general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 1 PID: 7424 Comm: syz.0.47985 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 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 9b 5c 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 79 5c 1a 00 bb 70 02 00 00 49 03 RSP: 0018:ffffc90001a3f520 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 1ffff1102457b079 RCX: 2ea55b0575eab000 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc90001a3f608 R08: ffff8881f7152fb7 R09: 1ffff1103ee2a5f6 R10: dffffc0000000000 R11: ffffed103ee2a5f7 R12: 0000000000000000 R13: 0000000000000020 R14: 1ffff92000347eac R15: dffffc0000000000 FS: 00007f010ae696c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f010ae68c40 CR3: 0000000135b48000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __perf_event_overflow+0x19d/0x350 kernel/events/core.c:9086 perf_swevent_overflow kernel/events/core.c:9162 [inline] perf_swevent_event+0x2f5/0x540 kernel/events/core.c:-1 do_perf_sw_event kernel/events/core.c:9303 [inline] ___perf_sw_event+0x394/0x4c0 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+0xdfb/0xe20 arch/x86/mm/fault.c:1236 handle_page_fault arch/x86/mm/fault.c:1436 [inline] exc_page_fault+0x5a/0xc0 arch/x86/mm/fault.c:1492 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0010:__put_user_nocheck_1+0x3/0x11 Code: 09 e8 a2 de 05 ff ff c3 eb eb e8 99 de 05 ff 89 d8 5b 41 5e 41 5f 5d c3 48 bb 00 f0 ff ff ff 7f 00 00 48 39 d9 73 74 0f 01 cb <88> 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 48 bb ff ef ff ff ff 7f RSP: 0018:ffffc90001a3fb38 EFLAGS: 00050246 RAX: 0000000000000000 RBX: 0000000000000340 RCX: 00007f010ae68c40 RDX: ffff88813c554f00 RSI: 0000000000000340 RDI: 0000000000000000 RBP: ffffc90001a3fcf0 R08: ffff88813c554f07 R09: 1ffff110278aa9e0 R10: dffffc0000000000 R11: ffffed10278aa9e1 R12: 00007f010ae69c40 R13: 00000000ffffffff R14: 00007f010ae68c40 R15: 00007f010ae68f7f get_sigframe arch/x86/kernel/signal.c:290 [inline] __setup_rt_frame arch/x86/kernel/signal.c:466 [inline] setup_rt_frame arch/x86/kernel/signal.c:718 [inline] handle_signal arch/x86/kernel/signal.c:762 [inline] arch_do_signal_or_restart+0x600/0x11b0 arch/x86/kernel/signal.c:807 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f010c4100d9 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:00007f010ae69028 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: 0000000000000000 RBX: 00007f010c697fa0 RCX: 00007f010c4100d9 RDX: 0000000000000000 RSI: 0000200000000400 RDI: 000000000000000c RBP: 00007f010c4a7024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f010c698038 R14: 00007f010c697fa0 R15: 00007fffc9b5e638 Modules linked in: ---[ end trace 79383c807a656fd9 ]--- 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 9b 5c 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 79 5c 1a 00 bb 70 02 00 00 49 03 RSP: 0018:ffffc90001a3f520 EFLAGS: 00010202 RAX: 0000000000000004 RBX: 1ffff1102457b079 RCX: 2ea55b0575eab000 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc90001a3f608 R08: ffff8881f7152fb7 R09: 1ffff1103ee2a5f6 R10: dffffc0000000000 R11: ffffed103ee2a5f7 R12: 0000000000000000 R13: 0000000000000020 R14: 1ffff92000347eac R15: dffffc0000000000 FS: 00007f010ae696c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f010ae68c40 CR3: 0000000135b48000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 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 9b 5c 1a 00 call 0x1a5cb2 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 79 5c 1a 00 call 0x1a5cb2 39: bb 70 02 00 00 mov $0x270,%ebx 3e: 49 rex.WB 3f: 03 .byte 0x3