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Message-Id: <169285281339.4146427.8917376304564037982.b4-ty@mit.edu> Date: Thu, 24 Aug 2023 00:53:41 -0400 From: "Theodore Ts'o" <tytso@....edu> To: linux-ext4@...r.kernel.org, Baokun Li <libaokun1@...wei.com> Cc: "Theodore Ts'o" <tytso@....edu>, adilger.kernel@...ger.ca, jack@...e.cz, ritesh.list@...il.com, linux-kernel@...r.kernel.org, yi.zhang@...wei.com, yangerkun@...wei.com, yukuai3@...wei.com, Yikebaer Aizezi <yikebaer61@...il.com> Subject: Re: [PATCH v2] ext4: fix slab-use-after-free in ext4_es_insert_extent() On Tue, 15 Aug 2023 15:08:08 +0800, Baokun Li wrote: > Yikebaer reported an issue: > ================================================================== > BUG: KASAN: slab-use-after-free in ext4_es_insert_extent+0xc68/0xcb0 > fs/ext4/extents_status.c:894 > Read of size 4 at addr ffff888112ecc1a4 by task syz-executor/8438 > > CPU: 1 PID: 8438 Comm: syz-executor Not tainted 6.5.0-rc5 #1 > Call Trace: > [...] > kasan_report+0xba/0xf0 mm/kasan/report.c:588 > ext4_es_insert_extent+0xc68/0xcb0 fs/ext4/extents_status.c:894 > ext4_map_blocks+0x92a/0x16f0 fs/ext4/inode.c:680 > ext4_alloc_file_blocks.isra.0+0x2df/0xb70 fs/ext4/extents.c:4462 > ext4_zero_range fs/ext4/extents.c:4622 [inline] > ext4_fallocate+0x251c/0x3ce0 fs/ext4/extents.c:4721 > [...] > > [...] Applied, thanks! [1/1] ext4: fix slab-use-after-free in ext4_es_insert_extent() commit: 91c66ddfd2dfa4c622c45a3ed0908b36c1adfa28 Best regards, -- Theodore Ts'o <tytso@....edu>
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