[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 48.457303][ T8452] loop0: detected capacity change from 4096 to 0 [ 48.465720][ T8452] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 48.475382][ T8452] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 48.489747][ T8452] EXT4-fs (loop0): mount failed [ 54.440061][ T8451] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888110a90cc0 (size 64): comm "syz-executor687", pid 8452, jiffies 4294942118 (age 8.050s) hex dump (first 32 bytes): 00 48 49 05 81 88 ff ff 00 00 00 00 00 00 00 00 .HI............. 00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00 ............H... backtrace: [<000000001207dc34>] v2_read_file_info+0x1ae/0x430 [<000000007930a62d>] dquot_load_quota_sb+0x351/0x650 [<00000000963d958f>] dquot_load_quota_inode+0xda/0x160 [<000000003b55d998>] ext4_enable_quotas+0x1b2/0x2f0 [<00000000921b3c5e>] ext4_fill_super+0x3fa5/0x5ad0 [<00000000b48b2920>] mount_bdev+0x223/0x260 [<00000000bd6c8909>] legacy_get_tree+0x2b/0x90 [<000000003c79d47e>] vfs_get_tree+0x28/0x100 [<000000006a473ab5>] path_mount+0xc5e/0x1170 [<00000000d2ec803b>] __x64_sys_mount+0x18e/0x1d0 [<00000000385b04a3>] do_syscall_64+0x2d/0x70 [<000000001f229daa>] entry_SYSCALL_64_after_hwframe+0x44/0xa9