EXT4-fs (loop1): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: writeback. ext4 filesystem being mounted at /25/file0 supports timestamps until 2038-01-19 (0x7fffffff) ===================================================== BUG: KMSAN: uninit-value in enc_quarterround lib/crypto/aes.c:330 [inline] BUG: KMSAN: uninit-value in aes_encrypt_generic lib/crypto/aes.c:368 [inline] BUG: KMSAN: uninit-value in aes_encrypt_arch lib/crypto/aes.c:464 [inline] BUG: KMSAN: uninit-value in aes_encrypt+0x92d/0x11b0 lib/crypto/aes.c:504 enc_quarterround lib/crypto/aes.c:330 [inline] aes_encrypt_generic lib/crypto/aes.c:368 [inline] aes_encrypt_arch lib/crypto/aes.c:464 [inline] aes_encrypt+0x92d/0x11b0 lib/crypto/aes.c:504 crypto_aes_encrypt+0x3f/0x50 crypto/aes.c:26 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+0x138c/0x32a0 fs/ext4/page-io.c:553 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2080 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2191 mpage_prepare_extent_to_map+0x175d/0x2660 fs/ext4/inode.c:2730 ext4_do_writepages+0x11a0/0x7950 fs/ext4/inode.c:2871 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3019 do_writepages+0x3f2/0x860 mm/page-writeback.c:2554 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:607 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline] ext4_sync_file+0x586/0x13a0 fs/ext4/fsync.c:147 vfs_fsync_range+0x135/0x1c0 fs/sync.c:186 generic_write_sync include/linux/fs.h:2640 [inline] ext4_buffered_write_iter+0xae9/0xce0 fs/ext4/file.c:306 ext4_file_write_iter+0x24b4/0x3d80 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+0x17f/0x3f0 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+0x138c/0x32a0 fs/ext4/page-io.c:553 mpage_submit_folio+0x399/0x3d0 fs/ext4/inode.c:2080 mpage_process_page_bufs+0xaef/0xf50 fs/ext4/inode.c:2191 mpage_prepare_extent_to_map+0x175d/0x2660 fs/ext4/inode.c:2730 ext4_do_writepages+0x11a0/0x7950 fs/ext4/inode.c:2871 ext4_writepages+0x337/0x870 fs/ext4/inode.c:3019 do_writepages+0x3f2/0x860 mm/page-writeback.c:2554 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:607 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline] ext4_sync_file+0x586/0x13a0 fs/ext4/fsync.c:147 vfs_fsync_range+0x135/0x1c0 fs/sync.c:186 generic_write_sync include/linux/fs.h:2640 [inline] ext4_buffered_write_iter+0xae9/0xce0 fs/ext4/file.c:306 ext4_file_write_iter+0x24b4/0x3d80 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+0x17f/0x3f0 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+0x6f7/0x1020 mm/page_alloc.c:5273 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2485 alloc_frozen_pages_noprof mm/mempolicy.c:2556 [inline] alloc_pages_noprof mm/mempolicy.c:2576 [inline] folio_alloc_noprof+0x108/0x360 mm/mempolicy.c:2586 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/0x2db0 fs/ext4/inode.c:1316 ext4_da_write_begin+0x75e/0x1490 fs/ext4/inode.c:3123 generic_perform_write+0x364/0x1050 mm/filemap.c:4314 ext4_buffered_write_iter+0x61a/0xce0 fs/ext4/file.c:300 ext4_file_write_iter+0x24b4/0x3d80 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+0x17f/0x3f0 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: 6843 Comm: syz.1.154 Tainted: G W syzkaller #0 PREEMPT(full) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 =====================================================