[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.274211] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.120497] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 26.489274] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 27.101346] random: sshd: uninitialized urandom read (32 bytes read, 62 bits of entropy available) [ 27.272501] random: sshd: uninitialized urandom read (32 bytes read, 65 bits of entropy available) Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. [ 33.036718] random: sshd: uninitialized urandom read (32 bytes read, 71 bits of entropy available) [ 33.162212] IPVS: Creating netns size=2552 id=1 [ 33.197114] IPVS: Creating netns size=2552 id=2 executing program executing program executing program [ 33.253294] 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 executing program executing program executing program [ 33.349489] 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 [ 33.455164] 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 executing program executing program executing program executing program [ 33.592728] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.807256] 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 executing program executing program [ 33.963695] 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 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 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 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 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 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 [ 38.637452] capability: warning: `syz-executor312' uses 32-bit capabilities (legacy support in use) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 38.704784] BUG: unable to handle kernel paging request at ffffeafffd378008 [ 38.712164] IP: [] page_remove_rmap+0x2e/0x260 [ 38.718437] PGD 0 [ 38.720713] Oops: 0000 [#1] PREEMPT SMP KASAN [ 38.725736] Dumping ftrace buffer: [ 38.729266] (ftrace buffer empty) [ 38.732960] Modules linked in: [ 38.736265] CPU: 1 PID: 5603 Comm: syz-executor312 Not tainted 4.4.150-g5541782 #19 [ 38.744044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program executing program [ 38.753389] task: ffff8800b9951800 task.stack: ffff8801d4f38000 [ 38.759446] RIP: 0010:[] [] page_remove_rmap+0x2e/0x260 [ 38.768154] RSP: 0018:ffff8801d4f3f6d8 EFLAGS: 00010246 [ 38.773593] RAX: dffffc0000000000 RBX: ffffeafffd378000 RCX: 0000000000000000 [ 38.780854] RDX: 1ffffd5fffa6f001 RSI: ffffffff814bceaf RDI: ffffeafffd378008 [ 38.788116] RBP: ffff8801d4f3f6e8 R08: ffffffff85363fb0 R09: 0000000000000000 [ 38.795375] R10: 0000000000000001 R11: ffff8800b9951800 R12: 0000000000000001 executing program executing program executing program executing program executing program executing program [ 38.802649] R13: 1ffff1003a9e7ee1 R14: ffff8800b8dbf800 R15: ffffeafffd378000 [ 38.809921] FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 38.818143] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 38.824019] CR2: ffffeafffd378008 CR3: 00000000b48e4000 CR4: 00000000001606f0 [ 38.831288] Stack: [ 38.833437] ffff8801d4f3f968 0000000000000001 ffff8801d4f3f790 ffffffff8150ad13 [ 38.841498] 00003fff4de001e0 00003fff4de001e0 0000000041b58ab3 ffffffff841ef837 executing program executing program executing program executing program executing program executing program [ 38.849557] ffffffff8150ab10 00000000000004f0 ffff8801d833de70 ffff8801d4f3f758 [ 38.857612] Call Trace: [ 38.860198] [] zap_huge_pmd+0x203/0x510 [ 38.865818] [] ? __pmd_trans_huge_lock+0x320/0x320 [ 38.872388] [] unmap_single_vma+0xea3/0x1240 [ 38.878454] [] ? vm_normal_page+0x280/0x280 [ 38.884427] [] ? __put_single_page+0x60/0x60 [ 38.890478] [] unmap_vmas+0x81/0xd0 [ 38.895749] [] exit_mmap+0x1c9/0x3a0 executing program executing program executing program executing program executing program executing program [ 38.901113] [] ? SyS_remap_file_pages+0x870/0x870 [ 38.907614] [] ? kmem_cache_free+0x2b4/0x340 [ 38.913668] [] mmput+0xf8/0x2d0 [ 38.918600] [] do_exit+0x8d8/0x26b0 [ 38.923876] [] ? release_task.part.17+0x1200/0x1200 [ 38.930541] [] ? recalc_sigpending+0x76/0xa0 [ 38.936591] [] do_group_exit+0x111/0x330 [ 38.942295] [] get_signal+0x4ec/0x14b0 [ 38.947828] [] do_signal+0x8b/0x1d30 executing program executing program executing program executing program executing program executing program executing program [ 38.953184] [] ? setup_sigcontext+0x780/0x780 [ 38.959323] [] ? file_map_prot_check+0x193/0x310 [ 38.965727] [] ? selinux_file_mprotect+0xf7/0x550 [ 38.972218] [] ? compat_SyS_futex+0x1e1/0x2f0 [ 38.978358] [] ? compat_SyS_get_robust_list+0x310/0x310 [ 38.985367] [] ? exit_to_usermode_loop+0xe4/0x160 [ 38.991855] [] exit_to_usermode_loop+0x11a/0x160 [ 38.998251] [] do_fast_syscall_32+0x61e/0x8b0 executing program executing program executing program executing program executing program executing program executing program [ 39.004387] [] sysenter_flags_fixed+0xd/0x1a [ 39.010726] 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 [ 39.038421] RIP [] page_remove_rmap+0x2e/0x260 [ 39.044794] RSP [ 39.048417] CR2: ffffeafffd378008 [ 39.051864] ---[ end trace c537680e55ace0b4 ]--- [ 39.056607] Kernel panic - not syncing: Fatal exception [ 39.062243] Dumping ftrace buffer: [ 39.065770] (ftrace buffer empty) [ 39.069455] Kernel Offset: disabled [ 39.073081] Rebooting in 86400 seconds..