[ 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 '10.128.1.61' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.750536][ T8478] loop0: detected capacity change from 4096 to 0 [ 47.759503][ T8478] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 47.769014][ T8478] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 47.783487][ T8478] EXT4-fs (loop0): mount failed executing program [ 52.997204][ T8486] loop0: detected capacity change from 4096 to 0 [ 53.005088][ T8486] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 53.014615][ T8486] EXT4-fs warning (device loop0): ext4_enable_quotas:6384: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 53.028796][ T8486] EXT4-fs (loop0): mount failed [ 54.109978][ T8477] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff88810da0e7c0 (size 64): comm "syz-executor215", pid 8478, jiffies 4294942038 (age 12.520s) hex dump (first 32 bytes): 00 e8 93 0d 81 88 ff ff 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00 ............H... backtrace: [<000000009bc7da77>] v2_read_file_info+0x1ae/0x430 [<00000000250ed6fe>] dquot_load_quota_sb+0x351/0x650 [<00000000971916f1>] dquot_load_quota_inode+0xda/0x160 [<00000000c77b7404>] ext4_enable_quotas+0x1b2/0x2f0 [<000000001d09bdfa>] ext4_fill_super+0x3fa5/0x5ad0 [<00000000e3c15cfa>] mount_bdev+0x223/0x260 [<00000000463fba3b>] legacy_get_tree+0x2b/0x90 [<0000000017324969>] vfs_get_tree+0x28/0x100 [<0000000026576098>] path_mount+0xc5e/0x1170 [<0000000031351add>] __x64_sys_mount+0x18e/0x1d0 [<00000000232be4b4>] do_syscall_64+0x2d/0x70 [<0000000065a33f13>] entry_SYSCALL_64_after_hwframe+0x44/0xa9