UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy_from_page include/linux/highmem.h:391 [inline] BUG: KASAN: slab-out-of-bounds in udf_adinicb_writepage+0x1e4/0x3f0 fs/udf/inode.c:196 Write of size 800 at addr ffff88801d399800 by task syz-executor314/8665 CPU: 1 PID: 8665 Comm: syz-executor314 Not tainted 6.3.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:319 [inline] print_report+0x163/0x540 mm/kasan/report.c:430 kasan_report+0x176/0x1b0 mm/kasan/report.c:536 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106 memcpy_from_page include/linux/highmem.h:391 [inline] udf_adinicb_writepage+0x1e4/0x3f0 fs/udf/inode.c:196 write_cache_pages+0x89e/0x12c0 mm/page-writeback.c:2473 do_writepages+0x3a6/0x670 mm/page-writeback.c:2551 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390 __filemap_fdatawrite_range mm/filemap.c:423 [inline] file_write_and_wait_range+0x20f/0x300 mm/filemap.c:781 __generic_file_fsync+0x72/0x190 fs/libfs.c:1132 generic_file_fsync+0x73/0xf0 fs/libfs.c:1173 generic_write_sync include/linux/fs.h:2452 [inline] udf_file_write_iter+0x55b/0x660 fs/udf/file.c:126 do_iter_write+0x6ea/0xc50 fs/read_write.c:861 iter_file_splice_write+0x843/0xfe0 fs/splice.c:778 do_splice_from fs/splice.c:856 [inline] direct_splice_actor+0xe7/0x1c0 fs/splice.c:1022 splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:977 do_splice_direct+0x283/0x3d0 fs/splice.c:1065 do_sendfile+0x620/0xff0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc22ccad869 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 18 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:00007fc22cc512f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fc22cd2c7c0 RCX: 00007fc22ccad869 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007fc22ccf8e88 R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 6573726168636f69 R13: 0030656c69662f2e R14: 0031656c69662f2e R15: 00007fc22cd2c7c8 Allocated by task 8665: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0xb9/0x230 mm/slab_common.c:980 udf_new_inode+0x2e7/0xd10 udf_create+0x21/0xe0 fs/udf/namei.c:384 lookup_open fs/namei.c:3416 [inline] open_last_lookups fs/namei.c:3484 [inline] path_openat+0x13df/0x3170 fs/namei.c:3712 do_filp_open+0x234/0x490 fs/namei.c:3742 do_sys_openat2+0x13f/0x500 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_creat fs/open.c:1440 [inline] __se_sys_creat fs/open.c:1434 [inline] __x64_sys_creat+0x123/0x160 fs/open.c:1434 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88801d399800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 0 bytes inside of allocated 336-byte region [ffff88801d399800, ffff88801d399950) The buggy address belongs to the physical page: page:ffffea000074e600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d398 head:ffffea000074e600 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888012441c80 ffffea00009f6a00 dead000000000002 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 341, tgid 341 (kworker/u4:0), ts 7858900157, free_ts 0 prep_new_page mm/page_alloc.c:2552 [inline] get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4325 __alloc_pages+0x255/0x670 mm/page_alloc.c:5591 alloc_slab_page+0x6a/0x160 mm/slub.c:1851 allocate_slab mm/slub.c:1998 [inline] new_slab+0x84/0x2f0 mm/slub.c:2051 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x1b8/0x290 mm/slub.c:3491 kmalloc_trace+0x2a/0xe0 mm/slab_common.c:1061 kmalloc include/linux/slab.h:580 [inline] kzalloc include/linux/slab.h:720 [inline] alloc_bprm+0x57/0x710 fs/exec.c:1511 kernel_execve+0x96/0xa10 fs/exec.c:1985 call_usermodehelper_exec_async+0x233/0x370 kernel/umh.c:110 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 page_owner free stack trace missing Memory state around the buggy address: ffff88801d399800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88801d399880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88801d399900: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ^ ffff88801d399980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88801d399a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================