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AJvYcCXmiZI2FHXJMIT7z9D73ol9D+KCGZeavOLKEhqP3hAVOUhQoXoc6fwyNxSWiS/yaRcWcS0abnlDfdAjBtI=@vger.kernel.org X-Gm-Message-State: AOJu0Yz67zal6UTk3KLCflbk+O2a5tAmVkFV0SFaBa0QmDAB5tpM0+ss KbVeYeqEoXwtUVajIKWWQjPOLkAVuTPJhkILj3hEnCg8czaIMwRW8sZw+iyLs15hQyXD8GcNJof S85Vg6GGYh30Cn4/aoNNsrAaJ7Jy7nuHUc/nDG/qWqycE0UqcC4ocJgkqs7I= X-Google-Smtp-Source: AGHT+IHUXyhtvi/hubPS1nQrbhhusnyOiD0ntKp/kY4k2bxekAwtU46M2f2+UctlAjFmdiAm8N+U9B06BWusi9Q+pvzrM3jdWnMA Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1c95:b0:65b:32b4:83e7 with SMTP id 006d021491bc7-65b451863a4mr67052eaf.19.1765493435493; Thu, 11 Dec 2025 14:50:35 -0800 (PST) Date: Thu, 11 Dec 2025 14:50:35 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <693b4abb.a70a0220.33cd7b.003a.GAE@google.com> Subject: [syzbot] [mm?] WARNING in blkdev_common_ioctl 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" Hello, syzbot found the following issue on: HEAD commit: cb015814f8b6 Merge tag 'f2fs-for-6.19-rc1' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17215992580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4ba13acbacc6118f dashboard link: https://syzkaller.appspot.com/bug?extid=660d079d90f8a1baf54d compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14d49a1a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=100e2a1a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/fe039b381b1b/disk-cb015814.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/499efdc87215/vmlinux-cb015814.xz kernel image: https://storage.googleapis.com/syzbot-assets/515c65eb7e89/bzImage-cb015814.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+660d079d90f8a1baf54d@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: mm/page_alloc.c:5186 at __alloc_frozen_pages_noprof+0x309/0x2430 mm/page_alloc.c:5186, CPU#1: syz.0.17/6010 Modules linked in: CPU: 1 UID: 0 PID: 6010 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__alloc_frozen_pages_noprof+0x309/0x2430 mm/page_alloc.c:5186 Code: f0 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d1 42 5e 09 83 fe 0a 0f 86 0c fe ff ff 80 3d 84 7b 57 0e 00 75 0b c6 05 7b 7b 57 0e 01 90 <0f> 0b 90 45 31 f6 eb 81 4d 85 f6 74 22 44 89 fa 89 ee 4c 89 f7 e8 RSP: 0018:ffffc9000414f888 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000017 RDI: 0000000000040dc0 RBP: 0000000000000017 R08: 0000000000000005 R09: 0000000000000009 R10: 0000000000000017 R11: ffff88802ffe4830 R12: 0000000000040dc0 R13: 1ffff92000829f27 R14: ffffffff9ac29ac4 R15: 0000000000000017 FS: 0000555575978500(0000) GS:ffff888124a0e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000240 CR3: 000000007b864000 CR4: 00000000003526f0 Call Trace: alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2486 ___kmalloc_large_node+0x10c/0x150 mm/slub.c:5593 __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:5624 __do_kmalloc_node mm/slub.c:5640 [inline] __kmalloc_noprof.cold+0xc/0x62 mm/slub.c:5664 kmalloc_noprof include/linux/slab.h:961 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] blkdev_pr_read_keys block/ioctl.c:449 [inline] blkdev_common_ioctl+0x1f72/0x2b60 block/ioctl.c:729 blkdev_ioctl+0x2b5/0x6e0 block/ioctl.c:785 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 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: 0033:0x7f6c89d8f7c9 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:00007fffde61cdd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6c89fe5fa0 RCX: 00007f6c89d8f7c9 RDX: 0000000000000000 RSI: 00000000c01070ce RDI: 0000000000000003 RBP: 00007f6c89e13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6c89fe5fa0 R14: 00007f6c89fe5fa0 R15: 0000000000000003 --- 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