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-386-4,10.128.0.47' (ECDSA) to the list of known hosts. 2017/12/07 08:14:52 parsed 1 programs 2017/12/07 08:14:52 executed programs: 0 syzkaller login: [ 18.851367] kasan: CONFIG_KASAN_INLINE enabled [ 18.852119] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.853230] general protection fault: 0000 [#1] SMP KASAN [ 18.854013] Dumping ftrace buffer: [ 18.854499] (ftrace buffer empty) [ 18.855019] Modules linked in: [ 18.855459] CPU: 1 PID: 3092 Comm: syz-executor0 Not tainted 4.15.0-rc2+ #120 [ 18.856425] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.857649] RIP: 0010:page_mapping+0xa4/0x530 [ 18.858243] RSP: 0018:ffff8801cbe07180 EFLAGS: 00010202 [ 18.858953] RAX: 0000000000000004 RBX: 1ffff100397c0e31 RCX: ffffffff8194bf1d [ 18.859904] RDX: 0000000000000000 RSI: 1ffff100397c0ecf RDI: 0000000000000000 [ 18.860871] RBP: ffff8801cbe072d0 R08: ffffed0039760574 R09: ffff8801cbb02b80 [ 18.861839] R10: ffff8801cbf193e8 R11: ffffed0039760573 R12: 0000000000000000 [ 18.862789] R13: ffff8801cbe072a8 R14: dffffc0000000000 R15: 0000000000000020 [ 18.863794] FS: 0000000000000000(0000) GS:ffff8801db500000(0063) knlGS:0000000009300900 [ 18.864878] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 18.865651] CR2: 0000000008066b30 CR3: 00000001d1a8f000 CR4: 00000000001406e0 [ 18.866605] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.867568] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.868517] Call Trace: [ 18.868872] ? kstrndup+0xd0/0xd0 [ 18.869359] ? lock_downgrade+0x980/0x980 [ 18.869920] ? trace_hardirqs_off+0xd/0x10 [ 18.870487] ? _raw_spin_unlock_irqrestore+0xa6/0xba [ 18.871189] set_page_dirty+0xb9/0x5d0 [ 18.873094] ? __writepage+0xc0/0xc0 [ 18.876776] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.881755] ? trace_hardirqs_on+0xd/0x10 [ 18.885868] ? __rds_conn_create+0x37f/0x17e0 [ 18.890335] ? rds_conn_message_info_send+0x30/0x30 [ 18.895320] rds_atomic_free_op+0xc2/0x330 [ 18.899520] ? rds_rdma_free_op+0x500/0x500 [ 18.903808] ? refcount_sub_and_test+0x115/0x1b0 [ 18.908531] ? refcount_inc+0x50/0x50 [ 18.912302] rds_message_put+0x53c/0x6b0 [ 18.916330] ? kfree+0x1e7/0x250 [ 18.919662] ? rds_message_add_rdma_dest_extension+0x170/0x170 [ 18.925599] ? rds_cmsg_rdma_map+0xb0/0xb0 [ 18.929799] ? trace_hardirqs_on+0xd/0x10 [ 18.933914] ? _raw_spin_unlock_bh+0x30/0x40 [ 18.938295] ? __release_sock+0x360/0x360 [ 18.942410] ? lock_sock_nested+0x91/0x110 [ 18.946610] ? rds_conn_create_outgoing+0x3f/0x50 [ 18.951421] rds_sendmsg+0x14ee/0x1f90 [ 18.955280] ? rds_send_drop_to+0x19d0/0x19d0 [ 18.959744] ? lock_release+0xda0/0xda0 [ 18.963683] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.969530] ? sock_has_perm+0x29c/0x400 [ 18.973557] ? __check_object_size+0x25d/0x4f0 [ 18.978108] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 18.983435] ? __might_sleep+0x95/0x190 [ 18.987376] ? kasan_check_write+0x14/0x20 [ 18.991578] ? _copy_from_user+0x99/0x110 [ 18.995691] ? selinux_socket_sendmsg+0x36/0x40 [ 19.000324] ? security_socket_sendmsg+0x89/0xb0 [ 19.005043] ? rds_send_drop_to+0x19d0/0x19d0 [ 19.009506] sock_sendmsg+0xca/0x110 [ 19.013187] ___sys_sendmsg+0x75b/0x8a0 [ 19.017127] ? copy_msghdr_from_user+0x590/0x590 [ 19.021847] ? _raw_spin_unlock+0x22/0x30 [ 19.025960] ? check_noncircular+0x20/0x20 [ 19.030168] ? __pmd_alloc+0x4e0/0x4e0 [ 19.034026] ? find_held_lock+0x39/0x1d0 [ 19.038053] ? __fget_light+0x29d/0x390 [ 19.041991] ? fget_raw+0x20/0x20 [ 19.045417] ? find_held_lock+0x39/0x1d0 [ 19.049451] ? __fdget+0x18/0x20 [ 19.052788] __sys_sendmsg+0xe5/0x210 [ 19.056553] ? __sys_sendmsg+0xe5/0x210 [ 19.060492] ? SyS_shutdown+0x290/0x290 [ 19.064431] ? handle_mm_fault+0x410/0x8d0 [ 19.068632] ? __do_page_fault+0x32d/0xc90 [ 19.072835] ? compat_SyS_futex+0x288/0x380 [ 19.077133] compat_SyS_sendmsg+0x2a/0x40 [ 19.081249] ? compat_SyS_getsockopt+0x420/0x420 [ 19.085972] do_fast_syscall_32+0x3ee/0xf9d [ 19.090264] ? do_int80_syscall_32+0x9d0/0x9d0 [ 19.094809] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 19.099530] ? lockdep_sys_exit+0x47/0xf0 [ 19.103642] ? syscall_return_slowpath+0x2ad/0x550 [ 19.108553] ? sysret32_from_system_call+0x5/0x3b [ 19.113370] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 19.118180] entry_SYSENTER_compat+0x51/0x60 [ 19.122557] RIP: 0023:0xf7f5bc79 [ 19.125885] RSP: 002b:00000000ffcb505c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 [ 19.133559] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000002048cfe4 [ 19.140791] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000000 [ 19.148025] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 19.155259] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 19.162495] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 19.169744] 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 c3 38 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 [ 19.188817] RIP: page_mapping+0xa4/0x530 RSP: ffff8801cbe07180 [ 19.194834] ---[ end trace 85d6257c8bf79b22 ]--- [ 19.199737] Kernel panic - not syncing: Fatal exception [ 19.205386] Dumping ftrace buffer: [ 19.208889] (ftrace buffer empty) [ 19.212567] Kernel Offset: disabled [ 19.216174] Rebooting in 86400 seconds..