================================================================== BUG: KASAN: out-of-bounds in ext4_read_inline_data fs/ext4/inline.c:210 [inline] BUG: KASAN: out-of-bounds in ext4_read_inline_dir+0x48c/0xf60 fs/ext4/inline.c:1512 Read of size 68 at addr ffff88812aaf7d05 by task syz-executor/378 CPU: 1 PID: 378 Comm: syz-executor Not tainted 6.1.118-syzkaller-00078-ge2b9748880b9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 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_read_inline_dir+0x48c/0xf60 fs/ext4/inline.c:1512 ext4_readdir+0x3d1/0x3860 fs/ext4/dir.c:158 iterate_dir+0x265/0x600 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x1c1/0x460 fs/readdir.c:354 __x64_sys_getdents64+0x7b/0x90 fs/readdir.c:354 x64_sys_call+0x5ae/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:218 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: 0033:0x7f7d92db8693 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:00007ffecee46098 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000555563b26520 RCX: 00007f7d92db8693 RDX: 0000000000008000 RSI: 0000555563b26520 RDI: 0000000000000006 RBP: 0000555563b264f4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8 R13: 0000000000000016 R14: 0000555563b264f0 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea0004aabdc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x12aaf7 flags: 0x4000000000000000(zone=1) raw: 4000000000000000 ffffea0004aa3008 ffffea0004aabd88 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 409, tgid 408 (syz.2.18), ts 33768390712, free_ts 33776117143 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590 prep_new_page+0x1b/0x110 mm/page_alloc.c:2597 get_page_from_freelist+0x2f41/0x2fc0 mm/page_alloc.c:4462 __alloc_pages+0x234/0x610 mm/page_alloc.c:5759 __folio_alloc+0x15/0x40 mm/page_alloc.c:5791 __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+0x23b/0x1690 mm/memory.c:3202 do_wp_page+0xc5c/0xf30 handle_pte_fault mm/memory.c:5175 [inline] __handle_mm_fault mm/memory.c:5299 [inline] handle_mm_fault+0x15e0/0x30e0 mm/memory.c:5439 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:608 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+0x83d/0x850 mm/page_alloc.c:3511 free_unref_page_list+0xf1/0x7b0 mm/page_alloc.c:3659 release_pages+0xf7f/0xfe0 mm/swap.c:1063 free_pages_and_swap_cache+0x8a/0xa0 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+0x1e0/0x3f0 mm/mmu_gather.c:361 unmap_region+0x2c1/0x310 mm/mmap.c:2403 do_mas_align_munmap+0xd05/0x1400 mm/mmap.c:2670 do_mas_munmap+0x23e/0x2b0 mm/mmap.c:2728 __vm_munmap+0x263/0x3a0 mm/mmap.c:3018 __do_sys_munmap mm/mmap.c:3044 [inline] __se_sys_munmap mm/mmap.c:3040 [inline] __x64_sys_munmap+0x6b/0x80 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: ffff88812aaf7c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88812aaf7c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88812aaf7d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88812aaf7d80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88812aaf7e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== EXT4-fs error (device loop3): ext4_read_inline_dir:1593: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0 EXT4-fs error (device loop3): ext4_read_inline_dir:1593: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0 EXT4-fs error (device loop3): empty_inline_dir:1877: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=1633771873, rec_len=24929, size=60 fake=0 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs error (device loop3): ext4_read_inline_dir:1593: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0 EXT4-fs error (device loop3): ext4_read_inline_dir:1593: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0 EXT4-fs error (device loop3): empty_inline_dir:1877: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=1633771873, rec_len=24929, size=60 fake=0 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs error (device loop3): ext4_read_inline_dir:1593: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0 EXT4-fs error (device loop3): ext4_read_inline_dir:1593: inode #12: block 5: comm syz-executor: path /0/file0/file0: bad entry in directory: rec_len % 4 != 0 - offset=24, inode=1633771873, rec_len=24929, size=148 fake=0 EXT4-fs error (device loop3): empty_inline_dir:1877: inode #12: block 5: comm syz-executor: bad entry in directory: rec_len % 4 != 0 - offset=4, inode=1633771873, rec_len=24929, size=60 fake=0 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs warning (device loop3): empty_inline_dir:1884: bad inline directory (dir #12) - inode 1633771873, rec_len 24929, name_len 97inline size 60 EXT4-fs (loop3): unmounting filesystem.