[info] Using makefile-style concurrent boot in runlevel 2. [ 24.544267] audit: type=1800 audit(1539635670.037:21): pid=5420 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] 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 syzkaller login: [ 30.859032] sshd (5558) used greatest stack depth: 15440 bytes left Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts. executing program [ 37.613244] ================================================================== [ 37.620692] BUG: KASAN: slab-out-of-bounds in fscache_alloc_cookie+0x745/0x800 [ 37.628042] Read of size 4 at addr ffff8801d7b014d4 by task syz-executor283/5575 [ 37.635553] [ 37.637165] CPU: 0 PID: 5575 Comm: syz-executor283 Not tainted 4.19.0-rc7-next-20181015+ #94 [ 37.645720] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.655068] Call Trace: [ 37.657644] dump_stack+0x244/0x39d [ 37.661291] ? dump_stack_print_info.cold.1+0x20/0x20 [ 37.666467] ? printk+0xa7/0xcf [ 37.669735] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 37.674480] print_address_description.cold.7+0x9/0x1ff [ 37.679826] kasan_report.cold.8+0x242/0x309 [ 37.684227] ? fscache_alloc_cookie+0x745/0x800 [ 37.688884] __asan_report_load4_noabort+0x14/0x20 [ 37.693796] fscache_alloc_cookie+0x745/0x800 [ 37.698280] ? fscache_cookie_init_once+0x80/0x80 [ 37.703110] ? rpcauth_get_gssinfo+0xe0/0xe0 [ 37.707504] ? __kmalloc_track_caller+0x157/0x760 [ 37.712331] ? kstrdup+0x39/0x70 [ 37.715681] ? nfs_alloc_client+0x328/0x770 [ 37.719987] ? nfs_get_client+0x8e8/0x14c0 [ 37.724227] ? nfs_init_server+0x357/0xff0 [ 37.728449] ? nfs_create_server+0x86/0x5f0 [ 37.732755] ? nfs_fs_mount+0x185f/0x2f36 [ 37.736887] ? legacy_get_tree+0x131/0x460 [ 37.741103] ? vfs_get_tree+0x1cb/0x5c0 [ 37.745060] ? do_mount+0x70c/0x1d90 [ 37.748754] ? ksys_mount+0x12d/0x140 [ 37.752535] ? __x64_sys_mount+0xbe/0x150 [ 37.756668] ? do_syscall_64+0x1b9/0x820 [ 37.760714] __fscache_acquire_cookie+0x230/0xb60 [ 37.765548] ? fscache_cookie_put+0x880/0x880 [ 37.770035] ? check_preemption_disabled+0x48/0x280 [ 37.775042] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 37.780562] ? rcu_pm_notify+0xc0/0xc0 [ 37.784440] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.789966] nfs_fscache_get_client_cookie+0x463/0x600 [ 37.795237] ? nfs_readpage_from_fscache_complete+0x200/0x200 [ 37.801222] nfs_alloc_client+0x4de/0x770 [ 37.805365] ? register_nfs_version+0x280/0x280 [ 37.810019] ? do_raw_spin_trylock+0x270/0x270 [ 37.814595] nfs_get_client+0x8e8/0x14c0 [ 37.818652] ? save_stack+0x43/0xd0 [ 37.822265] ? nfs_try_mount+0x180/0xa80 [ 37.826317] ? do_syscall_64+0x1b9/0x820 [ 37.830367] ? nfs_put_client+0xc20/0xc20 [ 37.834556] ? nfs_alloc_server+0x4fa/0x630 [ 37.838874] ? depot_save_stack+0x292/0x470 [ 37.843181] ? nfs_wait_client_init_complete+0x210/0x210 [ 37.848629] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 37.853805] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 37.859330] nfs_init_server+0x357/0xff0 [ 37.863376] ? nfs_clone_server+0x920/0x920 [ 37.867683] ? nfs_alloc_fattr+0x3e/0x70 [ 37.871733] ? kasan_check_write+0x14/0x20 [ 37.875953] ? nfs_fattr_init+0x9d/0x170 [ 37.880000] nfs_create_server+0x86/0x5f0 [ 37.884133] ? find_held_lock+0x36/0x1c0 [ 37.888179] nfs_try_mount+0x180/0xa80 [ 37.892063] ? lock_downgrade+0x900/0x900 [ 37.896197] ? nfs_request_mount.constprop.18+0x920/0x920 [ 37.901747] ? kasan_check_read+0x11/0x20 [ 37.905883] ? do_raw_spin_unlock+0xa7/0x330 [ 37.910277] ? do_raw_spin_trylock+0x270/0x270 [ 37.914865] ? rcu_read_lock_sched_held+0x14f/0x180 [ 37.919869] ? __kmalloc_track_caller+0x5eb/0x760 [ 37.924703] ? _raw_spin_unlock+0x2c/0x50 [ 37.928874] ? find_nfs_version+0x138/0x190 [ 37.933219] nfs_fs_mount+0x185f/0x2f36 [ 37.937195] ? rcu_pm_notify+0xc0/0xc0 [ 37.941081] ? nfs_show_options+0x250/0x250 [ 37.945394] ? nfs_clone_super+0x420/0x420 [ 37.949611] ? nfs_parse_mount_options+0x2660/0x2660 [ 37.954703] ? __kmalloc_track_caller+0x5eb/0x760 [ 37.959583] ? nfs_show_options+0x250/0x250 [ 37.963904] legacy_get_tree+0x131/0x460 [ 37.967962] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.973485] vfs_get_tree+0x1cb/0x5c0 [ 37.977280] ? legacy_fs_context_dup+0x1d0/0x1d0 [ 37.982036] do_mount+0x70c/0x1d90 [ 37.985566] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 37.991098] ? copy_mount_string+0x40/0x40 [ 37.995322] ? copy_mount_options+0x5f/0x430 [ 37.999718] ? kmem_cache_alloc_trace+0x353/0x750 [ 38.004559] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.010083] ? _copy_from_user+0xdf/0x150 [ 38.014310] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.019832] ? copy_mount_options+0x315/0x430 [ 38.024316] ksys_mount+0x12d/0x140 [ 38.027932] __x64_sys_mount+0xbe/0x150 [ 38.031894] do_syscall_64+0x1b9/0x820 [ 38.035784] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 38.041139] ? syscall_return_slowpath+0x5e0/0x5e0 [ 38.046061] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.050892] ? trace_hardirqs_on_caller+0x310/0x310 [ 38.055909] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 38.060915] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.066441] ? prepare_exit_to_usermode+0x291/0x3b0 [ 38.071451] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.076292] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.081467] RIP: 0033:0x440129 [ 38.084646] 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 [ 38.103654] RSP: 002b:00007ffdfc34d0c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 38.111360] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440129 [ 38.118623] RDX: 000000002015bffc RSI: 0000000020343ff8 RDI: 00000000208deff8 [ 38.125883] RBP: 00000000006ca018 R08: 000000002000a000 R09: 0000000000000000 [ 38.133143] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000004019b0 [ 38.140402] R13: 0000000000401a40 R14: 0000000000000000 R15: 0000000000000000 [ 38.147684] [ 38.149299] Allocated by task 5575: [ 38.152915] save_stack+0x43/0xd0 [ 38.156369] kasan_kmalloc+0xc7/0xe0 [ 38.160070] __kmalloc+0x15b/0x760 [ 38.163605] fscache_alloc_cookie+0x68f/0x800 [ 38.168097] __fscache_acquire_cookie+0x230/0xb60 [ 38.172927] nfs_fscache_get_client_cookie+0x463/0x600 [ 38.178190] nfs_alloc_client+0x4de/0x770 [ 38.182334] nfs_get_client+0x8e8/0x14c0 [ 38.186381] nfs_init_server+0x357/0xff0 [ 38.190426] nfs_create_server+0x86/0x5f0 [ 38.194560] nfs_try_mount+0x180/0xa80 [ 38.198431] nfs_fs_mount+0x185f/0x2f36 [ 38.202389] legacy_get_tree+0x131/0x460 [ 38.206437] vfs_get_tree+0x1cb/0x5c0 [ 38.210225] do_mount+0x70c/0x1d90 [ 38.213752] ksys_mount+0x12d/0x140 [ 38.217371] __x64_sys_mount+0xbe/0x150 [ 38.221332] do_syscall_64+0x1b9/0x820 [ 38.225219] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.230388] [ 38.231998] Freed by task 1: [ 38.235003] save_stack+0x43/0xd0 [ 38.238437] __kasan_slab_free+0x102/0x150 [ 38.242654] kasan_slab_free+0xe/0x10 [ 38.246457] kfree+0xcf/0x230 [ 38.249549] acpi_ns_get_node_unlocked+0x2b9/0x309 [ 38.254467] acpi_ns_get_node+0x4d/0x6b [ 38.258425] acpi_ns_evaluate+0xf3/0x9bc [ 38.262470] acpi_ut_evaluate_object+0x12b/0x425 [ 38.267221] acpi_ut_execute_power_methods+0xf1/0x22a [ 38.272402] acpi_get_object_info+0x6da/0xd51 [ 38.276887] acpi_init_device_object+0x12a0/0x1e20 [ 38.281803] acpi_add_single_object+0x1d2/0x1ee0 [ 38.286551] acpi_bus_check_add+0x5e0/0xb10 [ 38.290860] acpi_ns_walk_namespace+0x224/0x400 [ 38.295515] acpi_walk_namespace+0xf2/0x12c [ 38.299824] acpi_bus_scan+0x146/0x170 [ 38.303697] acpi_scan_init+0x403/0x8fe [ 38.307658] acpi_init+0x941/0xa19 [ 38.311181] do_one_initcall+0x140/0x956 [ 38.315240] kernel_init_freeable+0x5c6/0x6b9 [ 38.319742] kernel_init+0x11/0x1ae [ 38.323357] ret_from_fork+0x3a/0x50 [ 38.327047] [ 38.328660] The buggy address belongs to the object at ffff8801d7b014c0 [ 38.328660] which belongs to the cache kmalloc-32 of size 32 [ 38.341166] The buggy address is located 20 bytes inside of [ 38.341166] 32-byte region [ffff8801d7b014c0, ffff8801d7b014e0) [ 38.352856] The buggy address belongs to the page: [ 38.357781] page:ffffea00075ec040 count:1 mapcount:0 mapping:ffff8801da8001c0 index:0xffff8801d7b01fc1 [ 38.367243] flags: 0x2fffc0000000200(slab) [ 38.371486] raw: 02fffc0000000200 ffffea00075ec8c8 ffffea00075eb8c8 ffff8801da8001c0 [ 38.379362] raw: ffff8801d7b01fc1 ffff8801d7b01000 000000010000003f 0000000000000000 [ 38.387231] page dumped because: kasan: bad access detected [ 38.393040] [ 38.394655] Memory state around the buggy address: [ 38.399570] ffff8801d7b01380: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 38.406916] ffff8801d7b01400: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 38.414266] >ffff8801d7b01480: fb fb fb fb fc fc fc fc 00 00 06 fc fc fc fc fc [ 38.421609] ^ [ 38.427567] ffff8801d7b01500: 01 fc fc fc fc fc fc fc 01 fc fc fc fc fc fc fc [ 38.434915] ffff8801d7b01580: 00 fc fc fc fc fc fc fc 00 00 00 00 fc fc fc fc [ 38.442275] ================================================================== [ 38.449620] Disabling lock debugging due to kernel taint [ 38.455891] Kernel panic - not syncing: panic_on_warn set ... [ 38.461807] CPU: 0 PID: 5575 Comm: syz-executor283 Tainted: G B 4.19.0-rc7-next-20181015+ #94 [ 38.471771] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.481127] Call Trace: [ 38.483719] dump_stack+0x244/0x39d [ 38.487343] ? dump_stack_print_info.cold.1+0x20/0x20 [ 38.492529] panic+0x2ad/0x55c [ 38.495722] ? add_taint.cold.5+0x16/0x16 [ 38.499858] ? preempt_schedule+0x4d/0x60 [ 38.503993] ? ___preempt_schedule+0x16/0x18 [ 38.508387] ? trace_hardirqs_on+0xb4/0x310 [ 38.512695] kasan_end_report+0x47/0x4f [ 38.516668] kasan_report.cold.8+0x76/0x309 [ 38.520988] ? fscache_alloc_cookie+0x745/0x800 [ 38.525641] __asan_report_load4_noabort+0x14/0x20 [ 38.530554] fscache_alloc_cookie+0x745/0x800 [ 38.535040] ? fscache_cookie_init_once+0x80/0x80 [ 38.539864] ? rpcauth_get_gssinfo+0xe0/0xe0 [ 38.544256] ? __kmalloc_track_caller+0x157/0x760 [ 38.549079] ? kstrdup+0x39/0x70 [ 38.552430] ? nfs_alloc_client+0x328/0x770 [ 38.556743] ? nfs_get_client+0x8e8/0x14c0 [ 38.560958] ? nfs_init_server+0x357/0xff0 [ 38.565174] ? nfs_create_server+0x86/0x5f0 [ 38.569478] ? nfs_fs_mount+0x185f/0x2f36 [ 38.573606] ? legacy_get_tree+0x131/0x460 [ 38.577819] ? vfs_get_tree+0x1cb/0x5c0 [ 38.581774] ? do_mount+0x70c/0x1d90 [ 38.585467] ? ksys_mount+0x12d/0x140 [ 38.589245] ? __x64_sys_mount+0xbe/0x150 [ 38.593375] ? do_syscall_64+0x1b9/0x820 [ 38.597419] __fscache_acquire_cookie+0x230/0xb60 [ 38.602244] ? fscache_cookie_put+0x880/0x880 [ 38.606726] ? check_preemption_disabled+0x48/0x280 [ 38.611729] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 38.617249] ? rcu_pm_notify+0xc0/0xc0 [ 38.621120] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.626642] nfs_fscache_get_client_cookie+0x463/0x600 [ 38.631906] ? nfs_readpage_from_fscache_complete+0x200/0x200 [ 38.637793] nfs_alloc_client+0x4de/0x770 [ 38.641924] ? register_nfs_version+0x280/0x280 [ 38.646578] ? do_raw_spin_trylock+0x270/0x270 [ 38.651162] nfs_get_client+0x8e8/0x14c0 [ 38.655221] ? save_stack+0x43/0xd0 [ 38.658850] ? nfs_try_mount+0x180/0xa80 [ 38.662899] ? do_syscall_64+0x1b9/0x820 [ 38.666947] ? nfs_put_client+0xc20/0xc20 [ 38.671079] ? nfs_alloc_server+0x4fa/0x630 [ 38.675386] ? depot_save_stack+0x292/0x470 [ 38.679692] ? nfs_wait_client_init_complete+0x210/0x210 [ 38.685132] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 38.690310] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.695838] nfs_init_server+0x357/0xff0 [ 38.699935] ? nfs_clone_server+0x920/0x920 [ 38.704243] ? nfs_alloc_fattr+0x3e/0x70 [ 38.708296] ? kasan_check_write+0x14/0x20 [ 38.712516] ? nfs_fattr_init+0x9d/0x170 [ 38.716564] nfs_create_server+0x86/0x5f0 [ 38.720729] ? find_held_lock+0x36/0x1c0 [ 38.724780] nfs_try_mount+0x180/0xa80 [ 38.728653] ? lock_downgrade+0x900/0x900 [ 38.733079] ? nfs_request_mount.constprop.18+0x920/0x920 [ 38.738602] ? kasan_check_read+0x11/0x20 [ 38.742734] ? do_raw_spin_unlock+0xa7/0x330 [ 38.747126] ? do_raw_spin_trylock+0x270/0x270 [ 38.751694] ? rcu_read_lock_sched_held+0x14f/0x180 [ 38.756699] ? __kmalloc_track_caller+0x5eb/0x760 [ 38.761532] ? _raw_spin_unlock+0x2c/0x50 [ 38.765667] ? find_nfs_version+0x138/0x190 [ 38.769976] nfs_fs_mount+0x185f/0x2f36 [ 38.773944] ? rcu_pm_notify+0xc0/0xc0 [ 38.777816] ? nfs_show_options+0x250/0x250 [ 38.782125] ? nfs_clone_super+0x420/0x420 [ 38.786344] ? nfs_parse_mount_options+0x2660/0x2660 [ 38.791435] ? __kmalloc_track_caller+0x5eb/0x760 [ 38.796270] ? nfs_show_options+0x250/0x250 [ 38.800577] legacy_get_tree+0x131/0x460 [ 38.804643] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.810170] vfs_get_tree+0x1cb/0x5c0 [ 38.813966] ? legacy_fs_context_dup+0x1d0/0x1d0 [ 38.818720] do_mount+0x70c/0x1d90 [ 38.822254] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 38.827869] ? copy_mount_string+0x40/0x40 [ 38.832090] ? copy_mount_options+0x5f/0x430 [ 38.836484] ? kmem_cache_alloc_trace+0x353/0x750 [ 38.841315] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.846856] ? _copy_from_user+0xdf/0x150 [ 38.850993] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.856721] ? copy_mount_options+0x315/0x430 [ 38.861215] ksys_mount+0x12d/0x140 [ 38.864829] __x64_sys_mount+0xbe/0x150 [ 38.868788] do_syscall_64+0x1b9/0x820 [ 38.872662] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 38.878011] ? syscall_return_slowpath+0x5e0/0x5e0 [ 38.882926] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.887772] ? trace_hardirqs_on_caller+0x310/0x310 [ 38.892777] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 38.897785] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.903318] ? prepare_exit_to_usermode+0x291/0x3b0 [ 38.908325] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.913168] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.918343] RIP: 0033:0x440129 [ 38.921522] 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 [ 38.940427] RSP: 002b:00007ffdfc34d0c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 38.948126] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 0000000000440129 [ 38.955397] RDX: 000000002015bffc RSI: 0000000020343ff8 RDI: 00000000208deff8 [ 38.962672] RBP: 00000000006ca018 R08: 000000002000a000 R09: 0000000000000000 [ 38.969947] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000004019b0 [ 38.977215] R13: 0000000000401a40 R14: 0000000000000000 R15: 0000000000000000 [ 38.985369] Kernel Offset: disabled [ 38.988995] Rebooting in 86400 seconds..