[ 34.314136] audit: type=1800 audit(1584968551.292:33): pid=7204 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 34.341159] audit: type=1800 audit(1584968551.292:34): pid=7204 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.997384] random: sshd: uninitialized urandom read (32 bytes read) [ 38.279672] audit: type=1400 audit(1584968555.252:35): avc: denied { map } for pid=7377 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 38.333458] random: sshd: uninitialized urandom read (32 bytes read) [ 39.074266] random: sshd: uninitialized urandom read (32 bytes read) [ 41.119237] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.47' (ECDSA) to the list of known hosts. [ 46.648765] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 46.764070] audit: type=1400 audit(1584968563.742:36): avc: denied { map } for pid=7389 comm="syz-executor245" path="/root/syz-executor245420746" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 46.768052] kasan: CONFIG_KASAN_INLINE enabled [ 46.790403] audit: type=1804 audit(1584968563.742:37): pid=7389 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor245" name="/root/bus" dev="sda1" ino=16485 res=1 [ 46.794985] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.825354] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.831605] Modules linked in: [ 46.834777] CPU: 1 PID: 7389 Comm: syz-executor245 Not tainted 4.14.174-syzkaller #0 [ 46.842637] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.851961] task: ffff88808619a400 task.stack: ffff88808f8e8000 [ 46.857992] RIP: 0010:rb_erase+0x29/0x19b0 [ 46.862195] RSP: 0018:ffff88808f8efa68 EFLAGS: 00010292 [ 46.867527] RAX: dffffc0000000000 RBX: ffff8880961603b0 RCX: 1ffff11011f1df26 [ 46.874809] RDX: 0000000000000001 RSI: ffffffff8a659de0 RDI: 0000000000000008 [ 46.882067] RBP: 0000000000000000 R08: ffffffff8a0f5c0c R09: 0000000000001bd2 [ 46.889316] R10: ffff88808f8ef870 R11: ffff88808619a400 R12: ffff8880961563f0 [ 46.896624] R13: 0000000000000000 R14: ffff888096156478 R15: ffffffff8a659de0 [ 46.903872] FS: 0000000001e7f880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 46.912075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.918040] CR2: 0000562eaaa8b1a0 CR3: 000000009ed50000 CR4: 00000000001406e0 [ 46.925295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.932665] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.939930] Call Trace: [ 46.942508] integrity_inode_free+0x119/0x300 [ 46.946976] security_inode_free+0x14/0x80 [ 46.951200] __destroy_inode+0x1e8/0x4c0 [ 46.955228] destroy_inode+0x49/0x110 [ 46.959021] iput+0x457/0x8d0 [ 46.962114] ? ext4_nfs_commit_metadata+0x2d0/0x2d0 [ 46.967111] ext4_ioctl+0x145f/0x39f0 [ 46.970893] ? avc_ss_reset+0x100/0x100 [ 46.974842] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 46.980020] ? do_sys_open+0x1f9/0x3f0 [ 46.983899] ? do_syscall_64+0x1d5/0x640 [ 46.987949] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.993284] ? find_held_lock+0x2d/0x110 [ 46.997353] ? debug_check_no_obj_freed+0x28e/0x6e4 [ 47.002371] ? lock_acquire+0x170/0x3f0 [ 47.006349] ? lock_downgrade+0x6e0/0x6e0 [ 47.010485] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 47.015664] do_vfs_ioctl+0x75a/0xfe0 [ 47.019453] ? selinux_file_mprotect+0x5c0/0x5c0 [ 47.024179] ? ioctl_preallocate+0x1a0/0x1a0 [ 47.028573] ? rcu_read_lock_sched_held+0x10a/0x130 [ 47.033561] ? kmem_cache_free+0x23a/0x2b0 [ 47.037767] ? putname+0xcd/0x110 [ 47.041192] ? security_file_ioctl+0x76/0xb0 [ 47.045573] ? security_file_ioctl+0x83/0xb0 [ 47.049956] SyS_ioctl+0x7f/0xb0 [ 47.053298] ? do_vfs_ioctl+0xfe0/0xfe0 [ 47.057245] do_syscall_64+0x1d5/0x640 [ 47.061107] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 47.066270] RIP: 0033:0x440179 [ 47.069438] RSP: 002b:00007ffd46c2a978 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 47.077128] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440179 [ 47.084393] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 47.091631] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 47.098889] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a00 [ 47.106196] R13: 0000000000401a90 R14: 0000000000000000 R15: 0000000000000000 [ 47.113442] Code: 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 f7 41 56 41 55 49 89 fd 48 83 c7 08 48 89 fa 41 54 48 c1 ea 03 55 53 48 83 ec 18 <80> 3c 02 00 0f 85 f5 10 00 00 49 8d 7d 10 4d 8b 75 08 48 b8 00 [ 47.132640] RIP: rb_erase+0x29/0x19b0 RSP: ffff88808f8efa68 [ 47.138348] ---[ end trace bb9ba6e9b28241b3 ]--- [ 47.143121] Kernel panic - not syncing: Fatal exception [ 47.149403] Kernel Offset: disabled [ 47.153018] Rebooting in 86400 seconds..