EXT4-fs (loop2): unmounting filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09.
==================================================================
BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma

read-write to 0xffff888237d2ac08 of 1 bytes by task 8090 on cpu 1:
 folio_batch_add include/linux/pagevec.h:77 [inline]
 folio_batch_add_and_move mm/swap.c:246 [inline]
 folio_add_lru mm/swap.c:532 [inline]
 folio_add_lru_vma+0x74/0x170 mm/swap.c:552
 set_pte_range+0x221/0x670 mm/memory.c:4679
 finish_fault+0x3fc/0x510 mm/memory.c:4757
 do_cow_fault mm/memory.c:4933 [inline]
 do_fault mm/memory.c:5026 [inline]
 do_pte_missing mm/memory.c:3880 [inline]
 handle_pte_fault mm/memory.c:5300 [inline]
 __handle_mm_fault mm/memory.c:5441 [inline]
 handle_mm_fault+0x11f3/0x27e0 mm/memory.c:5606
 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x2f5/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
 rep_stos_alternative+0x40/0x80 arch/x86/lib/clear_page_64.S:92
 __clear_user arch/x86/include/asm/uaccess_64.h:172 [inline]
 clear_user arch/x86/include/asm/uaccess_64.h:189 [inline]
 padzero fs/binfmt_elf.c:125 [inline]
 elf_load+0x394/0x520 fs/binfmt_elf.c:421
 load_elf_binary+0xb22/0x1800 fs/binfmt_elf.c:1132
 search_binary_handler fs/exec.c:1778 [inline]
 exec_binprm fs/exec.c:1820 [inline]
 bprm_execve+0x4e6/0xc60 fs/exec.c:1872
 kernel_execve+0x60f/0x670 fs/exec.c:2039
 call_usermodehelper_exec_async+0x19d/0x250 kernel/umh.c:110
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read to 0xffff888237d2ac08 of 1 bytes by task 6906 on cpu 0:
 folio_batch_count include/linux/pagevec.h:56 [inline]
 cpu_needs_drain mm/swap.c:810 [inline]
 __lru_add_drain_all+0x137/0x420 mm/swap.c:904
 lru_add_drain_all+0x10/0x20 mm/swap.c:920
 invalidate_bdev+0x54/0x80 block/bdev.c:95
 ext4_put_super+0x51b/0x7e0 fs/ext4/super.c:1361
 generic_shutdown_super+0xde/0x210 fs/super.c:641
 kill_block_super+0x2a/0x70 fs/super.c:1675
 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7327
 deactivate_locked_super+0x7d/0x1c0 fs/super.c:472
 deactivate_super+0x9f/0xb0 fs/super.c:505
 cleanup_mnt+0x272/0x2e0 fs/namespace.c:1267
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1274
 task_work_run+0x13a/0x1a0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xbe/0x130 kernel/entry/common.c:218
 do_syscall_64+0xda/0x1d0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00 -> 0x01

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6906 Comm: syz-executor.2 Not tainted 6.9.0-rc5-syzkaller-00159-gc942a0cd3603 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
==================================================================
EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000.
EXT4-fs error (device loop2): htree_dirblock_to_tree:1111: inode #2: block 13: comm syz-executor.2: bad entry in directory: rec_len is smaller than minimal - offset=76, inode=0, rec_len=0, size=1024 fake=0
EXT4-fs error (device loop2): ext4_lookup:1858: inode #2: comm syz-executor.2: deleted inode referenced: 15
EXT4-fs error (device loop2): ext4_lookup:1858: inode #2: comm syz-executor.2: deleted inode referenced: 15
EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000.