[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.653289] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.361057] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 25.771388] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 26.451715] random: sshd: uninitialized urandom read (32 bytes read, 64 bits of entropy available) [ 93.997386] random: sshd: uninitialized urandom read (32 bytes read, 92 bits of entropy available) Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts. [ 99.653855] random: sshd: uninitialized urandom read (32 bytes read, 98 bits of entropy available) [ 99.774730] IPVS: Creating netns size=2552 id=1 executing program executing program executing program executing program executing program executing program executing program executing program [ 99.832497] IPVS: Creating netns size=2552 id=2 executing program executing program executing program executing program executing program executing program executing program [ 99.896707] IPVS: Creating netns size=2552 id=3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 99.976722] IPVS: Creating netns size=2552 id=4 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 100.092864] IPVS: Creating netns size=2552 id=5 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 100.196219] IPVS: Creating netns size=2552 id=6 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 100.334578] IPVS: Creating netns size=2552 id=7 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 100.452619] IPVS: Creating netns size=2552 id=8 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 101.343081] BUG: unable to handle kernel paging request at ffffeafffd3b8008 [ 101.350435] IP: [] page_remove_rmap+0x2e/0x260 [ 101.356678] PGD 0 [ 101.358927] Oops: 0000 [#1] PREEMPT SMP KASAN [ 101.364069] Dumping ftrace buffer: [ 101.367597] (ftrace buffer empty) [ 101.371300] Modules linked in: [ 101.374700] CPU: 1 PID: 4422 Comm: syz-executor165 Not tainted 4.4.150-g5541782 #19 [ 101.382482] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.391829] task: ffff8800ba5b1800 task.stack: ffff8800ba3a0000 [ 101.397909] RIP: 0010:[] [] page_remove_rmap+0x2e/0x260 [ 101.406610] RSP: 0018:ffff8800ba3a76d8 EFLAGS: 00010246 [ 101.412050] RAX: dffffc0000000000 RBX: ffffeafffd3b8000 RCX: 0000000000000000 [ 101.419311] RDX: 1ffffd5fffa77001 RSI: ffffffff814bceaf RDI: ffffeafffd3b8008 [ 101.426573] RBP: ffff8800ba3a76e8 R08: ffffffff85363fb0 R09: 0000000000000000 [ 101.433836] R10: 0000000000000001 R11: ffff8800ba5b1800 R12: 0000000000000001 [ 101.441216] R13: 1ffff10017474ee1 R14: ffff8800b53c4800 R15: ffffeafffd3b8000 [ 101.448476] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 101.456679] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 101.462538] CR2: ffffeafffd3b8008 CR3: 00000000b6e34000 CR4: 00000000001606f0 [ 101.469789] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.477039] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.484286] Stack: [ 101.486409] ffff8800ba3a7968 0000000000000001 ffff8800ba3a7790 ffffffff8150ad13 [ 101.494516] 00003fff4ee001e0 00003fff4ee001e0 0000000041b58ab3 ffffffff841ef837 [ 101.502515] ffffffff8150ab10 00000000000004f0 ffff8800b46e19f8 ffff8800ba3a7758 [ 101.510598] Call Trace: [ 101.513164] [] zap_huge_pmd+0x203/0x510 [ 101.518778] [] ? __pmd_trans_huge_lock+0x320/0x320 [ 101.525345] [] unmap_single_vma+0xea3/0x1240 [ 101.531434] [] ? vm_normal_page+0x280/0x280 [ 101.537392] [] ? debug_check_no_locks_freed+0x210/0x210 [ 101.544380] [] unmap_vmas+0x81/0xd0 [ 101.549629] [] exit_mmap+0x1c9/0x3a0 [ 101.554975] [] ? SyS_remap_file_pages+0x870/0x870 [ 101.561487] [] ? up_write+0x1a/0x60 [ 101.566745] [] mmput+0xf8/0x2d0 [ 101.571653] [] do_exit+0x8d8/0x26b0 [ 101.576971] [] ? release_task.part.17+0x1200/0x1200 [ 101.583617] [] ? recalc_sigpending+0x76/0xa0 [ 101.589652] [] do_group_exit+0x111/0x330 [ 101.595354] [] get_signal+0x4ec/0x14b0 [ 101.600939] [] do_signal+0x8b/0x1d30 [ 101.606281] [] ? compat_SyS_ioctl+0x1d5/0x2270 [ 101.612481] [] ? do_huge_pmd_anonymous_page+0x38c/0xa10 [ 101.619467] [] ? setup_sigcontext+0x780/0x780 [ 101.625591] [] ? compat_SyS_ppoll+0x420/0x420 [ 101.631790] [] ? handle_mm_fault+0xbe0/0x3180 [ 101.637937] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 101.644059] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 101.651109] [] ? exit_to_usermode_loop+0xe4/0x160 [ 101.657592] [] exit_to_usermode_loop+0x11a/0x160 [ 101.664009] [] do_fast_syscall_32+0x61e/0x8b0 [ 101.670156] [] sysenter_flags_fixed+0xd/0x1a [ 101.676196] Code: e5 41 54 53 48 89 fb e8 31 76 e9 ff 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 de 01 00 00 43 08 01 0f 84 4e 01 00 00 e8 03 76 e9 ff f0 83 43 18 ff 78 [ 101.703572] RIP [] page_remove_rmap+0x2e/0x260 [ 101.709935] RSP [ 101.713554] CR2: ffffeafffd3b8008 [ 101.716999] ---[ end trace 3acd487171c42d32 ]--- [ 101.721729] Kernel panic - not syncing: Fatal exception [ 101.727344] Dumping ftrace buffer: [ 101.730866] (ftrace buffer empty) [ 101.734554] Kernel Offset: disabled [ 101.738158] Rebooting in 86400 seconds..