From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi2-f11.google.com (mail-oi2-f11.google.com [74.125.231.203]) (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 4978317557E for ; Wed, 16 Sep 2026 12:57:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.231.203 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789563465; cv=none; b=aTOGnOplxlWe+cZgIhDRf1QWEw2CaRK8xudh872nzTBCrwPtvNJXuBefAw02NGt7vs/Ek9AWlLlWSAUDwOr4QSRAWfTT+XMNIgagkJRFKCVw/eY8Vc3rHDEeFEpIdMB4lQci4Dao/i7M0vaUcAr/tI72RbHWCBj5XQehnkrR2YA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789563465; c=relaxed/simple; bh=ALAoBp10WosS6M5BF145iCAdsHTQ4UWOwIDk/B+VOE4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Kiy2pTn4KdDhfz07xRlYtSglaO8zixSCgSFk94NMQz8ofmq3JuiH7IvdgStWFam9+xKR83/wJ3gNaP1842Gdx76ncFXr7D6FGVYPapepZG5CsEOFmWF5HeWnACBdTjQ78hjZhJuKzBYPgXOjXT40kx6zIuOHmJJsXrVhZoU7+Sk= 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=74.125.231.203 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-oi2-f11.google.com with SMTP id 5614622812f47-4c112aaaee4so1834519b6e.0 for ; Wed, 16 Sep 2026 05:57:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789563460; x=1790168260; 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=qqOXltCLzmrKhZdKgvPqkXCy5qiS/WnyKMpTb+33Ndk=; b=tQFba2TPxvcmjyRNGSxXblAY19Ulz718xWzlFBZLXxFmC5wliZkQFtJv1EV16t+xVq QBn2MfEDin7hfiIgt0xLd46uP2G1PPwEhQN4NczhfBkfsAFLAoC6K270FaxI+AnaO3UI Wy8Ilp/9skaMHnseguewEh3UJx2SXJ6WSkY6N8ahgWE7UI7YvI9Ut2IV5K6LdN6+gkkI 8/JYVlpJBpT6lYl4ehC0KRtN1EO4F3qOXv+QkhN6wHSj2oIKLUR0SOe5Xu5aiiMCUQFA aWiJUJvVNFWd++Xid8djE+toMU4DGfE7/EwkVPtmmGDu9tptgnzfOb08KwIv8Q1XPHyx FudQ== X-Gm-Message-State: AFuF++niCMlCJ035YAycNbATszZCaP1uqmycY5ul7OwE3EEzuTn3K802 9cTd3F6Kl/7z+s0k63VbMh8ZFSbkysgOFWFBsBfWMvmgad7iAjoNSdrOaNsOMZO9Q0jPL2G3cMn lI5PRN01LQnebwKSdSVQ1HuC0YvLSFyidx2ez5NiqvpZwRvubdrfTjmnjmEb9Vg== Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1488:b0:4c4:3997:ef2f with SMTP id 5614622812f47-4ca4a3fe0dbmr2789797b6e.17.1789563459887; Wed, 16 Sep 2026 05:57:39 -0700 (PDT) Date: Wed, 16 Sep 2026 05:57:39 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aaa9243.e91c2013.3bdb06.0000.GAE@google.com> Subject: [syzbot] [raid?] kernel BUG in find_zone From: syzbot To: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, magiclinan@didiglobal.com, song@kernel.org, syzkaller-bugs@googlegroups.com, xiao@kernel.org, yukuai@fnnas.com, yukuai@fygo.io Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 50d05c7c76c9 Merge tag 'landlock-7.3-rc3' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=100769f9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=85bc5cc2fc7394d9 dashboard link: https://syzkaller.appspot.com/bug?extid=50f9bc7ab8eb224b7629 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-50d05c7c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/303a0ade8f9e/vmlinux-50d05c7c.xz kernel image: https://storage.googleapis.com/syzbot-assets/70b8ca71442b/bzImage-50d05c7c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+50f9bc7ab8eb224b7629@syzkaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at drivers/md/raid0.c:318! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 8386 Comm: syz.2.584 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:find_zone drivers/md/raid0.c:318 [inline] RIP: 0010:find_zone.isra.0+0x129/0x150 drivers/md/raid0.c:305 Code: f9 48 89 e8 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 89 ef e8 a2 00 fe f9 e9 79 ff ff ff e8 c8 bf 8b f9 90 <0f> 0b 48 8b 3c 24 e8 8c 00 fe f9 e9 04 ff ff ff 48 89 df e8 7f 00 RSP: 0018:ffffc9000557f090 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888022b34b00 RSI: ffffffff887fa208 RDI: ffff888022b34b00 RBP: ffff888042790b18 R08: 0000000000000004 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888096a60000(0063) knlGS:00000000f53fdb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000033863fff CR3: 0000000070ae4000 CR4: 0000000000352ef0 Call Trace: raid0_map_submit_bio drivers/md/raid0.c:568 [inline] raid0_make_request+0x299/0x1660 drivers/md/raid0.c:626 md_handle_request+0x824/0x1230 drivers/md/md.c:417 md_submit_bio+0x1e9/0x350 drivers/md/md.c:458 __submit_bio block/blk-core.c:681 [inline] __submit_bio+0x20e/0x3d0 block/blk-core.c:670 __submit_bio_noacct block/blk-core.c:724 [inline] submit_bio_noacct_nocheck+0x736/0xc00 block/blk-core.c:792 submit_bio_noacct+0xc93/0x2130 block/blk-core.c:925 blk_crypto_submit_bio include/linux/blk-crypto.h:212 [inline] __bh_submit+0x7ce/0xaa0 fs/buffer.c:1132 bh_submit fs/buffer.c:1146 [inline] block_read_full_folio+0x496/0x8c0 fs/buffer.c:2373 filemap_read_folio+0xfc/0x3b0 mm/filemap.c:2520 do_read_cache_folio+0x2d7/0x6b0 mm/filemap.c:4156 read_mapping_folio include/linux/pagemap.h:1015 [inline] read_part_sector+0xd1/0x370 block/partitions/core.c:724 adfspart_check_ICS+0x91/0x7d0 block/partitions/acorn.c:357 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x7b1/0x1260 block/partitions/core.c:695 blkdev_get_whole+0x187/0x290 block/bdev.c:793 bdev_open+0x2c7/0xe40 block/bdev.c:1002 blkdev_open+0x34e/0x4f0 block/fops.c:674 do_dentry_open+0x6ab/0x14d0 fs/open.c:996 vfs_open+0x82/0x3f0 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x19fa/0x2440 fs/namei.c:5000 do_file_open+0x20e/0x430 fs/namei.c:5029 do_sys_openat2+0x10f/0x1e0 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_compat_sys_openat fs/open.c:1485 [inline] __se_compat_sys_openat fs/open.c:1483 [inline] __ia32_compat_sys_openat+0x12d/0x210 fs/open.c:1483 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline] __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf700efec Code: Unable to access opcode bytes at 0xf700efc2. RSP: 002b:00000000f53fd50c EFLAGS: 00000292 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000080000300 RDX: 0000000000004002 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:find_zone drivers/md/raid0.c:318 [inline] RIP: 0010:find_zone.isra.0+0x129/0x150 drivers/md/raid0.c:305 Code: f9 48 89 e8 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 89 ef e8 a2 00 fe f9 e9 79 ff ff ff e8 c8 bf 8b f9 90 <0f> 0b 48 8b 3c 24 e8 8c 00 fe f9 e9 04 ff ff ff 48 89 df e8 7f 00 RSP: 0018:ffffc9000557f090 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888022b34b00 RSI: ffffffff887fa208 RDI: ffff888022b34b00 RBP: ffff888042790b18 R08: 0000000000000004 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888096a60000(0063) knlGS:00000000f53fdb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f5315ff4 CR3: 0000000070ae4000 CR4: 0000000000352ef0 --- 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 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