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AJvYcCUFoNoBcZxbsZslYExDsOj3WWf8rWaqDAFy52ErhtaBhDzWhzKzBgIuu4oGbGaDDt9rj7R/QvEL2NlbkTw=@vger.kernel.org X-Gm-Message-State: AOJu0Yx0wf+AHUBfsrdJlQKSLcZ8hVz4p73uc/0AnrvBXwOMPAQ4Euud /nMr/x1VnFcMz8S3Ml4nyR60i07nxPkjCLgcjbe/E8R3Fin2BrNgibh3XnUqqH/FNaOeJoHTfiU FUah3bInSdvtNGWQjUPhVQie6jXavpuHpPbId6ytXXXgQ9WiMD7rakO2azy8= X-Google-Smtp-Source: AGHT+IEHzVwxQ+idrbjlPpfSnJ42RVk67+cbnVu56F0ansDNYkV+viWueojAKjIWUsTglqs7rHm0m8C0piTahpr6RzlnJVbfQiVe Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1808:b0:40c:50c:376 with SMTP id e9e14a558f8ab-40c050c05a1mr892635ab.26.1757314460533; Sun, 07 Sep 2025 23:54:20 -0700 (PDT) Date: Sun, 07 Sep 2025 23:54:20 -0700 In-Reply-To: <20250905132019.18915-1-yajun.deng@linux.dev> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68be7d9c.050a0220.192772.0853.GAE@google.com> Subject: [syzbot ci] Re: mm/rmap: make num_children and num_active_vmas update in internally From: syzbot ci To: akpm@linux-foundation.org, david@redhat.com, harry.yoo@oracle.com, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, riel@surriel.com, vbabka@suse.cz, yajun.deng@linux.dev Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v1] mm/rmap: make num_children and num_active_vmas update in internally https://lore.kernel.org/all/20250905132019.18915-1-yajun.deng@linux.dev * [PATCH] mm/rmap: make num_children and num_active_vmas update in internally and found the following issue: WARNING in unlink_anon_vmas Full report is available here: https://ci.syzbot.org/series/8f2c8574-826d-4951-a11c-201f9e6fa666 *** WARNING in unlink_anon_vmas tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux base: b320789d6883cc00ac78ce83bccbfe7ed58afcf0 arch: amd64 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 config: https://ci.syzbot.org/builds/6702bc54-be0f-4db2-85d2-1488a2ec7040/config ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5260 at mm/rmap.c:444 unlink_anon_vmas+0x63c/0x670 Modules linked in: CPU: 1 UID: 0 PID: 5260 Comm: mount Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:unlink_anon_vmas+0x63c/0x670 Code: 08 00 48 3b 6c 24 08 74 29 e8 30 7e af ff 49 89 ee e9 d0 fd ff ff e8 23 7e af ff 90 0f 0b 90 e9 4e fe ff ff e8 15 7e af ff 90 <0f> 0b 90 e9 82 fe ff ff e8 07 7e af ff eb 05 e8 00 7e af ff 48 83 RSP: 0018:ffffc90001bef878 EFLAGS: 00010293 RAX: ffffffff82102ffb RBX: ffff888109476118 RCX: ffff8880215d9cc0 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000 RBP: ffff88810f31e030 R08: ffff88810947611f R09: 1ffff1102128ec23 R10: dffffc0000000000 R11: ffffed102128ec24 R12: ffffffffffffffff R13: 1ffff110212a6ce2 R14: ffff888109536710 R15: ffff888109476110 FS: 0000000000000000(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8adf7b0440 CR3: 000000000df36000 CR4: 00000000000006f0 Call Trace: free_pgtables+0x72b/0x9c0 exit_mmap+0x444/0xb50 __mmput+0x118/0x420 exit_mm+0x1da/0x2c0 do_exit+0x648/0x2300 do_group_exit+0x21c/0x2d0 __x64_sys_exit_group+0x3f/0x40 x64_sys_call+0x21f7/0x2200 do_syscall_64+0xfa/0x3b0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8adf86ea90 Code: Unable to access opcode bytes at 0x7f8adf86ea66. RSP: 002b:00007fffb8de8148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f8adf95f860 RCX: 00007f8adf86ea90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007f8adf95f860 R08: 00007fffb8de7fc0 R09: 00007fffb8de80a0 R10: 00007fffb8de8000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8adf963658 R15: 0000000000000001 *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com.