From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f208.google.com (mail-oi1-f208.google.com [209.85.167.208]) (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 0C26D4B8DF7 for ; Tue, 5 May 2026 18:27:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778005658; cv=none; b=NZBNEQQGU0zQrOzx4KCaaOF/axDHzFMPVz9o2QGlSJZW1ZQ3XFcJQhK4NmbtiVraTiFBV/6o8GZEeZ0uerRtTOEatXiDjyH05e2bK6TkuKA2nOPW6WXDUAdJTsspO12IOvWHqVnmvDyQfu1ZoF7xjGD2ucD2qK/ljP/w8jXzFV0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778005658; c=relaxed/simple; bh=6qg7lrd9ig5mU6LXMohHVmhzWkj/jRGRmTckuRAf63Y=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=EDJATY8BxsbRWO8hOhHev4dmqew5UHKuoMlHupuu2+oCjEFJJCMYTz+KohAmd/TkDj+kNyLOI8Hl4028GIm3rQPo//SKGrDMEJlsKFH9ciXVRNUJH73KD/RYyNmwIaBszbooFCpoCUc3cwykBpQf0D49mKDWw7rTL8/rcEpVxwQ= 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=209.85.167.208 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-oi1-f208.google.com with SMTP id 5614622812f47-479d605705cso3753788b6e.1 for ; Tue, 05 May 2026 11:27:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778005655; x=1778610455; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=mqyGGJBac2r6ZdLj7wL1AOUtZBS8FLQp+4/G675aVMY=; b=TjEsLe/UC5f0aElp9OymikpLEy0CKfF6TIAuHGQ6i8ophpsMk7gA+FWwrC4sr/YtvR sjbxvr5QFwIcAbglAi0rzkLgwAe3qGvRUuedY+KaQm6zcQwIJWZO6A+FC1r0LFua1MYo ql8uZDZiZGMwTZZV7pqEU8CAnh0t0Qh/Jm9vSIaVQu+3fhWIZ9KWvuzc+cpd6Du1pPF5 mOT7kqRCfbJgd5L6nXLC+fvTqhPLRaZtETOQFPdvFFULJzkvGTLCJ1T/9JhocSHECa0O 90BC9cqii0e0DUShxhFscnns8z2LIcPuw3nr0DZodmbKBN6FNae1a4cq93K0fPvA2uiH jMsg== X-Forwarded-Encrypted: i=1; AFNElJ/OqAo93YHtV/CTHZxj7TbA3SbC6iVmrf5pymwoyUURVM+RCyx1g5HHtFbcyyCyjd/t7e6/suF1sz3HZX0=@vger.kernel.org X-Gm-Message-State: AOJu0YyFD0+QUfKxsAyjjNVF3XmJXvzwJUjlpRCvXPlNKgqqaLgMMu8p 3WkI3vFTkQQbwzT9i1itEpQ3FNHl9BQUXoPhq0O9xzxRS6RaczLeFMcIlUoAy9paC+Qx+gZmWb7 V+ZVkXjWfhCvZ6+UrQhFI4PNyIWtPveK8AnMHFwiMbTj3BXvpcpiviEjpWtY= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:81c6:b0:696:8325:f7f5 with SMTP id 006d021491bc7-6998a599fe1mr2360054eaf.4.1778005655072; Tue, 05 May 2026 11:27:35 -0700 (PDT) Date: Tue, 05 May 2026 11:27:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69fa3697.170a0220.59368.0018.GAE@google.com> Subject: [syzbot] [f2fs?] kernel BUG in f2fs_do_truncate_blocks (2) From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, 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: 26fd6bff2c05 Merge tag 'mtd/fixes-for-7.1-rc2' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1604bb48580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7f195f6be48c12ec dashboard link: https://syzkaller.appspot.com/bug?extid=2488d8d751b27f7ce268 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 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-26fd6bff.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c6a6df2148f4/vmlinux-26fd6bff.xz kernel image: https://storage.googleapis.com/syzbot-assets/9b86e0551588/bzImage-26fd6bff.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2488d8d751b27f7ce268@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 131072 F2FS-fs (loop0): QUOTA feature is enabled, so ignore qf_name F2FS-fs (loop0): build fault injection rate: 7 F2FS-fs (loop0): build fault injection type: 0x40004 F2FS-fs (loop0): invalid crc value F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of read_compacted_summaries fs/f2fs/segment.c:4301 [inline] F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of restore_curseg_summaries fs/f2fs/segment.c:4445 [inline] F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_curseg+0x105c/0x30c0 fs/f2fs/segment.c:4983 F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of restore_curseg_summaries fs/f2fs/segment.c:4452 [inline] F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_curseg+0x18ea/0x30c0 fs/f2fs/segment.c:4983 F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_sit_entries+0x26c/0x1f10 fs/f2fs/segment.c:5000 F2FS-fs (loop0): inject invalid blkaddr in f2fs_is_valid_blkaddr of f2fs_ra_meta_pages+0x21c/0xd60 fs/f2fs/checkpoint.c:472 F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of f2fs_get_meta_folio_retry+0x27/0x80 fs/f2fs/checkpoint.c:318 F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of f2fs_get_meta_folio_retry+0x27/0x80 fs/f2fs/checkpoint.c:318 ------------[ cut here ]------------ kernel BUG at fs/f2fs/file.c:845! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:f2fs_do_truncate_blocks+0x1115/0x1140 fs/f2fs/file.c:845 Code: fc fc 90 0f 0b e8 8b 9d 9a fd 90 0f 0b e8 83 9d 9a fd 48 89 df 48 c7 c6 60 d1 1a 8c e8 54 f1 fc fc 90 0f 0b e8 6c 9d 9a fd 90 <0f> 0b e8 64 9d 9a fd 90 0f 0b 90 e9 93 fd ff ff e8 56 9d 9a fd 90 RSP: 0018:ffffc9000e4474c0 EFLAGS: 00010283 RAX: ffffffff842b1d34 RBX: 0000000000000003 RCX: 0000000000100000 RDX: ffffc9000f03a000 RSI: 0000000000035503 RDI: 0000000000035504 RBP: ffffc9000e447608 R08: ffff8880123b0000 R09: 0000000000000002 R10: 00000000fffffffe R11: 0000000000000002 R12: 0000000000000001 R13: 0000000000000000 R14: 1ffff92001c88ea0 R15: 00000000ffff039c FS: 00007f7e02ee36c0(0000) GS:ffff88808c887000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0305c4000 CR3: 0000000012d4c000 CR4: 0000000000352ef0 Call Trace: f2fs_truncate_blocks+0x10a/0x300 fs/f2fs/file.c:882 f2fs_truncate+0x471/0x7c0 fs/f2fs/file.c:940 f2fs_evict_inode+0xa3f/0x1ac0 fs/f2fs/inode.c:907 evict+0x61e/0xb10 fs/inode.c:841 f2fs_fill_super+0x5f43/0x78f0 fs/f2fs/super.c:5224 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694 vfs_get_tree+0x92/0x2a0 fs/super.c:1754 fc_mount fs/namespace.c:1193 [inline] do_new_mount_fc fs/namespace.c:3758 [inline] do_new_mount+0x341/0xd30 fs/namespace.c:3834 do_mount fs/namespace.c:4167 [inline] __do_sys_mount fs/namespace.c:4383 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4360 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7e01f9e04a Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f7e02ee2e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7e02ee2ea0 RCX: 00007f7e01f9e04a RDX: 0000200000000080 RSI: 00002000000105c0 RDI: 00007f7e02ee2e60 RBP: 0000200000000080 R08: 00007f7e02ee2ea0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000105c0 R13: 00007f7e02ee2e60 R14: 0000000000010589 R15: 0000200000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:f2fs_do_truncate_blocks+0x1115/0x1140 fs/f2fs/file.c:845 Code: fc fc 90 0f 0b e8 8b 9d 9a fd 90 0f 0b e8 83 9d 9a fd 48 89 df 48 c7 c6 60 d1 1a 8c e8 54 f1 fc fc 90 0f 0b e8 6c 9d 9a fd 90 <0f> 0b e8 64 9d 9a fd 90 0f 0b 90 e9 93 fd ff ff e8 56 9d 9a fd 90 RSP: 0018:ffffc9000e4474c0 EFLAGS: 00010283 RAX: ffffffff842b1d34 RBX: 0000000000000003 RCX: 0000000000100000 RDX: ffffc9000f03a000 RSI: 0000000000035503 RDI: 0000000000035504 RBP: ffffc9000e447608 R08: ffff8880123b0000 R09: 0000000000000002 R10: 00000000fffffffe R11: 0000000000000002 R12: 0000000000000001 R13: 0000000000000000 R14: 1ffff92001c88ea0 R15: 00000000ffff039c FS: 00007f7e02ee36c0(0000) GS:ffff88808c887000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e028509c38 CR3: 0000000012d4c000 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