------------[ cut here ]------------
WARNING: CPU: 1 PID: 18386 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 18386 Comm: syz.5.3606 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 dd 99 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 60 96 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:ffffc90000dd0998 EFLAGS: 00010006
RAX: ffffffff81a05c40 RBX: 0000000000000008 RCX: ffff888040a7d940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888040a7d947 R09: 1ffff1100814fb28
R10: dffffc0000000000 R11: ffffed100814fb29 R12: ffff888040a7f0c8
R13: 00007ffffffff000 R14: ffffc90000dd0a08 R15: 0000000000000005
FS: 00007fce00f3c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fce02f7edac CR3: 0000000039627000 CR4: 00000000003506e0
DR0: 0000200000000300 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_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_35c2aeabad5a7bfe+0x45/0x2cc
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_ARRAY include/linux/bpf.h:1439 [inline]
trace_call_bpf+0x32d/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_lock+0x301/0x390 include/trace/events/lock.h:39
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x84a/0x8a0 kernel/locking/lockdep.c:5634
seqcount_lockdep_reader_access+0xe0/0x1d0 include/linux/seqlock.h:104
ktime_get_update_offsets_now+0x44/0x3e0 kernel/time/timekeeping.c:2300
hrtimer_update_base kernel/time/hrtimer.c:621 [inline]
hrtimer_interrupt+0x121/0x8b0 kernel/time/hrtimer.c:1793
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:mod_node_state+0xf8/0x120 mm/vmstat.c:645
Code: 00 41 83 fe 28 73 2b 48 8d 3c dd 40 44 01 8c be 08 00 00 00 e8 79 43 16 00 f0 4c 01 24 dd 40 44 01 8c 5b 41 5c 41 5e 41 5f 5d 0f 0b e9 55 ff ff ff 48 c7 c7 c0 2c 3c 8c 48 89 de e8 b1 08 5b
RSP: 0018:ffffc90002e5f0c8 EFLAGS: 00000246
RAX: 0000000000000009 RBX: ffff888141595000 RCX: dffffc0000000009
RDX: 0000000000040d00 RSI: 0000000000000001 RDI: 0000000000000018
RBP: 0000000000000a20 R08: 000000000000000a R09: 1ffffffff1b13c0d
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: 0000000000000000
R13: 00000000ffffffff R14: ffffea00016f49c0 R15: 0000000000000010
account_slab_page mm/slab.h:426 [inline]
allocate_slab mm/slub.c:1933 [inline]
new_slab+0x143/0x4b0 mm/slub.c:1980
___slab_alloc+0x807/0xdd0 mm/slub.c:3013
__slab_alloc mm/slub.c:3100 [inline]
slab_alloc_node mm/slub.c:3191 [inline]
slab_alloc mm/slub.c:3233 [inline]
kmem_cache_alloc+0xf0/0x280 mm/slub.c:3238
dst_alloc+0x101/0x160 net/core/dst.c:88
rt_dst_alloc net/ipv4/route.c:1658 [inline]
__mkroute_output net/ipv4/route.c:2631 [inline]
ip_route_output_key_hash_rcu+0x15b9/0x24f0 net/ipv4/route.c:2854
ip_route_output_key_hash+0x1c6/0x300 net/ipv4/route.c:2683
__ip_route_output_key include/net/route.h:126 [inline]
vti_xmit net/ipv4/ip_vti.c:184 [inline]
vti_tunnel_xmit+0x546/0x16b0 net/ipv4/ip_vti.c:304
__netdev_start_xmit include/linux/netdevice.h:5036 [inline]
netdev_start_xmit include/linux/netdevice.h:5050 [inline]
xmit_one net/core/dev.c:3662 [inline]
dev_hard_start_xmit+0x297/0x7d0 net/core/dev.c:3678
__dev_queue_xmit+0x195d/0x2e50 net/core/dev.c:4305
__bpf_tx_skb net/core/filter.c:2136 [inline]
__bpf_redirect_no_mac net/core/filter.c:2170 [inline]
__bpf_redirect+0x693/0xe90 net/core/filter.c:2193
____bpf_clone_redirect net/core/filter.c:2471 [inline]
bpf_clone_redirect+0x2e1/0x460 net/core/filter.c:2434
bpf_prog_b36a1f39e2fdd4f4+0x56/0x8fc
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_test_run+0x4ae/0x800 net/bpf/test_run.c:119
bpf_prog_test_run_skb+0x9fb/0x1190 net/bpf/test_run.c:678
bpf_prog_test_run+0x31c/0x390 kernel/bpf/syscall.c:3374
__sys_bpf+0x5a5/0x6f0 kernel/bpf/syscall.c:4675
__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: 0033:0x7fce02d03e59
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:00007fce00f3c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fce02f7d090 RCX: 00007fce02d03e59
RDX: 0000000000000050 RSI: 0000200000002300 RDI: 000000000000000a
RBP: 00007fce02d99e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fce02f7d128 R14: 00007fce02f7d090 R15: 00007ffe04d4c4d8
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 41 83 fe 28 cmp $0x28,%r14d
4: 73 2b jae 0x31
6: 48 8d 3c dd 40 44 01 lea -0x73febbc0(,%rbx,8),%rdi
d: 8c
e: be 08 00 00 00 mov $0x8,%esi
13: e8 79 43 16 00 call 0x164391
18: f0 4c 01 24 dd 40 44 lock add %r12,-0x73febbc0(,%rbx,8)
1f: 01 8c
21: 5b pop %rbx
22: 41 5c pop %r12
24: 41 5e pop %r14
26: 41 5f pop %r15
28: 5d pop %rbp
* 29: c3 ret <-- trapping instruction
2a: 0f 0b ud2
2c: e9 55 ff ff ff jmp 0xffffff86
31: 48 c7 c7 c0 2c 3c 8c mov $0xffffffff8c3c2cc0,%rdi
38: 48 89 de mov %rbx,%rsi
3b: e8 .byte 0xe8
3c: b1 08 mov $0x8,%cl
3e: 5b pop %rbx