[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.661745] random: sshd: uninitialized urandom read (32 bytes read) [ 32.953375] kauditd_printk_skb: 9 callbacks suppressed [ 32.953383] audit: type=1400 audit(1565350847.504:35): avc: denied { map } for pid=6876 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 [ 33.014247] random: sshd: uninitialized urandom read (32 bytes read) [ 33.563763] random: sshd: uninitialized urandom read (32 bytes read) [ 33.746573] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.40' (ECDSA) to the list of known hosts. [ 39.290526] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 39.411564] audit: type=1400 audit(1565350853.964:36): avc: denied { map } for pid=6889 comm="syz-executor033" path="/root/syz-executor033260435" 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 [ 39.415462] kasan: CONFIG_KASAN_INLINE enabled [ 39.443394] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.450966] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.457308] Modules linked in: [ 39.460498] CPU: 1 PID: 6889 Comm: syz-executor033 Not tainted 4.14.137 #33 [ 39.468160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.477884] task: ffff888093b32600 task.stack: ffff888088eb8000 [ 39.484289] RIP: 0010:rb_erase+0x29/0x1c10 [ 39.488502] RSP: 0018:ffff888088ebf9d0 EFLAGS: 00010282 [ 39.493843] RAX: dffffc0000000000 RBX: ffff888089062370 RCX: 1ffff110111d7f12 [ 39.501293] RDX: 0000000000000001 RSI: ffffffff8924d880 RDI: 0000000000000008 [ 39.508543] RBP: ffff888088ebfa18 R08: ffffffff88d17aec R09: 0000000000001b14 [ 39.516148] R10: ffff888088ebf7d0 R11: ffff888093b32600 R12: 0000000000000000 [ 39.523403] R13: ffff8880890643b0 R14: 0000000000000000 R15: ffffffff867a3300 [ 39.530682] FS: 0000000002665880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 39.538899] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.544846] CR2: 00005604bdf251a0 CR3: 000000009f3e3000 CR4: 00000000001406e0 [ 39.552097] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.559361] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.567140] Call Trace: [ 39.576383] integrity_inode_free+0x126/0x320 [ 39.583332] security_inode_free+0x19/0x90 [ 39.588353] __destroy_inode+0x1ef/0x4e0 [ 39.592407] destroy_inode+0x50/0x120 [ 39.597004] evict+0x3e6/0x630 [ 39.600636] iput+0x471/0x900 [ 39.603974] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 39.608973] ext4_ioctl+0x16b0/0x3920 [ 39.612757] ? avc_ss_reset+0x110/0x110 [ 39.616711] ? kasan_slab_free+0x75/0xc0 [ 39.620776] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 39.626060] ? find_held_lock+0x35/0x130 [ 39.630123] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 39.635145] ? __might_sleep+0x93/0xb0 [ 39.641047] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 39.646220] do_vfs_ioctl+0x7ae/0x1060 [ 39.650092] ? selinux_file_mprotect+0x5d0/0x5d0 [ 39.654833] ? ioctl_preallocate+0x1c0/0x1c0 [ 39.659215] ? putname+0xe0/0x120 [ 39.662648] ? do_sys_open+0x221/0x430 [ 39.666518] ? security_file_ioctl+0x7d/0xb0 [ 39.670903] ? security_file_ioctl+0x89/0xb0 [ 39.675343] SyS_ioctl+0x8f/0xc0 [ 39.678798] ? do_vfs_ioctl+0x1060/0x1060 [ 39.682934] do_syscall_64+0x1e8/0x640 [ 39.686827] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.691655] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 39.696824] RIP: 0033:0x440169 [ 39.700005] RSP: 002b:00007fff87422a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 39.707719] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 39.714975] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 39.722335] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 39.729596] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 39.736891] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 39.745016] 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 [ 39.764214] RIP: rb_erase+0x29/0x1c10 RSP: ffff888088ebf9d0 [ 39.770045] ---[ end trace 810adde29ce0b429 ]--- [ 39.774812] Kernel panic - not syncing: Fatal exception [ 39.789413] Kernel Offset: disabled [ 39.793266] Rebooting in 86400 seconds..