general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 1 PID: 568 Comm: syz.6.31 Not tainted 5.10.237-syzkaller-1007464-g7e2543346ff7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:bpf_overflow_handler+0x23e/0x3a0 kernel/events/core.c:9841 Code: d8 20 1a 00 48 8b 44 24 18 4c 8b 28 49 8d 45 38 48 89 44 24 20 49 83 c5 30 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 a4 20 1a 00 4c 89 e7 48 8b 74 24 20 RSP: 0018:ffffc90000fd7600 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 1ffff1102330a679 RCX: dffffc0000000000 RDX: 1ffffffff0d8de08 RSI: 0000000d435afeb6 RDI: ffffffff86c6f040 RBP: ffffc90000fd7700 R08: ffffffff86c6f048 R09: ffffffff86c6f058 R10: ffffffff86c6f05c R11: ffffffff86c6f043 R12: ffffc90000fd7660 R13: 0000000000000030 R14: ffff888119853000 R15: 1ffff920001faec8 FS: 00007f3d3fb656c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000036d000 CR3: 000000010f2ae000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __perf_event_overflow+0x1b3/0x340 kernel/events/core.c:9065 perf_swevent_overflow kernel/events/core.c:9141 [inline] perf_swevent_event+0x2f7/0x530 kernel/events/core.c:-1 do_perf_sw_event kernel/events/core.c:9282 [inline] ___perf_sw_event+0x377/0x470 kernel/events/core.c:9313 __perf_sw_event+0x134/0x270 kernel/events/core.c:9325 perf_sw_event include/linux/perf_event.h:1179 [inline] do_user_addr_fault+0xc6a/0xc80 arch/x86/mm/fault.c:1255 handle_page_fault arch/x86/mm/fault.c:1428 [inline] exc_page_fault+0x5a/0xc0 arch/x86/mm/fault.c:1484 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 90 90 90 90 90 90 90 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 90 90 90 90 90 90 90 90 90 90 89 d1 83 f8 RSP: 0018:ffffc90000fd7c20 EFLAGS: 00050206 RAX: ffffffff823a3a01 RBX: 00000000000009fd RCX: 00000000000003c9 RDX: 00000000000009fd RSI: 000020000036d000 RDI: ffff88810fc88634 RBP: ffffc90000fd7c50 R08: 0000000000000005 R09: 0000000000000004 R10: ffffed1021f9113f R11: 0000000000000138 R12: 00007ffffffff000 R13: 000020000036d3c9 R14: ffff88810fc88000 R15: 000020000036c9cc copy_from_user include/linux/uaccess.h:192 [inline] generic_map_update_batch+0x4a4/0x740 kernel/bpf/syscall.c:1372 bpf_map_do_batch+0x463/0x5f0 kernel/bpf/syscall.c:-1 __do_sys_bpf kernel/bpf/syscall.c:4499 [inline] __se_sys_bpf+0x55a/0x680 kernel/bpf/syscall.c:4391 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:4391 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f3d400f4969 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:00007f3d3fb65038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f3d4031bfa0 RCX: 00007f3d400f4969 RDX: 0000000000000038 RSI: 0000200000000300 RDI: 000000000000001a RBP: 00007f3d40176ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3d4031bfa0 R15: 00007fff1934a988 Modules linked in: ---[ end trace 217aae2d3eddc10c ]--- RIP: 0010:bpf_overflow_handler+0x23e/0x3a0 kernel/events/core.c:9841 Code: d8 20 1a 00 48 8b 44 24 18 4c 8b 28 49 8d 45 38 48 89 44 24 20 49 83 c5 30 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 a4 20 1a 00 4c 89 e7 48 8b 74 24 20 RSP: 0018:ffffc90000fd7600 EFLAGS: 00010206 RAX: 0000000000000006 RBX: 1ffff1102330a679 RCX: dffffc0000000000 RDX: 1ffffffff0d8de08 RSI: 0000000d435afeb6 RDI: ffffffff86c6f040 RBP: ffffc90000fd7700 R08: ffffffff86c6f048 R09: ffffffff86c6f058 R10: ffffffff86c6f05c R11: ffffffff86c6f043 R12: ffffc90000fd7660 R13: 0000000000000030 R14: ffff888119853000 R15: 1ffff920001faec8 FS: 00007f3d3fb656c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000036d000 CR3: 000000010f2ae000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: d8 20 fsubs (%rax) 2: 1a 00 sbb (%rax),%al 4: 48 8b 44 24 18 mov 0x18(%rsp),%rax 9: 4c 8b 28 mov (%rax),%r13 c: 49 8d 45 38 lea 0x38(%r13),%rax 10: 48 89 44 24 20 mov %rax,0x20(%rsp) 15: 49 83 c5 30 add $0x30,%r13 19: 4c 89 e8 mov %r13,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 ef mov %r13,%rdi 33: e8 a4 20 1a 00 call 0x1a20dc 38: 4c 89 e7 mov %r12,%rdi 3b: 48 8b 74 24 20 mov 0x20(%rsp),%rsi