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AJvYcCXz6dE0PzOO4iwh63RW8hwxacIdQkLjB+6NUnEHfsYvx0bUZ24BC9j/6B91kEF/MsL+UarlMI5coAIJmoU=@vger.kernel.org X-Gm-Message-State: AOJu0YxWX/1mVskARRP0h2+dm7w97vHv/SnDAYTA69N2ApshLCLAjz1b vZ5+tSR7An6EsSL/Z6b0WNWrqitm3LdsOmX6oTjADBlSQ7UvH0GqtCSjP1rqbzi9Ar/mKiR3tif voqdKDFu3oCQYRXQt1ubHMcQD1Hr94xoOm4BoQNwCotEsiNCR9v3R0YhnB8Y= X-Google-Smtp-Source: AGHT+IHIuN7qUsMP86x2VKZjULaBh7wkoirrYbgBxwnMyVJUmf7oqT6f2jRoeMA4TQm/H0ujwyHO6bWCqAYBForF7STF3/GdKcBG Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:2d83:b0:881:72ca:57f with SMTP id ca18e2360f4ac-883f1251bebmr1295983639f.10.1754790902318; Sat, 09 Aug 2025 18:55:02 -0700 (PDT) Date: Sat, 09 Aug 2025 18:55:02 -0700 In-Reply-To: <20250810013557.4116-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6897fbf6.050a0220.51d73.0084.GAE@google.com> Subject: Re: [syzbot] [mm?] WARNING in try_to_migrate_one (3) 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 try_to_migrate_one vms_complete_munmap_vmas+0x206/0x8a0 mm/vma.c:1277 do_vmi_align_munmap+0x358/0x420 mm/vma.c:1536 do_vmi_munmap+0x253/0x2e0 mm/vma.c:1584 __vm_munmap+0x23b/0x3d0 mm/vma.c:3155 __do_sys_munmap mm/mmap.c:1080 [inline] __se_sys_munmap mm/mmap.c:1077 [inline] __x64_sys_munmap+0x60/0x70 mm/mmap.c:1077 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6686 at mm/rmap.c:2453 try_to_migrate_one+0xf99/0x3540 mm/rmap.c:2452 Modules linked in: CPU: 0 UID: 0 PID: 6686 Comm: syz.0.17 Not tainted 6.16.0-syzkaller-12256-g561c80369df0-dirty #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:try_to_migrate_one+0xf99/0x3540 mm/rmap.c:2452 Code: 00 e8 cb 3f ae ff 49 be 00 00 00 00 00 fc ff df e9 f2 f7 ff ff e8 b7 3f ae ff 4c 89 ff 48 c7 c6 00 79 96 8b e8 08 90 16 ff 90 <0f> 0b 90 e9 52 ff ff ff e8 9a 3f ae ff 49 ff cf e9 bb f8 ff ff e8 RSP: 0018:ffffc90003ddf120 EFLAGS: 00010246 RAX: 9446046ff81e8900 RBX: 0400000000000000 RCX: 9446046ff81e8900 RDX: 0000000000000003 RSI: ffffffff8dba5fb3 RDI: ffff88805cd51e00 RBP: ffffc90003ddf370 R08: ffffc90003ddeae7 R09: 1ffff920007bbd5c R10: dffffc0000000000 R11: fffff520007bbd5d R12: ffffea0001988018 R13: 0000000066203867 R14: dffffc0000000000 R15: ffffea0001988000 FS: 00007fe5b6a1b6c0(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000012c0 CR3: 000000005c8a8000 CR4: 00000000003526f0 Call Trace: rmap_walk_anon+0x550/0x730 mm/rmap.c:2843 rmap_walk_locked mm/rmap.c:2959 [inline] try_to_migrate+0x3f5/0x670 mm/rmap.c:2620 unmap_folio+0x191/0x1f0 mm/huge_memory.c:3137 __folio_split+0x90d/0x1c60 mm/huge_memory.c:3711 try_split_folio+0x13f/0x310 mm/migrate.c:1550 migrate_pages_batch+0x653/0x3620 mm/migrate.c:1819 migrate_pages_sync mm/migrate.c:1974 [inline] migrate_pages+0x1bcc/0x2930 mm/migrate.c:2083 do_mbind mm/mempolicy.c:1539 [inline] kernel_mbind mm/mempolicy.c:1682 [inline] __do_sys_mbind mm/mempolicy.c:1756 [inline] __se_sys_mbind+0xa3e/0xc30 mm/mempolicy.c:1752 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe5b5b8ebe9 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:00007fe5b6a1b038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed RAX: ffffffffffffffda RBX: 00007fe5b5db5fa0 RCX: 00007fe5b5b8ebe9 RDX: 0000000000000001 RSI: 0000000000600000 RDI: 0000200000000000 RBP: 00007fe5b5c11e19 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe5b5db6038 R14: 00007fe5b5db5fa0 R15: 00007ffc7a58f7a8 Tested on: commit: 561c8036 Merge tag 'tty-6.16-rc1-2' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=167fd434580000 kernel config: https://syzkaller.appspot.com/x/.config?x=2ae1da3a7f4a6ba4 dashboard link: https://syzkaller.appspot.com/bug?extid=63859a31071a369082b1 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 patch: https://syzkaller.appspot.com/x/patch.diff?x=17cefea2580000