ci2 starts bisection 2024-07-29 14:20:48.591725583 +0000 UTC m=+16191.917618401
bisecting fixing commit since 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4
building syzkaller on 34889ee3b09e7b4d381828377aa6173bfcc36cc7
ensuring issue is reproducible on original commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4

testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 76210fdf7efefca9dc2e222f3734299f0e1d3776b82b94f67173a9e219bccf65
run #0: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #1: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #2: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #3: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #4: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #5: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #6: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #8: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #9: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #10: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #11: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #12: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #13: crashed: KASAN: out-of-bounds Read in ext4_read_inline_data
run #14: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #15: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #16: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #17: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #18: crashed: KASAN: use-after-free Read in ext4_read_inline_data
run #19: 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 [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0d4d012178cefdc85a60c2a617d6f333e1b2242492d404c5130aedcebb474e6b
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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
kconfig minimization: base=4920 full=6160 leaves diff=242
split chunks (needed=false): <242>
split chunk #0 of len 242 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 586ce023e44432f0e108e8c3a2f37f0cb943551af4e5a59ccec7e9341b08947f
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 [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 87096acabe89b7f2f72da899f06b28996a856d673eccc0eff34bd19a6ed3fc16
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 [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d9834824782ddd10b8e24a3615d9f3d7fd6bbc71ef39276e58996bd2b55721aa
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 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 17142d1434b98e73786d94bfc10f336c814b9ccf2ce670db3b80aff1311c8dbd
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 [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
failed building 424f92bcbe8fa613ada7aec5ebe4ef434d5e50e4: net/socket.c:1191: undefined reference to `wext_handle_ioctl'
net/socket.c:3385: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:343: undefined reference to `wext_proc_exit'
net/core/net-procfs.c:327: 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 d0a6506ecafdf68213f4bf0c7c2069301a34a510
testing commit d0a6506ecafdf68213f4bf0c7c2069301a34a510 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 06d8431c7518808327e6bfb407c93846987f3b436ba40a10c6eb144b5b99c2b9
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: 1h48m8.114114139s (build: 1h10m44.198293471s, test: 35m24.285267691s)
crash still not fixed or there were kernel test errors
commit msg: Merge cad6da86ca98 ("ALSA: usb-audio: Sort quirk table entries") into android13-5.15-lts
crash: KASAN: use-after-free Read in ext4_read_inline_data
==================================================================
BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:210 [inline]
BUG: KASAN: use-after-free in ext4_read_inline_data+0x1f3/0x2d0 fs/ext4/inline.c:178
Read of size 68 at addr ffff888122c820cf by task syz-executor/487

CPU: 0 PID: 487 Comm: syz-executor Not tainted 5.15.151-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x38/0x49 lib/dump_stack.c:106
 print_address_description.constprop.0+0x24/0x160 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report.cold+0x82/0xdb mm/kasan/report.c:444
 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:210 [inline]
 ext4_read_inline_data+0x1f3/0x2d0 fs/ext4/inline.c:178
 ext4_convert_inline_data_nolock+0x100/0xc40 fs/ext4/inline.c:1237
 ext4_try_add_inline_entry+0x418/0x870 fs/ext4/inline.c:1363
 ext4_add_entry+0x7f1/0x11f0 fs/ext4/namei.c:2409
 ext4_mkdir+0x392/0x890 fs/ext4/namei.c:3032
 vfs_mkdir+0x1d5/0x430 fs/namei.c:4065
 do_mkdirat+0x152/0x2c0 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __x64_sys_mkdirat+0xf4/0x140 fs/namei.c:4103
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f942a66e9e7
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:00007f942a1f1ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f942a1f1f80 RCX: 00007f942a66e9e7
RDX: 00000000000001ff RSI: 0000000020000580 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000580
R13: 00007f942a1f1f40 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

The buggy address belongs to the page:
page:ffffea00048b2080 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x122c82
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea00048b20c8 ffffea00048b2048 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x100dca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO), pid 375, ts 42060711870, free_ts 42153957339
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook mm/page_alloc.c:2605 [inline]
 prep_new_page+0x1a2/0x310 mm/page_alloc.c:2611
 get_page_from_freelist+0x1ce2/0x30a0 mm/page_alloc.c:4485
 __alloc_pages+0x2d1/0x2620 mm/page_alloc.c:5777
 __alloc_pages_node include/linux/gfp.h:591 [inline]
 alloc_pages_node include/linux/gfp.h:605 [inline]
 alloc_pages include/linux/gfp.h:618 [inline]
 do_anonymous_page mm/memory.c:4032 [inline]
 handle_pte_fault+0xacc/0x23d0 mm/memory.c:4869
 __handle_mm_fault+0x4ea/0x1480 mm/memory.c:5167
 do_handle_mm_fault+0x33b/0x690 mm/memory.c:5293
 handle_mm_fault include/linux/mm.h:1836 [inline]
 do_user_addr_fault+0x2ea/0x1160 arch/x86/mm/fault.c:1458
 handle_page_fault arch/x86/mm/fault.c:1549 [inline]
 exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1605
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:568
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare+0x1b6/0x4c0 mm/page_alloc.c:1544
 free_unref_page_prepare mm/page_alloc.c:3534 [inline]
 free_unref_page_list+0x1e3/0xcd0 mm/page_alloc.c:3671
 release_pages+0x37f/0xff0 mm/swap.c:1009
 free_pages_and_swap_cache+0x5d/0x80 mm/swap_state.c:320
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x129/0x790 mm/mmu_gather.c:338
 unmap_region+0x2cd/0x3d0 mm/mmap.c:2691
 __do_munmap+0x481/0x10f0 mm/mmap.c:2925
 __vm_munmap+0x117/0x240 mm/mmap.c:2948
 __do_sys_munmap mm/mmap.c:2974 [inline]
 __se_sys_munmap mm/mmap.c:2970 [inline]
 __x64_sys_munmap+0x62/0x80 mm/mmap.c:2970
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Memory state around the buggy address:
 ffff888122c81f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888122c82000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888122c82080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff888122c82100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888122c82180: 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: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, size=124 fake=0