[ 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 '10.128.1.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.470289][ T8437] loop0: detected capacity change from 4096 to 0 [ 52.479006][ T8437] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 52.488512][ T8437] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 52.502892][ T8437] EXT4-fs (loop0): mount failed executing program [ 57.610891][ T8445] loop0: detected capacity change from 4096 to 0 [ 57.619954][ T8445] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 57.630031][ T8445] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 57.645433][ T8445] EXT4-fs (loop0): mount failed [ 58.710327][ T8436] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff8881108be800 (size 64): comm "syz-executor533", pid 8437, jiffies 4294942519 (age 12.300s) hex dump (first 32 bytes): 00 f0 4c 0d 81 88 ff ff 00 00 00 00 00 00 00 00 ..L............. 00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00 ............H... backtrace: [<00000000e21f4d10>] v2_read_file_info+0x1ae/0x430 [<0000000091533842>] dquot_load_quota_sb+0x351/0x650 [<000000005807031f>] dquot_load_quota_inode+0xda/0x160 [<000000006b782b19>] ext4_enable_quotas+0x1b2/0x2f0 [<00000000c5261037>] ext4_fill_super+0x3fa5/0x5ad0 [<0000000099778391>] mount_bdev+0x223/0x260 [<0000000033d66664>] legacy_get_tree+0x2b/0x90 [<000000006bc89f4d>] vfs_get_tree+0x28/0x100 [<00000000f4691d68>] path_mount+0xc5e/0x1170 [<0000000095cf9712>] __x64_sys_mount+0x18e/0x1d0 [<000000009b17f5e4>] do_syscall_64+0x2d/0x70 [<000000008e30ae72>] entry_SYSCALL_64_after_hwframe+0x44/0xa9