Warning: Permanently added '10.128.10.54' (ED25519) to the list of known hosts. 2025/08/17 11:36:23 ignoring optional flag "sandboxArg"="0" 2025/08/17 11:36:23 ignoring optional flag "type"="gce" 2025/08/17 11:36:24 parsed 1 programs [ 59.010859][ T1424] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k 2025/08/17 11:36:31 executed programs: 0 2025/08/17 11:36:37 executed programs: 2 [ 71.726955][ T2375] loop0: detected capacity change from 0 to 512 [ 71.742580][ T2375] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. [ 71.793531][ T2375] loop0: detected capacity change from 512 to 511 [ 71.805402][ T1926] 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 [ 71.826419][ T1926] ================================================================== [ 71.834672][ T1926] BUG: KASAN: use-after-free in ext4_read_inline_data+0x18f/0x280 [ 71.842485][ T1926] Read of size 324 at addr ffff88812bbb7c05 by task syz-executor/1926 [ 71.850706][ T1926] [ 71.853028][ T1926] CPU: 1 UID: 0 PID: 1926 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller #0 PREEMPT(none) [ 71.853035][ T1926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 71.853039][ T1926] Call Trace: [ 71.853046][ T1926] [ 71.853050][ T1926] dump_stack_lvl+0xf4/0x170 [ 71.853061][ T1926] ? __pfx_dump_stack_lvl+0x10/0x10 [ 71.853066][ T1926] ? rcu_is_watching+0x1f/0xa0 [ 71.853071][ T1926] ? __virt_addr_valid+0x176/0x2b0 [ 71.853077][ T1926] ? lock_release+0x42/0x2f0 [ 71.853082][ T1926] ? lock_acquire+0x69/0x210 [ 71.853086][ T1926] ? __virt_addr_valid+0x262/0x2b0 [ 71.853091][ T1926] print_report+0xca/0x240 [ 71.853098][ T1926] ? ext4_read_inline_data+0x18f/0x280 [ 71.853104][ T1926] kasan_report+0x118/0x150 [ 71.853111][ T1926] ? ext4_read_inline_data+0x18f/0x280 [ 71.853116][ T1926] kasan_check_range+0x2b0/0x2c0 [ 71.853122][ T1926] ? ext4_read_inline_data+0x18f/0x280 [ 71.853126][ T1926] __asan_memcpy+0x29/0x70 [ 71.853132][ T1926] ext4_read_inline_data+0x18f/0x280 [ 71.853137][ T1926] ext4_inlinedir_to_tree+0x2d8/0xab0 [ 71.853142][ T1926] ? __update_page_owner_handle+0x54/0x390 [ 71.853150][ T1926] ? __pfx_ext4_inlinedir_to_tree+0x10/0x10 [ 71.853161][ T1926] ext4_htree_fill_tree+0x3cb/0xef0 [ 71.853169][ T1926] ? __pfx_ext4_htree_fill_tree+0x10/0x10 [ 71.853174][ T1926] ? __pfx_css_rstat_updated+0x10/0x10 [ 71.853182][ T1926] ? inode_query_iversion+0xbe/0x130 [ 71.853188][ T1926] ? __lock_acquire+0x74/0x4c0 [ 71.853193][ T1926] ext4_readdir+0x233a/0x2d10 [ 71.853202][ T1926] ? handle_mm_fault+0x1d0b/0x2310 [ 71.853209][ T1926] ? __pfx_ext4_readdir+0x10/0x10 [ 71.853213][ T1926] ? rwsem_read_trylock+0x18e/0x210 [ 71.853219][ T1926] ? lock_vma_under_rcu+0x11c/0x200 [ 71.853223][ T1926] ? __pfx_rwsem_read_trylock+0x10/0x10 [ 71.853229][ T1926] ? iterate_dir+0xb5/0x4c0 [ 71.853235][ T1926] ? down_read_killable+0x120/0x1a0 [ 71.853243][ T1926] iterate_dir+0x1aa/0x4c0 [ 71.853250][ T1926] __se_sys_getdents64+0xd3/0x1b0 [ 71.853256][ T1926] ? __pfx___se_sys_getdents64+0x10/0x10 [ 71.853261][ T1926] ? exc_page_fault+0x62/0xa0 [ 71.853267][ T1926] ? __pfx_filldir64+0x10/0x10 [ 71.853271][ T1926] ? do_user_addr_fault+0x378/0xc30 [ 71.853279][ T1926] do_syscall_64+0x8f/0x250 [ 71.853286][ T1926] ? fpregs_assert_state_consistent+0x48/0x60 [ 71.853294][ T1926] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 71.853300][ T1926] RIP: 0033:0x7faeaa91c013 [ 71.853308][ T1926] 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 [ 71.853313][ T1926] RSP: 002b:00007ffc83b2de48 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 [ 71.853326][ T1926] RAX: ffffffffffffffda RBX: 000055556957a520 RCX: 00007faeaa91c013 [ 71.853331][ T1926] RDX: 0000000000008000 RSI: 000055556957a520 RDI: 0000000000000006 [ 71.853334][ T1926] RBP: 000055556957a4f4 R08: 0000000000000000 R09: 0000000000000000 [ 71.853339][ T1926] R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 [ 71.853343][ T1926] R13: 0000000000000016 R14: 000055556957a4f0 R15: 00007ffc83b311e0 [ 71.853350][ T1926] [ 71.853353][ T1926] [ 72.160712][ T1926] The buggy address belongs to the physical page: [ 72.167113][ T1926] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x1ce pfn:0x12bbb7 [ 72.176100][ T1926] flags: 0x200000000000000(node=0|zone=2) [ 72.181798][ T1926] raw: 0200000000000000 ffffea0004b042c8 ffffea0004aeee88 0000000000000000 [ 72.190446][ T1926] raw: 00000000000001ce 0000000000000000 00000000ffffffff 0000000000000000 [ 72.199018][ T1926] page dumped because: kasan: bad access detected [ 72.205433][ T1926] page_owner tracks the page as freed [ 72.210800][ T1926] page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 1920, tgid 1920 (modprobe), ts 65815568990, free_ts 65820275228 [ 72.228127][ T1926] post_alloc_hook+0x168/0x1a0 [ 72.232866][ T1926] get_page_from_freelist+0x287a/0x2a30 [ 72.238377][ T1926] __alloc_frozen_pages_noprof+0x26b/0x460 [ 72.244262][ T1926] alloc_pages_mpol+0xcb/0x270 [ 72.248992][ T1926] vma_alloc_folio_noprof+0x288/0x400 [ 72.254329][ T1926] folio_prealloc+0x24/0xf0 [ 72.258800][ T1926] do_wp_page+0xc71/0x2eb0 [ 72.263184][ T1926] handle_mm_fault+0x851/0x2310 [ 72.268010][ T1926] do_user_addr_fault+0x31a/0xc30 [ 72.273008][ T1926] exc_page_fault+0x62/0xa0 [ 72.277480][ T1926] asm_exc_page_fault+0x26/0x30 [ 72.282561][ T1926] page last free pid 1920 tgid 1920 stack trace: [ 72.288855][ T1926] free_unref_folios+0xd04/0x1330 [ 72.293867][ T1926] folios_put_refs+0x319/0x400 [ 72.298599][ T1926] free_pages_and_swap_cache+0x20d/0x3c0 [ 72.304238][ T1926] tlb_flush_mmu+0x2ba/0x500 [ 72.308795][ T1926] tlb_finish_mmu+0xaa/0x190 [ 72.313351][ T1926] exit_mmap+0x382/0x850 [ 72.317561][ T1926] __mmput+0x62/0x290 [ 72.321528][ T1926] exit_mm+0x11b/0x1b0 [ 72.325675][ T1926] do_exit+0x506/0x1d50 [ 72.329799][ T1926] do_group_exit+0x1b1/0x280 [ 72.334355][ T1926] __x64_sys_exit_group+0x3f/0x40 [ 72.339364][ T1926] x64_sys_call+0x21f7/0x2200 [ 72.344008][ T1926] do_syscall_64+0x8f/0x250 [ 72.348477][ T1926] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 72.354335][ T1926] [ 72.356631][ T1926] Memory state around the buggy address: [ 72.362227][ T1926] ffff88812bbb7b00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.370255][ T1926] ffff88812bbb7b80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.378285][ T1926] >ffff88812bbb7c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.386321][ T1926] ^ [ 72.390356][ T1926] ffff88812bbb7c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.398381][ T1926] ffff88812bbb7d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 72.406406][ T1926] ================================================================== [ 72.414739][ T1926] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 72.422244][ T1926] Kernel Offset: disabled [ 72.426543][ T1926] Rebooting in 86400 seconds..