=====================================================
BUG: KMSAN: uninit-value in subshift lib/crypto/aes.c:149 [inline]
BUG: KMSAN: uninit-value in aes_encrypt+0x1239/0x1960 lib/crypto/aes.c:282
 subshift lib/crypto/aes.c:149 [inline]
 aes_encrypt+0x1239/0x1960 lib/crypto/aes.c:282
 aesti_encrypt+0x7d/0xf0 crypto/aes_ti.c:31
 crypto_ecb_crypt crypto/ecb.c:23 [inline]
 crypto_ecb_encrypt2+0x13f/0x300 crypto/ecb.c:40
 crypto_lskcipher_crypt_sg+0x3a9/0x930 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+0x187/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x4a0/0x920 fs/crypto/crypto.c:144
 fscrypt_encrypt_pagecache_blocks+0x38c/0x770 fs/crypto/crypto.c:205
 ext4_bio_write_folio+0x135d/0x30a0 fs/ext4/page-io.c:552
 mpage_submit_folio+0x37b/0x4d0 fs/ext4/inode.c:1937
 mpage_process_page_bufs+0xb05/0xe00 fs/ext4/inode.c:2050
 mpage_process_folio fs/ext4/inode.c:2104 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2173 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2315 [inline]
 ext4_do_writepages+0x2d57/0x69e0 fs/ext4/inode.c:2739
 ext4_writepages+0x338/0x870 fs/ext4/inode.c:2829
 do_writepages+0x445/0xcb0 mm/page-writeback.c:2656
 __writeback_single_inode+0x101/0x1190 fs/fs-writeback.c:1680
 writeback_sb_inodes+0xaa9/0x1c90 fs/fs-writeback.c:1976
 wb_writeback+0x4ce/0xc00 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x397/0x1910 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xb97/0x1d90 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd59/0xf00 kernel/kthread.c:464
 ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:153
 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+0x566/0xbd0 crypto/xts.c:123
 xts_xor_tweak_pre crypto/xts.c:135 [inline]
 xts_encrypt+0x278/0x570 crypto/xts.c:268
 crypto_skcipher_encrypt+0x187/0x1e0 crypto/skcipher.c:444
 fscrypt_crypt_data_unit+0x4a0/0x920 fs/crypto/crypto.c:144
 fscrypt_encrypt_pagecache_blocks+0x38c/0x770 fs/crypto/crypto.c:205
 ext4_bio_write_folio+0x135d/0x30a0 fs/ext4/page-io.c:552
 mpage_submit_folio+0x37b/0x4d0 fs/ext4/inode.c:1937
 mpage_process_page_bufs+0xb05/0xe00 fs/ext4/inode.c:2050
 mpage_process_folio fs/ext4/inode.c:2104 [inline]
 mpage_map_and_submit_buffers fs/ext4/inode.c:2173 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2315 [inline]
 ext4_do_writepages+0x2d57/0x69e0 fs/ext4/inode.c:2739
 ext4_writepages+0x338/0x870 fs/ext4/inode.c:2829
 do_writepages+0x445/0xcb0 mm/page-writeback.c:2656
 __writeback_single_inode+0x101/0x1190 fs/fs-writeback.c:1680
 writeback_sb_inodes+0xaa9/0x1c90 fs/fs-writeback.c:1976
 wb_writeback+0x4ce/0xc00 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x397/0x1910 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xb97/0x1d90 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd59/0xf00 kernel/kthread.c:464
 ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:4993
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2301
 alloc_frozen_pages_noprof mm/mempolicy.c:2372 [inline]
 alloc_pages_noprof mm/mempolicy.c:2392 [inline]
 folio_alloc_noprof+0x109/0x360 mm/mempolicy.c:2402
 filemap_alloc_folio_noprof+0x9d/0x420 mm/filemap.c:1007
 __filemap_get_folio+0xb45/0x1930 mm/filemap.c:1969
 ext4_write_begin+0x476/0x24d0 fs/ext4/inode.c:1187
 ext4_da_write_begin+0x773/0x1020 fs/ext4/inode.c:2932
 generic_perform_write+0x3f4/0x10c0 mm/filemap.c:4103
 ext4_buffered_write_iter+0x61a/0xce0 fs/ext4/file.c:299
 ext4_file_write_iter+0x2a2/0x3d90 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0xb31/0x1560 fs/read_write.c:684
 ksys_write fs/read_write.c:736 [inline]
 __do_sys_write fs/read_write.c:747 [inline]
 __se_sys_write fs/read_write.c:744 [inline]
 __x64_sys_write+0x1fb/0x4d0 fs/read_write.c:744
 x64_sys_call+0x38c3/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 3504 Comm: kworker/u8:12 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:8)
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