Warning: Permanently added '10.128.1.132' (ED25519) to the list of known hosts. 2025/06/16 17:34:51 ignoring optional flag "sandboxArg"="0" 2025/06/16 17:34:51 ignoring optional flag "type"="gce" 2025/06/16 17:34:52 parsed 1 programs [ 73.702352][ T1899] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k 2025/06/16 17:35:01 executed programs: 0 2025/06/16 17:35:08 executed programs: 2 [ 89.422994][ T2880] loop0: detected capacity change from 0 to 512 [ 89.450141][ T2880] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 89.511774][ T2880] loop0: detected capacity change from 512 to 511 [ 89.524504][ T2426] 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 [ 89.545449][ T2426] ================================================================== [ 89.553530][ T2426] BUG: KASAN: use-after-free in ext4_read_inline_data+0x18f/0x280 [ 89.561363][ T2426] Read of size 324 at addr ffff88812d0e9c05 by task syz-executor/2426 [ 89.569500][ T2426] [ 89.571833][ T2426] CPU: 1 UID: 0 PID: 2426 Comm: syz-executor Not tainted 6.16.0-rc2-syzkaller #0 PREEMPT(undef) [ 89.571840][ T2426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 89.571847][ T2426] Call Trace: [ 89.571855][ T2426] [ 89.571859][ T2426] dump_stack_lvl+0xf4/0x170 [ 89.571869][ T2426] ? __pfx_dump_stack_lvl+0x10/0x10 [ 89.571874][ T2426] ? rcu_is_watching+0x1f/0xa0 [ 89.571880][ T2426] ? __virt_addr_valid+0x176/0x2b0 [ 89.571885][ T2426] ? lock_release+0x42/0x2f0 [ 89.571889][ T2426] ? lock_acquire+0x69/0x210 [ 89.571893][ T2426] ? _raw_spin_lock_irqsave+0xa5/0xe0 [ 89.571899][ T2426] ? __virt_addr_valid+0x176/0x2b0 [ 89.571903][ T2426] ? __virt_addr_valid+0x262/0x2b0 [ 89.571907][ T2426] print_report+0xd2/0x2b0 [ 89.571914][ T2426] ? ext4_read_inline_data+0x18f/0x280 [ 89.571919][ T2426] kasan_report+0x118/0x150 [ 89.571925][ T2426] ? ext4_read_inline_data+0x18f/0x280 [ 89.571931][ T2426] kasan_check_range+0x2b0/0x2c0 [ 89.571935][ T2426] ? ext4_read_inline_data+0x18f/0x280 [ 89.571940][ T2426] __asan_memcpy+0x29/0x70 [ 89.571945][ T2426] ext4_read_inline_data+0x18f/0x280 [ 89.571951][ T2426] ext4_inlinedir_to_tree+0x2db/0xac0 [ 89.571959][ T2426] ? __pfx_ext4_inlinedir_to_tree+0x10/0x10 [ 89.571964][ T2426] ? __page_table_check_zero+0x84/0x290 [ 89.571978][ T2426] ext4_htree_fill_tree+0x3cb/0xef0 [ 89.571986][ T2426] ? __pfx_ext4_htree_fill_tree+0x10/0x10 [ 89.571993][ T2426] ? inode_query_iversion+0xbe/0x130 [ 89.571999][ T2426] ? __lock_acquire+0x74/0x4c0 [ 89.572003][ T2426] ext4_readdir+0x233a/0x2d10 [ 89.572013][ T2426] ? handle_mm_fault+0x1d0b/0x2310 [ 89.572018][ T2426] ? __pfx_ext4_readdir+0x10/0x10 [ 89.572022][ T2426] ? rwsem_read_trylock+0x18e/0x210 [ 89.572028][ T2426] ? __pfx_rwsem_read_trylock+0x10/0x10 [ 89.572035][ T2426] ? iterate_dir+0xb5/0x4c0 [ 89.572039][ T2426] ? down_read_killable+0x120/0x1a0 [ 89.572046][ T2426] iterate_dir+0x1aa/0x4c0 [ 89.572051][ T2426] __se_sys_getdents64+0xd3/0x1b0 [ 89.572056][ T2426] ? __pfx___se_sys_getdents64+0x10/0x10 [ 89.572060][ T2426] ? exc_page_fault+0x62/0xa0 [ 89.572064][ T2426] ? __pfx_filldir64+0x10/0x10 [ 89.572069][ T2426] ? do_user_addr_fault+0x378/0xc30 [ 89.572076][ T2426] do_syscall_64+0x8f/0x250 [ 89.572083][ T2426] ? fpregs_assert_state_consistent+0x48/0x60 [ 89.572088][ T2426] ? clear_bhb_loop+0x40/0x90 [ 89.572094][ T2426] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.572098][ T2426] RIP: 0033:0x7efe535ec013 [ 89.572108][ T2426] 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 [ 89.572116][ T2426] RSP: 002b:00007ffdd7304c88 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 [ 89.572125][ T2426] RAX: ffffffffffffffda RBX: 000055557ce63520 RCX: 00007efe535ec013 [ 89.572128][ T2426] RDX: 0000000000008000 RSI: 000055557ce63520 RDI: 0000000000000006 [ 89.572131][ T2426] RBP: 000055557ce634f4 R08: 0000000000000000 R09: 0000000000000000 [ 89.572134][ T2426] R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 [ 89.572137][ T2426] R13: 0000000000000016 R14: 000055557ce634f0 R15: 00007ffdd7308020 [ 89.572143][ T2426] [ 89.572145][ T2426] [ 89.885362][ T2426] The buggy address belongs to the physical page: [ 89.891781][ T2426] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x2 pfn:0x12d0e9 [ 89.900617][ T2426] flags: 0x200000000000000(node=0|zone=2) [ 89.906332][ T2426] raw: 0200000000000000 ffffea0004b44308 ffffea0004540b88 0000000000000000 [ 89.914904][ T2426] raw: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 [ 89.923490][ T2426] page dumped because: kasan: bad access detected [ 89.929902][ T2426] page_owner tracks the page as freed [ 89.935269][ T2426] page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 2283, tgid 2283 (modprobe), ts 80163392773, free_ts 80175051462 [ 89.952721][ T2426] post_alloc_hook+0x168/0x1a0 [ 89.957483][ T2426] get_page_from_freelist+0x2c22/0x2de0 [ 89.963018][ T2426] __alloc_frozen_pages_noprof+0x26b/0x460 [ 89.968815][ T2426] alloc_pages_mpol+0xcb/0x270 [ 89.973569][ T2426] vma_alloc_folio_noprof+0x288/0x400 [ 89.979018][ T2426] folio_prealloc+0x24/0xf0 [ 89.983594][ T2426] do_wp_page+0xb0d/0x2ec0 [ 89.987994][ T2426] handle_mm_fault+0x851/0x2310 [ 89.992919][ T2426] do_user_addr_fault+0x31a/0xc30 [ 89.997934][ T2426] exc_page_fault+0x62/0xa0 [ 90.002427][ T2426] asm_exc_page_fault+0x26/0x30 [ 90.007306][ T2426] page last free pid 2283 tgid 2283 stack trace: [ 90.013640][ T2426] free_unref_folios+0xb30/0x1290 [ 90.018657][ T2426] folios_put_refs+0x319/0x400 [ 90.023497][ T2426] free_pages_and_swap_cache+0x35f/0x3c0 [ 90.029122][ T2426] tlb_flush_mmu+0x2ba/0x500 [ 90.033699][ T2426] tlb_finish_mmu+0xaa/0x190 [ 90.038322][ T2426] exit_mmap+0x382/0x850 [ 90.043098][ T2426] __mmput+0x62/0x290 [ 90.047071][ T2426] exit_mm+0x11b/0x1b0 [ 90.051134][ T2426] do_exit+0x4fa/0x1d40 [ 90.055288][ T2426] do_group_exit+0x1b1/0x280 [ 90.059867][ T2426] __x64_sys_exit_group+0x3f/0x40 [ 90.064881][ T2426] x64_sys_call+0x21ba/0x21c0 [ 90.069551][ T2426] do_syscall_64+0x8f/0x250 [ 90.074049][ T2426] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.079933][ T2426] [ 90.082247][ T2426] Memory state around the buggy address: [ 90.087871][ T2426] ffff88812d0e9b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 90.095932][ T2426] ffff88812d0e9b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 90.104108][ T2426] >ffff88812d0e9c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 90.112197][ T2426] ^ [ 90.116269][ T2426] ffff88812d0e9c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 90.124335][ T2426] ffff88812d0e9d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 90.132483][ T2426] ================================================================== [ 90.141205][ T2426] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 90.148824][ T2426] Kernel Offset: disabled [ 90.153145][ T2426] Rebooting in 86400 seconds..