Subject Data in direntry (dirdata) feature
Author artem.blagodarenko@gmail.com
Date 2026-06-10 15:24:04 +0000 UTC
Version
Cc adilger.kernel@dilger.ca adilger@dilger.ca adilger@diliger.ca artem.blagodarenko@gmail.com linux-ext4@vger.kernel.org pravin.shelar@sun.com
Patches (10)
Name Content [All]
[PATCH v2 01/10] ext4: replace ext4_dir_entry with ext4_dir_entry_2 [Body]
[PATCH v2 02/10] ext4: add ext4_dir_entry_is_tail() [Body]
[PATCH v2 03/10] ext4: refactor dx_root to support variable dirent sizes [Body]
[PATCH v2 04/10] ext4: add dirdata format definitions and access helpers [Body]
[PATCH v2 05/10] ext4: preserve dirdata bits in get_dtype() [Body]
[PATCH v2 06/10] ext4: add ext4_dir_entry_len() and harden dirdata parsing [Body]
[PATCH v2 07/10] ext4: rename ext4_dir_rec_len() and clarify dirdata usage [Body]
[PATCH v2 08/10] ext4: dirdata feature [Body]
[PATCH v2 09/10] ext4: add dirdata set/get helpers [Body]
[PATCH v2 10/10] ext4: Add EXT4_IOC_SET_LUFID ioctl for setting LUFID on directory entries [Body]
Series Summary
5 Findings
finding KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
Log Syz Repro
finding KASAN: slab-out-of-bounds Read in ext4_inlinedir_to_tree
Log Syz Repro
finding KASAN: slab-use-after-free Read in __ext4_check_dir_entry
Log Syz Repro
finding KASAN: slab-use-after-free Read in ext4_inlinedir_to_tree
Log Syz Repro
finding KASAN: use-after-free Read in __ext4_check_dir_entry
Log Syz Repro
Sessions
Session 2026-06-10
5 Findings
ID (for dev) 05f9ede1-ea7e-4ef3-bd79-71e5d3cc2d36
Status finished
Triaged OK [Log]
Execution Log [Link]
Test Base Patched Verdict
[KASAN] Build Base 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] passed [Log]
[KASAN] Boot test: Base 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] passed [Log]
[KASAN] Build Patched 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log]
[KASAN] Boot test: Patched 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log]
[KASAN] Fuzz 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log] [Artifacts]
finding KASAN: slab-out-of-bounds Read in __ext4_check_dir_entry
Log Syz Repro
finding KASAN: slab-out-of-bounds Read in ext4_inlinedir_to_tree
Log Syz Repro
finding KASAN: slab-use-after-free Read in __ext4_check_dir_entry
Log Syz Repro
finding KASAN: slab-use-after-free Read in ext4_inlinedir_to_tree
Log Syz Repro
finding KASAN: use-after-free Read in __ext4_check_dir_entry
Log Syz Repro
Session 2026-06-19
Passed Job Job requested at: https://lore.kernel.org/all/CA+rD4x-3PSjOiarAPPudT3b-3EQcdPzFxc28S_Bw5GqegWaWUw@mail.gmail.com
ID (for dev) 40a7ca8a-ac83-4f97-91a0-233437f73a40
Status finished
Triaged OK [Log]
Execution Log [Link]
Test Base Patched Verdict
[build 0] Build Patched 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log]
[build 0] Boot test: Patched 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log]
Session 2026-06-19
Passed Job Job requested at: https://lore.kernel.org/all/CA+rD4x_2wXOP=4RwPY-A2vJjK4Vv9hGUSVFzprCe1H+8MTOKhA@mail.gmail.com
ID (for dev) 08769134-a853-4686-a652-a4c24e8773d7
Status finished
Triaged OK [Log]
Execution Log [Link]
Test Base Patched Verdict
[build 0] Build Patched 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log]
[build 0] Boot test: Patched 9716c086c8e8b141d35aa61f2e96a2e83de212a7 [Config] [patched] passed [Log]