Hello, syzbot found the following issue on: HEAD commit: 56e337f2cf13 Revert "gpio: Revert regression in sysfs-gpio.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13821b8d700000 kernel config: https://syzkaller.appspot.com/x/.config?x=d35f9bc6884af6c9 dashboard link: https://syzkaller.appspot.com/bug?extid=6bde52d89cfdf9f61425 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12a2d0a9700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d34fd9700000 The issue was bisected to: commit ed922739c9199bf515a3e7fec3e319ce1edeef2a Author: Maciej S. Szmigiero <maciej.szmigiero@xxxxxxxxxx> Date: Mon Dec 6 19:54:28 2021 +0000 KVM: Use interval tree to do fast hva lookup in memslots bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=142aa59d700000 final oops: https://syzkaller.appspot.com/x/report.txt?x=162aa59d700000 console output: https://syzkaller.appspot.com/x/log.txt?x=122aa59d700000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6bde52d89cfdf9f61425@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: ed922739c919 ("KVM: Use interval tree to do fast hva lookup in memslots") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3599 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:529 __kvm_handle_hva_range arch/x86/kvm/../../../virt/kvm/kvm_main.c:529 [inline] WARNING: CPU: 0 PID: 3599 at arch/x86/kvm/../../../virt/kvm/kvm_main.c:529 kvm_mmu_notifier_invalidate_range_start+0x97a/0xb20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:714 Modules linked in: CPU: 0 PID: 3599 Comm: syz-executor221 Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__kvm_handle_hva_range arch/x86/kvm/../../../virt/kvm/kvm_main.c:529 [inline] RIP: 0010:kvm_mmu_notifier_invalidate_range_start+0x97a/0xb20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:714 Code: 00 48 c7 c2 60 0c a2 89 be b9 01 00 00 48 c7 c7 c0 10 a2 89 c6 05 ed 71 76 0c 01 e8 79 84 ff 07 e9 73 ff ff ff e8 b6 cd 6f 00 <0f> 0b e9 88 fc ff ff e8 aa cd 6f 00 0f 0b e9 58 fc ff ff e8 9e cd RSP: 0018:ffffc90001caf948 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 000000002000d000 RCX: 0000000000000000 RDX: ffff888020d83a00 RSI: ffffffff8108f27a RDI: 0000000000000003 RBP: ffffc90002b76290 R08: 000000002000d000 R09: ffffc90002b762e3 R10: ffffffff8108eb1c R11: 0000000000000001 R12: ffffc90002b7f240 R13: ffffc90002b75000 R14: ffffc90001cafc18 R15: 000000002000d000 FS: 0000555555a55300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000088 CR3: 0000000074ce9000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> mn_hlist_invalidate_range_start mm/mmu_notifier.c:493 [inline] __mmu_notifier_invalidate_range_start+0x2ff/0x800 mm/mmu_notifier.c:548 mmu_notifier_invalidate_range_start include/linux/mmu_notifier.h:459 [inline] move_page_tables+0x2642/0x2d20 mm/mremap.c:498 move_vma+0x48c/0xf40 mm/mremap.c:629 mremap_to mm/mremap.c:862 [inline] __do_sys_mremap+0xf01/0x1560 mm/mremap.c:972 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f11faab5089 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc17608428 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f11faab5089 RDX: 0000000000001000 RSI: fffffffffffffe74 RDI: 000000002000d000 RBP: 00007f11faa79070 R08: 0000000020007000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007f11faa79100 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
