------------[ cut here ]------------
WARNING: CPU: 1 PID: 4299 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4299 Comm: syz.2.3 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:ffffc90000dd0410 EFLAGS: 00010246
RAX: ffffffff819ed900 RBX: 0000000000000008 RCX: ffff88807f103b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100fe20771
R10: ffffed100fe20771 R11: 1ffff1100fe20770 R12: ffff88807f105308
R13: 00007ffffffff000 R14: ffffc90000dd0488 R15: 0000000020000000
FS: 00007fd23b49f6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c330158 CR3: 000000005fa66000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_5552427ec2450e15+0x40/0xca8
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_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x25f/0x2a0 mm/slub.c:4554
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x6fe/0x850 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb net/core/skbuff.c:756 [inline]
kfree_skb_reason+0xaf/0x110 net/core/skbuff.c:776
kfree_skb include/linux/skbuff.h:1118 [inline]
neigh_connected_output+0x3b9/0x3e0 net/core/neighbour.c:1536
neigh_output include/net/neighbour.h:509 [inline]
ip6_finish_output2+0x1070/0x1500 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:smp_call_function_many_cond+0xa89/0xd70 kernel/smp.c:904
Code: e8 1c 47 0b 00 0f 0b e9 73 f9 ff ff e8 10 47 0b 00 e8 db e8 3c 08 48 85 db 0f 84 97 fe ff ff e8 fd 46 0b 00 fb 44 3b 7c 24 64 <0f> 92 c0 84 44 24 3c 75 0a e8 e9 46 0b 00 e9 95 01 00 00 49 8d 75
RSP: 0018:ffffc9000448f880 EFLAGS: 00000293
RAX: ffffffff816c8513 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000d0a9000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000448f9c0 R08: dffffc0000000000 R09: fffffbfff1ff7c19
R10: fffffbfff1ff7c19 R11: 1ffffffff1ff7c18 R12: 0000000000000000
R13: ffff8880b913b3c0 R14: 0000000000000000 R15: 0000000000000000
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1134
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1442 [inline]
text_poke_bp_batch+0x706/0x7c0 arch/x86/kernel/alternative.c:-1
text_poke_flush arch/x86/kernel/alternative.c:1833 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1840
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x11f/0x240 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
tracepoint_add_func+0x83b/0x9a0 kernel/tracepoint.c:361
tracepoint_probe_register_prio_may_exist+0x5c/0x90 kernel/tracepoint.c:482
bpf_raw_tracepoint_open+0x69d/0x780 kernel/bpf/syscall.c:3119
__sys_bpf+0x48b/0x670 kernel/bpf/syscall.c:4699
__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: 0033:0x7fd23d238749
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:00007fd23b49f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd23d48efa0 RCX: 00007fd23d238749
RDX: 0000000000000010 RSI: 0000200000000f40 RDI: 0000000000000011
RBP: 00007fd23d2bcf91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd23d48f038 R14: 00007fd23d48efa0 R15: 00007ffffb545e48
----------------
Code disassembly (best guess):
0: e8 1c 47 0b 00 call 0xb4721
5: 0f 0b ud2
7: e9 73 f9 ff ff jmp 0xfffff97f
c: e8 10 47 0b 00 call 0xb4721
11: e8 db e8 3c 08 call 0x83ce8f1
16: 48 85 db test %rbx,%rbx
19: 0f 84 97 fe ff ff je 0xfffffeb6
1f: e8 fd 46 0b 00 call 0xb4721
24: fb sti
25: 44 3b 7c 24 64 cmp 0x64(%rsp),%r15d
* 2a: 0f 92 c0 setb %al <-- trapping instruction
2d: 84 44 24 3c test %al,0x3c(%rsp)
31: 75 0a jne 0x3d
33: e8 e9 46 0b 00 call 0xb4721
38: e9 95 01 00 00 jmp 0x1d2
3d: 49 rex.WB
3e: 8d .byte 0x8d
3f: 75 .byte 0x75