=====================================================
BUG: KMSAN: uninit-value in enc_quarterround lib/crypto/aes.c:333 [inline]
BUG: KMSAN: uninit-value in aes_encrypt_generic lib/crypto/aes.c:371 [inline]
BUG: KMSAN: uninit-value in aes_encrypt_arch lib/crypto/aes.c:467 [inline]
BUG: KMSAN: uninit-value in aes_encrypt+0x92d/0x11b0 lib/crypto/aes.c:507
 enc_quarterround lib/crypto/aes.c:333 [inline]
 aes_encrypt_generic lib/crypto/aes.c:371 [inline]
 aes_encrypt_arch lib/crypto/aes.c:467 [inline]
 aes_encrypt+0x92d/0x11b0 lib/crypto/aes.c:507
 crypto_aes_encrypt+0x3f/0x50 crypto/aes.c:28
 cipher_crypt_one+0x120/0x2e0 crypto/cipher.c:75
 crypto_cipher_encrypt_one+0x33/0x40 crypto/cipher.c:82
 adiantum_crypt+0xa77/0x1a70 crypto/adiantum.c:421
 adiantum_encrypt+0x33/0x40 crypto/adiantum.c:489
 crypto_skcipher_encrypt+0x18a/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x38e/0x590 fs/crypto/crypto.c:139
 fscrypt_encrypt_pagecache_blocks+0x3ce/0x800 fs/crypto/crypto.c:197
 ext4_bio_write_folio+0x139f/0x3110 fs/ext4/page-io.c:572
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2103
 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2214
 mpage_process_folio fs/ext4/inode.c:2267 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2336 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2536 [inline]
 ext4_do_writepages+0x3a87/0x7850 fs/ext4/inode.c:2948
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3042
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2571
 __writeback_single_inode+0x101/0x10a0 fs/fs-writeback.c:1764
 writeback_sb_inodes+0xb1a/0x1d50 fs/fs-writeback.c:2056
 __writeback_inodes_wb+0x14e/0x480 fs/fs-writeback.c:2132
 wb_writeback+0x4ff/0xc50 fs/fs-writeback.c:2243
 wb_check_start_all fs/fs-writeback.c:2369 [inline]
 wb_do_writeback fs/fs-writeback.c:2395 [inline]
 wb_workfn+0xe13/0x1970 fs/fs-writeback.c:2428
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3397
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3478
 kthread+0x53a/0x5f0 kernel/kthread.c:436
 ret_from_fork+0x20f/0x8d0 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_add crypto/adiantum.c:178 [inline]
 adiantum_crypt+0x1113/0x1a70 crypto/adiantum.c:417
 adiantum_encrypt+0x33/0x40 crypto/adiantum.c:489
 crypto_skcipher_encrypt+0x18a/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x38e/0x590 fs/crypto/crypto.c:139
 fscrypt_encrypt_pagecache_blocks+0x3ce/0x800 fs/crypto/crypto.c:197
 ext4_bio_write_folio+0x139f/0x3110 fs/ext4/page-io.c:572
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2103
 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2214
 mpage_process_folio fs/ext4/inode.c:2267 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2336 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2536 [inline]
 ext4_do_writepages+0x3a87/0x7850 fs/ext4/inode.c:2948
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3042
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2571
 __writeback_single_inode+0x101/0x10a0 fs/fs-writeback.c:1764
 writeback_sb_inodes+0xb1a/0x1d50 fs/fs-writeback.c:2056
 __writeback_inodes_wb+0x14e/0x480 fs/fs-writeback.c:2132
 wb_writeback+0x4ff/0xc50 fs/fs-writeback.c:2243
 wb_check_start_all fs/fs-writeback.c:2369 [inline]
 wb_do_writeback fs/fs-writeback.c:2395 [inline]
 wb_workfn+0xe13/0x1970 fs/fs-writeback.c:2428
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3397
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3478
 kthread+0x53a/0x5f0 kernel/kthread.c:436
 ret_from_fork+0x20f/0x8d0 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:
 adiantum_crypt+0x801/0x1a70 crypto/adiantum.c:409
 adiantum_encrypt+0x33/0x40 crypto/adiantum.c:489
 crypto_skcipher_encrypt+0x18a/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x38e/0x590 fs/crypto/crypto.c:139
 fscrypt_encrypt_pagecache_blocks+0x3ce/0x800 fs/crypto/crypto.c:197
 ext4_bio_write_folio+0x139f/0x3110 fs/ext4/page-io.c:572
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2103
 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2214
 mpage_process_folio fs/ext4/inode.c:2267 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2336 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2536 [inline]
 ext4_do_writepages+0x3a87/0x7850 fs/ext4/inode.c:2948
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3042
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2571
 __writeback_single_inode+0x101/0x10a0 fs/fs-writeback.c:1764
 writeback_sb_inodes+0xb1a/0x1d50 fs/fs-writeback.c:2056
 __writeback_inodes_wb+0x14e/0x480 fs/fs-writeback.c:2132
 wb_writeback+0x4ff/0xc50 fs/fs-writeback.c:2243
 wb_check_start_all fs/fs-writeback.c:2369 [inline]
 wb_do_writeback fs/fs-writeback.c:2395 [inline]
 wb_workfn+0xe13/0x1970 fs/fs-writeback.c:2428
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xb65/0x1e40 kernel/workqueue.c:3397
 worker_thread+0xee4/0x1590 kernel/workqueue.c:3478
 kthread+0x53a/0x5f0 kernel/kthread.c:436
 ret_from_fork+0x20f/0x8d0 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+0x6fa/0x1000 mm/page_alloc.c:5249
 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:1014
 __filemap_get_folio_mpol+0xb43/0x1960 mm/filemap.c:2012
 __filemap_get_folio include/linux/pagemap.h:763 [inline]
 write_begin_get_folio include/linux/pagemap.h:789 [inline]
 ext4_write_begin+0x6e3/0x2d80 fs/ext4/inode.c:1331
 ext4_da_write_begin+0x75e/0x1450 fs/ext4/inode.c:3152
 generic_perform_write+0x364/0x1050 mm/filemap.c:4325
 ext4_buffered_write_iter+0x178/0x7b0 fs/ext4/file.c:316
 ext4_file_write_iter+0x104c/0x3880 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0xbe1/0x15c0 fs/read_write.c:688
 ksys_write+0x1d9/0x470 fs/read_write.c:740
 __do_sys_write fs/read_write.c:751 [inline]
 __se_sys_write fs/read_write.c:748 [inline]
 __x64_sys_write+0x97/0xf0 fs/read_write.c:748
 x64_sys_call+0x2ff0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:2
 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: 1 UID: 0 PID: 11869 Comm: kworker/u8:26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: writeback wb_workfn (flush-7:7)
=====================================================