------------[ cut here ]------------
WARNING: CPU: 1 PID: 4328 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4328 Comm: syz.4.5 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: ffffffff81a07ea0 RBX: 0000000000000000 RCX: ffff88801eac3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc90000dd0157 R09: ffffc90000dd0124
R10: dffffc0000000000 R11: fffff520001ba02b R12: ffff88801eac5308
R13: ffffc9000137f030 R14: ffffc90000dcfd88 R15: 0000000000000000
FS: 00007fc72742e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff69316ff8 CR3: 00000000201cf000 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_f2594087b0f175cc+0x32/0x5bc
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:find_va_links mm/vmalloc.c:889 [inline]
RIP: 0010:merge_or_add_vmap_area mm/vmalloc.c:1094 [inline]
RIP: 0010:merge_or_add_vmap_area_augment mm/vmalloc.c:1168 [inline]
RIP: 0010:__purge_vmap_area_lazy+0x387/0x1950 mm/vmalloc.c:1704
Code: 4c 8d 7b f8 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 10 c4 0a 00 4c 8d 63 f0 49 8b 37 <48> 8b 7c 24 38 48 89 74 24 10 e8 ba c1 c5 ff 4d 89 e6 49 c1 ee 03
RSP: 0018:ffffc90002f7f420 EFLAGS: 00000246
RAX: 1ffff110031bed75 RBX: ffff888018df6bb0 RCX: dffffc0000000000
RDX: ffffc9000e501000 RSI: ffffc90001261000 RDI: 000000000000b560
RBP: ffffc90002f7f550 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520005efe70 R12: ffff888018df6ba0
R13: ffffc9000122e000 R14: 0000000000000008 R15: ffff888018df6ba8
_vm_unmap_aliases+0x410/0x4a0 mm/vmalloc.c:2114
change_page_attr_set_clr+0x323/0xca0 arch/x86/mm/pat/set_memory.c:1740
change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1943
bpf_jit_binary_lock_ro include/linux/filter.h:919 [inline]
bpf_int_jit_compile+0xc6d8/0xcd80 arch/x86/net/bpf_jit_comp.c:2478
bpf_prog_select_runtime+0x46f/0x7c0 kernel/bpf/core.c:1977
bpf_prog_load+0x1017/0x1510 kernel/bpf/syscall.c:2358
__sys_bpf+0x532/0x6f0 kernel/bpf/syscall.c:4657
__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: 0033:0x7fc7291d2cb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc72742e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fc72944dfa0 RCX: 00007fc7291d2cb9
RDX: 0000000000000080 RSI: 0000200000000140 RDI: 0000000000000005
RBP: 00007fc729240bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc72944e038 R14: 00007fc72944dfa0 R15: 00007ffd9a50d6d8
----------------
Code disassembly (best guess):
0: 4c 8d 7b f8 lea -0x8(%rbx),%r15
4: 4c 89 f8 mov %r15,%rax
7: 48 c1 e8 03 shr $0x3,%rax
b: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
12: fc ff df
15: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1)
19: 74 08 je 0x23
1b: 4c 89 ff mov %r15,%rdi
1e: e8 10 c4 0a 00 call 0xac433
23: 4c 8d 63 f0 lea -0x10(%rbx),%r12
27: 49 8b 37 mov (%r15),%rsi
* 2a: 48 8b 7c 24 38 mov 0x38(%rsp),%rdi <-- trapping instruction
2f: 48 89 74 24 10 mov %rsi,0x10(%rsp)
34: e8 ba c1 c5 ff call 0xffc5c1f3
39: 4d 89 e6 mov %r12,%r14
3c: 49 c1 ee 03 shr $0x3,%r14