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: 3891 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:ffffc9000508f850 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff8880793e1dc0 RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88802b11e470 RBP: ffff88802b11e3f0 R08: dffffc0000000000 R09: fffffbfff1f79a42 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888043008000 R14: 000000000000008c R15: ffff88802b11e3f0 FS: 0000555556afc480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f691d158d58 CR3: 000000001afb4000 CR4: 00000000003506e0 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_clone3 kernel/fork.c:2879 [inline] __se_sys_clone3+0x3e1/0x430 kernel/fork.c:2863 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: 0033:0x7f691eca78d9 Code: ff ff eb d2 e8 f8 62 fd ff 0f 1f 84 00 00 00 00 00 b8 ea ff ff ff 48 85 ff 74 2c 48 85 d2 74 27 49 89 c8 b8 b3 01 00 00 0f 05 <48> 85 c0 7c 18 74 01 c3 31 ed 48 83 e4 f0 4c 89 c7 ff d2 48 89 c7 RSP: 002b:00007ffd80fad418 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f691ec4ffb0 RCX: 00007f691eca78d9 RDX: 00007f691ec4ffb0 RSI: 0000000000000058 RDI: 00007ffd80fad460 RBP: 00007f691d1586c0 R08: 00007f691d1586c0 R09: 00007ffd80fad547 R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffb0 R13: 000000000000000b R14: 00007ffd80fad460 R15: 00007ffd80fad548 Modules linked in: ---[ end trace 70a0f00616c29ff7 ]--- 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:ffffc9000508f850 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000000 RCX: ffff8880793e1dc0 RDX: 0000000000000000 RSI: ffffffff8a8b0be0 RDI: ffff88802b11e470 RBP: ffff88802b11e3f0 R08: dffffc0000000000 R09: fffffbfff1f79a42 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888043008000 R14: 000000000000008c R15: ffff88802b11e3f0 FS: 0000555556afc480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f691d158d58 CR3: 000000001afb4000 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