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Message-ID: <174775151765.432196.16616898847416276522.b4-ty@mit.edu> Date: Tue, 20 May 2025 10:40:09 -0400 From: "Theodore Ts'o" <tytso@....edu> To: jack@...e.cz, Jeongjun Park <aha310510@...il.com> Cc: "Theodore Ts'o" <tytso@....edu>, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, syzbot+de24c3fe3c4091051710@...kaller.appspotmail.com Subject: Re: [PATCH v2] jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata() On Wed, 14 May 2025 22:08:55 +0900, Jeongjun Park wrote: > Since handle->h_transaction may be a NULL pointer, so we should change it > to call is_handle_aborted(handle) first before dereferencing it. > > And the following data-race was reported in my fuzzer: > > ================================================================== > BUG: KCSAN: data-race in jbd2_journal_dirty_metadata / jbd2_journal_dirty_metadata > > [...] Applied, thanks! [1/1] jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata() commit: af98b0157adf6504fade79b3e6cb260c4ff68e37 Best regards, -- Theodore Ts'o <tytso@....edu>
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