Oops: general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057] CPU: 1 UID: 0 PID: 5229 Comm: syz-executor Not tainted 6.11.0-rc5-next-20240827-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:pick_next_entity kernel/sched/fair.c:5613 [inline] RIP: 0010:pick_task_fair+0xc3/0x280 kernel/sched/fair.c:8742 Code: 00 00 80 3b 00 74 08 4c 89 ef e8 58 7d 01 00 0f 1f 44 00 00 4c 89 ef e8 6b f8 01 00 49 89 c4 48 8d 58 51 48 89 d8 48 c1 e8 03 <0f> b6 04 28 84 c0 75 5e 80 3b 00 74 2e 48 8b 3c 24 4c 89 e6 ba 01 RSP: 0018:ffffc900015f74d8 EFLAGS: 00010006 RAX: 000000000000000a RBX: 0000000000000051 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: dffffc0000000000 RDI: ffff88807723d858 RBP: dffffc0000000000 R08: ffffffff901c362f R09: 1ffffffff20386c5 R10: dffffc0000000000 R11: ffffffff81666260 R12: 0000000000000000 R13: ffff88807723d800 R14: ffff8880b913eb90 R15: 1ffff11017227d72 FS: 0000555580982500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32804ff8 CR3: 0000000067412000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pick_task kernel/sched/core.c:6028 [inline] pick_next_task kernel/sched/core.c:6130 [inline] __schedule+0x2eab/0x4b30 kernel/sched/core.c:6632 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6999 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__is_vma_write_locked include/linux/mm.h:725 [inline] RIP: 0010:vma_start_write include/linux/mm.h:744 [inline] RIP: 0010:dup_mmap kernel/fork.c:670 [inline] RIP: 0010:dup_mm kernel/fork.c:1674 [inline] RIP: 0010:copy_mm+0x85f/0x1f40 kernel/fork.c:1723 Code: 00 00 48 89 5c 24 10 4c 8d 73 10 8b 1d b6 42 c7 0e 31 ff 89 de e8 c1 ee 3e 00 85 db 74 42 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 f7 e8 c7 c1 a7 00 49 8b 3e b8 98 01 00 00 48 01 c7 31 RSP: 0018:ffffc900015f78a0 EFLAGS: 00000246 RAX: 1ffff110055a9421 RBX: 0000000000000001 RCX: ffff888019361e00 RDX: ffff888019361e00 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900015f7a70 R08: ffffffff815523df R09: ffffffff8bb4fb67 R10: 0000000000000004 R11: ffff888019361e00 R12: ffff888027cb4280 R13: dffffc0000000000 R14: ffff88802ad4a108 R15: ffff88801f35d580 copy_process+0x1845/0x3d50 kernel/fork.c:2372 kernel_clone+0x226/0x8f0 kernel/fork.c:2784 __do_sys_clone kernel/fork.c:2927 [inline] __se_sys_clone kernel/fork.c:2911 [inline] __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2911 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3a3e3706d3 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffd51a965f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3a3e3706d3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 00005555809827d0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000013251 R14: 0000000000012d83 R15: 00007ffd51a96780 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:pick_next_entity kernel/sched/fair.c:5613 [inline] RIP: 0010:pick_task_fair+0xc3/0x280 kernel/sched/fair.c:8742 Code: 00 00 80 3b 00 74 08 4c 89 ef e8 58 7d 01 00 0f 1f 44 00 00 4c 89 ef e8 6b f8 01 00 49 89 c4 48 8d 58 51 48 89 d8 48 c1 e8 03 <0f> b6 04 28 84 c0 75 5e 80 3b 00 74 2e 48 8b 3c 24 4c 89 e6 ba 01 RSP: 0018:ffffc900015f74d8 EFLAGS: 00010006 RAX: 000000000000000a RBX: 0000000000000051 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: dffffc0000000000 RDI: ffff88807723d858 RBP: dffffc0000000000 R08: ffffffff901c362f R09: 1ffffffff20386c5 R10: dffffc0000000000 R11: ffffffff81666260 R12: 0000000000000000 R13: ffff88807723d800 R14: ffff8880b913eb90 R15: 1ffff11017227d72 FS: 0000555580982500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32804ff8 CR3: 0000000067412000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 80 3b 00 cmpb $0x0,(%rbx) 5: 74 08 je 0xf 7: 4c 89 ef mov %r13,%rdi a: e8 58 7d 01 00 call 0x17d67 f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 14: 4c 89 ef mov %r13,%rdi 17: e8 6b f8 01 00 call 0x1f887 1c: 49 89 c4 mov %rax,%r12 1f: 48 8d 58 51 lea 0x51(%rax),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 75 5e jne 0x90 32: 80 3b 00 cmpb $0x0,(%rbx) 35: 74 2e je 0x65 37: 48 8b 3c 24 mov (%rsp),%rdi 3b: 4c 89 e6 mov %r12,%rsi 3e: ba .byte 0xba 3f: 01 .byte 0x1