loop0: detected capacity change from 0 to 128 ------------[ cut here ]------------ name->len > NAME_MAX WARNING: fs/notify/fanotify/fanotify.h:216 at fanotify_info_copy_name fs/notify/fanotify/fanotify.h:216 [inline], CPU#0: syz.0.0/5327 WARNING: fs/notify/fanotify/fanotify.h:216 at fanotify_alloc_name_event fs/notify/fanotify/fanotify.c:686 [inline], CPU#0: syz.0.0/5327 WARNING: fs/notify/fanotify/fanotify.h:216 at fanotify_alloc_event fs/notify/fanotify/fanotify.c:851 [inline], CPU#0: syz.0.0/5327 WARNING: fs/notify/fanotify/fanotify.h:216 at fanotify_handle_event+0x313c/0x3e20 fs/notify/fanotify/fanotify.c:982, CPU#0: syz.0.0/5327 Modules linked in: CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:fanotify_info_copy_name fs/notify/fanotify/fanotify.h:216 [inline] RIP: 0010:fanotify_alloc_name_event fs/notify/fanotify/fanotify.c:686 [inline] RIP: 0010:fanotify_alloc_event fs/notify/fanotify/fanotify.c:851 [inline] RIP: 0010:fanotify_handle_event+0x313c/0x3e20 fs/notify/fanotify/fanotify.c:982 Code: 8b 24 24 e9 24 f8 ff ff e8 41 f2 6d ff 90 0f 0b 90 e9 44 f9 ff ff e8 33 f2 6d ff 90 0f 0b 90 e9 58 fa ff ff e8 25 f2 6d ff 90 <0f> 0b 90 e9 0a fc ff ff e8 17 f2 6d ff 90 0f 0b 90 e9 b1 fd ff ff RSP: 0018:ffffc9000ea2f3a0 EFLAGS: 00010287 RAX: ffffffff825694cb RBX: 0000000000000ffd RCX: 0000000000100000 RDX: ffffc9000f542000 RSI: 00000000000037f8 RDI: 00000000000037f9 RBP: ffffc9000ea2f580 R08: 0000000000000002 R09: 0000000000000000 R10: ffff88803574c038 R11: ffffffff824d5810 R12: 0000000000000ffd R13: 1ffff92001d45e8c R14: 0000000000000000 R15: ffff88803574c000 FS: 00007f880b1ea6c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f695881f000 CR3: 0000000034a47000 CR4: 0000000000352ef0 Call Trace: send_to_group fs/notify/fsnotify.c:427 [inline] fsnotify+0x142f/0x1ae0 fs/notify/fsnotify.c:648 __fsnotify_parent+0x50d/0x620 fs/notify/fsnotify.c:294 fsnotify_parent include/linux/fsnotify.h:96 [inline] fsnotify_path include/linux/fsnotify.h:113 [inline] fsnotify_file include/linux/fsnotify.h:127 [inline] fsnotify_open include/linux/fsnotify.h:446 [inline] vfs_open+0x28a/0x340 fs/open.c:1101 do_open fs/namei.c:4637 [inline] path_openat+0x3486/0x3e20 fs/namei.c:4796 do_filp_open+0x22d/0x490 fs/namei.c:4823 do_open_execat+0x164/0x5b0 fs/exec.c:783 alloc_bprm+0x28/0x5c0 fs/exec.c:1409 do_execveat_common+0x1b2/0x690 fs/exec.c:1810 do_execve fs/exec.c:1933 [inline] __do_sys_execve fs/exec.c:2009 [inline] __se_sys_execve fs/exec.c:2004 [inline] __x64_sys_execve+0x94/0xb0 fs/exec.c:2004 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f880a39aeb9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f880b1ea028 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007f880a615fa0 RCX: 00007f880a39aeb9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000003500 RBP: 00007f880a408c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f880a616038 R14: 00007f880a615fa0 R15: 00007ffe4a19a2c8