Warning: Permanently added '10.128.0.33' (ED25519) to the list of known hosts. 2025/07/18 05:44:08 ignoring optional flag "sandboxArg"="0" 2025/07/18 05:44:08 ignoring optional flag "type"="gce" 2025/07/18 05:44:08 parsed 1 programs [ 66.653269][ T1452] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k 2025/07/18 05:44:16 executed programs: 0 2025/07/18 05:44:22 executed programs: 2 [ 80.092424][ T2435] loop0: detected capacity change from 0 to 512 [ 80.109628][ T2435] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 80.175743][ T2435] loop0: detected capacity change from 512 to 511 [ 80.188002][ T1980] EXT4-fs error (device loop0): htree_dirblock_to_tree:1080: inode #2: block 21: comm syz-executor: bad entry in directory: directory entry overrun - offset=1004, inode=0, rec_len=1000, size=1024 fake=0 [ 80.211766][ T1980] ================================================================== [ 80.219852][ T1980] BUG: KASAN: use-after-free in ext4_read_inline_data+0x18f/0x280 [ 80.227664][ T1980] Read of size 324 at addr ffff88812c174c05 by task syz-executor/1980 [ 80.235819][ T1980] [ 80.238146][ T1980] CPU: 0 UID: 0 PID: 1980 Comm: syz-executor Not tainted 6.16.0-rc6-syzkaller #0 PREEMPT(none) [ 80.238152][ T1980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 80.238159][ T1980] Call Trace: [ 80.238164][ T1980] [ 80.238167][ T1980] dump_stack_lvl+0xf4/0x170 [ 80.238176][ T1980] ? __pfx_dump_stack_lvl+0x10/0x10 [ 80.238181][ T1980] ? rcu_is_watching+0x1f/0xa0 [ 80.238187][ T1980] ? __virt_addr_valid+0x176/0x2b0 [ 80.238192][ T1980] ? lock_release+0x42/0x2f0 [ 80.238196][ T1980] ? lock_acquire+0x69/0x210 [ 80.238199][ T1980] ? __virt_addr_valid+0x262/0x2b0 [ 80.238202][ T1980] print_report+0xca/0x230 [ 80.238208][ T1980] ? ext4_read_inline_data+0x18f/0x280 [ 80.238214][ T1980] kasan_report+0x118/0x150 [ 80.238218][ T1980] ? ext4_read_inline_data+0x18f/0x280 [ 80.238222][ T1980] kasan_check_range+0x2b0/0x2c0 [ 80.238226][ T1980] ? ext4_read_inline_data+0x18f/0x280 [ 80.238230][ T1980] __asan_memcpy+0x29/0x70 [ 80.238234][ T1980] ext4_read_inline_data+0x18f/0x280 [ 80.238239][ T1980] ext4_inlinedir_to_tree+0x2db/0xac0 [ 80.238244][ T1980] ? __pfx_ext4_inlinedir_to_tree+0x10/0x10 [ 80.238248][ T1980] ? __page_table_check_zero+0x84/0x290 [ 80.238258][ T1980] ext4_htree_fill_tree+0x3cb/0xef0 [ 80.238264][ T1980] ? __pfx_ext4_htree_fill_tree+0x10/0x10 [ 80.238269][ T1980] ? inode_query_iversion+0xbe/0x130 [ 80.238274][ T1980] ? __lock_acquire+0x74/0x4c0 [ 80.238277][ T1980] ext4_readdir+0x233a/0x2d10 [ 80.238284][ T1980] ? handle_mm_fault+0x1d0b/0x2310 [ 80.238288][ T1980] ? __pfx_ext4_readdir+0x10/0x10 [ 80.238291][ T1980] ? rwsem_read_trylock+0x18e/0x210 [ 80.238297][ T1980] ? __pfx_rwsem_read_trylock+0x10/0x10 [ 80.238302][ T1980] ? iterate_dir+0xb5/0x4c0 [ 80.238306][ T1980] ? down_read_killable+0x120/0x1a0 [ 80.238311][ T1980] iterate_dir+0x1aa/0x4c0 [ 80.238315][ T1980] __se_sys_getdents64+0xd3/0x1b0 [ 80.238320][ T1980] ? __pfx___se_sys_getdents64+0x10/0x10 [ 80.238323][ T1980] ? exc_page_fault+0x62/0xa0 [ 80.238327][ T1980] ? __pfx_filldir64+0x10/0x10 [ 80.238330][ T1980] ? do_user_addr_fault+0x378/0xc30 [ 80.238336][ T1980] do_syscall_64+0x8f/0x250 [ 80.238342][ T1980] ? fpregs_assert_state_consistent+0x48/0x60 [ 80.238347][ T1980] ? clear_bhb_loop+0x40/0x90 [ 80.238351][ T1980] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.238355][ T1980] RIP: 0033:0x7f9b1c4ac013 [ 80.238363][ T1980] Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 52 43 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 [ 80.238369][ T1980] RSP: 002b:00007ffd0cc8c828 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 [ 80.238377][ T1980] RAX: ffffffffffffffda RBX: 0000555555a07520 RCX: 00007f9b1c4ac013 [ 80.238380][ T1980] RDX: 0000000000008000 RSI: 0000555555a07520 RDI: 0000000000000006 [ 80.238382][ T1980] RBP: 0000555555a074f4 R08: 0000000000000000 R09: 0000000000000000 [ 80.238385][ T1980] R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 [ 80.238392][ T1980] R13: 0000000000000016 R14: 0000555555a074f0 R15: 00007ffd0cc8fbc0 [ 80.238396][ T1980] [ 80.238398][ T1980] [ 80.540399][ T1980] The buggy address belongs to the physical page: [ 80.546781][ T1980] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x2e4 pfn:0x12c174 [ 80.555795][ T1980] flags: 0x200000000000000(node=0|zone=2) [ 80.561494][ T1980] raw: 0200000000000000 ffffea0004b030c8 ffffea0004b05dc8 0000000000000000 [ 80.570046][ T1980] raw: 00000000000002e4 0000000000000000 00000000ffffffff 0000000000000000 [ 80.578689][ T1980] page dumped because: kasan: bad access detected [ 80.585076][ T1980] page_owner tracks the page as freed [ 80.590437][ T1980] page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 1461, tgid 1461 (syz-executor), ts 67253527020, free_ts 67347805221 [ 80.608198][ T1980] post_alloc_hook+0x168/0x1a0 [ 80.612942][ T1980] get_page_from_freelist+0x2c22/0x2de0 [ 80.618548][ T1980] __alloc_frozen_pages_noprof+0x26b/0x460 [ 80.624327][ T1980] alloc_pages_mpol+0xcb/0x270 [ 80.629060][ T1980] vma_alloc_folio_noprof+0x288/0x400 [ 80.634487][ T1980] folio_prealloc+0x24/0xf0 [ 80.638966][ T1980] do_wp_page+0xb0d/0x2ec0 [ 80.643352][ T1980] handle_mm_fault+0x851/0x2310 [ 80.648172][ T1980] do_user_addr_fault+0x31a/0xc30 [ 80.653201][ T1980] exc_page_fault+0x62/0xa0 [ 80.657692][ T1980] asm_exc_page_fault+0x26/0x30 [ 80.662884][ T1980] page last free pid 1461 tgid 1461 stack trace: [ 80.669203][ T1980] free_unref_folios+0xb30/0x1290 [ 80.674215][ T1980] folios_put_refs+0x319/0x400 [ 80.678972][ T1980] free_pages_and_swap_cache+0x20d/0x3c0 [ 80.684574][ T1980] tlb_flush_mmu+0x2ba/0x500 [ 80.689136][ T1980] tlb_finish_mmu+0xaa/0x190 [ 80.693710][ T1980] exit_mmap+0x382/0x850 [ 80.697929][ T1980] __mmput+0x62/0x290 [ 80.701888][ T1980] exit_mm+0x11b/0x1b0 [ 80.705935][ T1980] do_exit+0x506/0x1d40 [ 80.710144][ T1980] do_group_exit+0x1b1/0x280 [ 80.714791][ T1980] get_signal+0xd77/0xeb0 [ 80.719092][ T1980] arch_do_signal_or_restart+0x95/0x5b0 [ 80.724609][ T1980] exit_to_user_mode_loop+0x70/0xd0 [ 80.729775][ T1980] do_syscall_64+0x181/0x250 [ 80.734334][ T1980] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.740194][ T1980] [ 80.742523][ T1980] Memory state around the buggy address: [ 80.748128][ T1980] ffff88812c174b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.756157][ T1980] ffff88812c174b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.764191][ T1980] >ffff88812c174c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.772220][ T1980] ^ [ 80.776341][ T1980] ffff88812c174c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.784370][ T1980] ffff88812c174d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 80.792401][ T1980] ================================================================== [ 80.800554][ T1980] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 80.807938][ T1980] Kernel Offset: disabled [ 80.812236][ T1980] Rebooting in 86400 seconds..