syzbot

ext4 filesystem being mounted at /root/mnt supports timestamps until 2038-01-19 (0x7fffffff)
fscrypt: AES-256-XTS using implementation "xts(ecb(aes-fixed-time))"
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BUG: KMSAN: uninit-value in subshift lib/crypto/aes.c:149 [inline]
BUG: KMSAN: uninit-value in aes_encrypt+0x15cc/0x1db0 lib/crypto/aes.c:282
 subshift lib/crypto/aes.c:149 [inline]
 aes_encrypt+0x15cc/0x1db0 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+0x18a/0x300 crypto/ecb.c:40
 crypto_lskcipher_crypt_sg+0x36b/0x7f0 crypto/lskcipher.c:188
 crypto_lskcipher_encrypt_sg+0x8a/0xc0 crypto/lskcipher.c:207
 crypto_skcipher_encrypt+0x119/0x1e0 crypto/skcipher.c:642
 xts_encrypt+0x3c4/0x550 crypto/xts.c:269
 crypto_skcipher_encrypt+0x1a0/0x1e0 crypto/skcipher.c:643
 fscrypt_crypt_data_unit+0x4ee/0x8f0 fs/crypto/crypto.c:144
 fscrypt_encrypt_pagecache_blocks+0x422/0x900 fs/crypto/crypto.c:207
 ext4_bio_write_folio+0x1377/0x2e50 fs/ext4/page-io.c:525
 mpage_submit_folio+0x360/0x490 fs/ext4/inode.c:1932
 mpage_map_and_submit_buffers fs/ext4/inode.c:2178 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2310 [inline]
 ext4_do_writepages+0x3713/0x62c0 fs/ext4/inode.c:2735
 ext4_writepages+0x312/0x830 fs/ext4/inode.c:2824
 do_writepages+0x427/0xc30 mm/page-writeback.c:2702
 filemap_fdatawrite_wbc mm/filemap.c:397 [inline]
 __filemap_fdatawrite_range mm/filemap.c:430 [inline]
 file_write_and_wait_range+0x6f2/0x7b0 mm/filemap.c:787
 generic_buffers_fsync_noflush+0x7e/0x3c0 fs/buffer.c:600
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x5ae/0x1390 fs/ext4/fsync.c:151
 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187
 generic_write_sync include/linux/fs.h:2904 [inline]
 ext4_buffered_write_iter+0x9a7/0xaa0 fs/ext4/file.c:305
 ext4_file_write_iter+0x266/0x3820
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xb2b/0x1540 fs/read_write.c:679
 ksys_pwrite64 fs/read_write.c:786 [inline]
 __do_sys_pwrite64 fs/read_write.c:794 [inline]
 __se_sys_pwrite64 fs/read_write.c:791 [inline]
 __x64_sys_pwrite64+0x2c5/0x3b0 fs/read_write.c:791
 x64_sys_call+0xc16/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:19
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 le128_xor include/crypto/b128ops.h:69 [inline]
 xts_xor_tweak+0x4ae/0xbf0 crypto/xts.c:123
 xts_xor_tweak_pre crypto/xts.c:135 [inline]
 xts_encrypt+0x296/0x550 crypto/xts.c:268
 crypto_skcipher_encrypt+0x1a0/0x1e0 crypto/skcipher.c:643
 fscrypt_crypt_data_unit+0x4ee/0x8f0 fs/crypto/crypto.c:144
 fscrypt_encrypt_pagecache_blocks+0x422/0x900 fs/crypto/crypto.c:207
 ext4_bio_write_folio+0x1377/0x2e50 fs/ext4/page-io.c:525
 mpage_submit_folio+0x360/0x490 fs/ext4/inode.c:1932
 mpage_map_and_submit_buffers fs/ext4/inode.c:2178 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2310 [inline]
 ext4_do_writepages+0x3713/0x62c0 fs/ext4/inode.c:2735
 ext4_writepages+0x312/0x830 fs/ext4/inode.c:2824
 do_writepages+0x427/0xc30 mm/page-writeback.c:2702
 filemap_fdatawrite_wbc mm/filemap.c:397 [inline]
 __filemap_fdatawrite_range mm/filemap.c:430 [inline]
 file_write_and_wait_range+0x6f2/0x7b0 mm/filemap.c:787
 generic_buffers_fsync_noflush+0x7e/0x3c0 fs/buffer.c:600
 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline]
 ext4_sync_file+0x5ae/0x1390 fs/ext4/fsync.c:151
 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187
 generic_write_sync include/linux/fs.h:2904 [inline]
 ext4_buffered_write_iter+0x9a7/0xaa0 fs/ext4/file.c:305
 ext4_file_write_iter+0x266/0x3820
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xb2b/0x1540 fs/read_write.c:679
 ksys_pwrite64 fs/read_write.c:786 [inline]
 __do_sys_pwrite64 fs/read_write.c:794 [inline]
 __se_sys_pwrite64 fs/read_write.c:791 [inline]
 __x64_sys_pwrite64+0x2c5/0x3b0 fs/read_write.c:791
 x64_sys_call+0xc16/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:19
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4774
 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265
 alloc_pages_noprof mm/mempolicy.c:2344 [inline]
 folio_alloc_noprof+0x1db/0x310 mm/mempolicy.c:2351
 filemap_alloc_folio_noprof+0xa6/0x440 mm/filemap.c:1009
 __filemap_get_folio+0xac4/0x1550 mm/filemap.c:1951
 ext4_write_begin+0x3e5/0x23d0 fs/ext4/inode.c:1182
 ext4_da_write_begin+0x4cd/0xea0 fs/ext4/inode.c:2925
 generic_perform_write+0x4d8/0x1080 mm/filemap.c:4055
 ext4_buffered_write_iter+0x561/0xaa0 fs/ext4/file.c:299
 ext4_file_write_iter+0x266/0x3820
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xb2b/0x1540 fs/read_write.c:679
 ksys_pwrite64 fs/read_write.c:786 [inline]
 __do_sys_pwrite64 fs/read_write.c:794 [inline]
 __se_sys_pwrite64 fs/read_write.c:791 [inline]
 __x64_sys_pwrite64+0x2c5/0x3b0 fs/read_write.c:791
 x64_sys_call+0xc16/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:19
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 5781 Comm: syz-executor375 Not tainted 6.13.0-rc1-syzkaller-00005-gceb8bf2ceaa7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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