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Date: Fri, 09 Sep 2022 02:34:01 +0000
From: bugzilla-daemon@...nel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 216466] ext4: dir corruption when ext4_dx_add_entry() fails
https://bugzilla.kernel.org/show_bug.cgi?id=216466
--- Comment #1 from Zhihao Cheng (chengzhihao1@...wei.com) ---
Reproducer:
1. Apply diff and compile kernel
2. ./test.sh,Stop machine after seeing kernel message "wait shutdown"
3. reboot,fsck -fa /dev/sdb
fsck from util-linux 2.38
/dev/sdb: recovering journal
/dev/sdb: Inode 12, end of extent exceeds allowed value
(logical block 128, physical block 3819, len 1)
/dev/sdb: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.
(i.e., without -a or -p options)
4. fsck -fn /dev/sdb
fsck from util-linux 2.38
e2fsck 1.43.4 (31-Jan-2017)
Pass 1: Checking inodes, blocks, and sizes
Inode 12, end of extent exceeds allowed value
(logical block 128, physical block 3819, len 1)
Clear? no
Inode 12, i_blocks is 262, should be 260. Fix? no
Pass 2: Checking directory structure
Problem in HTREE directory inode 12 (/dir): bad block number 128.
Clear HTree index? no
Problem in HTREE directory inode 12: block #2 has invalid depth (2)
Problem in HTREE directory inode 12: block #2 has bad max hash
Problem in HTREE directory inode 12: block #2 not referenced
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