===================================================== BUG: KMSAN: uninit-value in memcmp lib/string.c:692 [inline] BUG: KMSAN: uninit-value in bcmp+0x186/0x1c0 lib/string.c:713 memcmp lib/string.c:692 [inline] bcmp+0x186/0x1c0 lib/string.c:713 fanotify_fh_equal fs/notify/fanotify/fanotify.c:51 [inline] fanotify_fid_event_equal fs/notify/fanotify/fanotify.c:72 [inline] fanotify_should_merge fs/notify/fanotify/fanotify.c:168 [inline] fanotify_merge+0x15f5/0x27e0 fs/notify/fanotify/fanotify.c:209 fsnotify_insert_event+0x1d0/0x600 fs/notify/notification.c:113 fanotify_handle_event+0x47f7/0x6140 fs/notify/fanotify/fanotify.c:966 send_to_group fs/notify/fsnotify.c:360 [inline] fsnotify+0x2510/0x3530 fs/notify/fsnotify.c:570 fsnotify_parent include/linux/fsnotify.h:80 [inline] fsnotify_file include/linux/fsnotify.h:100 [inline] fsnotify_close include/linux/fsnotify.h:362 [inline] __fput+0x578/0x10c0 fs/file_table.c:368 __fput_sync+0x74/0x90 fs/file_table.c:467 __do_sys_close fs/open.c:1554 [inline] __se_sys_close+0x28a/0x4c0 fs/open.c:1539 __x64_sys_close+0x48/0x60 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x579/0xa90 mm/slub.c:3502 fanotify_alloc_fid_event fs/notify/fanotify/fanotify.c:584 [inline] fanotify_alloc_event fs/notify/fanotify/fanotify.c:817 [inline] fanotify_handle_event+0x2ff6/0x6140 fs/notify/fanotify/fanotify.c:952 send_to_group fs/notify/fsnotify.c:360 [inline] fsnotify+0x2510/0x3530 fs/notify/fsnotify.c:570 fsnotify_parent include/linux/fsnotify.h:80 [inline] fsnotify_file include/linux/fsnotify.h:100 [inline] fsnotify_close include/linux/fsnotify.h:362 [inline] __fput+0x578/0x10c0 fs/file_table.c:368 __fput_sync+0x74/0x90 fs/file_table.c:467 __do_sys_close fs/open.c:1554 [inline] __se_sys_close+0x28a/0x4c0 fs/open.c:1539 __x64_sys_close+0x48/0x60 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 5010 Comm: syz-executor120 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 =====================================================