general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 1 PID: 24212 Comm: syz-executor.4 Tainted: G W 5.10.209-syzkaller-00435-gdd976ecce2ce #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:inherit_group kernel/events/core.c:12865 [inline] RIP: 0010:inherit_task_group+0x573/0x670 kernel/events/core.c:12909 Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 a8 00 00 00 8b 1b 49 81 c7 8c 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a8 00 00 00 41 89 1f 45 31 ff 44 89 f8 RSP: 0018:ffffc90000d879a8 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000001 RCX: ffff88813beb4f00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813a596238 RBP: ffffc90000d87a10 R08: dffffc0000000000 R09: ffffed10274b2c48 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888155b83000 R13: dffffc0000000000 R14: ffff8881150e4010 R15: 000000000000008c FS: 00007f362077b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcbf5521988 CR3: 000000010cf9b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_event_init_context kernel/events/core.c:12976 [inline] perf_event_init_task+0x331/0x770 kernel/events/core.c:13028 copy_process+0x1015/0x3340 kernel/fork.c:2157 kernel_clone+0x21e/0x9e0 kernel/fork.c:2574 __do_sys_clone kernel/fork.c:2700 [inline] __se_sys_clone kernel/fork.c:2684 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2684 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f36219f9da9 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:00007f362077b078 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f3621b27f80 RCX: 00007f36219f9da9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f3621a4647a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f3621b27f80 R15: 00007ffc1642e508 Modules linked in: ---[ end trace bc6dc9661cfbc553 ]--- RIP: 0010:inherit_group kernel/events/core.c:12865 [inline] RIP: 0010:inherit_task_group+0x573/0x670 kernel/events/core.c:12909 Code: 81 c3 8c 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 a8 00 00 00 8b 1b 49 81 c7 8c 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a8 00 00 00 41 89 1f 45 31 ff 44 89 f8 RSP: 0018:ffffc90000d879a8 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000001 RCX: ffff88813beb4f00 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88813a596238 RBP: ffffc90000d87a10 R08: dffffc0000000000 R09: ffffed10274b2c48 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888155b83000 R13: dffffc0000000000 R14: ffff8881150e4010 R15: 000000000000008c FS: 00007f362077b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001480 CR3: 000000010cf9b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- 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 28 movzbl (%rax,%r13,1),%eax 12: 84 c0 test %al,%al 14: 0f 85 a8 00 00 00 jne 0xc2 1a: 8b 1b mov (%rbx),%ebx 1c: 49 81 c7 8c 00 00 00 add $0x8c,%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 a8 00 00 00 jne 0xdf 37: 41 89 1f mov %ebx,(%r15) 3a: 45 31 ff xor %r15d,%r15d 3d: 44 89 f8 mov %r15d,%eax