[ 16.225592] random: sshd: uninitialized urandom read (32 bytes read, 32 bits of entropy available) [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.406961] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 20.741048] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.665232] random: sshd: uninitialized urandom read (32 bytes read, 110 bits of entropy available) [ 21.851914] random: sshd: uninitialized urandom read (32 bytes read, 115 bits of entropy available) Warning: Permanently added '10.128.15.214' (ECDSA) to the list of known hosts. [ 27.243964] random: sshd: uninitialized urandom read (32 bytes read, 122 bits of entropy available) net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz4.accept_dad = 0 net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz3.accept_dad = 0 net.ipv6.conf.syz2.router_solicitations = 0 net.ipv6.conf.syz7.accept_dad = 0 net.ipv6.conf.syz1.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "bridge0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "gre0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "gre0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gre0" [ 30.321287] random: nonblocking pool is initialized Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" executing program Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" executing program Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" executing program Cannot find device "erspan0" Cannot find device "erspan0" executing program executing program Cannot find device "erspan0" Cannot find device "erspan0" executing program executing program Cannot find device "erspan0" Cannot find device "erspan0" executing program executing program Cannot find device "erspan0" executing program executing program executing program executing program executing program executing program Cannot find device "erspan0" executing program executing program executing program executing program Cannot find device "erspan0" executing program executing program executing program executing program executing program Cannot find device "erspan0" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program Cannot find device "erspan0" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.831843] kasan: CONFIG_KASAN_INLINE enabled [ 33.849624] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP [ 33.880908] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory access KASAN [ 33.892446] Dumping ftrace buffer: [ 33.895953] (ftrace buffer empty) [ 33.900249] Modules linked in: [ 33.903529] CPU: 0 PID: 5605 Comm: syzkaller105743 Not tainted 4.4.113-gef588ef #33 [ 33.911290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.920615] task: ffff8801cd8a5f00 task.stack: ffff8801cd900000 [ 33.926649] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 33.934892] RSP: 0018:ffff8801cd9079f0 EFLAGS: 00010a07 [ 33.940313] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b [ 33.947555] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 33.954797] RBP: ffff8801cd907a00 R08: 0000000048000000 R09: 0000000000001e30 [ 33.962040] R10: 0000000000002100 R11: 1ffff10039b20f1c R12: 0000000000000004 [ 33.969279] R13: 0000000000000020 R14: ffff8801ce44a100 R15: dffffc0000000000 [ 33.976521] FS: 00007f05cbf1c700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 33.984721] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.990577] CR2: 00007f05cbf1bdb8 CR3: 00000000b8740000 CR4: 0000000000160670 [ 33.997824] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.005909] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.013153] Stack: [ 34.015273] 0000000000000246 ffff8801ce44a258 ffff8801cd907a60 ffffffff825b6f51 [ 34.023259] ffff8801ce44a270 ffffed0039c8944b ffffed0039c8944e ffff8801ce44a268 [ 34.031226] dead4ead00000000 ffff8801ce44a240 0000000000000000 0000000000000000 [ 34.039196] Call Trace: [ 34.041759] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 34.048220] [] sg_finish_rem_req+0x2b5/0x340 [ 34.054247] [] sg_new_read.isra.18+0x17d/0x3c0 [ 34.060456] [] sg_read+0x8bc/0x1490 [ 34.065704] [] ? __check_object_size+0x154/0x35b [ 34.074423] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.081066] [] ? fsnotify+0xee0/0xee0 [ 34.086488] [] ? avc_policy_seqno+0x9/0x20 [ 34.092345] [] do_loop_readv_writev+0x141/0x1e0 [ 34.098634] [] ? security_file_permission+0x89/0x1e0 [ 34.105358] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.111994] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.118627] [] do_readv_writev+0x5dd/0x6e0 [ 34.124482] [] ? vfs_write+0x530/0x530 [ 34.129988] [] ? _raw_spin_unlock+0x2c/0x50 [ 34.135928] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 34.142913] [] ? __fget+0x20b/0x3b0 [ 34.148161] [] ? __fget+0x232/0x3b0 [ 34.153409] [] ? __fget+0x47/0x3b0 [ 34.158828] [] vfs_readv+0x78/0xb0 [ 34.163988] [] SyS_readv+0xd9/0x240 [ 34.169235] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 34.175785] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 34.182331] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 34.188877] Code: b6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 [ 34.215963] RIP [] __free_pages+0x21/0x90 [ 34.221853] RSP [ 34.225455] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 34.232232] Dumping ftrace buffer: [ 34.233722] kasan: CONFIG_KASAN_INLINE enabled [ 34.240305] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.240305] (ftrace buffer empty) [ 34.251310] Modules linked in: [ 34.254591] CPU: 1 PID: 5632 Comm: syzkaller105743 Tainted: G D 4.4.113-gef588ef #33 [ 34.263752] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.273339] task: ffff8801ce165f00 task.stack: ffff8800b2ca0000 [ 34.279371] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 34.287606] RSP: 0018:ffff8800b2ca79f0 EFLAGS: 00010a07 [ 34.293022] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b [ 34.300262] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 34.307501] RBP: ffff8800b2ca7a00 R08: 0000000048000000 R09: 0000000000001e30 [ 34.315521] R10: 0000000000002100 R11: 1ffff10016594f1c R12: 0000000000000004 [ 34.322763] R13: 0000000000000020 R14: ffff8800b2aac200 R15: dffffc0000000000 [ 34.330005] FS: 00007f05cbf1c700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.338203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.344582] CR2: 000000002041ef9f CR3: 00000000b37f6000 CR4: 0000000000160670 [ 34.352692] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.359935] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.367175] Stack: [ 34.369293] 0000000000000246 ffff8800b2aac358 ffff8800b2ca7a60 ffffffff825b6f51 [ 34.377273] ffff8800b2aac370 ffffed001655586b ffffed001655586e ffff8800b2aac368 [ 34.386806] dead4ead00000000 ffff8800b2aac340 0000000000000000 0000000000000000 [ 34.394797] Call Trace: [ 34.397362] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 34.403826] [] sg_finish_rem_req+0x2b5/0x340 [ 34.409859] [] sg_new_read.isra.18+0x17d/0x3c0 [ 34.416059] [] sg_read+0x8bc/0x1490 [ 34.421309] [] ? __check_object_size+0x154/0x35b [ 34.427687] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.434325] [] ? fsnotify+0xee0/0xee0 [ 34.439747] [] ? avc_policy_seqno+0x9/0x20 [ 34.445603] [] do_loop_readv_writev+0x141/0x1e0 [ 34.451892] [] ? security_file_permission+0x89/0x1e0 [ 34.458615] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.465251] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.472151] [] do_readv_writev+0x5dd/0x6e0 [ 34.478008] [] ? vfs_write+0x530/0x530 [ 34.483517] [] ? _raw_spin_unlock+0x2c/0x50 [ 34.489460] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 34.496442] [] ? __fget+0x47/0x3b0 [ 34.501600] [] ? __fget+0x20b/0x3b0 [ 34.507543] [] ? __fget+0x232/0x3b0 [ 34.513916] [] ? __fget+0x47/0x3b0 [ 34.519080] [] vfs_readv+0x78/0xb0 [ 34.524240] [] SyS_readv+0xd9/0x240 [ 34.530196] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 34.536748] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 34.543300] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 34.549845] Code: b6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 [ 34.576822] RIP [] __free_pages+0x21/0x90 executing program [ 34.582720] RSP [ 34.586507] general protection fault: 0000 [#3] PREEMPT SMP KASAN [ 34.593235] Dumping ftrace buffer: [ 34.596392] kasan: CONFIG_KASAN_INLINE enabled [ 34.601311] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.601312] (ftrace buffer empty) [ 34.612318] Modules linked in: [ 34.615597] CPU: 0 PID: 5637 Comm: syzkaller105743 Tainted: G D 4.4.113-gef588ef #33 [ 34.624572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.633898] task: ffff8800b24697c0 task.stack: ffff8801d3940000 [ 34.639920] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 34.648154] RSP: 0018:ffff8801d39479f0 EFLAGS: 00010a07 [ 34.653572] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b [ 34.660812] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 34.668051] RBP: ffff8801d3947a00 R08: 0000000048000000 R09: 0000000000001e30 [ 34.675639] R10: 0000000000002100 R11: 1ffff1003a728f1c R12: 0000000000000004 [ 34.682879] R13: 0000000000000020 R14: ffff8800b2be2100 R15: dffffc0000000000 [ 34.690124] FS: 00007f05cbf1c700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.698324] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.704175] CR2: 0000000020a13000 CR3: 00000000b479e000 CR4: 0000000000160670 [ 34.711417] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.718656] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.726241] Stack: [ 34.728360] 0000000000000246 ffff8800b2be2258 ffff8801d3947a60 ffffffff825b6f51 [ 34.736334] ffff8800b2be2270 ffffed001657c44b ffffed001657c44e ffff8800b2be2268 [ 34.744308] dead4ead00000000 ffff8800b2be2240 0000000000000000 0000000000000000 [ 34.752289] Call Trace: [ 34.754849] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 34.761400] [] sg_finish_rem_req+0x2b5/0x340 [ 34.767426] [] sg_new_read.isra.18+0x17d/0x3c0 [ 34.773629] [] sg_read+0x8bc/0x1490 [ 34.780875] [] ? __check_object_size+0x154/0x35b [ 34.788899] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.795532] [] ? fsnotify+0xee0/0xee0 [ 34.800953] [] ? avc_policy_seqno+0x9/0x20 [ 34.806807] [] do_loop_readv_writev+0x141/0x1e0 [ 34.813442] [] ? security_file_permission+0x89/0x1e0 [ 34.820166] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.826801] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 34.833435] [] do_readv_writev+0x5dd/0x6e0 [ 34.839291] [] ? vfs_write+0x530/0x530 [ 34.844796] [] ? _raw_spin_unlock+0x2c/0x50 [ 34.851430] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 34.858411] [] ? __fget+0x47/0x3b0 [ 34.863830] [] ? __fget+0x20b/0x3b0 [ 34.869075] [] ? __fget+0x232/0x3b0 [ 34.874320] [] ? __fget+0x47/0x3b0 [ 34.879486] [] vfs_readv+0x78/0xb0 [ 34.884642] [] SyS_readv+0xd9/0x240 [ 34.891017] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 34.897566] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 34.904118] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 34.910666] Code: b6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 [ 34.937312] RIP [] __free_pages+0x21/0x90 [ 34.943891] RSP [ 34.947493] general protection fault: 0000 [#4] [ 34.951833] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory access PREEMPT SMP KASAN [ 34.964687] Dumping ftrace buffer: [ 34.968193] (ftrace buffer empty) [ 34.971875] Modules linked in: [ 34.975171] CPU: 1 PID: 5638 Comm: syzkaller105743 Tainted: G D 4.4.113-gef588ef #33 [ 34.984147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.993470] task: ffff8800b246af80 task.stack: ffff8801cd910000 [ 34.999497] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 35.007750] RSP: 0018:ffff8801cd9179f0 EFLAGS: 00010a07 [ 35.013167] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b [ 35.020409] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 35.027648] RBP: ffff8801cd917a00 R08: 0000000048000000 R09: 0000000000001e30 [ 35.034887] R10: 0000000000002100 R11: 1ffff10039b22f1c R12: 0000000000000004 [ 35.042822] R13: 0000000000000020 R14: ffff8801cd86a100 R15: dffffc0000000000 [ 35.050063] FS: 00007f05cbf1c700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.058258] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.064110] CR2: 0000000020a13000 CR3: 00000001ce4b8000 CR4: 0000000000160670 [ 35.071786] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.079026] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.086265] Stack: [ 35.089080] 0000000000000246 ffff8801cd86a258 ffff8801cd917a60 ffffffff825b6f51 [ 35.097747] ffff8801cd86a270 ffffed0039b0d44b ffffed0039b0d44e ffff8801cd86a268 [ 35.105719] dead4ead00000000 ffff8801cd86a240 0000000000000000 0000000000000000 [ 35.113693] Call Trace: [ 35.116255] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 35.122717] [] sg_finish_rem_req+0x2b5/0x340 [ 35.129006] [] sg_new_read.isra.18+0x17d/0x3c0 [ 35.135215] [] sg_read+0x8bc/0x1490 [ 35.140466] [] ? __check_object_size+0x154/0x35b [ 35.147104] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.153740] [] ? fsnotify+0xee0/0xee0 [ 35.159162] [] ? avc_policy_seqno+0x9/0x20 [ 35.165018] [] do_loop_readv_writev+0x141/0x1e0 [ 35.171308] [] ? security_file_permission+0x89/0x1e0 [ 35.178033] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.184672] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.191305] [] do_readv_writev+0x5dd/0x6e0 [ 35.197161] [] ? vfs_write+0x530/0x530 [ 35.202667] [] ? _raw_spin_unlock+0x2c/0x50 [ 35.208610] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 35.215594] [] ? __fget+0x47/0x3b0 [ 35.220752] [] ? __fget+0x20b/0x3b0 [ 35.225996] [] ? __fget+0x232/0x3b0 [ 35.231244] [] ? __fget+0x47/0x3b0 [ 35.236750] [] vfs_readv+0x78/0xb0 [ 35.241910] [] SyS_readv+0xd9/0x240 [ 35.247158] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 35.253709] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 35.260258] [] entry_SYSCALL_64_fastpath+0x1c/0x98 executing program [ 35.266805] Code: b6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 [ 35.293410] RIP [] __free_pages+0x21/0x90 [ 35.299303] RSP [ 35.302909] general protection fault: 0000 [#5] PREEMPT SMP KASAN [ 35.309632] Dumping ftrace buffer: [ 35.313151] (ftrace buffer empty) [ 35.316842] Modules linked in: [ 35.319876] kasan: CONFIG_KASAN_INLINE enabled [ 35.324689] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.324689] CPU: 0 PID: 5643 Comm: syzkaller105743 Tainted: G D 4.4.113-gef588ef #33 [ 35.341684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.351007] task: ffff8800b26597c0 task.stack: ffff8800b2540000 [ 35.357033] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 35.365269] RSP: 0018:ffff8800b25479f0 EFLAGS: 00010a07 [ 35.370686] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b [ 35.377933] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 35.385172] RBP: ffff8800b2547a00 R08: 0000000048000000 R09: 0000000000001e30 [ 35.392414] R10: 0000000000002100 R11: 1ffff100164a8f1c R12: 0000000000000004 [ 35.399655] R13: 0000000000000020 R14: ffff8800b2be4200 R15: dffffc0000000000 [ 35.406899] FS: 00007f05cbf1c700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 35.415100] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.420957] CR2: 0000000020a13000 CR3: 00000000b8752000 CR4: 0000000000160670 [ 35.428197] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.435436] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.442676] Stack: [ 35.444794] 0000000000000246 ffff8800b2be4358 ffff8800b2547a60 ffffffff825b6f51 [ 35.452766] ffff8800b2be4370 ffffed001657c86b ffffed001657c86e ffff8800b2be4368 [ 35.460741] dead4ead00000000 ffff8800b2be4340 0000000000000000 0000000000000000 [ 35.468710] Call Trace: [ 35.471269] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 35.477733] [] sg_finish_rem_req+0x2b5/0x340 [ 35.483764] [] sg_new_read.isra.18+0x17d/0x3c0 [ 35.489963] [] sg_read+0x8bc/0x1490 [ 35.495218] [] ? __check_object_size+0x154/0x35b [ 35.501594] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.508234] [] ? fsnotify+0xee0/0xee0 [ 35.513660] [] ? avc_policy_seqno+0x9/0x20 [ 35.519514] [] do_loop_readv_writev+0x141/0x1e0 [ 35.525803] [] ? security_file_permission+0x89/0x1e0 [ 35.532526] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.539247] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.545888] [] do_readv_writev+0x5dd/0x6e0 [ 35.551742] [] ? vfs_write+0x530/0x530 [ 35.557253] [] ? _raw_spin_unlock+0x2c/0x50 [ 35.563201] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 35.570360] [] ? __fget+0x47/0x3b0 [ 35.575786] [] ? __fget+0x20b/0x3b0 [ 35.581038] [] ? __fget+0x232/0x3b0 [ 35.586283] [] ? __fget+0x47/0x3b0 [ 35.591443] [] vfs_readv+0x78/0xb0 [ 35.596602] [] SyS_readv+0xd9/0x240 [ 35.603411] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 35.609961] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 35.616955] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 35.624108] Code: b6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 [ 35.650810] RIP [] __free_pages+0x21/0x90 [ 35.657917] RSP [ 35.662565] general protection fault: 0000 [#6] [ 35.665643] ---[ end trace 9e79ce07fe81683d ]--- [ 35.665649] Kernel panic - not syncing: Fatal exception [ 35.677705] PREEMPT SMP KASAN [ 35.681448] Dumping ftrace buffer: [ 35.684960] (ftrace buffer empty) [ 35.688642] Modules linked in: [ 35.691926] CPU: 1 PID: 5642 Comm: syzkaller105743 Tainted: G D 4.4.113-gef588ef #33 [ 35.702900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.712228] task: ffff8800b246df00 task.stack: ffff8801ce008000 [ 35.721047] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 35.730414] RSP: 0018:ffff8801ce00f9f0 EFLAGS: 00010a07 [ 35.735834] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b [ 35.743080] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 35.750326] RBP: ffff8801ce00fa00 R08: 0000000048000000 R09: 0000000000001e30 [ 35.757568] R10: 0000000000002100 R11: 1ffff10039c01f1c R12: 0000000000000004 [ 35.764810] R13: 0000000000000020 R14: ffff8801cd86c200 R15: dffffc0000000000 [ 35.772053] FS: 00007f05cbf1c700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 35.780250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.786106] CR2: 0000000020a13000 CR3: 00000000b156a000 CR4: 0000000000160670 [ 35.794481] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.801723] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.808966] Stack: [ 35.811087] 0000000000000246 ffff8801cd86c358 ffff8801ce00fa60 ffffffff825b6f51 [ 35.819072] ffff8801cd86c370 ffffed0039b0d86b ffffed0039b0d86e ffff8801cd86c368 [ 35.827046] dead4ead00000000 ffff8801cd86c340 0000000000000000 0000000000000000 [ 35.835677] Call Trace: [ 35.838245] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 35.846408] [] sg_finish_rem_req+0x2b5/0x340 [ 35.854262] [] sg_new_read.isra.18+0x17d/0x3c0 [ 35.860467] [] sg_read+0x8bc/0x1490 [ 35.865809] [] ? __check_object_size+0x154/0x35b [ 35.872186] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.878823] [] ? fsnotify+0xee0/0xee0 [ 35.884249] [] ? avc_policy_seqno+0x9/0x20 [ 35.890802] [] do_loop_readv_writev+0x141/0x1e0 [ 35.897096] [] ? security_file_permission+0x89/0x1e0 [ 35.903821] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.910461] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 35.917101] [] do_readv_writev+0x5dd/0x6e0 [ 35.922958] [] ? vfs_write+0x530/0x530 [ 35.928991] [] ? _raw_spin_unlock+0x2c/0x50 [ 35.934940] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 35.941924] [] ? __fget+0x47/0x3b0 [ 35.947087] [] ? __fget+0x20b/0x3b0 [ 35.952337] [] ? __fget+0x232/0x3b0 [ 35.957588] [] ? __fget+0x47/0x3b0 [ 35.962755] [] vfs_readv+0x78/0xb0 [ 35.967919] [] SyS_readv+0xd9/0x240 [ 35.973170] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 35.979723] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 35.986711] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 35.993258] Code: b6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 [ 36.020774] RIP [] __free_pages+0x21/0x90 [ 36.026674] RSP [ 36.030899] Dumping ftrace buffer: [ 36.034419] (ftrace buffer empty) [ 36.038097] Kernel Offset: disabled [ 36.041864] Rebooting in 86400 seconds..