=====================================================
BUG: KMSAN: uninit-value in enc_quarterround lib/crypto/aes.c:330 [inline]
BUG: KMSAN: uninit-value in aes_encrypt_generic lib/crypto/aes.c:368 [inline]
BUG: KMSAN: uninit-value in aes_encrypt_arch lib/crypto/aes.c:464 [inline]
BUG: KMSAN: uninit-value in aes_encrypt+0x92d/0x11b0 lib/crypto/aes.c:504
 enc_quarterround lib/crypto/aes.c:330 [inline]
 aes_encrypt_generic lib/crypto/aes.c:368 [inline]
 aes_encrypt_arch lib/crypto/aes.c:464 [inline]
 aes_encrypt+0x92d/0x11b0 lib/crypto/aes.c:504
 crypto_aes_encrypt+0x3f/0x50 crypto/aes.c:26
 crypto_ecb_crypt crypto/ecb.c:23 [inline]
 crypto_ecb_encrypt2+0x142/0x300 crypto/ecb.c:40
 crypto_lskcipher_crypt_sg+0x3ad/0x960 crypto/lskcipher.c:188
 crypto_lskcipher_encrypt_sg+0x8b/0xc0 crypto/lskcipher.c:207
 crypto_skcipher_encrypt+0x111/0x1e0 crypto/skcipher.c:443
 xts_encrypt+0x2e1/0x570 crypto/xts.c:269
 crypto_skcipher_encrypt+0x18a/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x38e/0x590 fs/crypto/crypto.c:139
 fscrypt_encrypt_pagecache_blocks+0x430/0x900 fs/crypto/crypto.c:197
 ext4_bio_write_folio+0x13a7/0x32c0 fs/ext4/page-io.c:559
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2090
 mpage_map_and_submit_buffers fs/ext4/inode.c:2333 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2523 [inline]
 ext4_do_writepages+0x3c75/0x7950 fs/ext4/inode.c:2935
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3029
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2575
 __writeback_single_inode+0x101/0x11c0 fs/fs-writeback.c:1762
 writeback_sb_inodes+0xb3b/0x1d90 fs/fs-writeback.c:2054
 wb_writeback+0x4f1/0xcd0 fs/fs-writeback.c:2239
 wb_do_writeback fs/fs-writeback.c:2386 [inline]
 wb_workfn+0x3b9/0x19b0 fs/fs-writeback.c:2426
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb82/0x1e80 kernel/workqueue.c:3359
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3440
 kthread+0x53f/0x600 kernel/kthread.c:436
 ret_from_fork+0x20f/0x910 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was stored to memory at:
 le128_xor include/crypto/b128ops.h:69 [inline]
 xts_xor_tweak+0x576/0xa90 crypto/xts.c:123
 xts_xor_tweak_pre crypto/xts.c:135 [inline]
 xts_encrypt+0x278/0x570 crypto/xts.c:268
 crypto_skcipher_encrypt+0x18a/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x38e/0x590 fs/crypto/crypto.c:139
 fscrypt_encrypt_pagecache_blocks+0x430/0x900 fs/crypto/crypto.c:197
 ext4_bio_write_folio+0x13a7/0x32c0 fs/ext4/page-io.c:559
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2090
 mpage_map_and_submit_buffers fs/ext4/inode.c:2333 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2523 [inline]
 ext4_do_writepages+0x3c75/0x7950 fs/ext4/inode.c:2935
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3029
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2575
 __writeback_single_inode+0x101/0x11c0 fs/fs-writeback.c:1762
 writeback_sb_inodes+0xb3b/0x1d90 fs/fs-writeback.c:2054
 wb_writeback+0x4f1/0xcd0 fs/fs-writeback.c:2239
 wb_do_writeback fs/fs-writeback.c:2386 [inline]
 wb_workfn+0x3b9/0x19b0 fs/fs-writeback.c:2426
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb82/0x1e80 kernel/workqueue.c:3359
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3440
 kthread+0x53f/0x600 kernel/kthread.c:436
 ret_from_fork+0x20f/0x910 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was created at:
 __alloc_frozen_pages_noprof+0x6f7/0x1020 mm/page_alloc.c:5273
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2490
 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline]
 alloc_pages_noprof mm/mempolicy.c:2581 [inline]
 folio_alloc_noprof+0x108/0x370 mm/mempolicy.c:2591
 filemap_alloc_folio_noprof+0xd9/0x480 mm/filemap.c:1013
 __filemap_get_folio_mpol+0xb43/0x1960 mm/filemap.c:2011
 __filemap_get_folio include/linux/pagemap.h:763 [inline]
 write_begin_get_folio include/linux/pagemap.h:789 [inline]
 ext4_write_begin+0x6dd/0x2db0 fs/ext4/inode.c:1326
 ext4_da_write_begin+0x75e/0x1490 fs/ext4/inode.c:3133
 generic_perform_write+0x364/0x1050 mm/filemap.c:4324
 ext4_buffered_write_iter+0x61a/0xce0 fs/ext4/file.c:300
 ext4_file_write_iter+0x24b4/0x3d80 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0xbe1/0x15c0 fs/read_write.c:688
 ksys_pwrite64 fs/read_write.c:795 [inline]
 __do_sys_pwrite64 fs/read_write.c:803 [inline]
 __se_sys_pwrite64 fs/read_write.c:800 [inline]
 __x64_sys_pwrite64+0x2ab/0x3b0 fs/read_write.c:800
 x64_sys_call+0xbef/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:19
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x134/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 7455 Comm: kworker/u8:16 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: writeback wb_workfn (flush-7:8)
=====================================================