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AKwUvBzvemKQVpFQjiub5ZGuMk/9vmkNBOhcAoRJcdzxKTfRZkdGpo8yHbXI01O0Us7Se8u1suOYw2VDAg==@kvack.org X-Gm-Message-State: AFuF++njlMVQG1VC41d6hBrCbBAZxA6PxGU7jZPS94AlPHJ4RXgLCnzQ 5kjv5R/rIFoUaNFEQzxl+JJyd1py1er43ArJyXT3aOQl5X5iUmtxn/GyU5DhzBMrQYQS/kJOskr zlaoNS5dQqwxgQisbS36Irs9NQvuw7sSFxzzLSXzu4mgcj4S7/O01c7AzH4A= MIME-Version: 1.0 X-Received: by 2002:a05:6820:4b09:b0:6b4:c316:6fdd with SMTP id 006d021491bc7-6ca9aa41fcbmr4126293eaf.19.1789794443460; Fri, 18 Sep 2026 22:07:23 -0700 (PDT) Date: Fri, 18 Sep 2026 22:07:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aae188b.71f81b7d.15fa6d.0004.GAE@google.com> Subject: [syzbot] [mm?] WARNING in v9fs_fid_get_acl (2) From: syzbot To: akpm@linux-foundation.org, apopple@nvidia.com, byungchul@sk.com, david@kernel.org, gourry@gourry.net, joshua.hahnjy@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, matthew.brost@intel.com, rakie.kim@sk.com, syzkaller-bugs@googlegroups.com, ying.huang@linux.alibaba.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 9164940007 X-Stat-Signature: uswix6bjw6sjotir64kitxog9tf9u585 X-Rspam-User: X-HE-Tag: 1789794444-165820 X-HE-Meta: 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 587858367581 Merge tag 'nfsd-7.3-1' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1361a115580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8c5c3949d762a91f dashboard link: https://syzkaller.appspot.com/bug?extid=de6fd6789748a8aa64a0 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11f64df9580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e1a115580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-58785836.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f8460d7438eb/vmlinux-58785836.xz kernel image: https://storage.googleapis.com/syzbot-assets/551bf08b9af2/bzImage-58785836.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+de6fd6789748a8aa64a0@syzkaller.appspotmail.com ------------[ cut here ]------------ 1 WARNING: mm/page_alloc.c:5340 at alloc_order_allowed mm/page_alloc.c:5340 [inline], CPU#0: syz.1.357/7872 WARNING: mm/page_alloc.c:5340 at __alloc_frozen_pages_noprof+0x2137/0x3300 mm/page_alloc.c:5397, CPU#0: syz.1.357/7872 Modules linked in: CPU: 0 UID: 0 PID: 7872 Comm: syz.1.357 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:alloc_order_allowed mm/page_alloc.c:5340 [inline] RIP: 0010:__alloc_frozen_pages_noprof+0x2137/0x3300 mm/page_alloc.c:5397 Code: 13 00 00 39 84 24 98 00 00 00 0f 85 4a fa ff ff e9 91 f6 ff ff 80 3d e2 93 bb 0e 00 0f 85 9d e2 ff ff c6 05 d5 93 bb 0e 01 90 <0f> 0b 90 e9 8d e2 ff ff 31 c0 e9 5f ec ff ff 48 8b 7c 24 08 48 c7 RSP: 0018:ffffc90004df7758 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000029 RDI: 0000000000040d40 RBP: 0000000000000029 R08: 0000000000000000 R09: 0000000000000009 R10: 0000000000000029 R11: 0000000000000000 R12: 0000000000040d40 R13: 1ffff920009bef47 R14: 0000000000000000 R15: 1ffff920009bef05 FS: 00007fc8804026c0(0000) GS:ffff8880d5b59000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc88037dff8 CR3: 0000000037685000 CR4: 0000000000352ef0 Call Trace: alloc_pages_mpol+0x201/0x550 mm/mempolicy.c:2486 ___kmalloc_large_node+0xe8/0x130 mm/slub.c:5353 __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:5385 __do_kmalloc_node mm/slub.c:5402 [inline] __kmalloc_noprof+0x5a8/0x840 mm/slub.c:5439 _kmalloc_noprof include/linux/slab.h:995 [inline] _kzalloc_noprof include/linux/slab.h:1312 [inline] v9fs_fid_get_acl+0x7a/0x120 fs/9p/acl.c:33 __v9fs_get_acl fs/9p/acl.c:67 [inline] v9fs_get_acl+0xe8/0x480 fs/9p/acl.c:93 v9fs_qid_iget_dotl fs/9p/vfs_inode_dotl.c:131 [inline] v9fs_inode_from_fid_dotl+0x26d/0x300 fs/9p/vfs_inode_dotl.c:154 v9fs_get_new_inode_from_fid fs/9p/v9fs.h:264 [inline] v9fs_get_tree+0x55c/0xb50 fs/9p/vfs_super.c:120 vfs_get_tree+0x92/0x320 fs/super.c:1933 fc_mount fs/namespace.c:1198 [inline] do_new_mount_fc fs/namespace.c:3772 [inline] do_new_mount fs/namespace.c:3848 [inline] path_mount+0x7d0/0x24c0 fs/namespace.c:4168 do_mount fs/namespace.c:4181 [inline] __do_sys_mount fs/namespace.c:4397 [inline] __se_sys_mount fs/namespace.c:4374 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4374 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc87f59e159 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:00007fc880402028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc87f825fa0 RCX: 00007fc87f59e159 RDX: 0000200000000240 RSI: 0000200000000200 RDI: 0000000000000000 RBP: 00007fc87f63503b R08: 0000200000000180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc87f826038 R14: 00007fc87f825fa0 R15: 00007ffeeb3b2c38 --- 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