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Thu, 12 Feb 2026 13:21:09 -0800 (PST) Date: Thu, 12 Feb 2026 13:21:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <698e4445.a70a0220.2c38d7.00a3.GAE@google.com> Subject: [moderation/CI] Re: fs/ntfs3: add delayed-allocation (delalloc) support From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v1] fs/ntfs3: add delayed-allocation (delalloc) support https://lore.kernel.org/all/20260212170849.12455-1-almaz.alexandrovich@paragon-software.com * [PATCH] fs/ntfs3: add delayed-allocation (delalloc) support and found the following issue: WARNING in ntfs_extend_initialized_size Full report is available here: https://ci.syzbot.org/series/13e78e99-d298-48f9-b81b-be0931799244 *** WARNING in ntfs_extend_initialized_size tree: linux-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next base: 9152bc8cebcb14dc16b03ec81f2377ee8ce12268 arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/b551b487-d04a-4a8a-89aa-575a75c69c23/config C repro: https://ci.syzbot.org/findings/c8966f1e-fd77-42d2-8f24-1e7b54ac54dd/c_repro syz repro: https://ci.syzbot.org/findings/c8966f1e-fd77-42d2-8f24-1e7b54ac54dd/syz_repro loop0: detected capacity change from 0 to 4096 ------------[ cut here ]------------ is_compressed(ni) WARNING: fs/ntfs3/file.c:236 at ntfs_extend_initialized_size+0x1dc/0x210 fs/ntfs3/file.c:236, CPU#1: syz.0.17/5975 Modules linked in: CPU: 1 UID: 0 PID: 5975 Comm: syz.0.17 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:ntfs_extend_initialized_size+0x1dc/0x210 fs/ntfs3/file.c:236 Code: 0d ff 4c 89 33 31 ed eb 05 e8 70 8b a3 fe 89 e8 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9b a6 8e 08 cc e8 55 8b a3 fe 90 <0f> 0b 90 e9 31 ff ff ff 89 d1 80 e1 07 80 c1 03 38 c1 0f 8c e1 fe RSP: 0018:ffffc90004547c30 EFLAGS: 00010293 RAX: ffffffff8322128b RBX: ffff8881a8229670 RCX: ffff88810ba49d00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000800 R08: ffff8881a8229737 R09: 1ffff110350452e6 R10: dffffc0000000000 R11: ffffed10350452e7 R12: 0000000000000110 R13: 0000000000000ef0 R14: 1ffff110350452ce R15: 0000000000000000 FS: 000055555ee59500(0000) GS:ffff8882a9460000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f811e871980 CR3: 000000010f87c000 CR4: 00000000000006f0 Call Trace: ntfs_fallocate+0xf21/0x1220 fs/ntfs3/file.c:670 vfs_fallocate+0x669/0x7e0 fs/open.c:340 ksys_fallocate fs/open.c:364 [inline] __do_sys_fallocate fs/open.c:369 [inline] __se_sys_fallocate fs/open.c:367 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:367 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f811e99bf79 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:00007ffecc78b558 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f811ec15fa0 RCX: 00007f811e99bf79 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007f811ea327e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f811ec15fac R14: 00007f811ec15fa0 R15: 00007f811ec15fa0 *** 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. The email will later be sent to: [almaz.alexandrovich@paragon-software.com linux-fsdevel@vger.kernel.org linux-kernel@vger.kernel.org ntfs3@lists.linux.dev] If the report looks fine to you, reply with: #syz upstream If the report is a false positive, reply with #syz invalid