5l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 34.711176] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.954230] audit: type=1400 audit(1584250320.406:35): avc: denied { map } for pid=7341 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 [ 35.006472] random: sshd: uninitialized urandom read (32 bytes read) [ 35.787511] random: sshd: uninitialized urandom read (32 bytes read) [ 35.974492] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.177' (ECDSA) to the list of known hosts. [ 41.524148] random: sshd: uninitialized urandom read (32 bytes read) [ 41.644088] audit: type=1400 audit(1584250327.096:36): avc: denied { map } for pid=7354 comm="syz-executor322" path="/root/syz-executor322473363" 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 [ 41.647478] kasan: CONFIG_KASAN_INLINE enabled executing program [ 41.671035] audit: type=1804 audit(1584250327.096:37): pid=7354 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor322" name="/root/bus" dev="sda1" ino=16485 res=1 [ 41.675323] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.705794] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.712004] Modules linked in: [ 41.715180] CPU: 0 PID: 7354 Comm: syz-executor322 Not tainted 4.14.173-syzkaller #0 [ 41.723037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.732399] task: ffff88808500e4c0 task.stack: ffff888099bf8000 [ 41.738456] RIP: 0010:rb_erase+0x29/0x19b0 [ 41.742669] RSP: 0018:ffff888099bffa68 EFLAGS: 00010292 [ 41.748012] RAX: dffffc0000000000 RBX: ffff8880943973b0 RCX: 1ffff1101337ff26 [ 41.755264] RDX: 0000000000000001 RSI: ffffffff8a659de0 RDI: 0000000000000008 [ 41.762557] RBP: 0000000000000000 R08: ffffffff8a0f5abc R09: 0000000000001c14 [ 41.769805] R10: ffff888099bff870 R11: ffff88808500e4c0 R12: ffff8880943963f0 [ 41.777061] R13: 0000000000000000 R14: ffff888094396478 R15: ffffffff8a659de0 [ 41.784368] FS: 0000000000f88880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 41.792583] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.798449] CR2: 0000000020000004 CR3: 0000000097d6f000 CR4: 00000000001406f0 [ 41.805705] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.812975] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.820222] Call Trace: [ 41.822793] integrity_inode_free+0x119/0x300 [ 41.827268] security_inode_free+0x14/0x80 [ 41.831483] __destroy_inode+0x1e8/0x4c0 [ 41.835538] destroy_inode+0x49/0x110 [ 41.839329] iput+0x457/0x8d0 [ 41.842426] ? ext4_nfs_commit_metadata+0x2d0/0x2d0 [ 41.847446] ext4_ioctl+0x145f/0x39f0 [ 41.851230] ? avc_ss_reset+0x100/0x100 [ 41.855251] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 41.860442] ? do_sys_open+0x1f9/0x3f0 [ 41.864313] ? do_syscall_64+0x1d5/0x640 [ 41.868355] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.873705] ? find_held_lock+0x2d/0x110 [ 41.877747] ? debug_check_no_obj_freed+0x28e/0x6e4 [ 41.882755] ? lock_acquire+0x170/0x3f0 [ 41.886719] ? lock_downgrade+0x6e0/0x6e0 [ 41.890854] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 41.896046] do_vfs_ioctl+0x75a/0xfe0 [ 41.899831] ? selinux_file_mprotect+0x5c0/0x5c0 [ 41.904572] ? ioctl_preallocate+0x1a0/0x1a0 [ 41.908997] ? rcu_read_lock_sched_held+0x10a/0x130 [ 41.914004] ? kmem_cache_free+0x23a/0x2b0 [ 41.918231] ? putname+0xcd/0x110 [ 41.921714] ? security_file_ioctl+0x76/0xb0 [ 41.926100] ? security_file_ioctl+0x83/0xb0 [ 41.930487] SyS_ioctl+0x7f/0xb0 [ 41.933897] ? do_vfs_ioctl+0xfe0/0xfe0 [ 41.937850] do_syscall_64+0x1d5/0x640 [ 41.941719] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 41.946888] RIP: 0033:0x440169 [ 41.950060] RSP: 002b:00007fff851f6518 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 41.957814] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 41.965077] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 41.972332] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 41.979723] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 41.987019] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 41.994278] Code: 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 f7 41 56 41 55 49 89 fd 48 83 c7 08 48 89 fa 41 54 48 c1 ea 03 55 53 48 83 ec 18 <80> 3c 02 00 0f 85 f5 10 00 00 49 8d 7d 10 4d 8b 75 08 48 b8 00 [ 42.013353] RIP: rb_erase+0x29/0x19b0 RSP: ffff888099bffa68 [ 42.019091] ---[ end trace 9bd6f0c3e5f0c662 ]--- [ 42.023851] Kernel panic - not syncing: Fatal exception [ 42.030440] Kernel Offset: disabled [ 42.034063] Rebooting in 86400 seconds..