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: 6572 Comm: syz-executor.1 Not tainted 6.6.0-rc7-syzkaller-00151-g56567a20b22b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:inherit_group kernel/events/core.c:13375 [inline] RIP: 0010:inherit_task_group+0x725/0x830 kernel/events/core.c:13422 Code: c7 8c 00 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 b8 00 00 00 41 8b 2f 48 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 b8 00 00 00 89 2b e9 c7 f9 ff ff e8 02 RSP: 0018:ffffc9000ccf78f0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 000000000000008c RCX: ffff88807cab1dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807ccb98b0 RBP: 0000000000000000 R08: ffffffff81bac43d R09: 1ffffffff20db495 R10: dffffc0000000000 R11: fffffbfff20db496 R12: ffff88807d825940 R13: dffffc0000000000 R14: ffffc9000ccf7a00 R15: ffff88807ccb98ac FS: 00007f6c9b6806c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6c9b680fe8 CR3: 0000000061aca000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_event_init_context kernel/events/core.c:13487 [inline] perf_event_init_task+0x39e/0x7a0 kernel/events/core.c:13538 copy_process+0x1706/0x41a0 kernel/fork.c:2475 kernel_clone+0x219/0x8c0 kernel/fork.c:2909 __do_sys_clone kernel/fork.c:3052 [inline] __se_sys_clone kernel/fork.c:3036 [inline] __x64_sys_clone+0x254/0x2a0 kernel/fork.c:3036 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+0x63/0xcd RIP: 0033:0x7f6c9a87cae9 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:00007f6c9b680078 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f6c9a99bf80 RCX: 00007f6c9a87cae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f6c9a8c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6c9a99bf80 R15: 00007ffe58b4b5c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:inherit_group kernel/events/core.c:13375 [inline] RIP: 0010:inherit_task_group+0x725/0x830 kernel/events/core.c:13422 Code: c7 8c 00 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 b8 00 00 00 41 8b 2f 48 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 b8 00 00 00 89 2b e9 c7 f9 ff ff e8 02 RSP: 0018:ffffc9000ccf78f0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 000000000000008c RCX: ffff88807cab1dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807ccb98b0 RBP: 0000000000000000 R08: ffffffff81bac43d R09: 1ffffffff20db495 R10: dffffc0000000000 R11: fffffbfff20db496 R12: ffff88807d825940 R13: dffffc0000000000 R14: ffffc9000ccf7a00 R15: ffff88807ccb98ac FS: 00007f6c9b6806c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2d74ea7e90 CR3: 0000000061aca000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 8c 00 mov %es,(%rax) 2: 00 00 add %al,(%rax) 4: 4c 89 f8 mov %r15,%rax 7: 48 c1 e8 03 shr $0x3,%rax b: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax 10: 84 c0 test %al,%al 12: 0f 85 b8 00 00 00 jne 0xd0 18: 41 8b 2f mov (%r15),%ebp 1b: 48 81 c3 8c 00 00 00 add $0x8c,%rbx 22: 48 89 d8 mov %rbx,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 b8 00 00 00 jne 0xee 36: 89 2b mov %ebp,(%rbx) 38: e9 c7 f9 ff ff jmp 0xfffffa04 3d: e8 .byte 0xe8 3e: 02 .byte 0x2