[ 32.709227] audit: type=1800 audit(1572631964.716:33): pid=6822 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 [ 32.736205] audit: type=1800 audit(1572631964.726:34): pid=6822 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 [ 33.726065] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.981665] audit: type=1400 audit(1572631965.996:35): avc: denied { map } for pid=6993 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 [ 34.032639] random: sshd: uninitialized urandom read (32 bytes read) [ 34.563714] random: sshd: uninitialized urandom read (32 bytes read) [ 34.745856] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.137' (ECDSA) to the list of known hosts. [ 40.266899] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 40.379929] audit: type=1400 audit(1572631972.386:36): avc: denied { map } for pid=7006 comm="syz-executor047" path="/root/syz-executor047080588" 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 [ 40.383164] kasan: CONFIG_KASAN_INLINE enabled [ 40.411129] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.418496] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.424707] Modules linked in: [ 40.427905] CPU: 1 PID: 7006 Comm: syz-executor047 Not tainted 4.14.151 #0 [ 40.434956] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.444462] task: ffff8880968d6000 task.stack: ffff88809fb58000 [ 40.450509] RIP: 0010:rb_erase+0x29/0x1c10 [ 40.454721] RSP: 0018:ffff88809fb5f9d0 EFLAGS: 00010282 [ 40.460066] RAX: dffffc0000000000 RBX: ffff88809a03c930 RCX: 1ffff11013f6bf12 [ 40.467566] RDX: 0000000000000001 RSI: ffffffff8924f900 RDI: 0000000000000008 [ 40.474830] RBP: ffff88809fb5fa18 R08: ffffffff88d19b6c R09: 0000000000001b36 [ 40.482080] R10: ffff88809fb5f7d0 R11: ffff8880968d6000 R12: 0000000000000000 [ 40.489340] R13: ffff8880959093b0 R14: 0000000000000000 R15: ffffffff867a3740 [ 40.496590] FS: 000000000229a880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 40.504796] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.510654] CR2: 0000000020000080 CR3: 00000000899b3000 CR4: 00000000001406e0 [ 40.517903] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.525150] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.532399] Call Trace: [ 40.534977] integrity_inode_free+0x126/0x320 [ 40.539467] security_inode_free+0x19/0x90 [ 40.543681] __destroy_inode+0x1ef/0x4e0 [ 40.547715] destroy_inode+0x50/0x120 [ 40.551492] evict+0x3e6/0x630 [ 40.554670] iput+0x471/0x900 [ 40.557750] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 40.562740] ext4_ioctl+0x16b0/0x3920 [ 40.566531] ? avc_ss_reset+0x110/0x110 [ 40.570481] ? kmem_cache_free+0x83/0x2b0 [ 40.574607] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 40.579774] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 40.584783] ? __might_sleep+0x93/0xb0 [ 40.588659] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 40.593824] do_vfs_ioctl+0x7ae/0x1060 [ 40.597690] ? selinux_file_mprotect+0x5d0/0x5d0 [ 40.602464] ? kmem_cache_free+0x244/0x2b0 [ 40.606678] ? ioctl_preallocate+0x1c0/0x1c0 [ 40.611059] ? putname+0xe0/0x120 [ 40.614492] ? do_sys_open+0x221/0x430 [ 40.618357] ? security_file_ioctl+0x7d/0xb0 [ 40.622739] ? security_file_ioctl+0x89/0xb0 [ 40.627124] SyS_ioctl+0x8f/0xc0 [ 40.630467] ? do_vfs_ioctl+0x1060/0x1060 [ 40.634617] do_syscall_64+0x1e8/0x640 [ 40.638486] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.643370] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.648546] RIP: 0033:0x440149 [ 40.651714] RSP: 002b:00007ffdce0729e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 40.659434] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149 [ 40.666681] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 40.673932] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.681178] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0 [ 40.688426] R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000 [ 40.695689] 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 [ 40.714764] RIP: rb_erase+0x29/0x1c10 RSP: ffff88809fb5f9d0 [ 40.720539] ---[ end trace 545d3c921c62fd40 ]--- [ 40.725293] Kernel panic - not syncing: Fatal exception [ 40.731945] Kernel Offset: disabled [ 40.735569] Rebooting in 86400 seconds..