loop0: detected capacity change from 0 to 512 UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) loop0: detected capacity change from 512 to 511 ================================================================== BUG: KASAN: slab-out-of-bounds in crc_itu_t+0x1d5/0x2b0 lib/crc-itu-t.c:60 Read of size 1 at addr ffff88800047a1e8 by task syz.0.0/5119 CPU: 0 UID: 0 PID: 5119 Comm: syz.0.0 Not tainted 6.11.0-rc7-syzkaller-00151-gd42f7708e27c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 crc_itu_t+0x1d5/0x2b0 lib/crc-itu-t.c:60 udf_update_tag+0x70/0x6a0 fs/udf/misc.c:261 udf_write_aext+0x4d8/0x7b0 fs/udf/inode.c:2146 extent_trunc+0x2f7/0x4a0 fs/udf/truncate.c:46 udf_truncate_extents+0x627/0x12d0 fs/udf/truncate.c:251 udf_setsize+0xe85/0x1280 fs/udf/inode.c:1289 udf_setattr+0x3c7/0x5d0 fs/udf/file.c:236 notify_change+0xbca/0xe90 fs/attr.c:503 do_truncate+0x220/0x310 fs/open.c:65 handle_truncate fs/namei.c:3381 [inline] do_open fs/namei.c:3731 [inline] path_openat+0x2ced/0x3470 fs/namei.c:3886 do_filp_open+0x235/0x490 fs/namei.c:3913 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416 do_sys_open fs/open.c:1431 [inline] __do_sys_creat fs/open.c:1507 [inline] __se_sys_creat fs/open.c:1501 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1501 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0f54d7def9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0f55bf4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f0f54f35f80 RCX: 00007f0f54d7def9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000020000240 RBP: 00007f0f54df0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0f54f35f80 R15: 00007fff29d9c3e8 Allocated by task 1: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_krealloc+0xf2/0x150 mm/kasan/common.c:457 kasan_krealloc include/linux/kasan.h:231 [inline] __do_krealloc mm/slab_common.c:1276 [inline] krealloc_noprof+0xba/0x120 mm/slab_common.c:1313 add_sysfs_param+0xca/0x7f0 kernel/params.c:654 kernel_add_sysfs_param+0xb4/0x130 kernel/params.c:817 param_sysfs_builtin+0x16e/0x1f0 kernel/params.c:856 param_sysfs_builtin_init+0x31/0x40 kernel/params.c:990 do_one_initcall+0x248/0x880 init/main.c:1267 do_initcall_level+0x157/0x210 init/main.c:1329 do_initcalls+0x3f/0x80 init/main.c:1345 kernel_init_freeable+0x435/0x5d0 init/main.c:1578 kernel_init+0x1d/0x2b0 init/main.c:1467 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff88800047a000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 0 bytes to the right of allocated 488-byte region [ffff88800047a000, ffff88800047a1e8) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x47a head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x7ff00000000040(head|node=0|zone=0|lastcpupid=0x7ff) page_type: 0xfdffffff(slab) raw: 007ff00000000040 ffff88801ac41c80 ffffea000047a000 dead000000000005 raw: 0000000000000000 0000000000080008 00000001fdffffff 0000000000000000 head: 007ff00000000040 ffff88801ac41c80 ffffea000047a000 dead000000000005 head: 0000000000000000 0000000000080008 00000001fdffffff 0000000000000000 head: 007ff00000000001 ffffea0000011e81 ffffffffffffffff 0000000000000000 head: 0000000000000002 0000000000000000 00000000ffffffff 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 29586542629, free_ts 29519270006 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1500 prep_new_page mm/page_alloc.c:1508 [inline] get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3446 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2325 allocate_slab+0x5a/0x2f0 mm/slub.c:2488 new_slab mm/slub.c:2541 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3727 __slab_alloc+0x58/0xa0 mm/slub.c:3817 __slab_alloc_node mm/slub.c:3870 [inline] slab_alloc_node mm/slub.c:4029 [inline] __do_kmalloc_node mm/slub.c:4161 [inline] __kmalloc_node_track_caller_noprof+0x281/0x440 mm/slub.c:4181 __do_krealloc mm/slab_common.c:1280 [inline] krealloc_noprof+0x7d/0x120 mm/slab_common.c:1313 add_sysfs_param+0xca/0x7f0 kernel/params.c:654 kernel_add_sysfs_param+0xb4/0x130 kernel/params.c:817 param_sysfs_builtin+0x16e/0x1f0 kernel/params.c:856 param_sysfs_builtin_init+0x31/0x40 kernel/params.c:990 do_one_initcall+0x248/0x880 init/main.c:1267 do_initcall_level+0x157/0x210 init/main.c:1329 do_initcalls+0x3f/0x80 init/main.c:1345 page last free pid 9 tgid 9 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1101 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2619 vfree+0x186/0x2e0 mm/vmalloc.c:3367 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3288 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x870/0xd30 kernel/workqueue.c:3393 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff88800047a080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800047a100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88800047a180: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc ^ ffff88800047a200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88800047a280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================