[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.405296] random: sshd: uninitialized urandom read (32 bytes read) [ 34.677096] kauditd_printk_skb: 9 callbacks suppressed [ 34.677104] audit: type=1400 audit(1569876199.607:35): avc: denied { map } for pid=6877 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 [ 34.718493] random: sshd: uninitialized urandom read (32 bytes read) [ 35.249659] random: sshd: uninitialized urandom read (32 bytes read) [ 35.422081] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.220' (ECDSA) to the list of known hosts. [ 40.971709] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 41.090213] audit: type=1400 audit(1569876206.017:36): avc: denied { map } for pid=6890 comm="syz-executor863" path="/root/syz-executor863624321" 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 [ 41.093154] kasan: CONFIG_KASAN_INLINE enabled [ 41.121241] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.128601] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.134988] Modules linked in: [ 41.138173] CPU: 1 PID: 6890 Comm: syz-executor863 Not tainted 4.14.146 #0 [ 41.145161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.154494] task: ffff888080532300 task.stack: ffff8880a58b0000 [ 41.160544] RIP: 0010:rb_erase+0x29/0x1c10 [ 41.164752] RSP: 0018:ffff8880a58b79d0 EFLAGS: 00010282 [ 41.170092] RAX: dffffc0000000000 RBX: ffff88809a1b1370 RCX: 1ffff11014b16f12 [ 41.177337] RDX: 0000000000000001 RSI: ffffffff8924d940 RDI: 0000000000000008 [ 41.184581] RBP: ffff8880a58b7a18 R08: ffffffff88d17b2c R09: 0000000000001b26 [ 41.191828] R10: ffff8880a58b77d0 R11: ffff888080532300 R12: 0000000000000000 [ 41.199094] R13: ffff88809a1123b0 R14: 0000000000000000 R15: ffffffff867a3540 [ 41.206341] FS: 00005555556f9880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 41.214629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.220484] CR2: 0000000020000104 CR3: 00000000a7c98000 CR4: 00000000001406e0 [ 41.227732] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.234981] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.242233] Call Trace: [ 41.244918] integrity_inode_free+0x126/0x320 [ 41.249411] security_inode_free+0x19/0x90 [ 41.253629] __destroy_inode+0x1ef/0x4e0 [ 41.257668] destroy_inode+0x50/0x120 [ 41.261453] evict+0x3e6/0x630 [ 41.264622] iput+0x471/0x900 [ 41.267799] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 41.272801] ext4_ioctl+0x16b0/0x3920 [ 41.276575] ? avc_ss_reset+0x110/0x110 [ 41.280523] ? kasan_slab_free+0x75/0xc0 [ 41.284562] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 41.289736] ? find_held_lock+0x35/0x130 [ 41.293772] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 41.298778] ? __might_sleep+0x93/0xb0 [ 41.302642] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 41.307816] do_vfs_ioctl+0x7ae/0x1060 [ 41.311679] ? selinux_file_mprotect+0x5d0/0x5d0 [ 41.316419] ? ioctl_preallocate+0x1c0/0x1c0 [ 41.320811] ? putname+0xe0/0x120 [ 41.324240] ? do_sys_open+0x221/0x430 [ 41.328103] ? security_file_ioctl+0x7d/0xb0 [ 41.332484] ? security_file_ioctl+0x89/0xb0 [ 41.336887] SyS_ioctl+0x8f/0xc0 [ 41.340243] ? do_vfs_ioctl+0x1060/0x1060 [ 41.344380] do_syscall_64+0x1e8/0x640 [ 41.348252] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.353115] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.358291] RIP: 0033:0x440169 [ 41.361456] RSP: 002b:00007ffdacf8a3d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 41.369178] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 41.376424] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 41.383688] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 41.390935] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 41.398188] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 41.405437] 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 [ 41.424518] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a58b79d0 [ 41.430311] ---[ end trace aec051c0ad50f26b ]--- [ 41.435058] Kernel panic - not syncing: Fatal exception [ 41.441833] Kernel Offset: disabled [ 41.445454] Rebooting in 86400 seconds..