[ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.259483] audit: type=1800 audit(1620510461.869:2): pid=7969 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor488" name="bus" dev="sda1" ino=13861 res=0 [ 29.259899] kasan: CONFIG_KASAN_INLINE enabled [ 29.282857] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.290366] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.296756] Modules linked in: [ 29.299933] CPU: 0 PID: 7969 Comm: syz-executor488 Not tainted 4.14.232-syzkaller #0 [ 29.308237] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.317582] task: ffff8880962e21c0 task.stack: ffff888091670000 [ 29.323627] RIP: 0010:rb_erase+0x29/0x1290 [ 29.327856] RSP: 0018:ffff888091677a68 EFLAGS: 00010292 [ 29.333209] RAX: dffffc0000000000 RBX: ffff88808da86530 RCX: 1ffff110122cef27 [ 29.340476] RDX: 0000000000000001 RSI: ffffffff8bf99ea0 RDI: 0000000000000008 [ 29.347753] RBP: 0000000000000000 R08: ffffffff8ba2d02c R09: 0000000000001bfa [ 29.355019] R10: 0000000000000001 R11: ffff8880962e21c0 R12: 0000000000000000 [ 29.363599] R13: dffffc0000000000 R14: ffff88808daae7f8 R15: ffffffff8bf99ea0 [ 29.370851] FS: 0000000001663300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.379071] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.384938] CR2: 00000000200001c0 CR3: 00000000aaef6000 CR4: 00000000001406f0 [ 29.392197] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.399522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.406905] Call Trace: [ 29.409580] integrity_inode_free+0x119/0x300 [ 29.414286] security_inode_free+0x14/0x80 [ 29.418530] __destroy_inode+0x1e8/0x4d0 [ 29.422609] destroy_inode+0x49/0x110 [ 29.426395] iput+0x458/0x7e0 [ 29.429487] ? ext4_mark_dquot_dirty+0x190/0x190 [ 29.434253] ext4_ioctl+0x16c5/0x3870 [ 29.438042] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 29.443221] ? putname+0xcd/0x110 [ 29.446659] ? do_sys_open+0x203/0x410 [ 29.450548] ? do_syscall_64+0x1d5/0x640 [ 29.454598] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.460121] ? path_lookupat+0x780/0x780 [ 29.464251] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.469312] ? lock_acquire+0x170/0x3f0 [ 29.473388] ? lock_downgrade+0x740/0x740 [ 29.477538] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 29.482634] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.487725] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 29.492894] do_vfs_ioctl+0x75a/0xff0 [ 29.496676] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 29.502134] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.506520] ? kmem_cache_free+0x23a/0x2b0 [ 29.510736] ? putname+0xcd/0x110 [ 29.514175] ? do_sys_open+0x208/0x410 [ 29.518052] ? filp_open+0x60/0x60 [ 29.521574] ? security_file_ioctl+0x83/0xb0 [ 29.525961] SyS_ioctl+0x7f/0xb0 [ 29.529307] ? do_vfs_ioctl+0xff0/0xff0 [ 29.533535] do_syscall_64+0x1d5/0x640 [ 29.537413] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.542583] RIP: 0033:0x43ee39 [ 29.545746] RSP: 002b:00007ffce25991a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.553441] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee39 [ 29.560703] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 29.567952] RBP: 0000000000402e20 R08: 0000000000000000 R09: 0000000000400488 [ 29.575204] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402eb0 [ 29.582464] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 29.589715] Code: ff ff 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 f7 41 56 41 55 41 54 49 89 fc 48 83 c7 08 48 89 fa 55 48 c1 ea 03 53 48 83 ec 18 <80> 3c 02 00 0f 85 f2 0c 00 00 49 8d 7c 24 10 4d 8b 74 24 08 48 [ 29.608810] RIP: rb_erase+0x29/0x1290 RSP: ffff888091677a68 [ 29.614573] ---[ end trace bb8eb55acdd758d0 ]--- [ 29.619351] Kernel panic - not syncing: Fatal exception [ 29.625359] Kernel Offset: disabled [ 29.628973] Rebooting in 86400 seconds..