======================================================= UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x578/0x668 fs/udf/inode.c:2094 Write of size 4 at addr ffff0000cf77e3f8 by task syz-executor.0/4082 CPU: 1 PID: 4082 Comm: syz-executor.0 Not tainted 5.15.104-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_store_n_noabort+0x40/0x4c mm/kasan/report_generic.c:325 udf_write_aext+0x578/0x668 fs/udf/inode.c:2094 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681 vfs_mkdir+0x350/0x514 fs/namei.c:3994 do_mkdirat+0x20c/0x610 fs/namei.c:4019 __do_sys_mkdirat fs/namei.c:4034 [inline] __se_sys_mkdirat fs/namei.c:4032 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4032 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 4082: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc+0x29c/0x4c8 mm/slub.c:4407 kmalloc include/linux/slab.h:596 [inline] udf_alloc_i_data fs/udf/inode.c:1603 [inline] udf_read_inode fs/udf/inode.c:1406 [inline] __udf_iget+0xb14/0x3134 fs/udf/inode.c:1907 udf_iget fs/udf/udfdecl.h:151 [inline] udf_fill_super+0xfbc/0x1a7c fs/udf/super.c:2289 mount_bdev+0x26c/0x368 fs/super.c:1369 udf_mount+0x44/0x58 fs/udf/super.c:122 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1499 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000cf77e000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 504 bytes to the right of 512-byte region [ffff0000cf77e000, ffff0000cf77e200) The buggy address belongs to the page: page:00000000a2d507e4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10f77c head:00000000a2d507e4 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002600 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000cf77e280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000cf77e300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000cf77e380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000cf77e400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000cf77e480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================