general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 0 PID: 3656 Comm: syz-executor.5 Not tainted 5.15.137-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:inherit_group kernel/events/core.c:13280 [inline] RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327 Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8 RSP: 0018:ffffc900035af8f0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888022221dc0 RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe6f610 RBP: ffff88813fe6f590 R08: dffffc0000000000 R09: fffffbfff1f79a41 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888021f41dc0 R14: 000000000000008c R15: ffff88813fe6f590 FS: 00007f05f0aae6c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f05f0a8dd58 CR3: 000000001a5d7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_event_init_context kernel/events/core.c:13396 [inline] perf_event_init_task+0x355/0x7a0 kernel/events/core.c:13449 copy_process+0x1570/0x3ef0 kernel/fork.c:2180 kernel_clone+0x210/0x960 kernel/fork.c:2604 __do_sys_clone kernel/fork.c:2721 [inline] __se_sys_clone kernel/fork.c:2705 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f05f174dae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f05f0aae078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f05f186d050 RCX: 00007f05f174dae9 RDX: 0000000000000000 RSI: 0000000001000000 RDI: 00000000c0920400 RBP: 00007f05f179947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 000000000000006e R14: 00007f05f186d050 R15: 00007ffd2c93dcc8 Modules linked in: ---[ end trace 1e3d01613877a0ab ]--- RIP: 0010:inherit_group kernel/events/core.c:13280 [inline] RIP: 0010:inherit_task_group+0x276/0x710 kernel/events/core.c:13327 Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 3a 04 00 00 8b 1b 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 3a 04 00 00 41 89 1e e9 98 fe ff ff e8 RSP: 0018:ffffc900035af8f0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff888022221dc0 RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88813fe6f610 RBP: ffff88813fe6f590 R08: dffffc0000000000 R09: fffffbfff1f79a41 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888021f41dc0 R14: 000000000000008c R15: ffff88813fe6f590 FS: 00007f05f0aae6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555659f938 CR3: 000000001a5d7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 81 c3 8c 00 00 00 add $0x8c,%ebx 6: 48 89 d8 mov %rbx,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax 12: 84 c0 test %al,%al 14: 0f 85 3a 04 00 00 jne 0x454 1a: 8b 1b mov (%rbx),%ebx 1c: 49 81 c6 8c 00 00 00 add $0x8c,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 3a 04 00 00 jne 0x471 37: 41 89 1e mov %ebx,(%r14) 3a: e9 98 fe ff ff jmp 0xfffffed7 3f: e8 .byte 0xe8