UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2105 Write of size 4 at addr ffff0000c9a60bf0 by task syz-executor126/4222 CPU: 1 PID: 4222 Comm: syz-executor126 Not tainted 6.1.69-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 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_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2105 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681 vfs_mkdir+0x334/0x4e4 fs/namei.c:4037 do_mkdirat+0x220/0x510 fs/namei.c:4062 __do_sys_mkdirat fs/namei.c:4077 [inline] __se_sys_mkdirat fs/namei.c:4075 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4075 __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 Allocated by task 3916: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc+0xd8/0x1c4 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] kzalloc include/linux/slab.h:689 [inline] tomoyo_init_log+0x1558/0x19c4 security/tomoyo/audit.c:275 tomoyo_supervisor+0x370/0x1070 security/tomoyo/common.c:2088 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission+0x1f4/0x2fc security/tomoyo/file.c:587 tomoyo_check_open_permission+0x384/0x3f4 security/tomoyo/file.c:780 tomoyo_file_open+0x130/0x19c security/tomoyo/tomoyo.c:320 security_file_open+0x6c/0xb0 security/security.c:1663 do_dentry_open+0x2a0/0xfa0 fs/open.c:869 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3558 [inline] path_openat+0x1e14/0x2548 fs/namei.c:3715 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __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 Freed by task 3916: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x2c0/0x4b4 mm/slub.c:3674 kfree+0xcc/0x1b8 mm/slab_common.c:1007 tomoyo_supervisor+0xdc0/0x1070 security/tomoyo/common.c:2140 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission+0x1f4/0x2fc security/tomoyo/file.c:587 tomoyo_check_open_permission+0x384/0x3f4 security/tomoyo/file.c:780 tomoyo_file_open+0x130/0x19c security/tomoyo/tomoyo.c:320 security_file_open+0x6c/0xb0 security/security.c:1663 do_dentry_open+0x2a0/0xfa0 fs/open.c:869 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3558 [inline] path_openat+0x1e14/0x2548 fs/namei.c:3715 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __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 The buggy address belongs to the object at ffff0000c9a60800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff0000c9a60800, ffff0000c9a60a00) The buggy address belongs to the physical page: page:00000000c1581f0b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x109a60 head:00000000c1581f0b order:2 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000001 ffff0000c0002600 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c9a60a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000c9a60b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000c9a60b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff0000c9a60c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000c9a60c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================