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AHgh+RqEwrA3KJTbd0uu5JrncK7zT3WFkw3pCc1eRCiZSdCvC1smfNKDAJx0Hsb0n+fA14iSrsyO92w4cXaET/8=@vger.kernel.org X-Gm-Message-State: AOJu0Ywq8TAUO6ZFaGeJOWusOBfsjqG921VI0Lv2U+wsI/nkHQg/DTHz DrMixfK0tLaVaspjHcIG/6vRuHVIfHnBwv2lx1kLWBJZZiMUY0sqgSHbsuJO5eTF0tQiNSNMoPW ieN+/+b/cZQ+EY9WF9ocbc7o5HcpHDbL0B4sy8dXPRTyFbykjbFOoA3TKkac= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:13d4:b0:496:9ee:e538 with SMTP id 5614622812f47-4b1af69a123mr4067786b6e.5.1786219831127; Sat, 08 Aug 2026 13:10:31 -0700 (PDT) Date: Sat, 08 Aug 2026 13:10:31 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a778d37.01d0871a.3a0d52.0070.GAE@google.com> Subject: [syzbot] [mm?] WARNING in mmap_region From: syzbot To: akpm@linux-foundation.org, jannh@google.com, liam@infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, ljs@kernel.org, pfalcato@suse.de, syzkaller-bugs@googlegroups.com, vbabka@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 1701fda2f58e Add linux-next specific files for 20260805 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=120a0fb9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1abaff330e312dba dashboard link: https://syzkaller.appspot.com/bug?extid=d3c6764857d7cac5048a compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1255d7b9580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/260da702bc71/disk-1701fda2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/006e50e3e545/vmlinux-1701fda2.xz kernel image: https://storage.googleapis.com/syzbot-assets/232c4643654a/bzImage-1701fda2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d3c6764857d7cac5048a@syzkaller.appspotmail.com ------------[ cut here ]------------ vma_is_anonymous(vma) WARNING: mm/internal.h:241 at mmap_file mm/internal.h:241 [inline], CPU#0: syz.0.17/5892 WARNING: mm/internal.h:241 at __mmap_new_file_vma mm/vma.c:2586 [inline], CPU#0: syz.0.17/5892 WARNING: mm/internal.h:241 at __mmap_new_vma mm/vma.c:2685 [inline], CPU#0: syz.0.17/5892 WARNING: mm/internal.h:241 at __mmap_region mm/vma.c:2905 [inline], CPU#0: syz.0.17/5892 WARNING: mm/internal.h:241 at mmap_region+0x1f8d/0x2460 mm/vma.c:2990, CPU#0: syz.0.17/5892 Modules linked in: CPU: 0 UID: 0 PID: 5892 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:mmap_file mm/internal.h:241 [inline] RIP: 0010:__mmap_new_file_vma mm/vma.c:2586 [inline] RIP: 0010:__mmap_new_vma mm/vma.c:2685 [inline] RIP: 0010:__mmap_region mm/vma.c:2905 [inline] RIP: 0010:mmap_region+0x1f8d/0x2460 mm/vma.c:2990 Code: d6 a0 ff e9 69 f1 ff ff e8 10 d6 a0 ff 90 0f 0b 90 e9 5f e2 ff ff e8 02 d6 a0 ff 90 0f 0b 90 e9 02 fe ff ff e8 f4 d5 a0 ff 90 <0f> 0b 90 c7 44 24 08 ea ff ff ff 48 b8 00 00 00 00 00 fc ff df 41 RSP: 0018:ffffc900037bf560 EFLAGS: 00010293 RAX: ffffffff8226adfc RBX: fffff520006f7ec0 RCX: ffff88801d711f40 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: ffffc900037bfb70 R08: ffff8880122eb803 R09: 1ffff1100245d700 R10: dffffc0000000000 R11: ffffed100245d701 R12: dffffc0000000000 R13: 1ffff920006f7efd R14: 1ffff11006c41e09 R15: ffff88803620f048 FS: 0000555564503500(0000) GS:ffff888124f18000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa7f9a70000 CR3: 0000000071f6c000 CR4: 00000000003526f0 Call Trace: do_mmap+0xe0a/0x1300 mm/mmap.c:573 vm_mmap_pgoff+0x272/0x4e0 mm/util.c:581 ksys_mmap_pgoff+0x4dc/0x760 mm/mmap.c:619 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x510 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa7f9b9e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffcfdacab8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fa7f9e25fa0 RCX: 00007fa7f9b9e0d9 RDX: 0000000002000000 RSI: 0000000000003000 RDI: 0000200000ffa000 RBP: 00007fa7f9c35024 R08: 0000000000000003 R09: 0000000100000000 R10: 0000000000000013 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa7f9e25fac R14: 00007fa7f9e25fa0 R15: 00007fa7f9e25fa0 --- 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@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup