------------[ cut here ]------------
WARNING: CPU: 0 PID: 4810 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 4810 Comm: syz.1.210 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 ab ba d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 94 ba d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000007d00 EFLAGS: 00010006
RAX: ffffffff81aacafc RBX: 0000000000000000 RCX: ffff888020563b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaca0d R09: ffffed100b6a3441
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000007d68
FS: 00007f5a003746c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a00373f98 CR3: 0000000023dd3000 CR4: 00000000003506f0
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_87c4e24aeb87061a+0x5b/0x1e8
bpf_dispatcher_nop_func include/linux/bpf.h:790 [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+0x19e/0x340 kernel/trace/bpf_trace.c:1915
__traceiter_tlb_flush+0x6c/0xc0 include/trace/events/tlb.h:38
trace_tlb_flush+0xed/0x110 include/trace/events/tlb.h:38
flush_tlb_func+0x480/0x590 arch/x86/mm/tlb.c:851
flush_smp_call_function_queue+0x2b5/0x760 kernel/smp.c:628
__sysvec_call_function_single+0x9a/0x250 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:__sanitizer_cov_trace_switch+0x0/0xe0 kernel/kcov.c:306
Code: 39 c8 77 1e 48 c7 44 11 08 07 00 00 00 48 89 7c 11 10 48 89 74 11 18 4c 89 44 11 20 49 ff c2 4c 89 12 c3 0f 1f 80 00 00 00 00 <41> 57 41 56 41 54 53 48 8b 46 08 48 83 c0 f8 48 c1 c0 3d 48 83 f8
RSP: 0018:ffffc9000302fd70 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 000000000000004f RCX: ffffc90003028000
RDX: ffffc90003030000 RSI: ffffffff8cc0faa0 RDI: 0000000000000002
RBP: 0000000000000002 R08: ffffffff81d39765 R09: ffffc9000302fe00
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000050
R13: 0000000000000050 R14: ffffc9000302fe00 R15: 0000000000000000
__check_object_size+0x73/0x410 mm/usercopy.c:269
check_object_size include/linux/thread_info.h:199 [inline]
check_copy_size include/linux/thread_info.h:232 [inline]
copy_from_user include/linux/uaccess.h:191 [inline]
copy_from_bpfptr_offset include/linux/bpfptr.h:52 [inline]
copy_from_bpfptr include/linux/bpfptr.h:58 [inline]
__sys_bpf+0x1c5/0x670 kernel/bpf/syscall.c:4629
__do_sys_bpf kernel/bpf/syscall.c:4760 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4758 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4758
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5a01103169
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:00007f5a00374038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f5a0131bfa0 RCX: 00007f5a01103169
RDX: 0000000000000050 RSI: 0000400000000180 RDI: 0000000000000000
RBP: 00007f5a011842a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5a0131bfa0 R15: 00007ffdaec513d8
----------------
Code disassembly (best guess):
0: 39 c8 cmp %ecx,%eax
2: 77 1e ja 0x22
4: 48 c7 44 11 08 07 00 movq $0x7,0x8(%rcx,%rdx,1)
b: 00 00
d: 48 89 7c 11 10 mov %rdi,0x10(%rcx,%rdx,1)
12: 48 89 74 11 18 mov %rsi,0x18(%rcx,%rdx,1)
17: 4c 89 44 11 20 mov %r8,0x20(%rcx,%rdx,1)
1c: 49 ff c2 inc %r10
1f: 4c 89 12 mov %r10,(%rdx)
22: c3 ret
23: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
* 2a: 41 57 push %r15 <-- trapping instruction
2c: 41 56 push %r14
2e: 41 54 push %r12
30: 53 push %rbx
31: 48 8b 46 08 mov 0x8(%rsi),%rax
35: 48 83 c0 f8 add $0xfffffffffffffff8,%rax
39: 48 c1 c0 3d rol $0x3d,%rax
3d: 48 rex.W
3e: 83 .byte 0x83
3f: f8 clc