random: sshd: uninitialized urandom read (32 bytes read, 107 bits of entropy available) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3316 at net/core/dev.c:2448 skb_warn_bad_offload+0x25b/0x390 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/dev.c:2443() lo: caps=(0x00000014401b7c69, 0x0000000000000000) len=2105 data_len=2043 gso_size=1992 gso_type=2 ip_summed=0 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3316 Comm: syzkaller150979 Not tainted 4.4.104-ged884eb #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 4b0eaeb13863647d ffff8800b8ab6f50 ffffffff81cc9b0f ffffffff83842ac0 ffff8800b8ab7028 ffff8800b8ab7018 ffffffff813fc616 0000000041b58ab3 ffffffff83fa5588 ffffffff813fc48f 000000000000006d Call Trace: [] __dump_stack /syzkaller/managers/android-44-kasan-gce/kernel/lib/dump_stack.c:15 [inline] [] dump_stack+0x8e/0xcf /syzkaller/managers/android-44-kasan-gce/kernel/lib/dump_stack.c:51 [] panic+0x187/0x2f1 /syzkaller/managers/android-44-kasan-gce/kernel/kernel/panic.c:112 [] warn_slowpath_common+0x108/0x120 /syzkaller/managers/android-44-kasan-gce/kernel/kernel/panic.c:455 [] warn_slowpath_fmt+0xa7/0xf0 /syzkaller/managers/android-44-kasan-gce/kernel/kernel/panic.c:471 [] skb_warn_bad_offload+0x25b/0x390 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/dev.c:2443 [] __skb_gso_segment+0x346/0x460 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/dev.c:2601 [] skb_gso_segment /syzkaller/managers/android-44-kasan-gce/kernel/include/linux/netdevice.h:3705 [inline] [] validate_xmit_skb.isra.100.part.101+0x3fb/0x950 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/dev.c:2809 [] validate_xmit_skb /syzkaller/managers/android-44-kasan-gce/kernel/include/trace/events/net.h:119 [inline] [] __dev_queue_xmit+0x1148/0x19e0 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/dev.c:3180 [] dev_queue_xmit+0xb/0x10 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/dev.c:3222 [] neigh_resolve_output+0x406/0x750 /syzkaller/managers/android-44-kasan-gce/kernel/net/core/neighbour.c:1312 [] dst_neigh_output /syzkaller/managers/android-44-kasan-gce/kernel/include/net/dst.h:461 [inline] [] ip6_finish_output2+0x90b/0x1bf0 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/ip6_output.c:113 [] ip6_finish_output+0x293/0x700 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/ip6_output.c:131 [] NF_HOOK_COND /syzkaller/managers/android-44-kasan-gce/kernel/include/linux/netfilter.h:240 [inline] [] ip6_output+0x170/0x5b0 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/ip6_output.c:145 [] dst_output /syzkaller/managers/android-44-kasan-gce/kernel/include/net/dst.h:498 [inline] [] ip6_local_out+0x78/0x130 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/output_core.c:169 [] ip6_send_skb+0x92/0x300 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/ip6_output.c:1707 [] udp_v6_send_skb+0x2de/0x1110 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/udp.c:1066 [] udp_v6_push_pending_frames+0x203/0x310 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/udp.c:1098 [] udpv6_sendmsg+0x1bad/0x2360 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv6/udp.c:1358 [] inet_sendmsg+0x26c/0x430 /syzkaller/managers/android-44-kasan-gce/kernel/net/ipv4/af_inet.c:755 [] sock_sendmsg_nosec /syzkaller/managers/android-44-kasan-gce/kernel/net/socket.c:625 [inline] [] sock_sendmsg+0xb5/0xf0 /syzkaller/managers/android-44-kasan-gce/kernel/net/socket.c:635 [] ___sys_sendmsg+0x66d/0x7d0 /syzkaller/managers/android-44-kasan-gce/kernel/net/socket.c:1961 [] __sys_sendmsg+0xc3/0x160 /syzkaller/managers/android-44-kasan-gce/kernel/net/socket.c:1995 [] SYSC_sendmsg /syzkaller/managers/android-44-kasan-gce/kernel/net/socket.c:2006 [inline] [] SyS_sendmsg+0xd/0x20 /syzkaller/managers/android-44-kasan-gce/kernel/net/socket.c:2002 [] entry_SYSCALL_64_fastpath+0x16/0x76 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..