EXT2-fs (loop0): error: ext2_valid_block_bitmap: Invalid block bitmap - block_group = 0, block = 252
==================================================================
BUG: KASAN: wild-memory-access in generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
BUG: KASAN: wild-memory-access in test_bit_le include/asm-generic/bitops/le.h:21 [inline]
BUG: KASAN: wild-memory-access in ext2_valid_block_bitmap fs/ext2/balloc.c:88 [inline]
BUG: KASAN: wild-memory-access in read_block_bitmap+0x338/0x628 fs/ext2/balloc.c:155
Read of size 8 at addr 1fff0000e3929ff8 by task syz-executor.0/10793

CPU: 0 PID: 10793 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_report+0xe4/0x4c0 mm/kasan/report.c:398
 kasan_report+0xd4/0x130 mm/kasan/report.c:495
 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351
 generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
 test_bit_le include/asm-generic/bitops/le.h:21 [inline]
 ext2_valid_block_bitmap fs/ext2/balloc.c:88 [inline]
 read_block_bitmap+0x338/0x628 fs/ext2/balloc.c:155
 ext2_free_blocks+0x280/0xa28 fs/ext2/balloc.c:516
 ext2_free_data fs/ext2/inode.c:1098 [inline]
 ext2_free_branches+0x38c/0x3c4 fs/ext2/inode.c:1146
 ext2_free_branches+0x180/0x3c4 fs/ext2/inode.c:1137
 __ext2_truncate_blocks+0x93c/0xd00 fs/ext2/inode.c:1212
 ext2_setsize fs/ext2/inode.c:1278 [inline]
 ext2_setattr+0x8e8/0xbcc fs/ext2/inode.c:1648
 notify_change+0xb58/0xe1c fs/attr.c:499
 do_truncate+0x1c0/0x28c fs/open.c:65
 do_sys_ftruncate+0x288/0x31c fs/open.c:193
 __do_sys_ftruncate fs/open.c:204 [inline]
 __se_sys_ftruncate fs/open.c:202 [inline]
 __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
==================================================================
EXT2-fs (loop0): error: ext2_valid_block_bitmap: Invalid block bitmap - block_group = 0, block = 0
EXT2-fs (loop0): error: ext2_free_blocks: Freeing blocks in system zones - Block = 3, count = 1
EXT2-fs (loop0): error: ext2_free_blocks: Freeing blocks in system zones - Block = 2, count = 1