[ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.123' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.077749][ T8476] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue [ 52.103046][ T8476] Quota error (device loop0): qtree_write_dquot: Error -669470953 occurred while creating quota [ 52.128905][ T8476] Quota error (device loop0): qtree_write_dquot: Error -1224736762 occurred while creating quota [ 52.139953][ T8476] EXT4-fs error (device loop0): __ext4_new_inode:1067: comm syz-executor912: reserved inode found cleared - inode=1 [ 52.157803][ T8476] BUG: unable to handle page fault for address: fffffbfff6e00022 [ 52.165637][ T8476] #PF: supervisor read access in kernel mode [ 52.171600][ T8476] #PF: error_code(0x0000) - not-present page [ 52.177546][ T8476] PGD 23ffe9067 P4D 23ffe9067 PUD 23ffe8067 PMD 0 [ 52.184026][ T8476] Oops: 0000 [#1] PREEMPT SMP KASAN [ 52.189192][ T8476] CPU: 0 PID: 8476 Comm: syz-executor912 Not tainted 5.10.0-rc6-syzkaller #0 [ 52.197917][ T8476] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.208312][ T8476] RIP: 0010:check_memory_region+0xdb/0x180 [ 52.214182][ T8476] Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c [ 52.235478][ T8476] RSP: 0018:ffffc90000eaf6b0 EFLAGS: 00010286 [ 52.241787][ T8476] RAX: fffffbfff6e00022 RBX: fffffbfff6e00024 RCX: ffffffff81dfd4df [ 52.249725][ T8476] RDX: fffffbfff6e00024 RSI: 0000000000000004 RDI: ffffffffb7000116 [ 52.258089][ T8476] RBP: fffffbfff6e00022 R08: 0000000000000000 R09: ffffffffb7000119 [ 52.266029][ T8476] R10: fffffbfff6e00023 R11: 0000000000000000 R12: ffffffffb7000136 [ 52.274020][ T8476] R13: ffffffffb7000116 R14: 0000000000000009 R15: 1ffffffff6e00022 [ 52.282070][ T8476] FS: 000000000120a880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 52.290975][ T8476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.297724][ T8476] CR2: fffffbfff6e00022 CR3: 0000000012cc6000 CR4: 0000000000350ef0 [ 52.305764][ T8476] Call Trace: [ 52.309034][ T8476] dqput.part.0+0xaf/0x870 [ 52.313428][ T8476] __dquot_drop+0x19c/0x270 [ 52.317901][ T8476] ? dquot_get_next_dqblk+0x180/0x180 [ 52.323250][ T8476] ? ext4_mark_group_bitmap_corrupted+0x52e/0x6b0 [ 52.329633][ T8476] dquot_drop+0x14b/0x1a0 [ 52.333931][ T8476] __ext4_new_inode+0x2ba6/0x5520 [ 52.338923][ T8476] ? ext4_mark_inode_used+0x14a0/0x14a0 [ 52.344536][ T8476] ? dquot_initialize_needed+0x290/0x290 [ 52.350136][ T8476] ext4_tmpfile+0x208/0x480 [ 52.354615][ T8476] ? ext4_orphan_add+0xb90/0xb90 [ 52.359537][ T8476] ? _raw_spin_unlock+0x24/0x40 [ 52.364355][ T8476] ? d_alloc+0x1bc/0x230 [ 52.368564][ T8476] vfs_tmpfile+0x201/0x380 [ 52.372953][ T8476] path_openat+0x1667/0x2730 [ 52.377508][ T8476] ? path_lookupat+0x830/0x830 [ 52.382241][ T8476] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.388187][ T8476] do_filp_open+0x17e/0x3c0 [ 52.392677][ T8476] ? may_open_dev+0xf0/0xf0 [ 52.397237][ T8476] ? do_raw_spin_lock+0x120/0x2b0 [ 52.402230][ T8476] ? rwlock_bug.part.0+0x90/0x90 [ 52.407140][ T8476] ? _raw_spin_unlock+0x24/0x40 [ 52.411957][ T8476] ? __alloc_fd+0x28d/0x600 [ 52.416426][ T8476] do_sys_openat2+0x16d/0x420 [ 52.421070][ T8476] ? find_held_lock+0x2d/0x110 [ 52.425797][ T8476] ? build_open_flags+0x650/0x650 [ 52.430786][ T8476] ? pick_file+0x129/0x1e0 [ 52.435165][ T8476] ? lock_downgrade+0x6d0/0x6d0 [ 52.439982][ T8476] __x64_sys_openat+0x13f/0x1f0 [ 52.444798][ T8476] ? __ia32_sys_open+0x1c0/0x1c0 [ 52.449705][ T8476] ? syscall_enter_from_user_mode+0x1d/0x50 [ 52.455574][ T8476] do_syscall_64+0x2d/0x70 [ 52.459962][ T8476] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.465827][ T8476] RIP: 0033:0x444969 [ 52.469692][ T8476] Code: 8d d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 5b d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 52.489276][ T8476] RSP: 002b:00007ffc49f30038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 52.497662][ T8476] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000444969 [ 52.505601][ T8476] RDX: 0000000000410481 RSI: 0000000020000000 RDI: ffffffffffffff9c [ 52.513539][ T8476] RBP: 00000000006cf018 R08: 0000000000000000 R09: 0000000000000000 [ 52.521476][ T8476] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402550 [ 52.529415][ T8476] R13: 00000000004025e0 R14: 0000000000000000 R15: 0000000000000000 [ 52.537353][ T8476] Modules linked in: [ 52.541304][ T8476] CR2: fffffbfff6e00022 [ 52.545431][ T8476] ---[ end trace cda9436d066dbe74 ]--- [ 52.551444][ T8476] RIP: 0010:check_memory_region+0xdb/0x180 [ 52.557224][ T8476] Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c [ 52.576941][ T8476] RSP: 0018:ffffc90000eaf6b0 EFLAGS: 00010286 [ 52.582976][ T8476] RAX: fffffbfff6e00022 RBX: fffffbfff6e00024 RCX: ffffffff81dfd4df [ 52.590918][ T8476] RDX: fffffbfff6e00024 RSI: 0000000000000004 RDI: ffffffffb7000116 [ 52.599033][ T8476] RBP: fffffbfff6e00022 R08: 0000000000000000 R09: ffffffffb7000119 [ 52.607147][ T8476] R10: fffffbfff6e00023 R11: 0000000000000000 R12: ffffffffb7000136 [ 52.615522][ T8476] R13: ffffffffb7000116 R14: 0000000000000009 R15: 1ffffffff6e00022 [ 52.623468][ T8476] FS: 000000000120a880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 52.632365][ T8476] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.638913][ T8476] CR2: fffffbfff6e00022 CR3: 0000000012cc6000 CR4: 0000000000350ef0 [ 52.646852][ T8476] Kernel panic - not syncing: Fatal exception [ 52.656347][ T8476] Kernel Offset: disabled [ 52.660734][ T8476] Rebooting in 86400 seconds..