[ 21.330843] random: sshd: uninitialized urandom read (32 bytes read, 34 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: [ 25.068828] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 25.486287] random: sshd: uninitialized urandom read (32 bytes read, 38 bits of entropy available) [ 26.370538] random: sshd: uninitialized urandom read (32 bytes read, 103 bits of entropy available) [ 26.541423] random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available) Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. [ 31.955310] random: sshd: uninitialized urandom read (32 bytes read, 114 bits of entropy available) net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 32.077289] IPVS: Creating netns size=2552 id=1 net.ipv6.conf.syz_tun.accept_dad = 0 [ 32.124169] IPVS: Creating netns size=2552 id=2 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 32.170284] IPVS: Creating netns size=2552 id=3 RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 32.232329] IPVS: Creating netns size=2552 id=4 RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported [ 32.305337] IPVS: Creating netns size=2552 id=5 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 32.403976] IPVS: Creating netns size=2552 id=6 RTNETLINK answers: File exists net.ipv6.conf.syz_tun.accept_dad = 0 RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.router_solicitations = 0 [ 32.506353] IPVS: Creating netns size=2552 id=7 RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 32.612603] IPVS: Creating netns size=2552 id=8 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.accept_dad = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: File exists Cannot find device "bridge0" RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported RTNETLINK answers: File exists Cannot find device "bridge0" Cannot find device "vcan0" RTNETLINK answers: File exists RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: File exists Cannot find device "vcan0" RTNETLINK answers: Operation not supported RTNETLINK answers: File exists RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" RTNETLINK answers: File exists RTNETLINK answers: File exists Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" RTNETLINK answers: File exists Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "gretap0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "gretap0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "ip_vti0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "ip_vti0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "ip_vti0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "gretap0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "ip_vti0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "ip6_vti0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "ip6_vti0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "ip_vti0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "ip6_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "ip6tnl0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "ip_vti0" Cannot find device "gre0" Cannot find device "ip6_vti0" Cannot find device "gre0" Cannot find device "ip6tnl0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip6gre0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip_vti0" Cannot find device "ip6gre0" Cannot find device "gretap0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "gretap0" Cannot find device "ip6gre0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6tnl0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6gre0" Cannot find device "ip_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6_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 "ip6gretap0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip_vti0" Cannot find device "ip6gretap0" Cannot find device "ip6_vti0" Cannot find device "ip6gre0" Cannot find device "ip_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6gretap0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6gretap0" 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 "ip6_vti0" Cannot find device "erspan0" Cannot find device "ip6_vti0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6_vti0" Cannot find device "ip6_vti0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "erspan0" Cannot find device "ip6_vti0" Cannot find device "ip6tnl0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gretap0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "bond0" Cannot find device "ip6gre0" Cannot find device "ip6tnl0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6tnl0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "ip6tnl0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "ip6tnl0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "veth0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "veth0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "ip6gre0" Cannot find device "veth0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "veth0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "veth1" executing program Cannot find device "erspan0" Cannot find device "bond0" executing program Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "veth0" executing program Cannot find device "bond0" [ 37.782795] kasan: CONFIG_KASAN_INLINE enabled [ 37.810963] kasan: GPF could be caused by NULL-ptr deref or user memory accesskasan: CONFIG_KASAN_INLINE enabled [ 37.846996] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.859985] Dumping ftrace buffer: [ 37.863504] (ftrace buffer empty) [ 37.867187] Modules linked in: [ 37.870470] CPU: 0 PID: 5658 Comm: syzkaller411600 Not tainted 4.4.120-gd63fdf6 #28 [ 37.878233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.887555] task: ffff8800ba620000 task.stack: ffff8801d97e0000 [ 37.893580] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 37.901810] RSP: 0018:ffff8801d97e79f0 EFLAGS: 00010a07 [ 37.907227] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb [ 37.914465] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 37.921704] RBP: ffff8801d97e7a00 R08: 0000000048000000 R09: 0000000000001e30 [ 37.928941] R10: 0000000000002100 R11: 1ffff1003b2fcf1c R12: 0000000000000004 [ 37.936182] R13: 0000000000000020 R14: ffff8801d8514200 R15: dffffc0000000000 [ 37.943421] FS: 00007f7fb3de2700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 37.951614] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.957461] CR2: 00007f274cb23000 CR3: 00000001c9d46000 CR4: 0000000000160670 [ 37.964702] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.971939] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.979174] Stack: [ 37.981291] 0000000000000246 ffff8801d8514358 ffff8801d97e7a60 ffffffff825b8611 [ 37.989348] ffff8801d8514370 ffffed003b0a286b ffffed003b0a286e ffff8801d8514368 [ 37.997320] dead4ead00000000 ffff8801d8514340 0000000000000000 0000000000000000 [ 38.005283] Call Trace: [ 38.007841] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 38.014301] [] sg_finish_rem_req+0x2b5/0x340 [ 38.020326] [] sg_new_read.isra.18+0x17d/0x3c0 [ 38.026528] [] sg_read+0x8bc/0x1490 [ 38.031774] [] ? __check_object_size+0x154/0x35b [ 38.038145] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.044777] [] ? fsnotify+0xee0/0xee0 [ 38.050287] [] ? avc_policy_seqno+0x9/0x20 [ 38.056138] [] do_loop_readv_writev+0x141/0x1e0 [ 38.062424] [] ? security_file_permission+0x89/0x1e0 [ 38.069144] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.075778] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.082414] [] do_readv_writev+0x5dd/0x6e0 [ 38.088267] [] ? vfs_write+0x530/0x530 [ 38.093773] [] ? sg_ioctl+0x29f0/0x29f0 [ 38.099366] [] ? __vfs_write+0x10b/0x450 [ 38.105045] [] ? quarantine_put+0xab/0x180 [ 38.110901] [] ? __fget+0x213/0x3b0 [ 38.116147] [] ? __fget+0x23a/0x3b0 [ 38.121390] [] ? __fget+0x47/0x3b0 [ 38.126549] [] vfs_readv+0x78/0xb0 [ 38.131707] [] SyS_readv+0xd9/0x240 [ 38.136951] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 38.143499] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 38.149964] [] entry_SYSCALL_64_fastpath+0x1c/0x98 Cannot find device "erspan0" executing program Cannot find device "veth0" [ 38.156516] Code: c6 a0 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 [ 38.183120] RIP [] __free_pages+0x21/0x90 [ 38.189005] RSP [ 38.192606] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 38.199335] Dumping ftrace buffer: [ 38.202852] (ftrace buffer empty) [ 38.205335] kasan: CONFIG_KASAN_INLINE enabled [ 38.211088] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.218414] Modules linked in: [ 38.221576] CPU: 1 PID: 5638 Comm: syzkaller411600 Tainted: G D 4.4.120-gd63fdf6 #28 [ 38.230549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.239871] task: ffff8801d8a14800 task.stack: ffff8800ac5b8000 [ 38.245892] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 38.254125] RSP: 0018:ffff8800ac5bf9f0 EFLAGS: 00010a07 [ 38.259540] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb [ 38.266781] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 38.274024] RBP: ffff8800ac5bfa00 R08: 0000000048000000 R09: 0000000000001e30 [ 38.281264] R10: 0000000000002100 R11: 1ffff100158b7f1c R12: 0000000000000004 [ 38.288502] R13: 0000000000000020 R14: ffff8801d8c9a100 R15: dffffc0000000000 [ 38.295743] FS: 00007f7fb3e03700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 38.303940] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.309790] CR2: 00007ffd6285e6bc CR3: 00000001c9d46000 CR4: 0000000000160670 [ 38.317032] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.324269] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.331506] Stack: [ 38.333623] 0000000000000246 ffff8801d8c9a258 ffff8800ac5bfa60 ffffffff825b8611 [ 38.341591] ffff8801d8c9a270 ffffed003b19344b ffffed003b19344e ffff8801d8c9a268 [ 38.349588] dead4ead00000000 ffff8801d8c9a240 0000000000000000 0000000000000000 [ 38.357559] Call Trace: [ 38.360123] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 38.366583] [] sg_finish_rem_req+0x2b5/0x340 [ 38.372608] [] sg_new_read.isra.18+0x17d/0x3c0 [ 38.378807] [] sg_read+0x8bc/0x1490 [ 38.384054] [] ? __check_object_size+0x154/0x35b [ 38.390431] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.397068] [] ? fsnotify+0xee0/0xee0 [ 38.403038] [] ? avc_policy_seqno+0x9/0x20 [ 38.408894] [] do_loop_readv_writev+0x141/0x1e0 [ 38.415187] [] ? security_file_permission+0x89/0x1e0 [ 38.421912] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.428547] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.435183] [] do_readv_writev+0x5dd/0x6e0 [ 38.441034] [] ? vfs_write+0x530/0x530 [ 38.446538] [] ? sg_ioctl+0x29f0/0x29f0 [ 38.452129] [] ? __vfs_write+0x10b/0x450 [ 38.457809] [] ? quarantine_put+0xab/0x180 [ 38.463663] [] ? __fget+0x213/0x3b0 [ 38.468907] [] ? __fget+0x23a/0x3b0 [ 38.474153] [] ? __fget+0x47/0x3b0 [ 38.479310] [] vfs_readv+0x78/0xb0 [ 38.484466] [] SyS_readv+0xd9/0x240 [ 38.489710] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 38.496256] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 38.502720] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 38.509262] Code: c6 a0 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 [ 38.536098] RIP [] __free_pages+0x21/0x90 [ 38.541982] RSP [ 38.545585] general protection fault: 0000 [#3] PREEMPT SMP KASAN [ 38.552318] Dumping ftrace buffer: [ 38.555835] (ftrace buffer empty) [ 38.559524] Modules linked in: [ 38.562825] CPU: 0 PID: 5672 Comm: syzkaller411600 Tainted: G D 4.4.120-gd63fdf6 #28 [ 38.571815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.581151] task: ffff8800baacb000 task.stack: ffff8800ba408000 [ 38.587188] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 38.595447] RSP: 0018:ffff8800ba40f9f0 EFLAGS: 00010a07 [ 38.600875] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb [ 38.608130] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 38.615382] RBP: ffff8800ba40fa00 R08: 0000000048000000 R09: 0000000000001e30 [ 38.622634] R10: 0000000000002100 R11: 1ffff10017481f1c R12: 0000000000000004 [ 38.629888] R13: 0000000000000020 R14: ffff8801d9758000 R15: dffffc0000000000 [ 38.637139] FS: 00007f7fb3dc1700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 38.645349] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.651211] CR2: 0000000000619570 CR3: 00000001c9d46000 CR4: 0000000000160670 [ 38.658472] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.665727] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.672977] Stack: [ 38.675113] 0000000000000246 ffff8801d9758158 ffff8800ba40fa60 ffffffff825b8611 [ 38.683130] ffff8801d9758170 ffffed003b2eb02b ffffed003b2eb02e ffff8801d9758168 [ 38.691138] dead4ead00000000 ffff8801d9758140 0000000000000000 0000000000000000 [ 38.699151] Call Trace: [ 38.701725] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 38.708205] [] sg_finish_rem_req+0x2b5/0x340 [ 38.714252] [] sg_new_read.isra.18+0x17d/0x3c0 [ 38.720469] [] sg_read+0x8bc/0x1490 [ 38.725823] [] ? __check_object_size+0x154/0x35b [ 38.732217] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.738865] [] ? fsnotify+0xee0/0xee0 [ 38.744303] [] ? avc_policy_seqno+0x9/0x20 [ 38.750179] [] do_loop_readv_writev+0x141/0x1e0 [ 38.756484] [] ? security_file_permission+0x89/0x1e0 executing program Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "veth1" [ 38.763221] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.769873] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 38.776522] [] do_readv_writev+0x5dd/0x6e0 [ 38.782390] [] ? vfs_write+0x530/0x530 [ 38.787920] [] ? sg_ioctl+0x29f0/0x29f0 [ 38.793530] [] ? __vfs_write+0x10b/0x450 [ 38.799230] [] ? __fget+0x47/0x3b0 [ 38.800306] kasan: CONFIG_KASAN_INLINE enabled [ 38.808955] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.808956] [] ? avc_policy_seqno+0x9/0x20 [ 38.822129] [] ? __fget+0x213/0x3b0 [ 38.827373] [] ? __fget+0x23a/0x3b0 [ 38.832618] [] ? __fget+0x47/0x3b0 [ 38.837777] [] vfs_readv+0x78/0xb0 [ 38.842939] [] SyS_readv+0xd9/0x240 [ 38.848182] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 38.854730] [] ? finish_task_switch+0x1e7/0x4e0 [ 38.861020] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 38.867482] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 38.874026] Code: c6 a0 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 [ 38.900603] RIP [] __free_pages+0x21/0x90 [ 38.906488] RSP [ 38.910086] general protection fault: 0000 [#4] PREEMPT SMP KASAN [ 38.916795] Dumping ftrace buffer: [ 38.920316] (ftrace buffer empty) [ 38.924013] Modules linked in:[ 38.925592] kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.937807] CPU: 1 PID: 5728 Comm: syzkaller411600 Tainted: G D 4.4.120-gd63fdf6 #28 [ 38.946783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.956104] task: ffff8801d81a4800 task.stack: ffff8800aa7b0000 [ 38.962130] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 38.970367] RSP: 0018:ffff8800aa7b79f0 EFLAGS: 00010a07 [ 38.975783] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb [ 38.983027] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 38.990265] RBP: ffff8800aa7b7a00 R08: 0000000048000000 R09: 0000000000001e30 [ 38.997502] R10: 0000000000002100 R11: 1ffff100154f6f1c R12: 0000000000000004 [ 39.004740] R13: 0000000000000020 R14: ffff8800b19fc200 R15: dffffc0000000000 [ 39.011982] FS: 00007f7fb3e03700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 39.020186] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.026036] CR2: 000000002085dff0 CR3: 00000001c9d82000 CR4: 0000000000160670 [ 39.033276] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.040516] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.047751] Stack: [ 39.049867] 0000000000000246 ffff8800b19fc358 ffff8800aa7b7a60 ffffffff825b8611 [ 39.057837] ffff8800b19fc370 ffffed001633f86b ffffed001633f86e ffff8800b19fc368 [ 39.065807] dead4ead00000000 ffff8800b19fc340 0000000000000000 0000000000000000 [ 39.073782] Call Trace: [ 39.076344] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 39.082806] [] sg_finish_rem_req+0x2b5/0x340 [ 39.088831] [] sg_new_read.isra.18+0x17d/0x3c0 [ 39.095033] [] sg_read+0x8bc/0x1490 [ 39.100282] [] ? __check_object_size+0x154/0x35b [ 39.106660] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.113296] [] ? fsnotify+0xee0/0xee0 [ 39.118718] [] ? avc_policy_seqno+0x9/0x20 [ 39.124575] [] do_loop_readv_writev+0x141/0x1e0 [ 39.130862] [] ? security_file_permission+0x89/0x1e0 [ 39.137585] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.144220] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.150853] [] do_readv_writev+0x5dd/0x6e0 [ 39.156706] [] ? vfs_write+0x530/0x530 [ 39.162212] [] ? _raw_spin_unlock+0x2c/0x50 [ 39.168155] [] ? do_huge_pmd_anonymous_page+0x3dd/0xa10 [ 39.175138] [] ? __fget+0x47/0x3b0 [ 39.180296] [] ? avc_policy_seqno+0x9/0x20 [ 39.186149] [] ? __fget+0x213/0x3b0 [ 39.191392] [] ? __fget+0x23a/0x3b0 [ 39.196638] [] ? __fget+0x47/0x3b0 [ 39.201801] [] vfs_readv+0x78/0xb0 [ 39.206959] [] SyS_readv+0xd9/0x240 [ 39.212205] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 39.218755] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 39.225303] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 39.231846] Code: c6 a0 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 [ 39.258443] RIP [] __free_pages+0x21/0x90 executing program executing program [ 39.264330] RSP [ 39.267934] general protection fault: 0000 [#5] [ 39.268030] random: nonblocking pool is initialized [ 39.277497] PREEMPT SMP KASAN [ 39.281256] Dumping ftrace buffer: [ 39.284770] (ftrace buffer empty) [ 39.288461] Modules linked in: [ 39.291763] CPU: 0 PID: 5733 Comm: syzkaller411600 Tainted: G D 4.4.120-gd63fdf6 #28 [ 39.300750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.310087] task: ffff8800ba9fe000 task.stack: ffff8801d7960000 Cannot find device "bond0" executing program [ 39.316122] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 39.324383] RSP: 0018:ffff8801d79679f0 EFLAGS: 00010a07 [ 39.326354] kasan: CONFIG_KASAN_INLINE enabled [ 39.334359] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.334359] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb [ 39.348922] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 39.356161] RBP: ffff8801d7967a00 R08: 0000000048000000 R09: 0000000000001e30 [ 39.363402] R10: 0000000000002100 R11: 1ffff1003af2cf1c R12: 0000000000000004 [ 39.370641] R13: 0000000000000020 R14: ffff8801d9632100 R15: dffffc0000000000 [ 39.377883] FS: 00007f7fb3da0700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 39.386077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.391927] CR2: 00007f387fd08244 CR3: 00000001c9d46000 CR4: 0000000000160670 [ 39.399184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.406423] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.413661] Stack: [ 39.415777] 0000000000000246 ffff8801d9632258 ffff8801d7967a60 ffffffff825b8611 [ 39.423748] ffff8801d9632270 ffffed003b2c644b ffffed003b2c644e ffff8801d9632268 [ 39.431717] dead4ead00000000 ffff8801d9632240 0000000000000000 0000000000000000 [ 39.439698] Call Trace: [ 39.442262] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 39.448725] [] sg_finish_rem_req+0x2b5/0x340 [ 39.454761] [] sg_new_read.isra.18+0x17d/0x3c0 [ 39.460962] [] sg_read+0x8bc/0x1490 [ 39.466209] [] ? __check_object_size+0x154/0x35b [ 39.472581] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.479217] [] ? fsnotify+0xee0/0xee0 [ 39.484638] [] ? avc_policy_seqno+0x9/0x20 [ 39.490492] [] do_loop_readv_writev+0x141/0x1e0 [ 39.496780] [] ? security_file_permission+0x89/0x1e0 [ 39.503501] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.510136] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.516770] [] do_readv_writev+0x5dd/0x6e0 [ 39.522623] [] ? vfs_write+0x530/0x530 [ 39.528127] [] ? sg_ioctl+0x29f0/0x29f0 [ 39.533720] [] ? __vfs_write+0x10b/0x450 [ 39.539400] [] ? __fget+0x47/0x3b0 [ 39.544561] [] ? avc_policy_seqno+0x9/0x20 [ 39.550418] [] ? __fget+0x213/0x3b0 [ 39.555668] [] ? __fget+0x23a/0x3b0 [ 39.560912] [] ? __fget+0x47/0x3b0 [ 39.566702] [] vfs_readv+0x78/0xb0 [ 39.571860] [] SyS_readv+0xd9/0x240 [ 39.577106] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 39.583653] [] ? finish_task_switch+0x1e7/0x4e0 [ 39.589946] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 39.596406] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 39.602949] Code: c6 a0 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 [ 39.629559] RIP [] __free_pages+0x21/0x90 [ 39.635449] RSP [ 39.639052] general protection fault: 0000 [#6] [ 39.639603] ---[ end trace 3e8aab4e021e3208 ]--- [ 39.639607] Kernel panic - not syncing: Fatal exception [ 39.653753] PREEMPT SMP KASAN [ 39.657483] Dumping ftrace buffer: [ 39.660991] (ftrace buffer empty) [ 39.664673] Modules linked in: [ 39.667958] CPU: 1 PID: 5741 Comm: syzkaller411600 Tainted: G D 4.4.120-gd63fdf6 #28 [ 39.676937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.686264] task: ffff8801d8246000 task.stack: ffff8801d7ac8000 [ 39.692289] RIP: 0010:[] [] __free_pages+0x21/0x90 [ 39.700526] RSP: 0018:ffff8801d7acf9f0 EFLAGS: 00010a07 [ 39.705947] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb [ 39.713190] RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c [ 39.720434] RBP: ffff8801d7acfa00 R08: 0000000048000000 R09: 0000000000001e30 [ 39.727676] R10: 0000000000002100 R11: 1ffff1003af59f1c R12: 0000000000000004 [ 39.734918] R13: 0000000000000020 R14: ffff8801c6294200 R15: dffffc0000000000 [ 39.742162] FS: 00007f7fb3dc1700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 39.750357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.756208] CR2: 00007fccb6c001c4 CR3: 00000001c9d82000 CR4: 0000000000160670 [ 39.763456] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.770702] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.777941] Stack: [ 39.780061] 0000000000000246 ffff8801c6294358 ffff8801d7acfa60 ffffffff825b8611 [ 39.788044] ffff8801c6294370 ffffed0038c5286b ffffed0038c5286e ffff8801c6294368 [ 39.796025] dead4ead00000000 ffff8801c6294340 0000000000000000 0000000000000000 [ 39.803998] Call Trace: [ 39.806562] [] sg_remove_scat.isra.17+0x1c1/0x2d0 [ 39.813028] [] sg_finish_rem_req+0x2b5/0x340 [ 39.819064] [] sg_new_read.isra.18+0x17d/0x3c0 [ 39.825267] [] sg_read+0x8bc/0x1490 [ 39.830517] [] ? __check_object_size+0x154/0x35b [ 39.836896] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.843533] [] ? fsnotify+0xee0/0xee0 [ 39.848956] [] ? avc_policy_seqno+0x9/0x20 [ 39.854816] [] do_loop_readv_writev+0x141/0x1e0 [ 39.861106] [] ? security_file_permission+0x89/0x1e0 [ 39.867917] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.874555] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 39.881194] [] do_readv_writev+0x5dd/0x6e0 [ 39.887049] [] ? vfs_write+0x530/0x530 [ 39.892560] [] ? sg_ioctl+0x29f0/0x29f0 [ 39.898158] [] ? __vfs_write+0x10b/0x450 [ 39.903843] [] ? __fget+0x47/0x3b0 [ 39.909003] [] ? avc_policy_seqno+0x9/0x20 [ 39.914862] [] ? __fget+0x213/0x3b0 [ 39.920369] [] ? __fget+0x23a/0x3b0 [ 39.925615] [] ? __fget+0x47/0x3b0 [ 39.930778] [] vfs_readv+0x78/0xb0 [ 39.935939] [] SyS_readv+0xd9/0x240 [ 39.941189] [] ? rw_copy_check_uvector+0x2b0/0x2b0 [ 39.947739] [] ? finish_task_switch+0x1e7/0x4e0 [ 39.954028] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 39.960498] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 39.967046] Code: c6 a0 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 [ 39.993841] RIP [] __free_pages+0x21/0x90 [ 39.999735] RSP [ 40.003742] Dumping ftrace buffer: [ 40.007260] (ftrace buffer empty) [ 40.010935] Kernel Offset: disabled [ 40.014527] Rebooting in 86400 seconds..