[ 31.951801] audit: type=1800 audit(1555379120.788:33): pid=6841 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 [ 31.979954] audit: type=1800 audit(1555379120.788:34): pid=6841 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: [ 64.126382] random: sshd: uninitialized urandom read (32 bytes read) [ 64.329901] audit: type=1400 audit(1555379153.158:35): avc: denied { map } for pid=7016 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 [ 64.369416] random: sshd: uninitialized urandom read (32 bytes read) [ 64.944093] random: sshd: uninitialized urandom read (32 bytes read) [ 65.132988] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. [ 70.676657] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 70.794370] audit: type=1400 audit(1555379159.628:36): avc: denied { map } for pid=7028 comm="syz-executor728" path="/root/syz-executor728442795" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 70.798495] kasan: CONFIG_KASAN_INLINE enabled [ 70.825599] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 70.833013] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 70.839403] Modules linked in: [ 70.842583] CPU: 0 PID: 7028 Comm: syz-executor728 Not tainted 4.14.111 #1 [ 70.849569] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.858905] task: ffff88808355a200 task.stack: ffff8880a5980000 [ 70.865009] RIP: 0010:rb_erase+0x29/0x1c10 [ 70.869232] RSP: 0018:ffff8880a59879d0 EFLAGS: 00010282 [ 70.874613] RAX: dffffc0000000000 RBX: ffff8880946317f0 RCX: 1ffff11014b30f12 [ 70.881874] RDX: 0000000000000001 RSI: ffffffff89246880 RDI: 0000000000000008 [ 70.889135] RBP: ffff8880a5987a18 R08: ffffffff88d107cc R09: 0000000000001b6c [ 70.896386] R10: ffff8880a59877d0 R11: ffff88808355a200 R12: 0000000000000000 [ 70.903640] R13: ffff8880945fd3f0 R14: 0000000000000000 R15: ffffffff867a2220 [ 70.910895] FS: 0000000000c5c880(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 [ 70.919103] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.924968] CR2: 0000000020000004 CR3: 0000000094ae1000 CR4: 00000000001406f0 [ 70.932224] Call Trace: [ 70.934798] integrity_inode_free+0x126/0x320 [ 70.939277] security_inode_free+0x19/0x90 [ 70.943493] __destroy_inode+0x1ef/0x4e0 [ 70.947538] destroy_inode+0x50/0x130 [ 70.951322] evict+0x3e9/0x630 [ 70.954499] iput+0x476/0x900 [ 70.957592] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 70.962634] ext4_ioctl+0x15f1/0x38b0 [ 70.966426] ? avc_ss_reset+0x110/0x110 [ 70.970384] ? kasan_slab_free+0x75/0xc0 [ 70.974427] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 70.979029] ? find_held_lock+0x35/0x130 [ 70.983079] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 70.988096] ? __might_sleep+0x93/0xb0 [ 70.992036] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 70.996668] do_vfs_ioctl+0x7b9/0x1070 [ 71.000546] ? selinux_file_mprotect+0x5d0/0x5d0 [ 71.005286] ? ioctl_preallocate+0x1c0/0x1c0 [ 71.009672] ? putname+0xe0/0x120 [ 71.013107] ? do_sys_open+0x221/0x430 [ 71.016982] ? security_file_ioctl+0x83/0xc0 [ 71.021478] ? security_file_ioctl+0x8f/0xc0 [ 71.025936] SyS_ioctl+0x8f/0xc0 [ 71.029395] ? do_vfs_ioctl+0x1070/0x1070 [ 71.033528] do_syscall_64+0x1eb/0x630 [ 71.037399] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 71.042234] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 71.047414] RIP: 0033:0x440169 [ 71.050588] RSP: 002b:00007ffc64b20068 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 71.058278] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 71.065570] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 71.072839] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 71.080108] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 71.087370] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 71.094625] Code: 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 57 41 56 49 89 fe 48 83 c7 08 48 89 fa 41 55 48 c1 ea 03 41 54 53 48 83 ec 20 <80> 3c 02 00 0f 85 0c 11 00 00 49 8d 7e 10 4d 8b 7e 08 48 b8 00 [ 71.113749] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a59879d0 [ 71.119527] ---[ end trace bf7861ffc4fe2b53 ]--- [ 71.124343] Kernel panic - not syncing: Fatal exception [ 71.130530] Kernel Offset: disabled [ 71.134146] Rebooting in 86400 seconds..