[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.034053][ T7025] general protection fault, probably for non-canonical address 0xdffffc0004000809: 0000 [#1] PREEMPT SMP KASAN [ 59.046308][ T7025] KASAN: probably user-memory-access in range [0x0000000020004048-0x000000002000404f] [ 59.056602][ T7025] CPU: 0 PID: 7025 Comm: syz-executor327 Not tainted 5.7.0-rc4-syzkaller #0 [ 59.065488][ T7025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.075553][ T7025] RIP: 0010:put_cmsg+0x1a6/0x3e0 [ 59.080468][ T7025] Code: 89 ee e8 cd 37 55 fb 45 84 ed 0f 85 16 01 00 00 e8 8f 36 55 fb 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e c9 01 00 00 8b 44 24 08 48 8d [ 59.100834][ T7025] RSP: 0018:ffffc90001277990 EFLAGS: 00010206 [ 59.106947][ T7025] RAX: dffffc0000000000 RBX: 0000000020004040 RCX: ffffffff861df603 [ 59.114916][ T7025] RDX: 0000000004000809 RSI: ffffffff861df611 RDI: 0000000020004048 [ 59.122965][ T7025] RBP: ffffc90001277aa0 R08: ffff888094956340 R09: 0000000000000000 [ 59.131059][ T7025] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff9200024ef35 [ 59.139005][ T7025] R13: 0000000000000000 R14: 0000000000000014 R15: 0000000000018ff8 [ 59.146998][ T7025] FS: 0000000002520880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 59.155916][ T7025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.162472][ T7025] CR2: 0000000020000080 CR3: 00000000a6af0000 CR4: 00000000001406f0 [ 59.170876][ T7025] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.178823][ T7025] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.186772][ T7025] Call Trace: [ 59.190047][ T7025] ? __scm_destroy+0x130/0x130 [ 59.194791][ T7025] ? __local_bh_enable_ip+0x159/0x270 [ 59.200230][ T7025] do_ipv6_getsockopt.isra.0+0x21f6/0x2590 [ 59.206118][ T7025] ? rcu_read_unlock+0xa0/0xa0 [ 59.210861][ T7025] ? release_pages+0x656/0x19b0 [ 59.215689][ T7025] ? mark_lock+0x12b/0xf10 [ 59.220083][ T7025] ? do_huge_pmd_anonymous_page+0xb9c/0x1990 [ 59.226061][ T7025] ? print_usage_bug+0x240/0x240 [ 59.231051][ T7025] ? lock_downgrade+0x840/0x840 [ 59.235887][ T7025] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.241432][ T7025] ? mark_held_locks+0x9f/0xe0 [ 59.246188][ T7025] ? do_huge_pmd_anonymous_page+0x13ea/0x1990 [ 59.252766][ T7025] ? lockdep_hardirqs_on+0x463/0x620 [ 59.258050][ T7025] ? do_huge_pmd_anonymous_page+0xcac/0x1990 [ 59.264108][ T7025] ? aa_label_sk_perm+0x89/0xe0 [ 59.268941][ T7025] ? ipv6_getsockopt+0x177/0x270 [ 59.273867][ T7025] ipv6_getsockopt+0x177/0x270 [ 59.278612][ T7025] ? do_ipv6_getsockopt.isra.0+0x2590/0x2590 [ 59.284819][ T7025] ? ipv6_setsockopt+0xc1/0x180 [ 59.290190][ T7025] tcp_getsockopt+0x86/0xd0 [ 59.294686][ T7025] __sys_getsockopt+0x14b/0x2e0 [ 59.299524][ T7025] ? kernel_accept+0x360/0x360 [ 59.304270][ T7025] ? handle_mm_fault+0x29e/0x660 [ 59.309185][ T7025] __x64_sys_getsockopt+0xba/0x150 [ 59.314446][ T7025] ? lockdep_hardirqs_on+0x463/0x620 [ 59.319708][ T7025] do_syscall_64+0xf6/0x7d0 [ 59.324202][ T7025] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.330111][ T7025] RIP: 0033:0x4401d9 [ 59.333983][ T7025] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.353559][ T7025] RSP: 002b:00007fff7e603cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 59.362117][ T7025] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 59.370095][ T7025] RDX: 0000000000000006 RSI: 0000000000000029 RDI: 0000000000000003 [ 59.378068][ T7025] RBP: 00000000006ca018 R08: 0000000020000040 R09: 00000000004002c8 [ 59.386029][ T7025] R10: 0000000020004040 R11: 0000000000000246 R12: 0000000000401a60 [ 59.393975][ T7025] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 59.401948][ T7025] Modules linked in: [ 59.406378][ T7025] ---[ end trace b66d66850e28e7f7 ]--- [ 59.411916][ T7025] RIP: 0010:put_cmsg+0x1a6/0x3e0 [ 59.416921][ T7025] Code: 89 ee e8 cd 37 55 fb 45 84 ed 0f 85 16 01 00 00 e8 8f 36 55 fb 48 8d 7b 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e c9 01 00 00 8b 44 24 08 48 8d [ 59.436689][ T7025] RSP: 0018:ffffc90001277990 EFLAGS: 00010206 [ 59.442978][ T7025] RAX: dffffc0000000000 RBX: 0000000020004040 RCX: ffffffff861df603 [ 59.451011][ T7025] RDX: 0000000004000809 RSI: ffffffff861df611 RDI: 0000000020004048 [ 59.459073][ T7025] RBP: ffffc90001277aa0 R08: ffff888094956340 R09: 0000000000000000 [ 59.467200][ T7025] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff9200024ef35 [ 59.475184][ T7025] R13: 0000000000000000 R14: 0000000000000014 R15: 0000000000018ff8 [ 59.483200][ T7025] FS: 0000000002520880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 59.492280][ T7025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.498929][ T7025] CR2: 0000000020000080 CR3: 00000000a6af0000 CR4: 00000000001406f0 [ 59.508255][ T7025] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.516297][ T7025] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.524308][ T7025] Kernel panic - not syncing: Fatal exception [ 59.532792][ T7025] Kernel Offset: disabled [ 59.537160][ T7025] Rebooting in 86400 seconds..