Oops: general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 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:is_same_group kernel/sched/fair.c:411 [inline] RIP: 0010:find_matching_se kernel/sched/fair.c:448 [inline] RIP: 0010:check_preempt_wakeup_fair+0x471/0xb00 kernel/sched/fair.c:8679 Code: 00 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 40 d3 95 00 4d 8b 3f 49 8d ae a0 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 20 d3 95 00 48 8b 5d 00 49 8d af RSP: 0000:ffffc90000a18aa0 EFLAGS: 00010006 RAX: 0000000000000014 RBX: ffff8880b913eb80 RCX: ffffffff81670ea8 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88802062da00 RBP: 00000000000000a0 R08: ffff88802062da07 R09: 1ffff110040c5b40 R10: dffffc0000000000 R11: ffffed10040c5b41 R12: ffff8880b903eac0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43074e5000 CR3: 0000000074bd4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wakeup_preempt+0xd8/0x2a0 kernel/sched/core.c:2128 ttwu_do_activate+0x1f8/0x7e0 kernel/sched/core.c:3666 ttwu_queue kernel/sched/core.c:3940 [inline] try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266 swake_up_locked kernel/sched/swait.c:29 [inline] complete_with_flags kernel/sched/completion.c:24 [inline] complete+0xac/0x1c0 kernel/sched/completion.c:47 random_recv_done+0x138/0x1e0 drivers/char/hw_random/virtio-rng.c:48 vring_interrupt+0x21d/0x380 drivers/virtio/virtio_ring.c:2595 __handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285 common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112 Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d8 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 55 ff a9 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 RSP: 0000:ffffc900001a7d08 EFLAGS: 00000246 RAX: ffff8880182e8000 RBX: ffff88801cac0064 RCX: 000000000004b151 RDX: 0000000000000001 RSI: ffff88801cac0000 RDI: ffff88801cac0064 RBP: 000000000003a778 R08: ffff8880b9137c7b R09: 1ffff11017226f8f R10: dffffc0000000000 R11: ffffffff8bc03f40 R12: ffff888146eea800 R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f11dbe0 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702 cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:264 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:230 [inline] do_idle+0x375/0x5d0 kernel/sched/idle.c:326 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424 start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:313 common_startup_64+0x13e/0x147 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:is_same_group kernel/sched/fair.c:411 [inline] RIP: 0010:find_matching_se kernel/sched/fair.c:448 [inline] RIP: 0010:check_preempt_wakeup_fair+0x471/0xb00 kernel/sched/fair.c:8679 Code: 00 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 40 d3 95 00 4d 8b 3f 49 8d ae a0 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 20 d3 95 00 48 8b 5d 00 49 8d af RSP: 0000:ffffc90000a18aa0 EFLAGS: 00010006 RAX: 0000000000000014 RBX: ffff8880b913eb80 RCX: ffffffff81670ea8 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88802062da00 RBP: 00000000000000a0 R08: ffff88802062da07 R09: 1ffff110040c5b40 R10: dffffc0000000000 R11: ffffed10040c5b41 R12: ffff8880b903eac0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43074e5000 CR3: 0000000074bd4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 4c 89 f8 add %cl,-0x8(%rcx,%rcx,4) 6: 48 c1 e8 03 shr $0x3,%rax a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) f: 74 08 je 0x19 11: 4c 89 ff mov %r15,%rdi 14: e8 40 d3 95 00 call 0x95d359 19: 4d 8b 3f mov (%r15),%r15 1c: 49 8d ae a0 00 00 00 lea 0xa0(%r14),%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 20 d3 95 00 call 0x95d359 39: 48 8b 5d 00 mov 0x0(%rbp),%rbx 3d: 49 rex.WB 3e: 8d .byte 0x8d 3f: af scas %es:(%rdi),%eax