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AJvYcCXneT02VFRSLgnthybApD3nfQsrVzUH4gsqN21SNYpxiQHT0iACT+Z526vsg7+pZraTvjS1EnTMbOT7XSU=@vger.kernel.org X-Gm-Message-State: AOJu0YxKrFdkJ/LDH4UHOXPKe/EW03xWAO+7YhnBzBxP8ZeEKPc0t7TR WdrrR0+SW4tcLqZ3+ZncK8YxVGTfSAkIVAsiWsv3GhytAzhxWY0MQ/i5mpEEUGPCKVjxFnp6kb+ bC+Wric7Zgt7i+dZBnLWqLjM1U4goKSZ4GYHExw5a4VLp1blkvUJr6UZ+PWA= X-Google-Smtp-Source: AGHT+IG1HT4Nwt9uPiJNpa/WX5MC1LeCNH+o5OL7RG89afFffK3qVI84iRKMpZT1ohZU6FR3UiB1CTUJJQ2RMQw1VraRZJNmiaDf Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:12c9:b0:433:74ec:e77b with SMTP id e9e14a558f8ab-43374ecea17mr134445345ab.4.1762829522616; Mon, 10 Nov 2025 18:52:02 -0800 (PST) Date: Mon, 10 Nov 2025 18:52:02 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6912a4d2.a70a0220.22f260.011f.GAE@google.com> Subject: Re: [syzbot] [ext4?] kernel BUG in ext4_write_inline_data (3) From: syzbot To: albinbabuvarghese20@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in ext4_dirty_folio ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16600 at fs/ext4/inode.c:3964 ext4_dirty_folio+0x172/0x1b0 fs/ext4/inode.c:3964 Modules linked in: CPU: 1 UID: 0 PID: 16600 Comm: syz-executor314 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:ext4_dirty_folio+0x172/0x1b0 fs/ext4/inode.c:3964 Code: 74 7f 47 ff 4c 89 e7 48 89 de 5b 41 5c 41 5d 41 5e 41 5f 5d e9 3f 2b d0 ff e8 5a 7f 47 ff 90 0f 0b 90 eb e0 e8 4f 7f 47 ff 90 <0f> 0b 90 eb a7 e8 44 7f 47 ff 48 89 df 48 c7 c6 60 a3 5e 8b e8 a5 RSP: 0018:ffffc9000489f368 EFLAGS: 00010293 RAX: ffffffff82782371 RBX: ffffea0001b6ce40 RCX: ffff888029725ac0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffffd400036d9c8 R08: ffffea0001b6ce47 R09: 1ffffd400036d9c8 R10: dffffc0000000000 R11: fffff9400036d9c9 R12: ffff888052670e48 R13: 1ffffd400036d9c9 R14: 0000000000000000 R15: ffffea0001b6ce48 FS: 0000000000000000(0000) GS:ffff88812646a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcd1dfa7000 CR3: 0000000030d2d000 CR4: 0000000000350ef0 Call Trace: zap_present_folio_ptes mm/memory.c:1629 [inline] zap_present_ptes mm/memory.c:1709 [inline] do_zap_pte_range mm/memory.c:1810 [inline] zap_pte_range mm/memory.c:1854 [inline] zap_pmd_range mm/memory.c:1946 [inline] zap_pud_range mm/memory.c:1975 [inline] zap_p4d_range mm/memory.c:1996 [inline] unmap_page_range+0x17c9/0x4370 mm/memory.c:2017 unmap_single_vma mm/memory.c:2060 [inline] unmap_vmas+0x399/0x580 mm/memory.c:2104 exit_mmap+0x240/0xb40 mm/mmap.c:1280 __mmput+0x118/0x430 kernel/fork.c:1133 exit_mm+0x1da/0x2c0 kernel/exit.c:582 do_exit+0x648/0x2300 kernel/exit.c:954 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc152b11b89 Code: Unable to access opcode bytes at 0x7fc152b11b5f. RSP: 002b:00007fc152aa4178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fc152b9a718 RCX: 00007fc152b11b89 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc152b9a718 RBP: 00007fc152b9a710 R08: 00007fc152aa46c0 R09: 00007fc152aa46c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc152b9a71c R13: 000000000000006e R14: 00007ffeb6196c60 R15: 00007ffeb6196d48 Tested on: commit: 4427259c Merge tag 'riscv-for-linus-6.18-rc6' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1506a7cd980000 kernel config: https://syzkaller.appspot.com/x/.config?x=2c614fa9e6f5bdc1 dashboard link: https://syzkaller.appspot.com/bug?extid=f3185be57d7e8dda32b8 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=107cf17c580000