=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline]
BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x364/0x2520 lib/iov_iter.c:186
 instrument_copy_to_user include/linux/instrumented.h:114 [inline]
 copy_to_user_iter lib/iov_iter.c:24 [inline]
 iterate_ubuf include/linux/iov_iter.h:29 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:245 [inline]
 iterate_and_advance include/linux/iov_iter.h:271 [inline]
 _copy_to_iter+0x364/0x2520 lib/iov_iter.c:186
 copy_page_to_iter+0x419/0x870 lib/iov_iter.c:381
 copy_folio_to_iter include/linux/uio.h:181 [inline]
 filemap_read+0xbf4/0x14d0 mm/filemap.c:2653
 blkdev_read_iter+0x6c0/0x8e0 block/fops.c:742
 call_read_iter include/linux/fs.h:2014 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x8f6/0xe00 fs/read_write.c:470
 ksys_read+0x20f/0x4c0 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x93/0xd0 fs/read_write.c:621
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was stored to memory at:
 do_journal_end+0x4ae8/0x83c0 fs/reiserfs/journal.c:4213
 journal_end+0x31a/0x3c0 fs/reiserfs/journal.c:3415
 restart_transaction+0x199/0x2c0 fs/reiserfs/inode.c:268
 reiserfs_get_block+0x30db/0x6500 fs/reiserfs/inode.c:1106
 __block_write_begin_int+0x946/0x2c70 fs/buffer.c:2119
 __block_write_begin+0xcb/0x250 fs/buffer.c:2168
 reiserfs_write_begin+0x6ec/0x1170 fs/reiserfs/inode.c:2767
 generic_cont_expand_simple+0x168/0x340 fs/buffer.c:2473
 reiserfs_setattr+0x14b3/0x1ee0 fs/reiserfs/inode.c:3298
 notify_change+0x19fd/0x1af0 fs/attr.c:499
 do_truncate+0x22a/0x2a0 fs/open.c:66
 do_sys_ftruncate+0x81c/0xb30 fs/open.c:194
 __do_sys_ftruncate fs/open.c:205 [inline]
 __se_sys_ftruncate fs/open.c:203 [inline]
 __x64_sys_ftruncate+0x71/0xa0 fs/open.c:203
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
 __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4591
 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133
 alloc_pages mm/mempolicy.c:2204 [inline]
 folio_alloc+0x1da/0x380 mm/mempolicy.c:2211
 filemap_alloc_folio+0xa5/0x430 mm/filemap.c:974
 __filemap_get_folio+0xa5a/0x1760 mm/filemap.c:1918
 grow_dev_page fs/buffer.c:1041 [inline]
 grow_buffers fs/buffer.c:1106 [inline]
 __getblk_slow fs/buffer.c:1133 [inline]
 bdev_getblk+0x3e5/0x1790 fs/buffer.c:1429
 __getblk include/linux/buffer_head.h:358 [inline]
 sb_getblk include/linux/buffer_head.h:364 [inline]
 get_empty_nodes+0x99c/0xd90 fs/reiserfs/fix_node.c:890
 fix_nodes+0xb80a/0x13ca0 fs/reiserfs/fix_node.c:2663
 reiserfs_paste_into_item+0x74a/0xb00 fs/reiserfs/stree.c:2129
 reiserfs_get_block+0x2de6/0x6500 fs/reiserfs/inode.c:1069
 __block_write_begin_int+0x946/0x2c70 fs/buffer.c:2119
 __block_write_begin+0xcb/0x250 fs/buffer.c:2168
 reiserfs_write_begin+0x6ec/0x1170 fs/reiserfs/inode.c:2767
 generic_cont_expand_simple+0x168/0x340 fs/buffer.c:2473
 reiserfs_setattr+0x14b3/0x1ee0 fs/reiserfs/inode.c:3298
 notify_change+0x19fd/0x1af0 fs/attr.c:499
 do_truncate+0x22a/0x2a0 fs/open.c:66
 do_sys_ftruncate+0x81c/0xb30 fs/open.c:194
 __do_sys_ftruncate fs/open.c:205 [inline]
 __se_sys_ftruncate fs/open.c:203 [inline]
 __x64_sys_ftruncate+0x71/0xa0 fs/open.c:203
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Bytes 6-23 of 512 are uninitialized
Memory access of size 512 starts at ffff88804e774000
Data copied to user address 0000558eead41cc8

CPU: 1 PID: 5506 Comm: udevd Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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