Warning: Permanently added '10.128.1.182' (ED25519) to the list of known hosts. executing program [ 42.804062][ T3959] loop0: detected capacity change from 0 to 512 [ 42.887215][ T3959] EXT2-fs (loop0): warning: mounting ext3 filesystem as ext2 [ 42.894526][ T3959] EXT2-fs (loop0): error: ext2_valid_block_bitmap: Invalid block bitmap - block_group = 0, block = 252 [ 42.901885][ T3959] EXT2-fs (loop0): error: ext2_free_blocks: Freeing blocks not in datazone - block = 1, count = 1 [ 42.905208][ T3959] ================================================================== [ 42.907382][ T3959] BUG: KASAN: use-after-free in ext2_valid_block_bitmap+0x10c/0x2e0 [ 42.909581][ T3959] Read of size 8 at addr ffff000198df9ff8 by task syz-executor231/3959 [ 42.911740][ T3959] [ 42.912337][ T3959] CPU: 1 PID: 3959 Comm: syz-executor231 Not tainted 5.15.153-syzkaller #0 [ 42.914635][ T3959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 42.917271][ T3959] Call trace: [ 42.918150][ T3959] dump_backtrace+0x0/0x530 [ 42.919375][ T3959] show_stack+0x2c/0x3c [ 42.920465][ T3959] dump_stack_lvl+0x108/0x170 [ 42.921711][ T3959] print_address_description+0x7c/0x3f0 [ 42.923215][ T3959] kasan_report+0x174/0x1e4 [ 42.924393][ T3959] __asan_report_load8_noabort+0x44/0x50 [ 42.925861][ T3959] ext2_valid_block_bitmap+0x10c/0x2e0 [ 42.927320][ T3959] read_block_bitmap+0x294/0x340 [ 42.928590][ T3959] ext2_free_blocks+0x280/0xa38 [ 42.929923][ T3959] ext2_free_branches+0x38c/0x3c4 [ 42.931232][ T3959] ext2_free_branches+0x180/0x3c4 [ 42.932525][ T3959] __ext2_truncate_blocks+0x93c/0xd00 [ 42.933934][ T3959] ext2_setattr+0x658/0x904 [ 42.935136][ T3959] notify_change+0xa34/0xcf8 [ 42.936340][ T3959] do_truncate+0x1c0/0x28c [ 42.937550][ T3959] path_openat+0x20e8/0x26f0 [ 42.938745][ T3959] do_filp_open+0x1a8/0x3b4 [ 42.939955][ T3959] do_sys_openat2+0x128/0x3d8 [ 42.941155][ T3959] __arm64_sys_openat+0x1f0/0x240 [ 42.942483][ T3959] invoke_syscall+0x98/0x2b8 [ 42.943718][ T3959] el0_svc_common+0x138/0x258 [ 42.944950][ T3959] do_el0_svc+0x58/0x14c [ 42.946056][ T3959] el0_svc+0x7c/0x1f0 [ 42.947115][ T3959] el0t_64_sync_handler+0x84/0xe4 [ 42.948396][ T3959] el0t_64_sync+0x1a0/0x1a4 [ 42.949604][ T3959] [ 42.950215][ T3959] The buggy address belongs to the page: [ 42.951658][ T3959] page:00000000980759ca refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d8df9 [ 42.954370][ T3959] flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) [ 42.956278][ T3959] raw: 05ffc00000000000 fffffc0006637e48 fffffc0006637e48 0000000000000000 [ 42.958512][ T3959] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 42.960851][ T3959] page dumped because: kasan: bad access detected [ 42.962514][ T3959] [ 42.963123][ T3959] Memory state around the buggy address: [ 42.964586][ T3959] ffff000198df9e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 42.966563][ T3959] ffff000198df9f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 42.968168][ T3959] >ffff000198df9f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 42.969756][ T3959] ^ [ 42.971494][ T3959] ffff000198dfa000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 42.973671][ T3959] ffff000198dfa080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 42.975763][ T3959] ================================================================== [ 42.977894][ T3959] Disabling lock debugging due to kernel taint [ 42.979857][ T3959] EXT2-fs (loop0): error: ext2_valid_block_bitmap: Invalid block bitmap - block_group = 0, block = 0 [ 42.982979][ T3959] EXT2-fs (loop0): error: ext2_free_blocks: Freeing blocks in system zones - Block = 3, count = 1 [ 42.985562][ T3959] EXT2-fs (loop0): error: ext2_free_blocks: Freeing blocks in system zones - Block = 2, count = 1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program