ci2 starts bisection 2025-05-03 10:23:01.993019408 +0000 UTC m=+65893.301796774 bisecting fixing commit since e2b9748880b939d8d99877b72cc4cc42951d49b6 building syzkaller on d3ccff6372e07c6aabd02b5da419aa6492b5f0ad ensuring issue is reproducible on original commit e2b9748880b939d8d99877b72cc4cc42951d49b6 testing commit e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 7580492e348d1f878defa3927d73c3dd2c5cda55971f66e94afd5f0a023b2aa7 run #0: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #1: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #2: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #3: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #4: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #5: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #6: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #7: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #8: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #9: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #10: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #11: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #12: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #13: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #14: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #15: crashed: KASAN: out-of-bounds Read in ext4_read_inline_dir run #16: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #17: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #18: crashed: KASAN: use-after-free Read in ext4_read_inline_dir run #19: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 0208696e8ca97e956fc5805a2a179fe54822ca4da5528a7a94d2142eb7c78301 all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, 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=5185 full=6548 leaves diff=266 split chunks (needed=false): <266> split chunk #0 of len 266 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: a80ad1125558becc3a1d3c42038cca50d4c387eb508efa013e8232cda734bff2 all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 63c7e9329293ea26d3a3faadf4a60569b440593b9ed0f75011c87dbe4b581feb all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: fb7abf077b9974bcb5611876d4ceae82349a219d4887b9ddb5acb3ae49ef892f all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 5e87c9f7ac1486905fbf165ab08b523c426761559ccfc307005230ca166252e5 all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, 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 e2b9748880b939d8d99877b72cc4cc42951d49b6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 failed building e2b9748880b939d8d99877b72cc4cc42951d49b6: ld.lld: error: undefined symbol: wext_proc_init ld.lld: error: undefined symbol: wext_proc_exit ld.lld: error: undefined symbol: wext_handle_ioctl ld.lld: error: undefined symbol: compat_wext_handle_ioctl minimized to 50 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_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 0c1a07d9c284e99188696b78ddd6faae7b402ae6 testing commit 0c1a07d9c284e99188696b78ddd6faae7b402ae6 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 0c008c7794339cfdec72300381525795bfad3493c2d7e57c7ca826c5797be54e all runs: crashed: KASAN: use-after-free Read in ext4_read_inline_dir representative crash: KASAN: use-after-free Read in ext4_read_inline_dir, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 2h10m36.690168836s (build: 1h41m38.430431708s, test: 23m32.374871769s) crash still not fixed or there were kernel test errors commit msg: ANDROID: GKI: Update the symbol list for mtk crash: KASAN: use-after-free Read in ext4_read_inline_dir ================================================================== 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_dir+0x344/0xbe0 fs/ext4/inline.c:1512 Read of size 68 at addr ffff888127e5cd05 by task syz-executor/455 CPU: 0 PID: 455 Comm: syz-executor Not tainted 6.1.134-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Call Trace: __dump_stack+0x19/0x1c lib/dump_stack.c:88 dump_stack_lvl+0xa3/0xec lib/dump_stack.c:106 print_address_description+0x71/0x210 mm/kasan/report.c:316 print_report+0x4a/0x60 mm/kasan/report.c:427 kasan_report+0x122/0x150 mm/kasan/report.c:531 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x280/0x290 mm/kasan/generic.c:189 memcpy+0x2d/0x70 mm/kasan/shadow.c:65 ext4_read_inline_data fs/ext4/inline.c:210 [inline] ext4_read_inline_dir+0x344/0xbe0 fs/ext4/inline.c:1512 ext4_readdir+0x256/0x31e0 fs/ext4/dir.c:161 iterate_dir+0x221/0x540 fs/readdir.c:-1 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0xc9/0x190 fs/readdir.c:354 __x64_sys_getdents64+0x76/0x80 fs/readdir.c:354 x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:218 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fdb38fb8693 Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 82 3e f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 RSP: 002b:00007fff2d028648 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000555561d95520 RCX: 00007fdb38fb8693 RDX: 0000000000008000 RSI: 0000555561d95520 RDI: 0000000000000006 RBP: 0000555561d954f4 R08: 0000555561d9554b R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 R13: 0000000000000016 R14: 0000555561d954f0 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea00049f9700 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x127e5c flags: 0x4000000000000000(zone=1) raw: 4000000000000000 ffffea00049f9748 ffffea00049f96c8 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 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 477, tgid 476 (syz.6.16), ts 51885657299, free_ts 53096855584 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook mm/page_alloc.c:2637 [inline] prep_new_page+0x58c/0x650 mm/page_alloc.c:2644 get_page_from_freelist+0x2f02/0x2f70 mm/page_alloc.c:4539 __alloc_pages+0x19e/0x3a0 mm/page_alloc.c:5838 __folio_alloc+0x12/0x40 mm/page_alloc.c:5870 __folio_alloc_node include/linux/gfp.h:245 [inline] folio_alloc include/linux/gfp.h:274 [inline] shmem_alloc_folio mm/shmem.c:1601 [inline] shmem_alloc_and_acct_folio+0x3d7/0x780 mm/shmem.c:1626 shmem_get_folio_gfp+0x9cb/0x1860 mm/shmem.c:1955 shmem_get_folio mm/shmem.c:2086 [inline] shmem_write_begin+0xd0/0x220 mm/shmem.c:2571 generic_perform_write+0x30d/0x620 mm/filemap.c:3881 __generic_file_write_iter+0x1ea/0x490 mm/filemap.c:4010 generic_file_write_iter+0x9d/0x260 mm/filemap.c:4042 call_write_iter include/linux/fs.h:2274 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x504/0xa30 fs/read_write.c:584 ksys_write+0xf9/0x1c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x76/0x80 fs/read_write.c:646 x64_sys_call+0x27b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1545 [inline] free_pcp_prepare mm/page_alloc.c:1619 [inline] free_unref_page_prepare+0x645/0x650 mm/page_alloc.c:3581 free_unref_page_list+0xba/0x790 mm/page_alloc.c:3729 release_pages+0x904/0x960 mm/swap.c:1043 __pagevec_release+0x60/0xd0 mm/swap.c:1063 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] shmem_undo_range+0x42b/0xfd0 mm/shmem.c:955 shmem_truncate_range mm/shmem.c:1071 [inline] shmem_evict_inode+0x3b8/0x8d0 mm/shmem.c:1180 evict+0x3eb/0x820 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x4c1/0x4f0 fs/inode.c:1860 dentry_unlink_inode+0x2c7/0x370 fs/dcache.c:405 __dentry_kill+0x38c/0x5f0 fs/dcache.c:611 dentry_kill+0xc3/0x200 fs/dcache.c:-1 dput+0x117/0x250 fs/dcache.c:918 __fput+0x35e/0x700 fs/file_table.c:328 ____fput+0x9/0x10 fs/file_table.c:348 task_work_run+0x153/0x1e0 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x81e/0x1fe0 kernel/exit.c:877 Memory state around the buggy address: ffff888127e5cc00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888127e5cc80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888127e5cd00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888127e5cd80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888127e5ce00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== EXT4-fs (loop4): unmounting filesystem.