ci2 starts bisection 2024-09-10 12:15:32.302947039 +0000 UTC m=+40641.583175518
bisecting fixing commit since 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde
building syzkaller on f10afd6936523834f5b3297e9771b19a8f0edcb5
ensuring issue is reproducible on original commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde

testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 16188bd39f4c24d10a6ddd4368a643b0c98a521a4492593a9982a9be186bb6d3
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7875b91696d3a2594c7b6181196e9d18a0be5f2e7d80bdf405bdb3716ab8a93e
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
kconfig minimization: base=4789 full=6018 leaves diff=238
split chunks (needed=false): <238>
split chunk #0 of len 238 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 79343f28addcd673c1430c21aedefd9d10ccd2bec0fde85cdb7cefe188d7a03a
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: f08aca89da091f6188ca93d724e547faa191a47e86b22690d35c106e671a3a8d
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a08c5da278845a5ca05114e12f9e41ff0bd0b0ecdfa9abb7757486bd0a51e605
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3c2e48ca30a22254eb93f23b56dda8e7d2f38b803a7d136c29cb83e4b5efc991
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing commit 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
failed building 70b6ab09a34b4cbcada982b2f5c68a408a5c0cde: net/socket.c:1128: undefined reference to `wext_handle_ioctl'
net/socket.c:3397: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:346: undefined reference to `wext_proc_exit'
net/core/net-procfs.c:330: undefined reference to `wext_proc_init'
minimized to 46 configs; suspects: [HID_ZEROPLUS USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL USB_SERIAL_FTDI_SIO USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS X86_X32 ZEROPLUS_FF]
disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing current HEAD 1c5354a314ea97f0a5371eaa59d5710bf76d8eb6
testing commit 1c5354a314ea97f0a5371eaa59d5710bf76d8eb6 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 861dbf6e52f633fb5a2c032e18441d77c5fc015eb938bd4ff7ae584c1248024d
all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_data
representative crash: KASAN: use-after-free Read in ext4_read_inline_data, types: [KASAN]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 35m44.862363294s (build: 14m25.691770403s, test: 19m55.345307894s)
crash still not fixed or there were kernel test errors
commit msg: Merge branch 'android13-5.10' into android13-5.10-lts
crash: KASAN: use-after-free Read in ext4_read_inline_data
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
==================================================================
BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:209 [inline]
BUG: KASAN: use-after-free in ext4_read_inline_data+0x1f3/0x2d0 fs/ext4/inline.c:177
Read of size 68 at addr ffff88812003b0cf by task syz-executor.0/352

CPU: 0 PID: 352 Comm: syz-executor.0 Not tainted 5.10.223-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x81/0xac lib/dump_stack.c:118
 print_address_description.constprop.0+0x24/0x160 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report.cold+0x82/0xdb mm/kasan/report.c:452
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x148/0x190 mm/kasan/generic.c:189
 memcpy+0x24/0x60 mm/kasan/shadow.c:65
 ext4_read_inline_data fs/ext4/inline.c:209 [inline]
 ext4_read_inline_data+0x1f3/0x2d0 fs/ext4/inline.c:177
 ext4_convert_inline_data_nolock+0x100/0xc10 fs/ext4/inline.c:1224
 ext4_try_add_inline_entry+0x4a5/0x5f0 fs/ext4/inline.c:1349
 ext4_add_entry+0x7f1/0x11f0 fs/ext4/namei.c:2365
 ext4_mkdir+0x381/0x890 fs/ext4/namei.c:2970
 vfs_mkdir+0x463/0x700 fs/namei.c:3790
 do_mkdirat+0x12a/0x290 fs/namei.c:3812
 __do_sys_mkdirat fs/namei.c:3823 [inline]
 __se_sys_mkdirat fs/namei.c:3821 [inline]
 __x64_sys_mkdirat+0x71/0xb0 fs/namei.c:3821
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f03cc3099a7
Code: 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f03cbe8bef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f03cbe8bf80 RCX: 00007f03cc3099a7
RDX: 00000000000001ff RSI: 0000000020000580 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000580
R13: 00007f03cbe8bf40 R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea0004800ec0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x12003b
flags: 0x4000000000000000()
raw: 4000000000000000 ffffea0004800f08 ffffea0004800e88 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffff88812003af80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88812003b000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88812003b080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff88812003b100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88812003b180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop0): ext4_check_all_de:655: inode #12: block 5: comm syz-executor.0: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, size=124 fake=0