EXT4-fs error (device loop1) in ext4_mb_clear_bb:6077: Corrupt filesystem ================================================================== BUG: KASAN: out-of-bounds in ext4_ext_rm_leaf fs/ext4/extents.c:2737 [inline] BUG: KASAN: out-of-bounds in ext4_ext_remove_space+0x1e16/0x4f50 fs/ext4/extents.c:2959 Read of size 18446744073709551544 at addr ffff888125bdd054 by task syz-executor.1/1589 CPU: 1 PID: 1589 Comm: syz-executor.1 Not tainted 6.1.25-syzkaller-00070-gd3b37a712ab7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 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 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_ext_rm_leaf fs/ext4/extents.c:2737 [inline] ext4_ext_remove_space+0x1e16/0x4f50 fs/ext4/extents.c:2959 ext4_punch_hole+0x794/0xc00 fs/ext4/inode.c:4124 ext4_fallocate+0x318/0x1e90 fs/ext4/extents.c:4708 vfs_fallocate+0x492/0x570 fs/open.c:324 do_vfs_ioctl+0x2150/0x29a0 fs/ioctl.c:849 __do_sys_ioctl fs/ioctl.c:868 [inline] __se_sys_ioctl+0x99/0x190 fs/ioctl.c:856 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f46d747cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f46d82750c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f46d759c120 RCX: 00007f46d747cae9 RDX: 0000000020000080 RSI: 000000004030582b RDI: 0000000000000004 RBP: 00007f46d74c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f46d759c120 R15: 00007ffe18f0e248 The buggy address belongs to the physical page: page:ffffea000496f740 refcount:2 mapcount:0 mapping:ffff88810054c950 index:0x3a pfn:0x125bdd memcg:ffff888112cac000 aops:def_blk_aops ino:700001 flags: 0x4e00000000002056(referenced|uptodate|lru|workingset|private|zone=1) raw: 4e00000000002056 ffffea000496cd08 ffffea00046748c8 ffff88810054c950 raw: 000000000000003a ffff88811fbc0e70 00000002ffffffff ffff888112cac000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 1577, tgid 1576 (syz-executor.1), ts 220458799200, free_ts 217276015349 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x213/0x220 mm/page_alloc.c:2581 prep_new_page mm/page_alloc.c:2588 [inline] get_page_from_freelist+0x276c/0x2850 mm/page_alloc.c:4385 __alloc_pages+0x3a1/0x780 mm/page_alloc.c:5662 __folio_alloc+0x15/0x40 mm/page_alloc.c:5694 __folio_alloc_node include/linux/gfp.h:245 [inline] folio_alloc include/linux/gfp.h:274 [inline] filemap_alloc_folio include/linux/pagemap.h:474 [inline] __filemap_get_folio+0x6c0/0x970 mm/filemap.c:1976 pagecache_get_page+0x2f/0x110 mm/folio-compat.c:110 find_or_create_page include/linux/pagemap.h:615 [inline] grow_dev_page fs/buffer.c:989 [inline] grow_buffers fs/buffer.c:1054 [inline] __getblk_slow fs/buffer.c:1081 [inline] __getblk_gfp+0x205/0x7d0 fs/buffer.c:1376 sb_getblk_gfp include/linux/buffer_head.h:363 [inline] ext4_ext_grow_indepth fs/ext4/extents.c:1334 [inline] ext4_ext_create_new_leaf fs/ext4/extents.c:1435 [inline] ext4_ext_insert_extent+0xfd2/0x4e00 fs/ext4/extents.c:2102 ext4_ext_map_blocks+0x1c31/0x71e0 fs/ext4/extents.c:4308 ext4_map_blocks+0xa42/0x1ce0 fs/ext4/inode.c:651 _ext4_get_block+0x23b/0x660 fs/ext4/inode.c:808 ext4_get_block+0x39/0x50 fs/ext4/inode.c:825 ext4_block_write_begin+0x55e/0x1200 fs/ext4/inode.c:1098 ext4_write_begin+0x5e0/0xfb0 ext4_da_write_begin+0x2ff/0x920 fs/ext4/inode.c:2987 generic_perform_write+0x2f9/0x5c0 mm/filemap.c:3765 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1493 [inline] free_pcp_prepare mm/page_alloc.c:1567 [inline] free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3484 free_unref_page_list+0xf6/0x6c0 mm/page_alloc.c:3626 release_pages+0xf7f/0xfe0 mm/swap.c:1055 __pagevec_release+0x84/0x100 mm/swap.c:1075 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] shmem_undo_range+0x609/0x15b0 mm/shmem.c:949 shmem_truncate_range mm/shmem.c:1048 [inline] shmem_evict_inode+0x25f/0xa30 mm/shmem.c:1157 evict+0x2a3/0x630 fs/inode.c:664 iput_final fs/inode.c:1747 [inline] iput+0x642/0x870 fs/inode.c:1773 dentry_unlink_inode+0x34f/0x440 fs/dcache.c:401 __dentry_kill+0x447/0x650 fs/dcache.c:607 dentry_kill+0xc0/0x2a0 dput+0x160/0x310 fs/dcache.c:913 __fput+0x5f0/0x870 fs/file_table.c:328 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x24d/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x8b/0xa0 kernel/entry/common.c:171 Memory state around the buggy address: ffff888125bdcf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888125bdcf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888125bdd000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888125bdd080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888125bdd100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs error (device loop1): __ext4_get_inode_loc:4492: comm syz-executor.1: Invalid inode table block 0 in block_group 0 EXT4-fs error (device loop1) in ext4_reserve_inode_write:5841: Corrupt filesystem EXT4-fs error (device loop1): ext4_punch_hole:4137: inode #16: comm syz-executor.1: mark_inode_dirty error