[ 35.373443] audit: type=1800 audit(1584262435.250:33): pid=7224 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 [ 35.403969] audit: type=1800 audit(1584262435.250:34): pid=7224 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: [ 37.116722] random: sshd: uninitialized urandom read (32 bytes read) [ 37.358625] audit: type=1400 audit(1584262437.230:35): avc: denied { map } for pid=7398 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 [ 37.410713] random: sshd: uninitialized urandom read (32 bytes read) [ 38.198846] random: sshd: uninitialized urandom read (32 bytes read) [ 38.405139] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.178' (ECDSA) to the list of known hosts. [ 43.974931] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 44.097190] audit: type=1400 audit(1584262443.970:36): avc: denied { map } for pid=7410 comm="syz-executor019" path="/root/syz-executor019564181" 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 [ 44.102782] kasan: CONFIG_KASAN_INLINE enabled [ 44.125580] audit: type=1804 audit(1584262443.970:37): pid=7410 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-executor019" name="/root/bus" dev="sda1" ino=16485 res=1 [ 44.129475] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 44.160224] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 44.166468] Modules linked in: [ 44.169676] CPU: 0 PID: 7410 Comm: syz-executor019 Not tainted 4.14.173-syzkaller #0 [ 44.177632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.187070] task: ffff8880871dc080 task.stack: ffff8880a4188000 [ 44.193210] RIP: 0010:rb_erase+0x29/0x19b0 [ 44.197430] RSP: 0018:ffff8880a418fa68 EFLAGS: 00010292 [ 44.202792] RAX: dffffc0000000000 RBX: ffff8880850b4230 RCX: 1ffff11014831f26 [ 44.210052] RDX: 0000000000000001 RSI: ffffffff8a659de0 RDI: 0000000000000008 [ 44.217414] RBP: 0000000000000000 R08: ffffffff8a0f5c0c R09: 0000000000001c5a [ 44.224665] R10: ffff8880a418f870 R11: ffff8880871dc080 R12: ffff8880851933b0 [ 44.231919] R13: 0000000000000000 R14: ffff888085193438 R15: ffffffff8a659de0 [ 44.239185] FS: 0000000001182880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 44.247399] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.253264] CR2: 0000563991184180 CR3: 000000009322c000 CR4: 00000000001406f0 [ 44.260520] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.267880] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.275145] Call Trace: [ 44.277731] integrity_inode_free+0x119/0x300 [ 44.282335] security_inode_free+0x14/0x80 [ 44.286640] __destroy_inode+0x1e8/0x4c0 [ 44.290715] destroy_inode+0x49/0x110 [ 44.294527] iput+0x457/0x8d0 [ 44.297614] ? ext4_nfs_commit_metadata+0x2d0/0x2d0 [ 44.302622] ext4_ioctl+0x145f/0x39f0 [ 44.306688] ? avc_ss_reset+0x100/0x100 [ 44.310650] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 44.315840] ? do_sys_open+0x1f9/0x3f0 [ 44.319717] ? do_syscall_64+0x1d5/0x640 [ 44.323774] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 44.329124] ? find_held_lock+0x2d/0x110 [ 44.333284] ? debug_check_no_obj_freed+0x28e/0x6e4 [ 44.338284] ? lock_acquire+0x170/0x3f0 [ 44.342240] ? lock_downgrade+0x6e0/0x6e0 [ 44.346385] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 44.351567] do_vfs_ioctl+0x75a/0xfe0 [ 44.355352] ? selinux_file_mprotect+0x5c0/0x5c0 [ 44.360240] ? ioctl_preallocate+0x1a0/0x1a0 [ 44.364653] ? rcu_read_lock_sched_held+0x10a/0x130 [ 44.369740] ? kmem_cache_free+0x23a/0x2b0 [ 44.373961] ? putname+0xcd/0x110 [ 44.377497] ? security_file_ioctl+0x76/0xb0 [ 44.381977] ? security_file_ioctl+0x83/0xb0 [ 44.386419] SyS_ioctl+0x7f/0xb0 [ 44.389962] ? do_vfs_ioctl+0xfe0/0xfe0 [ 44.393941] do_syscall_64+0x1d5/0x640 [ 44.397816] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 44.403006] RIP: 0033:0x440169 [ 44.406177] RSP: 002b:00007fff7f9923a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 44.413877] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 44.421130] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 44.428393] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 44.435661] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 44.443180] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 44.450436] 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 [ 44.470215] RIP: rb_erase+0x29/0x19b0 RSP: ffff8880a418fa68 [ 44.475952] ---[ end trace 8661786797af8ae2 ]--- [ 44.480722] Kernel panic - not syncing: Fatal exception [ 44.487576] Kernel Offset: disabled [ 44.491223] Rebooting in 86400 seconds..