memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5030 'syz-executor137'
loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
==================================================================
BUG: KASAN: use-after-free in crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60
Read of size 1 at addr ffff888075007000 by task syz-executor137/5030

CPU: 0 PID: 5030 Comm: syz-executor137 Not tainted 6.5.0-rc4-next-20230731-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60
 udf_finalize_lvid+0xf2/0x1f0 fs/udf/super.c:1984
 udf_close_lvid+0x462/0x5c0 fs/udf/super.c:2052
 udf_put_super+0x19c/0x200 fs/udf/super.c:2322
 generic_shutdown_super+0x158/0x480 fs/super.c:499
 kill_block_super+0x3b/0xc0 fs/super.c:1416
 deactivate_locked_super+0x9a/0x170 fs/super.c:330
 deactivate_super+0xde/0x100 fs/super.c:361
 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
 task_work_run+0x14d/0x240 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa99/0x2a20 kernel/exit.c:876
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1026
 __do_sys_exit_group kernel/exit.c:1037 [inline]
 __se_sys_exit_group kernel/exit.c:1035 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1035
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1197f53489
Code: Unable to access opcode bytes at 0x7f1197f5345f.
RSP: 002b:00007ffe825aa958 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f1197f53489
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f1197ffc390 R08: ffffffffffffffb0 R09: 0000000000000000
R10: 0000000000000022 R11: 0000000000000246 R12: 00007f1197ffc390
R13: 0000000000000000 R14: 00007f1197ffd100 R15: 00007f1197f1dfd0
 </TASK>

The buggy address belongs to the physical page:
page:ffffea0001d401c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x75007
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 ffffea0001d61208 ffffea0001cd1308 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 4889, tgid 4889 (sshd), ts 34261659102, free_ts 34291460707
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1569
 prep_new_page mm/page_alloc.c:1576 [inline]
 get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3256
 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4512
 __folio_alloc+0x16/0x40 mm/page_alloc.c:4544
 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2253
 do_anonymous_page mm/memory.c:4259 [inline]
 do_pte_missing mm/memory.c:3816 [inline]
 handle_pte_fault mm/memory.c:5136 [inline]
 __handle_mm_fault+0x2385/0x4030 mm/memory.c:5276
 handle_mm_fault+0x47a/0xa00 mm/memory.c:5441
 do_user_addr_fault+0x2e7/0xfe0 arch/x86/mm/fault.c:1342
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1160 [inline]
 free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2383
 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2524
 release_pages+0x32a/0x14e0 mm/swap.c:1042
 tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:97
 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
 tlb_flush_mmu mm/mmu_gather.c:299 [inline]
 tlb_finish_mmu+0x14b/0x6f0 mm/mmu_gather.c:391
 unmap_region.constprop.0+0x2e6/0x3b0 mm/mmap.c:2312
 do_vmi_align_munmap+0xde3/0x15f0 mm/mmap.c:2546
 do_vmi_munmap+0x20e/0x450 mm/mmap.c:2614
 __vm_munmap+0x144/0x390 mm/mmap.c:2899
 __do_sys_munmap mm/mmap.c:2916 [inline]
 __se_sys_munmap mm/mmap.c:2913 [inline]
 __x64_sys_munmap+0x62/0x80 mm/mmap.c:2913
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff888075006f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888075006f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888075007000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff888075007080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888075007100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================