Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 12.303247] sshd (3057) used greatest stack depth: 14504 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 13.003232] audit: type=1400 audit(1513525450.579:6): avc: denied { map } for pid=3131 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-1,10.128.15.211' (ECDSA) to the list of known hosts. net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz0.router_solicitations = 0 syzkaller login: [ 19.294427] audit: type=1400 audit(1513525456.870:7): avc: denied { map } for pid=3145 comm="syzkaller259864" path="/root/syzkaller259864511" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program [ 19.402248] FAULT_INJECTION: forcing a failure. [ 19.402248] name failslab, interval 1, probability 0, space 0, times 1 [ 19.413508] CPU: 1 PID: 3146 Comm: syzkaller259864 Not tainted 4.15.0-rc2-mm1+ #39 [ 19.421189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.430525] Call Trace: [ 19.433087] dump_stack+0x194/0x257 [ 19.436694] ? arch_local_irq_restore+0x53/0x53 [ 19.441350] should_fail+0x8c0/0xa40 [ 19.445041] ? mount_nodev+0x37/0x100 [ 19.448819] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 19.453897] ? perf_trace_lock+0x900/0x900 [ 19.458107] ? find_next_zero_bit+0xe3/0x110 [ 19.462495] ? find_held_lock+0x39/0x1d0 [ 19.466542] ? __lock_is_held+0xbc/0x140 [ 19.470591] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 19.476446] ? find_held_lock+0x39/0x1d0 [ 19.480483] ? rcu_note_context_switch+0x710/0x710 [ 19.485394] should_failslab+0xec/0x120 [ 19.489343] __kmalloc+0x63/0x760 [ 19.492771] ? __radix_tree_preload+0x133/0x1c0 [ 19.497418] ? register_shrinker+0x10e/0x2d0 [ 19.501800] ? trace_event_raw_event_module_request+0x320/0x320 [ 19.507834] register_shrinker+0x10e/0x2d0 [ 19.512054] ? prepare_kswapd_sleep+0x1f0/0x1f0 [ 19.516823] ? memcpy+0x45/0x50 [ 19.520103] sget_userns+0xbc3/0xe20 [ 19.523804] ? get_anon_bdev+0x2a0/0x2a0 [ 19.527877] ? destroy_unused_super.part.7+0xd0/0xd0 [ 19.532968] ? cred_has_capability+0x1a0/0x3d0 [ 19.537530] ? selinux_ipv4_output+0x40/0x40 [ 19.543480] ? free_pages+0x51/0x90 [ 19.547087] ? selinux_sb_copy_data+0x403/0x610 [ 19.551745] ? selinux_capable+0x36/0x40 [ 19.555804] ? security_capable+0x8e/0xc0 [ 19.559949] ? get_anon_bdev+0x2a0/0x2a0 [ 19.564006] ? ns_capable_common+0xcf/0x160 [ 19.568316] ? get_anon_bdev+0x2a0/0x2a0 [ 19.572351] sget+0xd2/0x120 [ 19.575343] ? __get_fs_type+0x22/0xc0 [ 19.579205] ? shmem_remount_fs+0x6c0/0x6c0 [ 19.583501] mount_nodev+0x37/0x100 [ 19.587103] shmem_mount+0x2c/0x40 [ 19.590617] mount_fs+0x66/0x2d0 [ 19.593960] vfs_kern_mount.part.26+0xc6/0x4a0 [ 19.598518] ? may_umount+0xa0/0xa0 [ 19.602122] ? _raw_read_unlock+0x22/0x30 [ 19.606244] ? __get_fs_type+0x8a/0xc0 [ 19.610112] do_mount+0xea4/0x2bb0 [ 19.613633] ? copy_mount_string+0x40/0x40 [ 19.617848] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 19.623022] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 19.627763] ? retint_kernel+0x10/0x10 [ 19.631631] ? copy_mount_options+0x18b/0x2e0 [ 19.636622] ? copy_mount_options+0x190/0x2e0 [ 19.641093] ? copy_mount_options+0x1f4/0x2e0 [ 19.645566] SyS_mount+0xab/0x120 [ 19.648996] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 19.653727] RIP: 0033:0x446679 [ 19.656888] RSP: 002b:00007ffccb258058 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 19.664570] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000446679 [ 19.671811] RDX: 0000000020f9effa RSI: 00000000202b9000 RDI: 0000000020b85ff8 [ 19.679056] RBP: 0000000000000006 R08: 00000000207caf71 R09: 0000000000003531 [ 19.686299] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004038b0 [ 19.693544] R13: 0000000000403940 R14: 0000000000000000 R15: 0000000000000000 [ 19.702834] kasan: CONFIG_KASAN_INLINE enabled [ 19.707480] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 19.715123] general protection fault: 0000 [#1] SMP KASAN [ 19.720637] Dumping ftrace buffer: [ 19.724143] (ftrace buffer empty) [ 19.727820] Modules linked in: [ 19.730980] CPU: 1 PID: 3146 Comm: syzkaller259864 Not tainted 4.15.0-rc2-mm1+ #39 [ 19.738651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.747989] RIP: 0010:__list_del_entry_valid+0x7e/0x150 [ 19.753498] RSP: 0018:ffff8801c4d97b48 EFLAGS: 00010246 [ 19.760658] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 19.770498] RDX: 0000000000000000 RSI: ffff8801c4ac75d8 RDI: ffff8801c4ac75e0 [ 19.780254] RBP: ffff8801c4d97b60 R08: ffff8801c4d975c0 R09: ffff8801c5bd2180 [ 19.790268] R10: 000000000000000b R11: ffffed00389b2eba R12: 0000000000000000 [ 19.800282] R13: dffffc0000000000 R14: 1ffff100389b2f8d R15: ffff8801c4ac75d8 [ 19.810128] FS: 0000000001689940(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 19.820353] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.826200] CR2: 00000000207caf71 CR3: 00000001c5f99002 CR4: 00000000001606e0 [ 19.833439] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.840677] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.847912] Call Trace: [ 19.850471] unregister_shrinker+0x79/0x300 [ 19.854761] ? perf_trace_mm_vmscan_writepage+0x790/0x790 [ 19.860265] ? down_write+0x87/0x120 [ 19.863945] ? deactivate_super+0x139/0x1b0 [ 19.868234] ? down_read+0x150/0x150 [ 19.871928] deactivate_locked_super+0x64/0xd0 [ 19.876477] deactivate_super+0x141/0x1b0 [ 19.880591] ? __sb_start_write+0x290/0x290 [ 19.884884] cleanup_mnt+0xb2/0x150 [ 19.888476] __cleanup_mnt+0x16/0x20 [ 19.892161] task_work_run+0x199/0x270 [ 19.896024] ? task_work_cancel+0x210/0x210 [ 19.900313] ? exit_to_usermode_loop+0x8c/0x2f0 [ 19.904952] exit_to_usermode_loop+0x275/0x2f0 [ 19.909502] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 19.915009] ? retint_kernel+0x10/0x10 [ 19.918871] syscall_return_slowpath+0x490/0x550 [ 19.923592] ? prepare_exit_to_usermode+0x340/0x340 [ 19.928575] ? entry_SYSCALL_64_fastpath+0x69/0x96 [ 19.933481] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 19.938464] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 19.943192] entry_SYSCALL_64_fastpath+0x94/0x96 [ 19.947912] RIP: 0033:0x446679 [ 19.951070] RSP: 002b:00007ffccb258058 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 19.958756] RAX: ffffffffffffffec RBX: 00007ffccb258000 RCX: 0000000000446679 [ 19.965996] RDX: 0000000020f9effa RSI: 00000000202b9000 RDI: 0000000020b85ff8 [ 19.973237] RBP: 0000000000000003 R08: 00000000207caf71 R09: 0000000000003531 [ 19.980484] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 19.987719] R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 [ 19.994965] Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 [ 20.014066] RIP: __list_del_entry_valid+0x7e/0x150 RSP: ffff8801c4d97b48 [ 20.020964] ---[ end trace 422dd7d3477fece7 ]--- [ 20.026082] Kernel panic - not syncing: Fatal exception [ 20.032253] Dumping ftrace buffer: [ 20.035761] (ftrace buffer empty) [ 20.039440] Kernel Offset: disabled [ 20.043040] Rebooting in 86400 seconds..