general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 PID: 16237 Comm: syz.2.13756 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:bpf_overflow_handler+0x288/0x370 kernel/events/core.c:9862 Code: ff 55 00 41 89 c4 42 80 3c 3b 00 74 0a 48 8b 7c 24 10 e8 db 63 1a 00 48 8b 44 24 10 4c 8b 28 49 83 c5 20 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 ef e8 b9 63 1a 00 bb 70 02 00 00 49 03 RSP: 0000:ffffc90000f779c0 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 1ffff11024df2879 RCX: 0c4a0bd22971b000 RDX: ffffc90006d17000 RSI: 0000000000000085 RDI: 0000000000000086 RBP: ffffc90000f77ac0 R08: ffff8881f7052fb7 R09: 1ffff1103ee0a5f6 R10: dffffc0000000000 R11: ffffed103ee0a5f7 R12: 0000000000000000 R13: 0000000000000020 R14: 1ffff920001eef40 R15: dffffc0000000000 FS: 00007f1078fe46c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1078fe4660 CR3: 0000000113480000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __perf_event_overflow+0x1b3/0x340 kernel/events/core.c:9086 perf_swevent_overflow kernel/events/core.c:9162 [inline] perf_swevent_event+0x2f7/0x530 kernel/events/core.c:-1 do_perf_sw_event kernel/events/core.c:9303 [inline] ___perf_sw_event+0x3aa/0x4d0 kernel/events/core.c:9334 __perf_sw_event+0x134/0x270 kernel/events/core.c:9346 perf_sw_event include/linux/perf_event.h:1179 [inline] do_user_addr_fault+0xc76/0xc90 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: 0033:0x7f107a44f93e Code: 00 00 00 64 f0 83 04 25 a0 ff ff ff 01 64 48 8b 04 25 00 00 00 00 48 8d b8 d8 fe ff ff e8 4a af 0d 00 85 c0 0f 84 a2 01 00 00 <64> f0 83 2c 25 a0 ff ff ff 01 e8 f3 90 0c 00 48 8b 4c 24 08 8b 00 RSP: 002b:00007f1078fe4050 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 00007f107a802fa0 RCX: 00007f107a61fc91 RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000006 RBP: 00007f107a61fc91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f107a803038 R14: 00007f107a802fa0 R15: 00007ffc9d022b88 Modules linked in: ---[ end trace 520d1b22ea14897e ]--- RIP: 0010:bpf_overflow_handler+0x288/0x370 kernel/events/core.c:9862 Code: ff 55 00 41 89 c4 42 80 3c 3b 00 74 0a 48 8b 7c 24 10 e8 db 63 1a 00 48 8b 44 24 10 4c 8b 28 49 83 c5 20 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 ef e8 b9 63 1a 00 bb 70 02 00 00 49 03 RSP: 0000:ffffc90000f779c0 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 1ffff11024df2879 RCX: 0c4a0bd22971b000 RDX: ffffc90006d17000 RSI: 0000000000000085 RDI: 0000000000000086 RBP: ffffc90000f77ac0 R08: ffff8881f7052fb7 R09: 1ffff1103ee0a5f6 R10: dffffc0000000000 R11: ffffed103ee0a5f7 R12: 0000000000000000 R13: 0000000000000020 R14: 1ffff920001eef40 R15: dffffc0000000000 FS: 00007f1078fe46c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1078fe4660 CR3: 0000000113480000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: ff 55 00 call *0x0(%rbp) 3: 41 89 c4 mov %eax,%r12d 6: 42 80 3c 3b 00 cmpb $0x0,(%rbx,%r15,1) b: 74 0a je 0x17 d: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi 12: e8 db 63 1a 00 call 0x1a63f2 17: 48 8b 44 24 10 mov 0x10(%rsp),%rax 1c: 4c 8b 28 mov (%rax),%r13 1f: 49 83 c5 20 add $0x20,%r13 23: 4c 89 e8 mov %r13,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ef mov %r13,%rdi 34: e8 b9 63 1a 00 call 0x1a63f2 39: bb 70 02 00 00 mov $0x270,%ebx 3e: 49 rex.WB 3f: 03 .byte 0x3