=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:121 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_user+0x1c9/0x270 lib/usercopy.c:33
 instrument_copy_to_user include/linux/instrumented.h:121 [inline]
 _copy_to_user+0x1c9/0x270 lib/usercopy.c:33
 copy_to_user include/linux/uaccess.h:209 [inline]
 devkmsg_read+0xa2f/0x1160 kernel/printk/printk.c:761
 vfs_read+0x6c8/0x1980 fs/read_write.c:483
 ksys_read+0x28c/0x520 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:631
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Uninit was stored to memory at:
 vsnprintf+0x33d6/0x36a0 lib/vsprintf.c:2786
 vscnprintf lib/vsprintf.c:2900 [inline]
 scnprintf+0x23c/0x340 lib/vsprintf.c:2954
 info_print_ext_header kernel/printk/printk.c:567 [inline]
 devkmsg_read+0x6d1/0x1160 kernel/printk/printk.c:749
 vfs_read+0x6c8/0x1980 fs/read_write.c:483
 ksys_read+0x28c/0x520 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0xdb/0x120 fs/read_write.c:631
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable name created at:
 __fsnotify_parent+0x235/0xfc0 fs/notify/fsnotify.c:191
 fsnotify_parent include/linux/fsnotify.h:77 [inline]
 fsnotify_file include/linux/fsnotify.h:99 [inline]
 fsnotify_perm+0x702/0xa80 include/linux/fsnotify.h:124

Byte 19 of 132 is uninitialized
Memory access of size 132 starts at ffff8881140f8050
Data copied to user address 00007ffd1599cb10
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