=====================================================
BUG: KMSAN: uninit-value in subshift lib/crypto/aes.c:150 [inline]
BUG: KMSAN: uninit-value in aes_encrypt+0x1239/0x1960 lib/crypto/aes.c:283
 subshift lib/crypto/aes.c:150 [inline]
 aes_encrypt+0x1239/0x1960 lib/crypto/aes.c:283
 aesti_encrypt+0x3d/0xa0 crypto/aes_ti.c:31
 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+0x1383/0x30b0 fs/ext4/page-io.c:552
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2087
 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2198
 mpage_prepare_extent_to_map+0x175d/0x2660 fs/ext4/inode.c:2737
 ext4_do_writepages+0x1174/0x7770 fs/ext4/inode.c:2878
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3026
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2598
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x6f0/0x7d0 mm/filemap.c:786
 generic_buffers_fsync_noflush+0x7a/0x3f0 fs/buffer.c:609
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x586/0x12f0 fs/ext4/fsync.c:147
 vfs_fsync_range+0x1a1/0x250 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2618 [inline]
 ext4_buffered_write_iter+0xae9/0xce0 fs/ext4/file.c:305
 ext4_file_write_iter+0x25fa/0x3eb0 fs/ext4/file.c:-1
 do_iter_readv_writev+0x9e0/0xc10 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x22f/0x470 fs/read_write.c:1202
 __x64_sys_pwritev2+0xe4/0x150 fs/read_write.c:1202
 x64_sys_call+0x387b/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:329
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

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+0x1383/0x30b0 fs/ext4/page-io.c:552
 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2087
 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2198
 mpage_prepare_extent_to_map+0x175d/0x2660 fs/ext4/inode.c:2737
 ext4_do_writepages+0x1174/0x7770 fs/ext4/inode.c:2878
 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3026
 do_writepages+0x3f2/0x860 mm/page-writeback.c:2598
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x6f0/0x7d0 mm/filemap.c:786
 generic_buffers_fsync_noflush+0x7a/0x3f0 fs/buffer.c:609
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x586/0x12f0 fs/ext4/fsync.c:147
 vfs_fsync_range+0x1a1/0x250 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2618 [inline]
 ext4_buffered_write_iter+0xae9/0xce0 fs/ext4/file.c:305
 ext4_file_write_iter+0x25fa/0x3eb0 fs/ext4/file.c:-1
 do_iter_readv_writev+0x9e0/0xc10 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x22f/0x470 fs/read_write.c:1202
 __x64_sys_pwritev2+0xe4/0x150 fs/read_write.c:1202
 x64_sys_call+0x387b/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:329
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_frozen_pages_noprof+0x6df/0xf50 mm/page_alloc.c:5263
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2486
 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline]
 alloc_pages_noprof mm/mempolicy.c:2577 [inline]
 folio_alloc_noprof+0x108/0x360 mm/mempolicy.c:2587
 filemap_alloc_folio_noprof+0xd9/0x480 mm/filemap.c:1013
 __filemap_get_folio_mpol+0xb43/0x1960 mm/filemap.c:2006
 __filemap_get_folio include/linux/pagemap.h:774 [inline]
 write_begin_get_folio include/linux/pagemap.h:800 [inline]
 ext4_write_begin+0x6dd/0x2d50 fs/ext4/inode.c:1323
 generic_perform_write+0x364/0x1050 mm/filemap.c:4314
 ext4_buffered_write_iter+0x61a/0xce0 fs/ext4/file.c:299
 ext4_file_write_iter+0x25fa/0x3eb0 fs/ext4/file.c:-1
 do_iter_readv_writev+0x9e0/0xc10 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x22f/0x470 fs/read_write.c:1202
 __x64_sys_pwritev2+0xe4/0x150 fs/read_write.c:1202
 x64_sys_call+0x387b/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:329
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 14944 Comm: syz.8.2505 Tainted: G        W    L      syzkaller #0 PREEMPT(voluntary) 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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