ci2 starts bisection 2024-09-30 02:37:19.966262362 +0000 UTC m=+147109.010325572
bisecting fixing commit since 6364d594125d5489b4f160c055505ec08c68c4eb
building syzkaller on 3ce4924c386b24ce0dea10478efdecc852cda540
ensuring issue is reproducible on original commit 6364d594125d5489b4f160c055505ec08c68c4eb

testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1d7bf705cdc00fb55655125da06264b14e238b6edaec6e6eb38194e256d7f59a
all runs: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a7b6beb1382ffa85c1c1edd6f6a9579d89ab8f2ae123e52776968ab5e7eed572
all runs: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, 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=5179 full=6494 leaves diff=257
split chunks (needed=false): <257>
split chunk #0 of len 257 into 5 parts
testing without sub-chunk 1/5
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: d8979caba862428a84d87dacbd67bb7f0883d0908620fab379848e0ba0241c30
all runs: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed
testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 645a048e8255d3dc552341674fa8effd11ce3cbb9d7490d9cedbaa5ac58a566f
run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #2: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
run #9: crashed: KASAN: out-of-bounds Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed
testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 28c3d0b957eefe65040f15eb708a5581022077a5f4609d370b5580349be887c8
all runs: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6899c17000fa90b856ebc504da212b22ac8b9fc4fc870e89376fac8d9bb3e2aa
all runs: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 6364d594125d5489b4f160c055505ec08c68c4eb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
failed building 6364d594125d5489b4f160c055505ec08c68c4eb: net/socket.c:1245: undefined reference to `wext_handle_ioctl'
net/socket.c:3442: undefined reference to `compat_wext_handle_ioctl'
net/core/net-procfs.c:329: undefined reference to `wext_proc_init'
net/core/net-procfs.c:345: undefined reference to `wext_proc_exit'
minimized to 49 configs; suspects: [HID_ZEROPLUS 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_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 V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF]
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed
testing current HEAD 1105954181599e104121e3563c15f11dcb1c9ed0
testing commit 1105954181599e104121e3563c15f11dcb1c9ed0 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 092f025cd3b70e6a1678dc5bb13ddfdaae5f543fa9138d866c8bdb7a0cabcde6
all runs: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 56m49.329948593s (build: 31m49.305939326s, test: 22m25.992275382s)
crash still not fixed or there were kernel test errors
commit msg: UPSTREAM: usb: dwc3: core: update LC timer as per USB Spec V3.2
crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock
==================================================================
BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:210 [inline]
BUG: KASAN: use-after-free in ext4_convert_inline_data_nolock+0x280/0x980 fs/ext4/inline.c:1216
Read of size 68 at addr ffff88811fb0a0cf by task syz-executor.4/404

CPU: 1 PID: 404 Comm: syz-executor.4 Not tainted 6.1.99-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x105/0x148 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 kasan_check_range+0x294/0x2a0 mm/kasan/generic.c:189
 memcpy+0x2d/0x70 mm/kasan/shadow.c:65
 ext4_read_inline_data fs/ext4/inline.c:210 [inline]
 ext4_convert_inline_data_nolock+0x280/0x980 fs/ext4/inline.c:1216
 ext4_try_add_inline_entry+0x69e/0x9c0 fs/ext4/inline.c:1342
 ext4_add_entry+0x384/0xba0 fs/ext4/namei.c:2409
 ext4_mkdir+0x472/0xa50 fs/ext4/namei.c:3032
 vfs_mkdir+0x2ea/0x480 fs/namei.c:4107
 do_mkdirat+0x230/0x390 fs/namei.c:4132
 __do_sys_mkdirat fs/namei.c:4147 [inline]
 __se_sys_mkdirat fs/namei.c:4145 [inline]
 __x64_sys_mkdirat+0x84/0x90 fs/namei.c:4145
 x64_sys_call+0x6c6/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff6a687c9a7
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:00007ff6a764cef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ff6a764cf80 RCX: 00007ff6a687c9a7
RDX: 00000000000001ff RSI: 0000000020000580 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000580
R13: 00007ff6a764cf40 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

The buggy address belongs to the physical page:
page:ffffea00047ec280 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x11fb0a
flags: 0x4000000000000000(zone=1)
raw: 4000000000000000 ffffea00047ec2c8 ffffea00047ec248 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 0x8140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO|__GFP_CMA), pid 404, tgid 403 (syz-executor.4), ts 46114198939, free_ts 46114584571
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook mm/page_alloc.c:2590 [inline]
 prep_new_page+0x512/0x5e0 mm/page_alloc.c:2597
 get_page_from_freelist+0x288b/0x2910 mm/page_alloc.c:4425
 __alloc_pages+0x39f/0x780 mm/page_alloc.c:5714
 __folio_alloc+0x15/0x40 mm/page_alloc.c:5746
 __folio_alloc_node include/linux/gfp.h:245 [inline]
 folio_alloc include/linux/gfp.h:274 [inline]
 alloc_page_vma include/linux/gfp.h:283 [inline]
 wp_page_copy+0x218/0x1270 mm/memory.c:3184
 do_wp_page+0x9ef/0xc80
 handle_pte_fault mm/memory.c:5158 [inline]
 __handle_mm_fault mm/memory.c:5282 [inline]
 handle_mm_fault+0xffc/0x2550 mm/memory.c:5422
 do_user_addr_fault arch/x86/mm/fault.c:1323 [inline]
 handle_page_fault arch/x86/mm/fault.c:1466 [inline]
 exc_page_fault+0x3b3/0x6d0 arch/x86/mm/fault.c:1522
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1498 [inline]
 free_pcp_prepare mm/page_alloc.c:1572 [inline]
 free_unref_page_prepare+0x794/0x7a0 mm/page_alloc.c:3498
 free_unref_page_list+0xf1/0x790 mm/page_alloc.c:3646
 release_pages+0xcfc/0xd50 mm/swap.c:1063
 free_pages_and_swap_cache+0x68/0x80 mm/swap_state.c:315
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu mm/mmu_gather.c:261 [inline]
 tlb_finish_mmu+0x1ba/0x3b0 mm/mmu_gather.c:361
 unmap_region+0x2a3/0x300 mm/mmap.c:2403
 do_mas_align_munmap+0xb63/0x1150 mm/mmap.c:2670
 do_mas_munmap+0x199/0x1e0 mm/mmap.c:2728
 __vm_munmap+0x24e/0x360 mm/mmap.c:3018
 __do_sys_munmap mm/mmap.c:3044 [inline]
 __se_sys_munmap mm/mmap.c:3040 [inline]
 __x64_sys_munmap+0x66/0x70 mm/mmap.c:3040
 x64_sys_call+0x75/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:12
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Memory state around the buggy address:
 ffff88811fb09f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811fb0a000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88811fb0a080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff88811fb0a100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811fb0a180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
EXT4-fs error (device loop4): ext4_check_all_de:655: inode #12: block 5: comm syz-executor.4: bad entry in directory: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, size=124 fake=0