fscrypt: AES-256-CBC-CTS using implementation "cts(cbc(ecb(aes-lib)))"
fscrypt: AES-256-XTS using implementation "xts(ecb(aes-lib))"
=====================================================
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
 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+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_prepare_extent_to_map+0x175d/0x2660 fs/ext4/inode.c:2753
 ext4_do_writepages+0x117f/0x7850 fs/ext4/inode.c:2894
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3042
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2571
 filemap_writeback mm/filemap.c:388 [inline]
 filemap_fdatawrite_range mm/filemap.c:413 [inline]
 file_write_and_wait_range+0x6f0/0x7d0 mm/filemap.c:787
 mmb_fsync_noflush+0x82/0x3a0 fs/buffer.c:645
 ext4_fsync_nojournal fs/ext4/fsync.c:92 [inline]
 ext4_sync_file+0x619/0x1490 fs/ext4/fsync.c:160
 vfs_fsync_range+0x135/0x1c0 fs/sync.c:186
 generic_write_sync include/linux/fs.h:2654 [inline]
 ext4_buffered_write_iter+0x5b3/0x7b0 fs/ext4/file.c:322
 ext4_file_write_iter+0x104c/0x3880 fs/ext4/file.c:-1
 do_iter_readv_writev+0x9e0/0xc10 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1059
 do_pwritev fs/read_write.c:1155 [inline]
 __do_compat_sys_pwritev2 fs/read_write.c:1300 [inline]
 __se_compat_sys_pwritev2 fs/read_write.c:1292 [inline]
 __ia32_compat_sys_pwritev2+0x43d/0x6b0 fs/read_write.c:1292
 ia32_sys_call+0x3b67/0x4360 arch/x86/include/generated/asm/syscalls_32.h:380
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x180/0x460 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

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+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_prepare_extent_to_map+0x175d/0x2660 fs/ext4/inode.c:2753
 ext4_do_writepages+0x117f/0x7850 fs/ext4/inode.c:2894
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3042
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2571
 filemap_writeback mm/filemap.c:388 [inline]
 filemap_fdatawrite_range mm/filemap.c:413 [inline]
 file_write_and_wait_range+0x6f0/0x7d0 mm/filemap.c:787
 mmb_fsync_noflush+0x82/0x3a0 fs/buffer.c:645
 ext4_fsync_nojournal fs/ext4/fsync.c:92 [inline]
 ext4_sync_file+0x619/0x1490 fs/ext4/fsync.c:160
 vfs_fsync_range+0x135/0x1c0 fs/sync.c:186
 generic_write_sync include/linux/fs.h:2654 [inline]
 ext4_buffered_write_iter+0x5b3/0x7b0 fs/ext4/file.c:322
 ext4_file_write_iter+0x104c/0x3880 fs/ext4/file.c:-1
 do_iter_readv_writev+0x9e0/0xc10 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1059
 do_pwritev fs/read_write.c:1155 [inline]
 __do_compat_sys_pwritev2 fs/read_write.c:1300 [inline]
 __se_compat_sys_pwritev2 fs/read_write.c:1292 [inline]
 __ia32_compat_sys_pwritev2+0x43d/0x6b0 fs/read_write.c:1292
 ia32_sys_call+0x3b67/0x4360 arch/x86/include/generated/asm/syscalls_32.h:380
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x180/0x460 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

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
 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
 do_iter_readv_writev+0x9e0/0xc10 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1059
 do_pwritev fs/read_write.c:1155 [inline]
 __do_compat_sys_pwritev2 fs/read_write.c:1300 [inline]
 __se_compat_sys_pwritev2 fs/read_write.c:1292 [inline]
 __ia32_compat_sys_pwritev2+0x43d/0x6b0 fs/read_write.c:1292
 ia32_sys_call+0x3b67/0x4360 arch/x86/include/generated/asm/syscalls_32.h:380
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x180/0x460 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 1 UID: 0 PID: 12002 Comm: syz.3.1854 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
=====================================================