[ 34.990115] audit: type=1800 audit(1565964355.898:33): pid=6956 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 [ 35.017244] audit: type=1800 audit(1565964355.908:34): pid=6956 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: [ 39.454905] random: sshd: uninitialized urandom read (32 bytes read) [ 39.856352] audit: type=1400 audit(1565964360.768:35): avc: denied { map } for pid=7128 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 [ 39.923849] random: sshd: uninitialized urandom read (32 bytes read) [ 40.530219] random: sshd: uninitialized urandom read (32 bytes read) [ 40.727134] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.40' (ECDSA) to the list of known hosts. [ 46.548505] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 46.665631] audit: type=1400 audit(1565964367.578:36): avc: denied { map } for pid=7140 comm="syz-executor119" path="/root/syz-executor119413122" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 46.669403] kasan: CONFIG_KASAN_INLINE enabled [ 46.697317] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.705117] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.712009] Modules linked in: [ 46.715217] CPU: 1 PID: 7140 Comm: syz-executor119 Not tainted 4.14.139 #35 [ 46.722301] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.731702] task: ffff888073624480 task.stack: ffff888095f00000 [ 46.737782] RIP: 0010:rb_erase+0x29/0x1c10 [ 46.742175] RSP: 0018:ffff888095f079d0 EFLAGS: 00010282 [ 46.747918] RAX: dffffc0000000000 RBX: ffff8880943963b0 RCX: 1ffff11012be0f12 [ 46.755467] RDX: 0000000000000001 RSI: ffffffff8924d880 RDI: 0000000000000008 [ 46.763436] RBP: ffff888095f07a18 R08: ffffffff88d17c3c R09: 0000000000001bd0 [ 46.770696] R10: ffff888095f077d0 R11: ffff888073624480 R12: 0000000000000000 [ 46.778474] R13: ffff8880943933f0 R14: 0000000000000000 R15: ffffffff867a3300 [ 46.785967] FS: 00000000014a8880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 46.794371] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.800929] CR2: 00005599b31e5190 CR3: 00000000968f1000 CR4: 00000000001406e0 [ 46.808383] Call Trace: [ 46.810966] integrity_inode_free+0x126/0x320 [ 46.815885] security_inode_free+0x19/0x90 [ 46.820209] __destroy_inode+0x1ef/0x4e0 [ 46.824344] destroy_inode+0x50/0x120 [ 46.828270] evict+0x3e6/0x630 [ 46.831644] iput+0x471/0x900 [ 46.834742] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 46.839970] ext4_ioctl+0x16b0/0x3920 [ 46.843906] ? avc_ss_reset+0x110/0x110 [ 46.848070] ? kasan_slab_free+0x75/0xc0 [ 46.852742] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 46.858165] ? find_held_lock+0x35/0x130 [ 46.862225] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 46.867449] ? __might_sleep+0x93/0xb0 [ 46.871334] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 46.876864] do_vfs_ioctl+0x7ae/0x1060 [ 46.880875] ? selinux_file_mprotect+0x5d0/0x5d0 [ 46.885658] ? ioctl_preallocate+0x1c0/0x1c0 [ 46.890061] ? putname+0xe0/0x120 [ 46.893557] ? do_sys_open+0x221/0x430 [ 46.898259] ? security_file_ioctl+0x7d/0xb0 [ 46.902664] ? security_file_ioctl+0x89/0xb0 [ 46.907061] SyS_ioctl+0x8f/0xc0 [ 46.910417] ? do_vfs_ioctl+0x1060/0x1060 [ 46.914682] do_syscall_64+0x1e8/0x640 [ 46.918957] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.923923] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.929149] RIP: 0033:0x440169 [ 46.932417] RSP: 002b:00007ffe732abac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.940119] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 46.947508] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 46.954768] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 46.962092] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 46.969526] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 46.976845] 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 [ 46.996165] RIP: rb_erase+0x29/0x1c10 RSP: ffff888095f079d0 [ 47.001945] ---[ end trace ce82fddadbe8d682 ]--- [ 47.007124] Kernel panic - not syncing: Fatal exception [ 47.015275] Kernel Offset: disabled [ 47.019038] Rebooting in 86400 seconds..