[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 12.210560] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.340265] random: sshd: uninitialized urandom read (32 bytes read) [ 17.658632] random: sshd: uninitialized urandom read (32 bytes read) [ 18.193572] random: sshd: uninitialized urandom read (32 bytes read) [ 47.955312] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.38' (ECDSA) to the list of known hosts. [ 53.624820] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program [ 53.720587] IPVS: Creating netns size=2536 id=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.751535] IPVS: Creating netns size=2536 id=2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.774220] IPVS: Creating netns size=2536 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.809670] IPVS: Creating netns size=2536 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 executing program executing program executing program executing program [ 53.847275] IPVS: Creating netns size=2536 id=5 [ 53.864302] IPVS: Creating netns size=2536 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.888751] IPVS: Creating netns size=2536 id=7 [ 53.908715] IPVS: Creating netns size=2536 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 56.630890] BUG: unable to handle kernel paging request at ffffeafff8d70020 [ 56.638294] IP: [] page_remove_rmap+0x37/0x6d0 [ 56.644562] PGD 0 [ 56.646526] [ 56.648178] Oops: 0000 [#1] PREEMPT SMP KASAN [ 56.652666] Dumping ftrace buffer: [ 56.656206] (ftrace buffer empty) [ 56.659908] Modules linked in: [ 56.663227] CPU: 0 PID: 8684 Comm: syz-executor689 Not tainted 4.9.122-g54068d6 #78 [ 56.671018] 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 executing program executing program executing program executing program executing program [ 56.680365] task: ffff8801cdf4b000 task.stack: ffff8801cde58000 [ 56.686412] RIP: 0010:[] [] page_remove_rmap+0x37/0x6d0 [ 56.695129] RSP: 0018:ffff8801cde5f6c0 EFLAGS: 00010246 [ 56.700572] RAX: dffffc0000000000 RBX: ffffeafff8d70000 RCX: 0000000000000000 [ 56.707834] RDX: 1ffffd5fff1ae004 RSI: ffffffff814f5918 RDI: ffffeafff8d70000 [ 56.715089] RBP: ffff8801cde5f6e8 R08: 00000000000369e0 R09: 0000000000000001 [ 56.722521] R10: ffff8801cdf4b000 R11: 0000000000000001 R12: ffff8801cde5f980 [ 56.729791] R13: ffffeafff8d70020 R14: ffffeafff8d70000 R15: 0000000000000001 [ 56.737057] FS: 0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 56.745290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.751202] CR2: ffffeafff8d70020 CR3: 00000001cf998000 CR4: 00000000001606f0 [ 56.758452] Stack: [ 56.760584] ffffeafff8d70020 ffff8801cde5f980 ffff8801cff2f800 ffffeafff8d70000 [ 56.768627] ffff8801ce2a68f0 ffff8801cde5f740 ffffffff8154cb8f ffff8801cde5f990 [ 56.776698] ffff8801cde5f988 ffff8801cde5fa00 00003ffe35c001e0 00000001cff2f000 [ 56.784723] Call Trace: [ 56.787299] [] zap_huge_pmd+0x16f/0x860 [ 56.792907] [] unmap_page_range+0x12ad/0x1730 [ 56.799046] [] ? vm_normal_page_pmd+0x310/0x310 [ 56.805350] [] ? _raw_spin_unlock_irqrestore+0x5a/0x70 [ 56.812259] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 56.819082] [] unmap_single_vma+0x101/0x260 [ 56.825037] [] unmap_vmas+0x102/0x1d0 [ 56.830473] [] exit_mmap+0x214/0x3f0 [ 56.835821] [] ? SyS_munmap+0xa0/0xa0 [ 56.841254] [] ? up_write+0x1a/0x60 [ 56.846530] [] mmput+0xf3/0x2d0 [ 56.851456] [] do_exit+0x906/0x27b0 [ 56.856722] [] ? debug_check_no_locks_freed+0x210/0x210 [ 56.863721] [] ? get_futex_key+0x1090/0x1090 [ 56.869766] [] ? change_protection+0xf0/0x12c0 [ 56.876006] [] ? release_task.part.19+0x1210/0x1210 [ 56.882658] [] ? recalc_sigpending+0x72/0x90 [ 56.888704] [] do_group_exit+0x111/0x340 [ 56.894398] [] get_signal+0x4cf/0x1450 [ 56.899917] [] ? mprotect_fixup+0x437/0x930 [ 56.905885] [] do_signal+0x87/0x19f0 [ 56.911252] [] ? setup_sigcontext+0x7d0/0x7d0 [ 56.917395] [] ? do_mprotect_pkey+0x70c/0x890 [ 56.923547] [] ? do_futex+0x17c0/0x17c0 [ 56.929156] [] ? mprotect_fixup+0x930/0x930 [ 56.935115] [] ? _raw_spin_unlock_irq+0x27/0x50 [ 56.941418] [] ? exit_to_usermode_loop+0xac/0x120 [ 56.947891] [] exit_to_usermode_loop+0xe1/0x120 [ 56.954194] [] do_syscall_64+0x364/0x490 [ 56.959892] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 56.966798] Code: 55 41 54 53 48 89 fb e8 58 b4 e6 ff 4c 8d 6b 20 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 b8 05 00 00 <4c> 8b 73 20 49 89 dc 41 f6 c6 01 0f 85 4b 03 00 00 e8 23 b4 e6 [ 56.994198] RIP [] page_remove_rmap+0x37/0x6d0 [ 57.000569] RSP [ 57.004173] CR2: ffffeafff8d70020 [ 57.007628] ---[ end trace 354a20bf8f9b7c63 ]--- [ 57.007638] BUG: unable to handle kernel paging request at ffffeafff8ea0020 [ 57.007647] IP: [] page_remove_rmap+0x37/0x6d0 [ 57.007652] PGD 0 [ 57.007652] [ 57.007657] Oops: 0000 [#2] PREEMPT SMP KASAN [ 57.007664] Dumping ftrace buffer: [ 57.007667] (ftrace buffer empty) [ 57.007671] Modules linked in: [ 57.007680] CPU: 1 PID: 8760 Comm: syz-executor689 Tainted: G D 4.9.122-g54068d6 #78 [ 57.007683] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.007687] task: ffff8801d4886000 task.stack: ffff8801cda08000 [ 57.007697] RIP: 0010:[] [] page_remove_rmap+0x37/0x6d0 [ 57.007702] RSP: 0018:ffff8801cda0f6c0 EFLAGS: 00010246 [ 57.007706] RAX: dffffc0000000000 RBX: ffffeafff8ea0000 RCX: 0000000000000000 [ 57.007710] RDX: 1ffffd5fff1d4004 RSI: ffffffff814f5918 RDI: ffffeafff8ea0000 [ 57.007714] RBP: ffff8801cda0f6e8 R08: 0000000000000001 R09: 0000000000000000 [ 57.007719] R10: ffff8801d4886000 R11: 0000000000000000 R12: ffff8801cda0f980 [ 57.007723] R13: ffffeafff8ea0020 R14: ffffeafff8ea0000 R15: 0000000000000001 [ 57.007730] FS: 00007f9aad630700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 57.007734] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.007738] CR2: ffffeafff8ea0020 CR3: 00000001c31a2000 CR4: 00000000001606f0 [ 57.007744] Stack: [ 57.007754] ffffeafff8ea0020 ffff8801cda0f980 ffff8801cfefa800 ffffeafff8ea0000 [ 57.007764] ffff8801cef75318 ffff8801cda0f740 ffffffff8154cb8f ffff8801cda0f990 [ 57.007773] ffff8801cda0f988 ffff8801cda0fa00 00003ffe3a8001e0 00000001cfefa000 [ 57.007775] Call Trace: [ 57.007786] [] zap_huge_pmd+0x16f/0x860 [ 57.007795] [] unmap_page_range+0x12ad/0x1730 [ 57.007803] [] ? vm_normal_page_pmd+0x310/0x310 [ 57.007811] [] unmap_single_vma+0x101/0x260 [ 57.007819] [] unmap_vmas+0x102/0x1d0 [ 57.007825] [] exit_mmap+0x214/0x3f0 [ 57.007832] [] ? SyS_munmap+0xa0/0xa0 [ 57.007840] [] mmput+0xf3/0x2d0 [ 57.007848] [] do_exit+0x906/0x27b0 [ 57.007857] [] ? debug_check_no_locks_freed+0x210/0x210 [ 57.007866] [] ? get_futex_key+0x1090/0x1090 [ 57.007873] [] ? change_protection+0xf0/0x12c0 [ 57.007881] [] ? release_task.part.19+0x1210/0x1210 [ 57.007888] [] ? __dequeue_signal+0x79/0x520 [ 57.007896] [] ? recalc_sigpending_tsk+0xf9/0x150 [ 57.007903] [] ? recalc_sigpending+0x72/0x90 [ 57.007910] [] ? dequeue_signal+0xc4/0x4b0 [ 57.007917] [] ? kernel_sigaction+0x230/0x230 [ 57.007925] [] do_group_exit+0x111/0x340 [ 57.007933] [] get_signal+0x4cf/0x1450 [ 57.007939] [] ? mprotect_fixup+0x437/0x930 [ 57.007948] [] do_signal+0x87/0x19f0 [ 57.007956] [] ? setup_sigcontext+0x7d0/0x7d0 [ 57.007963] [] ? vmacache_find+0x57/0x290 [ 57.007969] [] ? do_mprotect_pkey+0x70c/0x890 [ 57.007977] [] ? do_futex+0x17c0/0x17c0 [ 57.007984] [] ? mprotect_fixup+0x930/0x930 [ 57.007992] [] ? finish_task_switch+0x1c1/0x640 [ 57.008000] [] ? finish_task_switch+0x1ed/0x640 [ 57.008007] [] exit_to_usermode_loop+0xe1/0x120 [ 57.008014] [] do_syscall_64+0x364/0x490 [ 57.008022] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 57.008140] Code: 55 41 54 53 48 89 fb e8 58 b4 e6 ff 4c 8d 6b 20 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 b8 05 00 00 <4c> 8b 73 20 49 89 dc 41 f6 c6 01 0f 85 4b 03 00 00 e8 23 b4 e6 [ 57.008148] RIP [] page_remove_rmap+0x37/0x6d0 [ 57.008150] RSP [ 57.008152] CR2: ffffeafff8ea0020 [ 57.008159] ---[ end trace 354a20bf8f9b7c64 ]--- [ 57.008163] Kernel panic - not syncing: Fatal exception [ 58.166938] Shutting down cpus with NMI [ 58.171211] Dumping ftrace buffer: [ 58.174729] (ftrace buffer empty) [ 58.178413] Kernel Offset: disabled [ 58.182013] Rebooting in 86400 seconds..