------------[ cut here ]------------
WARNING: CPU: 1 PID: 4415 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4415 Comm: syz.4.66 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ed f7 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 70 f4 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:ffffc90000dd0448 EFLAGS: 00010246
RAX: ffffffff819ecfb0 RBX: 0000000000000000 RCX: ffff888022525940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff6e19
R10: fffffbfff1ff6e19 R11: 1ffffffff1ff6e18 R12: ffff8880225270c8
R13: dffffc0000000000 R14: ffffc90000dd04a8 R15: 0000000000000000
FS: 000055556db31500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff77860bbac CR3: 0000000025401000 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_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_690f12e098ef46de+0x32/0x808
bpf_dispatcher_nop_func include/linux/bpf.h:790 [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_run4+0x188/0x330 kernel/trace/bpf_trace.c:1917
__bpf_trace_mm_page_alloc+0xbf/0xf0 include/trace/events/kmem.h:201
trace_mm_page_alloc include/trace/events/kmem.h:201 [inline]
__alloc_pages+0x449/0x470 mm/page_alloc.c:5496
alloc_slab_page mm/slub.c:1775 [inline]
allocate_slab mm/slub.c:1912 [inline]
new_slab+0xc0/0x4b0 mm/slub.c:1975
___slab_alloc+0x81e/0xdf0 mm/slub.c:3008
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0x195/0x290 mm/slub.c:3233
dst_alloc+0x101/0x160 net/core/dst.c:88
ip6_dst_alloc net/ipv6/route.c:342 [inline]
icmp6_dst_alloc+0x78/0x4a0 net/ipv6/route.c:3268
ndisc_send_skb+0x3e2/0x14a0 net/ipv6/ndisc.c:493
addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3957
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:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0xb88/0xd70 kernel/smp.c:969
Code: b6 44 05 00 84 c0 0f 85 9d 00 00 00 41 8b 1c 24 89 de 83 e6 01 31 ff e8 a6 46 0b 00 83 e3 01 75 07 e8 3c 43 0b 00 eb 43 f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 11 41 f7
RSP: 0018:ffffc90002f7f880 EFLAGS: 00000293
RAX: ffffffff816c810b RBX: 0000000000000001 RCX: ffff888022525940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002f7f9c0 R08: dffffc0000000000 R09: fffffbfff1ff6e19
R10: fffffbfff1ff6e19 R11: 1ffffffff1ff6e18 R12: ffff8880b9042a08
R13: 1ffff11017208541 R14: ffff8880b913b380 R15: 0000000000000000
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135
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:3113
__sys_bpf+0x48b/0x670 kernel/bpf/syscall.c:4693
__do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
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: 0033:0x7ff7783e2b69
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:00007ffce1ca19c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff778609fa0 RCX: 00007ff7783e2b69
RDX: 0000000000000010 RSI: 0000200000000140 RDI: 0000000000000011
RBP: 00007ff778465df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff778609fa0 R14: 00007ff778609fa0 R15: 0000000000000003
----------------
Code disassembly (best guess):
0: b6 44 mov $0x44,%dh
2: 05 00 84 c0 0f add $0xfc08400,%eax
7: 85 9d 00 00 00 41 test %ebx,0x41000000(%rbp)
d: 8b 1c 24 mov (%rsp),%ebx
10: 89 de mov %ebx,%esi
12: 83 e6 01 and $0x1,%esi
15: 31 ff xor %edi,%edi
17: e8 a6 46 0b 00 call 0xb46c2
1c: 83 e3 01 and $0x1,%ebx
1f: 75 07 jne 0x28
21: e8 3c 43 0b 00 call 0xb4362
26: eb 43 jmp 0x6b
28: f3 90 pause
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 41 0f b6 44 05 00 movzbl 0x0(%r13,%rax,1),%eax
3a: 84 c0 test %al,%al
3c: 75 11 jne 0x4f
3e: 41 rex.B
3f: f7 .byte 0xf7