------------[ cut here ]------------
WARNING: CPU: 0 PID: 23489 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 23489 Comm: syz.0.3350 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 5d 95 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 e0 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:ffffc90000007978 EFLAGS: 00010006
RAX: ffffffff81a0b710 RBX: 0000000000000008 RCX: ffff8880650ed940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880650ed947 R09: 1ffff1100ca1db28
R10: dffffc0000000000 R11: ffffed100ca1db29 R12: ffff8880650ef0c8
R13: 00007ffffffff000 R14: ffffc900000079e8 R15: 0000000000000005
FS: 00007f92ae8406c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000005 CR3: 000000004350f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 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+0x45/0x380
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_ARRAY include/linux/bpf.h:1439 [inline]
trace_call_bpf+0x2b1/0x5b0 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+0x130/0x8d0 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:unwind_next_frame+0x6eb/0x1d90 arch/x86/kernel/unwind_orc.c:471
Code: 44 89 f9 80 e1 07 38 c1 0f 8c e0 01 00 00 be 02 00 00 00 48 89 7c 24 08 4c 89 ff e8 5f 2e 89 00 e9 fd 14 00 00 48 8b 44 24 40 <42> 80 3c 28 00 4c 8b 74 24 38 74 0c 4c 89 f7 e8 81 2d 89 00 48 8b
RSP: 0018:ffffc9000390f008 EFLAGS: 00000297
RAX: 1ffff92000721e20 RBX: ffffc9000390f0c8 RCX: ffffffff8dfc3a10
RDX: ffffffff8e99c21e RSI: ffffffff8e99c20c RDI: ffffffff81352e7c
RBP: ffffffff89e000c9 R08: 0000000000000004 R09: 000000000000000f
R10: dffffc0000000000 R11: fffff52000721e25 R12: 1ffffffff1d33844
R13: dffffc0000000000 R14: ffffffff8e99c222 R15: 0000000000000005
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
__kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:607 [inline]
kzalloc include/linux/slab.h:738 [inline]
mpls_add_dev net/mpls/af_mpls.c:1459 [inline]
mpls_dev_notify+0x100/0x780 net/mpls/af_mpls.c:1621
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
call_netdevice_notifiers_extack net/core/dev.c:2074 [inline]
call_netdevice_notifiers net/core/dev.c:2088 [inline]
register_netdevice+0x12a6/0x1710 net/core/dev.c:10454
__ip_tunnel_create+0x2c7/0x390 net/ipv4/ip_tunnel.c:267
ip_tunnel_init_net+0x246/0x6f0 net/ipv4/ip_tunnel.c:1084
ops_init+0x357/0x600 net/core/net_namespace.c:138
setup_net+0x39e/0xa10 net/core/net_namespace.c:333
copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
copy_process+0x1834/0x3e20 kernel/fork.c:2293
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: 0033:0x7f92b0628e59
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:00007f92ae83ffd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f92b08a2180 RCX: 00007f92b0628e59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000640c7000
RBP: 00007f92b06bed6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f92b08a2218 R14: 00007f92b08a2180 R15: 00007ffdd997b708
----------------
Code disassembly (best guess):
0: 44 89 f9 mov %r15d,%ecx
3: 80 e1 07 and $0x7,%cl
6: 38 c1 cmp %al,%cl
8: 0f 8c e0 01 00 00 jl 0x1ee
e: be 02 00 00 00 mov $0x2,%esi
13: 48 89 7c 24 08 mov %rdi,0x8(%rsp)
18: 4c 89 ff mov %r15,%rdi
1b: e8 5f 2e 89 00 call 0x892e7f
20: e9 fd 14 00 00 jmp 0x1522
25: 48 8b 44 24 40 mov 0x40(%rsp),%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 4c 8b 74 24 38 mov 0x38(%rsp),%r14
34: 74 0c je 0x42
36: 4c 89 f7 mov %r14,%rdi
39: e8 81 2d 89 00 call 0x892dbf
3e: 48 rex.W
3f: 8b .byte 0x8b