loop0: detected capacity change from 0 to 2048 UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0x52 != 0x00 UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_readdir+0xc5f/0x2240 fs/udf/dir.c:182 Write of size 201 at addr ffff888013a64636 by task syz-executor378/3544 CPU: 0 PID: 3544 Comm: syz-executor378 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memcpy+0x3c/0x60 mm/kasan/shadow.c:66 udf_readdir+0xc5f/0x2240 fs/udf/dir.c:182 iterate_dir+0x224/0x560 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f94dca6dab9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffaba83f68 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f94dca6dab9 RDX: 0000000000000ff9 RSI: 0000000020001280 RDI: 0000000000000005 RBP: 00007f94dcae1610 R08: 0000000000000000 R09: 00007fffaba84138 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fffaba84128 R14: 0000000000000001 R15: 0000000000000001 Allocated by task 3544: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:556 [inline] udf_readdir+0xb78/0x2240 fs/udf/dir.c:172 iterate_dir+0x224/0x560 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff888013a64600 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 54 bytes inside of 256-byte region [ffff888013a64600, ffff888013a64700) The buggy address belongs to the physical page: page:ffffea00004e9900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x13a64 head:ffffea00004e9900 order:1 compound_mapcount:0 compound_pincount:0 flags: 0xfff80000010200(slab|head|node=0|zone=1|lastcpupid=0xfff) raw: 00fff80000010200 ffffea00004e9a80 dead000000000002 ffff888012441b40 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 2528782905, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5547 alloc_page_interleave+0x22/0x1c0 mm/mempolicy.c:2115 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node_track_caller+0xa0/0x220 mm/slab_common.c:975 __do_krealloc mm/slab_common.c:1348 [inline] krealloc+0x61/0xf0 mm/slab_common.c:1381 add_sysfs_param+0xca/0x7f0 kernel/params.c:651 kernel_add_sysfs_param+0xb0/0x126 kernel/params.c:812 param_sysfs_builtin+0x16a/0x1e2 kernel/params.c:851 param_sysfs_init+0x66/0x6a kernel/params.c:970 do_one_initcall+0x265/0x8f0 init/main.c:1297 do_initcall_level+0x157/0x207 init/main.c:1370 page_owner free stack trace missing Memory state around the buggy address: ffff888013a64580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888013a64600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888013a64680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06 ^ ffff888013a64700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888013a64780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================