INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-mmots-kasan-gce-6,10.128.15.216' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   47.145950] usercopy: kernel memory exposure attempt detected from ffff8801d42f5630 (SCTPv6) (11 bytes)
[   47.147392] ------------[ cut here ]------------
[   47.148122] kernel BUG at mm/usercopy.c:84!
[   47.148732] invalid opcode: 0000 [#1] SMP KASAN
[   47.149369] Dumping ftrace buffer:
[   47.149842]    (ftrace buffer empty)
[   47.150335] Modules linked in:
[   47.150768] CPU: 0 PID: 2985 Comm: syzkaller458008 Not tainted 4.14.0-rc5-mm1+ #20
[   47.151787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.153005] task: ffff8801d1de40c0 task.stack: ffff8801d1ea8000
[   47.153810] RIP: 0010:__check_object_size+0x3a2/0x4f0
[   47.154514] RSP: 0018:ffff8801d1eaf0f0 EFLAGS: 00010286
[   47.155221] RAX: 000000000000005b RBX: ffffffff8511a180 RCX: 0000000000000000
[   47.156172] RDX: 000000000000005b RSI: 1ffff1003a3d5dde RDI: ffffed003a3d5e12
[   47.157123] RBP: ffff8801d1eaf1e0 R08: 0000000000000001 R09: 0000000000000000
[   47.158105] R10: ffff8801d1eaf098 R11: 0000000000000000 R12: ffffffff8511a140
[   47.159055] R13: ffff8801d42f5630 R14: 000000000000000b R15: ffffea000750bd40
[   47.160007] FS:  00000000016dd880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   47.161091] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.161866] CR2: 0000000020290000 CR3: 00000001d1f48000 CR4: 00000000001406f0
[   47.162835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   47.163883] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   47.164834] Call Trace:
[   47.165193]  ? lock_release+0xa40/0xa40
[   47.165754]  ? check_stack_object+0x140/0x140
[   47.168185]  ? __local_bh_enable_ip+0x9d/0x160
[   47.172735]  ? __might_sleep+0x95/0x190
[   47.176682]  sctp_getsockopt+0x2b90/0x70b0
[   47.180885]  ? do_raw_spin_trylock+0x190/0x190
[   47.185438]  ? mark_held_locks+0xaf/0x100
[   47.189553]  ? sctp_getsockopt_peeloff_common+0x2f0/0x2f0
[   47.195055]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   47.200040]  ? pagevec_lru_move_fn+0x1a4/0x230
[   47.204588]  ? get_kernel_page+0x110/0x110
[   47.208793]  ? __lru_cache_add+0x2a4/0x410
[   47.212999]  ? __pagevec_lru_add+0x30/0x30
[   47.217203]  ? save_stack+0xa3/0xd0
[   47.220793]  ? save_stack+0x43/0xd0
[   47.224384]  ? kasan_kmalloc+0xad/0xe0
[   47.228236]  ? print_irqtrace_events+0x270/0x270
[   47.232957]  ? __handle_mm_fault+0x1827/0x39c0
[   47.237507]  ? check_noncircular+0x20/0x20
[   47.241704]  ? lru_cache_add+0x1c7/0x3a0
[   47.245733]  ? get_mem_cgroup_from_mm+0x710/0x710
[   47.250540]  ? lru_cache_add_file+0x20/0x20
[   47.254827]  ? __mem_cgroup_threshold+0x8f0/0x8f0
[   47.259635]  ? mark_held_locks+0xaf/0x100
[   47.263749]  ? find_held_lock+0x35/0x1d0
[   47.267781]  ? do_huge_pmd_anonymous_page+0xab4/0x1b00
[   47.273136]  ? lock_downgrade+0x990/0x990
[   47.277251]  ? pudp_huge_clear_flush+0x1f0/0x1f0
[   47.281972]  ? do_raw_spin_trylock+0x190/0x190
[   47.286519]  ? trace_event_raw_event_sched_switch+0x8a0/0x8a0
[   47.292375]  ? _cond_resched+0x14/0x30
[   47.296229]  ? _raw_spin_unlock+0x22/0x30
[   47.300347]  ? do_huge_pmd_anonymous_page+0xb21/0x1b00
[   47.305591]  ? __thp_get_unmapped_area+0x130/0x130
[   47.310487]  ? debug_check_no_locks_freed+0x3c0/0x3c0
[   47.315642]  ? is_bpf_text_address+0xa4/0x120
[   47.320102]  ? kernel_text_address+0x102/0x140
[   47.324656]  ? __kernel_text_address+0xd/0x40
[   47.329124]  ? unwind_get_return_address+0x61/0xa0
[   47.334026]  ? __save_stack_trace+0x7e/0xd0
[   47.338318]  ? depot_save_stack+0x12c/0x490
[   47.342608]  ? save_stack+0xa3/0xd0
[   47.346199]  ? save_stack+0x43/0xd0
[   47.349789]  ? kasan_kmalloc+0xad/0xe0
[   47.353639]  ? kasan_slab_alloc+0x12/0x20
[   47.357750]  ? kmem_cache_alloc+0x12e/0x760
[   47.362038]  ? selinux_file_alloc_security+0xae/0x190
[   47.367196]  ? security_file_alloc+0x6d/0xa0
[   47.371571]  ? get_empty_filp+0x189/0x4f0
[   47.375685]  ? alloc_file+0x26/0x390
[   47.379363]  ? sock_alloc_file+0x1fd/0x550
[   47.383559]  ? sock_map_fd+0x34/0x70
[   47.387238]  ? SyS_socket+0x125/0x200
[   47.391004]  ? entry_SYSCALL_64_fastpath+0x1f/0xbe
[   47.395895]  ? kasan_slab_alloc+0x12/0x20
[   47.400014]  ? kmem_cache_alloc+0x12e/0x760
[   47.404387]  ? get_empty_filp+0xfb/0x4f0
[   47.408412]  ? alloc_file+0x26/0x390
[   47.412090]  ? sock_alloc_file+0x1fd/0x550
[   47.416292]  ? find_held_lock+0x35/0x1d0
[   47.420319]  ? check_noncircular+0x20/0x20
[   47.424526]  ? __handle_mm_fault+0x587/0x39c0
[   47.428988]  ? check_noncircular+0x20/0x20
[   47.433187]  ? __pmd_alloc+0x4e0/0x4e0
[   47.437043]  ? __lockdep_init_map+0xe4/0x650
[   47.441420]  ? find_held_lock+0x35/0x1d0
[   47.445451]  ? handle_mm_fault+0x248/0x8d0
[   47.449653]  ? find_held_lock+0x35/0x1d0
[   47.453683]  ? __do_page_fault+0x64c/0xd60
[   47.457881]  ? lock_downgrade+0x990/0x990
[   47.461998]  ? handle_mm_fault+0x410/0x8d0
[   47.466199]  ? down_read_trylock+0xdb/0x170
[   47.471375]  ? __do_page_fault+0x31e/0xd60
[   47.475577]  ? __handle_mm_fault+0x39c0/0x39c0
[   47.480122]  ? vmacache_find+0x5f/0x280
[   47.484265]  ? vmacache_update+0xfe/0x130
[   47.488380]  ? __fget_light+0x297/0x380
[   47.492322]  ? sock_has_perm+0x29c/0x400
[   47.496349]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   47.501688]  sock_common_getsockopt+0x95/0xd0
[   47.506160]  ? sock_common_getsockopt+0x95/0xd0
[   47.510805]  SyS_getsockopt+0x178/0x340
[   47.514758]  ? SyS_setsockopt+0x360/0x360
[   47.518879]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   47.523697]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   47.528681]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   47.533411]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   47.538131] RIP: 0033:0x43fca9
[   47.541287] RSP: 002b:00007ffe686be5b8 EFLAGS: 00000203 ORIG_RAX: 0000000000000037
[   47.548961] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fca9
[   47.556195] RDX: 000000000000000b RSI: 0000000000000084 RDI: 0000000000000003
[   47.563430] RBP: 0000000000000082 R08: 0000000020290000 R09: 0000000000000000
[   47.570665] R10: 000000002099aff5 R11: 0000000000000203 R12: 0000000000401610
[   47.577900] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000
[   47.585145] Code: 48 0f 44 da e8 e0 d7 c3 ff 48 8b 85 28 ff ff ff 4d 89 f1 4c 89 e9 4c 89 e2 48 89 de 48 c7 c7 c0 a1 11 85 49 89 c0 e8 33 e3 ad ff <0f> 0b 48 c7 c0 80 9f 11 85 eb 96 48 c7 c0 c0 9f 11 85 eb 8d 48 
[   47.604217] RIP: __check_object_size+0x3a2/0x4f0 RSP: ffff8801d1eaf0f0
[   47.610995] ---[ end trace 683d54df1b2403bc ]---
[   47.615755] Kernel panic - not syncing: Fatal exception
[   47.621468] Dumping ftrace buffer:
[   47.624977]    (ftrace buffer empty)
[   47.628670] Kernel Offset: disabled
[   47.632272] Rebooting in 86400 seconds..