Warning: Permanently added '10.128.0.65' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.657408] audit: type=1400 audit(1591513922.748:8): avc: denied { execmem } for pid=6334 comm="syz-executor585" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 31.659715] kasan: CONFIG_KASAN_INLINE enabled [ 31.678445] audit: type=1804 audit(1591513922.748:9): pid=6334 uid=0 auid=0 ses=5 subj=system_u:system_r:kernel_t:s0 op="invalid_pcr" cause="open_writers" comm="syz-executor585" name="/root/bus" dev="sda1" ino=15706 res=1 [ 31.682330] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.709712] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 31.715947] Modules linked in: [ 31.719130] CPU: 1 PID: 6334 Comm: syz-executor585 Not tainted 4.14.183-syzkaller #0 [ 31.726985] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.736315] task: ffff8880a11e8340 task.stack: ffff888081e20000 [ 31.742365] RIP: 0010:rb_erase+0x29/0x1890 [ 31.746570] RSP: 0018:ffff888081e27a60 EFLAGS: 00010286 [ 31.751908] RAX: dffffc0000000000 RBX: ffff8880839a26f0 RCX: 0000000000000001 [ 31.759164] RDX: 0000000000000001 RSI: ffffffff8a452f60 RDI: 0000000000000008 [ 31.766407] RBP: 0000000000000000 R08: ffffffff89eeee1c R09: 0000000000001e30 [ 31.773650] R10: ffff888081e27870 R11: ffff8880a11e8340 R12: 0000000000000000 [ 31.780893] R13: dffffc0000000000 R14: ffff88808396a4b8 R15: ffffffff8a452f60 [ 31.788153] FS: 0000000000cff880(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 [ 31.796367] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.802236] CR2: 0000000020000204 CR3: 00000000947a7000 CR4: 00000000001406e0 [ 31.809483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.816834] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.824077] Call Trace: [ 31.826644] integrity_inode_free+0x119/0x300 [ 31.831133] security_inode_free+0x14/0x80 [ 31.835346] __destroy_inode+0x1e8/0x4d0 [ 31.839395] destroy_inode+0x49/0x110 [ 31.843187] iput+0x457/0x8d0 [ 31.846302] ? ext4_mark_dquot_dirty+0x190/0x190 [ 31.851127] ext4_ioctl+0x123c/0x39f0 [ 31.854907] ? avc_ss_reset+0x100/0x100 [ 31.858859] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 31.864038] ? putname+0xcd/0x110 [ 31.867465] ? do_sys_open+0x233/0x3e0 [ 31.871339] ? do_syscall_64+0x1d5/0x640 [ 31.875389] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.880734] ? path_mountpoint+0x960/0x960 [ 31.884941] ? trace_hardirqs_on+0x10/0x10 [ 31.889156] ? debug_check_no_obj_freed+0x27c/0x5fd [ 31.894144] ? lock_acquire+0x170/0x3f0 [ 31.898090] ? lock_downgrade+0x6e0/0x6e0 [ 31.902236] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 31.907401] do_vfs_ioctl+0x75a/0xfe0 [ 31.911197] ? selinux_parse_skb.constprop.0+0x16c0/0x16c0 [ 31.916794] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.921173] ? rcu_read_lock_sched_held+0x10a/0x130 [ 31.926174] ? kmem_cache_free+0x23a/0x2b0 [ 31.930390] ? putname+0xcd/0x110 [ 31.933842] ? security_file_ioctl+0x76/0xb0 [ 31.938224] ? security_file_ioctl+0x83/0xb0 [ 31.942604] SyS_ioctl+0x7f/0xb0 [ 31.945944] ? do_vfs_ioctl+0xfe0/0xfe0 [ 31.949912] do_syscall_64+0x1d5/0x640 [ 31.953774] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 31.958936] RIP: 0033:0x4401c9 [ 31.962113] RSP: 002b:00007ffd74cca6f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 31.969799] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401c9 [ 31.977112] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 31.984378] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.991799] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a50 [ 31.999044] R13: 0000000000401ae0 R14: 0000000000000000 R15: 0000000000000000 [ 32.006380] Code: 00 00 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 20 <80> 3c 02 00 0f 85 f2 0e 00 00 49 8d 7c 24 10 4d 8b 74 24 08 48 [ 32.025463] RIP: rb_erase+0x29/0x1890 RSP: ffff888081e27a60 [ 32.031196] ---[ end trace b1f0a9ac29170194 ]--- [ 32.035958] Kernel panic - not syncing: Fatal exception [ 32.042765] Kernel Offset: disabled [ 32.046391] Rebooting in 86400 seconds..