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-kasan-gce-386-0,10.128.0.38' (ECDSA) to the list of known hosts. 2017/12/07 12:03:21 parsed 1 programs 2017/12/07 12:03:21 executed programs: 0 syzkaller login: [ 34.064730] kasan: CONFIG_KASAN_INLINE enabled [ 34.069401] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.076983] general protection fault: 0000 [#1] SMP KASAN [ 34.082513] Dumping ftrace buffer: [ 34.086032] (ftrace buffer empty) [ 34.089714] Modules linked in: [ 34.092886] CPU: 1 PID: 3093 Comm: syz-executor0 Not tainted 4.15.0-rc2+ #121 [ 34.100130] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.109475] RIP: 0010:page_mapping+0xa4/0x530 [ 34.113944] RSP: 0018:ffff8801cc897180 EFLAGS: 00010202 [ 34.119281] RAX: 0000000000000004 RBX: 1ffff10039912e31 RCX: ffffffff8195002d [ 34.126528] RDX: 0000000000000000 RSI: 1ffff10039912ecf RDI: 0000000000000000 [ 34.133778] RBP: ffff8801cc8972d0 R08: ffffed0039976ce4 R09: ffff8801ccbb6700 [ 34.141028] R10: ffff8801cc4ce898 R11: ffffed0039976ce3 R12: 0000000000000000 [ 34.148269] R13: ffff8801cc8972a8 R14: dffffc0000000000 R15: 0000000000000020 [ 34.155519] FS: 0000000000000000(0000) GS:ffff8801db500000(0063) knlGS:0000000009e4c900 [ 34.163727] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.169587] CR2: 0000000008066b30 CR3: 00000001cc7c5000 CR4: 00000000001406e0 [ 34.176846] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.184094] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.191341] Call Trace: [ 34.193920] ? kstrndup+0xd0/0xd0 [ 34.197353] ? lock_downgrade+0x980/0x980 [ 34.201572] ? trace_hardirqs_off+0xd/0x10 [ 34.205791] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 34.210880] set_page_dirty+0xb9/0x5d0 [ 34.214748] ? __writepage+0xc0/0xc0 [ 34.218439] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 34.223442] ? trace_hardirqs_on+0xd/0x10 [ 34.227576] ? __rds_conn_create+0x37f/0x17e0 [ 34.232053] ? rds_conn_message_info_send+0x30/0x30 [ 34.237053] rds_atomic_free_op+0xc2/0x330 [ 34.241271] ? rds_rdma_free_op+0x500/0x500 [ 34.245575] ? refcount_sub_and_test+0x115/0x1b0 [ 34.250312] ? refcount_inc+0x50/0x50 [ 34.254094] rds_message_put+0x53c/0x6b0 [ 34.258132] ? kfree+0x1e7/0x250 [ 34.261476] ? rds_message_add_rdma_dest_extension+0x170/0x170 [ 34.267434] ? rds_cmsg_rdma_map+0xb0/0xb0 [ 34.271651] ? trace_hardirqs_on+0xd/0x10 [ 34.275786] ? _raw_spin_unlock_bh+0x30/0x40 [ 34.280178] ? __release_sock+0x360/0x360 [ 34.284295] ? lock_sock_nested+0x91/0x110 [ 34.288507] ? rds_conn_create_outgoing+0x3f/0x50 [ 34.293328] rds_sendmsg+0x14ee/0x1f90 [ 34.297196] ? rds_send_drop_to+0x19d0/0x19d0 [ 34.301673] ? lock_release+0xda0/0xda0 [ 34.305629] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 34.311495] ? sock_has_perm+0x29c/0x400 [ 34.315539] ? __check_object_size+0x25d/0x4f0 [ 34.320099] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 34.325447] ? __might_sleep+0x95/0x190 [ 34.329403] ? kasan_check_write+0x14/0x20 [ 34.333617] ? _copy_from_user+0x99/0x110 [ 34.337742] ? selinux_socket_sendmsg+0x36/0x40 [ 34.342387] ? security_socket_sendmsg+0x89/0xb0 [ 34.347120] ? rds_send_drop_to+0x19d0/0x19d0 [ 34.351596] sock_sendmsg+0xca/0x110 [ 34.355292] ___sys_sendmsg+0x75b/0x8a0 [ 34.359243] ? copy_msghdr_from_user+0x590/0x590 [ 34.363973] ? _raw_spin_unlock+0x22/0x30 [ 34.368095] ? check_noncircular+0x20/0x20 [ 34.372303] ? __pmd_alloc+0x4e0/0x4e0 [ 34.376161] ? find_held_lock+0x39/0x1d0 [ 34.380196] ? __fget_light+0x29d/0x390 [ 34.384144] ? fget_raw+0x20/0x20 [ 34.387577] ? find_held_lock+0x39/0x1d0 [ 34.391639] ? __fdget+0x18/0x20 [ 34.394991] __sys_sendmsg+0xe5/0x210 [ 34.398776] ? __sys_sendmsg+0xe5/0x210 [ 34.402738] ? SyS_shutdown+0x290/0x290 [ 34.406692] ? handle_mm_fault+0x410/0x8d0 [ 34.410911] ? __do_page_fault+0x32d/0xc90 [ 34.415128] ? compat_SyS_futex+0x288/0x380 [ 34.419440] compat_SyS_sendmsg+0x2a/0x40 [ 34.423573] ? compat_SyS_getsockopt+0x420/0x420 [ 34.428308] do_fast_syscall_32+0x3ee/0xf9d [ 34.432609] ? do_int80_syscall_32+0x9d0/0x9d0 [ 34.437164] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.441894] ? lockdep_sys_exit+0x47/0xf0 [ 34.446014] ? syscall_return_slowpath+0x2ad/0x550 [ 34.450921] ? sysret32_from_system_call+0x5/0x3b [ 34.455739] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.460564] entry_SYSENTER_compat+0x51/0x60 [ 34.464945] RIP: 0023:0xf7f74c79 [ 34.468276] RSP: 002b:00000000ff9924fc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 [ 34.476054] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000020743fe4 [ 34.483293] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 34.490533] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.497776] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.505023] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.512271] Code: f2 f2 f2 c7 40 14 00 f2 f2 f2 c7 40 18 f2 f2 f2 f2 c7 40 1c 00 f2 f2 f2 c7 40 20 f3 f3 f3 f3 e8 e3 37 db ff 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 41 04 00 00 4d 8d b5 00 ff ff ff 48 ba 00 [ 34.531381] RIP: page_mapping+0xa4/0x530 RSP: ffff8801cc897180 [ 34.537415] ---[ end trace 91aa8e3764ba6a46 ]--- [ 34.542331] Kernel panic - not syncing: Fatal exception [ 34.547698] Dumping ftrace buffer: [ 34.551209] (ftrace buffer empty) [ 34.554894] Kernel Offset: disabled [ 34.558498] Rebooting in 86400 seconds..