push %rbx
b: 48 89 fb mov %rdi,%rbx
e: e8 17 00 00 00 call 0x2a
13: 48 8b 3d 50 d3 f1 0b mov 0xbf1d350(%rip),%rdi # 0xbf1d36a
1a: 48 89 de mov %rbx,%rsi
1d: 5b pop %rbx
1e: e9 57 9e 43 00 jmp 0x439e7a
23: 00 00 add %al,(%rax)
25: cc int3
26: cc int3
27: 00 00 add %al,(%rax)
29: cc int3
* 2a: 48 8b 04 24 mov (%rsp),%rax <-- trapping instruction
2e: 65 48 8b 0d a4 a3 8a mov %gs:0x7e8aa3a4(%rip),%rcx # 0x7e8aa3da
35: 7e
36: 65 8b 15 a5 a3 8a 7e mov %gs:0x7e8aa3a5(%rip),%edx # 0x7e8aa3e2
3d: 81 .byte 0x81
3e: e2 00 loop 0x40