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: 418 Comm: syz-executor.0 Not tainted 5.15.160-syzkaller-1074716-ge6fb3b0fa87f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:inherit_group kernel/events/core.c:13228 [inline] RIP: 0010:inherit_task_group+0x690/0x790 kernel/events/core.c:13275 Code: 8c 00 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 a0 00 00 00 41 8b 5d 00 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 9f 00 00 00 41 89 1e e9 7d fa ff ff e8 RSP: 0018:ffffc90000f17968 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff8881232ee2c0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88812309c520 RBP: ffffc90000f179d0 R08: dffffc0000000000 R09: ffffed103ee07182 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000f17aa0 R13: ffff88812309c51c R14: 000000000000008c R15: dffffc0000000000 FS: 00007f882fe776c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556dc0788 CR3: 0000000123374000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_event_init_context kernel/events/core.c:13344 [inline] perf_event_init_task+0x34d/0x7a0 kernel/events/core.c:13397 copy_process+0xfdf/0x3290 kernel/fork.c:2238 kernel_clone+0x21e/0x9e0 kernel/fork.c:2662 __do_sys_clone kernel/fork.c:2788 [inline] __se_sys_clone kernel/fork.c:2772 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2772 x64_sys_call+0x1b0/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8830316da9 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:00007f882fe77078 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f8830445050 RCX: 00007f8830316da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000002400 RBP: 00007f883036347a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8830445050 R15: 00007fff12cdb3a8 Modules linked in: ---[ end trace 4ba2df8a671c2507 ]--- RIP: 0010:inherit_group kernel/events/core.c:13228 [inline] RIP: 0010:inherit_task_group+0x690/0x790 kernel/events/core.c:13275 Code: 8c 00 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 a0 00 00 00 41 8b 5d 00 49 81 c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 9f 00 00 00 41 89 1e e9 7d fa ff ff e8 RSP: 0018:ffffc90000f17968 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff8881232ee2c0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88812309c520 RBP: ffffc90000f179d0 R08: dffffc0000000000 R09: ffffed103ee07182 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000f17aa0 R13: ffff88812309c51c R14: 000000000000008c R15: dffffc0000000000 FS: 00007f882fe776c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f88303a1d47 CR3: 0000000123374000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8c 00 mov %es,(%rax) 2: 00 00 add %al,(%rax) 4: 4c 89 e8 mov %r13,%rax 7: 48 c1 e8 03 shr $0x3,%rax b: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax 10: 84 c0 test %al,%al 12: 0f 85 a0 00 00 00 jne 0xb8 18: 41 8b 5d 00 mov 0x0(%r13),%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 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 9f 00 00 00 jne 0xd6 37: 41 89 1e mov %ebx,(%r14) 3a: e9 7d fa ff ff jmp 0xfffffabc 3f: e8 .byte 0xe8