------------[ cut here ]------------
WARNING: CPU: 0 PID: 10471 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 10471 Comm: syz.3.1252 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d 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 c0 f3 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:ffffc90000007d30 EFLAGS: 00010006
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff8880292c3b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1005258771
R10: ffffed1005258771 R11: 1ffff11005258770 R12: ffff8880292c5308
R13: 00007ffffffff000 R14: ffffc90000007da8 R15: 0000000020000000
FS: 00007f9b182c46c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b1a0dfe41 CR3: 00000000680bf000 CR4: 00000000003506f0
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_2c2e2930f3e7254b+0x5e/0xb0
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_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
flush_tlb_func+0x43f/0x510 arch/x86/mm/tlb.c:855
flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
__sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:__htab_lru_percpu_map_update_elem+0x47/0x800 kernel/bpf/hashtab.c:1276
Code: 89 ff e8 dc b9 e9 ff bf 02 00 00 00 4c 89 f6 e8 af bd e9 ff 4c 89 74 24 50 49 83 fe 03 0f 83 fa 05 00 00 e8 fb ed d4 ff 89 c5 <31> ff 89 c6 e8 10 bd e9 ff 85 ed 4c 89 64 24 40 89 5c 24 24 74 07
RSP: 0018:ffffc9000311faf0 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 4d59b52265c56800
RDX: 0000000000000002 RSI: ffffffff8a0b2ac0 RDI: ffffffff8a59a480
RBP: 0000000000000001 R08: 0000000000000001 R09: fffffbfff1ff7819
R10: fffffbfff1ff7819 R11: 1ffffffff1ff7818 R12: ffff888024962120
R13: ffff888077274818 R14: 0000000000000000 R15: ffff888077274800
bpf_percpu_hash_update+0xf5/0x1d0 kernel/bpf/hashtab.c:2240
bpf_map_update_value+0x25e/0x650 kernel/bpf/syscall.c:198
generic_map_update_batch+0x525/0x7c0 kernel/bpf/syscall.c:1430
bpf_map_do_batch+0x466/0x600 kernel/bpf/syscall.c:-1
__sys_bpf+0x601/0x670 kernel/bpf/syscall.c:-1
__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: 0033:0x7f9b1a05cc29
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:00007f9b182c4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9b1a2a3fa0 RCX: 00007f9b1a05cc29
RDX: 0000000000000038 RSI: 0000200000000240 RDI: 000000000000001a
RBP: 00007f9b1a0dfe41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b1a2a4038 R14: 00007f9b1a2a3fa0 R15: 00007ffc83a93278
----------------
Code disassembly (best guess):
0: 89 ff mov %edi,%edi
2: e8 dc b9 e9 ff call 0xffe9b9e3
7: bf 02 00 00 00 mov $0x2,%edi
c: 4c 89 f6 mov %r14,%rsi
f: e8 af bd e9 ff call 0xffe9bdc3
14: 4c 89 74 24 50 mov %r14,0x50(%rsp)
19: 49 83 fe 03 cmp $0x3,%r14
1d: 0f 83 fa 05 00 00 jae 0x61d
23: e8 fb ed d4 ff call 0xffd4ee23
28: 89 c5 mov %eax,%ebp
* 2a: 31 ff xor %edi,%edi <-- trapping instruction
2c: 89 c6 mov %eax,%esi
2e: e8 10 bd e9 ff call 0xffe9bd43
33: 85 ed test %ebp,%ebp
35: 4c 89 64 24 40 mov %r12,0x40(%rsp)
3a: 89 5c 24 24 mov %ebx,0x24(%rsp)
3e: 74 07 je 0x47