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When file handle is embedded inside fanotify_event and usercopy checks
are enabled, we get a warning like:
Bad or missing usercopy whitelist? Kernel memory exposure attempt detected
from SLAB object 'fanotify_event' (offset 40, size 8)!
WARNING: CPU: 1 PID: 7649 at mm/usercopy.c:78 usercopy_warn+0xeb/0x110
mm/usercopy.c:78
Annotate handling in fanotify_event properly to mark copying it to
userspace is fine.
Reported-by: syzbot+2c49971e251e36216d1f@syzkaller.appspotmail.com
Fixes:
|
||
|---|---|---|
| .. | ||
| dnotify | ||
| fanotify | ||
| inotify | ||
| fdinfo.c | ||
| fdinfo.h | ||
| fsnotify.c | ||
| fsnotify.h | ||
| group.c | ||
| Kconfig | ||
| Makefile | ||
| mark.c | ||
| notification.c | ||