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: 5363 Comm: syz.1.15 Not tainted 6.11.0-rc4-next-20240820-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 a0 27 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 80 27 95 00 48 8b 5d 00 49 8d af RSP: 0018:ffffc90000a18980 EFLAGS: 00010006 RAX: 0000000000000014 RBX: ffff8880b913eb00 RCX: ffffffff81671a28 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888024e99e00 RBP: 00000000000000a0 R08: ffff888024e99e07 R09: 1ffff110049d33c0 R10: dffffc0000000000 R11: ffffed10049d33c1 R12: ffff8880b903ea40 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3270cffc CR3: 0000000022f1a000 CR4: 00000000003526f0 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 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__tlb_remove_folio_pages_size+0xcc/0x590 mm/mmu_gather.c:185 Code: 00 00 e8 77 e0 ac ff 49 8d 6e 08 48 89 e8 48 c1 e8 03 4d 89 e5 42 0f b6 04 20 84 c0 0f 85 6b 03 00 00 4c 0b 7c 24 08 8b 45 00 <8d> 48 01 89 4d 00 89 c0 49 8d 5c c6 10 48 89 d8 48 c1 e8 03 42 80 RSP: 0018:ffffc90004577518 EFLAGS: 00000282 RAX: 00000000000000c2 RBX: ffffc90004577ae8 RCX: ffff8880270b9e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff888066d62008 R08: ffffffff81e6e026 R09: 1ffffd400031e46e R10: dffffc0000000000 R11: fffff9400031e46f R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff888066d62000 R15: ffffea00018f2340 zap_present_folio_ptes mm/memory.c:1522 [inline] zap_present_ptes mm/memory.c:1576 [inline] zap_pte_range mm/memory.c:1618 [inline] zap_pmd_range mm/memory.c:1736 [inline] zap_pud_range mm/memory.c:1765 [inline] zap_p4d_range mm/memory.c:1786 [inline] unmap_page_range+0x1aca/0x40e0 mm/memory.c:1807 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1897 exit_mmap+0x275/0xc40 mm/mmap.c:1921 __mmput+0x115/0x390 kernel/fork.c:1347 exit_mm+0x220/0x310 kernel/exit.c:571 do_exit+0x9b2/0x28e0 kernel/exit.c:926 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232 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: 0033:0x7f8c6a579e79 Code: Unable to access opcode bytes at 0x7f8c6a579e4f. RSP: 002b:00007ffd30631198 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c6a579e79 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffd306311ec R08: 00007ffd3063127f R09: 000000000000f4ac R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000032 R13: 000000000000f4ac R14: 000000000000f398 R15: 00007ffd30631240 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 a0 27 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 80 27 95 00 48 8b 5d 00 49 8d af RSP: 0018:ffffc90000a18980 EFLAGS: 00010006 RAX: 0000000000000014 RBX: ffff8880b913eb00 RCX: ffffffff81671a28 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888024e99e00 RBP: 00000000000000a0 R08: ffff888024e99e07 R09: 1ffff110049d33c0 R10: dffffc0000000000 R11: ffffed10049d33c1 R12: ffff8880b903ea40 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3270cffc CR3: 0000000022f1a000 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: 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 a0 27 95 00 call 0x9527b9 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 80 27 95 00 call 0x9527b9 39: 48 8b 5d 00 mov 0x0(%rbp),%rbx 3d: 49 rex.WB 3e: 8d .byte 0x8d 3f: af scas %es:(%rdi),%eax