[ 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 '10.128.0.66' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.641212][ T8476] loop0: detected capacity change from 4096 to 0 [ 52.650587][ T8476] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 52.660215][ T8476] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 52.674842][ T8476] EXT4-fs (loop0): mount failed executing program [ 58.376403][ T8484] loop0: detected capacity change from 4096 to 0 [ 58.385087][ T8484] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 58.395213][ T8484] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 58.410179][ T8484] EXT4-fs (loop0): mount failed executing program [ 64.174053][ T8491] loop0: detected capacity change from 4096 to 0 [ 64.182591][ T8491] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 64.192277][ T8491] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 64.206743][ T8491] EXT4-fs (loop0): mount failed executing program [ 69.822940][ T8499] loop0: detected capacity change from 4096 to 0 [ 69.831396][ T8499] Quota error (device loop0): v2_read_file_info: Free block number too big (0 >= 0). [ 69.840959][ T8499] EXT4-fs warning (device loop0): ext4_enable_quotas:6430: Failed to enable quota tracking (type=0, err=-117). Please run e2fsck to fix. [ 69.855178][ T8499] EXT4-fs (loop0): mount failed [ 71.118738][ T8475] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak) BUG: memory leak unreferenced object 0xffff888111d63e00 (size 64): comm "syz-executor928", pid 8491, jiffies 4294943684 (age 13.590s) hex dump (first 32 bytes): 00 98 6b 0d 81 88 ff ff 00 00 00 00 00 00 00 00 ..k............. 00 00 00 00 00 00 00 00 0a 00 00 00 48 00 00 00 ............H... backtrace: [<0000000082b193b0>] v2_read_file_info+0x1ae/0x430 [<0000000064e4493f>] dquot_load_quota_sb+0x351/0x650 [<000000000b25d4d0>] dquot_load_quota_inode+0xda/0x160 [<0000000062b8786e>] ext4_enable_quotas+0x1b2/0x2f0 [<000000007f4efd02>] ext4_fill_super+0x3fa5/0x5ad0 [<00000000d1b0255f>] mount_bdev+0x223/0x260 [<000000002384ece9>] legacy_get_tree+0x2b/0x90 [<000000004a78eed9>] vfs_get_tree+0x28/0x100 [<0000000026625bd9>] path_mount+0xc5e/0x1170 [<00000000affd9830>] __x64_sys_mount+0x18e/0x1d0 [<0000000006825007>] do_syscall_64+0x2d/0x70 [<000000000ca59d78>] entry_SYSCALL_64_after_hwframe+0x44/0xa9