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: 15302 Comm: syz.0.3655 Not tainted 5.15.182-syzkaller-00462-g57725b368731 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:inherit_group kernel/events/core.c:13246 [inline] RIP: 0010:inherit_task_group+0x689/0x770 kernel/events/core.c:13293 Code: c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 8d 00 00 00 41 8b 1e 49 81 c4 8c 00 00 00 4c 89 e0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 8d 00 00 00 41 89 1c 24 e9 ce fa ff ff RSP: 0018:ffffc900011b79e0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000001 RCX: ffff88811cd98000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffc900011b7900 RBP: ffffc900011b7a50 R08: dffffc0000000000 R09: fffff52000236f21 R10: fffff52000236f21 R11: 1ffff92000236f20 R12: 000000000000008c R13: dffffc0000000000 R14: ffff88811f55851c R15: ffff888112460920 FS: 00007f2d120316c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555c0b44a8 CR3: 000000011e946000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_event_init_context kernel/events/core.c:13362 [inline] perf_event_init_task+0x263/0x4c0 kernel/events/core.c:13415 copy_process+0x101f/0x3250 kernel/fork.c:2237 kernel_clone+0x23f/0x940 kernel/fork.c:2661 __do_sys_clone kernel/fork.c:2787 [inline] __se_sys_clone kernel/fork.c:2771 [inline] __x64_sys_clone+0x176/0x1d0 kernel/fork.c:2771 x64_sys_call+0x41f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f2d125c0969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2d12030fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f2d127e7fa0 RCX: 00007f2d125c0969 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000200400 RBP: 00007f2d12642ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2d127e7fa0 R15: 00007ffd9679fcc8 Modules linked in: ---[ end trace b4c54727c367b02b ]--- RIP: 0010:inherit_group kernel/events/core.c:13246 [inline] RIP: 0010:inherit_task_group+0x689/0x770 kernel/events/core.c:13293 Code: c6 8c 00 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 8d 00 00 00 41 8b 1e 49 81 c4 8c 00 00 00 4c 89 e0 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 8d 00 00 00 41 89 1c 24 e9 ce fa ff ff RSP: 0018:ffffc900011b79e0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000001 RCX: ffff88811cd98000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffc900011b7900 RBP: ffffc900011b7a50 R08: dffffc0000000000 R09: fffff52000236f21 R10: fffff52000236f21 R11: 1ffff92000236f20 R12: 000000000000008c R13: dffffc0000000000 R14: ffff88811f55851c R15: ffff888112460920 FS: 00007f2d120316c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe830720bac CR3: 000000011e946000 CR4: 00000000003506b0 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 f0 mov %r14,%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 8d 00 00 00 jne 0xa5 18: 41 8b 1e mov (%r14),%ebx 1b: 49 81 c4 8c 00 00 00 add $0x8c,%r12 22: 4c 89 e0 mov %r12,%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 8d 00 00 00 jne 0xc3 36: 41 89 1c 24 mov %ebx,(%r12) 3a: e9 ce fa ff ff jmp 0xfffffb0d