------------[ cut here ]------------
WARNING: CPU: 1 PID: 14089 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 14089 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 94 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 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:ffffc90000dcfd28 EFLAGS: 00010246
RAX: ffffffff81a08ea0 RBX: 0000000000000000 RCX: ffff888034673b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd0157 R09: ffffc90000dd0124
R10: dffffc0000000000 R11: fffff520001ba02b R12: ffff888034675308
R13: ffffc900010f9030 R14: ffffc90000dcfd88 R15: 0000000000000000
FS: 0000555585cfd500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff886dc6b8 CR3: 0000000023e67000 CR4: 00000000003506e0
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+0x32/0x9fc
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:3243 [inline]
netdev_pick_tx+0x335/0xad0 net/core/dev.c:4140
netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4173
__dev_queue_xmit+0x756/0x2fd0 net/core/dev.c:4248
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:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x53a/0x7f0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x80 kernel/kcov.c:301
Code: 28 4d 39 ca 77 22 89 ff 89 f6 4a c7 44 02 08 05 00 00 00 4a 89 7c 02 10 4a 89 74 02 18 4a 89 44 02 20 48 ff c1 48 89 0a c3 90 <48> 8b 04 24 65 48 8b 0d 34 4c 89 7e 65 8b 15 35 4c 89 7e 81 e2 00
RSP: 0018:ffffc90002e7f660 EFLAGS: 00000246
RAX: ffffffff81ad3588 RBX: 00007eff86ca2000 RCX: ffff888034673b80
RDX: 0000000000000000 RSI: 800000002bb76007 RDI: 0000000000000000
RBP: ffffc90002e7f950 R08: ffffea00016ae287 R09: 1ffffd40002d5c50
R10: dffffc0000000000 R11: fffff940002d5c51 R12: 1ffff1100ce084a2
R13: 800000002bb76007 R14: 800000002bb76007 R15: ffff888064c18630
__pte_needs_invert arch/x86/include/asm/pgtable-invert.h:18 [inline]
protnone_mask arch/x86/include/asm/pgtable-invert.h:24 [inline]
pte_pfn arch/x86/include/asm/pgtable.h:186 [inline]
vm_normal_page+0x22/0x1e0 mm/memory.c:608
copy_present_pte mm/memory.c:956 [inline]
copy_pte_range mm/memory.c:1081 [inline]
copy_pmd_range mm/memory.c:1167 [inline]
copy_pud_range mm/memory.c:1204 [inline]
copy_p4d_range mm/memory.c:1228 [inline]
copy_page_range+0x11ab/0x3230 mm/memory.c:1301
dup_mmap kernel/fork.c:615 [inline]
dup_mm kernel/fork.c:1466 [inline]
copy_mm+0xc86/0x13f0 kernel/fork.c:1518
copy_process+0x17eb/0x3e20 kernel/fork.c:2290
kernel_clone+0x23f/0x990 kernel/fork.c:2679
__do_sys_clone kernel/fork.c:2796 [inline]
__se_sys_clone kernel/fork.c:2780 [inline]
__x64_sys_clone+0x19a/0x210 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: 0033:0x7eff8795a752
Code: 89 e7 e8 f1 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd1987a800 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd1987a800 RCX: 00007eff8795a752
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd1987a98c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555585cfd7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 00000000002fc49f R15: 00007ffd1987a9e0
----------------
Code disassembly (best guess):
0: 28 4d 39 sub %cl,0x39(%rbp)
3: ca 77 22 lret $0x2277
6: 89 ff mov %edi,%edi
8: 89 f6 mov %esi,%esi
a: 4a c7 44 02 08 05 00 movq $0x5,0x8(%rdx,%r8,1)
11: 00 00
13: 4a 89 7c 02 10 mov %rdi,0x10(%rdx,%r8,1)
18: 4a 89 74 02 18 mov %rsi,0x18(%rdx,%r8,1)
1d: 4a 89 44 02 20 mov %rax,0x20(%rdx,%r8,1)
22: 48 ff c1 inc %rcx
25: 48 89 0a mov %rcx,(%rdx)
28: c3 ret
29: 90 nop
* 2a: 48 8b 04 24 mov (%rsp),%rax <-- trapping instruction
2e: 65 48 8b 0d 34 4c 89 mov %gs:0x7e894c34(%rip),%rcx # 0x7e894c6a
35: 7e
36: 65 8b 15 35 4c 89 7e mov %gs:0x7e894c35(%rip),%edx # 0x7e894c72
3d: 81 .byte 0x81
3e: e2 00 loop 0x40