EXT4-fs (loop3): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: none.
ext4 filesystem being mounted at /12/mnt supports timestamps until 2038-01-19 (0x7fffffff)
fscrypt: AES-256-XTS using implementation "xts(ecb(aes-fixed-time))"
=====================================================
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+0x142/0x300 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:194
 xts_encrypt+0x2e1/0x570 crypto/xts.c:269
 crypto_skcipher_encrypt+0x187/0x1e0 crypto/skcipher.c:195
 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+0x1383/0x30d0 fs/ext4/page-io.c:552
 mpage_submit_folio+0x37b/0x580 fs/ext4/inode.c:2057
 mpage_map_and_submit_buffers fs/ext4/inode.c:2303 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2439 [inline]
 ext4_do_writepages+0x2f75/0x6b00 fs/ext4/inode.c:2863
 ext4_writepages+0x338/0x870 fs/ext4/inode.c:2953
 do_writepages+0x3ef/0x860 mm/page-writeback.c:2636
 filemap_fdatawrite_wbc mm/filemap.c:386 [inline]
 __filemap_fdatawrite_range mm/filemap.c:419 [inline]
 file_write_and_wait_range+0x6f0/0x7d0 mm/filemap.c:794
 generic_buffers_fsync_noflush+0x79/0x3c0 fs/buffer.c:609
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x587/0x12f0 fs/ext4/fsync.c:147
 vfs_fsync_range+0x1a1/0x240 fs/sync.c:187
 generic_write_sync include/linux/fs.h:3031 [inline]
 ext4_buffered_write_iter+0xae9/0xce0 fs/ext4/file.c:305
 ext4_file_write_iter+0x2a2/0x3d90 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0xb4b/0x1580 fs/read_write.c:686
 ksys_pwrite64+0x1d6/0x2a0 fs/read_write.c:793
 __do_sys_ia32_pwrite64 arch/x86/kernel/sys_ia32.c:78 [inline]
 __se_sys_ia32_pwrite64 arch/x86/kernel/sys_ia32.c:75 [inline]
 __ia32_sys_ia32_pwrite64+0xf0/0x150 arch/x86/kernel/sys_ia32.c:75
 ia32_sys_call+0x2228/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:182
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

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:195
 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+0x1383/0x30d0 fs/ext4/page-io.c:552
 mpage_submit_folio+0x37b/0x580 fs/ext4/inode.c:2057
 mpage_map_and_submit_buffers fs/ext4/inode.c:2303 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2439 [inline]
 ext4_do_writepages+0x2f75/0x6b00 fs/ext4/inode.c:2863
 ext4_writepages+0x338/0x870 fs/ext4/inode.c:2953
 do_writepages+0x3ef/0x860 mm/page-writeback.c:2636
 filemap_fdatawrite_wbc mm/filemap.c:386 [inline]
 __filemap_fdatawrite_range mm/filemap.c:419 [inline]
 file_write_and_wait_range+0x6f0/0x7d0 mm/filemap.c:794
 generic_buffers_fsync_noflush+0x79/0x3c0 fs/buffer.c:609
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x587/0x12f0 fs/ext4/fsync.c:147
 vfs_fsync_range+0x1a1/0x240 fs/sync.c:187
 generic_write_sync include/linux/fs.h:3031 [inline]
 ext4_buffered_write_iter+0xae9/0xce0 fs/ext4/file.c:305
 ext4_file_write_iter+0x2a2/0x3d90 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0xb4b/0x1580 fs/read_write.c:686
 ksys_pwrite64+0x1d6/0x2a0 fs/read_write.c:793
 __do_sys_ia32_pwrite64 arch/x86/kernel/sys_ia32.c:78 [inline]
 __se_sys_ia32_pwrite64 arch/x86/kernel/sys_ia32.c:75 [inline]
 __ia32_sys_ia32_pwrite64+0xf0/0x150 arch/x86/kernel/sys_ia32.c:75
 ia32_sys_call+0x2228/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:182
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:4982
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof mm/mempolicy.c:2510 [inline]
 folio_alloc_noprof+0x109/0x360 mm/mempolicy.c:2520
 filemap_alloc_folio_noprof+0x9d/0x420 mm/filemap.c:1007
 __filemap_get_folio+0xb45/0x1930 mm/filemap.c:1980
 ext4_write_begin+0x541/0x2990 fs/ext4/inode.c:1298
 ext4_da_write_begin+0x759/0x13f0 fs/ext4/inode.c:3057
 generic_perform_write+0x3f7/0x10c0 mm/filemap.c:4112
 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:593 [inline]
 vfs_write+0xb4b/0x1580 fs/read_write.c:686
 ksys_pwrite64+0x1d6/0x2a0 fs/read_write.c:793
 __do_sys_ia32_pwrite64 arch/x86/kernel/sys_ia32.c:78 [inline]
 __se_sys_ia32_pwrite64 arch/x86/kernel/sys_ia32.c:75 [inline]
 __ia32_sys_ia32_pwrite64+0xf0/0x150 arch/x86/kernel/sys_ia32.c:75
 ia32_sys_call+0x2228/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:182
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 13205 Comm: syz.3.1548 Not tainted 6.16.0-rc3-syzkaller-00319-gded779017ad7 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
=====================================================