From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f80.google.com (mail-ot1-f80.google.com [209.85.210.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F27C23B2D1D for ; Sat, 8 Aug 2026 20:10:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786219833; cv=none; b=Rv8GHozZRefyhmS13LZxh49nHafkCl6YiaANs62u3ET8bYJ9ywAQtgHAEL1Qie3adF2f/k1pdkv4tWeUexxnHkkSxcPq2wDApqIqWYcX1sVsIG2grTOiS1bVJqG+xStpLStH1wQHn8AJ3GnETcC4gm/nnQqMiYUPkAIz55jl6VI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786219833; c=relaxed/simple; bh=NStiOU354GC5it+ejw+vFC/g4fHElHp1EZ3xerHRgU0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=owsckpKQBG0SAwC7iXZybkxRgd91Uj/WjV2+Sc+vXghTxNSQmbAob9+wIDrADWHfsQ0FRd3P266W56ld2dayZtn8pHJbo7M9+SvydjhpevLFN5HbUyxwAXAGXAHCzh8fEqbq1HHJXVE/QKKKjAVhKl9QqtAHPK8IRFJkih1JL+0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.210.80 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-ot1-f80.google.com with SMTP id 46e09a7af769-7ebe970a21fso772250a34.2 for ; Sat, 08 Aug 2026 13:10:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786219831; x=1786824631; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=wNiwaLw3oKHbulRkpF0IWn1/FQIST9xYGlACS1TbjJI=; b=a5y7cbJBm+nGFzvPSpGgDpSsPKQGvf1ploWvZ0/zJLMWqLvhCuwivZwfFFKYK8C1pq Cl7onBgSVATz1e3i22jRCBP8Hi7x12azCH85BVJ3nhh5RZl7mmNHDLWC5SSAuT1hivZZ pzRA2h+AMlkYUOVNzCWRN22boYyIXer551OtHJWLbZiXM7DIthSj1/GPmqKol5MZUSn7 buVHRAJt4lL2O3fo2Sa1d138OlZDCcePyexbrvJTseQKw1c44Y4AAA35JEzyvZqg51bl q48ALDiM6uhxX55WI9nTCT1kv+27ZbVb+lbhk2q/1lnuzpnuSwWkTZ9ovUpuz7tKS5b2 9udA== X-Forwarded-Encrypted: i=1; AHgh+RpRQWPIkg7iR2DKCMuwitoY0cdJgf2iMxFhNdD+DkNqhECMWrXQV6YQBqSTqNsvVvd3/u5J3gN7pr4uF7o=@vger.kernel.org X-Gm-Message-State: AOJu0Yw3r/JzzqLgORP3MKVj6icGMC0gLUf2VJVP2pYca7ZE8FTomN0/ r1VMIf7QSnfCUtO3lXnHUJnXKE5/uIG0lqIcxXViukGQnqxx4/H4SCGhGEmugmJSsWfg1id6VIF SStYGnP3kfsLhUT+tcBPeI+F5Z+fo2CCm27DY1mu+DZSb5KvyQTcC/+/X6Ic= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4c0d:b0:6a1:98e6:a8f5 with SMTP id 006d021491bc7-6ae9709a97fmr18231657eaf.36.1786219830874; Sat, 08 Aug 2026 13:10:30 -0700 (PDT) Date: Sat, 08 Aug 2026 13:10:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a778d36.01d0871a.3a0d52.006f.GAE@google.com> Subject: [syzbot] [block?] WARNING in blk_validate_limits From: syzbot To: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6b8c8af514d7 Add linux-next specific files for 20260807 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=112e0149580000 kernel config: https://syzkaller.appspot.com/x/.config?x=6d343b54cc50df0f dashboard link: https://syzkaller.appspot.com/bug?extid=ac00e7bf7ac8c91af921 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=112f6fb9580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/71ff4edcb608/disk-6b8c8af5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1f5fa331d8f2/vmlinux-6b8c8af5.xz kernel image: https://storage.googleapis.com/syzbot-assets/f993558ec63b/bzImage-6b8c8af5.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/9a307a7695b3/mount_1.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=15456132580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ac00e7bf7ac8c91af921@syzkaller.appspotmail.com F2FS-fs (loop0): f2fs_disable_checkpoint: call f2fs_write_checkpoint(), meta: 0, node: 0, data: 0 F2FS-fs (loop0): Start checkpoint disabled! F2FS-fs (loop0): f2fs_disable_checkpoint finishes, err:0 F2FS-fs (loop0): Mounted with checkpoint version = 48b305e6 ------------[ cut here ]------------ lim->dma_alignment > PAGE_SIZE WARNING: block/blk-settings.c:497 at blk_validate_limits+0x1676/0x2270 block/blk-settings.c:497, CPU#0: syz.0.17/5837 Modules linked in: CPU: 0 UID: 0 PID: 5837 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:blk_validate_limits+0x1676/0x2270 block/blk-settings.c:497 Code: e8 ef 7e 11 fd 90 0f 0b 90 eb 8f e8 e4 7e 11 fd 90 0f 0b 90 eb 84 e8 d9 7e 11 fd 90 0f 0b 90 e9 76 ff ff ff e8 cb 7e 11 fd 90 <0f> 0b 90 e9 68 ff ff ff e8 bd 7e 11 fd 90 0f 0b 90 e9 81 00 00 00 RSP: 0018:ffffc90003366e60 EFLAGS: 00010293 RAX: ffffffff84b60635 RBX: ffffc900033670f0 RCX: ffff8880320dbe80 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000001000 RBP: 00000000ffffffff R08: ffff88806ffbcb5f R09: 1ffff1100dff796b R10: dffffc0000000000 R11: ffffed100dff796c R12: ffffc90003367040 R13: dffffc0000000000 R14: 1ffff9200066ce1e R15: dffffc0000000000 FS: 000055557d3c5500(0000) GS:ffff888124f0c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4283f8dd30 CR3: 0000000075748000 CR4: 00000000003526f0 Call Trace: queue_limits_commit_update+0x87/0x390 block/blk-settings.c:552 loop_configure+0x7f1/0xdc0 drivers/block/loop.c:1086 lo_ioctl+0xad5/0x2150 drivers/block/loop.c:1564 blkdev_ioctl+0x5e3/0x740 block/ioctl.c:798 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 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: 0033:0x7f222c19e0d9 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:00007fffebd792d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f222c425fa0 RCX: 00007f222c19e0d9 RDX: 00002000000005c0 RSI: 0000000000004c0a RDI: 0000000000000003 RBP: 00007f222c235024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f222c425fac R14: 00007f222c425fa0 R15: 00007f222c425fa0 --- 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