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AJvYcCX+qATdV7S1L6E7vYEzM95+I9wqppJr2Mncr2Vd+0ayeO7JdN+L9tjCfeoYpMQfJO+XLbAVBR1QUyZevk4=@vger.kernel.org X-Gm-Message-State: AOJu0YzUyoGVlt8k66X5UnXyT+QtvPEjhQ852DEe8TPsMdHkPpndnwH0 K+JS+PxVOqxGo2Ajgnrz4b49qTbgHCQ4X4vsti6zbvCozWr4ygfUHwAEnu3P7F9eXzpqsW1OTCs jgE/GzcSf8yembzk9C+ZLCJwtlzGhUZZQ3C36KbD6CIPVIk3tkr9W1AT4VH4= X-Google-Smtp-Source: AGHT+IF7cQqZiSBrQonsgQTMZMGLNNjm13Wroq1uBTRIOJg5hUWlDENbfjnGJ6nSUNPKkZZo/s5wFzjZfliz9tkUlWPdmyFu6/wR Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:827:b0:659:9a49:8f12 with SMTP id 006d021491bc7-65d0e9f40d5mr5443399eaf.35.1766484603198; Tue, 23 Dec 2025 02:10:03 -0800 (PST) Date: Tue, 23 Dec 2025 02:10:03 -0800 In-Reply-To: <20251223094227.1771-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <694a6a7b.050a0220.19928e.001d.GAE@google.com> Subject: Re: [syzbot] [mm?] WARNING in folio_remove_rmap_ptes From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in folio_remove_rmap_ptes arch_do_signal_or_restart+0x8f/0x7e0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline] exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline] do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ WARNING: ./include/linux/rmap.h:462 at __folio_rmap_sanity_checks include/linux/rmap.h:462 [inline], CPU#2: syz.0.18/6397 WARNING: ./include/linux/rmap.h:462 at __folio_remove_rmap mm/rmap.c:1663 [inline], CPU#2: syz.0.18/6397 WARNING: ./include/linux/rmap.h:462 at folio_remove_rmap_ptes+0xc27/0xfb0 mm/rmap.c:1779, CPU#2: syz.0.18/6397 Modules linked in: CPU: 2 UID: 0 PID: 6397 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__folio_rmap_sanity_checks include/linux/rmap.h:462 [inline] RIP: 0010:__folio_remove_rmap mm/rmap.c:1663 [inline] RIP: 0010:folio_remove_rmap_ptes+0xc27/0xfb0 mm/rmap.c:1779 Code: 00 e9 49 f4 ff ff e8 98 2f aa ff e8 d3 4f 17 ff e9 98 fc ff ff e8 89 2f aa ff 48 c7 c6 40 b8 9c 8b 4c 89 e7 e8 7a 0c f5 ff 90 <0f> 0b 90 e9 5a f6 ff ff e8 6c 2f aa ff 48 8b 54 24 10 48 b8 00 00 RSP: 0018:ffffc90003d9f248 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffea0001468040 RCX: ffffc90003d9f12c RDX: ffff888028758000 RSI: ffffffff8214b6f6 RDI: ffff888028758484 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffff888028758b30 R12: ffffea0001468040 R13: ffff88802af7d540 R14: 0000000000000000 R15: ffff888026a0e440 FS: 00007f7003d706c0(0000) GS:ffff8880d6af5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7003d6ff98 CR3: 0000000032cdb000 CR4: 0000000000352ef0 Call Trace: zap_present_folio_ptes mm/memory.c:1650 [inline] zap_present_ptes mm/memory.c:1708 [inline] do_zap_pte_range mm/memory.c:1810 [inline] zap_pte_range mm/memory.c:1854 [inline] zap_pmd_range mm/memory.c:1946 [inline] zap_pud_range mm/memory.c:1975 [inline] zap_p4d_range mm/memory.c:1996 [inline] unmap_page_range+0x1b7d/0x43c0 mm/memory.c:2017 unmap_single_vma+0x153/0x240 mm/memory.c:2059 lock_unmap_vmas+0x30d/0x600 mm/memory.c:2126 vms_clear_ptes+0x419/0x790 mm/vma.c:1231 vms_complete_munmap_vmas+0x186/0x8f0 mm/vma.c:1278 do_vmi_align_munmap+0x446/0x7e0 mm/vma.c:1537 do_vmi_munmap+0x204/0x3e0 mm/vma.c:1585 do_munmap+0xb6/0xf0 mm/mmap.c:1065 mremap_to+0x236/0x450 mm/mremap.c:1378 remap_move mm/mremap.c:1890 [inline] do_mremap+0x13a8/0x2020 mm/mremap.c:1933 __do_sys_mremap+0x119/0x170 mm/mremap.c:1997 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7002f8f7c9 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:00007f7003d70038 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 RAX: ffffffffffffffda RBX: 00007f70031e5fa0 RCX: 00007f7002f8f7c9 RDX: 0000000000004000 RSI: 0000000000004000 RDI: 0000200000ffc000 RBP: 00007f7003013f91 R08: 0000200000002000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f70031e6038 R14: 00007f70031e5fa0 R15: 00007ffc9ec46fc8 Tested on: commit: b9275466 Merge tag 'dma-mapping-6.19-2025-12-22' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1419fb58580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a11e0f726bfb6765 dashboard link: https://syzkaller.appspot.com/bug?extid=b165fc2e11771c66d8ba compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=16508b92580000