EXT4-fs error (device loop0): ext4_read_block_bitmap_nowait:476: comm syz-executor.0: Invalid block bitmap block 0 in block_group 0 EXT4-fs (loop0): Remounting filesystem read-only EXT4-fs error (device loop0) in ext4_mb_clear_bb:6185: Corrupt filesystem ================================================================== BUG: KASAN: out-of-bounds in ext4_ext_rm_leaf fs/ext4/extents.c:2711 [inline] BUG: KASAN: out-of-bounds in ext4_ext_remove_space+0x2149/0x4a60 fs/ext4/extents.c:2933 Read of size 18446744073709551544 at addr ffff88811fe50054 by task syz-executor.0/387 CPU: 0 PID: 387 Comm: syz-executor.0 Not tainted 5.15.167-syzkaller-1075712-g5e4635681cf1 #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+0x151/0x1c0 lib/dump_stack.c:106 print_address_description+0x87/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:444 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_ext_rm_leaf fs/ext4/extents.c:2711 [inline] ext4_ext_remove_space+0x2149/0x4a60 fs/ext4/extents.c:2933 ext4_punch_hole+0x794/0xbf0 fs/ext4/inode.c:4130 ext4_fallocate+0x30c/0x1f10 fs/ext4/extents.c:4742 vfs_fallocate+0x492/0x570 fs/open.c:309 do_vfs_ioctl+0x2238/0x2a80 fs/ioctl.c:853 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl+0x99/0x190 fs/ioctl.c:860 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f2c0e085ae9 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:00007f2c058270c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f2c0e1a5050 RCX: 00007f2c0e085ae9 RDX: 0000000020000080 RSI: 000000004030582b RDI: 0000000000000004 RBP: 00007f2c0e0d147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f2c0e1a5050 R15: 00007ffea6ea1658 The buggy address belongs to the page: page:ffffea00047f9400 refcount:2 mapcount:0 mapping:ffff8881092cea98 index:0x3a pfn:0x11fe50 memcg:ffff888107ffc000 aops:def_blk_aops ino:700000 flags: 0x4000000000002036(referenced|uptodate|lru|active|private|zone=1) raw: 4000000000002036 ffffea0004352e48 ffffea000431dc88 ffff8881092cea98 raw: 000000000000003a ffff888119ed7690 00000002ffffffff ffff888107ffc000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x108c48(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE), pid 383, ts 64608807932, free_ts 45945182527 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5779 __alloc_pages_node include/linux/gfp.h:591 [inline] alloc_pages_node include/linux/gfp.h:605 [inline] alloc_pages include/linux/gfp.h:618 [inline] __page_cache_alloc include/linux/pagemap.h:305 [inline] pagecache_get_page+0xb18/0xeb0 mm/filemap.c:1946 find_or_create_page include/linux/pagemap.h:418 [inline] grow_dev_page fs/buffer.c:949 [inline] grow_buffers fs/buffer.c:1014 [inline] __getblk_slow fs/buffer.c:1041 [inline] __getblk_gfp+0x21e/0x7c0 fs/buffer.c:1336 sb_getblk_gfp include/linux/buffer_head.h:368 [inline] ext4_ext_grow_indepth fs/ext4/extents.c:1328 [inline] ext4_ext_create_new_leaf fs/ext4/extents.c:1429 [inline] ext4_ext_insert_extent+0xf7a/0x4b10 fs/ext4/extents.c:2099 ext4_ext_map_blocks+0x1d3e/0x7450 fs/ext4/extents.c:4339 ext4_map_blocks+0xa60/0x1c70 fs/ext4/inode.c:673 _ext4_get_block+0x23b/0x660 fs/ext4/inode.c:816 ext4_get_block+0x39/0x50 fs/ext4/inode.c:833 ext4_block_write_begin+0x5ea/0x12a0 fs/ext4/inode.c:1101 ext4_write_begin+0x6bc/0x13d0 ext4_da_write_begin+0x4a2/0xc30 fs/ext4/inode.c:2987 generic_perform_write+0x2bc/0x5a0 mm/filemap.c:3849 ext4_buffered_write_iter+0x48a/0x610 fs/ext4/file.c:270 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1472 [inline] free_pcp_prepare mm/page_alloc.c:1544 [inline] free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3534 free_unref_page_list+0x14b/0xa60 mm/page_alloc.c:3671 release_pages+0x1310/0x1370 mm/swap.c:1009 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:320 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu+0xd0/0x180 mm/mmu_gather.c:247 zap_pte_range mm/memory.c:1513 [inline] zap_pmd_range mm/memory.c:1562 [inline] zap_pud_range mm/memory.c:1591 [inline] zap_p4d_range mm/memory.c:1612 [inline] unmap_page_range+0x1c70/0x1ed0 mm/memory.c:1633 unmap_single_vma mm/memory.c:1678 [inline] unmap_vmas+0x389/0x560 mm/memory.c:1710 exit_mmap+0x3e4/0x940 mm/mmap.c:3215 __mmput+0x95/0x310 kernel/fork.c:1179 mmput+0x5b/0x170 kernel/fork.c:1202 exit_mm kernel/exit.c:554 [inline] do_exit+0xb9c/0x2ca0 kernel/exit.c:867 do_group_exit+0x141/0x310 kernel/exit.c:1002 get_signal+0x7a3/0x1630 kernel/signal.c:2904 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:178 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 Memory state around the buggy address: ffff88811fe4ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88811fe4ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88811fe50000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88811fe50080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88811fe50100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm syz-executor.0: Invalid inode table block 0 in block_group 0 EXT4-fs error (device loop0) in ext4_reserve_inode_write:5834: Corrupt filesystem EXT4-fs error (device loop0): ext4_punch_hole:4143: inode #16: comm syz-executor.0: mark_inode_dirty error